Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
  • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
  • H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
  • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
  • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being unbalance of two or more currents or voltages
  • H01H83/226—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being unbalance of two or more currents or voltages with differential transformer
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
  • H01H71/02—Housings; Casings; Bases; Mountings
  • H01H71/0207—Mounting or assembling the different parts of the circuit breaker

Definitions

• This invention relates to circuit breakers and, more particularly, to a circuit breaker having an optimized spatial distribution that includes two poles with overcurrent protection and a leakage protection device in two module widths. Background technique
• Miniature circuit breakers are generally used in buildings such as homes, office buildings, hotels, and large shopping malls. They are used for single-phase and three-phase short-circuit, overload, over-voltage protection, etc. below 125A.
• the leakage protection circuit breaker is a switch that can automatically operate when the leakage current exceeds a predetermined value in the circuit. It is used to prevent personal electric shock. It can be assembled as a modular accessory on the outside of the circuit breaker.
• the present invention aims to propose an internal structure layout of a circuit breaker that optimizes the use space, and can accommodate a two-pole overcurrent protection pole and a leakage protection device in two module widths (36 mm wide).
• a circuit breaker for optimizing space allocation comprising: a first overcurrent protection pole, a second overcurrent protection pole and a leakage protection device.
• the first overcurrent protection pole has a first incoming end and a first outgoing end.
• the first overcurrent protection pole has a first contact connected in series, and the first overcurrent protection pole includes a first operating mechanism.
• the second overcurrent protection pole has a second incoming end and a second outgoing end, the second overcurrent protection pole has a second contact connected in series, and the second overcurrent protection pole includes a second operating mechanism.
• the leakage protection device comprises a transformer, an electromagnetic release and a leakage tripping mechanism, and the leakage protection device further comprises a test circuit with a test button, the test circuit is connected in series with the test resistor, and one end of the test circuit is connected in parallel on the first incoming end The other end of the test circuit is connected in parallel to the second outlet end.
• the transformer detects the leakage current, making the electromagnetic release In the action, the first operating mechanism and the second operating mechanism are tripped by the leakage tripping mechanism, so that the first contact and the second contact are disconnected to realize leakage protection.
• the leakage trip mechanism includes: a handle, a U-bar, a buckle, a link, a jumper, a reset lever, a trip lever, and a resilient reed.
• the handle is used as a leakage indication, and the rotation is fixed on the casing of the circuit breaker.
• One end of the U-shaped rod is connected to the handle, and the other end of the U-shaped rod is connected to the lock; the lock is rotatably connected to the connecting rod, and the connecting rod is rotatably connected to the a housing; a jumper is repeatedly stacked on the link; a reset lever is rotatably coupled to the housing; the resilient spring is coupled to the reset lever; and the trip lever is rotationally coupled to the housing.
• the handle has a spring
• the spring has two arms, one arm acts on the handle, the other arm acts on the housing, and the spring resets the handle.
• one end of the U-shaped rod is placed in the first hole of the handle, and the other end of the U-shaped rod is placed in the second hole of the buckle, and the third hole of the buckle is rotatably fixed on the connecting rod.
• the link is rotatably fixed to the housing, and the jumper is stacked on the link and rotated about the second axis on the link.
• the resilient reed is secured to the root of the reset lever.
• the width of the housing of the circuit breaker is two modules, and the first overcurrent protection pole, the second overcurrent protection pole, and the leakage protection device are disposed in the housing in the width direction of the housing.
• the leakage protection device is sandwiched between the first overcurrent protection electrode and the second overcurrent protection electrode.
• the circuit breaker includes an inverted T-shaped housing, the first overcurrent protection pole, the second overcurrent protection pole, and the leakage protection device are disposed in the housing, the housing having a first upper end surface, Two upper end faces, a third upper end face, a first side face, a second side face, a first lower end face, a third side face, and a fourth side face.
• the first overcurrent guard and the second overcurrent guard respectively occupy two-fifths of the space in the width direction of the housing, and the leakage protection device occupies one-fifth of the width of the housing.
