Backup protection breaker easy to break and surge protector
By using sliding fit frame and moving parts in the backup protection breaker of the surge protector, combined with the insulating shielding part and spring structure, the problem of re-conduction of the second section of the lightning protection circuit caused by the spring action is solved, and the lightning protection circuit is realized. Reliable breakdown of backup protection.
Patent Information
- Application Number
- CN202420641830.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-31
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-03-31
AI Technical Summary
When the moving parts move out of the gap between the static electrode and the second section, the second section may continue to move due to the spring action, causing contact with the static electrode, causing the lightning protection circuit to be conducted again. , the problem of failure of backup protection.
A backup protection breaker that is easy to break is designed, adopting a sliding fit frame body and moving parts, and a shielding part is provided on the mobile frame. The shielding part is an insulating structure, and the moving block, the static electrode and the second section act as a tensioning spring. When the moving frame moves under the action of the first spring, the blocking part moves into the interval to prevent the moving electrode from contacting the static electrode and ensure that the lightning protection circuit is disconnected.
It effectively avoids the second section continuing to move under the action of the spring and contacting the static electrode, ensuring reliable disconnection of the lightning protection circuit, avoiding backup protection failure, and ensuring reliable disconnection of backup protection.
Smart Images
Figure CN222300583U_ABST
Abstract
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. Background Art
[0002] In order to realize the active disconnecting function of the backup protection breaker of the surge protector, the backup protection breaker of the surge protector now controls the action of the electromagnetic release through the current transformer, and the action side of the electromagnetic release cooperates with the moving contact of the spacing structure arranged on the grounding circuit through the linkage mechanism. The action side of the electromagnetic release moves the moving contact to be separated from the grounding circuit through the linkage mechanism, thereby disconnecting the grounding circuit.
[0003] Since the existing moving part is against the static electrode and the second section used to form a part of the lightning protection circuit, the moving part can slide out of the gap between the static electrode and the second section, so there is no fixed structure between the moving part and the static electrode and the second section, such as traditional low-temperature welding materials, etc., and there is a dimensional error or assembly error gap between the moving part and the static electrode and the second section, that is, the static electrode and the second section cannot achieve reliable conduction of the lightning protection circuit through the moving part. To avoid the above problem, there is a solution that relatively fixes the position of the static electrode, and the second section is pushed by the elastic force of the spring to achieve the static electrode and the second section to contact the moving part at the same time, so as to compensate for the error during assembly, or the dimensional error of each component during processing. The problem with the above solution is that the second section is always affected by the elastic force of the spring. When the moving part moves out of the gap between the static electrode and the second section, the second section loses its obstruction, resulting in the second section continuing to move in the direction of the static electrode under the action of the spring, and may cause the second section to contact the static electrode, causing the lightning protection circuit to be turned on again, and the backup protection fails. Utility Model Content
[0004] On the one hand, the utility model provides a backup protection breaker that is easy to disconnect, which can ensure reliable disconnection of the backup protection breaker;
[0005] On the other hand, the utility model provides a surge protector.
[0006] The utility model provides an easy-to-disconnect backup protection breaker, which is used for backup protection of a surge protector body, and comprises a slidably matched frame and a moving part, wherein the moving part comprises a moving frame matched with a first spring and a moving block slidably matched with the moving frame, and a shielding part is also provided on the moving frame. In the moving direction of the moving part, the shielding part and the moving block are arranged in sequence, and the moving block abuts against a static electrode and a second section arranged at intervals, and the second section comprises a moving electrode and a tensioning spring, and the moving electrode abuts against one side of the moving block under the action of the tensioning spring, so that the moving block abuts against the static electrode on the other side.
[0007] Furthermore, a moving groove is provided between two opposite end surfaces of the moving frame facing the static electrode and the second section, the moving block is located in the moving groove, and the two end surfaces form the shielding portion.
[0008] Furthermore, the movable frame is provided with a hook member cooperating with the trigger device, and the hook member cooperates with the trigger device through a hook body structure. A groove body is provided at one end of the movable frame facing the trigger device, and at least a part of the hook member is located in the groove body and is fixedly connected to the movable frame through a clamping structure.
[0009] Furthermore, the trigger device includes a control component and an action arm, the action arm cooperates with the hook member through a hook body and a slot, and the control component rotates with the action arm to disengage the hook body from the slot.
