JP4432094B1 - Panel lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively prevent rotation between a lock pin held on a door panel side and a locking part formed on the door panel side when maintaining a connected state of the door panel and the side panel. Like that.
A door panel P2 that holds a lock pin 1 that engages with an engaging portion 2 provided on a side panel P3 when moving forward and releases the engagement with the engaging portion 2 when moving backward is a gripping portion on the lock pin 1. 11 has a forward locking portion 6 that fits 11 in an upright state, and the forward locking portion 6 has a pair of sandwiching pieces 6a and 6b for allowing the gripping portion 11 to be present, and the pair of sandwiching pieces 6a, One of the clamping pieces 6a in 6b presses the gripping part 11 toward the other opposing clamping piece 6b, or prevents the gripping part 11 from coming off between the pair of clamping pieces 6a, 6b. It has a stopper portion 6c.
[Selection] Figure 1

Description

  The present invention relates to a panel lock device, and more particularly to an improvement in a panel lock device that enables selection of whether or not to connect a door panel and a side panel in a box pallet.

  There have been various proposals as a panel lock device that enables selection of whether or not the door panel and the side panel can be connected to each other in the box pallet. For example, in Patent Document 1, a panel lock device is a panel lock device. The proposal which has the rotation prevention mechanism which prevents the mischievous rotation in the lock pin which comprises an apparatus is disclosed.

  That is, in the panel lock device disclosed in Patent Document 1, the lock pin held on the door panel side of the box pallet and the lock pin provided on the side panel side of the box pallet are engaged when the lock pin is advanced. And an engaging portion for releasing the engagement with the lock pin when the lock pin is retracted.

  Therefore, in the panel lock device disclosed in Patent Document 1, by engaging the lock pin held on the door panel side with the engaging portion provided on the side panel side, It is possible to select whether the door panel and the side panel in the box pallet can be connected or not by releasing the engagement of the lock pin to be held with the engaging portion provided on the side panel side.

  On the other hand, in the above proposal, the lock pin has a grip portion for facilitating the advancement and retraction of the lock pin, but the grip portion is formed to have a square U-shaped front shape. In addition, both upper ends are connected to the lock pin so as to be suspended from the lock pin.

  At this time, the gripping part is also formed of steel like the lock pin so as to increase the weight. For example, when the box pallet is suspended upside down to release the contents, the lock pin freely rotates with its own weight. there's a possibility that.

  Then, if the lock pin moves backward due to the free rotation of the lock pin, there is a problem that the connection state between the door panel and the side panel is released, so the lock pin is rotated so as not to freely rotate. Has a blocking mechanism.

  In addition, in the above proposal, this rotation prevention mechanism can continuously continue the state in which the grip portion connected to the lock pin is suspended, and therefore, the lock pin rotates unnecessarily. Even if the lock pallet does not retract due to free rotation and the box pallet is suspended upside down to release the contents, the door panel and the side panel are connected. Can be maintained.

Japanese Patent Publication No. 2007-112453 (abstract, refer to paragraphs 0005 to 0007 and FIG. 1 to FIG. 9 in the specification)

  However, in the proposal disclosed in Patent Document 1 described above, the lock pin is not rotated unnecessarily, and therefore there is basically a problem in that the connection state between the door panel and the side panel can be maintained. However, it may be pointed out that there is a minor defect in the actual use.

  That is, the rotation prevention mechanism in the above-described panel lock device uses frictional resistance between the lock pin side and the door panel side that holds the lock pin movably.

  In other words, the lock pin has a frictional resistance part that interferes with the door panel side and maximizes the frictional resistance when rotating in the direction to suspend the gripping part. When the lock pin is advanced and retracted, it does not interfere with the door panel side, and therefore does not generate frictional resistance.

  For example, when the lock pin is in the forward movement state, the gripping part is rotated so as to be tilted from the horizontal, and therefore when the frictional resistance part interferes with the door panel side, the lock pin side and the door panel side In particular, when the gripping part is hung directly below, the frictional resistance is maximized and the free rotation of the lock pin is prevented.

