Fastener and tool kit

Abstract

The utility model provides buckle and tool box, wherein the buckle includes buckle body, first rotation axis and second rotation axis, the buckle body is equipped with the limit lug along the first direction, the upper end of buckle body is equipped with the hook part, the hook part is used for with upper connecting piece buckling, first rotation axis is used for with lower connecting piece rotation connection, second rotation axis is equipped with eccentric shaft body along the first direction, the buckle body rotatablely is equipped on second rotation axis with eccentric shaft body and limit lug cooperation, effectively prevent the buckle to droop and interfere with lower layer buckle.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, and in particular to a fastener and toolbox. Background Technology

[0002] In the field of containers such as toolboxes and packaging boxes, a reliable closure between the lid and the box is a core element ensuring the basic functions of the container. To ensure that the lid can close tightly and effectively prevent the contents from accidentally spilling out, fasteners are usually installed between the lid and the box. As a key component for connecting and securing the lid and the box, the performance of the fasteners directly affects the user experience and safety of the container.

[0003] For toolboxes with multiple vertically arranged fasteners, the existing fastener structure has defects. When the upper fastener is opened, due to the lack of an effective positioning function, the upper fastener will droop down on its own. At this time, the drooping fastener is very likely to mechanically interfere with the adjacent lower fastener, making it impossible for the operator to open or close the lower fastener normally, and may even damage the fastener or the container itself, causing great inconvenience to actual use. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of the existing technology by providing a fastener and toolbox that achieves stable positioning and effectively prevents the fastener from sagging and interfering with the lower fastener.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] Fasteners, including:

[0007] The fastener body has a limiting protrusion along a first direction, and a hook at the upper end of the fastener body for fastening with the upper connecting piece.

[0008] A first rotating shaft is used for rotatable connection with the lower connecting member.

[0009] The second rotating shaft is provided with an eccentric shaft body along the first direction;

[0010] The fastener body is rotatably sleeved on the second rotating shaft, and the eccentric shaft body cooperates with the limiting protrusion.

[0011] In a preferred embodiment, the first rotating shaft and the second rotating shaft are the two ends of a plastic rotating shaft body.

[0012] In a preferred embodiment, the upper connector is provided with a buckle seat, which is engaged with the hook portion of the buckle body;

[0013] A guide slope is provided between the buckle and the upper connector. The slope of the guide slope is 10°-35°. The guide slope is used to guide the hook to fasten with the buckle.

[0014] In a preferred embodiment, the lower connector is provided with an assembly groove, the first rotating shaft is rotatably disposed in the assembly groove, and the inner wall of the assembly groove is provided with a limiting strip to prevent the first rotating shaft from coming out of the assembly groove.

[0015] In a preferred embodiment, the fastener body has through holes on both sides, and the second rotating shaft passes through the through holes so that the fastener body is rotatably connected to the second rotating shaft.

[0016] In a preferred embodiment, the cross-sectional profile of the eccentric shaft includes:

[0017] The first arc segment, the center of which is located on the second rotation axis;

[0018] The second arc segment has a diameter smaller than that of the first arc segment;

[0019] Two straight line segments are respectively connected to the two sides of the first arc segment and the second arc segment, and the straight line segments are tangent to the first arc segment and the second arc segment respectively.

[0020] In a preferred embodiment, when the buckle body is disengaged from the upper connector and rotated to the first angle, the limiting protrusion abuts against the straight segment of the eccentric shaft contour.

[0021] In a preferred embodiment, the first angle is 0°-50°.

[0022] In a preferred embodiment, the upper connector is a cover and the lower connector is a box.

[0023] Alternatively, both the upper connector and the lower connector may be box-shaped.

[0024] A toolbox, the toolbox including the fasteners of the above embodiments.

[0025] Compared with existing technologies, this technical solution has the following advantages:

[0026] By setting a limiting protrusion on the buckle body and an eccentric shaft on the second rotating shaft, the buckle is effectively positioned after being opened by the cooperation between the two. When the buckle body is released from the upper connecting piece and rotates to a certain angle, the limiting protrusion abuts against the eccentric shaft, preventing the buckle body from continuing to droop and avoiding mechanical interference with the buckle below. Attached Figure Description

[0027] Figure 1 This is a cross-sectional view of the fastener described in this utility model;

[0028] Figure 2 This is a structural schematic diagram of the fastener described in this utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the fastener body described in this utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the plastic rotating shaft of this utility model;

[0031] Figure 5 This is a cross-sectional view of the plastic shaft body described in this utility model;

[0032] Figure 6 This is a schematic diagram of the toolbox described in this utility model;

[0033] Figure 7 This is a front view of the toolbox described in this utility model.

