Tripping mechanism of switch

Abstract

A tripping mechanism of a switch belongs to the technical field of low-voltage apparatuses. Comprising a tripping assembly and a reset assembly, the tripping assembly carries out a tripping action, and the reset assembly is used for resetting the tripping assembly; the tripping assembly comprises an electromagnet, the electromagnet triggers the tripping assembly to act, the reset assembly comprises a driving plate, and is characterized by further comprising a reset piece, the reset piece is elastically arranged on the driving plate, and when the driving plate acts, the reset piece is driven to act, and the reset piece is driven by the electromagnet to act. And the reset piece is used for resetting the electromagnet. The electromagnet has the advantages that the reset piece is elastically arranged, the impact of the reset piece on the electromagnet is reduced, and the service life of the electromagnet is longer.

Description

TECHNICAL FIELD

[0001] The utility model belongs to low voltage electrical apparatus technical field, specifically related to a switch's tripping mechanism. BACKGROUND

[0002] Switch as a kind of electrical component for providing safety guarantee for circuit, usually including tripping mechanism, operating mechanism and contact etc. When circuit is in overload, short-circuit fault state etc., tripping mechanism will receive controller instruction, unblock tripping device by electromagnet and drive operating mechanism to realize opening, make moving contact and static contact separate, thereby realize the overload protection or short-circuit protection to circuit.

[0003] But electromagnet needs a reliable reset device after performing work, to ensure that circuit failure still can be reliably unlocked next time. Therefore, there is an urgent need for a reset device, it has high reliability, can guarantee the reliable completion of reset action. UTILITY MODEL CONTENT

[0004] The utility model discloses the task is to provide a kind of switch's tripping mechanism, it is reset to tripping assembly by reset component, reset component adopts reset piece and is reset to electromagnet of tripping assembly, the reset piece is elastically arranged, reduce the impact of reset piece to electromagnet, so that electromagnet has higher life.

[0005] The utility model discloses the task is thus completed, a kind of switch's tripping mechanism, including tripping assembly and reset component, the tripping assembly carries out tripping action, and the reset component is used to reset the tripping assembly;The tripping assembly includes electromagnet, the electromagnet triggers the action of the tripping assembly, the reset component includes drive plate, and the characteristics are:still include reset piece, the reset piece is elastically arranged on the drive plate, when the drive plate is actuated and drives the reset piece to act, the reset piece is used to reset the electromagnet.

[0006] In a specific embodiment of the utility model, the reset component further includes a reset part, a first mounting plate and a second mounting plate, the reset part further includes a first elastic member, the first mounting plate and the second mounting plate are fixed on the drive plate in a spaced apart manner in the up-down direction, the reset piece is slidingly arranged on the first mounting plate and the second mounting plate, and a limiting structure for keeping the reset piece in a predetermined position is arranged between at least one of the first mounting plate, the drive plate and the second mounting plate and the reset piece, and the first elastic member provides an elastic driving force for upward sliding of the reset piece.

[0007] In one specific embodiment of the utility model, the reset member includes a cylinder, first flange and second flange are arranged at intervals on the cylinder, the second flange and the first mounting plate constitute the limiting structure, one end of the first elastic member abuts against the first flange, and the other end abuts against the second mounting plate.

[0008] In another specific embodiment of the utility model, the first flange and the second flange are both annular, the head of the reset member matched with the electromagnet is flat, and the head passes through the first mounting plate.

[0009] In still another specific embodiment of the utility model, the first mounting plate includes a fixed part and an extension part, the fixed part and the extension part are bent, a through hole is arranged on the extension part, and the head passes through the through hole.

[0010] In still another specific embodiment of the utility model, the electromagnet includes an action rod, and the surface of the head matched with the action rod is spherical.

[0011] In still another specific embodiment of the utility model, the trip assembly further includes an amplification mechanism and a trigger, the electromagnet triggers the action of the amplification mechanism, the amplification mechanism triggers the action of the operating mechanism of the switch through the trigger after action, and the second mounting plate is used for resetting the amplification mechanism.

