Plastic packaging box for saw blades

Abstract

The plastic packaging box comprises a bottom box and a box cover, one side of the box cover is hinged to the bottom box, the other side of the box cover is detachably connected with the bottom box through a buckle, a containing groove is formed in the upper end of the bottom box, a positioning column is arranged in the center of the containing groove in a protruding mode, and three clamping blocks are evenly distributed in the containing groove around the center of the containing groove. An inner cavity located below the containing groove is formed in the bottom box, the lower end of the clamping block extends into the inner cavity to be fixedly connected with a hinge block, a driving block right opposite to the center of the containing groove is arranged in the inner cavity, the three hinge blocks are hinged to the driving block through connecting rods respectively, and a threaded hole is formed in the center of the driving block. And a rotating hole communicated with the inner cavity is formed in the lower end of the bottom box, a bolt matched with the threaded hole is arranged in the rotating hole in a penetrating mode, the bolt is rotationally installed in the rotating hole, the three clamping blocks are driven by the bolt to synchronously move to clamp the saw blade, and therefore the saw blade is prevented from rotating and shaking in the containing groove, and the packaging safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of tool boxes, in particular to a plastic packaging box for saw blades. Background Art

[0002] As a grinding or cutting tool, the saw blade has a sharp edge or surface, but the traditional packaging method (paper box) is not designed according to the shape of the saw blade itself, which can easily cause the saw blade to shake inside, thereby damaging the packaging.

[0003] In order to solve the above problems, the prior art patent publication number "CN204056601 U" states in "A Saw Blade Packaging Box": It includes a pivotally connected box bottom and a box cover. The key is that a cylindrical protrusion is provided in the center of the box bottom, and the box cover is provided with a limiting recess that matches the outer shape of the saw blade; the peripheries of the box cover and the box bottom are provided with grooves and convex strips that match each other. When packaging, the mounting hole of the saw blade is inserted into the cylindrical protrusion of the box bottom, and then the box cover and the box bottom are buckled. The grooves and convex strips provided on the peripheries of the box cover and the box bottom can make the box cover and the box bottom tightly combined to prevent the saw blade from falling out. The cylindrical protrusion of the box bottom and the limiting recess of the box cover can both limit the saw blade. Therefore, even if the box bottom is opened upward to open the packaging box and the mounting hole of the saw blade is separated from the cylindrical protrusion, the limiting recess of the box cover can prevent the saw blade from slipping, thereby improving the safety factor.

[0004] However, in the above-mentioned patent, the saw blade is positioned only by the cylindrical protrusion, which can only ensure that the saw blade does not shake along the radial direction of the cylindrical protrusion, but the saw blade will still shake along the length direction of the cylindrical protrusion and rotate on the cylindrical protrusion; and the box cover is buckled on the box bottom by the convex strips and the grooves. When opening the box, it is necessary to forcefully pry the box cover and the box bottom apart, and the box bottom and the bottom cover will suddenly collapse, thereby causing the box bottom to vibrate, which can easily cause the saw blade to fall off the cylindrical protrusion and fall out of the box bottom. Utility Model Content

[0005] In order to solve the above-mentioned deficiencies in the prior art, the utility model provides a plastic packaging box for saw blades.

[0006] In order to achieve the above technical effects, the utility model adopts the following scheme:

[0007] A plastic packaging box for a saw blade, comprising a bottom box and a box cover. One side of the box cover is hinged to the bottom box, and the other side of the box cover is detachably connected to the bottom box through a buckle. An upper end of the bottom box is provided with a placement groove, a positioning post protrudes from a center of the placement groove, and three clamping blocks are arranged in a circumferential array around the center of the placement groove in the placement groove. The three clamping blocks are all movably arranged towards the center of the placement groove. An inner cavity is arranged in the bottom box below the placement groove. A lower end of the clamping block extends into the inner cavity and is fixedly connected with a hinge block. A driving block is arranged in the inner cavity opposite to the center of the placement groove. The three hinge blocks are respectively hinged to the driving block through a connecting rod. A threaded hole is opened at a center of the driving block. A rotation hole communicating with the inner cavity is opened at a lower end of the bottom box. A bolt matching the threaded hole is arranged through the rotation hole. The bolt is rotatably installed in the rotation hole, and the bolt is screwed with the threaded hole.