[0010] Furthermore, the control component includes a bracket, a coil assembly and a second spring. The bracket is a semi-enclosed structure with an opening on one side. The bracket has a first end and a second end on both sides near the opening, respectively. The action arm has opposite hook ends and rotating ends, respectively. The action arm near the rotating end is rotatably matched with the bracket near the second end, and the second spring is provided between the action arm and the bracket. The action arm near the hook end can be offset against the bracket near the first end under the action of the magnetic field of the permanent magnet; the coil assembly is sleeved on the bracket, and the coil assembly is connected to the secondary side of a transformer sleeved on the grounding circuit of the surge protector.
[0011] Furthermore, the action arm is provided with the second spring near the rotation axis and connected to the control assembly.
[0012] Furthermore, the end of the second end of the bracket abuts against the action arm near the second end, and the hook end and the rotating end of the action arm are respectively located on both sides of the second end of the bracket, so that the hook end of the action arm can be rotated to be close to the first end of the bracket, and one end of the second spring is connected to the action arm between the rotating end and the second end of the bracket.
[0013] Furthermore, along the direction of the rotation axis of the action arm, the end of the second end of the bracket is provided with clamping parts at intervals, and the action arm is located between the two clamping parts.
[0014] Furthermore, the first springs are respectively provided on both sides of the movable frame located at the trough body.
[0015] The surge protector provided by the utility model comprises a lightning protection element, wherein the lightning protection element is located on the grounding loop in the easily disconnectable backup protection breaker as described in any one of the above items.
[0016] Beneficial Effects
[0017] In order to solve the problem that when the moving part moves out of the gap between the static electrode and the second section, the second section loses its obstruction, resulting in the second section continuing to move toward the static electrode under the action of the spring, and may cause the second section to contact the static electrode, causing the lightning protection circuit to be turned on again and the backup protection to fail, a shielding part is provided on the mobile frame in the present scheme, and the shielding part is an insulating structure. The moving direction of the moving part is the moving direction of the mobile frame. Along the moving direction of the mobile frame, the shielding part and the moving block are arranged in sequence, that is, when the moving block is located in the interval between the static electrode and the second section, the shielding part is located outside the interval. At this time, the moving block and the static electrode and the moving electrode of the second section are against each other under the action of the tensioning spring. When the mobile frame moves under the action of the first spring, the moving block and the shielding part move with the mobile frame, the moving block moves out of the interval, and the shielding part moves into the interval. The shielding part and the moving electrode of the static electrode and the second section are against each other under the action of the tensioning spring. There is a shielding part between the moving electrode and the static electrode, so the moving electrode cannot always contact the static electrode, and also avoids the generation of an arc between the static electrode and the second section. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] 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.
[0019] Figure 1 It is a structural schematic diagram of the moving part of the backup protection breaker that is easy to disconnect provided by an embodiment of the utility model;
[0020] Figure 2 It is a partial structural diagram of a control component provided by an embodiment of the utility model;
[0021] Figure 3 It is a structural schematic diagram of a mobile rack provided in an embodiment of the utility model.
[0022] Figure numbers: 1-moving part; 2-static electrode; 3-moving electrode; 4-tensioning spring; 5-shielding part; 6-hook part; 7-first spring; 8-acting arm; 9-coil assembly; 10-bracket; 11-permanent magnet; 12-second spring; 13-moving slot; 14-slot body; 15-moving frame. DETAILED DESCRIPTION
[0023] 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.
[0024] Example
[0025] A backup protection breaker that is easy to disconnect is used for backup protection of a surge protector body, comprising a slidingly matched frame and a moving part 1, wherein the moving part 1 comprises a moving frame 15 matched with a first spring 7 and a moving block slidably matched with the moving frame 15, and a shielding portion 5 is also provided on the moving frame 15. In the moving direction of the moving part 1, the shielding portion 5 and the moving block are arranged in sequence, and the moving block abuts against a static electrode 2 and a second section that are arranged at intervals, and the second section comprises a moving electrode 3 and a tensioning spring 4. The moving electrode 3 abuts against one side of the moving block under the action of the tensioning spring 4, so that the moving block abuts against the static electrode 2 on the other side.
[0026] In order to realize the active disconnecting function of the backup protection breaker of the surge protector, the backup protection breaker of the surge protector now controls the action of the electromagnetic release through the current transformer, and the action side of the electromagnetic release cooperates with the moving contact of the spacing structure arranged on the grounding circuit through the linkage mechanism. The action side of the electromagnetic release moves the moving contact to be separated from the grounding circuit through the linkage mechanism, thereby disconnecting the grounding circuit.
