Power taking mechanism of circuit breaker

Abstract

The utility model relates to a breaker power taking mechanism, comprising a housing, a contact seat arranged in the housing, a button and a torsion spring, the contact seat is provided with a moving contact, the torsion spring comprises a first extension arm and a second extension arm, the first extension arm is arranged below the button, and the breaker power taking mechanism also comprises an electromagnetic system and a spring sheet arranged in the housing. The spring piece is located below the first extension arm, the electromagnetic system comprises a magnet yoke, a static contact is arranged on the magnet yoke, the moving contact is located between the spring piece and the static contact, during closing, the contact base rotates to drive the moving contact to move, the moving contact is in contact with the spring piece and the static contact, and the torsional spring is in contact with the spring piece and the static contact under the action of the button. When the switch is switched off, the contact seat rotates to drive the moving contact to move, the moving contact is separated from the spring piece and the static contact, and the circuit is switched off. By adopting the technical scheme, the utility model provides the circuit breaker electricity taking mechanism, and no matter how to connect wires, electricity taking can be realized after the circuit breaker is opened.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a power supply mechanism for a circuit breaker. Background Art

[0002] The circuit breaker consists of a casing, a handle, an operating mechanism, a contact system, a zero-sequence current transformer, a leakage test tripping mechanism and an arc extinguishing system.

[0003] At present, leakage circuit breaker products generally indicate the incoming and outgoing terminals on the products. However, both upper and lower incoming terminals may appear during the user's use and wiring process, causing great trouble to the user. The power supply of the test circuit or circuit board of some products is linked to the handle. When the handle is in the closed position, the circuit board and the test circuit have power. When the product handle is in the disconnected position, the product circuit board and the test circuit have no power. However, when the user uses the product, the handle is locked or stuck by other objects, causing the handle to be not in the disconnected position. At this time, there is power on the circuit board, causing the circuit board to burn. Summary of the invention

[0004] Purpose of the utility model: In order to overcome the defects of the prior art, the utility model provides a circuit breaker power supply mechanism, which can achieve power failure after the circuit breaker is opened regardless of how the wiring is done.

[0005] The technical solution of the utility model is as follows: a circuit breaker power supply mechanism comprises a shell, a contact seat arranged in the shell, a button and a torsion spring, a moving contact is arranged on the contact seat, the torsion spring comprises a first extension arm and a second extension arm, the first extension arm is located below the button, and also comprises an electromagnetic system and a spring sheet arranged in the shell, the spring sheet is located below the first extension arm, the electromagnetic system comprises a yoke, a static contact is arranged on the yoke, the moving contact is located between the spring sheet and the static contact, the second extension arm contacts with a circuit board, when closing the switch, the contact seat rotates to drive the moving contact to move, the moving contact contacts with the spring sheet and the static contact respectively, under the action of the button, the torsion spring, the first extension arm contacts with the spring sheet, the circuit is turned on, when opening the switch, the contact seat rotates to drive the moving contact to move, the moving contact is separated from the spring sheet and the static contact respectively, and the circuit is disconnected.

[0006] By adopting the above technical solution, after closing the circuit, the moving contact contacts the static contact and the spring sheet. At this time, the button is pressed into the housing, and the first extension arm of the torsion spring contacts the spring sheet after the button is pressed down, and the second extension arm contacts the circuit board. The circuit is turned on and power can be taken. After opening the circuit, the moving contact is disconnected from the static contact and the spring sheet and is not in contact. At this time, there will be no electricity when the button is pressed, thereby protecting the circuit breaker. No matter how the circuit breaker is connected, the circuit board will always have no electricity after the circuit breaker is disconnected, thereby improving the service life of the circuit board.

