Circuit breaker iron core retaining device

Abstract

The utility model discloses a circuit breaker iron core holding device, and relates to the technical field of circuit breakers. The circuit breaker comprises a circuit breaker body, a switch is arranged on the front face of the circuit breaker body, an outer box is fixedly connected to the top of the circuit breaker body, a first groove is formed in the outer box, a connecting plate is fixedly connected to the top of the inner wall of the first groove, and a power-off assembly is arranged in the circuit breaker body. A holding assembly is arranged above the circuit breaker body, and the holding assembly comprises a first fixing block. According to the utility model, the holding assembly is arranged, specifically, a rotating handle is rotated clockwise to drive a bidirectional threaded rod to rotate, and when the bidirectional threaded rod rotates continuously, the sides, close to each other, of two holding blocks are inserted into a second groove formed in the iron core, so that the iron core can be fixed; according to the utility model, a worker does not need to prepare an additional power supply when checking the circuit breaker, so that the worker can quickly and conveniently check the circuit breaker, and the working efficiency of the worker is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit breakers, and particularly relates to a circuit breaker iron core retaining device. Background Art

[0002] The existing circuit breaker comprises: a switch contact that controls the conduction or disconnection of the current in the circuit; a switch operating mechanism that performs a switching operation on the switch contact; an overcurrent tripping device that activates the switch operating mechanism when an overcurrent flows in the circuit; and an undervoltage tripping device that activates the switch operating mechanism when the circuit voltage is less than or equal to a specified value.

[0003] When the staff needs to conduct regular inspections on the circuit breaker, for safety reasons, the circuit voltage of the circuit breaker needs to be cut off. When the circuit voltage of the circuit breaker is cut off, the circuit breaker will trip, so that the staff needs to prepare an additional power supply to provide voltage for the circuit breaker during inspection, which increases the tediousness of the staff's inspection and reduces the staff's work efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a circuit breaker core retaining device, which can fix the circuit breaker core during inspection by retaining components, and solves the problem that when the circuit voltage of the circuit breaker is cut off, the circuit breaker will trip, so that the staff needs to prepare a power supply to provide voltage for the circuit breaker during inspection, which increases the cumbersomeness of the staff's inspection and reduces the staff's work efficiency.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a circuit breaker core holding device, comprising a circuit breaker body, a switch is arranged on the front of the circuit breaker body, an outer box is fixedly connected to the top of the circuit breaker body, a groove is arranged inside the outer box, a connecting plate is fixedly connected to the top of the inner wall of the groove, a power-off component is arranged inside the circuit breaker body, a holding component is arranged above the circuit breaker body, the holding component comprises a fixing block, the bottom of the fixing block is fixedly connected to the top of the circuit breaker body, a circular groove is arranged inside the fixing block, a rotating shaft is rotatably connected to the inner wall of the circular groove, a turning handle is fixedly connected to the front of the rotating shaft, and by arranging the holding component, a staff does not need to prepare an additional power supply when checking the circuit breaker, so that the staff can quickly and conveniently check the circuit breaker, thereby improving the work efficiency of the staff.

[0007] Furthermore, a bevel gear 1 is fixedly connected to the back of the rotating shaft, and a fixed block 2 is fixedly connected to the front of the outer box. There are two fixed blocks 2, and circular grooves 2 are opened inside the two fixed blocks 2. The inner walls of the two circular grooves 2 are rotatably connected to a bidirectional threaded rod. By setting the fixed block 2, the bidirectional threaded rod is more stable during the rotation process.

[0008] Furthermore, a bevel gear 2 is fixedly connected at the center of the outer surface of the bidirectional threaded rod, the front side of the bevel gear 2 is meshed with the back side of the bevel gear 1, a retaining block is threadedly connected to the outer surface of the bidirectional threaded rod, and there are two retaining blocks, both of which have circular grooves 3 formed inside, a sliding rod is fixedly connected to the inner wall of the outer box, and the inner walls of the two circular grooves 3 are both slidably connected to the outer surface of the sliding rod, and the sliding rod is provided to make the retaining block more stable when moving and will not rotate with the rotation of the bidirectional threaded rod.

[0009] Furthermore, a circular groove four is provided on the top of the connecting plate, a round rod is slidably connected to the inner wall of the circular groove four, an iron core is fixedly connected to the top of the round rod, a groove two is provided inside the iron core, and the bottom of the round rod passes through the connecting plate and extends to the outside. By setting the connecting plate, support force is provided for the electromagnetic solenoid and the iron core.

