Backup protection breaker linkage mechanism and surge protector

Abstract

The utility model relates to the field of surge protector equipment, in particular to a linkage mechanism of a backup protection breaker and a surge protector. The linkage mechanism of the backup protection breaker comprises a rack fixedly connected with a moving assembly and a gear assembly matched with an action piece of a trigger assembly, the moving assembly is matched with a breaking spring, and the gear assembly comprises a first gear part and a second gear part which are coaxially matched. The gear radius of the first gear part is larger than that of the second gear part, the first gear part is matched with the action piece, the action piece is used for limiting rotation of the first gear part under the action of the trigger assembly, and the rack is meshed with the second gear part.

Description

Technical Field

[0001] The utility model relates to the field of surge protector equipment, in particular to a backup protection breaker linkage mechanism and a surge protector. Background Art

[0002] In order to realize the active disconnection 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 component in the interval structure arranged on the grounding circuit through the linkage mechanism, such as by using the method of matching the hook and the card slot to constrain the moving component to prevent the moving component from moving to the contact points at the ends of the interval structure under the action of the disconnecting spring, and when the active disconnection action is triggered, the electromagnetic release drives the hook to disengage from the moving component, so that the moving component moves to be separated from the grounding circuit, thereby disconnecting the grounding circuit.

[0003] The problem with the above scheme is that the moving component relies on the elastic force of the disconnecting spring to move, and the constraint on the moving component is achieved by a hook extended into the slot of the moving component. Since the moving component tends to move under the action of the disconnecting spring, the hook is against the inner wall of the slot in the slot, and the friction between the two is relatively large. When the active disconnecting action is triggered, the electromagnetic release drives the hook out of the slot. During this process, the friction needs to be overcome, so the electromagnetic release needs to have a large driving force. The electromagnetic release needs to trigger the current generated by the secondary side of the current transformer to trigger its action side to drive the hook out of the slot. Therefore, a large driving force requires a large secondary current of the current transformer, and the function trigger signal of the active disconnection depends on the induction of the current transformer to the current flowing through the grounding loop. Therefore, the above scheme is not conducive to the setting of the sensitivity of the backup protection breaker. Utility Model Content

[0004] On the one hand, the utility model provides a backup protection disconnector linkage mechanism, so that the smaller restraining force generated by the trigger assembly can overcome the larger elastic force generated by the disconnecting spring and ensure reliable triggering of the disconnecting action;

[0005] On the other hand, the utility model provides a surge protector.

[0006] The backup protection breaker linkage mechanism provided by the utility model includes a rack fixedly connected to a moving component and a gear component matched with an actuating member of a triggering component, wherein the moving component matches with a disconnecting spring, and the gear component includes a first gear portion and a second gear portion that match coaxially, wherein the gear radius of the first gear portion is greater than the gear radius of the second gear portion, and the first gear portion matches with the actuating member, and the actuating member is used to limit the rotation of the first gear portion under the action of the triggering component, and the rack is meshed with the second gear portion.

[0007] Further, the rack can be moved to be disengaged from the second gear portion.

[0008] Furthermore, the trigger assembly also includes a bracket member electrically connected to the mutual inductor, the action member includes a fourth gear, a connecting rod and a movable member, the movable member and the bracket member are adsorbed and matched through the magnetic field force of the permanent magnet, the fourth gear is meshed with the first gear part, one end of the connecting rod is rotationally matched with the movable member, and the other end is rotationally matched with the eccentric position of the fourth gear, and the fourth gear can be rotated to disengage from the first gear part.

[0009] Further, in the radial direction along the gear radius of the fourth gear, the rotation axis of the connecting rod at the fourth gear is located between the meshing point of the fourth gear and the rotation axis of the fourth gear.

[0010] Furthermore, a first interlocking gear and a second interlocking gear that are coaxially matched are provided between the fourth gear and the first gear portion, the gear radius of the first interlocking gear is larger than the gear radius of the second interlocking gear, the first interlocking gear is meshed with the fourth gear, the second interlocking gear is meshed with the first gear portion, and the first interlocking gear and the fourth gear can be rotated to disengage.

