JP5528275B2 - Handle type connection structure of assembling box pallet - Google Patents

Description

  The present invention relates to an assembling box pallet that accommodates various articles so that they can be handled by a forklift. More specifically, the assembling box pallet is attached to the assembling box pallet, and the assembling box pallet is disassembled after the articles are transported. Belongs to the technical field of handle-type connection structure, which is convenient to quickly and firmly assemble each face plate into a strong box-shaped structure when returning the goods with a small bulk and improving the efficiency at the time of return .

Prefabricated box pallet, FIG 1A~ so presumably confirmed the overall picture from D, plane can dismantle the front plate 2 and rear plate and left and right side plates 3 along the four sides of the upper surface of the pallet base 1 having a rectangular Assembled in a box shape. At this time, the lower end portions of the face plates 2 and 3 are relatively easily and firmly fastened with, for example, a stopper pin provided in a groove around the upper surface of the pallet base 1 with a structure for hooking a hole in the lower portion of the face plate. A handle-type connection structure 4 is provided at the upper part (upper corner) of the corner where the front plate 2 or the back plate and the left and right side plates 3 intersect to easily and firmly connect the double-sided plates by manual operation. Has been.
Conventionally, as for the handle type connection structure used for assembling and dismantling work of the assembly type box pallet, various structures and types are known, including those described in the following Patent Documents 1 and 2, for example. Belongs to well-known.

Japanese Patent No. 3438184 JP 2001-139031 A

First, in the handle type connecting structure described in the above-mentioned Patent Document 1, a rotating shaft (latch rod) operated by a handle is installed on one face plate so as to be rotatable and movable, and a tip portion of the rotating shaft is bent. Thus, a hook portion is formed, and the handle is attached to the rotating shaft with a phase shifted by 90 degrees with respect to the hook portion. The other face plate is provided with a latch hole for engaging and disengaging the hook portion, and the support (vertical frame) of the one face plate is provided with a hollow portion for accommodating the hook portion pulled out from the latch hole of the other face plate. It has been configured.
The handle type connecting structure can easily and firmly connect and assemble the two face plates that meet at the corner by the handle operation, or can easily perform the operation of releasing the connection. However, since there is no positioning means for stopping the handle or rotating shaft at the position where the two face plates are connected, or conversely, the connection is broken and the both face plates are disassembled, if the handle rotates for some reason, Risk of inadvertent disconnection of the face plates and dismantling, or the hook part of the bag housed in the hollow part of one face plate inadvertently jumps outward and damages surrounding people and things There is a risk.

In the handle type connecting structure described in Patent Document 2, a latch bar operated by a handle is installed on one face plate so as to freely rotate and move, and a tip portion of the rotating shaft is formed to form a claw portion (hook). The handle is attached to the claw part so as to hang from the rotating shaft with a phase shift of about 90 degrees. In the case of this handle type connection structure, by operating the handle, establishing links two face plates intersecting at the corner portion strongly to the solid, or conversely by solving the connection it can be easily performed operations to dismantle. However, in the case of this handle-type connection structure, the handle is hung down when the handle is in a suspended state at the forward position where the two face plates are connected by the claw portion (hook portion), and conversely at the position where the connection is released and retreated. A positioning stopper is provided to hold the handle when in the state. Accordingly, by attaching fastening the handle to the scan stopper, risk of latch bar is released carelessly rotated connected face plates mutually, or hurt the surrounding people and goods hook is carelessly jump out outward There is no danger.

However, in the case of the handle type connecting structure described in Patent Document 2, the latch rod is moved upward as a precondition for providing and functioning the positioning stopper at the forward and backward positions of the handle. A U-shaped handle is attached, and a bearing material with a downward U-shape is installed on the face plate to allow the stroke of the U-shaped handle to move from the forward position to the backward position. It is essential to install a positioning stopper configured to receive and clamp the vertical side when the handle is in a hanging state on the inner side of the vertical side on both the left and right sides of the bearing member. It is.
As a result, the number of parts of the handle-type connection structure increases, and it takes time and labor to manufacture .

Therefore, the object or solution of the present invention is that the latch bar can move when the handle is rotated upward by a certain angle, and conversely, when the handle is turned downward or hangs down, the latch bar cannot be rotated inadvertently. It is to provide a handle type connecting structure that is in a positioning state, can be assembled and disassembled easily and efficiently, and is extremely easy to operate and simple in structure.

As means for solving the problems of the prior art, the handle type connecting structure of the assembly type box pallet according to the invention described in claim 1,
In front plate 2 and the prefabricated box pallet the backplate and left and right side plates 3 Ru assembled disassembled coupled to the handle type connection structure 4 planes along the four sides of the pallet base 1 having a rectangular,
The front plate 2 or the bearing material 5 was placed back plate and a top of the side plate 3 and intersect the corner portions of the right and left to one side plate 2, movably latch bar 6 is the horizontal direction, and rotation Friendly mounted on the ability, the distal end of the latch bar 6 is formed a hook part 7 hooked faceplates 3 of the counterpart, the handle 8 for manually operating the latch bar 6 is attached to the latch bar 6.
The handle 8 constrains rotation of the latch bar 6 can to be directed downward, the locking member 9 to allow movement of the same handle 8 horizontally when a predetermined angular rotation upward, the shaft receiving member 5 or it is kicked set to the face plate 2.
The latch rod 6 has at least a length range S that moves along the locking member 9. The latch rod 6 is restrained when the handle 8 is directed downward, and can be moved when the handle 8 is rotated upward by a certain angle. Thus, the shaft is composed of a shaft member having a modified cross section with different turning radii from the rotation center line.
The longitudinal frame 2b at the corner portion of the face plate 2 has a through-hole 2c having a shape and a size that allows the hook portion 7 to pass in a state where the handle 8 is rotated upward to an angle at which the latch bar 6 can move. Is formed.
In the vertical frame 3a of the mating face plate 3 adjacent to the face plate 2 to which the bearing member 5 is fixed, a long hole through which the hook portion 7 can pass is rotated by the handle 8 to an angle at which the latch bar 6 can be moved . It is formed in a direction that matches the hook portion 7.
The latch 8 is rotated by the handle 8 to a movable angle to advance, the hook portion 7 at the tip is passed through the long hole 3c of the vertical frame 3a in the face plate 3 on the other side, and the handle 8 is returned to the downward state to conducted assembly for connecting the face plates 2 and 3, the dismantling of solving the coupling hook part 7 rotates upward the latch bar 6 through an angle which is movable from the elongated hole 3c of the release de is allowed faceplate another in the same handle 8 The latch bar 6 is retracted so as to retract the hook portion inside the face plate, and the handle 8 is returned to the downward state, the rotation is restrained by the locking member 9 , and the unmovable state is positioned.

The invention described in claim 2 is the handle-type connection structure 4 of the assembly-type box pallet described in claim 1,
The locking member 9 is composed of a spring-like plate member that elastically contacts the outer surface of the latch bar 6 and generates a certain amount of frictional force.

The invention described in claim 3 is the handle type connecting structure 4 of the assembly type box pallet described in claim 2 ,
The locking member 9 is formed to be bent into a substantially L shape having a spring characteristic plate member and a vertical surface portion 9a and the horizontal portion 9b, the upper end of the vertical surface portion 9a is, before Symbol one face plate 2 of the upper frame 2a It is attached to the bearing member 5 fixed to the head, and the horizontal surface portion 9b is installed so as to contact the upper surface side or the lower surface side of the latch bar 6.

According to a fourth aspect of the present invention, there is provided the handle-type connecting structure for the assembly-type box pallet according to the first aspect,
The locking member is made of a rigid rod-shaped or block-shaped material that contacts the outer surface of the latch rod to generate a certain amount of frictional force.

