JP5759314B2 - Fixing bracket for load collapse prevention belt - Google Patents

Description

  The present invention relates to a metal fitting for fixing a load collapse prevention belt to a rail provided on a side wall of a load carrier such as a truck.

  As shown in FIG. 9, as a load collapse prevention means in a transport vehicle T such as a truck, rails R are attached to both walls of a cargo compartment C, and a cargo tightening belt B is hung around the rails R. The rail R is formed by forming a plurality of vertically long engagement slots S on a metal plate P made of aluminum or the like that is long in the front-rear direction at equal intervals. M is attached. Then, after fixing the fixing metal M to an appropriate engagement slot S, the belt B is tensioned by the loader G provided in the middle of the belt B, thereby restricting the movement of the load L during traveling. Is.

  As shown in FIG. 10, a conventional general fixing bracket 10 is formed by bending a metal plate into a U-shape to form a mounting portion 11 for an engagement slot S of a rail R, and a belt B on the opposite side thereof. The attachment part 12 is formed (Patent Document 1 etc.). Thus, since the conventional fixing bracket 10 has the belt B attached in the direction perpendicular to the rail R, as shown in FIG. In such a case, a tensile load is applied to the belt B in a direction parallel to the rail R, and this causes the fixing bracket 10 to be tilted, so that the fixing bracket and the rail are easily deformed by the lever principle. There was a problem.

  In order to prevent this, there has been proposed a fixing bracket in which two mounting portions to the engagement slot are provided in parallel (Patent Document 2). Since this fixing bracket is provided with two mounting portions in parallel at the same interval as the engagement slot along the length direction of the rail, the tensile load acting on the fixing bracket is distributed to each mounting portion, Deformation can be prevented by avoiding stress concentration on the rail.

Japanese Utility Model Publication No.59-105536 Japanese Patent No. 3626885

  However, since the fixture of Patent Document 2 is provided with a plurality of mounting portions, it costs a lot to mold. Further, since it is necessary to adjust the interval between the mounting portions to the engagement slots of the rail, precise molding is required, and even a little difference between the engagement slots cannot be used for the rail.

  In addition, each mounting part is not a single metal plate that is continuously bent into a U-shape, but two metal plates that are bent into a U-shape each having a free end. Since the other ends of the two are connected to each other (FIG. 2 of Patent Document 2), the load acting on each mounting portion is substantially supported by one metal plate, and two conventional mounting portions are not necessarily provided. The load capacity of the minute was not obtained. That is, since the strength of each mounting portion is smaller than that of a conventional fixing bracket, there is a possibility that the mounting portion is deformed sequentially from the mounting portion closer to the belt. If the mounting portion is deformed even on one side, the distance from the other mounting portion is also changed, so that the fixing bracket cannot be used for the same rail.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a fixing member for a load collapse prevention belt having a high strength against a tensile load parallel to the rail while having a simple configuration. That is.

  In order to achieve the above-described object, the present invention provides a fixing bracket that is attached to an end portion of a load-clamping belt and is detachably mounted in an engagement slot of a rail provided on a side wall of a load-carrying vehicle. And a horizontal plate portion extending to the left and right, and upper and lower end portions of both side plates of the concave portion, respectively. And a metal reinforcing plate joined to a surface opposite to the mounting portion of the left and right horizontal plate portions, the left and right sides of the horizontal plate portion. The means for attaching the load-carrying belt in parallel with the rail through the metal reinforcing plate was used. In the present invention, the “center portion of the metal plate” indicating the position of the concave portion is a concept including both the complete center and the vicinity thereof. In other words, it includes a configuration in which the concave strip portion is located offset from the complete center of the metal plate. In this case, the left and right horizontal plate portions have different lengths. It is easy to secure the mounting allowance.

  In the fixing bracket of the present invention, since the belt is attached to the horizontal plate portion of the bracket main body in parallel with the rail, even if a tensile load is applied in the same direction, the load applied to the mounting portion is more than that of a conventional general fixing bracket. Is also reduced. Moreover, since the horizontal plate portion has a two-layer structure with metal reinforcing plates, high strength is realized. Furthermore, since the concave strip portion of the mounting portion is formed by bending a single metal plate into a U shape, the strength is greater than that of the single mounting portion in the fixing bracket of Patent Document 2.

  The horizontal plate portion may be formed at a position where the load-carrying belt attached to the left or right side of the metal plate is not in contact with the rail when the metal fitting is attached to the engagement slot. It is preferable that the clearance between them is as small as possible, and it is most preferable that the clearance be the minimum necessary according to the thickness of the belt and the dimensions of the mounting end. With this means, the height from the notch of the mounting portion to the horizontal plate portion, that is, the protruding amount of the mounting portion from the horizontal plate portion can be reduced, and the bending strength of the mounting portion with respect to the tensile load can be increased.