[0027] Since the existing moving part 1 is against the static electrode 2 and the second section used to form a part of the lightning protection circuit, the moving part 1 can slide out of the gap between the static electrode 2 and the second section, so there is no fixed structure between the moving part 1 and the static electrode 2 and the second section, such as traditional low-temperature welding materials, etc., and there is a dimensional error or assembly error gap between the moving part 1 and the static electrode 2 and the second section, that is, the static electrode 2 and the second section cannot achieve reliable conduction of the lightning protection circuit through the moving part 1. In order to avoid the above problems, there is a solution that relatively fixes the position of the static electrode 2, and the second section is pushed by the elastic force of the spring to achieve the static electrode 2 and the second section to contact with the moving part 1 at the same time, so as to compensate for the error during assembly, or the dimensional error of each component during processing. The problem with the above solution is that the second section is always affected by the elastic force of the spring. When the moving part 1 moves out of the gap between the static electrode 2 and the second section, the second section loses its obstruction, resulting in the second section continuing to move in the direction of the static electrode 2 under the action of the spring, and may cause the second section to contact with the static electrode 2, causing the lightning protection circuit to be turned on again, and the backup protection fails.
[0028] To solve the above problems, a shielding portion 5 is further provided on the movable frame 15 in the present solution. The shielding portion 5 is an insulating structure. The moving direction of the movable member 1 is the moving direction of the movable frame 15. Along the moving direction of the movable frame 15, the shielding portion 5 and the movable block are arranged in sequence, that is, when the movable block is located in the gap between the static electrode 2 and the second section, the shielding portion 5 is located outside the gap. At this time, the movable block and the static electrode 2 and the movable electrode 3 of the second section are abutted against each other under the action of the tensioning spring 4. When the movable frame 15 moves under the action of the first spring 7, the movable block and the shielding portion 5 move with the movable frame 15, the movable block moves out of the gap, and the shielding portion 5 moves into the gap. The shielding portion 5 and the static electrode 2 and the movable electrode 3 of the second section are abutted against each other under the action of the tensioning spring 4. There is a shielding portion 5 between the movable electrode 3 and the static electrode 2, so the movable electrode 3 cannot always contact the static electrode 2, and also the arc is avoided between the static electrode 2 and the second section.
[0029] In an optional embodiment, a moving groove 13 is provided between two opposite end surfaces of the moving frame 15 facing the static electrode 2 and the second section, the moving block is located in the moving groove 13 , and the two end surfaces form a shielding portion 5 .
[0030] The movable frame 15 is an insulating structure. In the moving direction of the movable frame 15, the movable frame 15 can be divided into an upper part and a lower part. The upper part of the movable frame 15 is provided with a movable groove 13. The movable groove 13 is provided with openings on the two opposite end faces of the movable frame 15 facing the static electrode 2 and the second section. The movable block is located in the movable groove 13 and extends out of the movable groove 13 through the opening to abut against the static electrode 2 and the movable electrode 3. The lower end face of the movable member 1 is relatively flat to form an insulating part. When the movable frame 15 moves under the action of the first spring 7, the upper part of the movable frame 15 moves out of the interval and the lower part of the movable frame 15 moves into the interval. The two opposite end faces of the movable frame 15 are respectively abutted against the static electrode 2 and the movable electrode 3 of the second section. Due to the existence of the movable frame 15, the movable electrode 3 cannot always contact the static electrode 2.
[0031] In an optional embodiment, a hook member 6 cooperating with the trigger device is provided on the mobile frame 15, and the hook member 6 cooperates with the trigger device through a hook body structure. A groove body 14 is provided at one end of the mobile frame 15 facing the trigger device, and at least a portion of the hook member 6 is located in the groove body 14 and is fixedly connected to the mobile frame 15 through a clamping structure.
[0032] The function of the trigger device is to constrain the mobile frame 15 along its moving direction. Under the action of the trigger device, the mobile frame 15 maintains a position in which the moving block is against the static electrode 2 and the moving electrode 3. At this time, the first spring 7 is in an elastic deformation state, and the moving block moves along the moving direction of the moving electrode 3. Therefore, it cannot directly cooperate with the trigger device. The mobile frame 15 is an insulating structure. In order to avoid failure of cooperation with the trigger device during use due to insufficient structural strength or rigidity, the mobile frame 15 cooperates with the trigger device through a hook member 6. The hook member 6 can be made of a material with high structural strength or rigidity. Specifically, a groove body 14 is provided at one end of the mobile frame 15 facing the trigger device. One end of the hook member 6 is inserted into the groove body 14 and is fixedly connected to the mobile frame 15 through a clamping structure in the groove body 14. The other end of the hook member 6 cooperates with the trigger device through a hook body and a clamping groove.
