Backup protection breaker easy to break and separate and surge protector

Abstract

The utility model relates to the field of surge protector equipment, in particular to a backup protection breaker easy to break and separate and a surge protector. The backup protection breaker easy to break and separate provided by the utility model is used for backup protection of a surge protector body, and comprises a spacing structure, a first release piece and a moving part, the spacing structure can be matched with the moving part to realize circuit conduction, and the first release piece can be matched with the moving part to enable the moving part to be matched with the spacing structure. The first release part can be separated from the moving part according to a current signal of the circuit so that the moving part can be separated from the spacing structure, the matching direction of the first release part and the moving part is a first direction, the matching direction of the moving part and the spacing structure is a second direction, and the first direction is perpendicular to the second direction.

Description

Technical Field

[0001] The utility model relates to the field of surge protector equipment, in particular to a backup protection breaker and a surge protector which are easy to disconnect and detach. Background Art

[0002] The function of a surge protector is to protect the lines it is connected to. Surge protectors are used in power circuits or communication lines. The principle is to use an internal varistor to conduct and shunt the impact current, thereby preventing the impact current from damaging the equipment on the power circuit or communication line. In order to achieve backup protection for the surge protector body, a breaker solution with controllable breaking conditions is now available. Unlike the fuse-type breaking structure in the traditional solution, the breaker solution with controllable breaking conditions has a release mechanism. A breaking structure is provided on the circuit where lightning protection elements such as varistors are located. The conduction and disconnection of the breaking structure are achieved by the movement of the moving part. When the moving part is located on the circuit, the circuit is conducted through the connection of the moving part. When the moving part is separated from the circuit, the circuit is disconnected. The movement of the moving part is controlled by the release mechanism and the spring. The general release structure has a hook body and an electromagnetic release. The moving part is provided with a slot, and the hook body extends into the slot and contacts the moving part. The cooperation of the moving part enables the moving part to overcome the elastic force of the spring and maintain the position connected to the circuit. The hook body is driven by the electromagnetic release and disengages from the moving part by rotation. The displacement trajectory of the hook body during the rotation process has both a partial displacement consistent with the moving direction of the moving part and a partial displacement perpendicular to the moving direction of the moving part. The partial displacement consistent with the moving direction of the moving part causes the moving part to move under the action of the spring when the hook body is not completely disengaged from the moving part, which in turn causes the moving part to have a possibility of secondary contact with the hook body. The angle and position of the secondary contact may cause the moving part and the hook body to be stuck, making it impossible for the moving part to be disengaged from the circuit. Utility Model Content

[0003] On the one hand, the utility model provides a backup protection breaker that is easy to disconnect and disengage, which can avoid the situation where the first release member and the moving part are stuck and cannot be disengaged;

[0004] On the other hand, the utility model provides a surge protector.

[0005] The utility model provides a backup protection breaker that is easy to disconnect and detach, which is used for backup protection of a surge protector body, and includes a spacing structure, a first releasing member and a moving part. The spacing structure can cooperate with the moving part to achieve circuit conduction, the first releasing member can cooperate with the moving part to make the moving part cooperate with the spacing structure, the first releasing member can be disengaged from the moving part according to the current signal of the circuit to separate the moving part from the spacing structure, the cooperation direction of the first releasing member and the moving part is a first direction, the cooperation direction of the moving part and the spacing structure is a second direction, and the first direction is perpendicular to the second direction.

[0006] Furthermore, the moving portion is provided with a first clamping groove, and the first releasing member is slidably matched with the first clamping groove along a first direction.

[0007] Furthermore, the backup protection disconnector that is easy to disconnect and detach also includes a second release piece and a disengagement spring, the disengagement spring cooperates with the first release piece to enable the first release piece to disengage from the first clamping groove, the second release piece can cooperate with the first release piece to enable the first release piece to remain engaged with the first clamping groove, and the cooperation direction of the second release piece and the first release piece is a second direction.