  On the other hand, a stopper for elastically holding one of the upper and lower edges of the engaging slot locked in the notch with the bottom of the concave portion is provided in the concave portion of the mounting portion so that the fixing bracket can be fixed. Prepared drop-out can be prevented.

  In addition, the notch on the side that is elastically clamped by the stopper extends the bottom side to form the jaw, thereby increasing the engagement depth of the engagement slot and also increasing the clamping range with the stopper. Therefore, the fixing state of the fixing bracket with respect to the engaging slot can be held more firmly.

  If the notch on the side that is elastically clamped by the stopper is a notch formed in the upper end of the recess, the weight of the fixing bracket will act on the notch on the lower end, so that the own weight is applied to the stopper. Inadvertent release of the stopper can be avoided without acting.

  According to the present invention, the horizontal plate part is integrally provided on the left and right of the upper edge of the mounting part having a U-shaped cross section, and is reinforced by the metal reinforcing plate, and then the load-clamping belt extends along the horizontal plate part. Since it is mounted in parallel with the rail, even when a tensile load parallel to the rail acts on the tightening belt, the mounting portion does not fall down and deformation is prevented. In addition, the metal fitting body is molded by bending a single metal plate, so it can be molded at low cost, and it has a simple structure that combines this with a metal reinforcing plate, but with a tensile load parallel to the rail. High resistance to

The perspective view of the fixture which concerns on one Embodiment of this invention. Same exploded perspective view Same as above, exploded plan view Same side view Same side sectional view The perspective view of the coil spring of the stopper Same mounting process diagram A sectional view taken along the line AA in FIG. Rear view explanatory diagram showing how the packing belt is used A perspective view showing a conventional general fixing bracket Plan view explanatory drawing which shows the use aspect which spanned the packing belt in the U-shape

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIGS. 1 and 2 are perspective views showing a completed state and a disassembled state of a fixing metal fitting according to an embodiment of the present invention, respectively, and are vertically long mounted to a vertically long engaging slot S of a rail R. FIG. A mounting body 1 having a U-shaped mounting section 1, forming horizontal plate portions 2 and 3 parallel to the rail R on the left and right from the upper edge thereof, and a metal plate body 4 having a substantially T shape in plan view, and a horizontal plate The metal reinforcement board 5 joined to the surface opposite to the mounting part 1 of the parts 2 * 3 is provided. One horizontal plate portion 2 (on the left side in the drawing) of the metal fitting body 4 is longer than the other horizontal plate portion 3, and the end portion of the closing belt B is attached to the tip side thereof.

  As shown in FIG. 3, the mounting bracket 1 and the left and right horizontal plate portions 2 and 3 are integrally provided by bending a single metal plate or the like. The metal reinforcing plate 5 is joined to the mounting portion of the load-carrying belt B so as to have a strong structure of two metal plates.

  The mounting portion 1 has notches 6 and 7 that are respectively engaged with the upper and lower edges of the engagement slot S at the upper and lower ends of the bottomed concave strip portion 1a that is formed in a U-shaped cross section over the entire width in the middle of the metal plate. And a stopper 8 is rotatably provided in the recess 1a. In this embodiment, the upper and lower cutouts 6 and 7 have different shapes as shown in FIG. That is, the upper notch 6 has a larger opening and deeper than the lower notch 7. The bottom side of the upper notch 6 extends upward to form a jaw 6a.

  The stopper 8 is pivotally supported by a pin 9 between both side plates 1c and 1d rising vertically from the bottom portion 1b of the mounting portion 1, and one end of the stopper 8 projects from above the mounting portion 1 as a lever portion 8a. As shown well in FIG. 5, the stopper 8 is urged by a coil spring 10 provided around the pin 9 so that the lever portion 8 a comes into close contact with the bottom portion 1 b of the mounting portion 1 in the original posture. As shown in FIG. 6, the coil spring 10 is formed by processing a single spring wire and forming a pair of normal coil springs via a horizontal portion 10a. By supporting the shaft in a state of being hooked on the end, the open end 10b comes into contact with the bottom 1b of the mounting portion 1 and exhibits the urging force.

  One of the horizontal plate portions 2 and 3 of the metal fitting body 4 (on the left side in the drawing) is longer than the other, and the vertically long mounting hole 2a for attaching the end portion of the packing belt to the tip side of the longer horizontal plate portion 2. Is installed. In addition, an insertion hole 11 a for a rivet 11 for joining the metal reinforcing plate 5 is provided at a symmetrical position between the horizontal plate portions 2 and 3.