[0034] In the diagram: 100 Buckle, 110 Buckle body, 111 Limiting protrusion, 112 Hook, 113 Actuating part, 114 Through hole, 115 Buckle side plate, 120 Plastic rotating shaft, 121 First rotating shaft, 122 Second rotating shaft, 123 Eccentric shaft, 123a First arc segment, 123b Second arc segment, 123c Straight segment, 124 Rotating shaft side plate, 200 Upper connector, 210 Buckle seat, 220 Guide slope, 300 Lower connector, 310 Assembly groove, 320 Limiting strip. Detailed Implementation

[0035] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0036] First Embodiment

[0037] Please refer to Figure 1 and Figure 2 An embodiment of this utility model provides a fastener 100, comprising:

[0038] The fastener body 110 has a limiting protrusion 111 along a first direction, and a hook 112 at the upper end of the fastener body 110 for fastening with the upper connector 200.

[0039] The first rotating shaft 121 is used for rotatable connection with the lower connecting member 300.

[0040] The second rotating shaft 122 is provided with an eccentric shaft body 123 along the first direction;

[0041] The buckle body 110 is rotatably sleeved on the second rotating shaft 122, and the eccentric shaft 123 cooperates with the limiting protrusion 111.

[0042] By providing a limiting protrusion 111 on the buckle body 110 and an eccentric shaft 123 on the second rotating shaft 122, the buckle is effectively positioned after being opened through the cooperation between the two. When the buckle body 110 is released from the upper connecting member 200 and rotates to a certain angle, the limiting protrusion 111 abuts against the eccentric shaft 123, preventing the buckle body 110 from continuing to droop and avoiding mechanical interference with the buckle below.

[0043] like Figure 3 As shown, the upper end of the buckle body 110 is provided with the hook portion 112, which is used to fasten with the upper connecting member 200. The lower end of the buckle body 110 is provided with the lever portion 113, which is used to move the buckle body 110 and release the buckle body 110 from the upper connecting member 200. The buckle body 110 extends in an arc shape between the hook portion 112 and the lever portion 113.

[0044] like Figure 3 As shown, the buckle body 110 has buckle side plates 115 on its left and right sides, respectively. The buckle side plates 115 are integrally formed with the buckle body 110, ensuring the strength and stability of the structure. Each buckle side plate 115 has a through hole 114, the diameter of which matches the size of the second rotating shaft 122, ensuring that the second rotating shaft 122 can smoothly pass through the through hole 114, thus realizing the rotational connection between the buckle body 110 and the second rotating shaft 122.

[0045] A limiting protrusion 111 is provided on the concave surface of the fastener body 110, and the limiting protrusion 111 extends and connects to two fastener side plates 115. The limiting protrusion 111 is arranged adjacent to the through hole 114. This layout design allows the eccentric shaft 123 on the second rotating shaft 122 to be in an adjacent position to the limiting protrusion 111 after the second rotating shaft 122 passes through the through hole 114, providing a basis for the subsequent limiting function.

[0046] like Figures 1 to 4As shown, the plastic rotating shaft body 120 includes a first rotating shaft 121, a second rotating shaft 122, and two rotating shaft side plates 124. The first rotating shaft 121 and the second rotating shaft 122 are the two ends of the plastic rotating shaft body 120. The axial direction of the second rotating shaft 122 is parallel to the axial direction of the first rotating shaft 121. This parallel design ensures the stability of the fastener during rotation.

[0047] In this embodiment, the distance from the upper end to the lower end of the buckle body 110 is more than 2.5 times the distance from the limiting protrusion 111 to the lower end of the buckle body 110. Simultaneously, the height of the lower connecting member 300 is more than three times the distance between the centers of the first rotating shaft 121 and the second rotating shaft 122, preventing interference between the lower end of the buckle body 100 and the components below.

[0048] The first rotating shaft 121 is connected between the two rotating shaft side plates 124. The first rotating shaft 121 is used to rotatably connect with the lower connecting member 300 so that the fastener 100 can rotate at a certain angle relative to the lower connecting member 300.

[0049] The two ends of the second rotating shaft 122 are respectively inserted through the outside of the two rotating shaft side plates 124, and are used to cooperate with the through holes 114 of the two fastener side plates 115 of the fastener body 110, so that the plastic rotating shaft body 120 is located between the two fastener side plates 115.

[0050] The second rotating shaft 122 is provided with the limiting protrusion 111 along the first direction, which is the axial direction of the second rotating shaft 122.

[0051] The plastic rotating shaft 120 is made of plastic. The first rotating shaft 121, the second rotating shaft 122, and the rotating shaft side plate 124 can be fixed together by hot melting or other methods, or integrally injection molded. This simplifies its manufacturing and reduces usage costs.