[0007] Further configuration of the utility model: a baffle is provided in the shell, a first slot is provided on the baffle, a second slot communicated with the first slot is provided on the shell, the spring sheet is inserted in the first slot and the second slot, an elastic clamping foot is provided on the spring sheet, a limiting groove is provided on the side of the baffle close to the shell, the limiting groove is located on one side of the first slot and communicated with the first slot, and the elastic clamping foot is clamped in the limiting groove.

[0008] By adopting the above further configuration, the spring sheet structure is stabilized, the shell limits the front and rear of the spring sheet, and the slot limits the upper and lower positions of the spring sheet, thereby preventing the spring sheet from detaching from the baffle.

[0009] The utility model is further configured as follows: a first placement groove and a second placement groove are provided on the contact seat, the first placement groove is communicated with the second placement groove, the moving contact is arranged in the first placement groove, a contact piece is provided in the second placement groove, the contact piece is directly or indirectly connected to the moving contact, the upper end of the contact piece extends outside the second placement groove, and contacts or separates from the spring piece under the drive of the contact seat.

[0010] With the above further arrangement, the contact piece is connected to the moving contact through a wire, and the two ends of the wire are respectively welded to the contact piece and the moving contact, which has good conductivity and is convenient for driving the contact piece to move when the moving contact moves. When the switch is closed, the moving contact contacts the yoke, and the contact piece contacts the spring piece, thereby achieving circuit conduction.

[0011] The utility model is further configured as follows: a connecting hook is integrally provided at the upper end of the contact piece, the connecting hook part extends out of the second placement groove, and the part of the connecting hook located outside the second placement groove is configured in an arc shape.

[0012] With the above further configuration, the connection hook makes the contact piece structure stable, and the contact portion with the spring piece is configured in an arc shape, so that no friction is generated between the arc portion and the spring piece, and the contact piece will not get stuck or deformed.

[0013] The present invention is further configured as follows: a blocking piece is provided on the outer side of the contact piece in the second placement groove, the blocking piece is provided with a groove, and a protrusion is provided on the inner side wall of the second placement groove, and the protrusion is clamped in the groove.

[0014] With the above further configuration, the baffle is configured to position the contact piece to prevent it from falling out of the second placement groove and affecting the contact with the spring piece. The matching of the protrusion and the groove has a simple structure and is easy to install.

[0015] The utility model is further configured that: the baffle is interference fit with the second placement groove, and a plurality of convex points are arranged on the two side walls of the baffle. When the baffle is installed in the second placement groove, each convex point cooperates with the inner side wall of the second placement groove.

[0016] By adopting the above-mentioned further configuration, the blocking piece has a firm structure and is not easy to fall off after installation, and the contact piece is further stabilized in structure so that it will not fall out of the second placement groove.

[0017] The utility model is further configured as follows: the outer shell includes a base, a partition and an upper cover which are separately arranged; the lower end of the baffle is pressed onto the base via the partition; the upper end of the baffle is provided with a plug; the upper cover is correspondingly provided with a plug, and the plug is inserted into the plug.

[0018] With the above further arrangement, the baffle structure is stable, and it is pressed onto the base through the partition and the connection with the upper cover. The stable baffle structure makes the structure of the spring sheet stable, and better contact between the spring sheet and the moving contact and the torsion spring is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the circuit breaker being disconnected;

[0020] Figure 2 This is a schematic diagram of the circuit breaker when the spring piece and the contact piece just come into contact during the closing process;

[0021] Figure 3 This is a schematic diagram of the circuit breaker after closing;

[0022] Figure 4 This is a schematic diagram of the circuit breaker tripping when the handle is locked;

[0023] Figure 5 is a schematic diagram of a spring sheet;

[0024] Figure 6 This is a schematic diagram of a spring sheet installed on a baffle;

[0025] Figure 7 is a schematic diagram of a limiting groove of a baffle;

[0026] Figure 8 is a schematic diagram of a first slot of a baffle;

[0027] Fig. 9 is a schematic diagram of the base;

[0028] Fig.10 It is a schematic diagram of the spring sheet and the partition plate being installed on the base;