[0008] Furthermore, the backup protection breaker that is easy to disconnect and detach also includes a current transformer and an electromagnetic release. The current transformer cooperates with the spacing structure, the electromagnetic release cooperates with the second release piece, and the second release piece cooperates with the first release piece, so that the second release piece can be detached from the first release piece.

[0009] Furthermore, the spacing structure includes a first section and a second section, a groove body is formed between the first section and the second section, the first section has a first contact surface facing the groove body, the second section has a second contact surface facing the groove body, the movable part is located between the first contact surface and the second contact surface, and the movable part is provided with a first fitting part and a second fitting part, the first fitting part is in contact with the first contact surface, and the second fitting part is in contact with the second contact surface.

[0010] Furthermore, the first contact surface and the second contact surface are both parallel to the second direction.

[0011] Furthermore, the first contact surface and the second contact surface are parallel.

[0012] Furthermore, a third spring is provided between the first fitting portion and the second fitting portion, and the first fitting portion is pressed against the first contact surface through the third spring, and the second fitting portion is pressed against the second contact surface through the third spring.

[0013] Further, the first release member is provided with a second snap-fitting groove, and the second release member can cooperate with the second snap-fitting groove along the second direction; or the second release member is provided with a second snap-fitting groove, and the first release member can cooperate with the second snap-fitting groove along the second direction.

[0014] The surge protector provided by the utility model comprises a lightning protection element, wherein the backup protection breaker which is easy to disconnect and detach as described in any one of the above items and the lightning protection element are arranged in series.

[0015] Beneficial Effects

[0016] The moving part in the present scheme can move along the second direction, and the first release member cooperates with the moving part along the first direction, so as to limit the moving part from moving along the second direction to being separated from the spacing structure. The spacing structure is located on the lightning protection element loop where the surge protector body is located. Since the cooperation direction of the first release member and the moving part, i.e. the first direction, is always perpendicular to the moving direction of the moving part, i.e. the second direction, it can be ensured that before the first release member moves to be separated from the moving part, there is no displacement of the first release member in the second direction. Therefore, before the first release member is separated from the moving part, there is no movement of the moving part along the first direction, so as to avoid secondary cooperation between the first release member and the moving part in the process of their respective movements, thereby causing the cooperation to be stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the cooperation between the first release member and the moving part of the backup protection breaker that is easy to disconnect and detach provided by an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the overall structure of a backup protection breaker that is easy to disconnect and detach provided by an embodiment of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the interval structure of the backup protection breaker that is easy to disconnect and detach provided by an embodiment of the utility model.

[0021] Figure numbers: 1-moving part; 2-moving spring; 3-second releasing piece; 4-first releasing piece; 5-disengagement spring; 6-spacer structure; 7-current transformer; 8-electromagnetic release; 9-first section; 10-second section; 11-first contact surface; 12-second contact surface; 13-first fitting part; 14-second fitting part. DETAILED DESCRIPTION

[0022] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0023] Example

[0024] like Figures 1 to 3 A backup protection breaker that is easy to disconnect and detach is shown, including a spacing structure 6, a first release piece 4 and a moving part 1. The spacing structure 6 can cooperate with the moving part 1 to achieve circuit conduction. The first release piece 4 can cooperate with the moving part 1 to make the moving part 1 cooperate with the spacing structure 6. The first release piece 4 can be disengaged from the moving part 1 according to the current signal of the circuit to separate the moving part 1 from the spacing structure 6. The cooperation direction of the first release piece 4 and the moving part 1 is a first direction, and the cooperation direction of the moving part 1 and the spacing structure 6 is a second direction. The first direction is perpendicular to the second direction.

