A tamper-evident lead seal having barbs

Abstract

The utility model discloses a kind of anti-disassembly lead seal with barb, it is related to anti-disassembly lead seal technical field, including lead seal cap, the through hole is horizontally passed and is opened in the upper end of this lead seal cap, and barb is equipped on the outside of the lower end of lead seal cap;The utility model, when using, first bolt is penetrated from the bottom of lower shell of circuit breaker, after buckling circuit breaker upper shell, using special tool is penetrated into the through hole in the upper end of lead seal cap, lead seal cap is tightened with bolt, to realize the fixation of lead seal cap, special tool is taken out, and the anti-theft of lead seal can be realized.Penetrates into circuit breaker upper shell by the barb of outside setting of lead seal cap, to realize locking fixation, and the section of barb is in reverse setting, so only one-way advance can be achieved, cannot be disassembled.This installation mode does not need to be embedded in mould when injection molding in circuit breaker shell;There is no situation that entire circuit breaker shell is scrapped due to lead seal installation is bad;High yield.

Description

Technical Field

[0001] This utility model specifically relates to the field of tamper-proof lead seal technology, and specifically to a tamper-proof lead seal with barbs. Background Technology

[0002] The tamper-evident seal for molded case circuit breakers is a special tamper-evident seal designed for molded case circuit breakers (a common protective device in low-voltage power distribution systems). It is used to prevent unauthorized personnel from disassembling, adjusting, or tampering with the internal structure of the circuit breaker, and to avoid circuit failures, safety hazards, or metering disputes caused by improper operation.

[0003] Technical bottlenecks of traditional technologies:

[0004] 1. Nut pre-embedding process: The nut needs to be pre-embedded in the mold during DMC or plastic injection molding, and then the resin is thermoformed to cover the metal nut. This process has low production efficiency, high labor costs, and once a defective product is produced, the resin part of the entire product will be scrapped.

[0005] 2. Lead seal pre-embedding process: Lead seals need to be pre-embedded during DMC or resin injection molding. This process has low production efficiency, high labor costs, and once defective products are produced, the entire resin part of the product will be scrapped. Utility Model Content

[0006] The purpose of this utility model is to provide a barbed anti-disassembly lead seal that is directly screwed together for installation. The barbs serve as an anti-disassembly function, and the bolts are non-removable, thereby achieving the anti-disassembly effect; thus solving the technical problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A tamper-proof lead seal with barbs includes a lead seal cap, the upper end of which has a through hole extending laterally, and the lower end of which has barbs on the outer side.

[0009] The lower end of the lead seal cap is provided with an internal thread to facilitate bolt connection.

[0010] As a further technical solution of this utility model, the lead seal cap is tapered, and the angle between the side of the longitudinal section of the lead seal cap and the axis of the lead seal cap is 2-5 degrees.

[0011] As a further technical solution of this utility model, the lead seal cap is fixed in a reserved hole on the upper shell of the circuit breaker.

[0012] As a further technical solution of this utility model, the bolt penetrates through the lower shell of the circuit breaker and is connected to the lead seal cap inside the upper shell of the circuit breaker.

[0013] As a further technical solution of this utility model, the bottom of the lower housing of the circuit breaker is provided with a countersunk hole to facilitate bolt installation.

[0014] As a further technical solution of this utility model, the bolt is a square head or hexagonal bolt, and the shape of the countersunk hole is consistent with the shape of the bolt head.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. In use, the bolt is first inserted into the bottom of the lower casing of the circuit breaker. After the upper casing of the circuit breaker is fastened, a special tool is inserted into the through hole at the top of the lead seal cap and the lead seal cap is tightened with the bolt, thereby fixing the lead seal cap. The special tool is then removed to prevent theft of the lead seal.

[0017] 2. In this utility model, the lead seal cap uses barbs on the outside to penetrate into the upper housing of the circuit breaker, thereby achieving locking and fixing. The cross-section of the barbs is inverted, so it can only be pushed in one direction and cannot be disassembled.

[0018] 3. This utility model eliminates the need to pre-embed the seal in the mold during the injection molding of the circuit breaker housing; it also prevents the entire circuit breaker housing from being scrapped due to poor seal installation; and it boasts a high yield rate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model in use.

[0020] Figure 2 This utility model Figure 1 Top view.

[0021] Figure 3 This utility model Figure 2 AA sectional view.

[0022] Figure 4 This utility model Figure 1 A bottom view.

[0023] Figure 5 This utility model Figure 1 A partial structural diagram.

[0024] Figure 6 This utility model Figure 3 A magnified view of a portion of the image.

[0025] Figure 7 This is a schematic diagram of the lead seal structure in this utility model.

[0026] Figure 8 This utility model Figure 7 Another perspective illustration.

