Instantaneous electromagnetic trip system

Abstract

An instantaneous electromagnetic tripping system comprises a contact plate provided with a static contact, an armature and a magnet yoke, the armature and the magnet yoke are respectively mounted on the contact plate, the contact plate comprises a top plate, a bottom plate and a side plate, the top plate and the bottom plate are oppositely arranged, the side plate is connected between the top plate and the bottom plate, and a space for mounting the magnet yoke is enclosed among the top plate, the bottom plate and the side plate. An armature and a spring connected between the armature and the top plate are arranged on the side face, away from the magnet yoke, of the top plate, the armature is provided with a rotating shaft part, a swing part and a beating part used for triggering tripping, the contact plate is provided with a positioning structure, and the spring is used for driving the armature to enable the rotating shaft part of the armature to abut against the positioning structure. The magnet yoke is used for attracting the armature to overcome the action of the spring to rotate in the direction close to the top plate, installation of the magnet yoke and the armature is achieved through the contact plate, the structure is simple, cost is low, and installation efficiency is high.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to an instantaneous electromagnetic tripping system. Background Art

[0002] As a unit in the power line, the circuit breaker not only has the basic on-off function of the line, but also has the function of protecting the line. When a short circuit occurs in the line, the circuit breaker must act quickly to disconnect the line to ensure the safety of equipment and personnel. However, the electromagnetic tripping system of the existing circuit breaker has a complex structure, many parts, high cost and low installation efficiency. In addition, the structure of the electromagnetic tripping system requires the installation of multiple parts and limit armatures. After the multiple parts are assembled, there are not only errors, but also poor stability during operation. The position of the parts will be offset, resulting in changes in the stroke of the armature, resulting in poor stability of the electromagnetic tripping system characteristics, resulting in poor stability of the electromagnetic tripping system characteristics, and it is difficult for the armature to accurately and quickly disconnect the line, and the predetermined protection function cannot be achieved. Summary of the invention

[0003] The utility model aims to overcome at least one defect of the prior art and provide an instantaneous electromagnetic tripping system.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An instantaneous electromagnetic tripping system includes a contact plate provided with a static contact and an armature and a yoke respectively mounted on the contact plate, the contact plate including a top plate and a bottom plate arranged opposite to each other, and a side plate connected between the top plate and the bottom plate, a space for mounting the yoke is enclosed between the top plate, the bottom plate and the side plates, an armature is provided on the side of the top plate away from the yoke, and a spring connected between the armature and the top plate, the armature is provided with a rotating shaft portion, a swinging portion and a snapping portion for triggering the tripping, the contact plate is provided with a positioning structure, the spring is used to drive the armature so that the rotating shaft portion of the armature abuts against the positioning structure and the swinging portion rotates around the rotating shaft portion in a direction away from the top plate, and the yoke is used to attract the armature to overcome the action of the spring and rotate in a direction close to the top plate.

[0006] Preferably, the top plate includes a third top plate arranged opposite to the bottom plate, the side plate is connected between the third top plate and the bottom plate to form a mounting structure, the cross-section of the mounting structure is U-shaped, C-shaped or semicircular, and the yoke is installed on the inner side of the mounting structure.

[0007] Preferably, the two opposite ends of the armature are a rotating shaft portion and a swinging portion, respectively, the spring is used to pull the swinging portion of the armature, and the contact plate is provided with a blocking structure on the side of the swinging portion away from the top plate, the blocking structure is used to prevent the swinging portion from rotating in a direction away from the top plate, and the rotating shaft portion of the armature is arranged opposite to the positioning structure.

[0008] Preferably, the armature includes two clamping plates arranged opposite to each other, and a flat plate connected between the two clamping plates, the snapping portion is connected to the flat plate, the two clamping plates are arranged opposite to each other on both sides of the width direction of the top plate, and the two ends of the clamping plates serve as the rotating shaft portion and the swinging portion respectively.

[0009] Preferably, raised positioning bosses are respectively provided on both sides of the top plate in the width direction, and the two positioning bosses on both sides of the top plate serve as the positioning structures respectively, and the two clamping plates are respectively pressed against the positioning bosses under the action of springs.

[0010] Preferably, a positioning notch is provided on the clamping plate, and the positioning notch is clamped on the positioning boss.

