Three-phase meter seal installation fool-proof structure

Abstract

The utility model discloses a three-phase meter seal installation fool-proof structure, which relates to the technical field of meter lead sealing, and comprises a three-phase meter shell, a second lead sealing groove and a second button, and the lead sealing groove is arranged on the three-phase meter shell; a rod groove is formed in the bottom end of the lead sealing groove, the bottom end of the lead sealing groove is fixedly connected with a semi-arc limiting block, and a rope penetrating opening is formed in the position, above the semi-arc limiting block, of the second lead sealing groove. The second button comprises a button disc and an insertion rod. A first limiting block and a second limiting block are symmetrically fixed to the lower end of the button disc. The second button is rotated to enable the second limiting block to be located at the remaining semicircular position of the lead sealing groove, the second button is pressed downwards to enable the whole second button to be pressed into the lead sealing groove, the second button is locked through friction force between the lead sealing line and the lead sealing groove and the button, and at the moment, under limiting of the semicircular limiting block, the lead sealing groove is tightly sealed. And the first limiting block and the second limiting block cannot rotate, so that the second button cannot be separated easily, and the lead sealing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of instrument lead seals, in particular to a fool-proof structure for installing a seal of a three-phase meter. Background Art

[0002] A lead seal is a sealing device that is usually used to prevent goods or items from being illegally opened or tampered with during transportation, storage or use. The materials used to make lead seals are usually pure lead or lead-tin alloy, because these two materials are easy to melt and can maintain sealing. However, modern lead seals also use materials such as aluminum, iron, and plastic to improve environmental protection and safety. Each lead seal usually has a number that is used to track and verify the use of the lead seal. There are many types of lead seals, among which steel wire seals are often used for information management of business links such as meter inspection, meter installation and power connection, meter reading, electricity inspection, and electricity inspection.

[0003] like Fig. 9 and Fig.10 As shown, in the prior art, when sealing, one end of the sealing rope is placed in the first sealing groove (1), and the other end is pulled out through the first through hole (2), and then the button rod (3) is inserted into the rod groove in the first sealing groove (1), and the sealing rope is squeezed tightly by the side wall of the button head (5) and the cushion block (6), and the first button is fixed by the friction between the sealing rope and the side wall and the cushion block.

[0004] However, during use of this structure, the button is easy to rotate, so that the button is easy to loosen and fall off, making the lead seal easily ineffective. Utility Model Content

[0005] The utility model aims to provide a fool-proof structure for installing a seal of a three-phase meter to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A fool-proof structure for installing a seal of a three-phase meter comprises a three-phase meter case, a second lead seal groove and a second button, wherein the second lead seal groove is arranged on the three-phase meter case; a rod groove is arranged at the bottom end of the second lead seal groove, a semicircular arc limit block is fixedly connected to the bottom end of the second lead seal groove, and a rope threading opening is arranged above the semicircular arc limit block in the second lead seal groove, and the rope threading opening passes through the three-phase meter case; the second button comprises a button plate and an insertion rod, and a first limit block and a second limit block are symmetrically fixed at the lower end of the button plate; a threading groove is arranged at the top block of the button plate, a threading hole is arranged at one side of the first limit block, the threading hole is communicated with the threading groove, and a threading head is fixed at the end of the upper end of the button plate away from the threading hole.

[0008] When sealing the electric meter, insert the rod into the slot. At this time, pay attention that the straight line formed by the two ends of the first limit block and the second limit block and the line between the two ends of the semicircular limit block should be kept vertical, so that the button is in a pre-positioned state. At this time, press the second button. The first limit block and the second limit block cannot drop under the limit of the semicircular limit block. Then, pass the sealing wire on the threading head on the button plate through the threading hole on the first limit block and then through the inner wall of the second seal groove, so as to pull the sealing wire out of the three-phase meter case. Then turn the second button so that the straight line formed by the two ends of the first limit block and the second limit block are in contact with the semicircular limit block. The connecting line between the two ends is in a parallel state, so that the first limit block and the second limit block are in the remaining semicircle of the second lead sealing groove. At this time, the lead sealing line will rotate with the second button so that a part of it will be between the second lead sealing groove and the side wall of the button, and at this time, the first limit block and the second limit block will not be blocked by the semicircular limit block. The second button is pressed downward so that the second button is pressed into the second lead sealing groove as a whole, and is locked by the friction force between the lead sealing line, the second lead sealing groove and the button. At this time, under the limitation of the semicircular arc limit block, the first limit block and the second limit block cannot rotate, so that the second button will not be easily dislodged, thereby improving the lead sealing effect.

