CN210640165U

CN210640165U - Small-sized circuit breaker

Info

Publication number: CN210640165U
Application number: CN201921965533.8U
Authority: CN
Inventors: 刘豫
Original assignee: Gaoneng Gele Electric Co ltd
Current assignee: Gaoneng Gele Electric Co ltd
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2020-05-29
Anticipated expiration: 2029-11-14

Abstract

A miniature circuit breaker. The problem of current miniature circuit breaker instruct unreliable is solved. It includes casing and operating handle, the casing in be equipped with drive mechanism and indicator, operating handle be connected with drive mechanism through the connecting rod, the casing on be equipped with the observation hole, drive mechanism including jump knot, hasp and lever, the indicator on be equipped with instruction hole and instruction portion, the lever on be equipped with first display part and second display part, the indicator have through the first position that instruction portion sheltered from the observation hole and make the second position that the hole is general in observing the lever with the observation hole, the lever have when the indicator is in the second position make first display part locate the first state of observation hole below and indicator make the second state that the second display part is in observation hole below when being in the second position. The utility model discloses simple structure still has, convenient assembling, and the action is reliable, advantages such as long service life.

Description

Small-sized circuit breaker

Technical Field

The utility model relates to a low-voltage apparatus, concretely relates to miniature circuit breaker.

Background

The Miniature Circuit Breaker (English name: Miniature Circuit Breaker) is also called as micro Circuit Breaker (micro Circuit Breaker), and is generally suitable for overload and short Circuit protection of lines with alternating current 50/60Hz rated voltage of 230/400V and rated current of 63A, and can also be used for infrequent operation switching of the lines under normal conditions. The miniature circuit breaker is mainly used in various places such as industrial, commercial, high-rise and civil houses.

In each unit of the miniature circuit breaker, a contact system, an arc extinguishing system, an operating mechanism, a free tripping mechanism, an over-current protection system and a short-circuit protection system are included. The operating mechanism drives a moving contact in the contact system to move through the operating handle, so that the miniature circuit breaker is switched on and switched off, and the control on an electric circuit is realized; by sensing the current thermal effect and the magnetic effect, the protection is implemented when faults such as overload, short circuit and the like occur on an electric line.

The existing miniature circuit breaker can protect a system and other electric appliances through tripping when faults such as overload, short circuit and the like are realized, and the circuit breaker also has switching-on and switching-off operations in the normal operation process, namely, movable and static contacts are closed or separated by moving an operating handle. Therefore, even a circuit breaker with an indicating function on the market usually only indicates the current state (namely the closing or opening state) of the circuit breaker, and particularly, when the circuit breaker is in the opening state, the system maintenance is required because the circuit breaker cannot clearly know whether the circuit breaker can be directly powered on or tripped due to manual normal operation. The existing miniature circuit breaker with the fault indication function only has the fault indication function, but the switching-on and switching-off state during normal operation cannot be displayed, so that the existing miniature circuit breaker cannot reliably indicate the state of the existing circuit breaker through the indicating piece.

SUMMERY OF THE UTILITY MODEL

For solving current miniature circuit breaker and instructing insecure problem among the background art, the utility model provides a miniature circuit breaker.

The technical scheme of the utility model is that: the utility model provides a miniature circuit breaker, includes casing and operating handle, the casing in be equipped with drive mechanism and indicator, operating handle be connected with drive mechanism through the connecting rod, the casing on be equipped with the observation hole, drive mechanism including jump knot, hasp and lever, the indicator on be equipped with instruction hole and instruction portion, the lever on be equipped with first display part and second display part, the indicator have and shelter from the first position of observing the hole and make the second position that the hole is general in observing the lever with the observation hole through instruction portion, the lever have when the indicator is in the second position make first display part locate the first state of observation hole below and indicator be in the second state of observation hole below when the second position make second display part be in the second state of observation hole below.

As an improvement of the utility model, hasp, jump and detain and articulate respectively on the lever, operating handle be connected with jumping the knot through the connecting rod, the indicator have and detain the top through jumping when the operation disconnection and make the first state that the indicating part sheltered from the observation hole, drive through the lever when the operation is combined floodgate and make the indicating hole and observe that the hole is general in observing the lever on the second state of first display part and the trouble trip the third state that the hole is general in observing the lever on the second display part with observing the hole.