[0011] Preferably, the positioning boss includes a first boss surface and a second boss surface connected, a boss line is provided at the connection between the first boss surface and the second boss surface, and the positioning notch includes a first notch surface and a second notch surface connected, a notch line is provided at the connection between the first notch surface and the second notch surface, the angle between the first notch surface and the second notch surface is greater than the angle between the first boss surface and the second boss surface, the notch line abuts against the boss line, so that the armature rotates with the notch line and the boss line as the rotation center line, the first notch surface is used to contact the first boss surface when the armature contacts the blocking structure, and the second notch surface is used to contact or avoid the second boss surface when the armature triggers the operating mechanism to trip.

[0012] Preferably, the contact plate is provided with a barb as a blocking structure, the barb is provided with a blocking surface arranged opposite to the bottom plate, the barb is arranged corresponding to one of the clamps, the barb and the corresponding clamp are located on the same side of the snap-fitting part, and the corresponding clamp is provided with a blocking block, which is used to be inserted into the barb and cooperate with the blocking surface in a limiting manner.

[0013] Preferably, the contact plate is provided with two barbs as a blocking structure, the two barbs are respectively provided with blocking surfaces arranged opposite to the bottom plate, the two barbs are respectively arranged corresponding to two clamps, the snap-fitting part is arranged between the two barbs, and the two clamps are both provided with blocking blocks, and the blocking blocks are used to be inserted into the corresponding barbs and cooperate with the blocking surfaces in a limiting manner.

[0014] Preferably, the barb and the top plate are respectively formed by bending a processing plate, and the processing plate is provided with at least one processing groove, and the processing groove is used to cut the contact plate into a first processing plate and at least one second processing plate arranged at intervals, and the first processing plate is bent to form the top plate, and the second processing plate is bent to form the barb.

[0015] Preferably, the barb is L-shaped, and comprises a support rod connected to the side plate, and a bending portion connected to the support rod, wherein the bending portion is provided with a blocking surface arranged opposite to the bottom plate.

[0016] Preferably, the armature and the top plate are respectively provided with a first padlock hole and a second padlock hole, the hooks at both ends of the spring are respectively passed through the first padlock hole and the second padlock hole for limiting cooperation, and the armature is provided with an avoidance groove, and the avoidance groove is used to avoid the spiral portion of the spring.

[0017] Preferably, the top plate includes a first top plate, a second top plate and a third top plate which are arranged in sequence, the second top plate is connected between the first top plate and the third top plate, the second top plate is arranged at an oblique angle to the first top plate and the third top plate respectively, and the armature is rotatably mounted on the third top plate.

[0018] Preferably, the two ends of the spring are respectively provided with a first hook and a second hook, the first hook and the second hook are relatively arranged on both sides of the axis of the spiral portion of the spring, the armature is provided with a first padlock hole, the first padlock hole is arranged on the flat plate of the armature, the first hook passes through the first padlock hole from above the armature and hooks the hole wall of the first padlock hole, the second top plate is provided with a second padlock hole, and a third padlock hole is provided at the connection between the first top plate and the second top plate, a limit block is formed between the second padlock hole and the third padlock hole, the second hook passes through the second padlock hole and the third padlock hole in sequence and then hooks the limit block, or the second hook passes through the third padlock hole and the second padlock hole in sequence and then hooks the limit block.

[0019] The instantaneous electromagnetic tripping system of the utility model has an armature that is directly rotatably mounted on a positioning structure of a contact plate, a yoke that is mounted in a space surrounded by the contact plate, and the contact plate is used to mount the yoke and the armature, which has a simple structure, low cost and high installation efficiency.

[0020] In particular, in the instantaneous electromagnetic tripping system of the present application, the armature is directly rotatably installed on the positioning structure of the contact plate, and the maximum rotation angle of the armature is limited by the blocking structure on the contact plate. There is no need to install other parts to install and limit the armature. This can not only avoid errors caused by assembly of parts and position offset caused by multiple collisions of the armature during work, thereby ensuring the stability of the gap between the armature and the yoke, but also avoid limiting the armature by plastic parts. The contact plate and spring of metal materials are not easily deformed, and the instantaneous action characteristics are more stable, thereby avoiding the problem of unstable instantaneous characteristics caused by plastic deformation of plastic parts.

[0021] In addition, the third top plate, side plate and bottom plate constituting the mounting structure respectively serve as three sides for generating a magnetic field, which is equivalent to a semicircular coil generating a magnetic field, with a high magnetic field utilization rate, and the magnetic field acts on the yoke. Compared with a flat-plate mounting structure that only has one side generating a magnetic field, a U-shaped, C-shaped or semicircular mounting structure will generate a more concentrated and stronger magnetic field.

