Lead sealing structure

Abstract

The utility model discloses a lead sealing structure which comprises a lead sealing screw and a lead sealing cap buckled on the lead sealing screw, and further comprises a clamp spring installed in the lead sealing cap, and the clamp spring is an elastic piece. The lead sealing cap comprises a lead sealing groove used for installing a lead sealing screw and a limiting part used for limiting movement of the clamping spring. A gap between the limiting part and the lead sealing cap forms a mounting cavity for mounting a clamp spring; and the lead sealing groove is communicated with the mounting cavity, so that the lead sealing cap is clamped with the lead sealing screw through the clamp spring. Compared with the prior art, the lead sealing structure cannot be restored after being damaged, so that the safety is higher.

Description

Technical Field

[0001] The utility model relates to the field of instruments and meters, in particular to a lead sealing structure. Background Art

[0002] The commonly used lead seal structure at present includes lead seal screws, lead seal wires and lead seal blocks. The lead seal passes through the lead seal screw cap on the sealed object and is connected to the sealed object. The two ends of the lead seal wire pass through the lead seal block and are tied together. The lead seal block is then flattened with lead seal pliers. However, since the lead seal structure is exposed and the lead seal block is easily deformed, it is easy to pick the lead seal block from the middle with a sharp tool. After opening the lead seal wire knot, the lead seal screw can be unscrewed, achieving the purpose of destroying the lead seal without being discovered.

[0003] For example, the Chinese utility model patent with application number 202223314112.3 (authorization announcement number CN218558630U) discloses a diverter lead seal structure and a charging pile, which relates to the technical field of charging piles. The diverter lead seal structure includes a cover body and a lead seal. A housing space adapted to the diverter is provided in the cover body, and the housing space is used for loading the diverter. The lead seal penetrates into the housing space from the outside of the cover body, and the lead seal is used to connect with the diverter to fix the cover body to the diverter. The lead seal includes a lead seal screw and a lead seal wire, and a perforation is provided radially through the upper nut of the lead seal screw; a lead seal hole is provided on the lead seal part, and the lead seal screw passes through the lead seal hole and is detachably connected to the diverter; a groove and a first through hole connected to the lead seal hole are provided on the lead seal part; the groove and the first through hole are respectively located on opposite sides of the radial direction of the lead seal hole; the lead seal wire passes through the groove, the perforation and the first through hole in sequence to complete the lead seal. The utility model can open the lead seal screw by opening the lead seal line, and can achieve the purpose of destroying the lead seal without being discovered after the lead seal line is restored, and needs to be improved. Utility Model Content

[0004] The first technical problem to be solved by the utility model is to provide a lead seal structure for the above technical status, so that the lead seal structure cannot be restored after being destroyed.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: a lead sealing structure, comprising a lead sealing screw and a lead sealing cap buckled on the lead sealing screw, characterized in that: it also comprises a retaining spring installed in the lead sealing cap, and the retaining spring is an elastic member; the lead sealing cap comprises a longitudinally extending lead sealing groove for installing the lead sealing screw and a laterally extending limiting portion for limiting the movement of the retaining spring; the gap between the limiting portion and the lead sealing cap forms a laterally extending installation cavity for installing the retaining spring; the lead sealing groove is communicated with the installation cavity, so that the lead sealing cap is clamped with the lead sealing screw through the retaining spring.

[0006] In order to be able to destroy the lead sealing cap and thus open the lead sealing structure, preferably, the lead sealing groove of the lead sealing cap is arranged at a position deviating from the center and close to the side wall of the lead sealing cap, so that the side wall of the lead sealing cap is provided with a vertical notch, and the installation cavity and the lead sealing groove are both connected to the notch.

[0007] In order to make the lead sealing cap easier to be destroyed, preferably, a first guide groove is provided on the other side wall of the lead sealing cap.

[0008] In order to make the lead sealing cap easier to be destroyed, preferably, the second guide groove on the top of the inner side of the lead sealing cap, one end of the second guide groove is connected to the notch.

[0009] In order to achieve a better clamping effect, preferably, the clamping spring is an "Ω" type, and the clamping spring includes a crossbeam and a first connecting arm and a second connecting arm connected to the crossbeam and symmetrical to each other.