[0052] like Figure 1 and Figure 5 As shown, the cross-sectional profile of the eccentric shaft 123 includes:

[0053] The first arc segment 123a, the center of the first arc segment 123a is located on the second rotation axis 122;

[0054] The diameter of the second arc segment 123b is smaller than the diameter of the first arc 123a;

[0055] Two straight line segments 123c are respectively connected to the two sides of the first arc segment 123a and the second arc segment 123b, and the straight line segments 123c are tangent to the first arc segment 123a and the second arc segment 123b respectively.

[0056] The center of the eccentric shaft 123 is offset from its connection position with the second rotating shaft 122. When the fastener body 110 is fastened to the upper connecting member 200, the line connecting the centers of the first arc segment 123a and the second arc segment 123b is set approximately vertically, the limiting protrusion 111 of the fastener body 110 is opposite to the first arc segment 123a, and the two maintain a gap.

[0057] When the buckle body 110 is disengaged from the upper connector 200 and the buckle body 110 rotates to the first angle, the center line connecting the first arc segment 123a and the second arc segment 123b is inclined, and the limiting protrusion 111 of the buckle body 110 abuts against the straight segment 123c to prevent the buckle body 110 from continuing to rotate downward and to prevent the buckle body 110 from sagging excessively.

[0058] like Figure 1 As shown, when the buckle body 110 is unfastened from the upper connector 200 and rotated to the first angle, the limiting protrusion 111 abuts against the straight segment 123c of the eccentric shaft 123 profile, so that the buckle body 110 maintains the state of the first angle.

[0059] The first angle refers to the angle between the buckle body 110 and the vertical direction. The first angle is 0°-50°, preferably 25°.

[0060] like Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, the upper connector 200 is provided with a buckle seat 210, which is fastened to the hook portion 112 of the buckle body 110;

[0061] A guide slope 220 is provided between the buckle 210 and the upper connector 200. The slope of the guide slope 220 is 10°-35°. The guide slope 220 is used to guide the hook 112 to fasten with the buckle 210.

[0062] When it is necessary to fasten the buckle body 110 to the upper connector 200, the operator only needs to bring the hook 112 of the buckle body 110 close to the upper connector 200. At this time, the guide slope 220 begins to function, and its inclined surface provides a clear guide for the hook 112, allowing the hook 112 to slide smoothly along the guide slope 220 towards the buckle seat 210. As the hook 112 moves, when it reaches the appropriate position, the hook 112 will naturally form a tight fastening with the buckle seat 210. The entire fastening process is smooth and accurate, greatly improving the fastening efficiency and quality.

[0063] like Figure 6 and Figure 7 As shown, the lower connector 300 is provided with an assembly groove 310, and the first rotating shaft 121 is rotatably disposed in the assembly groove 310. The inner wall of the assembly groove 310 is provided with a limiting strip 320 to prevent the first rotating shaft 121 from coming out of the assembly groove 310.

[0064] The opening of the assembly groove 310 is oriented in a certain direction. Two limiting strips 320 are provided on the two inner walls of the assembly groove 310. The limiting strips 320 are made of rubber or other materials and are elastic.

[0065] When installing the first rotating shaft 121 into the assembly groove 310 of the lower connector 300, the operator aligns the first rotating shaft 121 with the opening of the assembly groove 310 and applies a certain pressure to move it into the assembly groove 310. During the movement, the first rotating shaft 121 will press against the limiting strip 320 on the inner wall of the assembly groove 310. Since the limiting strip 320 is elastic, it will deform under the pressure of the first rotating shaft 121, thereby providing space for the first rotating shaft 121 to enter.

[0066] When the first rotating shaft 121 is fully inserted into the assembly groove 310, the pressure applied to the limiting strip 320 disappears, and the limiting strip 320 quickly returns to its original shape, tightly adhering to the surface of the first rotating shaft 121, thus forming an effective limiting effect.

[0067] The method of using the fastener 100 is as follows:

[0068] 1. Fastening operation

[0069] Align the hook 112 of the buckle body 110 with the buckle seat 210 on the upper connector 200, and press the lever part 113 of the buckle body 110 to make the hook 112 and the buckle seat 210 on the upper connector 200 tightly fasten together. In the fastened state, the center line connecting the first arc segment 123a and the second arc segment 123b is set approximately vertically, and the limiting protrusion 111 of the buckle body 110 is opposite to the first arc segment 123a and maintains a gap, ensuring that the buckle body 110 can rotate normally.