• the first operating mechanism, the first outlet end and the first incoming segment are disposed on a front side within the housing, wherein the first operating mechanism is disposed on the first upper end surface, the third side surface, and the fourth side surface
• the first outlet end is disposed in a space defined by the first side surface, the second upper end surface, and the first lower end surface
• the first inlet end is disposed on the second side surface, the third upper end surface, and the first The space defined by the lower end surface
• the second operating mechanism, the second outlet end and the second incoming line are clothed a back side disposed in the housing, wherein the second operating mechanism is disposed in a space defined by the first upper end surface, the third side surface, and the fourth side surface, and the second outlet end is disposed on the first side surface, the second upper end surface, and In the space defined by the first lower end surface, the second inlet end is disposed in a space defined by the second side surface, the third upper end surface, and the first lower end surface.
• the first overcurrent protection electrode further includes a first arc extinguishing system disposed at an upper portion of the first outlet end and the first incoming end and above the first lower end surface;
• the second overcurrent protection pole further includes The second arc extinguishing system is disposed at an upper portion of the second outlet end and the second incoming end, and above the first lower end surface.
• the first arc extinguishing system, the second arc extinguishing system, and the transformer are located at the same height in the casing, and the first arc extinguishing system and the second arc extinguishing system each occupy a quarter of the width direction of the casing.
• the transformer occupies half of the space in the width direction of the casing; or the first arc extinguishing system, the second arc extinguishing system and the electromagnetic trip are located at the same height in the casing, the first arc extinguishing system, the second The arc extinguishing system each occupies a quarter of the space in the width direction of the circuit breaker, and the electromagnetic tripper occupies half of the space in the width direction of the circuit breaker.
• the first overcurrent protection pole is further connected in series with the first short circuit momentary protection device, and is disposed on a space defined by the upper surface of the first arc extinguishing system, the right side of the first outlet end, and the lower surface of the second upper end surface;
• the second overcurrent protection pole is further connected in series with the second short circuit momentary protection device, and is disposed on a space defined by the upper surface of the second arc extinguishing system, the left side of the second incoming end, and the lower side of the second upper end surface.
• the first short circuit instantaneous protection device and the second short circuit instantaneous protection device are located at the same height in the housing, and the first short circuit instantaneous protection device and the second short circuit instantaneous protection device each occupy the housing Half the space in the width direction.
• test resistor is disposed intermediate the first operating mechanism and the first short circuit momentary protection device adjacent the third side.
• the first overcurrent protection electrode further includes a first trip mechanism, and the contacts of the first trip mechanism are disposed on the first arc extinguishing system, the left side of the first incoming end, and the third a space defined by the lower end of the end surface;
• the second overcurrent protection pole further includes a second trip mechanism, the contacts of the second trip mechanism being disposed on the upper side of the second arc extinguishing system, the right side of the second outlet end, and the third The space defined by the lower side of the upper end face.
• the first trip mechanism, the second trip mechanism, and the leakage trip mechanism are in the housing
• the body is located at the same height, wherein the first trip mechanism and the second trip mechanism each occupy about two-fifths of the space in the width direction of the housing, and the leakage trip mechanism occupies one-fifth of the space in the width direction of the housing. .
• the first overcurrent protection pole is further connected in series with the first overload long delay protection device; and the second overcurrent protection pole is further connected in series with the second overload long delay protection device.
• the second upper end surface, the first side surface, and the first lower end surface form a first region, a third upper end surface, a second side surface, and a first lower end surface second region;
• the transformer is disposed on the first lower end surface The upper side of the first area;
• the electromagnetic release is disposed on the upper side of the first lower end surface, the right side of the transformer;
• the test button is disposed under the first upper end surface, adjacent to the position of the fourth side;
• the leakage tripping mechanism is disposed under the first upper end surface, above the first lower end surface, on the left side of the second region, the leakage indicating mechanism and the right side of the electromagnetic trip unit
• the earth leakage protection device further includes a leakage indicating mechanism; the leakage indicating mechanism is disposed under the first upper end surface at a position close to the third side.
• the circuit breaker with optimized space allocation of the invention integrates two overcurrent protection poles and leakage protection modules into the same circuit breaker product through rational optimization and space arrangement of the internal space of the circuit breaker, thereby achieving the effect of reducing the space volume.
• FIG. 1 discloses an electrical schematic diagram of a circuit breaker that optimizes space allocation in accordance with an embodiment of the present invention.
• FIGS. 2a and 2b illustrate a spatial distribution diagram of a circuit breaker that optimizes space allocation, in which Figure 2a reveals the front side of the circuit breaker and Figure 2b illustrates the back side of the circuit breaker, in accordance with an embodiment of the present invention.