[0029] Fig.11 is a schematic diagram of a moving contact and a contact piece;

[0030] Fig.12 is a schematic diagram of a contact seat;

[0031] Fig.13 It is a schematic diagram of the moving contact and the contact piece being installed on the contact seat;

[0032] Fig.14 is a schematic diagram of a baffle;

[0033] Fig.15 A schematic diagram of the baffle being installed in the second placement slot;

[0034] Fig.16 is a schematic diagram of a torsion spring and a circuit board;

[0035] Fig.17 is a schematic diagram of a circuit breaker;

[0036] Fig.18 A schematic diagram of the upper cover.

[0037] In the figure; 1, shell; 11, mounting axis; 12, second slot; 13, base; 14, partition; 15, upper cover; 151, plug column; 2, contact seat; 21, moving contact; 22, first placement slot; 23, second placement slot; 231, bump; 3, button; 4, torsion spring; 41, first extension arm; 42, second extension arm; 5, circuit board; 6, electromagnetic system; 61, magnet; 62, static contact; 7, spring sheet; 71, elastic foot; 8, baffle; 81, first slot; 82, limit slot; 83, jack; 9, contact sheet; 91, connecting hook; 10, wire; 100, baffle; 101, groove; 102, bump; 200, handle. DETAILED DESCRIPTION

[0038] The technical scheme in this embodiment will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] It should be noted that in the description of the present utility model, all directional indications (such as up, down, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. In the description of the present invention, the meaning of "several" is at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

[0041] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that technical personnel in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] like Figure 1-18 As shown, a circuit breaker power supply mechanism comprises a housing 1 and a contact seat 2, a button 3 and a torsion spring 4 arranged in the housing 1, a moving contact 21, and the contact seat 2 is driven by a handle 200. When the handle 200 is operated to open or close the switch, it can drive the contact seat 21 to rotate in an open position or a closed position. The torsion spring 4 comprises a first extension arm 41 and a second extension arm 42. A mounting shaft 11 is arranged on the housing 1, and the torsion spring 4 is sleeved on the mounting shaft 11. The button 3 is partially located outside the housing 1, and the first extension arm 41 is located below the button 3. It also comprises an electromagnetic system 6 and a spring sheet 7 arranged in the housing 1. The spring sheet 7 is located below the first extension arm 41. The electromagnetic system 6 comprises a yoke 61, and a static contact 62 is arranged on the yoke 61. The moving contact 21 is located between the spring sheet 7 and the yoke. The second extension arm 42 contacts with the circuit board. When the switch is closed, the contact seat 2 rotates to drive the moving contact 21 to move, and the moving contact 21 is respectively in contact with the spring sheet 7 and the static contact 62. When the switch is opened, the contact seat 2 rotates to drive the moving contact 21 to move, and the moving contact 21 is separated from the spring piece 7 and the static contact 62 respectively, and the circuit is disconnected. Specifically, the circuit board 2 is connected with a wire, and the second extension arm 42 is in contact with the wire. After closing the switch, the moving contact 21 is in contact with the static contact 62 and the spring piece 7, and the spring piece 7 itself is not charged. Because the moving contact 21 is in contact with the static contact 62 and the spring piece 7, the spring piece 7 is charged. At this time, the button 3 is pressed into the housing 1, and the first extension arm of the torsion spring 4 is in contact with the spring piece 7, and the second extension arm 42 is in contact with the wire, so that electricity can be taken. After opening the switch, the moving contact 21 is disconnected from the static contact 62 and the spring piece 7 and does not contact. At this time, the spring piece 7 is not charged, and there will be no electricity when the button 3 is pressed, thereby protecting the circuit breaker. No matter how the circuit breaker is connected, the circuit board will always be without electricity after the circuit breaker is disconnected, thereby improving the service life of the circuit board.