[0009] A further improvement of the technical solution of the utility model is that the first limit block and the second limit block are in the shape of a triangular cone, and the first limit block, the second limit block and the semi-arc limit block are all rounded.

[0010] By adopting the above technical solution, the rounded corners are processed so that the first limit block and the second limit block can be more easily inserted into the second lead sealing groove when the second button is pressed.

[0011] A further improvement of the technical solution of the utility model is that: a wire pressing groove is provided on the wire threading groove, a wire hole block is fixedly provided on the side of the wire pressing groove away from the wire threading head, and a through hole is provided on the wire hole block.

[0012] The above technical solution is adopted. In this solution, a wire pressing groove is set. When sealing, the sealing wire passes through the perforation on the wire hole block, and then the sealing wire in the second sealing groove is pressed into the second sealing groove, which not only improves the appearance but also prevents the sealing wire from being easily picked out.

[0013] A further improvement of the technical solution of the utility model is that: fastening grooves are opened on the sides of the first limiting block and the second limiting block, and a fastening strip is welded on the side wall of the second lead sealing groove.

[0014] The above technical solution is adopted. By setting a fastening groove, when the second button is rotated, the lead sealing line will enter the fastening groove through the fastening groove. When the button is pressed, the friction force is improved through the cooperation between the fastening strip and the fastening groove, and the cooperation between the fastening strip and the fastening groove makes it more difficult for the button to fall out.

[0015] A further improvement of the technical solution of the utility model is that a first annular stopper is fixed at the bottom end of the rod groove, a slide groove is symmetrically arranged at the bottom end of the insertion rod, a spring is fixed inside the slide groove, a slide rod is slidably arranged inside the slide groove, and one end of the slide rod is fixedly connected to the spring.

[0016] The above technical solution is adopted. In this solution, a first annular stopper is provided. When the second button is fully inserted into the second lead sealing groove, an inclined surface is provided at the bottom end of the slide rod. When it descends to the upper end of the first annular stopper and passes through the inclined surface and is pressed again, the spring will be forced to contract so that the slide rod will contract into the slide groove. When it descends to the bottom end of the first annular stopper, the spring rebounds and drives the slide rod to pop out, thereby achieving locking, preventing the button from being pulled out, and improving the lead sealing effect.

[0017] A further improvement of the technical solution of the utility model is that: preferably, limiting grooves are symmetrically provided on the first annular stopper; a second annular stopper is fixedly provided on the upper end of the first annular stopper, the outer ring diameter of the second annular stopper is consistent with that of the first annular stopper, and the inner ring diameter is smaller than the diameter of the first annular stopper.

[0018] The above technical solution is adopted, in which a limiting groove is provided on the first annular stopper. When the button is fully pressed into the second lead sealing groove, the slide rod is in the slide groove. At this time, the first annular stopper cannot play the role in Example 2, but the slide rod can prevent the button from rotating in the limiting groove, thereby improving the lead sealing effect; and by setting the second annular stopper, the role of preventing the button from being pulled out is played again.

[0019] A further improvement of the technical solution of the utility model is that: a spring sheet is fixedly provided on one side of the first limit block and the second limit block, and corresponding slots are provided at both ends of the semi-arc limit block.

[0020] The above-mentioned technical solution is adopted. In this embodiment, by setting a spring sheet, when the second button is pressed down, the spring sheet will first be squeezed by the semicircular arc limit block and shrink. When the first limit block and the second limit block are pressed into the bottom end of the second lead sealing groove, a slot is provided on one side of the semicircular arc limit block, and the spring sheet rebounds and is inserted into the slot, which can improve the anti-rotation effect and anti-pulling effect of the structure.

[0021] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0022] 1. The utility model provides a fool-proof structure for installing a seal of a three-phase meter. When the meter is sealed, the insertion rod is inserted into the slot, and the button is in a pre-positioned state. At this time, the second button is pressed, and then the sealing wire on the threading head on the button plate is passed through the wire hole on the first limit block and then through the inner wall of the second seal groove, so that the sealing wire is pulled out of the three-phase meter case, and the second button is rotated so that the first limit block and the second limit block are located at the remaining semicircle of the second seal groove. At this time, the sealing wire will rotate with the second button so that a part of it will be located between the second seal groove and the side wall of the button, and the second button is pressed downward so that the second button is pressed into the second seal groove as a whole, and is locked by the friction force between the sealing wire, the second seal groove and the button. At this time, under the limitation of the semicircular arc limit block, the first limit block and the second limit block cannot rotate, so that the second button will not be easily dislodged, thereby improving the sealing effect.