• FIG. 3a, 3b and 3c disclose a spatial distribution diagram of a middle portion of a circuit breaker for optimizing space allocation according to an embodiment of the present invention, wherein Fig. 3b is a cross-sectional view taken along line AA of Fig. 3a, and Fig. 3c is a cross-sectional view taken along line BB of Fig. 3a .
• Figure 5 illustrates a front elevational view of a first overcurrent guard of a circuit breaker that optimizes space allocation, in accordance with an embodiment of the present invention.
• FIG. 6 discloses a front view of a second overcurrent guard of a circuit breaker that optimizes space allocation, in accordance with an embodiment of the present invention.
• Figure 7 illustrates a front elevational view of a leakage protection device for a circuit breaker that optimizes space distribution in accordance with an embodiment of the present invention, wherein the leakage trip mechanism is in a closed state.
• FIG. 8a, 8b and 8c disclose a structural view of a leakage tripping mechanism of a circuit breaker for optimizing space allocation according to an embodiment of the present invention, wherein the leakage tripping mechanism is in a tripping position, and Fig. 8b is the back of Fig. 8a View, Figure 8c is a side view of Figure 8b.
• FIG. 9a, 9b, and 9c are structural views of a leakage tripping mechanism of a circuit breaker for optimizing space allocation according to an embodiment of the present invention, wherein the leakage tripping mechanism is in a closing position, and FIG. 9b is the back of FIG. 9a view.
• Fig. 10 discloses a state in which the leakage trip mechanism of the circuit breaker for optimizing the space allocation is tripped in accordance with an embodiment of the present invention.
• the present invention is directed to a circuit breaker that optimizes space allocation, comprising: a first overcurrent protection pole, a second overcurrent protection pole, and a leakage protection device.
• the first overcurrent protection pole has a first incoming terminal and a first outgoing terminal.
• the first overcurrent protection pole has a first contact connected in series, and the first overcurrent protection pole includes a first operating mechanism.
• the second overcurrent protection pole has a second incoming end and a second outgoing end, the second overcurrent protection pole has a second contact connected in series, and the second overcurrent protection pole comprises a second operating mechanism.
• the leakage protection device comprises a transformer and an electromagnetic release, and the leakage protection device further comprises a test circuit with a test button, the test circuit is connected in series with the test resistor, one end of the test circuit is connected in parallel on the first incoming end, and the test circuit is further One end is connected in parallel to the second outlet end.
• the transformer detects the leakage current, sends a signal through the electromagnetic release device, and the first operating mechanism and the second operating mechanism are tripped by the leakage tripping mechanism, thereby disconnecting the first contact and the second contact, thereby realizing leakage protection .
• the circuit breaker with optimized space distribution provides a two-pole overcurrent guard and a leakage protection device in two modules of modular width.
• the arrangement of the different components and the design of the housing are very important.
• three main components are arranged in two modules of modulus (36 mm wide):
• the first part is a single contact overcurrent guard, the first overcurrent guard 6.
• the first overcurrent protection pole 6 includes a first handle, a first operating mechanism, a first short circuit instantaneous protection device, a first overload long time delay protection device, a first arc extinguishing system, a test resistor and two first terminals.
• the second part is also a single-contact overcurrent protection pole, that is, a second overcurrent protection pole 7, the second overcurrent protection pole 7 includes a second handle, a second operating mechanism, a second short circuit momentary protection device, and a second Overload long delay protection device, second arc extinguishing system and two second terminals.
• a second overcurrent protection pole 7 includes a second handle, a second operating mechanism, a second short circuit momentary protection device, and a second Overload long delay protection device, second arc extinguishing system and two second terminals.
• the remaining structure of the second overcurrent guard 7 is the same as the first overcurrent guard 6.
• the third part is the leakage protection device 8, and the leakage protection device 8 comprises a transformer, an electromagnetic trip, a leakage tripping mechanism, a leakage indicating mechanism and a test circuit.
• the leakage protection device 8 is sandwiched between two stages of overcurrent protection poles, that is, between the first overcurrent protection pole 6 and the second overcurrent protection pole 7.
• the internal space of each component is basically distributed in the following manner:
• the first overcurrent guard and the second overcurrent guard respectively occupy two-fifths of the space in the width direction of the casing, and the leakage protection device occupies one-fifth of the space in the width direction of the casing.