[0011] Furthermore, the first connecting gear has a first tooth structure protruding along the radial direction of the gear radius on one side facing the fourth gear, and the fourth gear has a second tooth structure protruding along the radial direction of the gear radius on one side facing the first connecting gear, and the first tooth structure is meshed with the second tooth structure.

[0012] Furthermore, the second linkage gear and the first gear portion can be rotated to be disengaged.

[0013] Furthermore, a slide groove structure is provided on the first gear part, and a positioning rod is provided on the outer shell of the backup protection breaker linkage mechanism for rotationally cooperating with the first gear part. The positioning rod can be abutted against the inner wall of the end groove of the slide groove structure in the slide groove structure to limit the rotation of the first gear part.

[0014] Furthermore, a window structure is provided on the housing of the backup protection breaker linkage mechanism, and the first gear part has a positioning portion protruding in the radial direction of the gear radius on the side facing the window structure, and the positioning portion can be rotated out of the housing through the window structure along with the first gear part.

[0015] The surge protector provided by the utility model comprises a lightning protection element, and the lightning protection element is located on the grounding circuit in the linkage mechanism of the backup protection breaker as described in any one of the above items.

[0016] Beneficial Effects

[0017] The first gear portion and the second gear portion in the present solution rotate coaxially. When the first gear portion rotates, the second gear portion rotates accordingly. The first gear portion cooperates with the actuating member. The first gear portion cannot rotate under the restraining force generated by the actuating member, thereby preventing the second gear portion from rotating. The second gear portion meshes with the rack on the moving component, so that the moving component can overcome the elastic force of the disconnecting spring and maintain the undisconnected state of the grounding circuit. Since the gear radius of the first gear portion is larger than the gear radius of the second gear portion, for the trigger component, the first gear portion and the second gear portion form a force-saving lever model. Therefore, the smaller restraining force generated by the actuating member can balance the larger elastic force generated by the disconnecting spring. 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 schematic diagram of the overall structure of the backup protection breaker linkage mechanism provided by the embodiment of the utility model;

[0020] Figure 2 It is a partial structural diagram of a trigger component provided by an embodiment of the utility model;

[0021] Figure 3 It is a schematic diagram of the structure of the first gear part and the second gear part provided in an embodiment of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the cooperation between the first linkage gear and the fourth gear provided by an embodiment of the utility model.

[0023] Figure numbers: 1-moving component; 2-trigger component; 3-acting member; 4-rack; 5-second gear portion; 6-first gear portion; 7-second interlocking gear; 8-first interlocking gear; 9-fourth gear; 10-connecting rod; 11-movable member; 12-coil component; 13-bracket member; 14-slide structure; 15-positioning portion; 16-second tooth structure; 17-first tooth structure. DETAILED DESCRIPTION

[0024] 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.

[0025] Example

[0026] A backup protection breaker linkage mechanism includes a rack 4 fixedly connected to a moving component 1 and a gear assembly matched with an actuating member 3 of a triggering component 2. The moving component 1 matches with a disconnecting spring. The gear assembly includes a first gear portion 6 and a second gear portion 5 that match coaxially. The gear radius of the first gear portion 6 is greater than the gear radius of the second gear portion 5. The first gear portion 6 matches with the actuating member 3. The actuating member 3 is used to limit the rotation of the first gear portion 6 under the action of the triggering component 2. The rack 4 is meshed with the second gear portion 5.

[0027] In order to solve the problem of coordination between the restraining force of the electromagnetic release serving as the trigger component 2 and the elastic force of the disconnecting spring of the mobile component 1 in the existing backup protection active disconnecting scheme, the trigger component 2 and the mobile component 1 in this scheme are connected through the rack 4 and the gear component. The mobile component 1 is subjected to the elastic force of the disconnecting spring, and the trigger component 2 exerts a restraining effect on the mobile component 1. The force is sequentially transmitted to the mobile component 1 through the first gear part 6, the second gear part 5 and the rack 4, thereby overcoming the force of the disconnecting spring.

