Multifunctional convenient auxiliary alarm contact

Abstract

A multifunctional convenient auxiliary alarm contact includes a shell, at least one set of contact module and a driving mechanism. The shell is symmetrically provided with mounting positions on both sides; the contact module is arranged in any side mounting position and includes three wiring terminals and a reciprocating swing movable contact piece. One end of the movable contact piece is connected with the first wiring terminal, and the other end is selectively contacted with the second or third wiring terminal to realize the circuit on-off state conversion. The driving mechanism includes the first transmission member and the second transmission member which are connected or relatively moved. The movement planes of the two members at least partially overlap, and the power is transmitted through the collision structure in the overlapping area. The first transmission member is provided with the first touch part which drives a movable contact piece, and the second transmission member is provided with the second touch part which drives another movable contact piece. By increasing or reducing the contact module or replacing the transmission member and handle module, the OF, SD, 2NC, 1NO1NC, OF+SD, OF+OF multiple functions can be realized, the universality is improved, and the material and production complexity are reduced.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, specifically to a multifunctional and convenient auxiliary alarm contact. Background Technology

[0002] Auxiliary contact devices are the most common type of electrical device in the auxiliary units of circuit breakers. Common auxiliary contact devices have one set of normally open and normally closed functions. For situations where the circuit breaker indicates the opening and closing of two circuits, two auxiliary contacts are required.

[0003] Meanwhile, existing auxiliary contact devices generally have functions such as OF, SD, OF+OF, and OF+SD. However, different auxiliary contact devices are required to achieve different functions, which leads to manufacturers needing to stockpile and develop parts for different auxiliary contact devices, resulting in high costs. Furthermore, different auxiliary contact devices require specific changes to the production process during assembly, leading to reduced assembly efficiency.

[0004] Therefore, there is an urgent need for a universal housing structure for auxiliary contact devices with different functions to reduce production costs and improve assembly efficiency. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a multifunctional and convenient auxiliary alarm contact.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A multifunctional and convenient auxiliary alarm contact, comprising: The housing has mounting positions symmetrically provided at both ends; At least one set of contact modules is disposed in the mounting position at any end of the housing. The contact module includes three terminals and a movable contact piece that can reciprocate. One end of the movable contact piece is electrically connected to the first terminal, and the other end can selectively contact the second or third terminal to realize the switching of the circuit on / off state. The drive mechanism, disposed within the housing, includes a first transmission component and a second transmission component capable of linkage or relative movement; Wherein, the motion planes of the first transmission member and the second transmission member at least partially overlap, and the two achieve power transmission through a collision structure located in the overlapping area; The first transmission member is provided with a first actuating part for driving one of the moving contact pieces to move, and the second transmission member is provided with a second actuating part for driving the other moving contact piece to move.

[0007] The collision structure includes a first collision member and a second collision member respectively formed on the first transmission member and the second transmission member, and the mating surfaces of the two are matched.

[0008] A reset element is provided between the second transmission component and the housing.

[0009] The drive mechanism further includes a handle assembly rotatably disposed within the housing. The handle assembly includes a handle that moves in conjunction with or relative to the handle and a handle reset component. A first torsion spring is provided on the handle, and the two ends of the first torsion spring are respectively connected to the handle and the handle reset component.

[0010] The handle has a handle groove on its lower side, and the second transmission member has a hanging arm, which can be engaged with the handle groove to restrict the rotation of the second transmission member.

[0011] The handle reset component can rotate relative to the handle to release the overlap between the hanging arm and the handle slot.

[0012] The first transmission component is also provided with a locking buckle and a snap fastener that cooperate with each other. The surface of the locking buckle is provided with an annular protrusion, and the circumference of the annular protrusion forms a groove for accommodating the second torsion spring. One side of the groove is provided with a stepped notch to hook one end of the second torsion spring. The first transmission component is also provided with a hook to restrict the other end of the second torsion spring, and is also provided with a boss for the locking buckle to rest against the boss by the force of the second torsion spring to form a limiting structure.

