Clapper type circuit breaker

Abstract

The utility model discloses a clapper type circuit breaker, which comprises a shell, a handle arranged on the shell and a tripping mechanism arranged in the shell, and the handle is linked with the tripping mechanism. A magnet yoke is also arranged in the shell, and an armature is arranged above the magnet yoke; the armature comprises an attraction part, one end of the attraction part is arranged on a supporting shaft arranged on the inner wall face of the shell in a sleeving mode through an arranged shaft pin base, and the armature is promoted to be separated from the magnet yoke in the normal state through an arranged torsional spring. The armature of the equipment is sleeved on the supporting shaft in the shell through the shaft pin seat, and the armature is promoted to be separated from the magnet yoke in a normal state through the torsion spring, so that on one hand, the number of limiting parts for limiting the position of the armature is reduced, the internal structure of the shell is optimized, and the assembling efficiency of the equipment can be improved; and 2, the number of the limiting parts is reduced, so that the processing difficulty and complexity of the shell are reduced, and the production cost of equipment is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electrical equipment, concretely to a snap-on circuit breaker. BACKGROUND

[0002] The structure of the existing snap-on electromagnetic circuit breaker, such as the prior art with the announcement number CN117038411A, is roughly as follows: at least including: a shell, a switch contact, a rotating setting on the shell and having an open state and a closed state, and a tripping mechanism, which is set in the shell and is linked with the switch contact; wherein the tripping mechanism includes: a lock, which is rotatably set in the shell; a magnetic yoke, which is installed in the shell and is fixed relative to the shell; an armature, which is movably set on one side of the magnetic yoke and has an attraction section for attracting the magnetic yoke and a touch section for touching the lock; and a tension spring, one end of which is hooked on the shell and the other end is hooked on the armature; the shell is provided with a plurality of fixed points for hooking the tension spring.

[0003] From the above content and in combination with the accompanying drawings, it can be clearly found that the magnetic yoke, the armature and the tension spring for promoting the separation of the armature from the magnetic yoke in the normal state are arranged relatively crowded in the interior of the shell, and in order to realize the structure of smooth closing and opening of the armature, a plurality of limiting parts need to be matched. Since the matching points are more, once the armature moves slightly, it is easy to cause the problem of work failure of the armature, and when the one end of the armature rotates in the limiting part, the phenomenon of jamming is also easy to occur. SUMMARY

[0004] The utility model aims at providing a snap-on circuit breaker to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a snap-on circuit breaker, which comprises a shell, a handle installed on the shell and a tripping mechanism installed in the shell, and the handle is linked with the tripping mechanism; the interior of the shell is also provided with a magnetic yoke, and an armature is arranged above the magnetic yoke; the armature comprises an attraction part, one end of the attraction part is sleeved on a supporting shaft arranged on the inner wall surface of the shell through an arranged shaft pin seat, and a torsional spring is arranged to promote the armature to separate from the magnetic yoke in the normal state.

[0006] As a preferred technical scheme of the utility model: the interior of the shell is also provided with a limiting part; wherein one end of the torsional spring is connected with the limiting part, and the other end of the torsional spring abuts on the attraction part.

[0007] As a preferred technical scheme of the utility model: one side of the limiting part facing the magnetic yoke is also provided with a limiting groove, and the number of the limiting grooves is multiple.

[0008] As a preferred technical scheme of the utility model: the inside of the shell is further equipped with a limiting column for limiting the rotation of the armature.

[0009] As a preferred technical scheme of the utility model: the attracting part is contacted with the tripping mechanism through the push part, wherein the push part is arc-shaped, and the attracting part is further equipped with a through hole.

[0010] As a preferred technical scheme of the utility model: the magnetic yoke comprises a base mounted in the shell and a static contact mounted on the base, and the static contact is riveted on the base through the rivet penetrating the static contact.

[0011] As a preferred technical scheme of the utility model: one end of the static contact is further equipped with an arc guide plate, and a contact point is arranged on the arc guide plate, and one side of the arc guide plate facing the contact point is further equipped with a notch.

