A cargo box sliding door with easily replaceable casters

Abstract

This utility model discloses a cargo box sliding door with easily replaceable pulleys, relating to the field of sliding door technology. The key technical points are: it includes a sliding door body and pulley components. The bottom of the sliding door body has several mounting grooves for installing the pulley components. Each mounting groove includes a first end face, a second end face, and a top surface that is sloped upwards. The height of the first end face is less than the height of the second end face. The pulley component includes two side plates, with the pulley body rotatably connected between the two side plates. A top plate parallel to the top surface is provided on the top of the two side plates. The pulley component and the sliding door body are detachably fixedly connected by a positioning component. Space is provided between the second end face and the pulley component for the pulley component to move. The purpose of this utility model is to provide a cargo box sliding door with easily replaceable pulleys.

Description

Technical Field

[0001] This utility model relates to the field of sliding door technology, and more specifically, to a cargo box sliding door with easily replaceable pulleys. Background Technology

[0002] A cargo box is the body of a truck used to carry goods. A fully enclosed cargo box can better protect the goods from wind, sun, rain and snow. The existing fully enclosed cargo boxes usually open with double doors or a single side door.

[0003] In existing technology, pulleys are usually installed at the bottom of the sliding door to facilitate its sliding and control the opening and closing of the cargo box. However, after a long period of use, if the pulleys fail, since the pulleys are connected to the guide rails, the entire sliding door needs to be disassembled before the pulleys can be repaired or replaced, which is quite inconvenient.

[0004] Therefore, a new technical solution is urgently needed to solve the above-mentioned technical problems. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a cargo box sliding door that is easy to replace the pulleys.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a cargo box sliding door with easy-to-replace pulleys, comprising a sliding door body and pulley components. The bottom of the sliding door body is provided with several mounting grooves for mounting the pulley components. The mounting grooves include a first end face, a second end face, and a top surface that is inclined at the top. The height of the first end face is less than the height of the second end face. The pulley components include two side plates, and the pulley body is rotatably connected between the two side plates. A top plate parallel to the top surface is provided on the top of the two side plates. The pulley components and the sliding door body are detachably and fixedly connected by a positioning component. The second end face and the pulley components have space for the movement of the pulley components.

[0007] The present invention is further configured such that: a first end plate is provided between the ends of the two side plates facing the first end face, a positioning strip is provided on the surface of the first end plate, a positioning groove for the positioning groove to be inserted is provided on the first end face, a through groove is provided between the sliding door body and the positioning strip, a bolt is provided in the through groove, and a nut is provided at the end of the bolt extending out of the through groove.

[0008] The present invention is further configured such that the positioning strip and the positioning groove are inclined, and the inclination angle is parallel to the inclination angle of the top surface.

[0009] The present invention is further configured such that: a second end plate is provided between the ends of the two side plates facing the second end face, a horizontal fixing plate is provided on the surface of the second end plate, a vertical positioning rod is passed through and slidably connected to the fixing plate, and a slot for inserting the positioning rod is provided on the top surface.

[0010] The present invention is further configured such that: a stop plate is fixedly connected to the bottom end of the positioning rod, and a tension spring is sleeved between the stop plate and the fixing plate on the positioning rod, and the two ends of the tension spring are fixedly connected to the stop plate and the fixing plate.

[0011] The present invention is further configured such that: three or more pulley components are provided, and they are evenly distributed along the length direction of the sliding door body at the bottom of the sliding door body.

[0012] This utility model has the following beneficial effects: When one of the pulley components malfunctions, the sliding component is disassembled from the sliding door body by means of the positioning component. The pulley component is then moved toward the second end face and upward along the top surface, so that the pulley body is separated from the guide rail. The pulley component can then be taken out from one side of the mounting groove. A new pulley component is then installed into the mounting groove from the side of the mounting groove near the second end face. It is then moved toward the first end face and slid downward along the top surface until it finally abuts against the first end face and is installed in place. The positioning component is then used to fix it, thus making it easy to replace a single pulley component. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of this embodiment;

[0014] Figure 2 This is a schematic diagram of the sliding door body in this embodiment;

[0015] Figure 3 This is an example. Figure 2 A magnified view of part A in the middle;

[0016] Figure 4 This is a three-dimensional structural diagram of the pulley component in this embodiment;

[0017] Figure 5 This is another three-dimensional structural diagram of the pulley component in this embodiment.

[0018] Figure descriptions: 1. Sliding door body; 2. Pulley assembly; 3. Mounting groove; 4. First end face; 5. Second end face; 6. Top surface; 7. Side plate; 8. Pulley body; 9. Top plate; 10. First end plate; 11. Positioning strip; 12. Positioning groove; 13. Through groove; 14. Bolt; 15. Nut; 16. Second end plate; 17. Fixing plate; 18. Positioning rod; 19. Slot; 20. Abutment plate; 21. Tension spring. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.

[0021] As shown in the figure, a cargo box sliding door with easily replaceable pulleys includes a sliding door body 1 and pulley components 2. The bottom of the sliding door body 1 has three or more mounting slots 3 for mounting the pulley components 2, evenly distributed along the length of the sliding door body. In this embodiment, four mounting slots 3 are provided, ensuring the sliding door body 1 remains stable when replacing one of the pulley components 2. Each mounting slot 3 includes a first end face 4, a second end face 5, and a top surface 6 with an angled top. The height of the first end face 4 is less than the height of the second end face 5. The pulley component 2 includes two side plates 7, with a pulley body 8 rotatably connected between the two side plates 7. A top plate 9 parallel to the top surface 6 is provided on the top of the two side plates 7. The pulley component 2 and the sliding door body 1 are detachably fixedly connected by a positioning assembly. The first end face 4 abuts against the pulley component 2, and space is left between the second end face 5 and the pulley component 2 for movement.