• the first trip mechanism, the second trip mechanism and the leakage trip mechanism are located at the same height in the housing, wherein the first trip mechanism and the second trip mechanism each occupy about two-fifths of the width direction of the housing Space, the leakage trip mechanism occupies one-fifth of the space in the width direction of the housing.
• the first short circuit instantaneous protection device and the second short circuit instantaneous protection device are located at the same height in the casing, and the first short circuit instantaneous protection device and the second short circuit instantaneous protection device each occupy half of the space in the width direction of the casing.
• the first arc extinguishing system, the second arc extinguishing system and the transformer are located at the same height in the casing, and the first arc extinguishing system and the second arc extinguishing system each occupy a quarter space in the width direction of the casing, mutual inductance
• the device occupies half of the space in the width direction of the housing.
• the first arc extinguishing system, the second arc extinguishing system and the electromagnetic tripping device are located at the same height in the casing, and the first arc extinguishing system and the second arc extinguishing system each occupy a quarter space in the width direction of the circuit breaker, and electromagnetic The trip unit occupies half of the space in the width direction of the circuit breaker.
• the circuit breaker includes two overcurrent protection poles, and the first overcurrent protection pole has a first contact 10, a first transient protection device 12, and a first overload long delay protection device 14 connected in series.
• the second overcurrent protection pole is connected in series with the second contact 1 1 , the second transient protection device 13 , and the second overload long delay protection device 15 .
• the transformer 62 of the leakage protection device 8 detects the leakage current, sends a signal through the electromagnetic release 18, and passes the first operating mechanism 16 and the first current protection electrode through the leakage trip mechanism 21.
• the leakage protection device 8 further includes a test circuit 22 in which a test button 20 and a test resistor 19 are connected in series (the test resistor 19 is a part of the first overcurrent guard 6), and one end of the test circuit 22 is connected in parallel to the first overcurrent protection electrode.
• the first incoming end 25 of 6 is connected in parallel with the second outgoing end 26 of the second overcurrent guard 7.
• FIGS. 2a and 2b illustrate a spatial distribution diagram of a circuit breaker that optimizes space allocation, in which Figure 2a reveals the front side of the circuit breaker and Figure 2b illustrates the back side of the circuit breaker, in accordance with an embodiment of the present invention.
• the housing of the circuit breaker has an inverted T-shape with a first upper end surface 101, a second upper end surface 102, a third upper end surface 103, a first side surface 104, a second side surface 105, and a first lower end surface 106.
• the third side 107 and the fourth side 108 is the housing of the circuit breaker.
• a first overcurrent protection pole 6 is placed on the front side of the circuit breaker (the front side of the housing), as shown in Fig. 2a.
• the first operating mechanism 16 of the first overcurrent guard 6 is disposed within a space defined by the first upper end surface 101, the third side 107, and the fourth side 108.
• the first outlet end 24 is disposed in a space defined by the first side surface 104, the second upper end surface 102, and the first lower end surface 106, and the first inlet end 25 is disposed on the second side surface 105, the third upper end surface 103, and The space defined by the first lower end surface 106.
• the first arc extinguishing system 30 is disposed intermediate the first outlet end 24 and the first incoming end 25, above the first lower end surface 106.
• the first short circuit momentary protection device 28 is disposed on the upper surface of the first arc extinguishing system 30, the right side of the first outlet end 24, and the lower surface of the second upper end surface 102. Limited location.
• the contacts in the first trip mechanism 29 are disposed at positions above the first arc extinguishing system 30, the left side of the first incoming end 25, and the lower side of the third upper end surface 103.
• the test resistor 19 is disposed intermediate the first operating mechanism 16 and the first short circuit instantaneous protection device 28 near the third side 107.
• a second overcurrent protection pole 7 is placed on the back of the circuit breaker (the back of the housing), as shown in Figure 2b.
• the second operating mechanism 35 of the second overcurrent guard 7 is disposed in a space defined by the first upper end surface 101, the third side 107, and the fourth side 108.
• the second outlet end 26 is disposed in a space defined by the first side 104, the second upper end surface 102, and the first lower end surface 106.
• the second incoming end 27 is disposed in a space defined by the second side 105, the third upper end surface 103, and the first lower end surface 106.
• the second arc extinguishing system 33 is disposed in the middle of the second outlet end 26 and the second inlet end 27, above the first lower end surface 106.