The invention described in claim 5 is the handle type connection structure 4 of the assembly-type box pallet described in any one of claims 1 to 4,
The latch bar is made in the shaft member of a circular cross-section the locking member to its outer surface to generate a frictional force of a predetermined magnitude to come in contact, by solving the coupling faceplate cross from the forward position for connecting at least two of the face plate In the range of the length of the moving stroke to the retracted position for storing the hook part inside the face plate, a flat part for releasing the contact of the locking member or reducing the frictional force is formed over a certain rotation angle and the cross section is It is characterized by being formed in a kamaboko shape.

The invention described in claim 6 is the handle-type connecting structure 4 for the assembly-type box pallet described in any one of claims 1 to 4,
The locking of the latch rod, perpendicular sectional shape and its axis of rotation and a large diameter outer peripheral surface for frictional radius of rotation for generating a frictional force of a predetermined magnitude locking member to come in contact, and conversely a small diameter outer surface of the small turning radius to reduce contact is released or frictional force between the members, each oval cross-sectional shape which is formed over a period of the rotation angle, Moshiku evenly sectional square cross-sectional shape, or irregular cross-sectional shape It is comprised by the shaft material of this.

The invention described in claim 7 is the handle-type connection structure 4 of the assembly-type box pallet described in any one of claims 1 to 4,
The latch rod has a crank shape whose eccentric shaft portion is a length range of a moving stroke from an advanced position where at least two face plates are connected to a position where the hook portions are retracted after releasing the coupling between the face plates. The convex outer peripheral portion of the eccentric shaft portion is in contact with the locking member to generate a frictional force having a certain magnitude.

The invention described in claim 8 is the handle type connection structure 4 of the assembly type box pallet described in any one of claims 1 to 4,
The latch rod has a length range of a moving stroke from an advanced position connecting at least two face plates to a position where the hook portion is retracted after releasing the coupling between the face plates, and the outer diameter surface of the latch rod It is characterized in that it is formed in a composite shape in which at least one protrusion is provided on the same outer diameter surface or a plurality of protrusions are intermittently attached along the axial direction of the latch rod.

The assembly type box pallet handle-type connecting structure 4 according to the present invention includes a latch bar 6 (16 , 26) and a latch member 9 (19, 29, 39, 49. The same applies in this paragraph). When the handle 8 is in a downward (or drooping) state within the length range S, the latch bar 6 (16, 26) cannot be moved, and can be moved by rotating the handle 8 upward to a certain angle. as described above, constituted by the axial material of different irregular radius of gyration is the magnitude of the rotation center line of the latch bar 6 (16, 26), whereas, the locking member 9, the latch bar 6 (16, 26) since a configuration for generating a frictional force of a predetermined magnitude to come in contact to the outer surface, with a handle 8 by a downward or sagging state, latch bar 6 (16, 26) are closely positioned in immovable state. That is, as in Patent Document 2, the operation of fastening the handle 8 to the positioning stopper is unnecessary, and the operability and workability are excellent. In addition, if it is visually confirmed that the handle 8 is in a state of hanging downward , the latch bar 6 (16, 26) is moved without further confirmation by touching the handle 8 with a hand. You can be confident that it is positioned in an unusable state, and there is a risk that the box plates will be inadvertently disconnected and the box pallet will be disassembled, or the hook part 7 will be inadvertently popping out of the face plate 2 The risk of damaging people and things can be prevented.
Therefore, for workers on the spot who are busy transporting goods using a large number of box pallets, it does not take time and trouble to confirm the actual situation of the handle type connecting structure 4, and the work of transporting goods is not troublesome. Can be carried out extremely efficiently and safely.
Moreover, the handle type connecting structure 4 of the present invention is mainly composed of the latch rod 6 (16, 26) having the above-mentioned configuration, the handle 8 and the locking member 9, and the handle 8 is simply a bar shape or an L-shape. Therefore, the number of components is small, the configuration is simple, the manufacture is easy, and the device can be provided at a low cost.

It is the front view which showed the assembly-type box pallet which is the Example of this invention. It is a perspective view which shows the state which connected the two face plates with the handle type connection structure in a box pallet same as the above. Retracting the latch bar handle type connection structure-out solutions the coupling of the a perspective view of a state accommodating the hook portion in the plane plate. It is a disassembled perspective view of face plates mutually. A is a front view of the main part where the latch bar of the handle type connection structure of the assembly type box pallet is advanced to enable the two face plates to be connected, B is the left side view of the same, and C is c- in FIG. It is c sectional drawing. A is a front view showing a main part in a state where two face plates are connected by a latch rod having a handle type connection structure, B is a left side view of the same, C is a cross-sectional view taken along a line cc in FIG. It is an enlarged view of a circle d part. A is a front view of the latch bar, and B and C are bb and cc cross-sectional views of FIG. A to D are end views showing different cross-sectional shapes of the latch bar. A is a front view showing a state in which the latch bar is movable in the horizontal direction, and B is a front view showing a rotational braking state by a latch member of the previous latch bar. A second embodiment of the present invention shows a front view of a main part of a state in which two face plates are connected by a latch rod having a handle type connection structure, B is a left side view of the same, and C is a c- c is a cross-sectional view, and D is an enlarged view of a circle d portion of FIG. A third embodiment of the present invention shows a front view of a main part of a state in which two face plates are connected by a latch rod having a handle type connection structure, B is a left side view of the same, and C is a C- C sectional view, D is an enlarged view of a circle d portion of FIG. FIG. 3 shows a third embodiment, in which A is a front view of a main part in which a latch bar of a handle type connecting structure is advanced and two face plates can be connected, B is a left side view of the same, and C is FIG. C-C sectional view, D is an enlarged view of a circle d portion of FIG. 4 shows a fourth embodiment, where A is a partially enlarged view of a latch rod having a handle type connection structure, B is a sectional view taken along line BB in FIG. A, and C is a state in which two face plates are connected by a latch rod with respect to a main part. The front view and D which are shown are DD sectional drawings of C figure. In the fifth embodiment, A is a partially enlarged view of a latch rod having a handle type connection structure, B is a sectional view taken along line BB in FIG. A, and C is a state in which two latches can be connected by advancing the latch rod. D is a sectional view taken along the line DD in FIG. C, E is a front view showing the state where the two face plates are connected by a latch bar, and F is a sectional view taken along the line FF in FIG. . It is the elements on larger scale which showed the handle type connecting device concerning Example 6. FIG. It is the elements on larger scale which showed the different form of the handle type coupling device which concerns on Example 6. FIG. It is the elements on larger scale which showed the different form of the handle type coupling device which concerns on Example 6. FIG.