[0025] In order to avoid the problem of jamming caused by the cooperation between the movable part 1 and the release member of the existing backup protection breaker with controllable breaking conditions and easy breaking and disengagement through the hook body, the hook body is not easy to disengage from the movable part 1 due to its stroke, the movable part 1 in the present scheme can move along the second direction, and the first release member 4 cooperates with the movable part 1 along the first direction, thereby limiting the movable part 1 from moving along the second direction until it is disengaged from the spacing structure 6, and the spacing structure 6 is located on the lightning protection element circuit where the surge protector body is located. Since the cooperation direction of the first release member 4 and the movable part 1, i.e. the first direction, is always perpendicular to the moving direction of the movable part 1, i.e. the second direction, it can be ensured that before the first release member 4 moves to disengage from the movable part 1, the first release member 4 does not have any displacement in the second direction. Therefore, before the first release member 4 disengages from the movable part 1, the movable part 1 does not move along the first direction, thereby avoiding the secondary cooperation between the first release member 4 and the movable part 1 during their respective movements, thereby causing the cooperation to be jammed.

[0026] In an optional embodiment, a first engaging groove is provided on the movable portion 1 , and the first releasing member 4 is slidably matched with the first engaging groove along a first direction.

[0027] The first release member 4 slides into the first engaging groove and cooperates with the first engaging groove to limit the moving part 1, that is, the first engaging groove extends along the first direction. When the first release member 4 is located in the first engaging groove, the inner wall of the first engaging groove abuts against the first release member 4, thereby playing a role of engaging along the second direction. Before the first release member 4 slides out of the first engaging groove, the first release member 4 does not have any displacement in the second direction. Therefore, before the first release member 4 is separated from the moving part 1, the moving part 1 does not move along the first direction. The elastic force for pushing the moving part 1 to separate from the spacing structure 6 remains constant, so that the friction resistance between the first release member 4 and the moving part 1 is constant. Therefore, it is only necessary to provide a force on the first release member 4 in the first direction, which can avoid the situation where the first release member 4 and the moving part 1 are stuck.

[0028] In an optional embodiment, the backup protection disconnector that is easy to disconnect and disengage also includes a second release piece 3 and a disengagement spring 5. The disengagement spring 5 cooperates with the first release piece 4 to enable the first release piece 4 to disengage from the first snap-in groove. The second release piece 3 can cooperate with the first release piece 4 to enable the first release piece 4 to remain engaged with the first snap-in groove. The cooperation direction of the second release piece 3 and the first release piece 4 is the second direction.

[0029] The first release member 4 is driven by the disengagement spring 5 to slide and disengage from the moving part 1. The second release member 3 is used to enable the first release member 4 to overcome the elastic force of the disengagement spring 5 and maintain the engaged state with the moving part 1, thereby realizing the constraint of the moving part 1 by the first release member 4. The moving part 1 needs to ensure that it can be separated from the lightning protection element circuit. Therefore, the force used to drive the moving part 1 is relatively large, which causes the pressure and friction resistance between the moving part 1 and the first release member 4 to be relatively large. If the first release member 4 is directly performed by the driving member, it is necessary to have high requirements on the structural strength and power of the movable mechanism of the driving member. This solution utilizes the second release member 3 and the disengagement spring 5 to control the position of the first release member 4. The friction resistance between the second release member 3 and the first release member 4 is relatively small. Therefore, the structural strength and power of the movable mechanism of the driving member can be reduced, thereby reducing the size of the driving member and the triggering conditions of the driving member, thereby improving the controllability of the disconnection conditions.

[0030] Preferably, a second snap-in groove is provided on the first release member 4, and the second release member 3 slides into the second snap-in groove and cooperates with the second snap-in groove to limit the first release member 4, that is, the second snap-in groove extends along the second direction. When the second release member 3 is located in the second snap-in groove, the inner wall of the second snap-in groove abuts against the second release member 3, thereby achieving snap-in along the first direction.

[0031] Since the mating direction of the first release member 4 and the moving part 1, i.e. the first direction, is always perpendicular to the moving direction of the second release member 3, i.e. the second direction, it can be ensured that before the second release member 3 slides to disengage from the first release member 4, the second release member 3 does not move in the first direction. Therefore, before the second release member 3 disengages from the first release member 4, the first release member 4 does not move along the second direction, and the elastic force of the disengagement spring 5 remains constant, so that the friction resistance between the second release member 3 and the first release member 4 is constant. Therefore, the driving member used to disengage the second release member 3 from the first release member 4 only needs to provide a force to the second release member 3 in the second direction, so as to avoid the situation where the mating between the second release member 3 and the first release member 4 is stuck.