• the second short-circuiting moment protection device 34 is disposed at a position defined by the upper surface of the second arc extinguishing system 33, the left side of the second incoming end 27, and the lower surface of the second upper end surface 102.
• the contacts in the second trip mechanism 32 are disposed at positions above the second arc extinguishing system 33, the right side of the second outlet end 26, and the lower side of the third upper end surface 103.
• FIG. 3a, 3b and 3c disclose a spatial distribution diagram of a middle portion of a circuit breaker for optimizing space allocation according to an embodiment of the present invention, wherein Fig. 3b is a cross-sectional view taken along line AA of Fig. 3a, and Fig. 3c is a cross-sectional view taken along line BB of Fig. 3a .
• a front view and a cross-sectional view of the intermediate portion of the circuit breaker, i.e., the earth leakage protection device 8, are shown in FIG.
• Figure 3a is a front elevational view of the leakage protection device 8.
• the leakage indicating mechanism 41 is disposed under the first upper end surface 101 of the circuit breaker, near the third side 107; the test button mechanism 38 of the leakage protection device 8 is disposed under the first upper end surface 101 of the circuit breaker, close to the fourth
• the first region 36 formed by the second upper end surface 102, the first side surface 104 and the first lower end surface 106, and the second region 37 formed by the third upper end surface 103, the second side surface 105 and the first lower end surface 106 may be A rectifying component or circuit board 64 used to place the leakage transformer; the transformer 17 is placed on the upper side of the first lower end surface 106, on the right side of the first region 36; in the middle of the transformer 17 and the leakage indicating mechanism 41 a first short-circuiting protection device 28 of the first overcurrent protection pole 6 and a second short-circuiting transient protection device 34 of the second overcurrent protection pole 7; the electromagnetic trip unit 39 is placed on the first lower end surface 106, The right side of the transformer 17 is disposed on the
• 3a and 3b are cross-sectional views taken along lines A-A and B-B of Fig. 3, respectively, more clearly showing the spatial distribution of the three portions of the two-pole overcurrent protection device and the leakage protection device sandwiched therein.
• the first trip mechanism 29 of the first overcurrent guard 6, the second trip mechanism 32 of the second overcurrent guard 7, and the leakage trip mechanism 40 of the leakage protector 8 are located in the housing. The same height.
• the first trip mechanism 29 of the first overcurrent guard 6 and the second trip mechanism 32 of the second overcurrent guard 7 each occupy the width direction of the circuit breaker ( About two-fifths of the space in the width direction of the casing, the leakage trip mechanism 40 of the leakage protection device 8 occupies one-fifth of the space in the width direction of the circuit breaker.
• the first short circuit momentary protection device 28 of the first overcurrent protection electrode 6 and the second short circuit moment protection device 34 of the second overcurrent protection electrode 7 are located at the same height within the housing.
• the first short circuit momentary protection device 28 of the first overcurrent protection electrode 6 and the second short circuit moment protection device 34 of the second overcurrent protection electrode 7 each occupy an open circuit in the width of the casing, that is, the width division of the circuit breaker. Half of the space in the width direction.
• the first arc extinguishing system 30 of the first overcurrent protection pole 6, the second arc extinguishing system 33 of the second overcurrent protection pole 7, and the transformer 17 of the leakage protection device 8 are located at the same height within the housing.
• the width of the casing that is, the width division of the circuit breaker
• the first arc extinguishing system 30 of the first overcurrent protection pole 6 and the second arc extinguishing system 33 of the second overcurrent protection pole 7 each occupy the width direction of the casing.
• the quarter space of the leakage protection device 8 occupies half of the space in the width direction of the casing.
• the first trip mechanism 29 of the first overcurrent guard 6, the second trip mechanism 32 of the second overcurrent guard 7, and the leakage protection mechanism 40 of the leakage protector 8 are located in the same position in the housing. height.
• the first trip mechanism 29 of the first overcurrent guard 6 and the second trip mechanism 32 of the second overcurrent guard 7 each occupy the width direction of the circuit breaker.
• the leakage trip mechanism 40 of the leakage protection device 8 occupies one-fifth of the space in the width direction of the circuit breaker.
• the first arc extinguishing system 30 of the first overcurrent guard 6 , the second arc extinguishing system 33 of the second overcurrent guard 7 and the electromagnetic trip 39 of the leakage protection device 8 are located in the same position in the housing Height.