[0023] 2. The utility model provides a fool-proof structure for installing a seal of a three-phase meter. By setting a fastening groove, when the second button is rotated, the lead seal wire will enter the fastening groove through the fastening groove. When the button is pressed, the friction force is improved through the cooperation between the fastening strip and the fastening groove, and the cooperation between the fastening strip and the fastening groove makes it more difficult for the button to fall out.

[0024] 3. The utility model provides a fool-proof structure for installing a seal of a three-phase meter. By arranging a spring piece, when the second button is pressed down, the spring piece is first squeezed by the semicircular arc limit block and shrinks. When the first limit block and the second limit block are pressed into the bottom end of the second lead seal groove, a slot is provided on one side of the semicircular arc limit block, and the spring piece rebounds and is inserted into the slot, which can improve the anti-rotation effect and anti-pulling effect of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 This is a schematic diagram of the first structure of the three-phase meter case of the utility model;

[0027] Figure 2 It is a schematic diagram of the cross-sectional structure of the three-phase meter case of the utility model;

[0028] Figure 3 This is a schematic diagram of the overall structure of the second button of the utility model;

[0029] Figure 4 This is a side view structural diagram of the second button of the utility model;

[0030] Figure 5 It is a schematic diagram of the top view structure of the utility model;

[0031] Figure 6 It is a schematic diagram of the enlarged structure of point A of the utility model;

[0032] Figure 7 This is a schematic diagram of the second structure of the three-phase meter case of the utility model;

[0033] Figure 8 It is a schematic diagram of the enlarged structure of B of the utility model;

[0034] Fig. 9 It is a schematic diagram of the existing three-phase box structure of the utility model;

[0035] Fig.10 This is a schematic diagram of the existing button structure of the utility model;

[0036] Fig.11 It is a schematic diagram of the enlarged structure of the C position of the utility model;

[0037] In the figure: 1, first lead seal groove; 2, first through hole; 3, button rod; 4, rod groove; 5, button head; 6, cushion block; 7, three-phase case; 8, second lead seal groove; 9, second button; 10, semicircular arc limit block; 11, rope threading hole; 12, button plate; 13, plug rod; 14, first limit block; 15, second limit block; 16, threading hole; 17, threading groove; 18, threading head; 19, fastening groove; 20, fastening strip; 21, first annular block; 22, limit groove; 23, second annular block; 24, spring; 25, slide rod; 26, spring piece; 27, slot; 28, wire pressing groove; 29, wire hole block. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with the embodiments:

[0039] Example 1

[0040] like Figure 1-11 As shown, the utility model provides a fool-proof structure for installing a seal of a three-phase meter, comprising a three-phase meter case 7, a second lead sealing groove 8 and a second button 9, wherein the second lead sealing groove 8 is provided on the three-phase meter case 7; a rod groove 4 is provided at the bottom end of the second lead sealing groove 8, a semicircular arc limit block 10 is fixedly connected to the bottom end of the second lead sealing groove 8, and a rope threading opening 11 is provided on the second lead sealing groove 8 above the semicircular arc limit block 10, and the rope threading opening 11 passes through the three-phase meter case 7; the second button 9 comprises a button plate 12 and a plug rod 13, and a first limit block 14 and a second limit block 15 are symmetrically fixed at the lower end of the button plate 12; a threading groove 17 is provided on the top block of the button plate 12, a threading hole 16 is provided on one side of the first limit block 14, and the threading hole 16 is communicated with the threading groove 17, and a threading head 18 is fixed at one end of the upper end of the button plate 12 away from the threading hole 16.

[0041] In this embodiment, when the electric meter is sealed, the rod 13 is inserted into the slot 27. At this time, it should be noted that the straight line formed by the two ends of the first limit block 14 and the second limit block 15 and the line between the two ends of the semicircular limit block should be kept vertical, so that the button is in a pre-positioned state. At this time, the second button 9 is pressed, and the first limit block 14 and the second limit block 15 cannot drop under the limit of the semicircular limit block 10. Then, the sealing wire on the threading head 18 on the button plate 12 is passed through the threading hole 16 on the first limit block 14 and then through the inner wall of the second seal groove 8, so that the sealing wire is pulled out of the three-phase meter case 7, and then the second button 9 is rotated so that the straight line formed by the two ends of the first limit block 14 and the second limit block 15 is connected. The straight line is parallel to the line connecting the two ends of the semicircular limit block, so that the first limit block 14 and the second limit block 15 are located at the remaining semicircle of the second lead sealing groove 8. At this time, the lead sealing line will rotate with the second button 9 so that a part of it will be located between the second lead sealing groove 8 and the side wall of the button, and at this time, the first limit block 14 and the second limit block 15 will not be blocked by the semicircular limit block, and the second button 9 is pressed downward so that the second button 9 is pressed into the second lead sealing groove 8 as a whole, and is locked by the friction force between the lead sealing line and the second lead sealing groove 8 and the button. At this time, under the limitation of the semicircular arc limit block 10, the first limit block 14 and the second limit block 15 cannot rotate, so that the second button 9 will not be easily dislodged, thereby improving the lead sealing effect.