To explain with reference to reference numerals in FIGS. 1-7, the assembly plane was disassembled coupling the back plate and the right and left side plates 3 and a front plate 2 along the four sides of the pallet base 1 having a rectangular This is implemented as a handle type connecting structure 4 attached to the assembly type box pallet.
This handle type connecting structure 4 is an upper portion (upper corner) of a corner portion where the front plate 2 or the back plate and the left and right side plates 3 intersect, and is attached to a bearing member 5 fixed to one face plate 2 with a latch rod. 6 to be movable in the horizontal direction, and is attached to the rotation Allowed ability. A hook portion 7 is formed at the front end portion of the latch bar 6 to hold the mating face plate 3. A handle 8 for manually operating the latch bar 6 is attached to the latch bar 6.
The handle 8 is restrained inadvertent rotation of the latch bar 6 can to be downward (hanging) state, the locking member 9, horizontally movable rotates a certain angle to the handle 8 upward , it eclipsed sets in the shaft receiving member 5 or the face plate 2. More specifically, the locking member 9 is formed of a spring plate member that elastically contacts the outer surface of the latch bar 6 and generates a certain amount of frictional force. The locking member 9 is formed by bending a spring-like plate member into a substantially L shape, and its vertical surface portion 9a is fixedly attached to the one face plate 2 or the bearing member 5 and the horizontal surface portion 9b is a latch bar. 6 is arranged in contact with the upper surface side or the lower surface side.
The latch rod 6 has a length range S that moves along the locking member 9 at least. When the handle 8 is turned downward, the latch rod 6 cannot be rotated carelessly , and the handle 8 is fixed upward. It is composed of shafts with irregular cross-sections that have different turning radii from the rotation center line so that they can move in the horizontal direction when rotated by an angle. More specifically, the latch bar 6 is composed of a shaft member having a circular cross section having an outer diameter that generates a predetermined amount of frictional force by elastically contacting the locking member 9 to the outer surface thereof, and includes at least two face plates. The length range S of the moving stroke from the forward position where the two and the three are connected to each other and the position where the hook portion 7 is retracted after the hook portion 7 is accommodated in the face plate 2 is released. Or it consists of the shaft material formed in the flat part 6a which reduces a frictional force, and the cross section was formed in the kamaboko shape. Alternatively, the cross-sectional shape perpendicular to the rotation center line has a large diameter outer peripheral surface 6b for friction having a rotating radius that elastically contacts the locking member 9 to generate a friction force of a certain size, and conversely the locking member. a small-diameter outer surface 6a of the small turning radius contact to reduce the unrolled or friction between 9 are each a constant oval cross-sectional shape which is formed over the rotational angle, Moshiku the rectangular cross-sectional shape, or irregular cross-sectional shape And a shaft member having a uniform cross section.
In the vertical frame 2b at the corner portion of the face plate 2 as described above, a through-hole having a shape and a size that allows the hook portion 7 to pass therethrough while the handle 8 is rotated upward to an angle at which the latch bar 6 can move. 2c is formed.
In the vertical frame 3a of the mating face plate 3 adjacent to the face plate 2 to which the bearing member 5 is fixed, a long hole through which the hook portion 7 can pass is rotated upward to an angle at which the latch bar 6 can be moved by the handle 8. It is formed in a direction that coincides with the hook portion 7 at the time.
In the handle type connecting structure 4 of the present invention, the latch bar 6 is rotated up to an angle at which the handle 8 can be moved by the handle 8 to advance the latch bar 6, and the hook portion 7 at the tip is connected to the vertical frame 3 a on the face plate 3 on the other side. Assembling to connect the two face plates 2 and 3 is performed by returning the handle 8 downward or in a suspended state. Conversely, by rotating upward the same handle 8 to the angle which can move latch bar 6 leaving the hook 7 from the elongated hole 3c, disassembly is carried out. Then, the latch bar 6 retracted and the hook portion 7 is accommodated in the face plate 2 is positioned in a non-movable state by the locking member 9 by returning the handle 8 downward or hanging down.

Also in this invention, the assembly box-pallet, erected to FIG 1A~ as shown in D, the front plate 2 along the four sides of the upper surface of the pallet base 1 plane a rectangular rear plate and left and right side plates 3 The handle type connecting structure 4 is assembled in a box shape that can be disassembled. Incidentally, when showing an example of the size of the box pallet, the width dimension in the left-right direction (longitudinal direction) of FIG. 1A showing the front is less than 1500 mm, the height dimension from the floor is about 1000 mm, and the short direction The width dimension of is about 1100 mm.

The means for assembling the front plate 2, the rear plate, and the lower portions of the left and right side plates 3 erected along the four sides on the pallet stand 1 so as to be disassembled is omitted in detail, but the above-described prior art is omitted. For example, a conventional general means such as a method in which a hole is formed in the lower part of each face plate and a retaining pin provided in a groove around the upper surface of the pallet base 1 is hooked into the hole and assembled is preferably implemented.

Next, the structure of the handle type connection structure 4 which connects and assembles the upper part of the corner part where the above-mentioned front plate 2 or back plate and the left and right side plates 3 intersect will be described with reference to FIGS.
One face plate, in the case of the illustrated example, an upper corner portion close to the corner portion of the front plate 2, more specifically, a square pipe-like upper portion fixed to the upper edge of the front plate 2 as shown in FIG. A bearing member 5 having a U-shape downward is fixed along the lower bottom surface of the frame 2a by means such as welding. Installation vertical side portion 5a of the left and right of the bearing member 5, the 5a, rod latch bar 6 made of a shaft member of the shape is supported in the through state to the horizontal direction, movement in the horizontal direction, and the rotation available- Has been.
In the case of the illustrated example, the latch bar 6 has a hook 7 connected to the front plate 2 by hooking the face plate on the other side, in the illustrated example, the left side plate 3, at the left end in the figure. Is formed by welding a small piece of a shaft material having the same diameter into a substantially T-shape. Of course, the hook portion 7 can also be formed by bending the tip of the latch bar 6 directly to a required angle , as indicated by the wavy line in FIGS.
Incidentally, in FIG. 2, for convenience of illustration, A represents the side plate 3 with a one-dot chain line, and B does not illustrate the side plate 3. The same applies to FIG. 3 and FIGS.

A handle 8 for manually moving the latch bar 6 or rotating the latch bar 6 in the vertical direction is attached to the latch bar 6 so as to hang vertically downward from the latch bar 6 as shown in FIG. 3A. As shown in FIG. 3A, the illustrated handle 8 has an upward U shape, and the upper ends of the vertical side portions 8a, 8a on both sides thereof are joined to the latch rod 6 by welding or the like. However, regarding the handle 8, in the case of the present invention, it is not necessary to have an upward U-shape, and it may be L-shaped, or may be a simple straight bar shape. It will be understood from the following explanation that there is no problem.
In the case of the illustrated embodiment, the bearing member 5 having a U-shape downward and the handle 8 having a U-shape upward have only the left side 8a of the handle 8 as shown in FIG. 3A. The left and right vertical sides 5a and 5a are arranged in a staggered arrangement located inside the left and right vertical sides 5a and 5a, and the moving stroke of the latch bar 6 by the handle 8 is secured to a necessary and sufficient size.

Next, the handle 8 is located at a position close to the right vertical side 5a of the bearing member 5 having a U-shaped downward shape, more specifically at a position close to the retracting direction of the latch bar 6. The latch bar 6 is not allowed to move when it is in a downward or drooping state, and when the handle 8 is rotated upward by a certain angle, approximately 90 degrees as shown in FIG. Is installed.
The illustrated locking member 9 is formed of a spring-like plate member that elastically contacts the outer surface of the latch bar 6 and generates a certain amount of frictional force. Specifically, the locking member 9 shown in FIGS. 2 and 3 is made of a spring steel plate member having a thickness of 2 mm and a lateral width of about 30 mm when viewed in the direction of FIG. 2A from a vertical surface portion 9a and a horizontal surface portion 9b. becomes formed by bending into a substantially L-shaped, upper end of the vertical surface portion 9a is fixed by bonding by welding or the like to the bottom surface of the horizontal side portion of the bearing member 5, the lower surface of the horizontal portion 9b is latch bar 6 Installed in contact with the However, the locking member 9 can also be implemented by directly installing the vertical surface portion 9a on the face plate 2 or directly on the upper frame 2a of the same face plate 2.
In addition, the vertical surface portion 9a of the illustrated locking member 9 is installed in an arrangement having a slight gap between the rear surface and the front plate 2 strictly, as shown in an enlarged view in FIG. 3D. When the latch rod 6 is rotated by 8, the latch rod 6 is appropriately flexible and smoothly follows the change of the radius of rotation of the latch rod 6.