[0028] Specifically, the first gear portion 6 and the second gear portion 5 rotate coaxially. When the first gear portion 6 rotates, the second gear portion 5 rotates accordingly. The first gear portion 6 cooperates with the actuating member 3. The first gear portion 6 cannot rotate under the restraining force generated by the actuating member 3, thereby making the second gear portion 5 unable to rotate. The second gear portion 5 meshes with the rack 4 on the moving component 1, so that the moving component 1 can overcome the elastic force of the disconnecting spring and maintain the undisconnected state of the grounding circuit. Since the gear radius of the first gear portion 6 is larger than the gear radius of the second gear portion 5, for the trigger component 2, the first gear portion 6 and the second gear portion 5 form a force-saving lever model. Therefore, the smaller restraining force generated by the actuating member 3 can balance the larger elastic force generated by the disconnecting spring.

[0029] Preferably, the first gear portion 6 and the second gear portion 5 in the present embodiment refer to a mechanism that can achieve the transmission of force and motion through the meshing of tooth structures. For example, a general lever structure is provided with tooth structures at both ends, which can also be included in the category referred to by the first gear portion 6 and the second gear portion 5 in the present embodiment; the first gear portion 6 and the second gear portion 5 respectively have a part of tooth structure along the circumferential direction of their rotation axis, and can achieve the transmission of force and motion through the meshing of tooth structures within a certain rotation angle.

[0030] In an optional embodiment, the rack 4 can be moved to be disengaged from the second gear part 5 .

[0031] The rack 4 is fixed on the moving component 1 and moves with the moving component 1. The rack 4 is constrained by the second gear part 5, so that the moving component 1 maintains the current cooperation with the contacts on both sides of the disconnecting gap on the grounding circuit, keeping the grounding circuit in an undisconnected state.

[0032] When the grounding circuit needs to be disconnected, the restraining force of the trigger component 2 disappears. The existing electromagnetic release solution can be referred to, resulting in the disappearance of the restraining force of the second gear part 5 on the rack 4. The rack 4 moves with the moving component 1 under the action of the disconnecting spring, and the meshing of the rack 4 and the second gear part 5 causes the second gear part 5 to rotate. In order to ensure the disconnecting effect of the grounding circuit, the stroke of the moving component 1 is relatively large, so that the moving contact on the moving component 1 can be completely disengaged from the contacts on both sides of the disconnecting gap on the grounding circuit. The moving component 1 and the actuating member 3 of the trigger component 2 are linked by the second gear part 5 and the first gear part 6. The gear radius of the first gear part 6 is larger than the gear radius of the second gear part 5. Therefore, the stroke of the moving component 1 requires the actuating member 3 In order to cooperate with the larger stroke, the stroke of the action member 3 needs to be realized by reserving space. In order to avoid the stroke of the action member 3 occupying a larger space of the backup protection breaker, the number of tooth structures on the rack 4 in this scheme is relatively small, or the meshing position of the second gear portion 5 and the rack 4 is close to the end of the rack 4. After the rack 4 moves with the moving component 1 for a certain displacement, it is disengaged from the second gear portion 5, that is, the second gear portion 5 only rotates with it within a part of the stroke of the moving component 1. Therefore, the stroke design of the action member 3 only needs to consider this section of the stroke of the moving component 1, and a smaller stroke of the action member 3 can be designed. After the rack 4 is disengaged from the second gear portion 5, the moving component 1 moves relatively independently, and does not drive the second gear portion 5 to rotate, and the action member 3 no longer moves with it.