[0022] In addition, the U-shaped armature can be limited by the clamping plates and the top plate on both sides. The clamping plates can not only prevent the armature from moving to both sides, but also can rotate the armature and install it on the top plate.

[0023] In addition, the armature and the top plate are limited by positioning notches and positioning bosses, so the armature can be directly rotatably installed on the top plate without the aid of other parts, and the armature can be effectively prevented from falling off, with high stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the instantaneous electromagnetic tripping system of the utility model;

[0025] Figure 2 It is a side view of the instantaneous electromagnetic tripping system of the utility model;

[0026] Figure 3 This utility model Figure 2 A partial enlarged view of

[0027] Figure 4 It is a structural schematic diagram of the contact plate of the utility model;

[0028] In the figure, 1, armature; 2, yoke; 3, connecting mechanism; 4, static contact; 51, top plate; 52, bottom plate; 53, side plate; 6, spring; 11, shaft portion; 12, swing portion; 13, snapping portion; 7, positioning structure; 8, blocking structure; 511, first top plate; 512, second top plate; 513, third top plate; 14, clamping plate; 15, flat plate; 110, positioning notch; 71, first boss surface; 72, third Two boss surfaces; 73, boss line; 111, first notch surface; 112, second notch surface; 113, notch line; 81, blocking surface; 120, blocking block; 82, processing groove; 83, support rod; 84, bending portion; 601, first padlock hole; 602, second padlock hole; 600, avoidance groove; 60, spiral portion; 61, first hook; 62, second hook; 603, third padlock hole; 604, limit block. DETAILED DESCRIPTION

[0029] The specific implementation of the instantaneous electromagnetic tripping system of the utility model is further described below with reference to the embodiments given in the accompanying drawings.

[0030] Circuit breakers usually include operating mechanisms, contact systems, arc extinguishing systems, and usually also include a time-delay tripping system for overload protection and an instantaneous electromagnetic tripping system for short-circuit protection. The contact system includes a moving contact and a stationary contact. The operating mechanism is connected to the moving contact. When the operating mechanism is engaged, the button drives the moving contact to contact or separate from the stationary contact through the operating mechanism. The arc extinguishing system is used to extinguish the arc generated when the moving contact and the stationary contact are disconnected. The time-delay tripping system is used to trigger the operating mechanism to trip in the event of an overload. The instantaneous electromagnetic tripping system triggers the operating mechanism to trip in the event of a short circuit. After the operating mechanism is tripped, it drives the moving contact to separate from the stationary contact to achieve line protection.

[0031] like Figure 1 As shown, the instantaneous electromagnetic tripping system of this embodiment includes a contact plate provided with a static contact 4 and an armature 1 and a yoke 2 respectively mounted on the contact plate, wherein the contact plate is used to connect an external wire. In this embodiment, the contact plate is connected to an external conductive row (not shown in the figure) through a connecting mechanism 3, and a static contact 4 (not shown in the figure) for contacting a moving contact is provided on the contact plate. When the static contact 4 contacts the moving contact, the current passes through the contact plate and magnetizes the yoke 2 and the armature 1. When the current meets the instantaneous action threshold, the armature 1 rotates due to the electromagnetic attraction of the yoke 2, and triggers the operating mechanism to trip, so that the operating mechanism drives the moving contact to separate from the static contact 4, thereby disconnecting the short-circuit current, ensuring the safety of electricity use, and realizing the protection function.

[0032] like Figure 1 As shown, the contact plate of this embodiment includes a top plate 51 and a bottom plate 52 arranged opposite to each other, and a side plate 53 connected between the top plate 51 and the bottom plate 52. A space for installing a yoke 2 is enclosed between the top plate 51, the bottom plate 52 and the side plate 53. An armature 1 is provided on the side of the top plate 51 away from the yoke 2, and a spring 6 is connected between the armature 1 and the top plate 51. The armature 1 is provided with a snap-fit ​​portion 13 for triggering the tripping of the circuit breaker. The armature 1 is provided with a rotating shaft portion 11, a swinging portion 12 and the snap-fit ​​portion 13 for triggering the tripping. The contact plate is provided with a positioning structure 7 and a blocking structure 8. The spring 6 is used to drive the armature 1 so that the rotating shaft portion 11 of the armature 1 abuts against the positioning structure 7, and the swinging portion 12 rotates around the rotating shaft portion 11 in a direction away from the top plate 51 until it is limited by the blocking structure 8. The yoke 2 is used to attract the armature 1 to overcome the action of the spring 6 and rotate in a direction close to the top plate 51, and trigger the operating mechanism to trip through the snap-fit ​​portion 13 on the swinging portion 12.