As a further improvement, the indicating member on be equipped with first stabilizer blade and second stabilizer blade, jump and detain and slide through the relative casing of first stabilizer blade drive indicating member, the lever slide through the relative casing of second stabilizer blade drive indicating member.

As a further improvement, the first stabilizer blade slant set up, jump and detain and be equipped with the arc drive division with first stabilizer blade looks adaptation, the vertical setting of second stabilizer blade, the lever on be equipped with the drive block of drive second stabilizer blade motion.

As a further improvement, the casing on be equipped with the backup pad, backup pad and casing mutually support and form the storage tank, the indicator locate the storage tank in and with the casing cooperation of sliding.

As a further improvement of the utility model, the casing include upper cover and base, upper cover and base on bulge joint portion respectively, the indicator on be equipped with the elasticity card foot with joint looks adaptation, the elasticity card foot including be used for with joint looks joint the card foot head with have elastic connecting portion.

As a further improvement of the utility model, the color of the indication part, the first display part and the second display part is different.

As a further improvement, the lever on be equipped with the connecting piece, the hasp on be equipped with the jack, the connecting piece on be equipped with the inserted block and be used for the linkage groove that links mutually with different circuit breakers, the inserted block insert in the jack of hasp and make the connecting piece be connected with the hasp linkage.

As a further improvement, the casing in be equipped with the piece that resets, the one end and the shells inner wall that reset offset, the other end offsets with the lever.

As a further improvement, the lever is arranged on the contact support, the contact support is provided with a moving contact, and the contact support is driven to rotate by the operating handle or the reset piece.

The beneficial effects of the utility model are that, realize through the cooperation of indicator and lever that the operation separating brake of realization circuit breaker instructs, operation combined floodgate instructs and fault indication, promptly the utility model discloses can normally instruct the position of circuit breaker, also can remind behind the fault separating brake, avoid staff's maloperation. The utility model discloses simple structure still has, convenient assembling, and the action is reliable, advantages such as long service life.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is an explosion structure diagram of the embodiment of the present invention when opening the brake.

Fig. 3 is a schematic diagram of an exploded structure within the housing of fig. 2.

Fig. 4 is the utility model discloses explosion structure schematic diagram when operation combined floodgate.

Fig. 5 is a schematic view of an exploded structure within the housing of fig. 4.

Fig. 6 is a schematic view of the exploded structure in the other direction of fig. 5.

Fig. 7 is a schematic diagram of an exploded structure of the transmission mechanism of fig. 6.

Fig. 8 is an explosion structure diagram of the embodiment of the present invention when a fault is tripped.

Fig. 9 is a schematic view of the housing of fig. 8.

Fig. 10 is a schematic structural view of the upper cover in fig. 8.

Fig. 11 is a schematic view of the structure of the indicator of fig. 9.

In the figure, 1, a housing; 11. an observation hole; 12. a support plate; 13. a containing groove; 14. an upper cover; 15. a base; 16. a clamping part; 2. an operating handle; 3. a transmission mechanism; 31. jumping and buckling; 311. an arc-shaped driving part; 32. locking; 321. a jack; 33. a lever; 331. a first display unit; 332. a second display unit; 333. a drive block; 34. a contact holder; 4. an indicator; 41. an indicator hole; 42. an indicating section; 43. a first leg; 44. a second leg; 45. an elastic clamping pin; 451. a clamping pin head part; 452. a connecting portion; 5. a connecting rod; 6. a connecting member; 61. inserting a block; 62. a linkage groove; 7. a reset member; 8. moving contact.