  The metal reinforcing plate 5 is provided with an attachment hole 5a for the load fastening belt and an insertion hole 5b for the rivet 11 that communicate with the attachment hole 2a of the load fastening belt and the insertion hole 11a of the rivet 11. A slit 5c is provided at the upper edge to allow the lever 8a of the stopper 8 to swing in the release direction.

  Next, the usage method and effect of the fixing bracket having the above-described configuration will be described. In order to mount the fixing bracket in the engagement slot S of the rail R, as shown in FIG. 7, the lever 8 a is operated with a finger and the stopper 8 is rotated in the release direction against the urging force of the coil spring 10. First, the jaw 6a formed on the upper end of the mounting portion 1 is inserted into the engagement slot S. At this time, the fixing bracket is held obliquely with respect to the engagement slot S, the jaw 6a is inserted into the engagement slot S, and the upper edge of the engagement slot S is inserted into the upper notch 6 ((b) in the figure) The lower notch 7 is inserted into the engagement slot S by rotating the fixing bracket so as to be in a vertical posture with the insertion portion as a fulcrum. When the hand is released from the fixing bracket in this state, the fixing bracket falls due to its own weight, and the engaging slot S is inserted into the lower notch 7, and the lever 8a and the lever portion 8a The upper edge of the engagement slot S is clamped by the jaw 6a, and the mounting is completed ((c) in the figure).

  In this embodiment, since the holding portion of the stopper 8 is recessed in an L shape, the upper edge engaging portion of the engagement slot S is formed by the recess and the jaw 6a, and the fixing bracket is lifted after the mounting is completed. Even if such an external force is applied, the fixing bracket does not move upward, and an inadvertent dropout is prevented.

  As shown in FIG. 8, the fixing bracket that has been mounted as described above is attached in a direction in which the packing belt B is parallel to the rail R, and the clearance between the mounting portion (horizontal plate portion) and the rail R is also set. Therefore, even if a tensile load in the same direction acts on the belt B, a strong load resistance is exhibited, and deformation of the fixing bracket and the rail R is effectively prevented.

  Such load resistance increases as the clearance between the horizontal plate portion and the rail R becomes smaller. However, it is necessary to avoid the belt B from being worn by rubbing against the rail. Therefore, the clearance C between the notches 6 and 7 of the mounting portion and the left and right horizontal plate portions 2 and 3 is determined so that the packing belt B is not in contact with the rail R according to the thickness of the packing belt B or the dimensions of the mounting end. It is preferable to set the minimum value necessary for separation in the state.

  In addition, in the said embodiment, although the cargo tightening belt was attached to the left side of a fixing metal fitting, the other side may be sufficient. The shapes of the cutouts 6 and 7 and the stopper 8 of the mounting portion 1 are not limited to the above embodiment, and may be other shapes. The spring structure for urging the stopper 8 to the original posture is the same, as long as the mounting portion 1 is detachably mounted in the engagement slot S and can maintain the mounting state without accidentally dropping off. Conventionally known means may be employed.

DESCRIPTION OF SYMBOLS 1 Mounting part 2/3 Horizontal flat plate part 4 Metal body 5 Metal reinforcement board 6 Upper notch 7 Lower notch 8 Stopper

Claims (5)

A fixing bracket that is attached to an end portion of a loading belt and is detachably attached to an engagement slot of a rail provided on a side wall of a cargo compartment of a transport vehicle,
The central part of the metal plate has a U-shaped cross section corresponding to the width of the engagement slot across the entire width, and the horizontal plate extends from side to side, and the upper and lower ends of both side plates of the concave section A metal fitting body that forms a notch in each of the parts and serves as a mounting part for the engagement slot;
A metal reinforcing plate joined to a surface opposite to the mounting portion of the left and right horizontal plate portions,
A fixing metal fitting for a loading belt, wherein the loading belt is attached in parallel to the rail through the metal reinforcing plate on either the left or right side of the horizontal plate portion. 2. The fixing bracket for a loading belt according to claim 1, wherein the clamping belt has a minimum clearance required to be separated from the rail in a non-contact state between the notch of the mounting portion and the left and right horizontal plate portions. The load according to claim 1 or 2, wherein a stopper for elastically holding one of the upper and lower edges of the engaging slot locked in the notch with the bottom of the recess is provided in the recess of the mounting portion. Fastening belt fixing bracket. 4. A fixing bracket for a cargo tightening belt according to claim 3, wherein the cutout on the side elastically sandwiched by the stopper has a jaw portion extending on the bottom side. The fixing bracket for a cargo tightening belt according to claim 3 or 4, wherein the cutout on the side elastically sandwiched by the stopper is a cutout formed in the upper end portion of the concave strip portion.

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