[0070] 2. Fastening and releasing operation

[0071] When it is necessary to release the fastener body 110 from the upper connector 200, the operator manually moves the lever 113 at the lower end of the fastener body 110 outward. Since the fastener body 110 is rotatably mounted on the second rotating shaft 122, under the external force of the lever 113, the fastener body 110 rotates around the second rotating shaft 122. Simultaneously, because the first rotating shaft 121 is rotatably connected to the lower connector 300, the hook 112 of the fastener body 110 moves upward and disengages from the fastener seat 210 of the upper connector 200, thus completing the fastening and releasing operation.

[0072] After the fastener body 110 is released from the upper connecting member 200, the fastener body 110 loses the constraint of the upper connecting member 200 and rotates downward under the action of gravity. When the fastener body 110 rotates to the first angle, the center line connecting the first arc segment 123a and the second arc segment 123b is inclined, and at this time, the limiting protrusion 111 of the fastener body 110 abuts against the straight segment 123c. Due to the blocking effect of the straight segment 123c, the fastener body 110 cannot continue to rotate downward, thereby realizing the limiting function. This limiting function effectively prevents the fastener body 110 from sagging excessively, avoids mechanical interference with other fasteners or components below, and improves the convenience and safety of container use.

[0073] The fastener 100 can be used to connect the lid and the box body, wherein the upper connector 200 is the lid and the lower connector 300 is the box body. Of course, the fastener 100 can also be used to connect two adjacent box bodies, wherein both the upper connector 200 and the lower connector 300 are box bodies.

[0074] Second Embodiment

[0075] like Figure 1 and Figure 2 As shown, the toolbox includes the buckle 100 described in the first embodiment.

[0076] The toolbox includes a lid and at least one box body, with the fastener 100 provided between the lid and the box body.

[0077] When there are multiple boxes, the multiple boxes are stacked vertically, and adjacent boxes are connected by the fasteners 100.

[0078] The embodiments described above are only used to illustrate the technical ideas and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. The scope of patent application of this utility model should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in this utility model still fall within the patent scope of this utility model.

Claims

1. A fastener (100), characterized in that, include: The fastener body (110) has a limiting protrusion (111) along a first direction, and a hook (112) is provided at the upper end of the fastener body (110), which is used to fasten with the upper connector (200). A first rotating shaft (121) is used for rotatable connection with the lower connecting member (300). The second rotating shaft (122) is provided with an eccentric shaft (123) along the first direction; The buckle body (110) is rotatably sleeved on the second rotating shaft (122), and the eccentric shaft (123) cooperates with the limiting protrusion (111).

2. The fastener (100) as described in claim 1, characterized in that, The first rotating shaft (121) and the second rotating shaft (122) are the two ends of the plastic rotating shaft body (120).

3. The fastener (100) as described in claim 1, characterized in that, The upper connector (200) is provided with a buckle (210), and the buckle (210) is fastened to the hook (112) of the buckle body (110); A guide slope (220) is provided between the buckle (210) and the upper connector (200). The slope of the guide slope (220) is 10°-35°. The guide slope (220) is used to guide the hook (112) to fasten with the buckle (210).

4. The fastener (100) as described in claim 1, characterized in that, The lower connector (300) is provided with an assembly groove (310), and the first rotating shaft (121) is rotatably disposed in the assembly groove (310). The inner wall of the assembly groove (310) is provided with a limiting strip (320) to prevent the first rotating shaft (121) from coming out of the assembly groove (310).

5. The fastener (100) as described in claim 1, characterized in that, The fastener body (110) has through holes (114) on both sides, and the second rotating shaft (122) passes through the through holes (114) so ​​that the fastener body (110) is rotatably connected to the second rotating shaft (122).

6. The fastener (100) as described in claim 1, characterized in that, The cross-sectional profile of the eccentric shaft (123) includes: The center of the first arc segment (123a) is located on the second rotation axis (122); The diameter of the second arc segment (123b) is smaller than the diameter of the first arc segment (123a); Two straight line segments (123c) are connected to the two sides of the first arc segment (123a) and the second arc segment (123b), respectively, and the straight line segments (123c) are tangent to the first arc segment (123a) and the second arc segment (123b), respectively.

7. The fastener (100) as described in claim 6, characterized in that, When the buckle body (110) is unfastened from the upper connector (200) and rotated to the first angle, the limiting protrusion (111) abuts against the straight segment (123c) of the contour of the eccentric shaft (123).

8. The fastener (100) as described in claim 7, characterized in that, The first angle is 0°-50°.

9. The fastener (100) as described in claim 1, characterized in that, The upper connector (200) is a cover, and the lower connector (300) is a box. Alternatively, both the upper connector (200) and the lower connector (300) may be box-shaped.

10. A toolbox, characterized in that, Includes the fastener (100) as described in any one of claims 1 to 9.

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