  Therefore, in the proposal disclosed in Patent Document 1 described above, dimensional management on the lock pin side and the door panel side is important so that the frictional resistance between the lock pin side and the door panel side becomes an optimum value. Therefore, there is a problem that it is difficult to reduce the product cost of the box pallet due to the time and effort required to implement it.

  The present invention has been developed in view of the above-described circumstances, and the object of the present invention is to make a mischief in the lock pin held on the door panel side when the connection state between the door panel and the side panel is maintained. It is an object of the present invention to provide a panel lock device that can effectively prevent such rotation and is optimal for expecting improved versatility in a box pallet.

In order to achieve the above-described object, the configuration of the panel lock device according to the present invention basically includes a bottom panel, a pair of door panels and a pair of side panels rising from the four sides of the bottom panel, A frame made of reinforcing pipes provided around the door panel and the side panel, a plate attached to the front surface of the door panel, a guide member attached to the plate, and a horizontal holding by the guide member However, the lock pin that can be moved in the axial direction and rotated about the shaft core line is engaged with the tip of the lock pin when the lock pin is advanced, and the lock pin is retracted when the lock pin is retracted. in organic and panel locking device in box pallet comprising an engaging portion to release the engagement between the tip portion of the lock pin, frame engaging portion of said of said side panels And an engaging plate provided on, are formed on the engaging plate to become a vertically long hole to permit entry and exit of the distal end of the locking pin, said locking pin that rocking is integrally connected to the lock pin A holding part having an L-shape in front view that enables a moving operation and a horizontal movement, and the plate has an engaging part for fitting the holding part in an upright state, and the engaging part is and it has a pair of holding pieces that Soo clamping the grip portion of having a stopper portion composed of convex portions the pair of holding pieces are facing the inner, sandwiching the stopper portion of the other opposing the gripping portion Suppose that it presses toward a piece or prevents the gripping part from coming off from between the pair of sandwiching pieces.

Therefore, in the present invention, in the box pallet, when the gripping portion of the lock pin held by the door panel connected to the side panel is fitted to the locking portion provided on the door panel, this locking is performed. The pair has a pair of sandwiching pieces with the gripping portion in between, and the pair of sandwiching pieces has a stopper portion composed of convex portions facing each other on the inside, and the other sandwiching portion with which the stopper portion faces the gripping portion The gripping part is locked against the gripping part fitted to the locking part because the gripping part is prevented from coming off from between the pair of sandwiching pieces. As long as an external force smaller than the operating force when releasing the fitting to the portion is applied, the fitting of the gripping portion to the locking portion is not released, and therefore, mischievous rotation of the lock pin can be prevented. .

  Incidentally, the holding piece having the stopper portion described above is a holding force that is inferior to the operating force when the gripping portion that is present between the pair of holding pieces serving as the locking portions is separated from between the pair of holding pieces, or a pair of holding pieces. Since it has a deterring force that is inferior to the operating force when the gripping part that is present between the sandwiching pieces is extracted from between the pair of sandwiching pieces, when the operating force exceeds the clamping force or the deterring force, The fitting of the gripping portion to the locking portion can be released, and it is possible to prevent the gripping portion from being detached from the locking portion due to an external force action or its own weight caused by simple vibration or the like.

  As a result, even when the box pallet is turned upside down and the contents are dropped downward, the lock pin is not rotated, and the connection state between the door panel and the side panel by the lock pin is maintained.

It is a general | schematic whole perspective view which shows the box pallet by one Embodiment of this invention. It is a fragmentary perspective view which expands and shows the panel lock apparatus which connects the door panel and side panel in the box pallet of FIG. FIG. 3 is a partial cross-sectional view showing a state in which the door panel and the side panel are connected by a lock pin in the panel lock device of FIG. 2. It is a figure which shows the panel lock apparatus of the state which released | released the connection of a door panel and a side panel similarly to FIG.

  Hereinafter, the present invention will be described based on the illustrated embodiment. A panel lock device S according to the present invention exhibits a box pallet (not shown), that is, a rectangular planar shape as shown in FIG. It has a bottom panel P1, a pair of door panels P2, P2 standing up from the four sides of the bottom panel P1, and a pair of side panels P3, P3, and an upper end of the pair of door panels P2, P2. A rectangular pallet formed by the upper ends of the pair of side panels P3, P3 is embodied as a box-shaped pallet.