[0010] In order to install the retaining ring, preferably, the lead sealing cap is provided with a mounting groove, the opening of the mounting groove is provided on the bottom surface of the lead sealing cap, and the mounting cavity and the lead sealing groove are both connected with the mounting groove, so that the retaining ring can enter the mounting cavity through the mounting groove.

[0011] In order to clamp the lead sealing screw, preferably, the first connecting arm and the second connecting arm are both provided with a bending portion, so that the first connecting arm and the second connecting arm are first closed together and then extended apart from each other from the connection with the crossbeam.

[0012] Preferably, the sealing screw is provided with a first groove for installing a retaining ring, so that the first connecting arm and the second connecting arm of the retaining ring are both engaged with the sealing screw.

[0013] Preferably, the side wall of the lead sealing cap is provided with a second groove so that the cross beam of the retaining spring is clamped with the lead sealing cap.

[0014] In order to save materials and reduce weight, preferably, the limiting portion is connected to the side wall of the lead sealing cap through a connecting portion.

[0015] Compared with the prior art, the advantages of the utility model are: a retaining spring installed in the lead sealing cap is provided, and the lead sealing cap and the lead sealing screw are clamped together by the retaining spring. Since the retaining spring is located inside the lead sealing cap, after the lead sealing structure is installed, the lead sealing structure can only be opened by destroying the lead sealing cap, and the lead sealing cap cannot be restored after being destroyed. Therefore, it has better protection and safety; and the utility model only uses the lead sealing cap, the retaining spring and the lead sealing screw for lead sealing, so the structure is simple and the installation is quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0017] Figure 2This is a schematic diagram of an embodiment of the utility model;

[0018] Figure 3 This is a bottom view of the lead seal cap of the utility model embodiment;

[0019] Figure 4 for Figure 3 The cross-sectional view at AA of FIG.

[0020] Figure 5 for Figure 3 A cross-sectional stereogram at AA;

[0021] Figure 6 It is a schematic diagram of a retaining spring according to an embodiment of the utility model;

[0022] Figure 7 It is a schematic diagram of the cooperation between the retaining spring and the lead sealing cap according to an embodiment of the utility model. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] like Figure 1-7 Shown is a preferred embodiment of the present utility model.

[0025] like Figure 1 As shown, the lead sealing structure includes a lead sealing screw 1, a lead sealing cap 2 buckled on the lead sealing screw 1, and a retaining spring 3 installed in a lead sealing groove 21 of the lead sealing cap 2.

[0026] The lead seal cap 2 includes a longitudinally extending lead seal groove 21 for installing the lead seal screw 1 and a horizontally extending limiting portion 22 for limiting the movement of the retaining spring 3; the gap between the limiting portion 22 and the lead seal cap 2 forms a horizontally extending installation cavity 23 for installing the retaining spring 3; the lead seal groove 21 is connected with the installation cavity 23, so that the lead seal cap 2 is clamped with the lead seal screw 1 through the retaining spring 3; the lead seal groove 21 of the lead seal cap 2 is arranged at a position deviating from the center and close to the side wall of the lead seal cap 2, so that the side wall of the lead seal cap 2 is provided with a vertical notch 24, and the installation cavity 23 and the lead seal groove 21 are both connected with the notch 24. A first guide groove 25 is arranged on the other side wall of the lead seal cap 2. A second guide groove 26 is arranged at the top of the inner side of the lead seal cap 2, and one end of the second guide groove 26 is connected with the notch 24. The vertical notch 24, the second guide groove 26 and the first guide groove 25 corresponding to the notch 24 on the lead sealing cap 2 make the lead sealing cap 2 easy to be destroyed when subjected to force; when it is necessary to open the installed lead sealing structure, an external force can be applied to the lead sealing cap 2 to destroy the second guide groove 26 and the first guide groove 25 along the vertical notch 24, thereby destroying the lead sealing cap 2 to open the lead sealing structure.

[0027] The lead seal cap 2 is provided with a mounting groove 27, the opening of which is provided at the bottom surface of the lead seal cap 2, and the mounting cavity 23 and the lead seal groove 21 are both connected to the mounting groove 27, so that the retaining spring 3 can enter the mounting cavity 23 through the mounting groove 27. The limiting portion 22 is connected to the side wall of the lead seal cap 2 through a plurality of connecting portions 29.