[0042] like Figure 3 As shown, in this embodiment, preferably, the first limit block 14 and the second limit block 15 are in the shape of triangular cones, and the first limit block 14, the second limit block 15 and the semi-arc limit block are all rounded.

[0043] Through the rounded corner treatment, when the second button 9 is pressed, the first limiting block 14 and the second limiting block 15 are more easily inserted into the second lead sealing groove 8 .

[0044] like Figure 5 As shown, preferably, a wire pressing groove 28 is provided on the wire threading groove 17, and a wire hole block 29 is fixedly provided on the wire pressing groove 28 at a side away from the wire threading head 18, and a through hole is provided on the wire hole block 29.

[0045] By providing the wire pressing groove 28, the sealing wire passes through the perforation on the wire hole block 29 during lead sealing, and then the sealing wire in the second sealing groove 8 is pressed into the second sealing groove 8, which not only improves the appearance but also prevents the sealing wire from being easily picked out.

[0046] A fastening groove 19 is formed on the side surfaces of the first limiting block 14 and the second limiting block 15 , and a fastening strip 20 is welded on the side wall of the second lead sealing groove 8 .

[0047] By providing the fastening groove 19, when the second button 9 is rotated, the lead sealing wire will enter the fastening groove 19 through the fastening groove 19. When the button is pressed, the friction force is increased through the cooperation between the fastening strip 20 and the fastening groove 19, and the cooperation between the fastening strip 20 and the fastening groove 19 makes it more difficult for the button to fall out.

[0048] Example 2

[0049] like Figure 2 and Fig.11 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, a first annular stopper 21 is fixed to the bottom end of the rod groove 4, a slide groove is symmetrically provided at the bottom end of the insertion rod 13, a spring 24 is fixed inside the slide groove, a slide rod 25 is slidably provided inside the slide groove, and one end of the slide rod 25 is fixedly connected to the spring 24.

[0050] In this embodiment, by providing the first annular stopper 21, when the second button 9 is fully inserted into the second lead sealing groove 8, the bottom end of the slide rod 25 is provided with an inclined surface. When it descends to the upper end of the first annular stopper 21, passes through the inclined surface, and is pressed again, the spring 24 will be forced to contract so that the slide rod 25 contracts into the slide groove. When it descends to the bottom end of the first annular stopper 21, the spring 24 rebounds and drives the slide rod 25 to pop out, thereby achieving locking, preventing the button from being pulled out, and improving the lead sealing effect.

[0051] Example 3

[0052] like Figure 3 As shown, based on Example 2, the utility model provides a technical solution: preferably, a limiting groove 22 is symmetrically provided on the first annular stopper 21; a second annular stopper 23 is fixedly provided on the upper end of the first annular stopper 21, and the outer circle diameter of the second annular stopper 23 is consistent with that of the first annular stopper 21, and the inner circle diameter is smaller than the diameter of the first annular stopper 21.

[0053] The first annular stopper 21 is provided with a limiting groove 22. When the button is fully pressed into the second sealing groove 8, the slide bar 25 is in the slide groove. At this time, the first annular stopper 21 cannot play the role in Embodiment 2, but the slide bar 25 in the limiting groove 22 can prevent the button from rotating, thereby improving the sealing effect. In addition, by providing the second annular stopper 23, the button can be prevented from being pulled out again.

[0054] Example 4

[0055] like Figure 4 and Figure 8 As shown, based on Example 1, the utility model provides a technical solution: preferably, a spring piece 26 is fixedly provided on one side of the first limit block 14 and the second limit block 15, and corresponding slots 27 are opened at both ends of the semi-arc limit block.

[0056] In this embodiment, by providing a spring piece 26, when the second button 9 is pressed down, the spring piece 26 is first squeezed by the semicircular limit block 10 and shrinks. When the first limit block 14 and the second limit block 15 are pressed into the bottom end of the second lead sealing groove 8, a slot 27 is provided on one side of the semicircular limit block 10, and the spring piece 26 rebounds and is inserted into the slot 27, which can improve the anti-rotation effect and anti-pulling effect of the structure.