  At this time, in this box pallet, both the door panels P2 and P2 and the side panels P3 and P3 may be connected to the bottom panel P1 so as to be raised and lowered. Instead, only the door panels P2 and P2 are connected. Alternatively, only the side panels P3 and P3 may be connected to the bottom panel P1 so as to be raised and lowered.

  The panel lock device S allows the door panel P2 and the side panel P3 to be connected to each other in the box pallet, and also allows the connection to be released. , P2 and side panels P3, P3 can be tilted, and any of the door panels P2, P2 and side panels P3, P3 can be tilted.

  Since the box pallet basically does not limit the contents, the panels P1, P2, and P3 may be formed so as to have a predetermined mechanical strength, and can be loaded on the truck bed. It is possible to carry it, and it is possible to carry it, and it is formed so as to allow suspension such as using a crane, in particular, upside down so that the upper end opening is directed downward and the contents are dropped downward Preferably it is done.

  Based on the above, each panel P1, P2, P3 is not shown in detail, but is reinforced by appropriately connecting a stud to a frame formed by a square pipe made of steel, and is connected to a frame or a stud. When a box pallet is formed by arranging a wire mesh of an arbitrary structure, a predetermined accommodation space is formed inside.

  The names of the panels P1, P2, and P3 forming the box pallet are basically arbitrary. For example, instead of the pair of door panels P2 and P2, they are not shown. It may be referred to as a single door panel and a single back panel.

  In addition, the door panel P2 and the side panel P3 forming the box pallet may be folded in a middle folded state in the middle in the vertical direction, although not shown, instead of being made of a so-called single piece.

  And bottom panel P1 may have leg L for enabling the same box pallet to be stacked, in addition to having space A that allows fork insertion in a forklift (not shown) in the lower part.

  When the box pallet is formed as described above, the panel lock device S of the present invention is arranged horizontally on the door panel P2 side of the box pallet, that is, on the left and right upper portions of the front side of the door panel P2 in the drawing. And a lock pin 1 (see FIGS. 2, 3, and 4) that can be moved in the lateral direction that is the axial direction while being held and can be rotated about an axial core line that extends in the lateral direction. It becomes.

The panel lock device S of the present invention is provided on the side panel P3 side of the box pallet, that is, in the illustrated case , inside the frame that is the left and right upper portions of the side panel P3. It has an engaging portion 2 (see FIG. 3) that engages the distal end portion of the lock pin 1 and releases the engagement with the distal end portion of the lock pin 1 when the lock pin 1 is retracted.
At this time, as shown in FIG. 3, the engaging portion 2 includes an engaging plate 13 provided in the frame F of the side panel P3, and an intrusion of the tip of the lock pin 1 formed on the engaging plate 13 and It consists of a vertically long hole 13a that allows withdrawal.

  To explain a little, first, the lock pin 1 is made of a steel round bar as shown in the figure, and is integrally connected to a body portion (not shown) of the lock pin 1 so as to swing and move horizontally. It has the holding part 11 which enables this.

  At this time, the gripping portion 11 is also made of a round bar made of steel like the body portion of the lock pin 1, and in the drawing, the main body portion and the gripping portion 11 are formed by bending a round bar made of steel constituting the lock pin 1. And are integrally formed.

  By the way, as shown in the figure, the lower end portion of the gripping portion 11 is below the main body portion and is bent to an appropriate length so as to be parallel to the main body portion to be a grip assisting portion (not shown). As for the formation of the grip assisting portion, this may be omitted.

  The lock pin 1 shown in the figure is formed by bending a round bar made of a steel material to form the grip portion 11 and the grip assisting portion including the main body portion, thereby contributing to a reduction in component costs.

  Further, since the lock pin 1 shown in the figure is formed in a substantially U shape, for example, as compared with a case where the lock pin 1 is formed in a substantially square shape like the lock pin disclosed in Patent Document 1 described above, for example. In addition to reducing the material cost, it is possible to reduce the weight. Therefore, the force for preventing the lock pin 1 from rotating by its own weight can be advantageously reduced.

