Hydraulic electromagnetic circuit breaker

Abstract

A hydraulic electromagnetic circuit breaker comprises a plurality of circuit breaker bodies arranged side by side, each of the circuit breaker bodies comprising a shell, the lower side of the shell being provided with two oppositely arranged current-carrying members, the current-carrying members being partially arranged through the bottom of the shell, the upper side of the shell being provided with a rotatable handle, the middle of the shell being sequentially provided with a tripping mechanism, an operating mechanism and an arc extinguishing mechanism, the operating mechanism being arranged in linkage with the handle, the tripping mechanism being electrically connected with the first current-carrying member; a linkage pin arranged between two adjacent circuit breaker bodies, the two ends of the linkage pin being respectively connected with two adjacent handles; and a plurality of splicing elements arranged between the shells of two adjacent circuit breaker bodies. The circuit breaker has a simple overall structure, the splicing elements and the linkage pin are used to splice the plurality of circuit breaker bodies, and the synchronism of handle operation is realized.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical appliances, specifically to a hydraulic electromagnetic circuit breaker. Background Technology

[0002] Hydraulic circuit breakers are renowned for their high precision and stable characteristics, and are therefore widely used. Hydraulic electromagnetic circuit breakers utilize a hydraulic electromagnetic tripping device, integrating overload and short-circuit tripping into a single structure. This results in advantages such as smaller overall size, integrated overload and short-circuit tripping, elimination of the thermal protection system, and less susceptibility to external temperature fluctuations.

[0003] Hydraulic circuit breakers are mostly used individually. However, when multiple hydraulic circuit breakers need to be used simultaneously, how to achieve synchronization of multiple hydraulic circuit breakers and how to ensure high reliability of multiple hydraulic circuit breakers when combined are also urgent problems to be solved. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a hydraulic electromagnetic circuit breaker.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A hydraulic electromagnetic circuit breaker, comprising: A number of circuit breaker bodies arranged side by side, each circuit breaker body includes a housing, two oppositely arranged current-carrying elements are provided on the lower side of the housing, and the current-carrying elements are partially disposed through the bottom of the housing, a rotatable handle is provided on the upper side of the housing, and a tripping mechanism, an operating mechanism and an arc-extinguishing mechanism are sequentially provided in the middle of the housing, and the operating mechanism is linked to the handle, and the tripping mechanism is electrically connected to the first current-carrying element; A linkage pin is provided between two adjacent circuit breaker bodies, and the two ends of the linkage pin are respectively connected to two adjacent handles; Several splicing elements are located between the housings of two adjacent circuit breaker bodies.

[0006] The circuit breaker body is provided with clearance platforms at its four corners.

[0007] The circuit breaker body has several positioning holes on its surface, and the splicing element is inserted into the positioning holes.

[0008] The splicing element is a ring shaft, and the outer periphery of the ring shaft is provided with protruding ribs.

[0009] The diameters at both ends of the linkage pin are smaller than the diameter of the middle section.

[0010] The arc-extinguishing device is an integrated arc-extinguishing cover.

[0011] The circuit breaker body has a positioning pin at its bottom, which is located between two current-carrying components.

[0012] The current-carrying component can be welded and fixed to the circuit board.

[0013] The operating mechanism includes: The bracket has a first mounting bracket forming a fixed release mechanism on one side and a second mounting bracket forming on the other side. The second mounting bracket has multiple hinge positions, wherein a handle is rotatably disposed at the first hinge position of the second mounting bracket. An armature is rotatably mounted at the second hinge position of the second mounting bracket, with one end located on the movement path of the release mechanism and the other end connected to the operating component. The movable contact is rotatably located at the third hinge position of the second mounting bracket and is linked to the handle via an operating component.

[0014] The operating components include: A connecting plate, one end of which is hinged to the moving contact; The rotating plate has one end connected to the other end of the connecting plate, and the other end is hinged to the handle. The latch is fixedly installed on one side of the connecting plate and overlaps with the armature.

[0015] The advantages of this utility model are: its overall structure is simple, and multiple circuit breaker bodies can be spliced ​​together by using splicing elements and connecting pins, while also achieving synchronous operation of the handle. Attached Figure Description Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is an exploded view of the present invention.

[0017] Figure 3 This is a schematic diagram of the internal structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the bracket of this utility model.

[0019] Figure 5 This is a structural schematic diagram of the bracket of this utility model from another angle. Detailed Implementation

[0020] 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.