[0012] In still another specific embodiment of the utility model, a spring is arranged on the reset assembly, the other end of the spring is connected with other components of the switch, the spring provides elastic force, drives the reset assembly to reset, and returns to the initial state before the reset action.

[0013] In still another specific embodiment of the utility model, an expansion groove is further arranged on the through hole.

[0014] In still another specific embodiment of the utility model, the first mounting plate and the second mounting plate are arranged as a whole and form a "L" shape.

[0015] The utility model has the beneficial effects that: the reset assembly is used to reset the trip assembly, the reset member is used to reset the electromagnet of the trip assembly, the reset member is elastically arranged, the impact of the reset member on the electromagnet is reduced, and the electromagnet has a longer service life. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of the switch.

[0017] Figure 2 A three-dimensional structure schematic view of the tripping mechanism cooperating with the main shaft according to the present application is shown in the figure;

[0018] Figure 3 A state schematic view of the tripping mechanism cooperating with the main shaft according to the present application is shown in the figure;

[0019] Figure 4 Another state schematic view of the tripping mechanism cooperating with the main shaft according to the present application is shown in the figure;

[0020] Figure 5 A structure schematic view of the reset assembly cooperating with the tripping electromagnet according to the present application is shown in the figure;

[0021] Figure 6 A structure schematic view of the tripping electromagnet according to the present application is shown in the figure;

[0022] Figure 7 A structure schematic view of the reset push rod assembly according to the present application is shown in the figure;

[0023] Figure 8 A structure schematic view of the first mounting plate according to the present application is shown in the figure;

[0024] Figure 9 A partial structure schematic view of the reset push rod assembly according to the present application is shown in the figure;

[0025] Figure 10 A structure schematic view of the main shaft according to the present application is shown in the figure.

[0026] In the figure: 1. tripping mechanism, 11. side plate, 12. tripping assembly, 121. electromagnet, 1211. action rod, 1212. buffer spring, 1213. electromagnet shell, 122. amplification mechanism, 123. trigger piece, 13. reset assembly, 131. driving plate, 1311. driving piece, 1312. connecting hole, 132. reset component, 1321. reset piece, 13211. column body, 13212. first flange, 13213. second flange, 13214. head, 132141. spherical surface, 1322. first elastic piece, 133. first mounting plate, 1331. fixed part, 13311. fixed hole, 1332. extension part, 13321. through hole, 13322. enlarged slot, 134. second mounting plate, 1341. cooperating hole; 2. main shaft, 21. driving piece; 3. base. DETAILED DESCRIPTION

[0027] The specific embodiments of the present application are described in detail below with reference to the accompanying drawings, but the description of the embodiments is not a limitation of the technical solutions, and any formal but not substantial changes according to the concept of the present application should be regarded as the protection scope of the present application.

[0028] In the following description, the concepts of up, down, left, right, front and back (or orientation) are directed to the position state of the figure being described, and are intended to facilitate the public understanding, and therefore cannot be understood as a special limitation on the technical solutions provided by the utility model.

[0029] As Figure 1 , the switch includes an operating mechanism (not shown), a contact system (not shown), a tripping mechanism 1, a main shaft 2 and a base 3. The base 3 is spliced with the bottom plate to form a contact containing cavity inside the circuit breaker. The contact system is placed in the contact containing cavity. The operating mechanism, the tripping mechanism 1 and the main shaft 2 are all installed on the base 3. When the controller of the circuit breaker detects an abnormal current, the controller triggers the tripping mechanism 1 to act, and the tripping mechanism 1 triggers the operating mechanism to act. After the operating mechanism acts, the main shaft 2 drives the contact system to perform the opening operation.

[0030] As Figure 2 , the tripping mechanism 1 includes a pair of side plates 11, a tripping assembly 12 and a reset assembly 13 installed between the pair of side plates 11. The tripping assembly 12 is used to perform the tripping action, i.e. to trigger the operating mechanism to perform the tripping action, and the reset assembly 13 is used to reset the tripping assembly 12 so that it can perform the next tripping action. Specifically, the reset assembly 13 is driven by the main shaft 2 to perform the reset action, i.e. when the circuit breaker is closed, the main shaft 2 rotates from the open state to the closed state, and in the process, the reset assembly 13 is actuated.