  Next, in the lock pin 1, the tip portion which is the left side portion in FIGS. 2, 3, and 4 is a hook portion 12 that is bent in a direction perpendicular to the axial direction of the main body portion. .

  As shown in FIG. 2, the hook portion 12 engages with the engaging portion 2 (see FIG. 3) when the lock pin 1 is rotated after advancement (see FIG. 3), and as shown in FIG. When the pin 1 is moved backward after being rotated, the engagement with the engagement portion 2 is released.

  That is, as shown by a solid line in FIG. 2, when the grip portion 11 of the lock pin 1 hangs down so as to face the front of the door panel P <b> 2, the hook portion 12 rises horizontally and engages. As shown in a virtual diagram in FIG. 2, when the gripping portion 11 in the lock pin 1 is lifted up in a horizontal direction, it falls down in a vertical direction and engages with the engaging portion 2. To release.

  As described above, the lock pin 1 having the grip portion 11 and the hook portion 12 and operating as described above is held in the horizontal direction at the upper left and right front portions of the door panel P2 while being held in the horizontal direction. It can be moved in the direction and can be rotated around the axis.

  Therefore, as shown in the figure, the main body portion of the lock pin 1 is horizontally provided by a guide member 3 attached to the front surface of the door panel P2 and an insertion hole 4 formed in a pillar material (not shown) forming the door panel P2. Supported by the state.

  At this time, the guide member 3 and the insertion hole 4 do not generate mischievous resistance between the lock pin 1 and the main body portion, and allow free insertion of the main body portion. Therefore, the lock pin 1 is movable and It can be turned.

  In addition, although shown, the guide member 3 is attached to the plate 5 attached to the front of the door panel P2. Alternatively, although not shown, the guide member 3 is directly attached to the front of the door panel P2. May be.

  Incidentally, with respect to holding the lock pin 1 so as to be movable and rotatable, in the illustrated case, one guide member 3 and the other insertion hole 4 are used. For example, in the proposal disclosed in Patent Document 1 described above, Compared to using a plurality of guide members, this is advantageous in that the number of parts can be reduced.

  Incidentally, when the guide member 3 is formed, the guide member 3 is formed to have an axial length, that is, the rocking of the main body can be effectively prevented while securing a predetermined amount of movement of the lock pin 1 in the main body. When the guide member 3 is formed so as to have an axial length, the above-described insertion hole 4 can be omitted, and the configuration can be further simplified.

  While the lock pin 1 is formed as described above, in the panel lock device S, a locking portion that is provided on the door panel P2 and prevents mischievous rotation of the lock pin 1, that is, FIG. As shown in FIG. 2, the forward locking portion 6 that allows the gripping portion 11 to be fitted when the lock pin 1 moves forward is provided.

  Incidentally, in this embodiment, as shown in FIG. 3, as shown in FIG. 3, the backward locking portion 7 is formed in the same structure as the forward locking portion 6 and allows the gripping portion 11 to be fitted when the lock pin 1 is retracted. Have

  At this time, in the present invention, the forward locking portion 6 prevents the lock pin 1 from being mischievously rotated, and the connection state between the door panel P2 and the side panel P3 by the lock pin 1 is reliably maintained. From this point of view, it cannot be said that the above-described backward locking portion 7 is absolutely necessary.

  Therefore, in the following description, explanation of the forward locking portion 6 will be omitted, so that the description of the backward locking portion 7 will be omitted. Since this is recognized as necessary, this will be described later.

  By the way, the forward locking portion 6 has a pair of sandwiching pieces 6a and 6b on which the gripping portion 11 is present, and any one of the pair of sandwiching pieces 6a and 6b, for example, the sandwiching piece 6a It has a stopper portion 6c that prevents the gripping portion 11 from coming off from between the pair of sandwiching pieces 6a, 6b.

