Lead sealing structure

Abstract

The utility model discloses a lead sealing structure which comprises a shell and buckles, the upper end and the lower end of the shell are provided with through holes in pairs, lead sealing lines are arranged in the through holes in a penetrating mode, the buckles are arranged in pairs, and the buckles arranged in pairs are located at the left end and the right end of the shell. The outer side wall of the buckle is provided with an elastic part expanding outwards in the radial direction, the top end of the buckle is provided with a jacking part, the left end and the right end of the shell are each provided with a cavity matched with the elastic part, the cavities communicate with the through hole, and when the elastic part is matched with the cavities, the jacking part tightly presses the lead sealing line. Under the combined action of the elastic part which is arranged on the outer side wall of the buckle and expands outwards in the radial direction and the jacking part arranged at the top end of the buckle, the buckle can only lock the lead sealing line in one direction and cannot be pulled out, and due to the fact that the lead sealing line is locked in the shell, the lead sealing line can be perceived by a user in time after the lead sealing structure is maliciously damaged or replaced. And the safety of the article is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lead seals, and particularly relates to a lead seal structure. Background Art

[0002] The commonly used anti-opening device at present is a lead seal structure, which usually includes a lead body. A through hole is provided on the lead body, a silk thread is threaded through the through hole, and finally the lead body is pressed tightly with a seal clamp. In use, this method may be maliciously damaged or replaced, but the user cannot know, thus reducing the security of the item.

[0003] Based on this, the utility model designs a lead seal structure with anti-theft and anti-opening functions to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a lead seal structure. Under the combined action of an elastic part that expands radially outward on the outer side wall of the buckle and a tightening part arranged at the top end of the buckle, the buckle can only lock the lead seal wire unidirectionally and cannot be pulled out. Since the lead seal wire is locked inside the shell, when the lead seal structure is maliciously damaged or replaced, it can be perceived by the user in time, improving the security of the item.

[0005] To achieve the above technical purpose, the utility model is realized through the following technical solutions:

[0006] A lead seal structure includes:

[0007] A shell, through holes penetrating through the upper and lower ends of the shell are arranged in pairs, and a lead seal wire is threaded through the through holes;

[0008] Buckles, the buckles are arranged in pairs, the paired buckles are located at the left and right ends of the shell, and an elastic part that expands radially outward is arranged on the outer side wall of the buckle and a tightening part is arranged at the top end of the buckle. Cavities matching the elastic part are respectively arranged at the left and right ends of the shell, and the cavities are communicated with the through holes. When the elastic part matches the cavities, the tightening part presses the lead seal wire.

[0009] In this solution, the paired buckles are located at the left and right ends of the shell to lock the two free ends of the lead seal wire. The elastic part arranged on the outer side wall of the buckle enables the buckle to only lock the lead seal wire unidirectionally and cannot be pulled out. If forced to pull out, the whole structure will be damaged and cannot be restored. The tightening part arranged at the top end of the buckle is used to press the lead seal wire. The whole device is simple and effective. When the lead seal structure is maliciously damaged or replaced, it can be perceived by the user in time, improving the security of the item.

[0010] As a further technical solution of the lead seal structure, the elastic part includes a fixing post and an elastic plate, and the cavity includes a fixing cavity. The elastic plate is a component made of an elastic material, which improves the installation convenience of the buckle.

[0011] Wherein, the elastic plates are arrayed obliquely on the outer side wall of the fixing post to form a fishbone shape, and a clamping groove matching the elastic plate is arranged on the inner wall surface of the fixing cavity. Through the matching of the fixing post in the shape of a fishbone and the clamping groove, the buckle can only lock the lead seal wire unidirectionally and cannot be pulled out, further improving the security of the article.

[0012] As a further technical solution of the lead seal structure, to further improve the security of the article, the inclination angle range between the elastic plate and the fixing post is within 45° - 60°.

[0013] As a further technical solution of the lead seal structure, a transition fillet is arranged at the entrance end of the clamping groove, further improving the installation convenience of the buckle.

[0014] As a further technical solution of the lead seal structure, a positioning plate is further connected to the bottom end of the buckle, and a positioning groove matching the positioning plate is arranged on the outer shell. The depth of the positioning groove is greater than or equal to the axial length of the positioning plate. The complete matching combination of the positioning groove and the positioning plate increases the difficulty of being maliciously damaged, further improving the security of the article.