[0008] In a preferred technical solution, an upward groove is opened at a lower end of the bottom box, a lower end of the rotation hole is connected to the groove, and a screw head portion of the bolt is located in the groove.

[0009] In a preferred technical solution, a rubber plug is embedded at the groove at a lower end of the bottom box.

[0010] In a preferred technical solution, a bearing structure is fixedly installed in the rotation hole, and the bolt is rotatably installed in the rotation hole through the bearing structure.

[0011] In a preferred technical solution, the clamping block is installed in the placement groove through a strip-shaped sliding hole to slide. A lower end of the strip-shaped sliding hole communicates with the inner cavity. A length direction of the strip-shaped sliding hole is arranged towards the center of the placement groove. A lower end of the clamping block is fixedly connected with a slider that is matched and slidably arranged in the strip-shaped sliding hole. A lower end of the slider is fixedly connected with the hinge block. A limiting block is fixedly arranged on a side of the clamping block away from the center of the placement groove. Widths of the limiting block and the hinge block are both greater than a width of the strip-shaped sliding hole. A lower end of the limiting block slides while adhering to a bottom of the placement groove, and an upper end of the hinge block slides while adhering to an upper end of the inner cavity.

[0012] In a preferred technical solution, a layer of silica gel layer is fixedly arranged on a side of the clamping block facing the center of the placement groove.

[0013] In a preferred technical solution, a plurality of silica gel pads are movably placed in the placement groove, and a center hole for the positioning post to pass through is opened at a center of the silica gel pad.

[0014] Compared with the prior art, the beneficial effects are:

[0015] The structure of the utility model is simple and convenient to use. By adjusting the bolt, three clamping blocks are driven to move synchronously to clamp the saw blade located in the placement groove, so as to prevent the saw blade from rotating and shaking in the placement groove, ensuring the safety of packaging. When the saw blade needs to be taken out, the box cover is opened, and the bolt is adjusted to move the clamping blocks away from the center of the placement groove, so that the three clamping blocks are separated from the saw blade, facilitating the direct removal of the saw blade. This way can avoid the saw blade detaching from the placement groove before it is taken out. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic cross-sectional view of the utility model;

[0017] Figure 2 is a top view schematic of the bottom box in the utility model.

[0018] Reference numerals: 1, bottom box; 2, box cover; 3, buckle; 4, placement groove; 5, inner cavity; 6, positioning post; 7, clamping block; 8, strip-shaped sliding hole; 9, slider; 10, limiting block; 11, hinge block; 12, connecting rod; 13, driving block; 14, bolt; 15, groove; 16, rubber plug; 17, silica gel pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0020] A plastic packaging box for a saw blade includes a bottom box 1 and a box cover 2. One side of the box cover 2 is hinged to the bottom box 1, and the other side of the box cover 2 is detachably connected to the bottom box 1 through a buckle 3. The box cover 2 can rotate on the bottom box 1 to open and close. After the box cover 2 and the bottom box 1 are closed, they are detachably fixedly connected through the buckle 3, and the buckle 3 adopts the prior art;