[0032] In an optional embodiment, the backup protection breaker that is easy to disconnect and disengage also includes a current transformer 7 and an electromagnetic release 8, the current transformer 7 cooperates with the spacing structure 6, the electromagnetic release 8 cooperates with the second release piece 3, and the second release piece 3 cooperates with the first release piece 4, so that the second release piece 3 can be disengaged from the first release piece 4.

[0033] The electromagnetic release 8 is used to drive the second release member 3. The triggering of the action of the electromagnetic release 8 is controlled by the current signal of the lightning protection element circuit. The current transformer 7 can collect the current signal of the lightning protection element circuit. When the current flowing through the lightning protection element circuit reaches the rated value that triggers the action of the electromagnetic release 8, the electromagnetic release 8 pushes the second release member 3 to move along the second direction until it is disengaged from the first release member 4. The first release member 4 moves along the first direction under the action of the disengagement spring 5 until it is disengaged from the first clamping groove of the moving part 1. The moving part 1 moves to be disengaged from the lightning protection element circuit under the action of the moving spring 2.

[0034] In an optional embodiment, the spacing structure 6 includes a first section 9 and a second section 10, a groove body is formed between the first section 9 and the second section 10, the first section 9 has a first contact surface 11 facing the groove body, the second section 10 has a second contact surface 12 facing the groove body, the movable part 1 is located between the first contact surface 11 and the second contact surface 12, and the movable part 1 is provided with a first fitting part 13 and a second fitting part 14, the first fitting part 13 is in contact with the first contact surface 11, and the second fitting part 14 is in contact with the second contact surface 12.

[0035] The spacing structure 6 is located on the lightning protection element circuit. Specifically, the backup protection breaker that is easy to disconnect and detach is provided with two copper sheet conductive structures, the first section 9 and the second section 10. The first section 9 and the second section 10 are arranged at intervals along the first direction. A groove body is formed between the first contact surface 11 of the first section 9 and the second contact surface 12 of the second section 10. The movable part 1 is a conductive structure. The corresponding position of the movable part 1 is provided with a first fitting part 13 and a second fitting part 14. When the movable part 1 is located in the groove body, the first fitting part 13 contacts the first contact surface 11, and the second fitting part 14 contacts the second contact surface 12, thereby making the circuit between the first section 9 and the second section 10 conductive.

[0036] In an optional implementation, both the first contact surface 11 and the second contact surface 12 are parallel to the second direction.

[0037] In an optional embodiment, the first contact surface 11 and the second contact surface 12 are parallel.

[0038] In an optional embodiment, a third spring is provided between the first fitting portion 13 and the second fitting portion 14 , and the first fitting portion 13 is abutted against the first contact surface 11 through the third spring, and the second fitting portion 14 is abutted against the second contact surface 12 through the third spring.

[0039] A third spring is provided on the movable part 1, and the third spring is located between the first fitting part 13 and the second fitting part 14. There is a movable structure between the first fitting part 13 and the second fitting part 14, which can move along the first direction. When the movable part 1 is located in the groove body, the third spring is in a compressed state, so that the first fitting part 13 abuts against the first contact surface 11, and the second fitting part 14 abuts against the second contact surface 12, ensuring that the movable part 1 is in contact with the first section 9 and the second section 10 at the same time.

[0040] In an optional embodiment, a second snap-in groove is provided on the first release member 4, and the second release member 3 can cooperate with the second snap-in groove along the second direction; or a second snap-in groove is provided on the second release member 3, and the first release member 4 can cooperate with the second snap-in groove along the second direction.

[0041] The surge protector provided by the utility model comprises a lightning protection element, a backup protection breaker which is easy to be disconnected and separated and the lightning protection element are arranged in series.