• the width of the casing that is, the width division of the circuit breaker
• the first arc extinguishing system 30 of the first overcurrent protection pole 6 and the second arc extinguishing system 33 of the second overcurrent protection pole 7 each occupy the width direction of the circuit breaker.
• the electromagnetic trip unit 39 of the leakage protection device 8 occupies half of the space in the width direction of the circuit breaker.
• the components in the first overcurrent protection pole 6 are included by the first outer casing 1 and the second outer casing 2
• the components in the second overcurrent protection pole 7 are included by the third outer casing 3 and the fourth outer casing 4, and leakage protection
• the components of the device 8 are contained by the second outer casing 2 and the third outer casing 3.
• Figure 5 illustrates a front elevational view of a first overcurrent guard 6 of a circuit breaker that optimizes space allocation, in accordance with an embodiment of the present invention.
• the first operating mechanism 16, the test resistor 19, the first outlet end 24, the first incoming end 25, the first short-circuiting protection device 28, the first tripping mechanism 29, and the first arc extinguishing system 30 are all specific.
• the coil 46 and the cord 44 of the first short circuit momentary protection device 28 are also shown in FIG.
• FIG. 6 discloses a front view of a second overcurrent guard 7 of a circuit breaker that optimizes space allocation, in accordance with an embodiment of the present invention.
• the second operating mechanism 35, the second outgoing end 26, the second incoming end 27, the second short-circuiting protection device 34, the second tripping mechanism 32, and the second arc extinguishing system 33 are all represented by specific components.
• Figure 6 replaces the schematic blocks in Figure 2b with specific components as compared to the spatial distribution map shown in Figure 2b. However, the space allocation and layout schemes of the two are consistent.
• the coil 47 and the cord 45 of the first short circuit momentary protection device 34 are also shown in FIG.
• the leakage trip mechanism 40 of the leakage protection device 8 has three states: an open state, a closed state, and a tripped state.
• 7 illustrates a front view of a leakage protection device for a circuit breaker that optimizes space allocation, wherein the leakage trip mechanism is in a closed state, in accordance with an embodiment of the present invention.
• 8a, 8b and 8c are in the open position
• Figure 8b is a rear view of Figure 8a
• Figure 8c is a side view of Figure 8b.
• the leakage trip mechanism of Figures 9a, 9b and 9c is in the closed position
• Figure 9b is the rear view of Figure 9a.
• the leakage trip mechanism is in the tripped state. More specifically, Fig.
• the leakage trip mechanism 40 includes a handle 50, a U-shaped rod 51, a buckle 52, a link 54, a jumper 56, a reset lever 61, a trip lever 59, and a resilient spring 60.
• the handle 50 in the leakage trip mechanism 40 can be used as a leakage indication, and is rotatably fixed to the first shaft 74 on the third outer casing 3.
• the spring 49 of the handle 50 is placed on the handle 50.
• the spring 49 has two arms and one arm. Acting on the handle 50, an arm acts on the outer casing 3 to function to reset the handle 50.
• the U-shaped rod 51 is placed in the first hole 71 in the handle 50, and the other end is placed in the second hole 72 of the buckle 52.
• Another hole in the latch 52, the third hole 73 is rotatably secured within the shaft on the link 54.
• the aperture 533 of the link 54 is rotatably secured to the seventh shaft 88 on the outer casing 3.
• the jumper 56 is stacked over the link 54 and is rotatable about a second shaft 78 on the link 54.
• the reset lever 61 is rotatably fixed to the third shaft 84 of the outer casing 3, and the elastic spring 60 is fixed to the position of the root portion 46 of the reset lever 61, and the trip lever 59 is rotatably fixed to the fourth shaft 85 of the outer casing 3.
• the torsion spring 70 is fixed to the seventh shaft 88, one arm of which acts on the outer casing 3, and the other arm acts on the eighth shaft 89 of the link 54, which generates a clockwise force to the link 54.
• the electromagnetic trip 63 is fixed to the fifth shaft 86 and the sixth shaft 87 on the outer casing 3.
• the spatial distribution between the components such as the buckle 52, the link 54, the jumper 56, the reset lever 61, the trip lever 59, and the like can be seen more clearly in Fig. 8c.
• the link 54 is coplanar with the reset lever 61
• the jumper 56 is coplanar with the trip lever 59.
• the lower portion 83 of the spring reed 60 has a larger area than the other positions of the reed, so that the width direction can be It is in contact with the trip lever 59.