[0021] The upper end of the bottom box 1 is provided with a placement groove 4. A positioning post 6 protrudes from the center of the placement groove 4, and the positioning post 6 matches the opening in the center of the saw blade. Three clamping blocks 7 are arranged around the center of the placement groove 4 in a circumferential array in the placement groove 4. The three clamping blocks 7 are all arranged to move towards the center of the placement groove 4. An inner cavity 5 is provided in the bottom box 1 below the placement groove 4. The lower end of the clamping block 7 extends into the inner cavity 5 and is fixedly connected with a hinge block 11. A driving block 13 is provided in the inner cavity 5 opposite to the center of the placement groove 4. The three hinge blocks 11 are respectively hinged to the driving block 13 through a connecting rod 12. The two ends of the connecting rod 12 are respectively hinged to the hinge block 11 and the driving block 13, and the three connecting rods 12 are arranged in a circumferential array around the center of the placement groove 4;

[0022] A threaded hole is formed in the center of the driving block 13. A rotating hole communicating with the inner cavity 5 is formed at the lower end of the bottom box 1. A bolt 14 matching the threaded hole passes through the rotating hole. The bolt 14 is rotatably installed in the rotating hole and is screwed with the threaded hole.

[0023] Place the saw blade in the placement groove 4, and the opening in the center of the saw blade is sleeved on the positioning post 6. Rotate the bolt 14 to make the driving block 13 screwed with the bolt 14 move downward, so as to drive the hinge block 11 to move towards the center of the placement groove 4 through the connecting rod 12, thereby driving the clamping block 7 to move in the placement groove 4. The three clamping blocks 7 move synchronously from three directions to jointly clamp the saw blade. Then close the bottom box 1 and the box cover 2, and fix the box cover 2 and the bottom box 1 through the buckle 3.

[0024] In this way, by adjusting the bolt 14, the three clamping blocks 7 are driven to move synchronously to clamp the saw blade located in the placement groove 4, so as to prevent the saw blade from rotating and shaking in the placement groove 4, ensuring the safety of packaging; when the saw blade needs to be taken out, open the box cover 2, adjust the bolt 14 to make the clamping block 7 move away from the center of the placement groove 4, so that the three clamping blocks 7 are separated from the saw blade, facilitating the direct removal of the saw blade. This method can prevent the saw blade from detaching from the placement groove 4 before the saw blade is taken out.

[0025] In a preferred technical solution, an upward groove 15 is formed at the lower end of the bottom box 1. The lower end of the rotating hole is connected to the groove 15, and the head part of the bolt 14 is located in the groove 15.

[0026] In a preferred technical solution, a rubber plug 16 is provided at the lower end of the bottom box 1 and is embedded in the groove 15.

[0027] The groove 15 is blocked by the rubber plug 16 to prevent accidental contact with the bolt 14 during the transportation and handling of the plastic packaging box, resulting in the rotation of the bolt 14 and thus the movement of the clamping block 7 to loosen the saw blade; when the bolt 14 needs to be adjusted, directly pry open the rubber plug 16.

[0028] In a preferred technical solution, a bearing structure is fixedly installed in the rotating hole, and the bolt 14 is rotatably installed in the rotating hole through the bearing structure.

[0029] Preferred technical solution: The clamping block 7 is installed in the placement groove 4 through a strip-shaped sliding hole 8 for sliding. The lower end of the strip-shaped sliding hole 8 communicates with the inner cavity 5. The length direction of the strip-shaped sliding hole 8 is set towards the center of the placement groove 4. The lower end of the clamping block 7 is fixedly connected with a slider 9 that matches and slides in the strip-shaped sliding hole 8. The lower end of the slider 9 is fixedly connected with a hinge block 11. A limiting block 10 is fixedly arranged on the side of the clamping block 7 away from the center of the placement groove 4. The widths of the limiting block 10 and the hinge block 11 are both greater than the width of the strip-shaped sliding hole 8. The lower end of the limiting block 10 slides while adhering to the bottom of the placement groove 4, and the upper end of the hinge block 11 slides while adhering to the upper end of the inner cavity 5.

[0030] Driven by the slider 9, the clamping block 7 moves along the strip-shaped sliding hole 8, and jointly clamps the bottom of the placement groove 4 through the limiting block 10 above the strip-shaped sliding hole 8 and the hinge block 11 below the strip-shaped sliding hole 8, thereby stabilizing the clamping block 7 in the placement groove 4.