[0042] It should be noted that any of the above embodiments is illustrative of the present invention rather than limiting the present invention, and that those skilled in the art may design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets should not be constructed as a limitation on the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the presence of multiple such elements. The present invention may be implemented by means of hardware comprising several different elements and by means of appropriately programmed computers. In a unit claim that lists several devices, several of these devices may be embodied by the same hardware item. The use of the words primary, secondary, previous, and next, etc. does not indicate any order. These words may be interpreted as names.

[0043] The above implementation modes are only suitable for illustrating the present invention, but not for limiting the present invention. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention. The scope of patent protection of the present invention should be limited by the claims.

Claims

1. A backup protection breaker that is easy to disconnect and detach, used for backup protection of a surge protector body, characterized in that: The invention comprises a spacing structure (6), a first release member (4) and a moving part (1), wherein the spacing structure (6) can cooperate with the moving part (1) to realize circuit conduction, the first release member (4) can cooperate with the moving part (1) to make the moving part (1) cooperate with the spacing structure (6), the first release member (4) can be disengaged from the moving part (1) according to a current signal of the circuit to separate the moving part (1) from the spacing structure (6), the cooperation direction of the first release member (4) and the moving part (1) is a first direction, the cooperation direction of the moving part (1) and the spacing structure (6) is a second direction, and the first direction is perpendicular to the second direction.

2. The easily disconnectable backup protection breaker according to claim 1, characterized in that: The moving portion (1) is provided with a first clamping groove, and the first releasing member (4) is slidably engaged with the first clamping groove along a first direction.

3. The easily disconnectable backup protection breaker according to claim 2, characterized in that: The invention also comprises a second release member (3) and a disengagement spring (5), wherein the disengagement spring (5) cooperates with the first release member (4) so ​​that the first release member (4) can be disengaged from the first clamping groove, and the second release member (3) can cooperate with the first release member (4) so ​​that the first release member (4) remains engaged with the first clamping groove, and the engagement direction of the second release member (3) and the first release member (4) is a second direction.

4. The easily disconnectable backup protection breaker according to claim 3, characterized in that: The backup protection breaker that is easy to disconnect and detach further comprises a current transformer (7) and an electromagnetic release (8), wherein the current transformer (7) cooperates with the spacing structure (6), the electromagnetic release (8) cooperates with the second release member (3), and the second release member (3) cooperates with the first release member (4), so that the second release member (3) can be detached from the first release member (4).

5. The easily disconnectable backup protection breaker according to claim 4, characterized in that: The spacing structure (6) comprises a first section (9) and a second section (10), a groove body is formed between the first section (9) and the second section (10), the first section (9) has a first contact surface (11) facing the groove body, and the second section (10) has a second contact surface (12) facing the groove body, the moving part (1) is located between the first contact surface (11) and the second contact surface (12), and the moving part (1) is provided with a first fitting part (13) and a second fitting part (14), the first fitting part (13) is in contact with the first contact surface (11), and the second fitting part (14) is in contact with the second contact surface (12).

6. The easily disconnectable backup protection breaker according to claim 5, characterized in that: The first contact surface (11) and the second contact surface (12) are both parallel to the second direction.

7. The easily disconnectable backup protection breaker according to claim 6, characterized in that: The first contact surface (11) and the second contact surface (12) are parallel.

8. The easily disconnectable backup protection breaker according to claim 5, characterized in that: A third spring is provided between the first fitting portion (13) and the second fitting portion (14); the first fitting portion (13) is pressed against the first contact surface (11) via the third spring, and the second fitting portion (14) is pressed against the second contact surface (12) via the third spring.

9. The easily disconnectable backup protection breaker according to claim 3, characterized in that: The first release member (4) is provided with a second snap-fitting groove, and the second release member (3) can cooperate with the second snap-fitting groove along a second direction; or the second release member (3) is provided with a second snap-fitting groove, and the first release member (4) can cooperate with the second snap-fitting groove along the second direction.

10. A surge protector, comprising a lightning protection element, characterized in that: The easily disconnectable backup protection breaker as described in any one of claims 1 to 9 is arranged in series with the lightning protection element.

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