Tripping mechanism for surge protection device

Abstract

The utility model discloses a tripping mechanism used for a surge protection device, comprising a tripping mechanism body and an insulation interrupting sleeve installed in the tripping mechanism body, the upper end of the insulation interrupting sleeve is fixedly connected with a vertically arranged connecting rod, the inner side wall of the tripping mechanism body is fixedly connected with a longitudinally arranged limiting column, and the limiting column is fixedly connected with a connecting rod. The limiting column is located on the upper right portion in the tripping mechanism body, a semicircular buffer plate is arranged on the left side of the limiting column, a plurality of rubber rods are fixedly connected between the buffer plate and the limiting column, the rubber rods are sleeved with springs, and the two ends of each spring are fixedly connected with the buffer plate and the limiting column respectively. According to the utility model, the tripping mechanism of the surge protection device is improved and optimized, good limiting and buffering energy absorption operation can be realized during triggering, damage caused by rigid collision is avoided, and the safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tripping mechanism technical field, especially for a kind of tripping mechanism for surge protector. BACKGROUND

[0002] The tripping mechanism of surge protector is a key component, its main role is when surge protector (SPD) appears fault or suffers excessive current impact, rapidly disconnects SPD with distribution system, to prevent SPD from catching fire or causing greater electrical system damage.

[0003] The utility model discloses a tripping mechanism of surge protector, including: shell, the inner chamber of the shell is fixedly installed for arc extinguishing arc extinguishing block, fixed column and limit stop post, the fixed column is placed in the middle position of the inner chamber of the shell …Can directly drive arc extinguishing plate to shift, and the speed of interruption is fast, through the joint action of arc extinguishing plate and arc extinguishing block, the interruption effect is good, more safe, and structural component is simple, and the space is small, solves the situation that spring component is not fixed in the displacement route when stretching, possibly swing;

[0004] Although the prior art has the above advantages, but the tripping mechanism of surge protector is triggered (arc extinguishing effect), is through torsional spring and drives insulating interrupter sleeve and third electrode rotation to carry out arc extinguishing operation, and third contact point will produce rigid collision between arc extinguishing block, there is damaged security risk, although limit buffer block cooperates limit stop post and plays certain limiting effect, but the energy-absorbing effect is poor, for this, tripping mechanism for surge protector is improved and optimized. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problems in the above background art, and provides a kind of tripping mechanism for surge protector.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme:

[0007] A kind of tripping mechanism for surge protector, including tripping mechanism body and the insulating interrupter sleeve installed in it, the upper end of the insulating interrupter sleeve is fixedly connected with the connection rod of vertical arrangement, the inner side wall of the tripping mechanism body is fixedly connected with the limit post of longitudinal arrangement, the limit post is located in the upper right in tripping mechanism body, the left side of the limit post is equipped with the buffer plate of semicircular arrangement, a plurality of rubber rods are fixedly connected between the buffer plate and limit post, spring is sleeved on the rubber rod, the both ends of the spring are fixedly connected with buffer plate and limit post respectively.

[0008] Preferably, the right side of the limiting column is fixedly connected with a transversely arranged fixed rod, and the right end of the fixed rod is fixedly connected with the inner side wall of the tripping mechanism body.

[0009] Preferably, the two ends of the fixed rod are both fixedly sleeved with a second fixed ring, and one side of the two second fixed rings is respectively fixedly connected with the outer side wall of the limiting column and the inner side wall of the tripping mechanism body.

[0010] Preferably, the lower end of the connecting rod is fixedly sleeved with a first fixed ring, and the lower end of the first fixed ring is fixedly connected with the upper end of the insulation breaking sleeve.

[0011] Preferably, a rubber sleeve is fixedly sleeved on the connecting rod.

[0012] Preferably, a rubber pad is fixedly connected to the left side of the buffer plate.

[0013] Compared with the prior art, the utility model has the advantages of the following beneficial effects:

[0014] In the utility model, the connecting rod, the limiting column, the buffer plate, the spring and the rubber rod are arranged, so that when the insulation breaking sleeve is triggered during rotation, the arc extinguishing operation can play a buffering and energy absorption role, thereby avoiding rigid collision between the third contact and the arc extinguishing block in the arc extinguishing mechanism, and the safety is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 A structure schematic view of the tripping mechanism for the surge protector is provided for the utility model;

[0016] Fig. 2 A partial enlarged structure schematic view of the tripping mechanism for the surge protector is provided for the utility model;

[0017] Fig. 3 A structure schematic view of the tripping mechanism for the surge protector after triggering is provided for the utility model.

[0018] In the drawings: 1-tripping mechanism body, 2-insulation breaking sleeve, 3-connecting rod, 4-rubber sleeve, 5-first fixed ring, 6-buffer plate, 7-limiting column, 8-fixed rod, 9-second fixed ring, 10-rubber rod, 11-spring, 12-rubber pad. DETAILED DESCRIPTION

[0019] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments.