[0033] In an optional embodiment, the trigger assembly 2 also includes a bracket member 13 electrically connected to the mutual inductor, the action member 3 includes a fourth gear 9, a connecting rod 10 and a movable member 11, the movable member 11 and the bracket member 13 are adsorbed and matched through the magnetic field force of the permanent magnet, the fourth gear 9 is meshed with the first gear portion 6, one end of the connecting rod 10 is rotationally matched with the movable member 11, and the other end is rotationally matched with the eccentric position of the fourth gear 9, and the fourth gear 9 can be rotated to disengage from the first gear portion 6.

[0034] The bracket is C-shaped, with an opening on one side and abutment ends on both sides of the opening. The permanent magnet magnetizes the bracket, and the two abutment ends attract the movable part 11 and abut against it under the action of the magnetic field, that is, the movable part 11 maintains a fixed relative position, and the fourth gear 9 connected to the movable part 11 through the connecting rod 10 cannot rotate, and the first gear part 6 meshing with it cannot rotate either, so that the movable part 11 produces a restraining force on the moving component 1.

[0035] The coil assembly 12 is mounted on the bracket, and its wire is connected to the secondary side of the transformer. The transformer is mounted on the grounding loop. When the calibrated current flows through the grounding loop, the current generated by the transformer causes the coil assembly 12 to generate a magnetic field, which offsets the magnetic field of the permanent magnet or the two offset and weaken the suction force on the movable part 11 to be less than the elastic force of the breaking spring acting on the movable part 11, so that the movable part 11 is separated from the bracket, and thereafter the movable part 11 cannot generate a restraining force on the movable component 1.

[0036] Preferably, the fourth gear 9 in the present scheme refers to a mechanism that can achieve the transmission of force and motion through the meshing of tooth structures. For example, a general lever structure is provided with a tooth structure at the end, which can also be included in the category referred to by the fourth gear 9 in the present scheme; the fourth gear 9 and the first gear part 6 each have a part of tooth structure on their respective sides facing each other, which can achieve the transmission of force and motion through the meshing of tooth structures within a certain rotation angle. The number of tooth structures on the fourth gear 9 and the first gear part 6 in the present scheme is relatively small. After the fourth gear 9 rotates a certain angle with the first gear part 6, the two are disengaged, that is, the fourth gear 9 only rotates with it within a part of the stroke of the moving component 1. Therefore, the stroke design of the moving part 3 only needs to consider this section of the stroke of the moving component 1, and a smaller stroke of the moving part 3 can be designed. After the fourth gear 9 and the first gear part 6 rotate and disengage, the moving component 1 moves relatively independently and does not drive the fourth gear 9 to rotate, and the movable part 11 no longer moves with it.

[0037] In an optional embodiment, in the radial direction along the gear radius of the fourth gear 9 , the rotation axis of the connecting rod 10 at the fourth gear 9 is located between the meshing point of the fourth gear 9 and the rotation axis of the fourth gear 9 .

[0038] The connecting rod 10 converts the rotation of the fourth gear 9 into the movement of the movable part 11 in the direction of disengaging from the bracket. The matching point between the connecting rod 10 and the fourth gear 9 is located between the meshing point of the fourth gear 9 and the rotation axis of the fourth gear 9. Therefore, when the fourth gear 9 rotates, the rotation trajectory stroke at the matching point between the connecting rod 10 and the fourth gear 9 is smaller than the rotation trajectory stroke at the tooth structure of the fourth gear 9, thereby making the movement stroke of the movable part 11 driven by the connecting rod 10 smaller than the rotation trajectory stroke at the tooth structure of the fourth gear 9, further reducing the stroke of the movable part 11.

[0039] In an optional embodiment, a coaxially matched first linkage gear 8 and a second linkage gear 7 are provided between the fourth gear 9 and the first gear portion 6, the gear radius of the first linkage gear 8 is larger than the gear radius of the second linkage gear 7, the first linkage gear 8 is meshed with the fourth gear 9, the second linkage gear 7 is meshed with the first gear portion 6, and the first linkage gear 8 and the fourth gear 9 can be rotated to disengage.

