Miniature circuit breaker convenient to install

Abstract

The utility model discloses a miniature circuit breaker convenient to install. The problem that an existing miniature circuit breaker is troublesome to assemble is solved. The device comprises a shell, the contact mechanism is arranged in the shell; the contact mechanism comprises a static contact piece and a moving contact piece. The wiring terminal is arranged in the shell and used for being connected with a load, and the wiring terminal is connected with the movable contact piece; the connector is arranged in the shell and used for being connected with the static contact piece; the connector is provided with a jack part for an external plug to insert, and the jack part is provided with a first folded position and a second unfolded position convenient for the external plug to insert. The beneficial effects of the utility model are that the socket connector is arranged, rapid plugging is realized through the plugging hole part, the structure is simple, the connection of the circuit breaker is convenient and reliable, and the replacement is convenient. 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 the field of low-voltage electrical appliances, in particular to a small circuit breaker which is easy to install. Background Art

[0002] Miniature circuit breakers (English name: Miniature Circuit Breaker), also known as microcircuit breakers, are suitable for overload and short-circuit protection of low-voltage lines. They can also be used for infrequent operation conversion of lines under normal circumstances. Miniature circuit breakers are mainly used in various places such as industry, commerce, high-rise and residential buildings. Miniature circuit breakers usually include a housing, an operating mechanism, a tripping system, a contact system, an arc extinguishing system, etc. The operating mechanism drives the moving contact in the contact system through the operating handle to connect and disconnect the miniature circuit breaker to control the electrical circuit; by sensing the thermal effect and magnetic effect of the current, protection is implemented when the electrical circuit is overloaded, short-circuited, and other faults occur. During the disconnection process of the moving contact and the static contact, an arc will be generated. The arc is usually led to the arc extinguishing chamber of the arc extinguishing system through the arc-starting piece. When the arc is introduced into the arc extinguishing chamber, it is divided into many sections by the metal grid in the arc extinguishing chamber. Each arc generates a near-pole voltage near the metal grid, which rapidly increases the voltage drop of the entire arc and extinguishes the arc. The existing wiring terminal is arranged in the housing. In order to facilitate the fixing of the external wire, the wiring terminal is usually tightened with screws to fix the wire. Therefore, two wiring terminals are usually arranged on the circuit breaker, one wiring terminal is connected to the external power line, and the other wiring terminal is connected to the load. The two wiring terminals are respectively connected to the static contact piece and the moving contact piece. When the moving contact piece moves and fits with the static contact piece, the circuit is turned on. However, in some existing special places, such as fire protection, petrochemical and other major places where power outages are not allowed, it is usually required that the circuit breaker be replaced conveniently and quickly, but the method of screwing the thread makes the replacement of the circuit breaker more troublesome and the product installation is inconvenient. Utility Model Content

[0003] In order to solve the problem that the existing small circuit breakers in the background technology are troublesome to assemble, the utility model provides a small circuit breaker that is easy to install.

[0004] The technical solution of the utility model is: a small circuit breaker that is easy to install, including a housing, and also includes:

[0005] A contact mechanism is arranged in the housing; the contact mechanism comprises a stationary contact piece and a moving contact piece;

[0006] A wiring terminal is arranged in the housing and is used for connecting to a load, and the wiring terminal is connected to the moving contact piece;

[0007] The connector is arranged in the housing and is used to connect with the stationary contact piece. The connector is provided with a socket part for inserting an external plug. The socket part has a first position for folding and a second position for opening to facilitate inserting the external plug.

[0008] As a further improvement of the present invention, the connector includes two connector pins, and the two connector pins cooperate with each other to form the connector hole.

[0009] As a further improvement of the utility model, it also includes an elastic member, which acts on the connector pins and makes the two connector pins have a movement tendency to retract towards each other.

[0010] As a further improvement of the utility model, the connector is provided with a connecting portion, and the connecting portion is respectively connected to the two connector pins and allows a certain elasticity between the two connector pins.

[0011] As a further improvement of the utility model, an elastic pressure foot is provided on the elastic member, and the elastic pressure foot presses on the outer side of the connector pin portion relative to the connector hole portion and makes the two connector pin portions have a movement tendency to retract toward each other.

[0012] As a further improvement of the utility model, a limiting portion for limiting the position of the elastic member is provided on the connecting portion.

[0013] As a further improvement of the utility model, a guide portion is provided on the connector pin portion, and the guide portion is turned outward relative to the connector hole portion.