[0033] In the instantaneous electromagnetic tripping system of the present embodiment, the armature 1 is directly rotatably mounted on the positioning structure 7 of the contact plate, and the maximum rotation angle of the armature 1 is limited by the blocking structure 8 on the contact plate. There is no need to install other parts to install and limit the armature 1, which can not only avoid errors caused by assembly of parts and position deviation caused by collision of the armature 1 during multiple operations, thereby ensuring the stability of the gap between the armature 1 and the yoke 2, but also avoid limiting the armature 1 by plastic parts. The contact plate and spring 6 made of metal are not easily deformed, and the instantaneous action characteristics are more stable, thereby avoiding the problem of unstable instantaneous characteristics caused by plastic deformation of plastic parts.

[0034] This is a preferred embodiment of the utility model. As other modified embodiments, the blocking structure 8 can also be set on the housing of the switch electrical appliance adopting the instantaneous electromagnetic tripping system, or the blocking structure 8 can be set on other mechanisms in the switch electrical appliance. For example, it can be set on the housing of the circuit breaker. After the instantaneous electromagnetic tripping system is installed in the housing of the circuit breaker, the armature 1 can cooperate with the blocking structure 8 in the housing.

[0035] like Figure 2-4 As shown, the two opposite ends of the armature 1 of this embodiment are respectively a rotating shaft portion 11 and a swinging portion 12, the contact plate is provided with a positioning structure 7 and a blocking structure 8, the blocking structure 8 is located on the side of the swinging portion 12 away from the top plate 51, the rotating shaft portion 11 of the armature 1 is arranged opposite to the positioning structure 7, the spring 6 is used to pull the swinging portion 12 of the armature 1, so that the rotating shaft portion 11 of the armature 1 is against the positioning structure 7, and the swinging portion 12 is rotated around the rotating shaft portion 11 in a direction away from the top plate 51 until it is limited by the blocking structure 8, the yoke 2 is used to attract the armature 1 to overcome the action of the spring 6 and rotate in a direction close to the top plate 51, and trigger the operating mechanism to release through the snapping portion 13 on the swinging portion 12.

[0036] In this embodiment, the top plate 51 includes a first top plate 511, a second top plate 512 and a third top plate 513 which are arranged in sequence, the second top plate 512 is connected between the first top plate 511 and the third top plate 513, the second top plate 512 is arranged at an oblique angle to the first top plate 511 and the third top plate 513 respectively, the first top plate 511 is connected to the connecting mechanism 3, the third top plate 513 is arranged opposite to the bottom plate 52, the side plate 53 is connected between the third top plate 513 and the bottom plate 52 to form an installation structure, the installation The cross section of the structure is U-shaped, C-shaped or semicircular, and the yoke 2 is installed on the inner side of the installation structure. When the current passes through the installation structure, a stronger magnetic field can be generated. The third top plate 513, the side plate 53 and the bottom plate 52 constituting the installation structure are respectively used as three sides for generating the magnetic field, which is equivalent to a semicircular coil generating a magnetic field. The magnetic field utilization rate is high, and the magnetic field acts on the yoke 2. Compared with the flat-plate installation structure, only one side generates a magnetic field. Therefore, the U-shaped, C-shaped or semicircular installation structure will generate a more concentrated and stronger magnetic field;