[0010] Furthermore, an electromagnetic solenoid is sleeved on the outer surface of the iron core, and a spring is sleeved on the outer surface of the round rod. The top of the spring is fixedly connected to the bottom of the iron core, and the bottom of the spring is fixedly connected to the top of the connecting plate. By arranging the spring, the iron core will not move downward when the device is working normally.

[0011] Furthermore, the power-off component includes two fixing plates, the front and bottom of the two fixing plates are fixedly connected to the inner wall of the circuit breaker body, the two fixing plates are fixedly connected with a rotating shaft 1 on one side close to each other, a metal sheet is rotatably connected to the outer surface of the rotating shaft 1, and the top of the metal sheet is in contact with the bottom of the electromagnetic solenoid, and the two fixing plates are fixedly connected with a rotating shaft 2 on one side close to each other, a rotating block is rotatably connected to the outer surface of the rotating shaft 2, and the bottom of the rotating block is in contact with the top of the metal sheet. By setting the power-off component, the circuit breaker can quickly trip when a short circuit occurs in the circuit, thereby avoiding damage to power lines, motors and other equipment, and improving the practicability of the device.

[0012] Furthermore, the two fixed plates are fixedly connected to a support plate on one side close to each other, and a spring 2 is fixedly connected to the top of the support plate. There are three springs 2, and the tops of the three springs 2 are fixedly connected to the bottom of the metal sheet. By setting the spring 2, the device can operate normally to make the metal sheet contact with the bottom of the electromagnetic solenoid.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model sets a holding component, specifically, the handle is rotated clockwise to drive the bidirectional threaded rod to rotate. When the bidirectional threaded rod continues to rotate, the sides of the two holding blocks close to each other will be inserted into the second groove opened inside the iron core so that the iron core can be fixed, so that the staff does not need to prepare an additional power supply when checking the circuit breaker, so that the staff can quickly and conveniently check the circuit breaker, thereby improving the work efficiency of the staff.

[0015] 2. The utility model sets a power-off component. Specifically, when the circuit breaker is short-circuited, the magnetic force generated by the current passing through the electromagnetic solenoid is greater than the elastic force of the spring, so that the iron core drives the round rod to move downward, separating the top of the metal sheet from the bottom of the electromagnetic solenoid. When the circuit is short-circuited, the circuit breaker can quickly trip, avoiding damage to power lines, motors and other equipment, thereby improving the practicality of the device.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings required for describing the embodiment will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the overall structure of the back side of the utility model;

[0020] Figure 3 This is a schematic diagram of the overall structure of the bidirectional threaded rod of the utility model;

[0021] Figure 4 It is a schematic diagram of the overall structure of the iron core of the utility model;

[0022] Figure 5 It is a schematic diagram of the left side cross-sectional structure of the iron core of the utility model.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Circuit breaker body; 2. Switch; 3. Outer box; 4. Connecting plate; 5. Iron core; 6. Solenoid; 7. Round rod; 8. Spring 1; 11. Holding assembly; 111. Fixed block 1; 112. Rotating shaft; 113. Turning handle; 114. Bevel gear 1; 115. Bevel gear 2; 116. Fixed block 2; 117. Bidirectional threaded rod; 118. Sliding rod; 119. Holding block; 22. Power-off assembly; 221. Fixed plate; 222. Rotating shaft 1; 223. Metal sheet; 224. Rotating shaft 2; 225. Rotating block; 226. Support plate; 227. Spring 2. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-5 As shown, the utility model is a circuit breaker core retaining device, including a circuit breaker body 1, a switch 2 is arranged on the front of the circuit breaker body 1, an outer box 3 is fixedly connected to the top of the circuit breaker body 1, a groove 1 is opened inside the outer box 3, a connecting plate 4 is fixedly connected to the top of the inner wall of the groove 1, a power-off component 22 is arranged inside the circuit breaker body 1, a retaining component 11 is arranged above the circuit breaker body 1, the retaining component 11 includes a fixed block 111, the bottom of the fixed block 111 is fixedly connected to the top of the circuit breaker body 1, a circular groove 1 is opened inside the fixed block 111, a rotating shaft 112 is rotatably connected to the inner wall of the circular groove 1, and a turning handle 113 is fixedly connected to the front of the rotating shaft 112.

[0027] A bevel gear 114 is fixedly connected to the back of the rotating shaft 112, and a fixed block 2 116 is fixedly connected to the front of the outer box 3. There are two fixed blocks 116, and circular grooves 2 are opened inside the two fixed blocks 116. The inner walls of the two circular grooves are rotatably connected to bidirectional threaded rods 117.