[0014] As a further improvement of the utility model, a receiving groove is provided in the shell, a partition is provided in the receiving groove, the partitions cooperate with each other to form a limiting groove, and the connector is arranged in the receiving groove and limited by the limiting groove.

[0015] As a further improvement of the present utility model, the connector is provided with a wiring portion for connecting with the static contact piece, the wiring portion is arranged in a T shape, the wiring portion is inserted into the limiting groove and is limited by the limiting groove, and the shell is provided with a clearance hole at the connector, and the clearance hole is arranged in an L shape.

[0016] As a further improvement of the present invention, the outer surface of the side wall of the shell is inwardly recessed to form a groove; a plurality of heat dissipation grooves and / or heat dissipation ribs are provided in the groove.

[0017] The utility model has the advantages of providing a connector, realizing quick plug-in and pull-out through the connector hole, having a simple structure, convenient and reliable connection of the circuit breaker, and convenient replacement. The utility model also has the advantages of simple structure, convenient assembly, reliable operation, and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0019] Attached Figure 2 It is a schematic diagram of the structure inside the shell of an embodiment of the utility model.

[0020] Attached Figure 3 The figure is a schematic diagram of the explosion structure of an embodiment of the utility model.

[0021] Attached Figure 4 It is a schematic diagram of the explosion structure of the connector in the embodiment of the utility model.

[0022] In the figure, 1. shell; 11. accommodating groove; 12. partition; 13. limiting groove; 14. giving hole; 15. groove; 16. heat dissipation groove; 2. contact mechanism; 21. static contact piece; 22. moving contact piece; 3. wiring terminal; 4. connector; 41. socket part; 42. socket pin part; 43. connecting part; 44. limiting part; 45. guide part; 46. wiring part; 5. elastic member; 51. elastic pressure foot. DETAILED DESCRIPTION

[0023] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0024] Depend on Figure 1 Combination Figure 2-4 As shown, a small circuit breaker that is easy to install includes a housing 1 and also includes:

[0025] The contact mechanism 2 is arranged in the housing 1; the contact mechanism 2 comprises a stationary contact piece 21 and a moving contact piece 22;

[0026] The wiring terminal 3 is provided in the housing 1 and is used for connecting to a load. The wiring terminal 3 is connected to the moving contact piece 22;

[0027] The connector 4 is arranged in the housing 1 and is used to connect with the static contact piece 21; the connector 4 is provided with a socket portion 41 for inserting an external plug, and the socket portion 41 has a first position of being folded and a second position of being opened for inserting an external plug. The beneficial effect of the utility model is that a connector is provided, and quick plugging and unplugging are realized through the socket portion, the structure is simple, and the circuit breaker connection is convenient and reliable, and it is easy to replace. The utility model also has the advantages of simple structure, convenient assembly, reliable operation, and long service life. For safety reasons, the load end is still connected in the form of a terminal block, and the other end is connected in the form of a connector, so that the electrical connection of this end can be realized by plugging and unplugging, the structure is simple, and the installation is convenient and reliable.

[0028] The connector 4 includes two connector pins 42, which cooperate with each other to form the connector hole 41. Specifically, it also includes an elastic member 5, which acts on the connector pins 42 and makes the two connector pins 42 have a movement tendency to close together. The setting of the elastic member allows the connector pins to close together, and when plugged into an external plug, a reliable connection can be achieved. The connector and the external plug can be realized in the form of a sub-busbar. It can also be realized in the form of a connector column and a connector hole.

[0029] The connector 4 is provided with a connecting portion 43, which is respectively connected to the two plug pins 42 and allows a certain elasticity between the two plug pins 42. Specifically, the elastic member 5 is provided with an elastic presser foot 51, which presses on the outer side of the plug pin 42 relative to the plug hole 41 and allows the two plug pins 42 to have a movement tendency to close to each other. Specifically, the elastic presser foot is arranged in a C shape, which can provide reliable elastic force, facilitate clamping, and make the connection convenient and reliable.

[0030] The connecting portion 43 is provided with a limiting portion 44 for limiting the position of the elastic member 5. This facilitates the limiting of the elastic member and prevents the elastic member from shaking or shifting.

[0031] The connector pin 42 is provided with a guide portion 45, and the guide portion 45 is turned outward relative to the connector hole 41. The guide portion is provided to facilitate quick and convenient matching with an external plug, and has a simple structure and is easy to disassemble and assemble.