Detailed Description

The embodiments of the present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1 and fig. 2-11, a miniature circuit breaker includes a housing 1 and an operating handle 2, the housing 1 is provided with a transmission mechanism 3 and an indicator 4, the operating handle 2 is connected with the transmission mechanism 3 through a connecting rod 5, the housing 1 is provided with an observation hole 11, the transmission mechanism 3 includes a jump buckle 31, a lock catch 32 and a lever 33, the indicator 4 is provided with an indication hole 41 and an indication part 42, the lever 33 is provided with a first display part 331 and a second display part 332, the indicator 4 has a first position (a manual opening state) for shielding the observation hole 11 through the indication part 42 and a second position for communicating the indication hole 41 with the observation hole 11 and observing the lever 33, and the lever 33 has a first state (a manual closing state) for enabling the first display part 331 to be arranged below the observation hole 11 when the indicator 4 is at the second position and enables the second display part 332 to be in an observation state when the indicator 4 is at the first position (a manual closing state) and the indicator 4 is at the second position A second condition (fault trip display) is observed below the hole 11. The beneficial effects of the utility model are that, realize through the cooperation of indicator and lever that the operation separating brake of realization circuit breaker instructs, operation combined floodgate instructs and fault indication, promptly the utility model discloses can normally instruct the position of circuit breaker, also can remind behind the fault separating brake, avoid staff's maloperation. The utility model discloses simple structure still has, convenient assembling, and the action is reliable, advantages such as long service life. Specifically, when the indicating piece is in the first position, namely the circuit breaker is in an operation opening state, when the circuit breaker is operated to close, the indicating piece is in the second position, an observer can observe the first display part of the lever through the indicating hole of the indicating piece directly from the observation hole, when a fault occurs, the lever acts but the indicating piece is still in the second position, namely the observation hole directly penetrates through the indicating hole of the indicating piece to observe the lever, but the indicating piece is still after the lever rotates, and the second display part on the lever is observed at the moment. More specifically, the size of the indicator hole is larger than the size of the sight hole. Such structure can show the different states of circuit breaker for the user can judge the state of circuit breaker according to the instruction of casing fast, not only possesses the function of normally instructing circuit breaker divide-shut brake state promptly, can instruct the difference of circuit breaker fault tripping and separating brake state moreover, and the user of being convenient for overhauls and operates. The beneficial effects of the utility model are that, realize through the cooperation of indicator and lever that the operation separating brake of realization circuit breaker instructs, operation combined floodgate instructs and fault indication, promptly the utility model discloses can normally instruct the position of circuit breaker, also can remind behind the fault separating brake, avoid staff's maloperation. The utility model discloses simple structure still has, convenient assembling, and the action is reliable, advantages such as long service life.

The lock catch 32 and the trip buckle 31 are respectively hinged on the lever 33, the operating handle 2 is connected with the trip buckle 31 through the connecting rod 5, the indicating piece 4 has a first state that the indicating part 42 shields the observation hole 11 through pushing the trip buckle 31 when the operation is disconnected, a second state that the indicating hole 41 is communicated with the observation hole 11 through driving of the lever 33 when the operation is switched on and is used for observing the first display part 331 on the lever 33, and a third state that the indicating hole 41 is communicated with the observation hole 11 and is used for observing the second display part 332 on the lever 33 without action when the fault is tripped. Specifically, when the circuit breaker is opened (usually, the moving contact and the fixed contact of the circuit breaker are disconnected through the operating handle), the contact support moves towards the left side under the action of the reset member (the reset spring), the trip push power indicator on the lever moves (see fig. 2), and the color of the indicator indicating part is observed in the observation hole after the circuit breaker is opened, and is green. When the breaker is switched on, the operating handle rotates the jump buckle through the U-shaped connecting rod, the jump buckle is locked with the lock buckle, the lever is pushed to rotate around the shaft to be closed with the fixed contact, the indicating piece is pushed to move towards the right side while the lever rotates, after the breaker is closed, the indicating hole of the indicating piece is arranged below the observation hole, the color of the first display part of the lever can be directly seen through the observation hole at the moment, and the observed color is red. When a short circuit or overload fault occurs in a line, a tripping mechanism (such as a bimetallic strip, a tripping coil or linkage tripping of other circuit breakers) pushes the lock catch to rotate anticlockwise around the positioning column on the lever (see the attached drawing 8), so that the trip catch and the lock catch are unlocked, and then the lever and the contact support return to the original disconnected state under the action of the reset piece. Because the hasp to jumping the consistent influence of detaining, jump detain and also rotate anticlockwise around the reference column on the lever at the beginning of the disconnection thereupon, drive to jump through the U-shaped connecting rod when the handle resets and detain clockwise rotation and get back to the off-state, the hasp resets simultaneously, and the earlier anticlockwise rotation of jumping detaining is driven clockwise rotation again this moment, just in time misplaces and crosses from the first leg department of indicator, can not drive indicator horizontal motion like when manual operation separating brake. Because the indicator is still kept right and still immovable without being pushed by the jump button, the lever can still be observed through the observation hole of the indicator from the observation hole, and the lever is a second display part below the observation hole and can be displayed in yellow at the moment, so that yellow alarm for indicating the fault disconnection of the circuit breaker is realized. Namely the utility model discloses a demonstration of three kinds of states of circuit breaker that indicator and lever's cooperation had realized, product simple structure, convenient assembling, the action is reliable, and the instruction is reliable.