[0037] The longitudinal cross section of the armature 1 is in a U-shaped shape. The armature 1 includes two clamping plates 14 arranged opposite to each other, and a flat plate 15 connected between the two clamping plates 14. The two ends of the clamping plates 14 serve as the rotating part 11 and the swinging part 12 respectively. The snapping part 13 is arranged at one end of the flat plate 15 close to the side plate 53. The U-shaped armature 1 is buckled on the third top plate 513, so that the two clamping plates 14 are arranged opposite to each other on both sides of the width direction of the third top plate 513. The two sides of the width direction of the third top plate 513 are respectively provided with raised positioning bosses. The two positioning bosses on both sides of the third top plate 513 serve as the positioning structures 7 respectively. The two clamping plates 14 are respectively pressed against the positioning bosses under the action of the spring 6 and can rotate around the positioning bosses. The U-shaped armature 1 can be limited by the clamping plates 14 on both sides and the top plate 51. The clamping plates 14 can not only prevent the armature 1 from moving to both sides, but also play the role of rotating the armature 1 on the top plate 51. The armature 1 of this embodiment is a bilaterally symmetrical structure, which is a preferred solution. Of course, the armature 1 may also adopt an asymmetric structure, for example, the clamping plate 14 is only provided on one side, or the clamping plates 14 on both sides are provided asymmetrically, or the clamping plates 14 on both sides are not provided, and the flat plate 15 of the armature 1 may also be directly abutted against the second top plate 512 for rotatable installation, or a boss protruding upward in the thickness direction may be provided on the top side of the top plate 51, so that the flat plate 15 of the armature 1 is abutted against the boss for rotatable installation, which all fall within the protection scope of the present utility model.

[0038] Furthermore, the clamping plate 14 is provided with a positioning notch 110, and the positioning notch 110 is clamped on the positioning boss. The positioning notch 110 cooperates with the positioning boss to limit the armature 1. Specifically, the positioning boss includes a first boss surface 71 and a second boss surface 72 connected to each other, and a boss line 73 is provided at the connection between the first boss surface 71 and the second boss surface 72. The positioning notch 110 includes a first notch surface 111 and a second notch surface 112 connected to each other, and a notch line 113 is provided at the connection between the first notch surface 111 and the second notch surface 112. The angle between the first notch surface 111 and the second notch surface 112 is greater than the angle between the first boss surface 71 and the second boss surface 72, and the notch line 113 abuts against the boss line 73. Figure 2 The middle notch line 113 and the boss line 73 coincide with one point, so that the armature 1 rotates with the notch line 113 and the boss line 73 as the rotation center line. The first notch surface 111 is used to contact the first boss surface 71 when the armature 1 contacts the blocking structure 8, and the second notch surface 112 is used to contact or avoid the second boss surface 72 when the armature 1 triggers the operating mechanism to trip.

[0039] In this embodiment, the armature 1 and the top plate 51 are limited by the positioning notch 110 and the positioning boss, so the armature 1 can be directly rotatably installed on the top plate 51 without the help of other parts, and the armature 1 can be effectively prevented from falling off, with high stability.

[0040] When the circuit does not exceed the current threshold, the first notch surface 111 contacts the first boss surface 71 under the drive of the spring 6, which can not only increase the contact area between the armature 1 and the top plate 51, but also the first notch surface 111 can keep the armature 1 stable at a preset angle; when the circuit exceeds the current threshold, the armature 1 is attracted by the yoke 2, rotates counterclockwise, and turns to the yoke 2. The second notch surface 112 is used to collide with the second boss surface 72 to play a positioning role. After the armature 1 is attracted, when the second notch surface 112 contacts the second boss surface 72, it is limited and can no longer rotate, and the rotation angle of the armature 1 is controlled within a certain range. The yoke 2 also has this part of the positioning function, and can also help disperse the reaction force of the armature 1 at the moment of impact. Of course, the clamping plate 14 can also be provided with no positioning notch 110. The clamping plate 14, as one end of the shaft portion 11, can directly abut against the positioning boss, and the armature 1 can also be rotatably installed.

[0041] It is understandable that the armature 1 can also be rotatably mounted on the contact plate in other ways, for example, by bending the contact plate into two C-shaped positioning structures 7, the armature 1 is set at a position between the two C-shaped positioning structures 7, and bosses are respectively set on both sides of the armature 1, and the bosses on both sides are respectively inserted into the two C-shaped positioning structures 7 to achieve rotatable mounting, or a rotating shaft is separately installed on the armature 1, and then the rotating shaft is respectively inserted into the two C-shaped positioning structures 7 to achieve rotatable mounting. The positioning structure 7 can also be O-shaped, U-shaped or other shapes, or all belong to the protection scope of the present utility model.