[0032] The housing 1 is provided with a receiving groove 11, and a partition 12 is provided in the receiving groove 11. The partitions 12 cooperate with each other to form a limiting groove 13. The connector 4 is provided in the receiving groove 11 and is limited by the limiting groove 13. Specifically, the connector 4 is provided with a wiring portion 46 that is convenient for connecting with the static contact piece 21. The wiring portion 46 is arranged in a T shape. The wiring portion 46 is inserted into the limiting groove 13 and is limited by the limiting groove 13. The housing 1 is provided with a clearance hole 14 at the connector 4, and the clearance hole 14 is arranged in an L shape. Such a structural housing can reliably accommodate the limited connector, has a simple structure, and avoids the displacement of the connector and the inability to reliably plug and unplug.

[0033] The outer surface of the side wall of the housing 1 is inwardly concave to form a groove 15; a plurality of heat dissipation grooves 16 and / or heat dissipation ribs are arranged in the groove 15. Such a structure facilitates heat dissipation, reduces the volume of the housing, increases the air flow area, facilitates rapid and reliable heat dissipation, and provides breaking performance.

[0034] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, 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 specified, "plurality" means two or more.

[0036] Technical personnel should note: Although the utility model has been described according to the above specific implementation methods, the utility model concept is not limited to this utility model. Any modification using the utility model concept will be included in the scope of protection of the utility model patent right.

Claims

1. A small circuit breaker that is easy to install, comprising a housing (1), characterized in that Also included: A contact mechanism (2) is arranged in the housing (1); the contact mechanism (2) comprises a stationary contact piece (21) and a movable contact piece (22); A wiring terminal (3) is disposed in the housing (1) and is used for connecting to a load, wherein the wiring terminal (3) is connected to the moving contact piece (22); A connector (4) is disposed in the housing (1) and is used to connect to the stationary contact piece (21); the connector (4) is provided with a socket portion (41) for inserting an external plug, and the socket portion (41) has a first position of being folded and a second position of being opened for facilitating the insertion of the external plug.

2. A small circuit breaker that is easy to install according to claim 1, characterized in that The connector (4) comprises two connector pins (42), and the two connector pins (42) cooperate with each other to form the connector hole (41).

3. A small circuit breaker that is easy to install according to claim 2, characterized in that It also comprises an elastic member (5), wherein the elastic member (5) acts on the connector pins (42) and causes the two connector pins (42) to have a movement tendency of being retracted towards each other.

4. A small circuit breaker that is easy to install according to claim 3, characterized in that The connector (4) is provided with a connecting portion (43), and the connecting portion (43) is respectively connected to the two connector pins (42) and enables a certain elasticity between the two connector pins (42).

5. A small circuit breaker that is easy to install according to claim 4, characterized in that The elastic member (5) is provided with an elastic pressure foot (51), and the elastic pressure foot (51) presses against the outer side of the connector pin portion (42) relative to the connector hole portion (41) and causes the two connector pin portions (42) to have a movement tendency to retract toward each other.

6. A small circuit breaker that is easy to install according to claim 4, characterized in that The connecting portion (43) is provided with a limiting portion (44) for limiting the position of the elastic member (5).

7. A small circuit breaker that is easy to install according to claim 2, characterized in that The connector pin portion (42) is provided with a guide portion (45), and the guide portion (45) is turned outward relative to the connector hole portion (41).

8. A small circuit breaker that is easy to install according to claim 1, characterized in that The housing (1) is provided with a receiving groove (11), the receiving groove (11) is provided with a partition (12), the partitions (12) cooperate with each other to form a limiting groove (13), and the connector (4) is arranged in the receiving groove (11) and is limited by the limiting groove (13).

9. A small circuit breaker that is easy to install according to claim 8, characterized in that The connector (4) is provided with a wiring portion (46) for connecting to the stationary contact piece (21), the wiring portion (46) being arranged in a T-shape, the wiring portion (46) being inserted into the limiting groove (13) and being limited by the limiting groove (13), and the housing (1) is provided with a clearance hole (14) at the connector (4), the clearance hole (14) being arranged in an L-shape.

10. A small circuit breaker that is easy to install according to claim 1, characterized in that The outer surface of the side wall of the shell (1) is recessed inwards to form a groove (15); a plurality of heat dissipation grooves (16) and / or heat dissipation ribs are provided in the groove (15).

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