[0028] like Figure 6 As shown, the retaining spring 3 is an "Ω"-shaped elastic member; the retaining spring 3 includes a cross beam 31 and a first connecting arm 32 and a second connecting arm 33 connected to the cross beam 31 and symmetrical to each other. The first connecting arm 32 and the second connecting arm 33 are both provided with a bending portion, so that the first connecting arm 32 and the second connecting arm 33 are first closed together from the connection with the cross beam 31 and then separated and extended. The lead seal screw 1 is provided with a first groove 11 for installing the retaining spring 3, so that the first connecting arm 32 and the second connecting arm 33 of the retaining spring 3 are both clamped with the lead seal screw 1. The side wall of the lead seal cap 2 is provided with a second groove 28, so that the cross beam 31 of the retaining spring 3 is clamped with the lead seal cap 2.

[0029] The installation method of this embodiment is:

[0030] Install the sealing screw 1 on the electric energy meter that needs to be sealed, and clamp the retaining ring 3 on the sealing screw 1, so that the first connecting arm 32 and the second connecting arm 33 are clamped in the first groove 11. Then, use hands or tools to make the first connecting arm 32 and the second connecting arm 33 move closer to each other and deform, so that the retaining ring 3 can pass through the installation groove 27 of the sealing cap 2 and the sealing groove 21 into the installation cavity 23, so that the sealing structure is installed on the electric energy meter.

Claims

1. A lead sealing structure, comprising a lead sealing screw (1) and a lead sealing cap (2) buckled on the lead sealing screw (1), characterized in that: The invention also comprises a retaining spring (3) installed in the lead sealing cap (2), wherein the retaining spring (3) is an elastic member; the lead sealing cap (2) comprises a longitudinally extending lead sealing groove (21) for installing the lead sealing screw (1) and a laterally extending limiting portion (22) for limiting the movement of the retaining spring (3); a laterally extending installation cavity (23) for installing the retaining spring (3) is formed by a gap between the limiting portion (22) and the lead sealing cap (2); the lead sealing groove (21) is connected to the installation cavity (23), so that the lead sealing cap (2) is clamped with the lead sealing screw (1) through the retaining spring (3).

2. The lead seal structure according to claim 1, characterized in that: The lead sealing groove (21) of the lead sealing cap (2) is arranged at a position deviating from the center and close to the side wall of the lead sealing cap (2), so that the side wall of the lead sealing cap (2) is provided with a vertical notch (24), and the installation cavity (23) and the lead sealing groove (21) are both connected to the notch (24).

3. The lead seal structure according to claim 2, characterized in that: A first guide groove (25) is provided on the other side wall of the lead sealing cap (2).

4. The lead seal structure according to claim 2, characterized in that: A second guide groove (26) is formed at the top of the inner side of the lead sealing cap (2), and one end of the second guide groove (26) is connected to the notch (24).

5. The lead seal structure according to claim 1, characterized in that: The clamping spring (3) is of an "Ω" type and comprises a crossbeam (31) and a first connecting arm (32) and a second connecting arm (33) which are connected to the crossbeam (31) and are symmetrical to each other.

6. The lead seal structure according to claim 5, characterized in that: The lead sealing cap (2) is provided with a mounting groove (27), the opening of the mounting groove (27) is arranged on the bottom surface of the lead sealing cap (2), and the mounting cavity (23) and the lead sealing groove (21) are both connected to the mounting groove (27), so that the retaining spring (3) can enter the mounting cavity (23) after passing through the mounting groove (27) and the lead sealing groove (21).

7. The lead seal structure according to claim 5, characterized in that: The first connecting arm (32) and the second connecting arm (33) are both provided with a bending portion, so that the first connecting arm (32) and the second connecting arm (33) are first closed together and then separated and extended from the connection with the crossbeam (31).

8. The lead seal structure according to claim 5, characterized in that: The lead sealing screw (1) is provided with a first groove (11) for installing a retaining ring (3), so that the first connecting arm (32) and the second connecting arm (33) of the retaining ring (3) are both engaged with the lead sealing screw (1).

9. The lead seal structure according to claim 5, characterized in that: The side wall of the lead sealing cap (2) is provided with a second groove (28) so that the crossbeam (31) of the clamping spring (3) is clamped with the lead sealing cap (2).

10. The lead seal structure according to claim 1, characterized in that: The limiting portion (22) is connected to the side wall of the lead sealing cap (2) via a connecting portion (29).

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