[0042] like Figure 2-4 As shown, as an embodiment of the blocking structure 8, the contact plate is provided with a barb as the blocking structure 8, the barb is provided with a blocking surface 81 arranged opposite to the bottom plate 52, the barb is arranged corresponding to one of the clamps 14, the barb and the corresponding clamp 14 are located on the same side of the snap-fit ​​portion 13, and the corresponding clamp 14 is provided with a blocking block 120, the blocking block 120 is used to be inserted into the barb and cooperate with the blocking surface 81. In this embodiment, there is one barb, and the blocking block 120 is provided on both clamps 14, but only the blocking block 120 on the clamp 14 located on the same side of the snap-fit ​​portion 13 as the barb cooperates with the barb to play a limiting role, wherein the blocking block 120 may not be provided on the clamp 14 on the other side. It can be understood that the clamp 14 may not be provided with the blocking block 120, and the clamp 14 as one end of the swing portion 12 can be directly inserted into the barb to cooperate with the blocking surface, which all belong to the protection scope of the utility model.

[0043] As another embodiment, the contact plate is provided with two barbs as the blocking structure 8, the two barbs are respectively provided with blocking surfaces 81 arranged opposite to the bottom plate 52, the two barbs are respectively provided corresponding to the two clamping plates 14, the snapping portion 13 is arranged between the two barbs, and the two clamping plates 14 are both provided with blocking blocks 120, and the blocking blocks 120 are used to be inserted into the corresponding barbs and limit the blocking surfaces 81. By limiting the position with two barbs, the two sides of the armature 1 can be kept balanced, but only one barb can also be provided, which all belong to the protection scope of the present utility model.

[0044] Furthermore, the barb and the top plate 51 are formed by bending a processing plate, and the processing plate is provided with at least one processing groove 82, which is used to cut the contact plate into a first processing plate and at least one second processing plate which are arranged at intervals (not shown in the figure). The first processing plate is formed into the top plate 51 after being bent, and the second processing plate is formed into the barb after being bent. It can be understood that when one barb is provided, one processing groove 82 is provided, and the second processing plate is cut out on one side of the first processing plate; when two barbs are provided, two processing grooves 82 are provided, and the second processing plates are cut out on both sides of the first processing plate, and the two second processing plates on both sides are respectively used to bend to form two barbs.

[0045] The barb as the blocking structure 8 can be bent integrally with the contact plate, which can reduce the difficulty and cost of processing, and does not need to be welded on the contact plate or installed separately by other means. Of course, the barb can also be welded on the contact plate or installed separately by other means, which all fall within the protection scope of the present utility model.

[0046] Furthermore, the barb is L-shaped, and includes a support rod 83 connected to the side plate 53, and a bent portion 84 connected to the support rod 83, and the blocking surface 81 is arranged on the bent portion 84 and is arranged opposite to the bottom plate 52. Of course, the barb can also adopt other shapes, such as adding a bend to the barb to make the distance between the bent portion 84 and the clamping plate 14 closer, which is convenient for optimizing the structure, and all belong to the protection scope of the present utility model.

[0047] like Figure 1 As shown, the armature 1 and the top plate 51 are respectively provided with a first padlock hole 601 and a second padlock hole 602, the first padlock hole 601 is arranged on the flat plate 15 of the armature 1, and the hooks at both ends of the spring 6 respectively pass through the first padlock hole 601 and the second padlock hole 602 for limiting cooperation, and the armature 1 is provided with an avoidance groove 600, and the avoidance groove 600 is used to avoid the spiral portion 60 of the spring 6, so as to avoid setting the spring 6 above the armature 1, reduce the longitudinal dimension, and have the characteristic of small volume.

[0048] Furthermore, the hooks at both ends of the spring 6 are respectively a first hook 61 and a second hook 62, and the first hook 61 and the second hook 62 are relatively arranged on both sides of the axis of the spiral portion 60 of the spring 6, the first hook 61 passes through the first padlock hole 601 from above the armature 1 and hooks the hole wall of the first padlock hole 601, the second padlock hole 602 is arranged on the second top plate 512, and a third padlock hole 603 is provided at the connection between the first top plate 511 and the second top plate 512, and a limit block 604 is formed between the second padlock hole 602 and the third padlock hole 603, and the second hook 62 passes through the second padlock hole 602 and the third padlock hole 603 in sequence and then hooks the limit block 604.

[0049] The first hook 61 passes through the top of the armature 1 to avoid interfering with the movement of the armature 1. At the same time, the second hook 62 first passes through the second padlock hole 602 below and then passes through the third padlock hole 603. It can not only reliably limit the spring 6 to prevent the spring 6 from falling off, but also has the characteristic of easy assembly.