[0013] The surface of the terminal block has a striped structure.

[0014] The circuit breaker latch of the housing is provided with a slot structure.

[0015] The second transmission component is provided with at least two hooks for holding the reset component.

[0016] The beneficial effects of this utility model are as follows: Through the design of the first and second transmission components and the symmetrical contact module, the entire auxiliary alarm contact can achieve multi-functional versatility. By adding or removing contact modules or replacing the second transmission component and handle module, conventional OF, SD, auxiliary contact 2NC, auxiliary contact 1NO1NC, integrated auxiliary alarm OF+SD, and dual auxiliary OF+OF functions can be realized, which is convenient for interchangeability and reduces the complexity of materials and production. At the same time, by utilizing the collision structure in the overlapping motion plane of the first and second transmission components, the contact reliability between contacts is improved when the product is opened, and the intermittent connection situation is greatly reduced. Attached Figure Description Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is an internal schematic diagram of Embodiment 1 of the present invention.

[0018] Figure 3 This is an internal schematic diagram of Embodiment 2 of the present invention.

[0019] Figure 4 This is a cross-sectional schematic diagram of the collision structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the structure of the first transmission component of this utility model.

[0021] Figure 6 This is a schematic diagram of the structure of the second transmission component of this utility model.

[0022] Figure 7 and Figure 8 These are schematic diagrams of the two sides of the handle module of this utility model.

[0023] Figure 9 This is a schematic diagram of the structure of the latch of this utility model.

[0024] Figure 10 and Figure 11 These are schematic diagrams of the two sides of the first transmission component of this utility model.

[0025] Figure 12 This is a schematic diagram of the first transmission component of this utility model during assembly.

[0026] Figure 13 This is a schematic diagram of the structure of one of the terminals of this utility model. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] This utility model discloses a multifunctional and convenient auxiliary alarm contact, which includes contact modules arranged on both sides. The two sets of contact modules are symmetrically arranged, and each set of contact modules has three terminals and one moving contact piece. The symmetrical arrangement of the terminals in each set can save on the amount of materials required. Using two sets of contact modules can realize OF+OF or OF+SD functions, while using one set of contact modules can realize OF or SD functions. The symmetrical design of the terminals can reduce the complexity of materials and production.

[0030] The multifunctional and convenient auxiliary alarm contact includes a housing 100, a contact module and a drive mechanism disposed at one or both ends of the housing, wherein the contact module includes three terminals 200 and a reciprocating movable contact piece 240. One end of the movable contact piece 240 is electrically connected to the first terminal 210, and the other end can selectively contact the second terminal 220 or the third terminal 230 to realize the switching of the circuit on / off state.

[0031] The drive mechanism is located inside the housing and includes a first transmission member 300 and a second transmission member 400 that can move in conjunction or relative to each other. The second transmission member has an indication function, that is, its upper part passes through the housing and realizes status indication when it rotates. The motion planes of the first transmission member 300 and the second transmission member 400 overlap at least partially, and the two achieve power transmission through a collision structure 700 located in the overlapping area. The first transmission member 300 is provided with a first actuating part 310 for driving one of the moving contact pieces 240 to move, such as Figure 5 As shown, the second transmission member 400 is provided with a second actuating part 410 for driving the other moving contact piece 240 to actuate, such as... Figure 6 As shown.

[0032] When there are two contact modules, the first transmission member drives one of the moving contact pieces to move relative to each other through the first actuating part, so that the first terminal is switched between being connected to the second terminal and being connected to the third terminal. Similarly, the second transmission member drives the other moving contact piece to move relative to each other through the second actuating part.

[0033] If there is only one contact module, it is preferable to place the contact module on the left side, and then use the second transmission component to drive the corresponding moving contact piece to achieve opening and closing.