Here, the detailed structure of the latch rod 6 will be described with reference to FIGS.
As described above, the latch rod 6 is basically composed of a round rod-shaped shaft member (see FIG. 4B) having a circular cross section, for example, a round steel rod shaft member having an outer diameter of about 9 mm and a length of about 180 mm. Has been. The left and right sides of the bearing member 5 having a U-shape in the downward direction so that it can be moved forward and backward by a stroke S of about 93 mm in the horizontal direction by manual operation with the handle 8 and rotate at least about 90 degrees. This is because the vertical side portions 5a and 5a are installed with both ends supported.
At least in the range of the length S corresponding to the moving stroke of the intermediate portion of the latch bar 6, if the handle 8 is turned downward (hanging down), the latch bar 6 cannot be rotated inadvertently. As shown in FIG. 2C, it has a deformed cross section (see FIG. 2C) having a different radius of rotation from the rotation center line so that the latch bar 6 can move in the horizontal direction when rotated about 90 degrees as shown in FIG. 2C. .
Specifically, as illustrated in FIGS. 4A to 4C, in the latch rod 6, from the advance position where the two of the front plate 2 and the side plate 3 are connected, to the position where the coupling between the face plates is released and retracted. In the length range S corresponding to the moving stroke, a flat portion 6a sufficient to release the contact of the locking member 9 or to reduce the frictional force is formed, and the cross section is formed in a kamaboko shape (FIG. 4C). The flat portion 6a is formed in a range of about 60 degrees as the rotation angle of the latch bar 6. In the illustrated example, the flat surface is recessed by a step of about 1 mm from the rotation radius of the original outer diameter of the latch bar 6. Is formed. The remaining rotation angle portion of about 300 degrees has a large diameter for friction that generates a frictional force large enough to prevent the latch rod 6 from rotating unintentionally by the strong contact of the horizontal portion 9b of the locking member 9. It is formed on the outer peripheral surface 6b, and is formed as an original outer diameter portion of the latch bar 6 in the illustrated example.

The relationship between the orientation of the flat portion 6a in the latch rod 6 and the orientation of the handle 8 and the hook portion 7 at the tip of the latch rod 6 will be described, for example, in the embodiment of FIGS. Thus, when the handle 8 is hanging vertically downward, the hook portion 7 at the tip of the latch bar 6 is oriented in the horizontal direction, and has a relationship having a phase difference of about 90 degrees. At this time, as shown in FIGS. 3C and 3D, the flat portion 6a of the latch bar 6 is oriented so as to be opposed to the front plate 2 in parallel, which is about 90 degrees counterclockwise with the handle 8. The relationship has a phase difference. Accordingly, in this state, the horizontal surface portion 9b of the locking member 9 inevitably contacts the original outer diameter portion of the latch rod 6, that is, the large-diameter outer peripheral surface 6b for friction, so that a sufficiently large friction force is generated. Then, the latch bar 6 is inadvertently brought into a non- rotatable state. That is, it is a positioning state.
However, as shown in FIGS. 2A and 2B, when the handle 8 is rotated approximately 90 degrees upward toward the front side to be in a horizontal posture, the flat portion 6 a of the latch bar 6 inevitably faces the horizontal surface portion 9 b of the locking member 9. It becomes the direction. For this reason, the contact between the horizontal plane portion 9b and the flat portion 6a is released, or even if the contact is made, the contact pressure is small and the frictional force is remarkably reduced, so that the latch rod 6 can be freely moved by the handle 8. It becomes possible.

Therefore, the latch rod 6 is not limited to the configuration having the flat portion 6a as long as the relationship between the above-described movement and inadvertent rotation cannot be realized. The cross-sectional shape perpendicular to the rotation center line is, for example, an oval cross-section material shown in FIG. 5A, the outer peripheral surface on the long diameter side is the large-diameter outer peripheral surface 6 b for friction, and the outer peripheral surface on the short diameter side is the locking member 9. It is possible to use a shaft member with a uniform cross-section that becomes a small-diameter outer surface 6a that is released from contact or reduces frictional force. Or four corners as shown in FIG. 5B in the way form cross members that chamfered to R shape, the outer peripheral surface of the long side is a large-diameter outer peripheral surface 6b friction, the short side of the outer peripheral surface engaging member 9 Even if a shaft member having a uniform cross-section that becomes a small-diameter outer surface 6a having a small turning radius that reduces the frictional force is used for the latch member 6, the same can be implemented. If a shaft member having such an equal cross section can be prepared as the latch member 6, it is easy to carry out without requiring the process of forming the flat portion 6a on the shaft member having a circular cross section as in the above-described embodiment.
Similarly, as illustrated in FIGS. 5C and 5D, a shaft member having a substantially triangular cross section or a shaft member having a substantially hexagonal cross section can be used. In this case, if the direction of the handle 8 is downward, one vertex of the triangle or hexagon is in contact with the horizontal surface portion 9b of the locking member 9 so that it cannot be rotated unintentionally . rotating 60 ° to to 30 ° the handle 8 upward, latch bar 6 becomes movable state.

Next, also in the case of the handle type connecting structure 4 of the present invention, the vertical frame 2b forming the vertical side of the front plate 2 has a shape and size that allows the hook portion 7 of the latch bar 6 to pass therethrough. long hole 2c is, the position where the hook portion 7 abuts in a state of being rotated about 90 degrees to an angle capable of moving the handle 8 the latch bar 6 in the horizontal direction (FIG. 2A-C), the angle of the hook portion 7 It is formed in a matching direction (see FIG. 2B).
On the other hand, in the embodiment of FIGS. 1B and 1C, which forms the vertical side of the side plate 3 which is the counterpart to be connected to the front plate 2, the vertical frame 3a using an angle has a latch bar that has moved as described above. The elongated hole 3c starting from the abutting position of 6 has a shape and size that allows the hook portion 7 to pass therethrough and is rotated to an angle (almost horizontal angle) at which the latch rod 6 can be moved by the handle 8. It is formed in a direction that coincides with the hook portion 7 (see FIGS. 1B and 1C). That is, the through-holes 2c and the long holes 3c are both formed in the same shape, the same size, and the vertical direction on a common horizontal line.

Therefore, according to the handle type connecting structure 4 of the present invention, when the assembling work is performed by connecting the front plate 2 and the side plate 3 of the assembly type box pallet, for example, as shown in FIG. When the handle 8 is hanging downward at a nearby position, first, as shown in FIG. 2C, the handle 8 is moved about 90 degrees toward the front side so that the latch bar 6 can move horizontally. Rotate upward (transition to FIG. 6A). Then, as described above, the horizontal surface portion 9b of the locking member 9 comes into contact with the flat portion 6a of the latch rod 6, the contact of the locking member 9 is released, or the contact friction force is remarkably reduced, and the latch rod 6 is The handle 8 can be freely moved. Therefore, the side plate 3 is applied along the vertical side of the front plate 2 as shown by the dotted line in FIG. 1C or 2A. Thereafter, the handle 8 is operated in the above-mentioned posture, and the latch bar 6 is moved forward by a necessary stroke. Incidentally, the above-mentioned forward movement for the required stroke is as follows. As a result, as shown in FIG. 3A, the left vertical side portion 8a of the handle 8 is located on the inner side surface of the left vertical side portion 5a of the bearing member 5. It is designed as a movement to a position where it almost touches.
Then, as shown in FIGS. 2A to 2C, the hook portion 7 at the tip of the latch rod 6 passes through the claw-passing long hole 2 c of the vertical frame 2 b that forms the vertical side of the front plate 2, and further on the side plate 3. It is also passed through the long hole 3c of the vertical frame 3a and protrudes outward. Therefore, the handle 8 is returned to the downward hanging state again as shown in FIGS. Then, the hook portion 7 rotates about 90 degrees and is hooked on the outside of the long hole 3c as shown in FIGS. 3A and 3B, and the assembly of connecting the two face plates 2 and 3 is achieved . On the its, the left side of the handle 8 as described above because the vertical side portion 8a is positioned substantially in contact positioned on the inner surface of the vertical side portion 5a of the left bearing member 5, the two face plates 2 and 3 There is no concern that the connected and assembled state is mechanically held tightly.
In other words, as long as the adjacent face plates 2 and 3 are connected in a state where the handle 8 faces downward (or hangs down), the connection state between the face plates is completely maintained, and the handle 8 receives the expected external force, vibration, and impact force. However, there is no concern that the connection between the face plates will be broken even if the box pallet does not swing inadvertently or if the box pallet is turned upside down.