[0050] Of course, the second hook 62 may also first pass through the third padlock hole 603 at the top and then pass through the second padlock hole 602 at the bottom, which will make the second hook 62 and the first hook 61 located on the same side of the axis of the spiral portion 60, resulting in the force distribution on the spring 6 not being the most optimized solution. In addition, the spring 6 may also be a compression spring, which is located below the first padlock hole 601 to push the armature 1 away from the top plate 51, and both belong to the protection scope of the present utility model. In addition, both installation methods of the second hook 62 of the aforementioned spring 6 are possible, which may first pass through the second padlock hole 602 and then through the third padlock hole 603, or may first pass through the third padlock hole 603 and then through the second padlock hole 602. The structural design and installation methods of the hook of the spring 6 in different directions can meet the requirements of different instantaneous characteristics, that is, the second hook 62 passes through the second padlock hole 602 and the third padlock hole 603 in sequence and then hooks the limit block 604, or the second hook 62 passes through the third padlock hole 603 and the second padlock hole 602 in sequence and then hooks the limit block 604.

[0051] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on directions or positional relationships shown in the drawings, or directions or positional relationships that are usually placed when in use, and are only for the convenience of description, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish descriptions, and cannot be understood as indicating relative importance.

[0052] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. An instantaneous electromagnetic tripping system, comprising a contact plate provided with a stationary contact (4), and an armature (1) and a yoke (2) respectively mounted on the contact plate, characterized in that: The contact plate comprises a top plate (51) and a bottom plate (52) arranged opposite to each other, and a side plate (53) connected between the top plate (51) and the bottom plate (52); a space for mounting a magnetic yoke (2) is enclosed between the top plate (51), the bottom plate (52) and the side plate (53); an armature (1) is provided on a side of the top plate (51) away from the magnetic yoke (2); and a spring (6) connected between the armature (1) and the top plate (51); the armature (1) is provided with a rotating shaft portion. (11), a swinging portion (12) and a snapping portion (13) for triggering a release, the contact plate is provided with a positioning structure (7), the spring (6) is used to drive the armature (1), so that the rotating shaft portion (11) of the armature (1) abuts against the positioning structure (7), and the swinging portion (12) rotates around the rotating shaft portion (11) in a direction away from the top plate (51), and the yoke (2) is used to attract the armature (1) to overcome the action of the spring (6) and rotate in a direction close to the top plate (51).

2. The instantaneous electromagnetic tripping system according to claim 1, characterized in that: The top plate (51) comprises a third top plate (513) arranged opposite to the bottom plate (52); the side plate (53) is connected between the third top plate (513) and the bottom plate (52) to form a mounting structure; the cross section of the mounting structure is U-shaped, C-shaped or semicircular; and the yoke (2) is mounted on the inner side of the mounting structure.

3. The instantaneous electromagnetic tripping system according to claim 1, characterized in that: The two opposite ends of the armature (1) are a rotating shaft portion (11) and a swinging portion (12), respectively; the spring (6) is used to pull the swinging portion (12) of the armature (1); the contact plate is provided with a blocking structure (8) on the side of the swinging portion (12) away from the top plate (51); the blocking structure (8) is used to block the swinging portion (12) from rotating in a direction away from the top plate (51); and the rotating shaft portion (11) of the armature (1) is arranged opposite to the positioning structure (7).

4. The instantaneous electromagnetic tripping system according to claim 3, characterized in that: The armature (1) comprises two clamping plates (14) arranged opposite to each other, and a flat plate (15) connected between the two clamping plates (14); the snapping portion (13) is connected to the flat plate (15); the two clamping plates (14) are arranged opposite to each other on both sides of the top plate (51) in the width direction; and the two ends of the clamping plates (14) serve as the rotating shaft portion (11) and the swinging portion (12) respectively.

5. The instantaneous electromagnetic tripping system according to claim 4, characterized in that: Raised positioning bosses are respectively provided on both sides of the top plate (51) in the width direction. The two positioning bosses on both sides of the top plate (51) serve as the positioning structures (7) respectively. The two clamping plates (14) respectively rest against the positioning bosses under the action of the springs (6).

6. The instantaneous electromagnetic tripping system according to claim 5, characterized in that: The clamping plate (14) is provided with a positioning notch (110), and the positioning notch (110) is clamped on the positioning boss.