[0034] like Figure 4As shown, the collision structure 700 includes a first collision member 710 and a second collision member 720 respectively formed on the first transmission member 300 and the second transmission member 400, with their mating surfaces matching. The two collision members extend towards each other and have a mating surface, preferably an arc surface, one concave and one convex, to achieve close contact. A reset member 600 is provided between the second transmission member 400 and the housing 100. The reset member 600 is a tension spring. When the first transmission member moves to the left, the first transmission member contacts the second collision member through the first collision member and drives them to move towards each other. When the second transmission member moves to the right, the second transmission member contacts the first collision member through the second collision member and drives them to move towards each other. The tension spring design helps to quickly open and return to the starting position and ensures effective contact between the two.

[0035] like Figure 3 As shown, it discloses Embodiment 2, which has OF+OF function. In order to achieve a single OF function, it is only necessary to remove the contact module on the right side.

[0036] like Figure 2 As shown, Embodiment 1 is disclosed, which has OF+SD function. In order to achieve a single SD function, the contact module on the right side can be removed.

[0037] Meanwhile, the difference between Embodiment 1 and Embodiment 2 is that the second transmission component was replaced (i.e., the second transmission component had its hanging arm removed) and the handle reset component was removed.

[0038] The driving mechanism further includes a handle assembly 500 rotatably disposed within the housing 100. The handle assembly 500 includes a handle 510 that moves in conjunction with or relative to the handle and a handle reset member 520. The handle 510 is provided with a first torsion spring 530, and the two ends of the first torsion spring 530 are respectively connected to the handle 510 and the handle reset member 520.

[0039] Among them, such as Figure 7 and Figure 8 As shown, the first torsion spring is sleeved inside the handle, with the handle's rotation axis as the center. At the same time, a first hook 512 is provided on the outer periphery of the handle to limit one end of the first torsion spring, and a first protrusion 513 is provided on the surface of the handle to limit the other end of the first torsion spring. Through the cooperation of the two, the first torsion spring is directly limited on the handle, forming a pre-installed position, which is convenient for installation into the housing. A side wall 130 is provided on the left side of the housing, and one end of the first torsion spring forms a force with the side wall, which can effectively improve the assembly efficiency and solve the problem that the handle spring is easy to pop out or difficult to install in the past. At the same time, the handle reset component is provided on the other side of the handle, and its outer periphery extends towards the other side of the handle to form a second hook 523. When the handle reset component rotates, the second hook will drive the first torsion spring to move, realizing energy storage.

[0040] The handle 510 has a handle groove 511 on its lower side, and the second transmission member 400 has a hanging arm 420, which can be engaged with the handle groove 511 to restrict the rotation of the second transmission member 400.

[0041] The handle reset member 520 can rotate relative to the handle 510 to release the overlap between the hanging arm 420 and the handle groove 511.

[0042] Closed state When the handle is in the closed position, it is disengaged from the indicator arm (unlocked).

[0043] The first transmission component presses against the second transmission component in the closed position. The second transmission component is used as an indicator to overcome the force of the reset spring and remain in the "closed" position, without displaying a fault indication.

[0044] Fault trip status When the circuit breaker linked to it fails and trips, it will cause the latch and trip latch in the drive mechanism to disengage, resulting in the disintegration of the entire operating mechanism.

[0045] The first transmission component can no longer hold the second transmission component in place. Meanwhile, the handle remains in the closed position and has not locked the second transmission component.

[0046] At this time, the second transmission component rotates freely under the drive of the reset spring, causing the moving contact piece to switch the circuit state and display a red "fault trip" mark on its indicator terminal.

[0047] Manual tripping status When the user manually operates the handle to open the circuit breaker, the rotation of the handle will engage with the hanging arm of the second transmission component through the handle groove on it, thereby locking the second transmission component.

[0048] Although the first transmission component also resets and no longer blocks the second transmission component, the second transmission component cannot move due to the mechanical lock of the handle, and the fault indicator will not be displayed. This is precisely the distinction between "manual tripping" and "fault tripping".