[0021] 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 certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0022] like Figure 1 As shown, this utility model discloses a hydraulic electromagnetic circuit breaker, which includes multiple circuit breaker bodies arranged side by side, and two oppositely arranged current-carrying elements at the bottom of each body. One of them is a first current-carrying element 620 connected to the tripping mechanism, and the other is a second current-carrying element 610. The portion of the second current-carrying element located inside the housing is bent at 90° and placed horizontally below the arc-extinguishing mechanism. It can also support the stationary contacts, thus cooperating with the moving contacts of the operating mechanism. Furthermore, the thickness and width of the current-carrying element can be increased, with dimensions of 1.8*11.9mm, and its material is T3Y2 copper alloy, thereby improving its temperature rise performance.

[0023] Meanwhile, the current-carrying components located on the outside can be inserted into the circuit board 200, and their electrical connection with the circuit board is achieved by soldering, which can ensure the reliability of their connection with the circuit board 200.

[0024] Furthermore, multiple circuit breaker bodies 100 can be used side-by-side, such as... Figure 2 As shown, by setting splicing elements 400 between each circuit breaker body, each circuit breaker body is integrated into a whole. At the same time, in order to ensure the synchronization of the handles of the circuit breaker body, the synchronous action of each handle is achieved through linkage pins 300 between each handle.

[0025] The linkage pin 300 is a columnar structure, with its two ends connected to two adjacent handles 500 respectively. The diameter of the two ends of the linkage pin 300 is smaller than the diameter of the middle section, and the length of the middle section is adapted to the distance between the two handles. After the two ends of the linkage pin are inserted into the holes of the handles, the two ends of the middle section fit perfectly with the handles, thus making the two handles form a whole.

[0026] The circuit breaker body has several positioning holes 130 on its surface, and the splicing element 400 is partially inserted into the positioning holes 130. The positioning holes are located at both ends of the diagonal of the circuit breaker body, so that the circuit breaker body can be tightly spliced ​​by only two splicing elements. The splicing element achieves a reliable connection between the two circuit breaker bodies through an interference fit.

[0027] In this embodiment, the splicing element 400 is an annular shaft, and the annular shaft has a raised rib 410 on its outer periphery. The number of raised ribs 410 can be multiple, evenly distributed along the outer periphery of the annular shaft, or there can be a single rib, so that the splicing element can be directly interference-fitted with the positioning hole. The circuit breaker body has four corner relief surfaces 120, which are recessed inward. This ensures that when a single circuit breaker body is riveted and fixed, the riveting part is lower than the side surface of the circuit breaker body, so that when the two are fitted together, gaps will not appear due to riveting interference.

[0028] At the same time, its splicing and connection method is simple and will not affect the overall size.

[0029] like Figure 3 As shown, the circuit breaker body 100 includes a housing 110. Two current-carrying elements are provided on the lower side of the housing 110, and the current-carrying elements are partially disposed through the bottom of the housing 110. A rotatable handle 500 is provided on the upper side of the housing 110. A tripping mechanism 800, an operating mechanism 900, and an arc-extinguishing mechanism 700 are sequentially provided in the middle of the housing 110. The operating mechanism 900 is linked to the handle 500. The tripping mechanism 800 is electrically connected to the first current-carrying element 620.

[0030] The arc extinguishing device 700 is an integrated arc extinguishing cover, which includes two partitions and a number of arc extinguishing grids disposed between the partitions. Up to nine arc extinguishing grids can be installed, thereby improving the segmentation capability. At the same time, the integrated arc extinguishing cover improves production efficiency.

[0031] The circuit breaker body 100 is provided with a positioning pin 140 at its bottom, which is located between two current-carrying components. The positioning pin is designed so that when the entire circuit breaker body is mounted on the circuit board, the two current-carrying components pass through the pre-reserved slots on the circuit board. Simultaneously, the positioning pin can also cooperate with the positioning holes on the circuit board, serving as a stress point for the circuit breaker body. This makes the current-carrying components more stable during welding, ensuring reliable welding of the current-carrying components.

[0032] The current-carrying component can be welded and fixed to the circuit board 200.

[0033] like Figure 4 and Figure 5 As shown, the operating mechanism 900 includes: The bracket 910 has a first mounting bracket 911 with a fixed release mechanism on one side and a second mounting bracket 912 on the other side. The second mounting bracket 912 has multiple hinge positions, wherein the handle 500 is rotatably disposed at the first hinge position 9121 of the second mounting bracket 912. The armature 920 is rotatably disposed at the second hinge position 9122 of the second mounting bracket 912, with one end located on the movement path of the release mechanism 800 and the other end connected to the operating component. The movable contact 930 is rotatably disposed at the third hinge position 9123 of the second mounting bracket 912, and is linked to the handle 500 through the operating component.