[0028] A bevel gear 2 115 is fixedly connected to the center of the outer surface of the bidirectional threaded rod 117, and the front side of the bevel gear 2 115 is meshed with the back side of the bevel gear 1 14. A retaining block 119 is threadedly connected to the outer surface of the bidirectional threaded rod 117. There are two retaining blocks 119, and circular grooves 3 are provided inside the two retaining blocks 119. A sliding rod 118 is fixedly connected to the inner wall of the outer box 3, and the inner walls of the two circular grooves 3 are slidably connected to the outer surface of the sliding rod 118. By setting the retaining component 11, specifically, rotating the handle 113 clockwise to drive the bidirectional threaded rod 117 to rotate, when the bidirectional threaded rod 117 continues to rotate, the sides of the two retaining blocks 119 that are close to each other will be inserted into the groove 2 provided in the iron core 5 to fix the iron core, so that the staff does not need to prepare an additional power supply when checking the circuit breaker, so that the staff can quickly and conveniently check the circuit breaker, thereby improving the work efficiency of the staff.

[0029] A circular groove 4 is provided on the top of the connecting plate 4, a round rod 7 is slidably connected to the inner wall of the circular groove 4, an iron core 5 is fixedly connected to the top of the round rod 7, a groove 2 is provided inside the iron core 5, and the bottom of the round rod 7 passes through the connecting plate 4 and extends to the outside.

[0030] The outer surface of the iron core 5 is sleeved with an electromagnetic solenoid 6, the outer surface of the round rod 7 is sleeved with a spring 8, the top of the spring 8 is fixedly connected to the bottom of the iron core 5, and the bottom of the spring 8 is fixedly connected to the top of the connecting plate 4.

[0031] The power-off assembly 22 includes two fixing plates 221. The front and bottom of the two fixing plates 221 are fixedly connected to the inner wall of the circuit breaker body 1. The sides of the two fixing plates 221 close to each other are fixedly connected to a rotating shaft 222, and the outer surface of the rotating shaft 222 is rotatably connected to a metal sheet 223.

[0032] The top of the metal sheet 223 contacts the bottom of the electromagnetic solenoid 6, and the sides of the two fixed plates 221 that are close to each other are fixedly connected with the second rotating shaft 224. The outer surface of the second rotating shaft 224 is rotatably connected with a rotating block 225, and the bottom of the rotating block 225 contacts the top of the metal sheet 223. By setting the power-off component 22, specifically when the circuit breaker is short-circuited, the magnetic force generated by the current passing through the electromagnetic solenoid 6 is greater than the elastic force of the spring 1 8, so that the iron core 5 drives the round rod 7 to move downward, separating the top of the metal sheet 223 from the bottom of the electromagnetic solenoid 6, so that when the circuit is short-circuited, the circuit breaker can quickly trip, thereby avoiding damage to power lines, motors and other equipment, and improving the practicability of the device.

[0033] The two fixing plates 221 are fixedly connected to a support plate 226 on one side close to each other, and a spring 227 is fixedly connected to the top of the support plate 226. There are three springs 227, and the tops of the three springs 227 are fixedly connected to the bottom of the metal sheet 223.