[0015] As a further technical solution of the lead seal structure, the end face of the pressing part is a plane, and an arc groove is arranged along the axial direction of the through hole in the middle of the plane. The arc groove and the through hole form a clamping opening, and the cross-sectional area of the clamping opening is less than or equal to the cross-sectional area of the lead seal wire, so that the lead seal wire can be completely clamped and will not easily come out. At the same time, due to the interaction of forces, conversely, the reaction force of the lead seal wire on the buckle makes the combination of the elastic part and the cavity closer.

[0016] As a further technical solution of the lead seal structure, anti-slip lines are arranged on the inner wall surface of the arc groove, and by increasing the friction force, the locking force of the lead seal wire is further improved.

[0017] As a further technical solution of the lead seal structure, the elastic part includes a fixing post and an expansion rib, the pressing part includes a pressing plate, the cavity includes a fixing cavity and an expansion cavity, the fixing post is screwed into the fixing cavity, the top end of the fixing post is connected to the expansion rib, and the other end of the expansion rib is connected to the pressing plate;

[0018] Among them, the fixed cavity, the expansion cavity and the through hole are connected in sequence. The expansion cavity is a cavity with a gradually expanding cross-sectional area, and the distance from the expansion cavity to the through hole is less than the length of the expansion rib. When the pressing plate presses the lead seal wire, the expansion rib deforms radially and matches the expansion cavity. Through the matching and limiting of the deformed expansion rib and the expansion cavity, the lead seal wire is locked and cannot be pulled out.

[0019] As a further technical solution of the lead seal structure, limiting protrusions are provided on the inner wall surface of the expansion cavity to prevent the expansion rib from being deformed excessively and damaged.

[0020] As a further technical solution of the lead seal structure, an RFID chip is also provided on the side wall surface of the outer shell. The operating frequency of the RFID chip is 125KHz to 925MHz, which realizes the requirements for the distance and time of reading the RFID chip in different scenarios. When the frequency is low, the reading time is long and the distance is short; when the frequency is high, the reading time is short and the distance can be far.

[0021] Compared with the prior art, the present utility model has the following advantages and beneficial effects:

[0022] The present utility model provides a lead seal structure, including an outer shell and a pair of buckles arranged at the left and right ends of the outer shell. Under the combined action of the elastic part that expands radially outward on the outer side wall of the buckle and the pressing part arranged at the top end of the buckle, the buckle can only lock the lead seal wire unidirectionally and cannot be pulled out. Therefore, when the lead seal structure is maliciously damaged or replaced, it can be perceived by the user in time, improving the security of the article and achieving the purpose of anti-theft and anti-opening. Description of the Drawings

[0023] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, form a part of this application, and do not constitute a limitation to the embodiments of the present utility model. In the drawings:

[0024] Figure 1 is the overall structural schematic diagram provided by Embodiment 1 of the present utility model;

[0025] Figure 2 is the side view structural schematic diagram of Embodiment 1 of the present utility model;

[0026] Figure 3 is Figure 2 the cross-sectional structural schematic diagram of the marked A-A in

[0027] Figure 4 is the structural schematic diagram of the buckle;

[0028] Figure 5 is the structural schematic diagram of the outer shell;

[0029] Figure 6 For Figure 3 Schematic enlarged structure diagram of mark B in

[0030] Figure 7 Partial sectional structure diagram of Embodiment 2 of the present utility model.

[0031] Marks in the drawings and corresponding names of components:

[0032] 1 - Outer shell, 2 - Sealing wire, 3 - Through hole, 4 - Snap fastener, 5 - Cover plate, 6 - Fixed cavity, 7 - Fixed column, 8 - Elastic plate, 9 - Bayonet, 10 - Expansion rib, 11 - Expansion cavity, 12 - Limit protrusion, 13 - Pressure plate, 14 - Anti - slip pattern, 15 - Positioning groove, 16 - Transition fillet, 17 - Card slot. Specific implementation mode

[0033] To make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with embodiments and drawings. The illustrative embodiments of the present utility model and their descriptions are only used to explain the present utility model and do not limit the present utility model.