[0034] The bracket is a sheet metal part. Its upper and lower sides are bent in the same direction to form a first mounting bracket. The release mechanism is restricted by the first mounting bracket. Its left and right sides are bent in the opposite direction to form a second mounting bracket. The two mounting brackets are directly formed as one piece from a single sheet metal part, and different components are installed on them respectively.

[0035] The tripping mechanism uses a conventional hydraulic circuit breaker tripping device, so it will not be described in detail in this application.

[0036] The moving contact is bent on both sides to form a sidewall, which is hinged to the third hinge position of the second mounting bracket. It can rotate relative to the hinge point and contact or separate from the stationary contact.

[0037] The second hinge point is hinged with an armature, which is divided into front and rear ends with the hinge point as the center. The front end extends to the moving path of the release mechanism, and the projection of its rear end is U-shaped, that is, divided into two side arms, including a first side arm 921 and a second side arm 922. The second side arm 922 extends along the length of the bracket and is used to cooperate with the latch. The first side arm extends towards the moving contact and overlaps with the bracket to limit the maximum swing angle of the armature.

[0038] The handle is rotatably positioned at the first hinge position, and it drives the moving contact to move accordingly via the operating components.

[0039] The operating components include: Connecting plate 940, one end of which is hinged to moving contact 930; The rotating plate 650 has one end connected to the other end of the connecting plate, and the other end hinged to the handle. The latch 960 is fixedly installed on one side of the connecting plate and overlaps with the armature.

[0040] When the armature moves, it strikes the latch, which in turn causes the contact to move via the connecting plate. 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 hydraulic electromagnetic circuit breaker characterized by: It includes: A number of circuit breaker bodies (100) are arranged side by side. Each circuit breaker body (100) includes a housing (110). Two current-carrying elements are provided on the lower side of the housing (110), and the current-carrying elements are partially disposed through the bottom of the housing (110). A rotatable handle (500) is provided on the upper side of the housing (110). A tripping mechanism (800), an operating mechanism (900), and an arc-extinguishing mechanism (700) are arranged sequentially in the middle of the housing (110). The operating mechanism (900) is linked to the handle (500). The tripping mechanism (800) is electrically connected to the first current-carrying element (620). A linkage pin (300) is provided between two adjacent circuit breaker bodies (100), and the two ends of the linkage pin (300) are respectively connected to two adjacent handles (500); Several splicing elements (400) are disposed between the housings of two adjacent circuit breaker bodies (100).

2. A hydraulic electromagnetic circuit breaker according to claim 1, characterized in that: The circuit breaker body (100) is provided with clearance platforms (120) at its four corners.

3. A hydraulic electromagnetic circuit breaker according to claim 1, characterized in that: The circuit breaker body has several positioning holes (130) on its surface, and the splicing element (400) is partially inserted into the positioning holes (130).

4. A hydraulic electromagnetic circuit breaker according to claim 1 or 3, characterized in that: The splicing element (400) is an annular shaft, and the annular shaft is provided with a rib (410) on its outer periphery.

5. A hydraulic electromagnetic circuit breaker according to claim 1, characterized in that: The diameters at both ends of the linkage pin (300) are smaller than the diameter of the middle section.

6. A hydraulic electromagnetic circuit breaker according to claim 1, characterized in that: The arc extinguishing mechanism (700) is an integrated arc extinguishing cover.

7. A hydraulic electromagnetic circuit breaker according to claim 1, characterized in that: The circuit breaker body (100) has a positioning pin (140) at its bottom, which is located between two current-carrying components.

8. A hydraulic electromagnetic circuit breaker according to claim 1 or 7, characterized in that: The current-carrying component can be welded and fixed to the circuit board (200).

9. A hydraulic electromagnetic circuit breaker according to claim 1, characterized in that: The operating mechanism (900) includes: The bracket (910) has a first mounting bracket (911) forming a fixed release mechanism on one side and a second mounting bracket (912) forming on the other side. The second mounting bracket (912) has multiple hinge positions, wherein a handle (500) is rotatably disposed at the first hinge position (9121) of the second mounting bracket (912). The armature (920) is rotatably disposed at the second hinge position (9122) of the second mounting bracket (912), with one end located on the movement path of the release mechanism (800) and the other end connected to the operating component; The movable contact (930) is rotatably disposed at the third hinge position (9123) of the second mounting bracket (912) and is linked to the handle (500) through the operating component.

10. A hydraulic electromagnetic circuit breaker according to claim 9, characterized in that: The operating components include: Connecting plate (940), one end of which is hinged to moving contact (930); A rotating plate (650) has one end connected to the other end of a connecting plate and the other end hinged to a handle. The latch (960) is fixedly disposed on one side of the connecting plate and overlaps with the armature.

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