[0012] As a preferred technical scheme of the utility model: the tripping mechanism comprises a contact support and a movable contact rotatably mounted on the contact support, wherein one side of the contact support is equipped with an axle hole, and an axle pin is arranged at the center of the axle hole, and the movable contact is sleeved on the axle pin through the circular hole.

[0013] As a preferred technical scheme of the utility model: the axle hole is further equipped with an avoiding slot, and one side of the avoiding slot is contacted with the movable contact through a limiting surface.

[0014] As a preferred technical scheme of the utility model: the other side of the avoiding slot is further equipped with an abutting surface, and the movable contact is further equipped with a mounting slot.

[0015] The utility model discloses a beneficial effect is: because the armature of the equipment is sleeved on the supporting shaft in the shell through the axle seat, and the torsional spring is used to make the armature separate from the magnetic yoke in normal state, first, the number of limiting parts for limiting the position of the armature is reduced, thereby the internal structure of the shell is optimized, and the assembly efficiency of the equipment can be improved, second, because the number of limiting parts is reduced, the machining difficulty and complexity of the shell are reduced, so that the production cost of the equipment is also reduced, third, the armature is sleeved on the supporting shaft and limited on the supporting shaft through the torsional spring, then when the two shells are closed, the stability of the armature during work can be effectively guaranteed, and the rotation of the axle seat on the supporting shaft can solve the problems of the armature in the prior art, such as easy to appear jamming and easy to appear work failure. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the exploded schematic view of the main body structure of the utility model;

[0017] Figure 2 It is the internal structure layout schematic view of the shell of the utility model;

[0018] Figure 3 It is the main body structure schematic view of the shell of the utility model;

[0019] Figure 4 It is Figure 3 It is the local enlarged schematic view of A place in the middle;

[0020] Figure 5 It is the exploded structure schematic view of armature and torsion spring of the utility model;

[0021] Figure 6 It is the exploded structure schematic view of magnetic yoke of the utility model;

[0022] Figure 7 It is Figure 6 It is the local enlarged schematic view of B place in the middle;

[0023] Figure 8 It is the exploded structure schematic view of tripping mechanism of the utility model.

[0024] In the drawing: 1, shell;2, handle;3, tripping mechanism;30, contact support;31, shaft pin rod;32, shaft hole;33, limiting surface;34, moving contact;35, abutting surface;36, installation groove;37, round hole;38, avoiding groove;4, limiting part;5, armature;50, attraction part;51, shaft pin seat;52, torsion spring;53, through hole;54, pushing part;6, magnetic yoke;60, base;61, rivet;62, static contact;63, contact point;64, arc guide plate;65, slot;7, limiting column;8, limiting groove;9, supporting shaft. DETAILED DESCRIPTION

[0025] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as a limitation of the utility model. In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "upper surface" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the utility model.

[0026] Please refer to Figures 1-8The utility model provides a kind of embodiment: a kind of snap circuit breaker, including shell 1, handle 2 being installed on the shell 1 and tripping mechanism 3 being installed in the shell 1, and the handle 2 is linked with the tripping mechanism 3;The inside of the shell 1 is further equipped with magnetic yoke 6, and is equipped with armature 5 above the magnetic yoke 6;The armature 5 includes suction part 50, and one end of the suction part 50 is set on the support shaft 9 on the inner wall surface of the shell 1 by being equipped with shaft pin seat 51, and is separated from the magnetic yoke 6 in normal state by being equipped with torsion spring 52 and promotes the armature 5.

[0027] As the armature 5 of the device is sleeved on the support shaft 9 in the shell 1 by the shaft pin seat 51, and the torsion spring 52 is used to separate the armature 5 from the magnetic yoke 6 in normal state, the number of limiting parts for limiting the position of the armature 5 is reduced, the internal structure of the shell 1 is optimized, and the assembly efficiency of the device is improved.