[0033] Preferably, the clamping structure includes a through hole provided on the hook member 6, and the movable frame 15 is an injection molding structure, and a part of the material enters the through hole during molding, thereby preventing the hook member 6 from falling out of the clamping groove.
[0034] In an optional embodiment, the trigger device includes a control component and an action arm 8, the action arm 8 cooperates with the hook member 6 through a hook body and a slot, and the control component and the action arm 8 rotate to cooperate so that the hook body is disengaged from the slot.
[0035] The control assembly cooperates with the action arm 8 to rotate, so that the action arm 8 rotates until the hook and the slot between it and the moving member 1 are disengaged, and the moving frame 15 moves to be separated from the grounding circuit under the action of the first spring 7, thereby disconnecting the grounding circuit.
[0036] In an optional embodiment, the control component includes a bracket 10, a coil assembly 9 and a second spring 12. The bracket 10 is a semi-enclosed structure with an opening on one side. The bracket 10 has a first end and a second end on both sides near the opening, respectively. The action arm 8 has relative hook ends and rotating ends, respectively. The action arm 8 near the rotating end rotates with the bracket 10 near the second end, and a second spring 12 is provided between the action arm 8 and the bracket 10. The action arm 8 near the hook end can be offset with the bracket 10 near the first end under the action of the magnetic field of the permanent magnet 11; the coil assembly 9 is mounted on the bracket 10, and the coil assembly 9 is connected to the secondary side of the transformer mounted on the grounding circuit of the surge protector.
[0037] The bracket 10 is C-shaped, with an opening on one side, and the two sides of the opening are respectively a first end and a second end, the first end and the second end are respectively against the action arm 8, wherein the second end can form a rotational match with the rotating end of the action arm 8, and the first end adsorbs the action arm 8 under the action of the magnetic field to make it against each other. The hook body part at the hook end of the action arm 8 cooperates with the groove body 14 part on the moving part 1, so that the action arm 8 constrains the moving part 1 along its moving direction.
[0038] The coil assembly 9 is sleeved on the bracket 10 between the first end and the second end, and the wire is connected to the secondary side of the current transformer. The magnetic field generated by the coil assembly 9 offsets the magnetic field generated by the permanent magnet 11 or the two offset and weaken it until the suction force on the action arm 8 is less than the elastic force of the second spring 12, so that the action arm 8 rotates under the action of the second spring 12.
[0039] In an optional embodiment, a second spring 12 is provided on the action arm 8 near the rotation axis and connected to the control assembly.
[0040] In an optional embodiment, the end of the second end of the bracket 10 abuts against the action arm 8 near the second end, and the hook end and the rotating end of the action arm 8 are respectively located on both sides of the second end of the bracket 10, so that the hook end of the action arm 8 can be rotated to the first end close to the bracket 10, and one end of the second spring 12 is connected to the action arm 8 between the rotating end and the second end of the bracket 10.
[0041] The end of the second end of the bracket 10 forms a fulcrum structure, which abuts against the action arm 8. The area where the action arm 8 abuts against the first end is located on one side of the end of the second end of the bracket 10. The rotating end of the action arm 8 extends from the other side of the end of the second end of the bracket 10. One end of the second spring 12 is connected to the action arm 8 between the rotating end and the second end of the bracket 10, so that the action arm 8 and the end of the second end of the bracket 10 cooperate to form a seesaw structure. The hook end of the action arm 8 and the area abutting against the first end of the bracket 10 are located on one side of the second end of the bracket 10, and the second spring 12 and the rotating end of the action arm 8 are located on the other side of the second end of the bracket 10. When the action arm 8 abuts against the first end of the bracket 10 The second spring 12 is in a stretched state, and the magnetic attraction force and the elastic force of the second spring 12 are respectively on both sides of the second end of the bracket 10, so that the end of the action arm 8 and the second end of the bracket 10 are pressed tightly. When the magnetic field generated by the coil assembly 9 offsets the magnetic field generated by the permanent magnet 11 or the two offset and weaken to the point where the attraction force on the action arm 8 is less than the elastic force of the second spring 12, the second spring 12 pulls the rotating end of the action arm 8 to make the action arm 8 rotate around the second end of the bracket 10, so that the action arm 8 is separated from the first end of the bracket 10, and the hook end of the action arm 8 is also separated from the moving part 1. On the premise of achieving the rotational coordination between the action arm 8 and the bracket 10, the rotation structure is simplified to avoid the introduction of a rotating shaft or other structural parts.
