Tripping mechanism with adjustable magnetic tripping

Abstract

The utility model relates to a tripping mechanism with adjustable magnetic tripping. The molded case circuit breaker release solves the problem that the release action current of the existing molded case circuit breaker release cannot be adjusted. The device comprises a magnetic release. The bracket is arranged on the circuit breaker shell; the transmission part is arranged on the bracket and is used for being connected with the magnetic release; the connecting piece is used for connecting the transmission piece and the magnetic release; and the adjusting part is arranged on the bracket, is connected with the transmission part and is used for driving the transmission part to act so as to realize adjustment of action current during magnetic tripping. The beneficial effects of the utility model are that the adjusting piece and the transmission piece are arranged, and the transmission piece is driven by the action of the adjusting piece, so that the position of the connecting piece connected with the magnetic release is changed, and the action current of the magnetic release is adjusted. The utility model also has the advantages of simple structure, convenience in assembly, reliable action, long service life and the like.

Description

Technical Field

[0001] The utility model relates to a plastic case circuit breaker, in particular to a tripping mechanism with adjustable magnetic tripping. Background Art

[0002] A plastic case circuit breaker mainly consists of a contact arc extinguishing system, an operating mechanism and a tripping device. The function of the tripping device is to monitor the current and voltage operation data of the main circuit, and set a certain threshold value according to national standards to form the tripping performance of a specific protection curve. When an overload or short - circuit fault occurs in the circuit, the tripping device realizes the protection of the plastic case circuit breaker against overload or short - circuit faults through thermal effect or magnetic effect.

[0003] Traditional thermal - magnetic tripping devices mainly achieve overload protection and short - circuit protection through the cooperation of a bimetal sheet and an armature. When the circuit is overloaded, the bimetal sheet is deformed by heat, and then drives the operating mechanism to act to disconnect the circuit; when the circuit is short - circuited, the electromagnet of the thermal - magnetic tripping device generates magnetic force to adsorb the armature, so that the armature releases the main contact through the transmission mechanism after being adsorbed, playing the role of power - off protection. However, in the actual production and use process, according to different required scenarios, sometimes it is necessary to adjust the tripping action current to achieve functions such as hierarchical protection. However, the tripping action current of the existing plastic case circuit breaker is usually specific (set) and cannot be adjusted according to actual tripping needs. Summary of the Utility Model

[0004] To solve the problem that the tripping action current of the tripping device of the existing plastic case circuit breaker cannot be adjusted in the background art, the utility model provides a tripping mechanism with adjustable magnetic tripping.

[0005] The technical solution of the utility model is: a tripping mechanism with adjustable magnetic tripping, including a magnetic tripping device, and further including:

[0006] A bracket, installed on the circuit breaker housing;

[0007] A transmission member, arranged on the bracket and used for connecting with the magnetic tripping device;

[0008] A connecting member, used for connecting the transmission member and the magnetic tripping device;

[0009] An adjusting member, arranged on the bracket and connected with the transmission member, used for driving the transmission member to act to adjust the action current during magnetic tripping.

[0010] As a further improvement of the utility model, a driving part is arranged on the adjusting member, and the adjusting member drives the transmission member to rotate relative to the bracket through the driving part.

[0011] As a further improvement of the utility model, a transmission part is arranged on the transmission member, the driving part and the transmission part are correspondingly arranged, and the driving part includes a spiral structure for driving the transmission part to rotate.

[0012] As a further improvement of the present utility model, grooves and protrusions are provided at the joint surface between the adjusting member and the bracket. The adjusting member passes through the bracket and the protrusions disengage from the grooves during rotation, causing the adjusting member to move up and down relative to the bracket.

[0013] As a further improvement of the present utility model, an elastic member is further included. The elastic member is arranged between the adjusting member and the bracket, and the elastic member has a function of driving the adjusting member to approach the bracket so as to limit the adjusting member.

[0014] As a further improvement of the present utility model, a limiting block is further included, which is arranged on the adjusting member and cooperates with the bracket to limit the circumferential rotation of the adjusting member.

[0015] As a further improvement of the present utility model, the transmission member is inserted into the bracket and can rotate relative to the bracket.

[0016] As a further improvement of the present utility model, the bracket is provided with a jack and / or a slot. The transmission member includes a rotating part, and the rotating part is inserted into the jack and / or the slot, enabling the transmission member to rotate relative to the bracket.

[0017] As a further improvement of the present utility model, a connecting part is provided on the transmission member. The connecting part rotates synchronously with the rotating part, and a connecting member is arranged on the connecting part to adjust the distance from the magnetic release when the connecting part rotates.