[0027] In the diagram: 1-lead seal cap, 2-through hole, 3-barb, 4-circuit breaker upper shell, 5-circuit breaker lower shell, 6-bolt, 7-counterhole. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-8 In this embodiment of the present invention, a tamper-proof lead seal with barbs includes a lead seal cap 1, which has a through hole 2 extending horizontally through its upper end, and barbs 3 on the outer side of its lower end.

[0030] The lead seal cap 1 has an internal thread at its lower end to facilitate connection with the bolt 6. The lead seal cap 1 is fixed in a pre-drilled hole on the upper housing 4 of the circuit breaker.

[0031] By adopting the above technical solution, when using it, first insert the bolt 6 through the bottom of the lower shell 5 of the circuit breaker, and after fastening the upper shell 4 of the circuit breaker, use a special tool to insert it into the through hole 2 at the upper end of the lead seal cap 1, and tighten the lead seal cap 1 and the bolt 6, thereby fixing the lead seal cap 1. Remove the special tool to achieve the anti-theft of the lead seal.

[0032] The lead seal cap 1 uses the barbs 3 on the outside to insert into the upper housing 4 of the circuit breaker, thereby achieving locking and fixation. The cross section of the barbs 3 is inverted, so it can only be pushed in one direction and cannot be disassembled.

[0033] This installation method eliminates the need to embed the seal within the mold during circuit breaker housing injection molding; it also prevents the entire circuit breaker housing from being scrapped due to improper seal installation; and it boasts a high yield rate.

[0034] In this embodiment, the lead seal cap 1 is tapered, and the angle between the side of the longitudinal section of the lead seal cap 1 and the axis of the lead seal cap 1 is 2-5 degrees.

[0035] The tapered design of the lead cap 1 facilitates the removal of special tools.

[0036] More specifically, a special tool could be a sturdy rope, which is inserted into the through hole 2, and the lead seal cap 1 is engaged with the bolt 6 by twisting the rope before the rope is removed; or a metal clamp, which is inserted into the through hole 2 with a hook, and the lead seal cap 1 is engaged with the bolt 6 before the clamp is removed.

[0037] In this embodiment, the bolt 6 penetrates the lower casing 5 of the circuit breaker and then connects with the lead cap 1 inside the upper casing 4 of the circuit breaker.

[0038] In this embodiment, the bottom of the circuit breaker lower housing 5 is provided with a countersunk hole 7 to facilitate the installation of bolts 6. The bolts 6 are square-headed or hexagonal bolts, and the shape of the countersunk hole 7 is consistent with the shape of the bolt head 6.

[0039] After bolt 6 is inserted into countersunk hole 7, the disassembly tool cannot disassemble bolt 6, thus achieving the effect of double-sided anti-theft and anti-disassembly.

[0040] The working principle of this utility model is as follows: When in use, first insert the bolt 6 through the bottom of the lower shell 5 of the circuit breaker, and after fastening the upper shell 4 of the circuit breaker, use a special tool to insert it into the through hole 2 at the upper end of the lead seal cap 1, and tighten the lead seal cap 1 and the bolt 6, thereby fixing the lead seal cap 1. Remove the special tool to achieve the anti-theft of the lead seal.

[0041] The lead seal cap 1 uses the barbs 3 on the outside to insert into the upper shell 4 of the circuit breaker, thereby achieving locking and fixing. The cross section of the barbs 3 is inverted, so it can only be pushed in one direction and cannot be disassembled.

[0042] Bolt 6 is a square head or hexagonal bolt, and the shape of the countersunk hole 7 is consistent with the head shape of bolt 6.

[0043] After bolt 6 is inserted into countersunk hole 7, the disassembly tool cannot disassemble bolt 6, thus achieving the effect of double-sided anti-theft and anti-disassembly.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tamper-proof lead seal with barbs, characterized in that: Includes a lead cap (1), which has a through hole (2) extending horizontally through its upper end, and barbs (3) provided on the outer side of the lower end of the lead cap (1). The lead seal cap (1) has an internal thread at its lower end to facilitate bolt (6) connection.

2. The tamper-proof lead seal with barbs according to claim 1, characterized in that: The lead cap (1) is tapered, and the angle between the side of the longitudinal section of the lead cap (1) and the axis of the lead cap (1) is 2-5 degrees.

3. The tamper-proof lead seal with barbs according to claim 1, characterized in that: The lead seal cap (1) is fixed in the reserved hole on the upper shell (4) of the circuit breaker.

4. The tamper-proof lead seal with barbs according to claim 1, characterized in that: The bolt (6) passes through the lower shell (5) of the circuit breaker and is connected to the lead seal cap (1) inside the upper shell (4) of the circuit breaker.

5. The tamper-proof lead seal with barbs according to claim 4, characterized in that: The bottom of the lower casing (5) of the circuit breaker is provided with a countersunk hole (7) to facilitate the installation of bolts (6).

6. The tamper-proof lead seal with barbs according to claim 5, characterized in that: The bolt (6) is a square head or hexagonal bolt, and the shape of the countersunk hole (7) is consistent with the shape of the head of the bolt (6).

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