On the other hand, when the two face plates 2 and 3 are separated and disassembled from the connected state of FIGS. 1B and 3A, B, first, the handle 8 is moved upward by about 90 degrees so that the latch bar 6 can move in the horizontal direction again. (See FIGS. 2A and 2C). Then, the hook portion 7 of the latch rod 6 has the same orientation as the long hole 2c and the long hole 3c of the adjacent face plate 3 as shown in FIG. 2B. In this way, the two face plates 2 and 3 can be disconnected and separated and disassembled. At the same time, the flat portion 6a of the latch bar 6 comes into contact with the horizontal surface portion 9b of the locking member 9, and the contact with the horizontal surface portion 9b of the locking member 9 is released or the contact frictional force is remarkably reduced. The rod 6 can be moved by operating the handle 8. Thus the latch bar 6 by operating the handle 8 is moved to the retracted direction so as to pass through the thus passed through the long hole 2c of the hook part 7 positive face plate 2 of the vertical frame 2b, causes housing the hook portion 7.
After the latch rod 6 is moved back to a certain limit position as described above, more specifically, the hook portion 7 is retracted to the extent that it hits the vertical side portion 5a on the left side of the bearing member 5 in the drawing, the handle 8 is again moved. When the latch rod 6 is returned to the state of hanging downward, the flat portion 6a again escapes to the back side, and the large-diameter outer peripheral surface 6b for friction comes into contact with the horizontal surface portion 9b of the locking member 9. Therefore, a sufficiently large contact frictional force is generated, and the latch bar 6 is brought into a non- rotatable positioning state (due to its own weight of the handle 8) .
If it can be visually confirmed that the handle 8 is in the downward (or drooping) state, there is no risk that the handle 8 will inadvertently swing with the dangle. Even if the face plates 2 and 3 are stacked or folded, the handle 8 There is no possibility that the handle type connecting structure 4 is damaged by the weight load of the stacked face plates 2, 3, or the like, or the face plates 2, 3 are damaged by the handle 8 or the like.

The configuration principle and most of the configuration of the handle type coupling structure 4 shown in FIGS. 7A to 7D are the same as those in the first embodiment. That is, also in the handle type coupling structure of the second embodiment, when the handle 8 is in a suspended state, the latch bar 6 cannot move, and the handle 8 is moved upward at a certain angle, for example, as shown in FIG. 2C. A locking member 9 that allows the latch rod 6 to be moved by the handle 8 when it is rotated 90 ° upward is provided. The locking member 9 is formed by bending a spring steel plate member that elastically contacts the outer surface of the latch bar 6 to generate a frictional force of a certain size into a substantially L shape. .
The feature of the second embodiment is that the upper end of the vertical surface portion 9a of the locking member 9 formed by bending the spring steel plate member into a substantially L shape is joined to the lower bottom surface of the horizontal side portion of the bearing member 5 by welding or the like. However, the horizontal surface portion 9 b is installed in an arrangement in contact with the upper surface side of the latch bar 6. As shown in the enlarged view of FIG. 7D, the main part of the configuration diagram is arranged such that the back surface of the vertical surface portion 9a is strictly arranged with a slight gap between the front plate 2 and the horizontal surface portion 9b is latched. It is configured to contact the upper surface side of the rod 6 and contact the outer peripheral surface of the latch rod 6 by a spring action in the counterclockwise direction to generate a contact friction force having a magnitude necessary for the positioning action.

Further, in the case of the second embodiment, the flat portion 6a having a small turning radius in the latch bar 6 is formed so as to face the front side with the front plate 2 as the back, and the handle 8 is formed in the same vertical direction as the downward hanging state. Yes.
Therefore, in the case of the handle type connecting structure 4 of the present embodiment, when the handle 8 is rotated clockwise from the near side to a certain angle, for example, about 90 degrees as shown in FIG. 6 also rotates together, and the flat portion 6a rotates about 90 degrees in the clockwise direction and assumes a horizontal posture upward. Therefore horizontal portion 9b of the locking member 9 is in a state of contacting to the flat portion 6 a. Therefore, the contact with the horizontal plane portion 9 b is also released or the contact frictional force is remarkably reduced, and the latch bar 6 becomes movable by the operation of the handle 8.
Since the remaining actions and operations are not different from those of the first embodiment, description thereof is omitted.

8 and 9 show a handle type connecting structure according to the third embodiment. This handle type connection structure 4 is different from the first and second embodiments in the structure of the locking member. The other constituent members such as the latch bar 6, the handle 8, the face plates 2, 3 and the like are the same as those in the first and second embodiments, so that the same reference numerals are given and the description thereof is omitted as appropriate.

The locking member 19 according to the third embodiment is formed in a steel piece block shape (or a thick steel bar shape (see FIGS. 10 and 11)) having high rigidity, and an upper side portion of the bearing member 5 having a downward U-shape. The upper end of the bearing member 5 is fixed to the upper side of the bearing member 5 by means of welding or the like at a position between the latch bar 6 and the latch bar 6 so as to be installed vertically downward. In addition, the material of the said locking member 19 is not limited to steel, If it is metal, it can implement suitably.
The locking member 19 has a vertical side of the bearing member 5 such that a large frictional force is generated by strongly contacting the central portion of the latch bar 6 supported at both ends by the left and right vertical side portions 5a and 5a of the bearing member 5. It is installed in the intermediate part of the parts 5a and 5a.
The lower end surface of the locking member 19, that is, the contact surface with the latch bar 6 is basically formed in a horizontal plane shape. However, the contact surface is not limited to a horizontal plane shape, and for example, the side where the rotation of the latch rod 6 is slightly raised is raised so that a necessary and sufficient frictional force can be generated by contact with the latch rod 6. It can be carried out by forming it on an inclined surface, or forming it into an upward semicircular concave shape or a downward semicircular convex shape. In short, the form of the lower end surface is determined in consideration of the balance with the friction locking effect exhibited by the friction with the latch rod 6.
The locking member 19 will be further described. In the illustrated embodiment, the contact portion with the latch bar 6 is described as the lower end surface, but the present invention is not limited to this. Depending on the installation mode in which the locking member 19 is attached to the bearing member 5 or the front plate 2, the other surface, for example, the side surface or the upper surface of the locking member 19 comes into contact with the latch rod 6 to generate a frictional force. can do.