[0018] As a further improvement of the present utility model, the connecting member is a spring, and the spring is connected to the armature on the magnetic release.

[0019] The beneficial effects of the present utility model are as follows: an adjusting member and a transmission member are provided. The movement of the adjusting member drives the transmission member, thereby changing the position of the connecting member connected to the magnetic release, and enabling the adjustment of the operating current of the magnetic release. The present utility model also has the advantages of simple structure, convenient assembly, reliable operation, and long service life. Description of the Drawings

[0020] Attached Figure 1 is a schematic structural view of an embodiment of the present utility model.

[0021] Attached Figure 2 is a schematic structural view of the bracket in an embodiment of the present utility model.

[0022] Attached Figure 3 is an exploded structural view of Attached Figure 2 .

[0023] Attached Figure 4 is a schematic structural view of the adjusting member in an embodiment of the present utility model.

[0024] In the figure, 1 is a bracket; 11 is a protrusion; 12 is a slot; 2 is a transmission member; 21 is a transmission part; 22 is a rotating part; 23 is a connecting part; 3 is a connecting member; 4 is an adjusting member; 41 is a driving part; 42 is a groove; 43 is an elastic member; 44 is a limiting block. Detailed implementation mode

[0025] The following further describes the embodiments of the present invention with reference to the accompanying drawings:

[0026] From Figure 1 Combined with Figures 2 - 4 As shown, a tripping mechanism with magnetic tripping adjustable includes a magnetic release, and further includes:

[0027] A bracket 1, installed on the circuit breaker housing;

[0028] A transmission member 2, arranged on the bracket 1 and used to be connected to the magnetic release;

[0029] A connecting member 3, used to connect the transmission member 2 and the magnetic release;

[0030] An adjusting member 4, arranged on the bracket 1 and connected to the transmission member 2, used to drive the transmission member 2 to act to adjust the magnetic tripping time. The beneficial effect of the present invention is that an adjusting member and a transmission member are provided. By the action of the adjusting member to drive the transmission member, the position of the connecting member connected to the magnetic release changes, so that the tripping time of the magnetic release is adjustable. The present invention also has the advantages of simple structure, convenient assembly, reliable action, long service life, etc. Specifically, the connecting member 3 is a spring, and the spring is connected to the armature on the magnetic release. The tripping structure includes thermal tripping and magnetic tripping. The magnetic release includes an armature. Adjusting the deformation amount of the spring on the armature can change the pulling force provided by the spring, and further adjust the magnitude of the tripping current of the tripping mechanism, that is, the magnitude of the operating current required for magnetic tripping can be adjusted.

[0031] The adjusting member 4 is provided with a driving part 41, and the adjusting member 4 drives the transmission member 2 to rotate relative to the bracket through the driving part 41. In the present invention, the adjusting member rotates the transmission member.

[0032] The transmission member 2 is provided with a transmission part 21, the driving part 41 is correspondingly arranged with the transmission part 21, and the driving part 41 includes a spiral structure for driving the transmission part 21 to rotate. Such a structure enables the transmission member to rotate reliably and conveniently when the adjusting member rotates, changes the distance between the connecting part 23 and the armature, and further changes the working stroke of the spring, thereby changing the pulling force provided by the spring, so as to realize the adjustment of the magnetic tripping operating current.

[0033] A groove 42 and a protrusion 11 are provided at the joint surface between the adjusting member 4 and the bracket 1. The adjusting member 4 passes through the bracket 1 and when rotated, the protrusion 11 disengages from the groove 42, causing the adjusting member 4 to slide axially relative to the bracket along the axis of the adjusting member 4, driving the driving portion 41 to rotate. The present utility model further includes an elastic member 43 disposed between the adjusting member 4 and the bracket 1, and the elastic member 43 has a function of driving the adjusting member 4 to approach the bracket to limit the adjusting member 4. During installation, aligning the groove and the protrusion facilitates installation. A washer (elastic member) is sleeved on the adjusting member and fastened with a clamp. When the knob (adjusting member) is rotated, due to the protrusion of the bracket, the knob will move downward, and the upper elastic member (washer) will deform due to the downward movement of the knob, that is, the knob compresses the elastic member and the elastic member generates an upward force acting on the first adjusting member, thereby increasing the pressure between the first adjusting member and the bracket, so as to increase the relative friction to hold the adjusting member (and thus provide a reaction force to ensure there is sufficient friction on the connecting surface between the knob and the protrusion), ensuring there is sufficient friction on the connecting surface between the knob and the protrusion, and preventing the knob from displacing, so that the transmission member and the adjusting member will not shift during the transportation or after the adjustment of the circuit breaker is completed.