[0028] Further, the inside of the shell 1 is further equipped with limiting part 4;Wherein, one end of the torsion spring 52 is connected with the limiting part 4, and the other end of the torsion spring 52 is in contact with the suction part 50. Therefore, the relative position of the torsion spring 52 can be fixed by the cooperation of the limiting part 4 and the suction part 50, and the suction part 50 and the magnetic yoke 6 can be separated in normal state by the torsion spring 52.

[0029] Further, the side of the limiting part 4 facing the magnetic yoke 6 is further equipped with limiting slot 8, and the number of the limiting slot 8 is multiple, so that the torsion of the torsion spring 52 can be increased or decreased when the one end of the torsion spring 52 away from the suction part 50 is connected with the limiting slot 8 in different positions, and the fixed position between the torsion spring 52 and the shell 1 can be adjusted according to actual needs, so that the force arm of the torsion spring 52 can be adjusted to compatible with different suction forces generated by different current specifications, thereby expanding the application range of the device. At the same time, the limiting slot 8 is slotted on the limiting part 4, so that the limiting slot 8 is more simple and convenient to process, thereby reducing the production cost of the device, and the limiting slot 8 is also convenient for the installation of the torsion spring 52 to improve the assembly efficiency of the torsion spring 52.

[0030] Meanwhile, in order to ensure the reliability of the armature 5 in operation, the inside of the shell 1 is further provided with a limiting column 7 for limiting the rotation of the armature 5. Based on this, when one end of the armature 5 contacts the limiting column 7, the limiting column 7 can block the armature 5 from continuing to rotate counterclockwise, thereby effectively avoiding the problem that the armature 5 and the magnetic yoke 6 cannot be smoothly contacted due to excessive rotation of the armature 5.

[0031] In addition, the suction part 50 is in contact with the tripping mechanism 3 through the provided pushing part 54; wherein the pushing part 54 is in the shape of a circular arc, so that the pushing part 54 in the shape of a circular arc has small resistance during pushing and does not emit abnormal sound, and in particular, the wear speed of the pushing part 54 and the tripping mechanism 3 can be slowed down. Further, since the suction part 50 is further provided with a through hole 53, the weight of the armature 5 can be reduced, and heat dissipation can be performed by using the through hole 53.

[0032] On the basis of the above-mentioned scheme, the magnetic yoke 6 includes a base 60 mounted inside the shell 1 and a static contact 62 mounted on the base 60, and the base 60 is riveted to the static contact 62 through the rivet 61 penetrating the static contact 62. Since the static contact 62 and the base 60 are riveted together, the static contact 62 can be reliably and stably located on the base 60 to ensure that the static contact 62 will not displace during operation. In particular, since the displacement of the static contact 62 can be effectively solved, the phenomenon of sparking when the tripping mechanism 3 contacts the static contact 62 can be effectively avoided; based on this, the contact part between the static contact 62 and the tripping mechanism 3 will not be ablated, thereby prolonging the service life of the two while ensuring the stability of the circuit.

[0033] Further, since one end of the static contact 62 is further provided with an arc striking plate 64, and the arc striking plate 64 is further provided with a contact 63, and the side of the arc striking plate 64 facing the contact 63 is further provided with a notch 65, the flow of air can be realized by using the notch 65, and the heat generated by the contact 63 can be quickly released.

[0034] On the basis of the above-mentioned scheme, since the tripping mechanism 3 includes a contact support 30 and a moving contact 34 rotatably mounted on the contact support 30; wherein one side of the contact support 30 is provided with a shaft hole 32, and a shaft pin 31 is provided at the center of the shaft hole 32, and the moving contact 34 is sleeved on the shaft pin 31 through the provided circular hole 37. Based on this, when the circular hole 37 is sleeved on the shaft pin 31, the moving contact 34 can swing on the shaft pin 31, and it is also convenient to install a reset member, such as a torsional spring (not shown in the figure), into the shaft hole 32, so as to use the reset member to make the moving contact 34 abut against the contact support 30.