[0040] The first linkage gear 8 and the second linkage gear 7 rotate coaxially. When the second linkage gear 7 rotates, the first linkage gear 8 rotates accordingly, the second linkage gear 7 meshes with the first gear portion 6, and the first linkage gear 8 meshes with the fourth gear 9, forming a transmission of the fourth gear 9, the first linkage gear 8, the second linkage gear 7, the first gear portion 6, the second gear portion 5 and the rack 4. Since the gear radius of the first linkage gear 8 is larger than the gear radius of the second linkage gear 7, for the trigger assembly 2, the first linkage gear 8 and the second linkage gear 7 form a force-saving lever model, so that the smaller constraint force generated by the bracket on the movable part 11 can balance the larger elastic force generated by the breaking spring.

[0041] Preferably, the first linkage gear 8 in the present scheme refers to a mechanism that can realize the transmission of force and motion through the meshing of tooth structures. For example, a general lever structure is provided with a tooth structure at the end, which can also be included in the category referred to by the first linkage gear 8 in the present scheme; the fourth gear 9 and the first linkage gear 8 each have a part of tooth structure on their respective sides facing each other, and can realize the transmission of force and motion through the meshing of tooth structures within a certain rotation angle. The number of tooth structures on the fourth gear 9 and the first linkage gear 8 in the present scheme is relatively small. After the fourth gear 9 rotates a certain angle with the first linkage gear 8, the two are disengaged, that is, the fourth gear 9 only rotates with it within a part of the stroke of the moving component 1. Therefore, the stroke design of the actuating part 3 only needs to consider this section of the stroke of the moving component 1, and a smaller stroke of the actuating part 3 can be designed.

[0042] In an optional embodiment, the first connecting gear 8 has a first tooth structure 17 protruding in the radial direction of the gear radius on the side facing the fourth gear 9, and the fourth gear 9 has a second tooth structure 16 protruding in the radial direction of the gear radius on the side facing the first connecting gear, and the first tooth structure 17 is meshed with the second tooth structure 16.

[0043] The first linkage gear 8 is a rod-shaped structure, and one end along its length direction cooperates with the outer shell through a rotating shaft. The second linkage gear 7 is a complete gear structure, and the tooth structure is evenly arranged along the circumference. The second linkage gear 7 is sleeved on the rotating shaft of the first linkage gear 8, and the other end of the first linkage gear 8 extends toward the fourth gear 9, and the extension direction is perpendicular to the axial direction of the rotating shaft, and a first tooth structure 17 is formed at the end. The gear radius of the first linkage gear 8, that is, the distance between the rotating shaft of the first linkage gear 8 and the first tooth structure 17, is greater than the gear radius of the second linkage gear 7.

[0044] The fourth gear 9 is a rod-shaped structure, one end of which along its length direction cooperates with the housing through a rotating shaft, and the other end extends toward the first tooth structure 17, the extension direction is perpendicular to the axial direction of the rotating shaft, and the second tooth structure 16 is formed at the end. The first tooth structure 17 is meshed with the second tooth structure 16. After the fourth gear 9 and the first linkage gear 8 rotate through a certain angle, the first tooth structure 17 is disengaged from the second tooth structure 16.

[0045] The fourth gear 9 and the first linkage gear 8 are rod-shaped structures respectively, and after rotating a certain angle, the first tooth structure 17 is disengaged from the second tooth structure 16. Therefore, the area swept by the fourth gear 9 when rotating is a sector-shaped. Compared with a complete gear structure, the fourth gear 9 in this solution occupies a smaller space, which is conducive to the miniaturization of the backup protection breaker.

[0046] In an optional embodiment, the second interlocking gear 7 and the first gear portion 6 can be rotated to be disengaged.