• the latches are rotated, so that the movable link 54 rotates counterclockwise against the large torque of the torsion spring 70, and the striker 81 of the lower portion of the link 54 strikes the upper portion 80 of the reset lever 61, causing the reset lever 61 and the elastic spring 60 to rotate clockwise.
• the push rod 79 on the electromagnetic release 63 is pressed back to the initial position to complete the reset of the electromagnetic release 63; meanwhile, an arm 90 of the jumper 56 drives an arm 91 of the trip lever 59 to make the trip lever 59 Turn counterclockwise and reset.
• the leakage trip mechanism 40 When the above actions are completed, the leakage trip mechanism 40 is in the closing position, see Figures 9a-9c.
• the transformer 62 detects a leakage current, the transformer 62 sends an action signal to the electromagnetic release 63 to cause the push rod 79 on the electromagnetic release 63 to eject, thereby striking the lower end 83 of the elastic spring 60, and the striking force is reed.
• the trip lever 60 is transmitted to the raised portion 41 of the trip lever 59 in contact therewith, causing the trip lever 59 to rotate clockwise, the upper end 91 of the trip lever 59 hits the lower end 90 of the jumper 56, and the jumper 56 is counterclockwise
• the first trip surface (the upper trip surface) 75 is separated from the second trip surface 76 of the latch 52, and the leakage trip mechanism 40 completes the trip, and the trip unit 34 is tripped while the trip unit 40 is tripping.
• the bend 82 of the rod 54 strikes the ninth shaft 65, and the ninth shaft 65 is connected to the first overcurrent guard of the circuit breaker and the first operating mechanism of the second overcurrent protector and the trip lever of the second operating mechanism , thereby causing the circuit breaker to trip.
• test button 55 is located at the upper end surface 101 and the side surface 108.
• the torsion spring 57 is fixed to the shaft 58 on the outer casing 3, and an arm 68 thereof is electrically connected through the outer casing 3 to the second terminal (incoming end) 26 of the second overcurrent protection electrode 7.
• the test resistor 19 is fixed in the first overcurrent guard 6 (see FIG. 5), and a pin of the test resistor 19 passes through the outer casing 2, in the upper middle portion of the outer casing 3, the region 28 (the first short circuit instantaneous protection device 28) ) Fix it on the half-hole groove 66 between the handle 50 (leakage indicating handle) (see Figure 7).
• the other pin of the test resistor 19 is electrically connected to the coil 46 in the first short-circuit protection device 28 of the first overcurrent guard 6, and the coil 46 passes through the cord 44 from the transformer 62 (second
• the short circuit momentary protection device 34 and the coil 47 and the cord 45 are similar in structure, and are soldered to the first terminal (outlet end) 24 of the first overcurrent protection electrode 6.
• the other arm 67 of the torsion spring 57 forms a break at the 69 position with a pin of the test resistor 19.
• test button 55 When the test button 55 is pressed, the press post at the lower portion of the test button causes an arm 67 of the torsion spring 57 to be pressed to come into contact with the pin of the test resistor 19 placed in the half-hole groove 66, so that the test circuit 22 is made Turning on, a test leakage current is formed, so that the leakage trip mechanism trips 40, and the circuit breaker is disconnected.
• the compression spring 53 is tightly hung on the cylinder of the test button 55.
• the leakage mechanism When the leakage mechanism is in the closing state, the lower portion of the compression spring 53 is suspended; when the leakage mechanism is in the open state, the compression spring 53 is on the right side of the jumper 56.
• the platform 77 produces a small clockwise restoring force to the jumper 56.
• the leakage trip mechanism In Figure 10, the leakage trip mechanism is in a tripped state.
• the various components therein are similar to those described in Figures 8a-8c and Figures 9a-9c and will not be repeated here.
• the circuit breaker with optimized space allocation of the invention integrates the two-stage overcurrent protection pole and the leakage protection module into the same circuit breaker product through rational optimization and space arrangement of the internal space of the circuit breaker, thereby achieving the effect of reducing the space volume.

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• 2012
  • 2012-03-08 WO PCT/CN2012/072078 patent/WO2012119555A1/zh active Application Filing
  • 2012-03-08 EP EP12754514.3A patent/EP2685484B1/de active Active
  • 2012-03-08 AU AU2012225034A patent/AU2012225034B2/en active Active

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