The indicating piece 4 is provided with a first supporting leg 43 and a second supporting leg 44, the jump buckle 31 drives the indicating piece 4 to slide relative to the shell 1 through the first supporting leg 43, and the lever 33 drives the indicating piece 4 to slide relative to the shell 1 through the second supporting leg 44. Specifically, the first supporting leg 43 is obliquely arranged, the jump buckle 31 is provided with an arc-shaped driving portion 311 matched with the first supporting leg 43, the second supporting leg 44 is vertically arranged, and the lever 33 is provided with a driving block 333 for driving the second supporting leg 44 to move. The structure can reliably drive the indicating piece to act through the jump buckle and the lever, so that the product acts reliably and clearly indicates different breaker states. And the first support leg that the slant set up is convenient for jump the promotion of detaining, reserves the rotation space for jumping the knot when the trouble is tripped simultaneously to make the product can reliably instruct the different states of circuit breaker.

The shell 1 is provided with a supporting plate 12, the supporting plate 12 and the shell 1 are mutually matched to form a containing groove 13, and the indicating piece 4 is arranged in the containing groove 13 and is in sliding fit with the shell 1. Specifically, casing 1 include upper cover 14 and base 15, upper cover 14 and base 15 on bulge joint portion 16 respectively, indicator 4 on be equipped with the elasticity card foot 45 with joint portion 16 looks adaptation, elasticity card foot 45 including be used for with the card foot head 451 of joint portion 16 looks joint with have elastic connecting portion 452. Concretely speaking, the indicator is horizontal motion in the storage tank, and the motion is steady, and can show the state of circuit breaker when cooperating with the lever, simple structure is reliable. The elastic clamping foot and the clamping portion are arranged to remind the breaker to move in place at any time, damage to parts due to over-movement is avoided, and meanwhile certain pre-pressure is provided for the contact support through the jump buckle lock catch.

The color of the indication part 42, the first display part 331 and the second display part 332 is different. Specifically speaking, the utility model discloses an instruction portion is green, and first display part is red, and second display part is yellow. Of course, in the actual production and use process, the uncommitted color of the present invention can be used for indicating (blue, vermicelli, black, gray, etc.), and of course, the present invention can also display the difference by using numbers, roman numerals, patterns, etc. in the middle indication part, the first display part and the second display part. Of course, these features may be combined to indicate, and of course, the indication portion may be indicated by color, the first display portion by numeral, and the second display portion by pattern.

The lever 33 on be equipped with connecting piece 6, hasp 32 on be equipped with jack 321, connecting piece 6 on be equipped with inserted block 61 and be used for the linkage groove 62 with different circuit breakers looks linkage, inserted block 61 insert in the jack 321 of hasp 32 and make connecting piece 6 be connected with hasp 32 linkage. The structure ensures that when different miniature circuit breakers are used in a matched mode, the miniature circuit breakers can be switched off simultaneously, and indication can be carried out.