[0049] When a fault trips, the top of the second transmission component is pressed down to the right, and the left hanging arm of the second transmission component rotates and gets into the handle groove, keeping the second transmission component from tripping. The upper part 522 of the handle reset component is pulled up, and the tail 521 of the handle reset component is inserted into the lower end of the second transmission component hanging arm, causing the hanging arm to leave the handle groove and release the trip. Under the action of the reset spring, the second transmission component is reset.

[0050] To achieve the above effect, the handle groove is arc-shaped and its side facing the hanging arm is set as a slope. Similarly, the bottom of the hanging arm extends downward to form a piece that overlaps with the handle groove, and the surface of this piece is also sloped. The two work together to complete the overlap. At the same time, under the drive of the tail of the handle reset piece, the hanging arm can be disengaged from the handle groove to complete the unfastening action.

[0051] like Figure 5 As shown, the first transmission component 300 is also provided with a locking buckle 800 and a snap fastener 900 that cooperate with each other, such as... Figure 9 As shown, the surface of the latch 800 is provided with an annular protrusion 810, and the annular protrusion 810 forms a groove 820 around its circumference for accommodating the second torsion spring 840. A stepped notch 830 is provided on one side of the groove 820 to hook one end of the second torsion spring 840. The first transmission member 300 is provided with a hook 320 to restrict the other end of the second torsion spring 840, and is also provided with a boss 330 for the latch 800 to rest against the boss 330 by the force of the second torsion spring 840 to form a limiting structure.

[0052] The second torsion spring is secured using the stepped notch on the latch, creating a pre-installation position. The latch is then installed on the first transmission component, and the other end of the second torsion spring is pressed against the hook 320, completing the pre-installation of the latch and the first transmission component. Simultaneously, the latch's movement is restricted to the space between the boss 330 and the cylindrical surface of the housing, preventing excessive rotation and potential misalignment during assembly. When the jump catch 900 is installed, it forms a certain force-bearing engagement with the jump catch, completing the modular design before being installed into the housing, facilitating production assembly and improving assembly efficiency. like Figure 10 and Figure 11 As shown, a third torsion spring 360 is also provided at the rotating shaft of the first transmission component. A first groove 340 is provided on one side of the first transmission component, and one end of the third torsion spring is embedded in the first groove 340. A first step 350 is provided on the other side of the first transmission component, and the other end of the third torsion spring overlaps with the first step to form a pre-installation position for the third torsion spring and the first transmission component. Through the above assembly, the modular design of the latch, the buckle, and the first transmission component can be completed.

[0053] like Figure 12 As shown, a second protrusion 140 is provided on the housing. When the first transmission component is installed into the housing, the short side of the third torsion spring overlaps with the second protrusion 140 to form a force, thereby fixing the position of the entire first transmission component, which facilitates subsequent assembly and improves assembly efficiency.

[0054] The latch, the first transmission component, and the handle are modularly designed, that is, each torsion spring and its corresponding part are pre-assembled in a pre-installed position, so that each module can be easily assembled and meet the needs of automated production. In contrast, most assembly methods on the market are stacked layer by layer, which affects production efficiency and has high assembly costs.

[0055] like Figure 13 As shown, the terminal block 200 has a striped structure 250 on its surface. This striped structure is located at the connection point between the terminal block and the screw. The contact plate also has stripes, and the outer casing is secured with rivets, increasing the strength of the wiring. Compared to the older model that used a hot riveting process, this reduces the risk of wiring cracking and the production scrap rate.

[0056] like Figure 1 As shown, the circuit breaker latch 110 of the housing 100 is provided with a slot structure 120. The slot structure is provided at the circuit breaker latch on the outside of the housing to increase the toughness of the area, prevent the latch from breaking during the assembly of the circuit breaker, and facilitate disassembly. When disassembling, press down on the rightmost side of the latch by hand.