The handle-type connecting structure 4 of the assembly-type box pallet using the locking member 19 having the above configuration will be described in more detail. In the case of the present embodiment, the handle 8 is formed in an upward U-shape, and its left and right vertical sides 8a. 8a, as shown in FIG. 8A, the left vertical side 8a is in contact with the right side of the left vertical side 5a of the bearing member 5, and the right vertical side 8a is the coaxial receiving member 5 Are arranged in contact with the right side surface of the right vertical side portion 5a, are integrally joined to the latch bar 6, and rotate integrally with the latch bar 6.
As can be understood from FIG. 8, when the handle 8 is in a vertically downward posture, the hook portion 7 of the latch bar 6 is in a horizontal horizontal position, and the large-diameter outer peripheral surface 6b for friction of the latch bar 6 is The positional relationship is such that a strong frictional locking force is generated that makes complete contact with the lower end surface of the locking member 19 and prevents the latch rod 6 from rotating (due to its own weight of the handle 8). .
Further, as can be understood from FIG. 9, when the handle 8 is rotated clockwise from the near side to a certain angle, for example, about 90 degrees as shown in FIG. The flat portion 6a rotates about 90 degrees in the clockwise direction, and assumes a horizontal posture upward. Therefore, the latch bar 6 is in a relationship in which the flat portion 6a faces the lower end surface of the locking member 19, and the contact and frictional force are eliminated.
Since the remaining operations and operations are not replaced with those of the first and second embodiments, description thereof is omitted.

The operational effects of the handle type connecting structure 4 according to the third embodiment are the same as those of the first and second embodiments. In particular, when the handle 8 is rotated from the downward position of FIGS. 8A to 8D (position where the rotation of the latch bar 6 is impossible) to the upper side of the front side to be in a horizontal lateral position, the latch bar 6 has a large frictional force. The contact with the lower end surface of the locking member 19 is eliminated from the state in which the outer peripheral surface 6b is in strong contact with the lower end surface of the locking member 19 and generates a frictional force, as shown in FIGS. The flat portion 6a faces the lower end surface of the locking member 19, and the contact and friction force are eliminated.
At this time, the hook portion 7 is vertically vertical, and can be inserted into and removed from the elongated hole 3 c of the left side plate 3. In the case of the present embodiment, as a method of releasing the connection between the face plates 2 and 3 (or connection), in addition to the method of removing the left side plate 3 to the left and performing it, the position of the side plate 3 is On the contrary, by operating the handle 8 in the horizontal sideways posture as it is as shown in FIG. 9A as shown by the right arrow P, the hook portion 7 of the latch bar 6 is moved into the long hole of the left side plate 3. It is possible to perform an operation of pulling out from 3c and releasing the connection, or an operation of connection by the reverse procedure.

FIG. 10 shows a handle type connecting structure according to the fourth embodiment. Compared with the first to third embodiments, the handle type connecting structure 4 has a non-contact surface portion (corresponding to the flat portion 6a) and a surface portion to be locked (the friction large portion). This corresponds to the diameter outer peripheral surface 6b). As the locking member 19 according to the fourth embodiment, the same locking member 19 as in the third embodiment is used (see paragraph [0033] above). The other structural members such as the face plates 2 and 3, the bearing member 5, the hook portion 7, and the handle 8 are the same as those in the first to third embodiments.

The latch bar 16 according to the fourth embodiment is basically configured using a steel bar having a circular cross section and a uniform outer diameter. The non-contact surface portion 16a and the locked surface portion 16b with the locking member 19 connect the axial length range S necessary for contact with the locking member 19, that is, connect at least two face plates 2 and 3. It is constructed by bending the so-called crank shape with the eccentric shaft portion as the length range S of the moving stroke from the forward position to the position where the mutual connection between the face plates is released and the hook portion 7 is accommodated in the face plate 2. ing.
Specifically, as shown in FIGS. 10A and 10B, the main part structure of the latch bar 16 is, for example, a steel bar having an outer diameter of φ8 mm and a straight rotation center line OO, and the contact range with the locking member 19 ( The range of the axial length S) is bent into a partially parallel crank shape, and the actual turning radius is reduced by about 2 mm on the one side compared to the turning radius of the shaft member's original outer diameter surface. It is formed on the non-contact concave outer peripheral portion 16a, and conversely, the opposite side surface is formed on the locked convex outer peripheral portion 16b whose rotational radius is increased by about 2 mm.

The handle-type connecting structure 4 of the assembly-type box pallet using the latch rod 16 and the locking member 19 having the above configuration will be described in more detail. In the case of this embodiment, the handle 8 is formed in an upward U shape, As shown in FIG. 10C, the vertical side portions 8a and 8a are arranged such that the left vertical side portion 8a is in contact with the right side surface of the left vertical side portion 5a of the bearing member 5, and the right vertical side portion 8a is The coaxial receiving member 5 is arranged so as to be in contact with the right side surface of the right vertical side portion 5a, and is integrally joined to the latch bar 16, and is configured to rotate integrally with the latch bar 16.
As can be understood from FIGS. 10C and 10D, when the handle 8 is in a vertically downward posture, the hook portion 7 of the latch bar 16 is in a horizontal horizontal position, and the outer periphery of the latched convex surface of the latch bar 16 is set. The part 16b is configured in a positional relationship that is in a positioning state in which a strong frictional locking force is generated by making complete contact with the lower end surface of the locking member 9. As a further consideration, the locked convex outer peripheral portion 16b indicates the convex direction of the locked convex outer peripheral portion 16b when the center line of the handle 8 is in a positive vertical state as shown in FIG. 10D. The center line is inclined to the near side by a slight angle θ and stops at a position slightly beyond the generation point of the maximum frictional force (by the angle θ in this embodiment). In other words, a safety measure technique that feels the dead point of rotation as a response is adopted.

The effect of the handle type connection structure 4 according to the fourth embodiment is the same as that of the first to third embodiments. More specifically, when the handle 8 is rotated from the downward position (positioning and fixing position) of FIGS. 10C and 10D to the upper side of the front side as indicated by an arrow R to be in a horizontal lateral position, the latch bar 16 has its locked convex surface. Since the outer peripheral portion 16b is in strong contact with the lower end surface of the locking member 19 and generates a frictional force, the contact with the lower end surface of the locking member 19 is eliminated, and the non-contact concave outer peripheral portion 16a is the locking member. The contact and frictional force are eliminated by facing the lower end surface of 19.
At this time, the hook portion 7 is in the vertical vertical direction (refer to FIGS. 9A and 9B), and can be inserted into and removed from the elongated hole 3 c of the left side plate 3. In the case of the present embodiment, as a method of releasing the connection between the face plates 2 and 3 (or connection), in addition to the method of removing the left side plate 3 to the left and performing it, the position of the side plate 3 is On the contrary, the operation of pulling the handle 8 in the horizontal sideways posture as it is as shown by the right arrow P in FIG. 10C, the hook portion 7 of the latch bar 16 is moved into the long hole of the left side plate 3. It is possible to perform an operation of pulling out from 3c and releasing the connection, or an operation of connection by the reverse procedure.

FIG. 11 shows a handle type connecting structure according to the fifth embodiment. Compared with the fourth embodiment, the handle type connecting structure 4 has a non-contact surface portion (corresponding to the non-contact concave outer peripheral portion 16a) and a locked surface portion (the above-mentioned non-contact concave outer peripheral portion 16a) of the latch bar. This corresponds to the structure of the outer peripheral portion 16b to be locked). Since the other constituent members such as the locking member 19, the face plates 2, 3 and the bearing member 5 are the same as those in the fourth embodiment, the same reference numerals are given and the description thereof is omitted as appropriate.