  At this time, the pair of sandwiching pieces 6a and 6b are planted on the plate 5 attached to the front surface of the door panel P2, but instead of this, the plate 5 is not shown. In this case, when forming the locking portion according to the present invention, the number of so-called parts can be reduced.

  On the other hand, in the present invention, from the viewpoint of preventing mischievous rotation of the lock pin 1, instead of the gripping portion 11 of the lock pin 1 being between the pair of clamping pieces 6a and 6b, a stopper The portion 6c presses the gripping portion 11 toward the other sandwiching piece 6b, and the gripping portion 11 cannot move between the pair of sandwiching pieces 6a, 6b due to the frictional resistance at that time. The escape of the grip portion 11 from between the pieces 6a and 6b may be prevented.

  In addition, the convex portion as the stopper portion 6c may be formed on both of the sandwiching pieces 6a and 6b as shown in the drawing, instead of being formed on any one of the sandwiching pieces 6a described above. is there.

Then, for the shape of the stopper portion 6c, where shown, but as it were it is a point-like protrusions, instead of this, although not shown, may be a rib-shaped convex portion.

  In addition, in the place shown in the figure, as the locking part, there is a backward locking part 7 in addition to the forward locking part 6, but this backward locking part 7 is also not described in detail, Similar to the stopper 6, it has a pair of clamping pieces 7 a and 7 b and a stopper 7 c.

  By the way, in the place shown in the figure, the locking portions are the two positions of the forward locking portion 6 and the backward locking portion 7, because the lock panel 1 is connected to the door panel P2 and the side panel P3. When the lock pin 1 is released, that is, as shown in FIG. 4, when the lock pin 1 is retracted and the door panel P2 and the side panel P3 are no longer connected, the lock pin 1 is freely rotated. This is because it is not preferable that the free movement is allowed.

  Then, by providing the retreating locking portion 7, the lock pin 1 in the retreated state is rotated and the gripping portion 11 and the grip assisting portion are prevented from swinging against the front surface of the door panel P2, so-called Noise generation can be avoided.

  Further, since the locking portion 7 at the time of retraction is provided, the main body portion of the lock pin 1 in the retracted state is fixed with respect to rotation and movement, so that the hook portion 12 that is the tip portion of the lock pin 1 is fixed. For example, there is an advantage that it does not become an obstacle when the door panel P2 and the side panel P3 are connected.

  By the way, for example, in the forward locking portion 6, the gripping portion 11 of the lock pin 1 is located between the pair of sandwiching pieces 6a and 6b, and the stopper portion 6c faces the gripping portion 11 toward the other sandwiching piece 6b. Although it may be possible to prevent the gripping part 11 from coming off between the pair of sandwiching pieces 6a and 6b by pressing, at this time, between the stopper part 6c and the gripping part 11 and the gripping. The grip portion 11 cannot move between the pair of sandwiching pieces 6a and 6b due to the frictional resistance between the portion 11 and the other sandwiching piece 6b.

  In other words, the frictional resistance prevents the movement of the gripping portion 11, that is, the rotation of the main body portion of the lock pin 1, and this point can be considered to be different from the proposal disclosed in Patent Document 1 described above. .

  However, in the proposal disclosed in the above-mentioned Patent Document 1, since it depends on the frictional resistance between the main body portion and the portion where the lock pin is opposed to the grip portion, the grip portion which is a portion separated from the main body portion as in the present invention. The present invention is advantageous in that the so-called deterring force for preventing rotation can be reduced as compared with the case where the resistance depends on the frictional resistance between 11 and the opposite portion.

  This has not been reworked, and the present invention makes it possible to increase the functionality of the rotation prevention mechanism for preventing mischievous rotation of the lock pin, and to enable generation of a large frictional resistance. This is advantageous in that it is not necessary to employ a configuration, and so-called component costs can be reduced.

  As described above, the panel lock device S formed as described above is used as a means for connecting the door panel P2 to the side panel P3 when the box pallet is formed. In this case, the door panel P2 is used. In order to facilitate the aiming of the side panel P3, the side panel P3 includes an auxiliary frame 8 made of an angle material facing the corner of the door panel P2.