[0047] The first gear portion 6 is processed to form a tooth structure on the side facing the second linkage gear 7. The number of tooth structures on the first gear portion 6 in this scheme is relatively small. After the second linkage gear 7 rotates a certain angle with the first gear portion 6, the two are disengaged. The first linkage gear 8 coaxially connected to the second linkage gear 7 is a rod-shaped structure. After rotating a certain angle, the second linkage gear 7 is disengaged from the first gear portion 6, and the second linkage gear 7 and the first linkage gear 8 stop rotating. Therefore, the area swept by the first linkage gear 8 when rotating is a sector-shaped. Compared with a complete gear structure, the first linkage gear 8 in this scheme occupies a smaller space, which is conducive to the miniaturization of the backup protection switch.

[0048] In an optional embodiment, a slide groove structure 14 is provided on the first gear portion 6, and a positioning rod is provided on the outer shell of the backup protection breaker linkage mechanism for rotationally cooperating with the first gear portion 6. The positioning rod can be abutted against the inner wall of the end groove of the slide groove structure 14 in the slide groove structure 14 to limit the rotation of the first gear portion 6.

[0049] The housing is used to cover the various components of the backup protection breaker, and provides shaft connection points such as the fourth gear 9, the first connecting gear 8, the second connecting gear 7, the first gear part 6 and the second gear part 5, and also provides a fixing position for the bracket part 13 of the trigger component 2 and a sliding matching position for the moving component 1.

[0050] The positioning rod on the housing is in the slide groove structure 14 on the first gear part 6. As the first gear part 6 rotates, the positioning rod moves in the slide groove structure 14 until it abuts against the inner wall of the groove, causing the first gear part 6 to stop rotating, thereby preventing the first gear part 6 from continuing to rotate due to inertia after the rack 4 is disengaged from the second gear part 5.

[0051] During assembly, the first gear portion 6 and the second gear portion 5 cooperate with the rotating shaft on the housing along the axial direction of the rotating shaft, and the positioning rod extends into the slide groove structure 14 along the above direction.

[0052] In an optional embodiment, a window structure is provided on the outer shell of the backup protection breaker linkage mechanism, and the first gear portion 6 has a positioning portion 15 protruding in the radial direction of the gear radius on the side facing the window structure, and the positioning portion 15 can be rotated out of the outer shell with the first gear portion 6 through the window structure.

[0053] The function of the positioning portion 15 is to transmit the signal of the backup protection breaker being disconnected. Specifically, when the calibrated current flows through the grounding circuit, the movable part 11 cannot generate a restraining force on the moving component 1. Under the action of the disconnecting spring, the moving component 1 moves to be disengaged from the contacts on both sides of the disconnecting gap on the grounding circuit. The rack 4 moves with the moving component 1, and the rack 4 drives the second gear portion 5 to rotate, thereby driving the first gear portion 6 to rotate. The positioning portion 15 on the first gear portion 6 rotates accordingly and extends out of the shell through the window structure on the shell. A corresponding device is provided outside the shell that can cooperate with the positioning portion 15 extending out of the shell, such as a pressure sensor, to obtain a signal that the contacts on both sides of the disconnecting gap of the moving component 1 are disengaged from the grounding circuit, and the backup protection breaker triggers a disconnection operation.

[0054] The first gear portion 6 is a fan-shaped structure, and its smaller end cooperates with the housing through a rotating shaft. The second gear portion 5 is a complete gear structure, and the tooth structure is evenly arranged along the circumference. The second gear portion 5 is sleeved on the rotating shaft of the first gear portion 6, and the other larger end of the first gear portion 6 is respectively provided with a slide groove structure 14, a positioning portion 15 and a tooth structure for meshing with the second linkage gear 7. The gear radius of the first gear portion 6, that is, the distance between the rotating shaft of the first gear portion 6 and the tooth structure is greater than the gear radius of the second gear portion 5.

[0055] The surge protector provided by the utility model comprises a lightning protection element, which is located in a lightning protection module head, and the lightning protection module head, a base and a backup protection breaker form a surge protector. The lightning protection element is located on a grounding circuit, and a disconnecting gap is also provided on the grounding circuit. The moving component 1 of the backup protection breaker cooperates with the disconnecting gap in a normal state, and the moving contact on the moving component 1 conducts the contacts on both sides of the disconnecting gap. The moving component 1 can move to be separated from the contacts on both sides of the disconnecting gap on the grounding circuit under the action of a disconnecting spring, so that the backup protection breaker triggers a disconnecting operation.