That is, the latch rod 26 shown in FIG. 11 is basically constructed by using a steel rod having a circular cross section and a uniform outer diameter. However, the surface portion to be locked with the locking member 19 is a surface portion to be locked with a steel wire or a steel rod whose outer diameter is as thin as about 2 mm in order to obtain a large turning radius necessary for strong contact with the locking member 19. The piece 27 cut into the required length S, that is, the moving stroke length range S from the advanced position connecting at least two face plates 2 and 3 to the position where the face plates are uncoupled and retracted, The latch bar 26 is configured to be integrally joined to a position to be a locked surface portion by superimposing (stacking) both axes in an arrangement in which both axes are parallel.
Specifically, as shown in FIGS. 11A and 11B, the main structure of the latch rod 26 is, for example, the latch rod 26 having an outer diameter of φ8 mm and a straight rotation center line OO, for example, the outer diameter of about φ2 mm. When the pieces 27 are joined in parallel and the rotational radius of the combined form including the pieces 27 is increased by about 2 mm by the outer diameter of the pieces, the locked convex surface portion (hereinafter, reference numeral 27 is also used). Is formed. Therefore, the original outer peripheral surface of the latch rod 26 excluding the piece 27 is configured as a non-contact surface portion that does not contact the locking member 19.

The handle type connecting structure 4 of the assembly-type box pallet using the latch bar 26 having the above configuration will be described in more detail. In the case of this embodiment, the latch bar 26 is a downward U-shaped fixed to the upper frame 2a of the front plate 2. The left and right vertical sides 5a and 5a of the bearing member 5 are horizontally supported so as to freely rotate and move in the axial direction, and rotate integrally with the handle 8.
As shown in FIGS. 11E and 11F, the locked convex surface portion 27 formed on the latch rod 26 bends in strong contact with the lower end surface of the locking member 19 and generates a large frictional locking force. It is configured. As shown in FIG. 11F, the locked convex surface portion 27 of the present embodiment also has a slight angle when the center line of the handle 8 is in a vertical state. It is configured such that it tilts forward by θ and stops at a position slightly beyond the point of occurrence of the maximum frictional force (in this embodiment, by an angle θ). That is, as in the fourth embodiment, a safety measure technique is adopted in which the rotation dead point is felt as a response.

The effect of the handle type connection structure according to the fifth embodiment is the same as that of the first to fourth embodiments. In particular, the handle 8 is in the downward position in FIG. 11E, F (position where the latch rod 26 cannot be rotated), and the horizontal sideways hook portion 7 connects the front plate 2 and the left side plate 3. When the latch rod 26 rotates to the upper side as indicated by the arrow R to take a horizontal horizontal posture, the latching convex surface portion 27 of the latch rod 26 comes into strong contact with the lower end surface of the locking member 19 and generates a frictional force. The contact with the lower end surface of the locking member 19 is canceled from the state where the latch member 26 is in contact, and the original outer diameter surface (non-contact surface portion) of the latch bar 26 faces the lower end surface of the locking member 19 so that contact and friction occur. The force is eliminated (see FIGS. 11C and D).
At this time, the hook portion 7 is vertically vertical, and can be inserted into and removed from the elongated hole 3 c of the left side plate 3. In the case of the present embodiment, as a method of releasing the connection between the face plates 2 and 3 (or connection), in the case of this embodiment, in addition to the method of removing the left side plate 3 to the left in the same manner as in the above embodiment 4, The position of the side plate 3 is left as it is, and conversely, the hook 8 of the latch rod 26 is moved to the left by pulling the handle 8 in the horizontal and horizontal posture as it is as shown by the right arrow P in FIG. 11E. It is possible to perform an operation of pulling out from the long hole 3c of the side plate 3 and releasing the connection, or an operation of connection by the reverse procedure.
Note that the latch rod 26 used in the fifth embodiment is not limited to the configuration of the illustrated example in which the pieces 27 are overlapped, and extends along the axial direction of the latch rod 26 over the length range S of the moving stroke. Even if it forms in the synthetic | combination shape which provided at least 1 protrusion or the plurality of intermittently on the outer diameter surface, it can implement similarly.

FIGS. 12-14 is the handle | steering-wheel type connection apparatus which concerns on Example 6, Comprising: The state which connected the side plate 3 by making the handle | steering-wheel 8 into a downward attitude | position is shown. This handle type connecting device is different from the handle type connecting device 4 shown in the first to fifth embodiments in the means for providing the locking member. That is, the locking members 29, 39, and 49 according to FIGS. 12 to 14 are implemented by cutting a part of the web portion of the bearing member 5 inwardly at a substantially right angle. The latch rod 6 used in the sixth embodiment is implemented in a shape having the flat portion 6a and the large-diameter outer peripheral surface 6b for friction described in the first to third embodiments (see FIGS. 1 to 9) as an example. ing. The hook portion 7 at the tip of the latch bar 6 is formed by bending the tip of the latch bar 6 at a required angle.

That is, the locking member 29 according to FIG. 12 has a constant size because a part of the web portion (upper side portion) of the bearing member 5 formed in a downward U-shape contacts the large-diameter outer peripheral surface 6b for friction of the latch rod 6. It is configured as a cut-and-raised piece having a substantially rectangular parallelepiped shape that generates the frictional resistance. The cut-and-raised piece 29 is such that the bottom surface portion of the cut-and-raised piece 29 comes into strong contact with the large-diameter outer peripheral surface 6b for friction supported by the left and right vertical sides 5a and 5a of the bearing member 5. In addition, the web portion of the bearing member 5 is cut and raised, for example, by pressing, and is provided at a substantially central portion of the vertical side portions 5 a and 5 a of the bearing member 5. The latch rod 6 according to the illustrated example is configured such that when the handle 8 is in a downward hanging state, a flat portion 6a having a small rotation radius faces the front side with the front plate 2 as the back.

The locking member 39 shown in FIG. 13 has a certain amount of frictional resistance when a part of the web portion of the wide bearing member 5 formed in a lateral U shape comes into contact with the large-diameter outer peripheral surface 6b of the latch rod 6 for friction. Is formed as a cut-and-raised piece having a substantially rectangular parallelepiped shape. The cut-and-raised piece 39 is such that the front end surface portion of the cut-and-raised piece 39 is in strong contact with the large-diameter outer peripheral surface 6b for friction supported by the left and right vertical sides 5a and 5a of the bearing member 5. In addition, the web portion of the bearing member 5 is cut and raised, for example, by pressing, and is provided at a substantially central portion of the vertical side portions 5 a and 5 a of the bearing member 5. The latch rod 6 according to the illustrated example is configured in such a manner that when the handle 8 is in a downwardly hanging state, a flat portion 6a having a small turning radius faces the upper surface side.

14 has a certain amount of frictional resistance when a part of the web portion of the wide bearing member 5 formed in a lateral U-shape is in contact with the large-diameter outer peripheral surface 6b for friction of the latch rod 6. Is formed as a cut-and-raised piece having a substantially rectangular parallelepiped shape. The cut-and-raised piece 49 is such that the bottom portion of the cut-and-raised piece 49 comes into strong contact with the large-diameter outer peripheral surface 6b for friction of the latch rod 6 supported at both ends by the left and right vertical sides 5a and 5a of the bearing member 5. In addition, the web portion of the bearing member 5 is cut and raised, for example, by pressing, and is provided at a substantially central portion of the vertical side portions 5 a and 5 a of the bearing member 5. The latch rod 6 according to the illustrated example is configured such that when the handle 8 is in a downward hanging state, a flat portion 6a having a small rotation radius faces the front side with the front plate 2 as the back.

The wide bearing member 5 shown in FIGS. 13 and 14 is a laterally U-shaped bearing member 5 along the lower bottom surface of the square pipe-like upper frame 2a fixed to the upper edge of the front panel 2. The upper side is fixed by means such as welding.