[0022] When one of the pulley components 2 malfunctions, the sliding component is disassembled from the sliding door body 1 by using the positioning component. The pulley component 2 is then moved toward the second end face 5 and upward along the top surface 6, causing the pulley body 8 to separate from the guide rail. The pulley component 2 can then be removed from one side of the mounting groove 3. A new pulley component 2 is then inserted into the mounting groove 3 from the side of the mounting groove 3 near the second end face 5. It is then moved toward the first end face 4 and slid downward along the top surface 6 until it finally comes into contact with the first end face 4 and is installed in place. The positioning component is then used to fix it in place, thus making it easy to replace a single pulley component 2.

[0023] A first end plate 10 is provided between the ends of the two side plates 7 facing the first end face 4. A positioning strip 11 is provided on the surface of the first end plate 10. A positioning groove 12 for the positioning groove to be inserted is provided on the first end face 4. Two through grooves 13 are provided between the sliding door body 1 and the positioning strip 11. A bolt 14 is provided in the through groove 13, and a nut 15 is provided at the end of the bolt 14 that extends out of the through groove 13. The positioning strip 11 and the positioning groove 12 are inclined, and the inclination angle is parallel to the inclination angle of the top surface 6.

[0024] The pulley component 2 can be easily fixed and disassembled by bolts 14 and nuts 15, and the stability of the connection between the pulley component 2 and the sliding door body 1 is ensured by the inclined positioning strip 11.

[0025] A second end plate 16 is provided between the ends of the two side plates 7 facing the second end face 5. A horizontal fixing plate 17 is provided on the surface of the second end plate 16. A vertical positioning rod 18 is passed through and slidably connected to the fixing plate 17. A slot 19 is provided on the top surface 6 for the positioning rod 18 to be inserted. An abutment plate 20 is fixedly connected to the bottom end of the positioning rod 18. A tension spring 21 is sleeved between the positioning rod 18 and the abutment plate 20 and the fixing plate 17. The two ends of the tension spring 21 are fixedly connected to the abutment plate 20 and the fixing plate 17.

[0026] Under the action of spring tension, the positioning rod 18 can be stably inserted into the slot 19, so as to further improve the stability of the connection between the pulley 2 and the sliding door body 1.

[0027] When it is necessary to disassemble the pulley component 2, after removing the bolts 14 and nuts 15, pull down the positioning rod 18 to separate it from the slot 19, move the pulley component 2 toward the second end face 5, and under the action of the positioning strip 11, move the pulley component 2 upward along the top surface 6. When the positioning strip 11 is completely away from the positioning groove 12, the pulley component 2 can be taken out from the mounting groove 3.

[0028] The specific embodiments are merely explanations of this utility model and are not intended to limit it. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this utility model.

Claims

1. A cargo box tailgate that facilitates replacement of a pulley, the cargo box tailgate comprising: The sliding door body (1) and the pulley assembly (2) are provided. The bottom of the sliding door body (1) is provided with several mounting grooves (3) for mounting the pulley assembly (2). The mounting groove (3) includes a first end face (4), a second end face (5) and a top surface (6) located at the top and set at an angle. The height of the first end face (4) is less than the height of the second end face (5). The pulley assembly (2) includes two side plates (7). The pulley body (8) is rotatably connected between the two side plates (7). The top of the two side plates (7) is provided with a top plate (9) parallel to the top surface (6). The pulley assembly (2) and the sliding door body (1) are detachably and fixedly connected by a positioning component. There is space between the second end face (5) and the pulley assembly (2) for the pulley assembly (2) to move.

2. The cargo box tailgate with a replaceable pulley of claim 1, wherein: A first end plate (10) is provided between the ends of the two side plates (7) facing the first end face (4). A positioning strip (11) is provided on the surface of the first end plate (10). A positioning groove (12) for the positioning groove to be inserted is provided on the first end face (4). A through groove (13) is provided between the sliding door body (1) and the positioning strip (11). A bolt (14) is provided in the through groove (13), and a nut (15) is provided at the end of the bolt that extends out of the through groove (13).

3. A cargo box sliding door with easily replaceable pulleys according to claim 2, characterized in that: The positioning strip (11) and the positioning groove (12) are inclined, and their inclination angle is parallel to the inclination angle of the top surface (6).

4. A cargo box sliding door with easily replaceable pulleys according to claim 3, characterized in that: A second end plate (16) is provided between the ends of the two side plates (7) facing the second end face (5). A horizontal fixing plate (17) is provided on the surface of the second end plate (16). A vertical positioning rod (18) is passed through and slidably connected to the fixing plate (17). A slot (19) for the positioning rod (18) to be inserted is provided on the top surface (6).

5. A cargo box sliding door with easily replaceable pulleys according to claim 4, characterized in that: The bottom end of the positioning rod (18) is fixedly connected to the abutment plate (20), and the positioning rod (18) is fitted with a tension spring (21) between the abutment plate and the fixing plate (17). The two ends of the tension spring (21) are fixedly connected to the abutment plate (20) and the fixing plate (17).

6. A cargo box sliding door with easily replaceable pulleys according to claim 1, characterized in that: The pulley component (2) is provided in three or more parts and is evenly distributed at the bottom of the sliding door body (1) along the length direction of the sliding door body (1).

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