  Therefore, when connecting the door panel P2 to the side panel P3, as shown in FIG. 3, when the door panel P2 is adjacent to the side panel P3 while adjoining the auxiliary frame 8, the front end of the lock pin 1 is used. The hook portion 12 can be easily advanced toward the engaging portion 2 provided on the side panel P3 side.

  The frame 8 has a hole that allows the hook portion 12, which is the tip of the lock pin 1, to pass therethrough, that is, a hole 8 a formed of a vertically long hole or a U-shaped hole, and the engagement portion 2 described above. Although not shown in detail, it is also composed of a vertically long hole or a U-shaped hole, like the hole 8a.

  By the way, as for the engaging portion 2, as shown in the figure, it is composed of a vertically long hole or a U-shaped hole. However, as long as it is possible to engage and release the hook portion 12 which is the tip portion of the lock pin 1, Instead of this, although not shown, for example, it may be formed in a rod shape or a belt shape.

  As described above, the panel lock device S of the present invention has been described as enabling the selection of the connection between the door panel P2 and the side panel P3 constituting the box pallet. From the viewpoint of functioning, as long as it has a panel corresponding to the door panel P2 and a panel corresponding to the side panel P3, it may be used to enable or disable the connection. Of course.

  In a box pallet, it is suitable for effectively preventing mischievous rotation of a lock pin held on the door panel side when maintaining the connected state of the door panel and the side panel.

DESCRIPTION OF SYMBOLS 1 Lock pin 2 Engagement part 3 Guide member 4 Insertion hole 5 Plate 6 Forward locking part 6a, 6b, 7a, 7b Holding piece 6c, 7c Stopper part 7 Reverse locking part 8 Auxiliary frame 8a Hole 11 Gripping part 12 Hook as the tip A Space L Leg P1 Bottom panel P2 Door panel P3 Side panel S Panel lock device

Claims (6)

A bottom panel, a pair of door panels and a pair of side panels standing up from four sides of the bottom panel, a frame made of a reinforcing pipe provided around the door panel and the side panel, and the door panel A plate attached to the front surface, a guide member attached to the plate , a lock pin that is movable in the axial direction while being held horizontally by the guide member, and is rotatable about the axis , in the lock pin boxes pallet comprising possess an engaging portion for engagement with the distal end of the locking pin during retraction of is engaged with the distal end portion of the lock pin during forward of the locking pin In the panel lock device, the engagement portion is provided in the frame of the side panel, and the engagement plate is formed on the engagement plate so that the distal end portion of the lock pin is inserted. Consists of a vertically elongated hole to allow output, said locking pin has a grip portion to be viewed from the front L-shaped to allow the tilting operation and the horizontal movement is connected integrally to the locking pin, the plate has an engagement portion for fitting the gripping section to the standing state, the engaging portion and has a pair of holding pieces that Soo clamping the gripping portion, relative the pair of holding pieces inward The stopper portion is formed of a convex portion that faces, and the stopper portion presses the gripping portion toward the other sandwiching piece that faces, or the gripping portion is detached from the pair of sandwiching pieces. A panel lock device characterized in that it is prevented from being pulled out.   The forward locking portion allows the gripping portion to be fitted when the locking pin is advanced, and the backward movement allows the gripping portion to be engaged when the lock pin is retracted. The panel lock device according to claim 1, comprising a time locking portion.   The said lock pin has a main-body part formed in a rod shape, and the said holding part connected to this main-body part is connected in the direction orthogonal to the axial direction in this main-body part. Panel lock device.   4. The panel lock device according to claim 1, wherein the lock pin is supported in a horizontal state by a guide member attached to the door panel.   While the tip end portion of the lock pin is formed as a hook portion that is bent in a direction perpendicular to the axial direction, the hook portion engages with the engagement portion when the lock pin is rotated after being advanced. 5. The panel lock device according to claim 1, wherein the engagement with the engaging portion is released when the lock pin is retracted after being rotated.   The said engaging part is formed in the said side panel side, and has a vertically long hole or a U-shaped hole which accept | permits the engagement of the front-end | tip part in the said lock pin. The panel lock device according to claim 3, 4 or 5.

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