[0034] The present utility model further includes a limiting block 44 disposed on the adjusting member 4 to cooperate with the bracket 1 to limit the circumferential rotation of the adjusting member 4. Specifically, the limiting block can cooperate with the bracket for limitation, or can be disposed on the plane where the protrusion is located, or a stop block cooperating with the limiting block is provided on the plane where the protrusion is located, so as to limit the rotation of the first adjusting member.

[0035] The transmission member 2 is inserted into the bracket 1 and can rotate relative to the bracket 1. Specifically, the bracket 1 is provided with a jack and / or a slot 12, and the transmission member 2 includes a rotating portion 22, and the rotating portion 22 is inserted into the jack and / or the slot 12, enabling the transmission member 2 to rotate relative to the bracket 1. Such a structure facilitates the installation and fixation of the transmission member, and is convenient for disassembly and assembly.

[0036] The transmission member 2 is provided with a connecting portion 23, and the connecting portion 23 rotates synchronously with the rotating portion 22. The connecting member 3 is disposed on the connecting portion 23 and adjusts the distance from the magnetic release when the connecting portion 23 rotates. Such a structure facilitates the reliable swing of the transmission member, has a simple structure, and is convenient for connecting with the magnetic release.

[0037] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0038] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of the present utility model, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0039] All technicians should note that although the present utility model has been described according to the above specific embodiments, the inventive concept of the present utility model is not limited to this utility model only. Any modification using the inventive concept of the present utility model will be included in the scope of the patent protection of the present utility model.

Claims

1. A tripping mechanism with adjustable magnetic tripping, comprising a magnetic tripper, characterized in that Also included: A bracket (1) is mounted on the circuit breaker housing; A transmission member (2) is disposed on the bracket (1) and is used to be connected to the magnetic release; A connecting member (3) used for connecting the transmission member (2) and the magnetic release; The adjusting member (4) is arranged on the bracket (1) and is connected to the transmission member (2) and is used to drive the transmission member (2) to move so as to adjust the operating current during magnetic tripping.

2. A tripping mechanism with adjustable magnetic tripping according to claim 1, characterized in that The adjusting member (4) is provided with a driving part (41), and the adjusting member (4) drives the transmission member (2) to rotate relative to the bracket through the driving part (41).

3. A tripping mechanism with adjustable magnetic tripping according to claim 2, characterized in that The transmission member (2) is provided with a transmission part (21), the driving part (41) is arranged corresponding to the transmission part (21), and the driving part (41) comprises a spiral structure for driving the transmission part (21) to rotate.

4. A tripping mechanism with adjustable magnetic tripping according to claim 2, characterized in that A groove (42) and a protrusion (11) are provided at the mating surface between the adjusting member (4) and the bracket (1); the adjusting member (4) is arranged to pass through the bracket (1) and when rotating, the protrusion (11) disengages from the groove (42) so that the adjusting member (4) moves up and down relative to the bracket.

5. A tripping mechanism with adjustable magnetic tripping according to claim 4, characterized in that It also includes an elastic member (43), the elastic member (43) being arranged between the adjusting member (4) and the bracket (1), the elastic member (43) having the function of driving the adjusting member (4) to approach the bracket so as to limit the position of the adjusting member (4).

6. A tripping mechanism with adjustable magnetic tripping according to claim 1, characterized in that It also includes a limit block (44) which is arranged on the adjusting member (4) and cooperates with the bracket (1) to limit the adjusting member (4) to rotate in the circumferential direction.

7. A tripping mechanism with adjustable magnetic tripping according to claim 1, characterized in that The transmission member (2) is inserted into the bracket (1) and can rotate relative to the bracket (1).

8. A tripping mechanism with adjustable magnetic tripping according to claim 7, characterized in that The bracket (1) is provided with a plug hole and / or a slot (12), and the transmission member (2) comprises a rotating portion (22). The rotating portion (22) is inserted into the plug hole and / or the slot (12) and enables the transmission member (2) to rotate relative to the bracket (1).

9. A tripping mechanism with adjustable magnetic tripping according to claim 8, characterized in that The transmission member (2) is provided with a connecting portion (23), the connecting portion (23) rotates synchronously with the rotating portion (22), and the connecting member (3) is provided on the connecting portion (23) and adjusts the distance between the connecting portion (23) and the magnetic release when the connecting portion (23) rotates.

10. A tripping mechanism with adjustable magnetic tripping according to claim 1, characterized in that The connecting piece (3) is a spring, and the spring is connected to the armature on the magnetic release.

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