[0034] Embodiment 1

[0035] This Embodiment 1 provides a sealing structure, as Figures 1-6 shown, including an outer shell 1 and snap fasteners 4. Among them, the outer shell 1 has a cuboid shape, and through holes 3 are provided in pairs on the upper and lower end faces of the outer shell 1. The through holes 3 are cylindrical through holes, and the two free ends of the sealing wire 2 are respectively passed through the paired through holes 3. At the same time, the snap fasteners 4 are provided in pairs. The paired snap fasteners 4 are located at the left and right ends of the outer shell 1. A positioning plate is connected to the outer side end of the snap fastener 4. The outer shell 1 is provided with a positioning groove 15 that matches the positioning plate. The depth of the positioning groove 15 is greater than or equal to the axial length of the positioning plate. And an elastic part that expands radially outward is provided on the outer side wall of the axial section of the snap fastener 4, and a tightening part is provided at the top end of the snap fastener 4. Cavities that match the elastic part are respectively provided at the left and right ends of the outer shell 1. The cavities communicate with the through holes 3. When the snap fasteners 4 at both ends of the outer shell 1 are pressed, the elastic part matches the cavity, and at this time, the tightening part presses the sealing wire 2.

[0036] Specifically, please refer to Figure 3 , Figure 4 and Figure 6As shown in the figure, the above-mentioned elastic part includes a fixing post 7 and an elastic plate 8, and the cavity includes a fixing cavity 6. The elastic plate 8 is a component made of Teflon material and has a certain elasticity. The elastic plates 8 are arranged in a fishbone shape on the outer side wall of the fixing post 7 at an angle of 45°. The inclination direction of the elastic plate 8 is opposite to the movement direction of the buckle 4. The inner wall surface of the fixing cavity 6 is provided with a clamping groove 17 that matches the elastic plate 8. The entrance end of the clamping groove 17 is provided with a transition fillet 16. By matching the fixing post 7 in a fishbone shape with the clamping groove 17, the buckle 4 can only lock the lead seal wire 2 unidirectionally and cannot be pulled out.

[0037] At the same time, please refer to Figures 3-4 As shown in the figure, the end face of the pressing part is a plane. An arc groove is arranged along the axial direction of the through hole 3 in the middle of the plane. The arc groove and the through hole 3 form a clamping opening 9. The cross-sectional area of the clamping opening 9 is less than or equal to the cross-sectional area of the lead seal wire 2, so that the lead seal wire can be completely clamped and will not easily come out. Also, due to the reaction force of the lead seal wire 2 on the buckle 4, the elastic plate 8 and the clamping groove 17 are combined more tightly. The inner wall surface of the arc groove is provided with anti-slip lines 14, which further improve the locking force of the lead seal wire 2 by increasing the friction force.

[0038] Embodiment 2

[0039] Embodiment 2 of the present invention provides a lead seal structure, as shown in Figure 1 、 Figure 2 and Figure 7 As shown in the figure, it includes a housing 1 and a buckle 4. Among them, the housing 1 has a cuboid shape. Through holes 3 are provided in pairs on the upper and lower end faces of the housing 1. The through holes 3 are cylindrical or rectangular through holes. The two free ends of the lead seal wire 2 are respectively passed through the paired through holes 3. At the same time, the buckles 4 are provided in pairs. The paired buckles 4 are located at the left and right ends of the housing 1. A positioning plate is connected to the outer side end of the buckle 4. An elastic part that expands radially outward is provided on the outer side wall of the axial section of the buckle 4, and a pressing part is provided at the top end of the buckle 4. Cavities that match the elastic parts are respectively provided at the left and right ends of the housing 1. The cavities are communicated with the through holes 3. When the elastic part matches the cavity, the pressing part presses the lead seal wire 2 at this time.

[0040] Specifically, please refer to Figure 7As shown, the elastic part includes a fixing post 7 and an expanding rib 10, the pressing part includes a pressing plate 13, the cavity includes a fixing cavity 6 and an expanding cavity 11. The fixing post 7 is screwed into the fixing cavity 6. The top end of the fixing post 7 is connected to the expanding rib 10, and the other end of the expanding rib 10 is connected to the pressing plate 13. The above-mentioned fixing cavity 6, expanding cavity 11 and through hole 3 are communicated in sequence, and the expanding cavity is a cavity with a gradually increasing cross-sectional area, such as a horn shape. The distance from the expanding cavity 11 to the through hole 3 is less than the length of the expanding rib 10. When the fixing post 7 is screwed in until the pressing plate 13 presses the lead seal wire 2, the expanding rib 10 is subjected to resistance, and the expanding rib 10 will deform radially and match the expanding cavity 11. Through the matching and limiting of the deformed expanding rib 10 and the expanding cavity 11, the lead seal wire 2 is locked and cannot be pulled out.