7. The instantaneous electromagnetic tripping system according to claim 6, characterized in that: The positioning boss comprises a first boss surface (71) and a second boss surface (72) connected to each other, a boss line (73) is provided at the connection between the first boss surface (71) and the second boss surface (72), the positioning notch (110) comprises a first notch surface (111) and a second notch surface (112) connected to each other, a notch line (113) is provided at the connection between the first notch surface (111) and the second notch surface (112), and an angle between the first notch surface (111) and the second notch surface (112) is greater than the angle between the first notch surface (111) and the second notch surface (112). The angle between the first boss surface (71) and the second boss surface (72) is such that the notch line (113) abuts against the boss line (73), so that the armature (1) rotates with the notch line (113) and the boss line (73) as the rotation center line; the first notch surface (111) is used to contact the first boss surface (71) when the armature (1) contacts the blocking structure (8); and the second notch surface (112) is used to contact or avoid the second boss surface (72) when the armature (1) triggers the operating mechanism to trip.

8. The instantaneous electromagnetic tripping system according to claim 4, characterized in that: The contact plate is provided with a barb as a blocking structure (8), the barb being provided with a blocking surface (81) arranged opposite to the bottom plate (52), the barb being arranged corresponding to one of the clamping plates (14), the barb and the corresponding clamping plate (14) being located on the same side of the snap-fitting portion (13), the corresponding clamping plate (14) being provided with a blocking block (120), the blocking block (120) being used to be inserted into the barb and to be limitedly matched with the blocking surface (81).

9. The instantaneous electromagnetic tripping system according to claim 4, characterized in that: The contact plate is provided with two barbs as a blocking structure (8), and the two barbs are respectively provided with a blocking surface (81) arranged opposite to the bottom plate (52). The two barbs are respectively arranged corresponding to the two clamping plates (14), and the snap-fitting portion (13) is arranged between the two barbs. The two clamping plates (14) are both provided with a blocking block (120), and the blocking block (120) is used to be inserted into the corresponding barb and cooperate with the blocking surface (81) in a limiting manner.

10. The instantaneous electromagnetic tripping system according to claim 8 or 9, characterized in that: The barb and the top plate (51) are respectively formed by bending a processing plate, the processing plate is provided with at least one processing groove (82), and the processing groove (82) is used to cut the contact plate into a first processing plate and at least one second processing plate which are arranged at intervals, the first processing plate is bent to form the top plate (51), and the second processing plate is bent to form the barb.

11. The instantaneous electromagnetic tripping system according to claim 10, characterized in that: The barb is L-shaped and comprises a support rod (83) connected to the side plate (53) and a bending portion (84) connected to the support rod (83); the bending portion (84) is provided with a blocking surface (81) arranged opposite to the bottom plate (52).

12. The instantaneous electromagnetic tripping system according to claim 1, characterized in that: The armature (1) and the top plate (51) are respectively provided with a first padlock hole (601) and a second padlock hole (602); hooks at both ends of the spring (6) respectively pass through the first padlock hole (601) and the second padlock hole (602) for position-limiting cooperation; the armature (1) is provided with an avoidance groove (600); the avoidance groove (600) is used to avoid the spiral portion (60) of the spring (6).

13. The instantaneous electromagnetic tripping system according to claim 1, characterized in that: The top plate (51) comprises a first top plate (511), a second top plate (512) and a third top plate (513) which are arranged in sequence, the second top plate (512) is connected between the first top plate (511) and the third top plate (513), the second top plate (512) is arranged at an oblique angle to the first top plate (511) and the third top plate (513), and the armature (1) is rotatably mounted on the third top plate (513).

14. The instantaneous electromagnetic tripping system according to claim 13, characterized in that: The two ends of the spring (6) are respectively provided with a first hook (61) and a second hook (62), the first hook (61) and the second hook (62) are relatively arranged on both sides of the axis of the spiral part (60) of the spring (6), the armature (1) is provided with a first padlock hole (601), the first padlock hole (601) is arranged on the flat plate (15) of the armature (1), the first hook (61) passes through the first padlock hole (601) from the top of the armature (1) and hooks the hole wall of the first padlock hole (601), the second top plate (512) is provided with A second padlock hole (602) is provided, and a third padlock hole (603) is provided at the connection between the first top plate (511) and the second top plate (512), a limit block (604) is formed between the second padlock hole (602) and the third padlock hole (603), and the second hook (62) passes through the second padlock hole (602) and the third padlock hole (603) in sequence and then hooks the limit block (604), or the second hook (62) passes through the third padlock hole (603) and the second padlock hole (602) in sequence and then hooks the limit block (604).

Images