[0043] A baffle 8 is provided in the shell 1, and a first slot 81 is provided on the baffle 8. A second slot 12 communicating with the first slot 81 is provided on the shell 1. The spring sheet 7 is inserted in the first slot 81 and the second slot 12. An elastic foot 71 is provided on the spring sheet 7. A limiting groove 82 is provided on the side of the baffle 8 close to the shell 1. The limiting groove 82 is located on one side of the first slot 81 and is communicated with the first slot 81. The elastic foot 71 is clamped in the limiting groove 82, so that the structure of the spring sheet 7 is stable. The shell 1 limits the front and rear of the spring sheet 7, and the slot limits the upper and lower parts of the spring sheet 7 to prevent the spring sheet 7 from detaching from the baffle 8. The housing 1 includes a base 13, a partition 14 and an upper cover 15 which are separately arranged. The lower end of the baffle 8 is pressed onto the base 13 via the partition 14. The upper end of the baffle 8 is provided with a socket 83. The upper cover 15 is correspondingly provided with a plug 151, and the plug 151 is inserted into the socket 83. The baffle 8 has a stable structure and is pressed onto the base 13 through the partition 14 and the connection with the upper cover 15. The stable structure of the baffle 8 makes the structure of the spring sheet 7 stable, so that the contact between the spring sheet 7 and the moving contact 21 and the torsion spring 4 can be better achieved.

[0044] The contact seat 2 is provided with a first placement groove 22 and a second placement groove 23, the first placement groove 22 is communicated with the second placement groove 23, the moving contact 21 is arranged in the first placement groove 22, and the second placement groove 23 is provided with a contact piece 9, the contact piece 9 is directly or indirectly connected to the moving contact 21, the upper end of the contact piece 9 extends outside the second placement groove 23, and contacts or separates with the spring piece 7 under the drive of the contact seat 2, the contact piece 9 can be directly welded to the moving contact 21, and can also be connected to the moving contact 21 through a wire 10, and the two ends of the wire 10 are respectively welded to the contact piece 9 and the moving contact 21, so that the moving contact 21 is arranged integrally with the spring piece 7, so that when the moving contact 21 moves, the contact piece 9 is driven to move, and during the closing process, such as Figure 2 As shown, the contact piece 9 contacts the spring piece 7 first. At this time, the moving contact 21 has not yet contacted the static contact 62, and the circuit is not conducting. After the closing is completed, Figure 3 As shown, the contact piece 9 is in excessive contact with the spring piece 7, and the moving contact 21 is in contact with the static contact 62, so that the circuit is turned on, and the spring piece 7 is energized. A connecting hook 91 is integrally provided on the upper end of the contact piece 9, and a portion of the connecting hook 91 extends outside the second placement groove 23. The portion of the connecting hook 91 outside the second placement groove 23 is arranged in an arc shape. The arrangement of the connecting hook 91 makes the structure of the contact piece 9 stable, and the portion in contact with the spring piece 7 is arranged in an arc shape, so that no friction is generated between the arc portion and the spring piece 7, and the arc portion is rubbed by sliding, and will not be stuck or deformed.

[0045] A blocking piece 100 is provided on the outer side of the contact piece 9 in the second placement groove 23. A groove 101 is provided on the blocking piece 100. A convex block 231 is provided on the inner side wall of the second placement groove 23. The convex block 231 is clamped in the groove 101. The setting of the blocking piece 100 positions the contact piece 9 to prevent it from falling out of the second placement groove 23 and affecting the contact with the spring piece 7. The matching of the convex block 231 and the groove 101 is simple in structure and easy to install. The blocking piece 100 is interference fit with the second placement groove 23. A plurality of convex points 102 are provided on the two side walls of the blocking piece 100. When the blocking piece 100 is installed in the second placement groove 23, each convex point 102 matches with the inner side wall of the second placement groove 23, so that the blocking piece 100 has a firm structure and is not easy to fall off after installation, and further makes the structure of the contact piece 9 stable so that it will not fall out of the second placement groove 23.