[0041] Meanwhile, in this embodiment, a limiting protrusion 12 is provided on the inner wall surface of the expanding cavity 11 to prevent the expanding rib 10 from being deformed excessively and damaged.

[0042] Embodiment 3

[0043] On the basis of the solutions of Embodiment 1 or Embodiment 2, this Embodiment 3 provides another lead seal structure, as Figure 1 and Figure 3 shown, a groove is further provided on the side wall surface of the outer shell. An RFID chip is provided in the groove and the groove is sealed by a cover plate 5. The operating frequency of the above-mentioned RFID chip is 125KHz - 925MHz, meeting the requirements for the distance and time of reading the RFID chip in different scenarios. When the frequency is relatively low, the reading time is longer and the distance is shorter; when the frequency is relatively high, the reading time is shorter and the distance can be farther.

[0044] The specific embodiments described above further elaborate on the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A lead seal structure, characterized in that: include: A shell (1), wherein the upper and lower ends of the shell (1) are provided with through holes (3) in pairs, and a lead sealing wire (2) is passed through the through holes (3); Buckles (4), the buckles (4) are arranged in pairs, the buckles (4) arranged in pairs are located at the left and right ends of the shell (1), and the outer wall of the buckle (4) is provided with an elastic part that expands radially outward, and the top of the buckle (4) is provided with a tightening part, and the left and right ends of the shell (1) are respectively provided with cavities matching the elastic part, and the cavity is connected to the through hole (3), and when the elastic part matches the cavity, the tightening part presses the lead sealing line (2).

2. A lead seal structure according to claim 1, characterized in that: The elastic part comprises a fixing column (7) and an elastic plate (8), the cavity comprises a fixing cavity (6), and the elastic plate (8) is a component made of an elastic material; The elastic plates (8) are arranged in an inclined array on the outer wall of the fixing column (7) to form a fishbone shape, and the inner wall surface of the fixing cavity (6) is provided with a slot (17) matching the elastic plates (8).

3. A lead seal structure according to claim 2, characterized in that: The inclination angle between the elastic plate (8) and the fixing column (7) is in the range of 45° to 60°.

4. A lead seal structure according to claim 2, characterized in that: The entrance end of the slot (17) is provided with a transition fillet (16).

5. A lead seal structure according to claim 2, characterized in that: The bottom end of the buckle (4) is also connected to a positioning plate, and the housing (1) is provided with a positioning groove (15) matching the positioning plate, and the depth of the positioning groove (15) is greater than or equal to the axial length of the positioning plate.

6. A lead seal structure according to claim 1, characterized in that: The end face of the tightening portion is a plane, and an arc groove is provided in the middle of the plane along the axial direction of the through hole (3). The arc groove and the through hole (3) form a bayonet (9), and the cross-sectional area of ​​the bayonet (9) is less than or equal to the cross-sectional area of ​​the lead sealing line (2).

7. A lead seal structure according to claim 6, characterized in that: The inner wall surface of the arc groove is provided with anti-slip grooves (14).

8. A lead seal structure according to claim 1, characterized in that: The elastic part comprises a fixing column (7) and an expansion rib (10), the pressing part comprises a pressing plate (13), the cavity comprises a fixing cavity (6) and an expansion cavity (11), the fixing column (7) is threadedly connected to the fixing cavity (6), the top end of the fixing column (7) is connected to the expansion rib (10), and the other end of the expansion rib (10) is connected to the pressing plate (13); The fixed cavity (6), the expansion cavity (11) and the through hole (3) are connected in sequence; the expansion cavity (11) is a cavity with a gradually expanding cross-sectional area; and the distance from the expansion cavity (11) to the through hole (3) is smaller than the length of the expansion rib (10); when the pressure plate (13) squeezes the lead sealing wire (2), the expansion rib (10) is deformed in the radial direction and matches the expansion cavity (11).

9. A lead seal structure according to claim 8, characterized in that: A limiting protrusion (12) is provided on the inner wall surface of the expansion chamber (11).

10. A lead seal structure according to any one of claims 1 to 9, characterized in that: The side wall surface of the housing (1) is also provided with an RFID chip, and the operating frequency of the RFID chip is 125KHz to 925MHz.

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