[0056] 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.

[0057] 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 linkage mechanism, characterized in that: The invention comprises a rack (4) fixedly connected to a moving assembly (1) and a gear assembly matched with an actuating member (3) of a trigger assembly (2); the moving assembly (1) matches with a disconnecting spring; the gear assembly comprises a first gear portion (6) and a second gear portion (5) which are coaxially matched; the gear radius of the first gear portion (6) is greater than the gear radius of the second gear portion (5); the first gear portion (6) matches with the actuating member (3); the actuating member (3) is used to limit the rotation of the first gear portion (6) under the action of the trigger assembly (2); and the rack (4) is meshed with the second gear portion (5).

2. The backup protection breaker linkage mechanism according to claim 1, characterized in that: The rack (4) is movable to be disengaged from the second gear portion (5).

3. The backup protection breaker linkage mechanism according to claim 2, characterized in that: The trigger assembly (2) further comprises a support member (13) electrically connected to the mutual inductor, the action member (3) comprises a fourth gear (9), a connecting rod (10) and a movable member (11), the movable member (11) and the support member (13) are adsorbed and matched with each other through the magnetic field force of a permanent magnet, the fourth gear (9) is meshed with the first gear portion (6), one end of the connecting rod (10) is rotationally matched with the movable member (11), and the other end is rotationally matched with the eccentric position of the fourth gear (9), and the fourth gear (9) can be rotated to be disengaged from the first gear portion (6).

4. The backup protection breaker linkage mechanism according to claim 3, characterized in that: In the radial direction along the gear radius of the fourth gear (9), the rotation axis of the connecting rod (10) at the fourth gear (9) is located between the meshing point of the fourth gear (9) and the rotation axis of the fourth gear (9).

5. The backup protection breaker linkage mechanism according to claim 3, characterized in that: A first interlocking gear (8) and a second interlocking gear (7) are coaxially matched between the fourth gear (9) and the first gear portion (6); the gear radius of the first interlocking gear (8) is greater than the gear radius of the second interlocking gear (7); the first interlocking gear (8) is meshed with the fourth gear (9); the second interlocking gear (7) is meshed with the first gear portion (6); and the first interlocking gear (8) and the fourth gear (9) can be rotated to disengage.

6. The backup protection breaker linkage mechanism according to claim 5, characterized in that: The first interlocking gear (8) has a first tooth structure (17) protruding in the radial direction of the gear radius on a side facing the fourth gear (9), and the fourth gear (9) has a second tooth structure (16) protruding in the radial direction of the gear radius on a side facing the first interlocking gear, and the first tooth structure (17) is meshed with the second tooth structure (16).

7. The backup protection breaker linkage mechanism according to claim 5, characterized in that: The second interlocking gear (7) and the first gear portion (6) can rotate to disengage.

8. The backup protection breaker linkage mechanism according to claim 2, characterized in that: A slide groove structure (14) is provided on the first gear part (6), and a positioning rod is provided on the outer shell of the backup protection disconnector linkage mechanism for rotationally cooperating with the first gear part (6). The positioning rod can abut against the inner wall of the end groove of the slide groove structure (14) in the slide groove structure (14) to limit the rotation of the first gear part (6).

9. The backup protection breaker linkage mechanism according to claim 8, characterized in that: A window structure is provided on the housing of the backup protection breaker linkage mechanism, and a positioning portion (15) protrudingly arranged in the radial direction of the gear radius is provided on the side of the first gear portion (6) facing the window structure, and the positioning portion (15) can be rotated out of the housing along with the first gear portion (6) through the window structure.

10. A surge protector, comprising a lightning protection element, characterized in that: The lightning protection element is located on the grounding circuit in the backup protection breaker linkage mechanism as described in any one of claims 1-9.

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