Since the connection operation of the adjacent face plates 2 and 3 by the handle type connection device according to the sixth embodiment, the release operation, and the effects based on the operation are the same as those in the first to fifth embodiments, the description thereof is omitted.
The bottom surface portion or the front end surface portion of the locking member (29, 39, 49) shown in FIGS. 12 to 14, that is, the contact surface with the large-diameter outer peripheral surface 6b for friction of the latch rod 6 is basically flat. Is formed. However, the contact surface is not limited to a planar shape, and for example, rotation of the latch rod 6 is performed so that a necessary and sufficient frictional resistance can be generated by contact with the latch rod 6 (the large diameter outer peripheral surface 6b for friction). It is possible to carry out by forming it into a one-sided inclined surface with a slightly higher side to accept the sword, or forming it into an upward semicircular concave shape or a downward semicircular convex shape. In short, the form of the bottom surface portion or the front surface portion is determined in consideration of the balance with the friction locking effect exhibited by the friction with the latch rod 6.
The structure of the latch bar 6 of the handle type coupling device 4 shown in FIGS. 12 to 14 is not limited to this, and the structure of the fourth embodiment described with reference to FIG. 10 and the structure of the fifth embodiment described with reference to FIG. But it can be done in the same way.

Although the present invention has been described above based on the illustrated embodiment, the present invention is not limited to the configuration and operation of the embodiment, and changes and applications similar to design changes made by those skilled in the art as needed. I would like to remind you that this is a technical idea that covers the scope of
For example, although not shown, by combining the crank-shaped latch rod 16 according to FIG. 10 and the locking member 9 formed by bending the spring-like plate member according to FIGS. 1 to 7 into a substantially L shape. Further, it can be implemented by a handle type coupling structure in which the upper surface side or the lower surface side of the locking member 9 is in strong contact with the locked convex outer peripheral portion 16b of the latch bar 16 to generate a large frictional force.
Further, by combining the latch rod 26 according to FIG. 11 and the locking member 9 formed by bending the spring plate member according to FIGS. 1 to 7 into a substantially L shape, the upper surface side of the locking member 9 is combined. Alternatively, it may be implemented by a handle type coupling structure in which the lower surface side is in strong contact with the locked convex surface portion 27 of the latch bar 26 and generates a large frictional force.
Of course, the above-described variations can exhibit the same effects as those of the first to sixth embodiments.

DESCRIPTION OF SYMBOLS 1 Pallet stand 2 Front plate 3 Side plate 4 Handle type connection structure 5 Bearing material 6 Latch rod 7 Hook part 8 Handle 9 Locking member 2b Vertical frame 2c Through long hole 3a Vertical frame 3c Long hole 2a Upper frame 5a Vertical of bearing material Side portion 6a Flat portion 6b Large diameter outer peripheral surface for friction 9a Vertical surface portion of locking member 9b Horizontal surface portion of locking member
16 Latch bar
16a Non-contact concave outer periphery
16b Perimeter of the convex surface to be locked
19, 29, 39, 49 Locking member
26 Latch bar
27 Locked convex surface (piece)

Claims (8)

In the handle type connection structure of the assembly type box pallet that is assembled by connecting the front plate, the back plate and the left and right side plates so that they can be disassembled along the four sides of the pallet base having a rectangular plane.
The front plate or bearing material was placed into the back plate and the left and right side plates and the one surface plate in the upper corner portions intersecting, movable latch bar is the horizontal direction, is and attached to the rotary available-the latch A hook portion for hooking the opposing face plate is formed at the tip of the rod, and a handle for manually operating the latch rod is attached to the latch rod,
The handle is restrained the rotation of the latch bar to come to be directed downward, the locking member to allow movement in the horizontal direction is rotated a certain angle to the handle upward, set on the shaft receiving member or face plate And
The latch bar has at least a length range of movement along the locking member. The latch bar is constrained when the handle is turned downward, and the latch bar is movable when the handle is rotated upward by a certain angle. Consists of shafts with irregular cross-sections with different turning radii from the line,
In the vertical frame of the corner portion of the face plate, a through hole having a shape and a size that allows the hook portion to pass in a state where the handle is rotated upward to an angle at which the latch bar can move, is formed.
In the vertical frame of the mating face plate adjacent to the face plate to which the bearing material is fixed, the elongated hole through which the hook part can pass is aligned with the hook part when the handle is rotated to an angle at which the latch bar can be moved with the handle. Formed,
The latch rod is rotated to a movable angle by the handle and moved forward, the hook part at the tip is passed through the long hole of the vertical frame in the mating face plate, the handle is returned downward and the two face plates are connected. done, the same handle hook portion rotates upward the latch bar to an angle which is movable away is removed from the long hole solving binding faceplate mutual dismantling is performed, for accommodating a hook portion on the surface plate inside The assembly type box pallet has a handle-type connection structure, wherein the latch bar retracted to the position returns the handle to a downward state, is constrained to rotate by a locking member , and is positioned in a non-movable state. The assembly type box according to claim 1, wherein the locking member comprises a spring-like plate member that elastically contacts the outer surface of the latch bar to generate a frictional force having a certain size. Pallet handle connection structure. The locking member is formed by bending into a substantially L shape having a spring characteristic plate member and a vertical surface and the horizontal surface portion, the upper end of the vertical surface portion, fixed to the bearing member to the upper frame of the previous SL one surface plate The handle-type connection structure for an assembled box pallet according to claim 2 , wherein the handle-type connection structure is mounted and installed in such a manner that the horizontal surface portion is in contact with the upper surface side or the lower surface side of the latch bar. 2. The assembly type according to claim 1, wherein the locking member is made of a rigid rod-shaped or block-shaped material that contacts the outer surface of the latch rod to generate a certain amount of frictional force. Box-type pallet handle connection structure. The latch bar is made in the shaft member of a circular cross-section the locking member to its outer surface to generate a frictional force of a predetermined magnitude to come in contact, by solving the coupling faceplate cross from the forward position for connecting at least two of the face plate In the range of the length of the moving stroke to the retracted position for storing the hook part inside the face plate, a flat part for releasing the contact of the locking member or reducing the frictional force is formed over a certain rotation angle and the cross section is The handle type connecting structure for an assembled box pallet according to any one of claims 1 to 4, wherein the handle type connecting structure is formed in a kamaboko shape. The locking of the latch rod, perpendicular sectional shape and its axis of rotation and a large diameter outer peripheral surface for frictional radius of rotation for generating a frictional force of a predetermined magnitude locking member to come in contact, and conversely a small diameter outer surface of the small turning radius to reduce contact is released or frictional force between the members, each oval cross-sectional shape which is formed over a period of the rotation angle, Moshiku evenly sectional square cross-sectional shape, or irregular cross-sectional shape The handle-type connection structure for an assembly-type box pallet according to any one of claims 1 to 4, wherein the handle-type connection structure is composed of a shaft member. The latch rod has a crank shape whose eccentric shaft portion is a length range of a moving stroke from an advanced position where at least two face plates are connected to a position where the hook portions are retracted after releasing the coupling between the face plates. The convex outer peripheral portion of the eccentric shaft portion is in contact with the locking member to generate a frictional force having a certain size. The handle type connection structure of the assembly type box pallet described in 1. The latch rod has a length range of a moving stroke from an advanced position connecting at least two face plates to a position where the hook portion is retracted after releasing the coupling between the face plates, and the outer diameter surface of the latch rod The rod-shaped member is overlapped or formed into a composite shape in which at least one protrusion is provided on the outer diameter surface or a plurality of protrusions are intermittently provided along the axial direction of the latch rod. The handle-type connection structure of the assembly-type box pallet described in any one of 1-4.

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