[0031] Preferred technical solution: A layer of silica gel layer is fixedly arranged on the side of the clamping block 7 facing the center of the placement groove 4.

[0032] The saw blade can be clamped more firmly through the silica gel layer.

[0033] Preferred technical solution: A number of silica gel pads 17 are movably placed in the placement groove 4, and a central hole for the positioning column 6 to pass through is opened in the center of the silica gel pad 17.

[0034] After the saw blade is placed in the placement groove 4, a number of silica gel pads 17 are placed above the saw blade to fill the gap between the saw blade and the box cover 2, further preventing the saw blade from shaking.

[0035] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0037] Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

Claims

1. A plastic packaging box for saw blades, characterized in that: The invention comprises a bottom box (1) and a box cover (2), one side of the box cover (2) is hinged to the bottom box (1), and the other side of the box cover (2) is detachably connected to the bottom box (1) via a buckle (3); a placement groove (4) is provided at the upper end of the bottom box (1); a positioning column (6) is provided protruding from the center of the placement groove (4); three clamping blocks (7) are arranged in a circular array around the center of the placement groove (4); the three clamping blocks (7) are all arranged to move toward the center of the placement groove (4); an inner cavity (5) is provided in the bottom box (1) and is located below the placement groove (4); The lower end of the clamping block (7) extends into the inner cavity (5) and is fixedly connected with a hinge block (11). A driving block (13) is provided in the inner cavity (5) and is directly opposite to the center of the placement groove (4). The three hinge blocks (11) are respectively hinged to the driving block (13) through a connecting rod (12). A threaded hole is provided in the center of the driving block (13). The lower end of the base box (1) is provided with a rotating hole connected to the inner cavity (5). A bolt (14) matching the threaded hole passes through the rotating hole. The bolt (14) is rotatably installed in the rotating hole, and the bolt (14) is threadedly connected to the threaded hole.

2. The plastic packaging box for saw blades according to claim 1, characterized in that: The lower end of the bottom box (1) is provided with an upwardly facing groove (15), the lower end of the rotating hole is connected to the groove (15), and the screw head portion of the bolt (14) is located in the groove (15).

3. The plastic packaging box for saw blades according to claim 2, characterized in that: The lower end of the bottom box (1) is provided with a rubber plug (16) embedded in the groove (15).

4. The plastic packaging box for saw blades according to claim 1, characterized in that: A bearing structure is fixedly installed in the rotating hole, and the bolt (14) is rotatably installed in the rotating hole through the bearing structure.

5. The plastic packaging box for saw blades according to claim 1, characterized in that: The clamping block (7) is installed in the placement groove (4) through the strip sliding hole (8) to slide, the lower end of the strip sliding hole (8) is connected to the inner cavity (5), the length direction of the strip sliding hole (8) is arranged toward the center of the placement groove (4), the lower end of the clamping block (7) is fixedly connected to a sliding block (9) slidingly arranged in the strip sliding hole (8), the lower end of the sliding block (9) is fixedly connected to a hinge block (11), a limit block (10) is fixedly provided on the side of the clamping block (7) away from the center of the placement groove (4), the width of the limit block (10) and the hinge block (11) are both greater than the width of the strip sliding hole (8), the lower end of the limit block (10) is attached to the bottom of the placement groove (4) to slide, and the upper end of the hinge block (11) is attached to the upper end of the inner cavity (5) to slide.

6. The plastic packaging box for saw blades according to claim 1, characterized in that: A layer of silica gel is fixedly provided on one side of the clamping block (7) facing the center of the placement groove (4).

7. The plastic packaging box for saw blades according to claim 1, characterized in that: A plurality of silicone pads (17) are movably placed in the placement groove (4), and a central hole for the positioning column (6) to pass through is opened in the center of the silicone pad (17).

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