[0057] The second transmission member 400 is provided with at least two hook portions 430 for holding the reset member. One hook portion is located at the upper end and the middle of the second transmission member for holding the spring. The spring position of the middle hook portion is pre-designed. In practice, the upper hook portion is used. If the upper tension spring cannot provide sufficient force, an additional middle tension spring can be added to ultimately ensure effective contact of the moving contact plate when the mechanism is opened.

[0058] The embodiments should not be regarded as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A multifunctional and convenient auxiliary alarm contact, characterized in that: It includes: The housing (100) has mounting positions symmetrically provided at both ends; At least one set of contact modules is disposed in the mounting position at any end of the housing (100). The contact module includes three terminals (200) and a movable contact piece (240) that can reciprocate. One end of the movable contact piece (240) is electrically connected to the first terminal (210), and the other end can selectively contact the second terminal (220) or the third terminal (230) to realize the switching of the circuit on / off state. The drive mechanism, located within the housing, includes a first transmission component (300) and a second transmission component (400) capable of linkage or relative movement. The motion planes of the first transmission member (300) and the second transmission member (400) overlap at least partially, and the two achieve power transmission through a collision structure (700) located in the overlapping area. The first transmission member (300) is provided with a first actuating part (310) for driving one of the moving contact pieces (240) to move, and the second transmission member (400) is provided with a second actuating part (410) for driving the other moving contact piece (240) to move.

2. The multifunctional and convenient auxiliary alarm contact according to claim 1, characterized in that: The collision structure (700) includes a first collision member (710) and a second collision member (720) respectively formed on the first transmission member (300) and the second transmission member (400), and the mating surfaces of the two are in contact.

3. The multifunctional and convenient auxiliary alarm contact according to claim 1, characterized in that: A reset member (600) is provided between the second transmission member (400) and the housing (100).

4. The multifunctional and convenient auxiliary alarm contact according to claim 1, characterized in that: The drive mechanism further includes a handle assembly (500) rotatably disposed within the housing (100). The handle assembly (500) includes a handle (510) that moves in conjunction with or relative to the handle and a handle reset member (520). A first torsion spring (530) is provided on the handle (510), and the two ends of the first torsion spring (530) are respectively connected to the handle (510) and the handle reset member (520).

5. A multifunctional and convenient auxiliary alarm contact according to claim 4, characterized in that: The handle (510) has a handle groove (511) on its lower side, and the second transmission member (400) has a hanging arm (420), which can be engaged with the handle groove (511) to restrict the rotation of the second transmission member (400).

6. A multifunctional and convenient auxiliary alarm contact according to claim 5, characterized in that: The handle reset component (520) can rotate relative to the handle (510) to release the overlap between the hanging arm (420) and the handle slot (511).

7. A multifunctional and convenient auxiliary alarm contact according to claim 1, characterized in that: The first transmission member (300) is also provided with a locking buckle (800) and a buckle (900) that cooperate with each other. The surface of the locking buckle (800) is provided with an annular protrusion (810), and the circumference of the annular protrusion (810) forms a groove (820) for accommodating the second torsion spring (840). A stepped notch is provided on one side of the groove (820) to hook one end of the second torsion spring (840). The first transmission member (300) is provided with a hook (320) to restrict the other end of the second torsion spring (840), and is also provided with a boss (330) for the locking buckle (800) to rest against the boss (330) by the force of the second torsion spring (840) to form a limiting structure.

8. A multifunctional and convenient auxiliary alarm contact according to claim 1, characterized in that: The surface of the terminal block (200) is provided with a striped structure (250).

9. A multifunctional and convenient auxiliary alarm contact according to claim 1, characterized in that: The housing (100) has a slot structure (120) at the circuit breaker latch (110).

10. A multifunctional and convenient auxiliary alarm contact according to claim 1, characterized in that: The second transmission member (400) is provided with at least two hooks (430) for holding the reset member.

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