[0031] The tripping assembly 12 includes an electromagnet 121, an amplification mechanism 122 and a trigger 123. The electromagnet 121 is triggered in cooperation with the amplification mechanism 122, and the amplification mechanism 122 actuates the operating mechanism through the trigger 123. That is, the electromagnet 121 acts as the trigger of the tripping assembly 12, which triggers the entire tripping assembly 12 to act.

[0032] As Figure 3 is a schematic view of the tripping mechanism 1 in the tripping state. The electromagnet 121 is in the state after the action, i.e. the action rod of the electromagnet 121 is in the extended state. At this time, the reset assembly 13 is in the inaction state.

[0033] As Figure 4, the main shaft 2 and the contact system are in the closed state. In the process of switching to the closed state, the main shaft 2 rotates to drive the reset component 13 to act. The reset component 13 acts to reset the electromagnet 121 and the amplification mechanism 122. Specifically, the reset component 13 moves upward along the first direction shown in the figure.

[0034] The reset component 13 includes a driving plate 131, a reset part 132, a first mounting plate 133 and a second mounting plate 134. The first mounting plate 133 and the second mounting plate 134 are both mounted on the driving plate 131. The reset part 132 is arranged on the driving plate 131 through the first mounting plate 133 and the second mounting plate 134. The reset part 132 is used to reset the electromagnet 121, and the second mounting plate 134 is used to reset the amplification mechanism 122. Preferably, in the second direction shown in the figure, the first mounting plate 133 and the second mounting plate 134 are both located on the same side of the driving plate 131.

[0035] As Figure 5 The driving plate 131 is provided with a driving piece 1311, which has elasticity and is used to cooperate with the main shaft 2.

[0036] The reset part 132 includes a reset piece 1321 and a first elastic piece 1322. The first mounting plate 133 is fixed on the driving plate 131, and the reset piece 1321 is slidingly arranged on the first mounting plate 133 and the second mounting plate 134. Specifically, the reset piece 1321 passes through the first mounting plate 133, one end of the first elastic piece 1322 abuts against the reset piece 1321, and the other end abuts against the second mounting plate 134. The first elastic piece 1322 provides the reset piece 1321 with an elastic driving force for upward sliding. The first mounting plate 133 and the second mounting plate 134 are arranged in a spaced manner in the upward-downward direction, which is the first direction. The first mounting plate 133 and the second mounting plate 134 jointly install and limit the reset piece 1321. Preferably, the reset piece 1321 passes through the first mounting plate 133 in the first direction shown in the figure, and the first elastic piece 1322 also abuts against the reset piece 1321 at one end and abuts against the second mounting plate 134 at the other end in the first direction. Due to the arrangement of the first elastic piece 1322, when the reset piece 1321 pushes the electromagnet 121, it has the effect of preventing impact, preventing the electromagnet 121 from being damaged due to impact, and improving the service life of the electromagnet 121.

[0037] The limiting structure is arranged between the first mounting plate 133 and the reset member 1321, and is used for keeping the reset member 1321 in a predetermined position. In the embodiment, the predetermined position refers to the position of the reset member 1321 relative to the driving plate 131, i.e. the limit position of upward movement.

[0038] The first elastic member 1322 and the limiting structure make the reset member 1321 form a monostable state, and when no external force is applied, the reset member 1321 is in the position of the upper end in the first direction.

[0039] As shown in Figure 6 , the electromagnet 121 is a conventional monostable magnet, which comprises an action rod 1211, a buffer spring 1212 and an electromagnet shell 1213. The buffer spring 1212 is arranged between the action rod 1211 and the electromagnet shell 1213, and provides elastic force for the action rod 1211.

[0040] As shown in Figure 7 , the reset member 1321 comprises a column body 13211, and a first flange 13212 and a second flange 13213 are arranged on the column body 13211 in a spaced manner. The first flange 13212 and the second flange 13213 are both annular. The head 13214 of the reset member 1321 which cooperates with the electromagnet 121 is flat.