[0057] The following is a detailed description of the working principle of the fool-proof structure for the seal installation of the three-phase meter.

[0058] like Figure 1-11 As shown, when the electric meter is sealed, the rod 13 is inserted into the slot 27. At this time, it should be noted that the straight line formed by the two ends of the first limit block 14 and the second limit block 15 and the line between the two ends of the semicircular limit block should be kept vertical, so that the button is in a pre-positioned state. At this time, the second button 9 is pressed, and the first limit block 14 and the second limit block 15 cannot drop under the limit of the semicircular limit block 10. Then, the sealing line on the threading head 18 on the button plate 12 is passed through the threading hole 16 on the first limit block 14 and then through the inner wall of the second seal groove 8, so that the sealing line is pulled out of the three-phase meter case 7, and then the second button 9 is rotated so that the straight line formed by the two ends of the first limit block 14 and the second limit block 15 is The connecting line between the two ends of the semicircular limit block is in a parallel state, so that the first limit block 14 and the second limit block 15 are located at the remaining semicircle of the second lead sealing groove 8. At this time, the lead sealing line will rotate with the second button 9 so that a part of it will be located between the second lead sealing groove 8 and the side wall of the button, and at this time, the first limit block 14 and the second limit block 15 will not be blocked by the semicircular limit block, and the second button 9 is pressed downward so that the second button 9 is pressed into the second lead sealing groove 8 as a whole, and is locked by the friction force between the lead sealing line and the second lead sealing groove 8 and the button. At this time, under the limitation of the semicircular arc limit block 10, the first limit block 14 and the second limit block 15 cannot rotate, so that the second button 9 will not be easily dislodged, thereby improving the lead sealing effect.

[0059] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A foolproof structure for sealing a three-phase meter, comprising a three-phase meter case (7), a second lead sealing groove (8) and a second button (9), wherein the second lead sealing groove (8) is provided on the three-phase meter case (7); characterized in that: The bottom end of the second lead sealing groove (8) is provided with a rod groove (4), the bottom end of the second lead sealing groove (8) is fixedly connected with a semicircular arc limit block (10), and the second lead sealing groove (8) is provided with a rope threading opening (11) located above the semicircular arc limit block (10), and the rope threading opening (11) passes through the three-phase meter case (7); the second button (9) comprises a button plate (12) and an insertion rod (13), and the lower end of the button plate (12) is symmetrically fixed with a first limit block (14) and a second limit block (15); the top block of the button plate (12) is provided with a threading groove (17), and one side of the first limit block (14) is provided with a threading hole (16), the threading hole (16) and the threading groove (17) are communicated, and a threading head (18) is fixedly provided at one end of the upper end of the button plate (12) away from the threading hole (16).

2. A foolproof structure for sealing installation of a three-phase meter according to claim 1, characterized in that: The first limiting block (14) and the second limiting block (15) are in the shape of triangular cones, and the first limiting block (14), the second limiting block (15) and the semi-arc limiting block are all rounded.

3. A foolproof structure for sealing installation of a three-phase meter according to claim 2, characterized in that: A first annular stopper (21) is fixed at the bottom end of the rod groove (4), a slide groove is symmetrically arranged at the bottom end of the insertion rod (13), a spring (24) is fixedly arranged inside the slide groove, a slide rod (25) is slidably arranged inside the slide groove, and one end of the slide rod (25) is fixedly connected to the spring (24).

4. A foolproof structure for sealing installation of a three-phase meter according to claim 3, characterized in that: The first annular stopper (21) is symmetrically provided with limiting grooves (22); a second annular stopper (23) is fixedly provided on the upper end of the first annular stopper (21); the outer diameter of the second annular stopper (23) is consistent with that of the first annular stopper (21), and the inner diameter is smaller than that of the first annular stopper (21).

5. A foolproof structure for sealing installation of a three-phase meter according to claim 3, characterized in that: A spring sheet (26) is fixedly provided on one side of the first limit block (14), and corresponding slots (27) are provided at both ends of the semi-arc limit block.

6. A foolproof structure for sealing installation of a three-phase meter according to claim 4 or 5, characterized in that: A fastening groove (19) is provided on the side surfaces of the first limiting block (14) and the second limiting block (15), and a fastening strip (20) is welded on the side wall of the second lead sealing groove (8).

7. A foolproof structure for sealing installation of a three-phase meter according to claim 6, characterized in that: The threading groove (17) A wire pressing groove (28) is provided on the top, and a wire hole block (29) is fixedly provided on the wire pressing groove (28) at a side away from the threading head (18). The line hole block (29) is provided with a perforation.

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