The shell 1 in be equipped with the piece 7 that resets, the one end of piece 7 that resets support with the shell 1 inner wall, the other end supports with lever 33. Specifically, the lever 33 is arranged on the contact support 34, the movable contact 8 is arranged on the contact support 34, and the contact support 34 is driven to rotate by the operating handle 2 or the reset piece 7. The structure ensures that the lever, the jump buckle and the lock catch contact support reset reliably.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The skilled person should understand that: although the present invention has been described in accordance with the above embodiments, the inventive concept is not limited to this embodiment, and any modification of the inventive concept will be included in the scope of the patent claims.

Claims

1. A miniature circuit breaker comprises a shell (1) and an operating handle (2), and is characterized in that a transmission mechanism (3) and an indicating piece (4) are arranged in the shell (1), the operating handle (2) is connected with the transmission mechanism (3) through a connecting rod (5), an observation hole (11) is formed in the shell (1), the transmission mechanism (3) comprises a jump buckle (31), a lock buckle (32) and a lever (33), the indicating piece (4) is provided with an indicating hole (41) and an indicating part (42), the lever (33) is provided with a first display part (331) and a second display part (332), the indicating piece (4) is provided with a first position for shielding the observation hole (11) through the indicating part (42) and a second position for communicating the indicating hole (41) with the observation hole (11) and observing the lever (33), and the lever (33) is provided with the first display part (331) when the indicating piece (4) is located at the second position A first state provided below the observation hole (11) and a second state in which the second display section (332) is positioned below the observation hole (11) when the indicator (4) is positioned at the second position.

2. The miniature circuit breaker according to claim 1, wherein said latch (32) and said trip latch (31) are respectively hinged to a lever (33), said operating handle (2) is connected to the trip latch (31) through a connecting rod (5), said indicating member (4) has a first state in which said indicating portion (42) blocks said viewing aperture (11) by pushing said trip latch (31) when said operation is off, a second state in which said indicating portion (41) is communicated with said viewing aperture (11) by said lever (33) when said operation is on, and a third state in which said indicating portion (332) is communicated with said viewing aperture (11) when said fault is tripped.

3. The miniature circuit breaker as claimed in claim 2, wherein said indicating member (4) has a first leg (43) and a second leg (44), said jumper (31) drives said indicating member (4) to slide relative to said housing (1) via said first leg (43), and said lever (33) drives said indicating member (4) to slide relative to said housing (1) via said second leg (44).

4. The miniature circuit breaker according to claim 3, wherein said first leg (43) is disposed obliquely, said jumper (31) is provided with an arc driving portion (311) adapted to said first leg (43), said second leg (44) is disposed vertically, and said lever (33) is provided with a driving block (333) for driving said second leg (44) to move.

5. The miniature circuit breaker according to claim 1, wherein said housing (1) is provided with a support plate (12), said support plate (12) and said housing (1) are engaged with each other to form a receiving groove (13), said indicating member (4) is disposed in said receiving groove (13) and slidably engaged with said housing (1).

6. The miniature circuit breaker according to claim 5, wherein said housing (1) comprises an upper cover (14) and a base (15), said upper cover (14) and said base (15) are respectively provided with a clamping portion (16), said indicating member (4) is provided with an elastic clamping leg (45) adapted to said clamping portion (16), said elastic clamping leg (45) comprises a clamping leg head (451) for clamping said clamping portion (16) and a connecting portion (452) having elasticity.

7. The miniature circuit breaker according to claim 1, wherein said indication portion (42), said first display portion (331) and said second display portion (332) are all provided in different colors.

8. The miniature circuit breaker according to claim 1, wherein said lever (33) is provided with a connecting member (6), said latch (32) is provided with a socket (321), said connecting member (6) is provided with an insert (61) and a linking groove (62) for linking with different circuit breakers, said insert (61) is inserted into said socket (321) of said latch (32) and makes said connecting member (6) and said latch (32) linked.

9. The miniature circuit breaker according to claim 1, wherein said housing (1) is provided with a reset member (7), one end of said reset member (7) abuts against an inner wall of said housing (1), and the other end abuts against said lever (33).

10. The miniature circuit breaker according to claim 9, wherein said lever (33) is disposed on a contact support (34), said contact support (34) having a movable contact (8), said contact support (34) being rotated by said operating handle (2) or said reset member (7).