[0041] More specifically, the first elastic member 1322 is arranged between the first flange 13212 and the second mounting plate 134. The second flange 13213 abuts against the first mounting plate 133. During the process of resetting the electromagnet 121 by the reset member 1321, when the first elastic member 1322 is compressed, the second flange 13213 is disengaged from the abutting relationship with the first mounting plate 133. That is, the reset member 1321 and the first mounting plate 133 have a sliding relationship in the relative position.

[0042] As shown in Figure 8 , the first mounting plate 133 is made of a metal plate by bending processing. The first mounting plate 133 comprises a fixed portion 1331 and a protruding portion 1332. The fixed portion 1331 and the protruding portion 1332 are bent, i.e. they are arranged at an angle, preferably, they are bent at a right angle.

[0043] The fixed hole 13311 is arranged on the fixed part 1331. The through hole 13321 is arranged on the extending part 1332, and the head part 13214 passes through the through hole 13321. In order to ensure the flexibility of the sliding fit, the enlarged slot 13322 is arranged on the through hole 13321.

[0044] When the head part 13214 passes through the through hole 13321, the second flange 13213 is located below the extending part 1332. The second flange 13213 abuts against the first mounting plate 133 to form the limiting structure, so as to keep the reset part 1321 in the predetermined position.

[0045] In order to better realize the cooperation between the reset part 1321 and the action rod 1211 of the electromagnet 121, the surface of the head part 13214 of the reset part 1321 that cooperates with the action rod 1211 is a spherical surface 132141.

[0046] As shown in Figure 9 , the driving plate 131 is further provided with the connecting hole 1312 which is fixedly installed with the fixed part 1331 on the first mounting plate 133. The second mounting plate 134 is provided with the cooperation hole 1341 which cooperates with the reset part 1321. The end of the reset part 1321 close to the second mounting plate 134 has the positioning end which cooperates with the cooperation hole 1341, and the two are connected in sliding mode.

[0047] As shown in Figure 10 , the main shaft 2 has the driving part 21 which is fixed on the main shaft 2 and moves together with the main shaft 2 after the main shaft 2 rolls. The driving part 21 is used to push and pull the driving piece 1311, that is, the driving part 21 rotates synchronously after the main shaft 2 rotates, and drives the driving plate 131 to move by pushing the driving piece 1311. Figure 3 When the state is switched to Figure 4 , the main shaft 2 rotates clockwise, and drives the reset assembly 13 to move upward in the first direction. After the movement is completed, when the main shaft 2 rotates counterclockwise, the reset assembly 13 is installed with a spring, the other end of the spring is connected with other parts of the switch, and the spring provides elastic force to drive the reset assembly 13 to reset to the initial state before the reset action.

[0048] In the above embodiment, the two ends of the first elastic member 1322 act on the reset member 1321 and the second mounting plate 134, respectively. Alternatively, the two ends of the first elastic member 1322 act on the reset member 1321 and the first mounting plate 133, respectively. Alternatively, one end of the first elastic member 1322 acts on the reset member 1321, and the other end is connected to another component. As long as the first elastic member 1322 provides the elastic driving force for the upward sliding of the reset member 1321.

[0049] In the above embodiment, the limit structure is arranged between the first mounting plate 133 and the reset member 1321 to keep the reset member 1321 in a predetermined position. Alternatively, the limit structure is arranged between the reset member 1321 and the driving plate 131, or between the reset member 1321 and the second mounting plate 134. Alternatively, the limit structure is arranged between the reset member 1321 and two or three of the first mounting plate 133, the driving plate 131, and the second mounting plate 134.

[0050] In the above embodiment, the first mounting plate 133 and the second mounting plate 134 are two separate parts. Alternatively, the first mounting plate 133 and the second mounting plate 134 are integrated into one "L" shape.