Claims

1. A circuit breaker power supply mechanism, comprising a housing (1), a contact seat (2) located inside the housing, a button (3) and a torsion spring (4), wherein a moving contact (21) is provided on the contact seat (2), the button (3) is partially located outside the housing (1), the torsion spring (4) comprises a first extension arm (41) and a second extension arm (42), the first extension arm (41) is located below the button (3), and is characterized in that: The invention also comprises an electromagnetic system (6) and a spring sheet (7) arranged in the housing (1), wherein the spring sheet (7) is located below the first extension arm (41), the electromagnetic system (6) comprises a yoke (61), a static contact (62) is arranged on the yoke (61), the moving contact (21) is located between the spring sheet (7) and the static contact (62), the second extension arm (42) is connected to a circuit board (5) located in the housing (1), when the switch is closed, the contact seat (2) rotates to drive the moving contact (21) to move, and the moving contact (21) contacts the spring sheet (7) and the static contact (62) respectively, and the torsion spring (4) contacts the first extension arm (41) and the spring sheet (7) under the action of the button (3), and the circuit is turned on; when the switch is opened, the contact seat (2) rotates to drive the moving contact (21) to move, and the moving contact (21) separates from the spring sheet (7) and the static contact (62) respectively, and the circuit is turned off.

2. The circuit breaker power supply mechanism according to claim 1, characterized in that: A baffle (8) is provided inside the housing (1), a first slot (81) is provided on the baffle (8), a second slot (12) communicating with the first slot (81) is provided on the housing (1), the spring sheet (7) is inserted into the first slot (81) and the second slot (12), an elastic clamping foot (71) is provided on the spring sheet (7), a limiting groove (82) is provided on a side of the baffle (8) close to the housing (1), the limiting groove (82) is located on one side of the first slot (81) and communicates with the first slot (81), and the elastic clamping foot (71) is clamped in the limiting groove (82).

3. The circuit breaker power supply mechanism according to claim 1 or 2, characterized in that: The contact seat (2) is provided with a first placement groove (22) and a second placement groove (23), the first placement groove (22) is communicated with the second placement groove (23), the moving contact (21) is arranged in the first placement groove (22), the second placement groove (23) is provided with a contact piece (9), the contact piece (9) is directly or indirectly connected to the moving contact (21), the upper end of the contact piece (9) extends outside the second placement groove (23), and contacts or separates from the spring piece (7) under the drive of the contact seat (2).

4. The circuit breaker power supply mechanism according to claim 3, characterized in that: A connecting hook (91) is integrally provided at the upper end of the contact piece (9), and a portion of the connecting hook (91) extends outside the second placement groove (23). The portion of the connecting hook (91) located outside the second placement groove (23) is arranged in an arc shape.

5. The circuit breaker power supply mechanism according to claim 3, characterized in that: A blocking sheet (100) is provided in the second placement groove (23) on the outside of the contact sheet (9), a groove (101) is provided on the blocking sheet (100), and a protrusion (231) is provided on the inner side wall of the second placement groove (23), and the protrusion (231) is clamped in the groove (101).

6. The circuit breaker power supply mechanism according to claim 5, characterized in that: The baffle (100) is interference-fitted with the second placement groove (23); a plurality of protrusions (102) are provided on the two side walls of the baffle (100); when the baffle (100) is installed in the second placement groove (23), each protrusion (102) is matched with the inner side wall of the second placement groove (23).

7. The circuit breaker power supply mechanism according to claim 2, characterized in that: The housing (1) comprises a base (13), a partition (14) and an upper cover (15) which are separately arranged. The lower end of the baffle (8) is pressed onto the base (13) via the partition (14). The upper end of the baffle (8) is provided with an insertion hole (83). The upper cover (15) is correspondingly provided with an insertion column (151), and the insertion column (151) is inserted into the insertion hole (83).

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