[0020] Referring to Figs. 1-3 A kind of tripping mechanism for surge protector, including tripping mechanism body 1 and the insulation breaking cover 2 being installed in it, the upper end of insulation breaking cover 2 is fixedly connected with the vertically arranged connecting rod 3, for cooperating with limiting post 7 limit the rotating stroke of insulation breaking cover 2, the lower end of connecting rod 3 is fixedly provided with first fixed ring 5, for improving the firmness of connecting rod 3, the lower end of first fixed ring 5 is fixedly connected with the upper end of insulation breaking cover 2, connecting rod 3 is fixedly provided with rubber sleeve 4, for preventing the outside wall of connecting rod 3 from being abraded;

[0021] In the embodiment, the inner side wall of tripping mechanism body 1 is fixedly connected with the vertically arranged limiting post 7, for limiting the rotating position of connecting rod 3, the right side of limiting post 7 is fixedly connected with the horizontally arranged fixed rod 8, for supporting limiting post 7, the right end of fixed rod 8 is fixedly connected with the inner side wall of tripping mechanism body 1, both ends of fixed rod 8 are fixedly provided with second fixed ring 9, for improving the firmness of fixed rod 8, one side of two second fixed rings 9 is respectively fixedly connected with the outer side wall of limiting post 7 and the inner side wall of tripping mechanism body 1;

[0022] In the embodiment, the right upper side of tripping mechanism body 1 is located in the right upper side of tripping mechanism body 1, the left side of limiting post 7 is provided with the semicircularly arranged buffer plate 6, for compressing spring 11, the left side of buffer plate 6 is fixedly connected with rubber pad 12, for preventing the outer wall of buffer plate 6 from being abraded, a plurality of rubber rods 10 are fixedly connected between buffer plate 6 and limiting post 7, for cooperating with spring 11 to play a buffering energy-absorbing role, spring 11 is sleeved on rubber rod 10, for cooperating with rubber rod 10 to play a buffering energy-absorbing role, both ends of spring 11 are respectively fixedly connected with buffer plate 6 and limiting post 7.

[0023] In the embodiment, when tripping mechanism body 1 is triggered to cause insulation breaking cover 2 to rotate, connecting rod 3 is rotated by insulation breaking cover 2, when connecting rod 3 abuts against buffer plate 6, spring 11 is compressed by buffer plate 6, spring 11 cooperates with rubber rod 10 to play a buffering energy-absorbing role, so as to avoid rigid collision between third electrode on insulation breaking cover 2 and arc-extinguishing block, prevent third electrode from being damaged due to rigid collision, thereby improving safety, (the principle of tripping mechanism body 1 has been disclosed in the prior art, when there is a surge impact in the circuit, a larger heat will be generated for a short time, the solder at the fourth contact and the second contact melts, at this time, the torsion spring immediately acts, and simultaneously drives the insulation breaking cover and the third electrode to rotate).

[0024] The above-mentioned tripping mechanism body, insulation breaking sleeve, third contact and arc extinguishing block are disclosed in the comparative document or are existing mature technologies, and the working principles and internal structures thereof are known to those skilled in the art, and the application only utilizes the functions thereof without improving the internal structures, so no detailed description is made herein;

[0025] The above-mentioned is only a preferred specific implementation manner of the application, but the protection scope of the application is not limited to this, and any skilled person in the art can make equivalent replacement or change according to the technical scheme and the application concept of the application within the technical range disclosed by the application, which should be covered in the protection scope of the application.

Claims

1. A tripping mechanism for a surge protector comprising a tripping mechanism body (1) and an insulating breaking sleeve (2) mounted therein, characterized in that: The upper end of the insulating cutout sleeve (2) is fixedly connected with a vertically arranged connecting rod (3), the inner side wall of the tripping mechanism body (1) is fixedly connected with a longitudinally arranged limiting column (7), the limiting column (7) is located at the upper right in the tripping mechanism body (1), the left side of the limiting column (7) is provided with a semicircular buffer plate (6), a plurality of rubber rods (10) are fixedly connected between the buffer plate (6) and the limiting column (7), a spring (11) is sleeved on the rubber rod (10), and the two ends of the spring (11) are fixedly connected with the buffer plate (6) and the limiting column (7) respectively.

2. A tripping mechanism for a surge protector according to claim 1, wherein: The right side of the limiting column (7) is fixedly connected with a transversely arranged fixed rod (8), and the right end of the fixed rod (8) is fixedly connected with the inner side wall of the tripping mechanism body (1).

3. A tripping mechanism for a surge protector according to claim 2, wherein: The two ends of the fixed rod (8) are fixedly sleeved with second fixed rings (9), and one side of the two second fixed rings (9) is fixedly connected with the outer side wall of the limiting column (7) and the inner side wall of the tripping mechanism body (1) respectively.

4. A tripping mechanism for a surge protector according to claim 1, wherein: The lower end of the connecting rod (3) is fixedly sleeved with a first fixed ring (5), and the lower end of the first fixed ring (5) is fixedly connected with the upper end of the insulating cutout sleeve (2).

5. A tripping mechanism for a surge protector according to claim 1, wherein: A rubber sleeve (4) is fixedly sleeved on the connecting rod (3).

6. A tripping mechanism for a surge protector according to claim 1, wherein: The left side of the buffer plate (6) is fixedly connected with a rubber pad (12).

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