[0051] In the above embodiment, the reset member 1321 is a columnar body, usually a metal column, which has good rigidity and prevents deformation. The reset member 1321 is in sliding fit with the driving plate 131, and cooperates with the first elastic member 1322 to make the reset member 1321 elastic and reduce the impact of the reset member 1321 on the electromagnet 121. Alternatively, the reset member 1321 itself is elastic, for example, the reset member 1321 is a spring or is made of elastic material. In this case, the reset member 1321 is arranged on the driving plate 131, i.e., the two are in fixed mounting relationship. This description and other embodiments can be summarized as: the reset member 1321 is elastically arranged on the driving plate 131. That is, the elastic arrangement of the reset member 1321 on the driving plate 131 includes the following cases: the reset member 1321 itself is elastic and is fixedly arranged on the driving plate 131, or the reset member 1321 is not elastic and is arranged on the driving plate 131 by the first elastic member 1322, or the reset member 1321 itself is elastic and is arranged on the driving plate 131 by the first elastic member 1322.

Claims

1. A tripping mechanism for a switch, comprising a tripping assembly (12) and a reset assembly (13), wherein the tripping assembly (12) performs a tripping action, and the reset assembly (13) is used to reset the tripping assembly (12); the tripping assembly (12) includes an electromagnet (121), the electromagnet (121) triggers the action of the tripping assembly (12), and the reset assembly (13) includes a drive plate (131), characterized in that: It also includes a reset member (1321), which is elastically disposed on the drive plate (131). When the drive plate (131) moves, it drives the reset member (1321) to move. The reset member (1321) is used to reset the electromagnet (121).

2. The tripping mechanism of a switch according to claim 1, characterized in that: The reset assembly (13) further includes a reset component (132), a first mounting plate (133), and a second mounting plate (134). The reset component (132) further includes a first elastic element (1322). The first mounting plate (133) and the second mounting plate (134) are fixed on the drive plate (131) at intervals in the vertical direction. The reset component (1321) is slidably disposed on the first mounting plate (133) and the second mounting plate (134). At least one of the first mounting plate (133), the drive plate (131), and the second mounting plate (134) is provided with a limiting structure between itself and the reset component (1321) to keep the reset component (1321) in a predetermined position. The first elastic element (1322) provides an elastic driving force for the reset component (1321) to slide upward.

3. The tripping mechanism of a switch according to claim 2, characterized in that: The reset member (1321) includes a column (13211), on which a first flange (13212) and a second flange (13213) are spaced apart. The second flange (13213) and the first mounting plate (133) constitute the limiting structure. One end of the first elastic member (1322) abuts against the first flange (13212), and the other end abuts against the second mounting plate (134).

4. The tripping mechanism of a switch according to claim 3, characterized in that: The first flange (13212) and the second flange (13213) are both annular. The head (13214) of the reset member (1321) that cooperates with the electromagnet (121) is flat and passes through the first mounting plate (133).

5. The tripping mechanism of a switch according to claim 4, characterized in that: The first mounting plate (133) includes a fixing part (1331) and a protruding part (1332), which are bent together. A through hole (13321) is provided on the protruding part (1332) for the head (13214) to pass through.

6. The tripping mechanism of a switch according to claim 5, characterized in that: The electromagnet (121) includes an actuating rod (1211), and the surface of the head (13214) that mates with the actuating rod (1211) is a spherical surface (132141).

7. The tripping mechanism of a switch according to claim 2, characterized in that: The tripping assembly (12) further includes an amplification mechanism (122) and a trigger (123). The electromagnet (121) triggers the amplification mechanism (122) to operate, and after the amplification mechanism (122) operates, it triggers the operation mechanism of the switch through the trigger (123). The second mounting plate (134) is used to reset the amplification mechanism (122).

8. The tripping mechanism of a switch according to claim 1, characterized in that: A spring is installed on the reset assembly (13), and the other end of the spring is connected to other parts of the switch. The spring provides elastic force to drive the reset assembly (13) to reset and return to its initial state before the reset action.

9. The tripping mechanism of a switch according to claim 5, characterized in that: An enlarged groove (13322) is also provided on the through hole (13321).

10. The tripping mechanism of a switch according to claim 2, characterized in that: The first mounting plate (133) and the second mounting plate (134) are integrated to form a "]" shape.

Images