[0034] A specific application of this embodiment is: when the staff needs to check the circuit breaker, the clockwise rotation of the handle 113 drives the rotating shaft 112 to rotate. When the rotating shaft 112 rotates, it drives the bevel gear 114 to rotate, so that it drives the bidirectional threaded rod 117 to rotate through the bevel gear 2 115. When the bidirectional threaded rod 117 rotates, it drives the retaining blocks 119 on the left and right sides of the outer surface of the bidirectional threaded rod 117 to approach each other. When the bidirectional threaded rod 117 continues to rotate, the sides of the two retaining blocks 119 that are close to each other will be inserted into the groove 2 opened inside the iron core 5. The plug-in parts of the two retaining blocks 119 and the groove 2 are made of plastic material. When the retaining block 119 moves, the inner wall of the circular groove 3 opened inside the inner wall of ... After the inner wall of the groove is cut, the circuit voltage of the circuit breaker is disconnected, and the circuit breaker will trip. Since the iron core 5 is fixed in place by two retaining blocks 119, the circuit breaker will not trip, so that the staff does not need to prepare another power supply when checking the circuit breaker, so that the staff can quickly check the circuit breaker, which improves the work efficiency of the staff. When the circuit breaker is short-circuited, the current passing through the electromagnetic solenoid 6 will increase by a thousand times in an instant, so that the magnetic force generated by the current is greater than the elastic force of the spring 1 8, so that the iron core 5 drives the round rod 7 to move downward. During the movement of the round rod 7, the rotating block 225 will be driven to rotate downward, pushing the metal sheet 223 to rotate clockwise to separate the top of the metal sheet 223 from the bottom of the electromagnetic solenoid 6, so that when the circuit is short-circuited, the circuit breaker can quickly trip, avoiding damage to power lines, motors and other equipment, and improving the practicality of the device.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A circuit breaker core retaining device, comprising a circuit breaker body (1), a switch (2) being arranged on the front of the circuit breaker body (1), an outer box (3) being fixedly connected to the top of the circuit breaker body (1), a groove (1) being provided inside the outer box (3), a connecting plate (4) being fixedly connected to the top of the inner wall of the groove (1), a power-off assembly (22) being arranged inside the circuit breaker body (1), and characterized in that: A retaining assembly (11) is arranged above the circuit breaker body (1); The retaining assembly (11) comprises a fixing block (111), the bottom of which is fixedly connected to the top of the circuit breaker body (1), a circular groove (1) is provided inside the fixing block (111), a rotating shaft (112) is rotatably connected to the inner wall of the circular groove, and a turning handle (113) is fixedly connected to the front of the rotating shaft (112).

2. A circuit breaker core retaining device according to claim 1, characterized in that: The back of the rotating shaft (112) is fixedly connected to a bevel gear 1 (114), and the front of the outer box (3) is fixedly connected to a fixed block 2 (116). There are two fixed blocks 2 (116). A circular groove 2 is formed inside the two fixed blocks 2 (116). The inner walls of the two circular grooves 2 are rotatably connected to a bidirectional threaded rod (117).

3. A circuit breaker core retaining device according to claim 2, characterized in that: A bevel gear 2 (115) is fixedly connected at the center of the outer surface of the bidirectional threaded rod (117), and the front of the bevel gear 2 (115) is meshed with the back of the bevel gear 1 (114). A retaining block (119) is threadedly connected to the outer surface of the bidirectional threaded rod (117). There are two retaining blocks (119). Circular grooves 3 are provided inside the two retaining blocks (119). A sliding rod (118) is fixedly connected to the inner wall of the outer box (3), and the inner walls of the two circular grooves 3 are slidably connected to the outer surface of the sliding rod (118).

4. A circuit breaker core retaining device according to claim 1, characterized in that: A circular groove four is provided at the top of the connecting plate (4), a round rod (7) is slidably connected to the inner wall of the circular groove four, an iron core (5) is fixedly connected to the top of the round rod (7), a groove two is provided inside the iron core (5), and the bottom of the round rod (7) passes through the connecting plate (4) and extends to the outside.

5. A circuit breaker core retaining device according to claim 4, characterized in that: The outer surface of the iron core (5) is sleeved with an electromagnetic solenoid (6), and the outer surface of the round rod (7) is sleeved with a spring (8), the top of the spring (8) is fixedly connected to the bottom of the iron core (5), and the bottom of the spring (8) is fixedly connected to the top of the connecting plate (4).

6. A circuit breaker core retaining device according to claim 1, characterized in that: The power disconnecting assembly (22) comprises a fixing plate (221), wherein the fixing plates (221) are two in number, the front and bottom of the two fixing plates (221) are fixedly connected to the inner wall of the circuit breaker body (1), the sides of the two fixing plates (221) close to each other are fixedly connected to a rotating shaft 1 (222), and the outer surface of the rotating shaft 1 (222) is rotatably connected to a metal sheet (223).

7. A circuit breaker core retaining device according to claim 6, characterized in that: The top of the metal sheet (223) contacts the bottom of the electromagnetic solenoid (6); the two sides of the two fixed plates (221) close to each other are fixedly connected to the second rotating shaft (224); the outer surface of the second rotating shaft (224) is rotatably connected to a rotating block (225); the bottom of the rotating block (225) contacts the top of the metal sheet (223).

8. A circuit breaker core retaining device according to claim 7, characterized in that: The two fixing plates (221) are fixedly connected to a support plate (226) on one side close to each other, and a spring 2 (227) is fixedly connected to the top of the support plate (226). There are three springs 2 (227), and the tops of the three springs 2 (227) are fixedly connected to the bottom of the metal sheet (223).

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