[0035] Further, since the shaft hole 32 is further provided with the avoiding groove 38, and one side of the avoiding groove 38 is in contact with the moving contact 34 through the provided limiting surface 33, the limiting surface 33 of the avoiding groove 38 can block the moving contact 34.

[0036] Further, the other side of the avoiding groove 38 is further provided with the abutting surface 35, and the moving contact 34 is further provided with the mounting groove 36, thus, when one end of the reset member abuts on the abutting surface 35 and the other end abuts in the mounting groove 36, the reset member can make the moving contact 34 reliably adhere to the limiting surface 33.

[0037] In summary, the setting of the avoiding groove 38 is convenient for fixing the reset member, and at the same time makes the moving contact 34 rotate in the direction away from the limiting surface 33, that is, when the moving contact 34 abuts on the static contact 62, the moving contact 34 can swing in the avoiding groove 38, so that the moving contact 34 and the static contact 62 have a buffer space at the moment of contact, to avoid the problem that the moving contact 34 and the static contact 62 are damaged due to rigid impact between them.

[0038] The embodiments of the utility model are described in detail above combined with the drawings, but the utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and still fall within the protection scope of the utility model.

Claims

1. A snap switch circuit breaker characterized by: The utility model relates to a magnetic contactor, including shell (1), handle (2) installed on the shell (1) and tripping mechanism (3) installed in the shell (1), and the handle (2) is linked with the tripping mechanism (3), The shell (1) is internally provided with a magnetic yoke (6), and an armature (5) is arranged above the magnetic yoke (6); The armature (5) comprises an attraction part (50), one end of the attraction part (50) is sleeved on a support shaft (9) arranged on the inner wall of the shell (1) through an arranged shaft pin seat (51), and a torsional spring (52) is arranged to separate the armature (5) from the magnetic yoke (6) in the normal state.

2. The snap switch circuit breaker of claim 1, wherein: The shell (1) is internally provided with a limiting part (4); one end of the torsional spring (52) is connected to the limiting part (4), and the other end of the torsional spring (52) abuts against the attraction part (50).

3. The snap switch circuit breaker of claim 2, wherein: The limiting part (4) is further provided with a plurality of limiting grooves (8) on the side facing the magnetic yoke (6).

4. The snap switch circuit breaker of claim 3, wherein: The shell (1) is internally provided with a limiting column (7) for limiting the rotation of the armature (5).

5. The snap switch circuit breaker of claim 4, wherein: The attraction part (50) is in contact with the tripping mechanism (3) through a push part (54) arranged thereon; the push part (54) is in the shape of a circular arc, and a through hole (53) is further arranged on the attraction part (50).

6. A snap switch according to any one of claims 1-4, characterized in that: The magnetic yoke (6) comprises a base (60) installed in the shell (1) and a static contact (62) installed on the base (60), and the base (60) is riveted to the static contact (62) through a rivet (61) penetrating through the static contact (62).

7. The snap switch circuit breaker of claim 6, wherein: One end of the static contact (62) is further provided with an arc guide plate (64), and a contact point (63) is arranged on the arc guide plate (64); the side of the arc guide plate (64) facing the contact point (63) is further provided with a notch (65).

8. The snap switch circuit breaker of claim 7, wherein: The tripping mechanism (3) comprises a contact support (30) and a movable contact (34) rotatably installed on the contact support (30); one side of the contact support (30) is provided with a shaft hole (32), and a shaft pin (31) is arranged at the center of the shaft hole (32); the movable contact (34) is sleeved on the shaft pin (31) through a circular hole (37) arranged thereon.

9. The snap switch circuit breaker of claim 8, wherein: An avoidance groove (38) is further arranged on the shaft hole (32), and one side of the avoidance groove (38) is in contact with the movable contact (34) through a limiting surface (33) arranged thereon.

10. The snap switch circuit breaker of claim 9, wherein: The other side of the avoidance groove (38) is further provided with an abutting surface (35), and the movable contact (34) is further provided with a mounting groove (36).

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