[0042] In an optional embodiment, along the direction of the rotation axis of the action arm 8, the end of the second end of the bracket 10 is provided with clamping parts at intervals, and the action arm 8 is located between the two clamping parts.
[0043] The function of the clamping member is to constrain the actuating arm 8 to prevent the actuating arm 8 from moving along the axial direction of rotation.
[0044] In an optional embodiment, the moving frame 15 is provided with first springs 7 on both sides of the slot body 14 .
[0045] The surge protector provided by the utility model comprises a lightning protection element, and the lightning protection element is located on the grounding loop in any one of the above-mentioned backup protection breakers which is easy to break.
[0046] 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.
[0047] 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. An easy-to-break backup protection breaker for backup protection of a surge protector body, characterized in that: The invention comprises a frame body and a moving member (1) which are slidably matched, wherein the moving member (1) comprises a moving frame (15) which is matched with a first spring (7) and a moving block which is slidably matched with the moving frame (15), and the moving frame (15) is also provided with a shielding portion (5). In the moving direction of the moving member (1), the shielding portion (5) and the moving block are arranged in sequence, and the moving block abuts against a static electrode (2) and a second section which are arranged at intervals, and the second section comprises a moving electrode (3) and a tensioning spring (4). Under the action of the tensioning spring (4), the moving electrode (3) abuts against one side of the moving block, so that the moving block abuts against the static electrode (2) on the other side.
2. The easy-to-break backup protection breaker according to claim 1, characterized in that: A moving groove (13) is provided between two opposite end surfaces of the moving frame (15) facing the static electrode (2) and the second section, the moving block is located in the moving groove (13), and the two end surfaces form the shielding portion (5).
3. The easy-to-break backup protection breaker according to claim 2, characterized in that: The movable frame (15) is provided with a hook member (6) cooperating with the trigger device, and the hook member (6) cooperates with the trigger device through a hook body structure. The movable frame (15) is provided with a groove body (14) at one end facing the trigger device, and at least a part of the hook member (6) is located in the groove body (14) and is fixedly connected to the movable frame (15) through a clamping structure.
4. The easy-to-break backup protection breaker according to claim 3, characterized in that: The trigger device comprises a control component and an action arm (8), wherein the action arm (8) cooperates with the hook member (6) via a hook body and a slot, and the control component and the action arm (8) rotate to cooperate so that the hook body is disengaged from the slot.
5. The easy-to-break backup protection breaker according to claim 4, characterized in that: The control component comprises a bracket (10), a coil component (9) and a second spring (12); the bracket (10) is a semi-enclosed structure with an opening on one side; the bracket (10) has a first end and a second end on both sides close to the opening; the action arm (8) has a hook end and a rotating end opposite to each other; the action arm (8) is rotatably matched with the bracket (10) close to the second end at the rotating end; and the second spring (12) is arranged between the action arm (8) and the bracket (10); the action arm (8) close to the hook end can be offset against the bracket (10) close to the first end under the action of the magnetic field of the permanent magnet (11); the coil component (9) is sleeved on the bracket (10); and the coil component (9) is connected to the secondary side of a mutual inductor sleeved on the grounding circuit of the surge protector.
6. The easy-to-break backup protection breaker according to claim 5, characterized in that: The second spring (12) is provided near the rotation axis of the action arm (8) and is connected to the control component.
7. The easy-to-break backup protection breaker according to claim 5, characterized in that: The end of the second end of the bracket (10) abuts against the action arm (8) near the second end, and the hook end and the rotating end of the action arm (8) are respectively located on both sides of the second end of the bracket (10), so that the hook end of the action arm (8) can be rotated to be close to the first end of the bracket (10), and one end of the second spring (12) is connected to the action arm (8) between the rotating end and the second end of the bracket (10).
8. The easy-to-break backup protection breaker according to claim 7, characterized in that: In the direction of the rotation axis of the action arm (8), the end of the second end of the bracket (10) is provided with clamping parts at intervals, and the action arm (8) is located between the two clamping parts.
9. The easy-to-break backup protection breaker according to claim 3, characterized in that: The first springs (7) are respectively provided on both sides of the movable frame (15) located on the trough body (14).
10. A surge protector, comprising a lightning protection element, characterized in that: The lightning protection element is located on the grounding circuit of the easily disconnectable backup protection breaker as described in any one of claims 1-9.