Bimetallic unit for automatic circuit breaker. RU patent 2504039.
 Electromechanical switch / 2461108Electromechanical switch contains a gear reducer, a power wafer or cam switch with varied phasicity, a coupling sleeve (by means whereof the gear reducer is connected to the wafer switch), a control unit with a microcontroller, the gear reducer on/off key, the switching direction selection key, a terminal block for supply of low current control signals and a stabiliser. The control unit is based on a printed board; the charging device is connected in parallel to the accumulator, the stabiliser and the second key via the power supply buses; the power inputs are connected to the inputs of the wafer switch sets of contacts via electric wires; while in the operating position, the inlets of the switch wafer sets are connected to the terminal block and the charging device via wires. One of the utmost wafers of the wafer switch represents the switch current position sensor; for this purpose the said utmost wafer is connected to the control unit via wires. |
 Current-limiting automatic circuit breaker / 2345435Invention relates to electrical engineering and particularly to low-voltage instrument-making industry. The main and additional rotary bridges are installed in the circuit breaker inside the rotary drum groove on the axis of the main bridge. It is installed so that it can make reciprocal movements along the axis under electro-dynamic attracting force. The circuit breaker is provided with compact fast-acting mechanisms to disconnect pressure springs, which are actuated when contacts are opened under electro-dynamic force due to moving bridges. Each mechanism is installed as a unit in a drum pocket consisting of a running cup, support roller provided with stop flat, insertions and retainer pin. The stop flat contacts with bridge shoulder. There is a pressure spring between the above insertions. In addition the circuit breaker is ensured with limiting pins. Compensating openings are made in each shoulder of rotary bridges opposite to each other. The limiting pins are inserted into compensating openings of the rotary bridges and linked with the above openings by retraction springs hooks. The other hooks are fixed to retainer pins. |
 High-speed operating mechanism of switching device / 2264673Proposed high-speed operating mechanism has ON-operation mechanism, capacitor, charging device, OFF-operation mechanism coil, controlled switch, diode, and load current sensor. In order to speed up disconnection of short-circuited load, additional circuit set up of second and third capacitors, first and second resistors, as well as pulsed master oscillator, load voltage sensor, and three amplifier-rectifier units are connected in parallel with controlled switch control circuit fed from current sensor; second amplifier-rectifier unit is supplied with power from load voltage sensor and generates cut-off voltage for controlled switch under steady state conditions. Upon occurrence of short circuit across load second amplifier-rectifier unit stops generating cut-off voltage for controlled switch, the latter starts passing current, and OFF-operation mechanism operates. |
 High-speed electromagnetic operating mechanism of switching device / 2262764Proposed operating mechanism has electromagnet coil shorted out by backward diode, transistor, and control unit; newly introduced in operating mechanism is transformer whose primary winding is connected in series with transistor; the latter is controlled by control unit; dc current of operating mechanism electromagnet coil is produced by secondary winding of mentioned transformer; transistor failure causes transformer saturation and disconnection of device while off-operation failure in this case is impossible. |
| High-speed electromagnetic operating mechanism of switching device / 2262764 Proposed operating mechanism has electromagnet coil shorted out by backward diode, transistor, and control unit; newly introduced in operating mechanism is transformer whose primary winding is connected in series with transistor; the latter is controlled by control unit; dc current of operating mechanism electromagnet coil is produced by secondary winding of mentioned transformer; transistor failure causes transformer saturation and disconnection of device while off-operation failure in this case is impossible. |
| High-speed operating mechanism of switching device / 2264673 Proposed high-speed operating mechanism has ON-operation mechanism, capacitor, charging device, OFF-operation mechanism coil, controlled switch, diode, and load current sensor. In order to speed up disconnection of short-circuited load, additional circuit set up of second and third capacitors, first and second resistors, as well as pulsed master oscillator, load voltage sensor, and three amplifier-rectifier units are connected in parallel with controlled switch control circuit fed from current sensor; second amplifier-rectifier unit is supplied with power from load voltage sensor and generates cut-off voltage for controlled switch under steady state conditions. Upon occurrence of short circuit across load second amplifier-rectifier unit stops generating cut-off voltage for controlled switch, the latter starts passing current, and OFF-operation mechanism operates. |
| Current-limiting automatic circuit breaker / 2345435 Invention relates to electrical engineering and particularly to low-voltage instrument-making industry. The main and additional rotary bridges are installed in the circuit breaker inside the rotary drum groove on the axis of the main bridge. It is installed so that it can make reciprocal movements along the axis under electro-dynamic attracting force. The circuit breaker is provided with compact fast-acting mechanisms to disconnect pressure springs, which are actuated when contacts are opened under electro-dynamic force due to moving bridges. Each mechanism is installed as a unit in a drum pocket consisting of a running cup, support roller provided with stop flat, insertions and retainer pin. The stop flat contacts with bridge shoulder. There is a pressure spring between the above insertions. In addition the circuit breaker is ensured with limiting pins. Compensating openings are made in each shoulder of rotary bridges opposite to each other. The limiting pins are inserted into compensating openings of the rotary bridges and linked with the above openings by retraction springs hooks. The other hooks are fixed to retainer pins. |
| Electromechanical switch / 2461108 Electromechanical switch contains a gear reducer, a power wafer or cam switch with varied phasicity, a coupling sleeve (by means whereof the gear reducer is connected to the wafer switch), a control unit with a microcontroller, the gear reducer on/off key, the switching direction selection key, a terminal block for supply of low current control signals and a stabiliser. The control unit is based on a printed board; the charging device is connected in parallel to the accumulator, the stabiliser and the second key via the power supply buses; the power inputs are connected to the inputs of the wafer switch sets of contacts via electric wires; while in the operating position, the inlets of the switch wafer sets are connected to the terminal block and the charging device via wires. One of the utmost wafers of the wafer switch represents the switch current position sensor; for this purpose the said utmost wafer is connected to the control unit via wires. |
 Bimetallic unit for automatic circuit breaker / 2504039Bimetallic unit comprises the following: a heater, connected with a mobile contact, to which energy is supplied; and a bimetallic element having one end section communicating with the heater and arranged to be located at the distance from the heater. The heater comprises the following: a communicating section, communicating with the bimetallic element; a separated section distanced from the bimetallic element to a certain distance; and a connecting section that connects the communicating section and the separated section. There is at least one ledge that stretches from the separated section in direction to the bimetallic element. |
 Relay of control system of gearbox switching / 2509940System includes a gearbox circuit with an actuating mechanism, a control switch of electric current flow via the gearbox circuit, a control circuit, and a control element. The actuating mechanism actuates an electromagnetic valve. The control circuit allows actuation of the switch. The control element has the possibility of performing alternating actuation of the gearbox circuit and the control circuit. The method consists in the fact that the control element is activated. At activation of the control element alternating actuation of the gearbox circuit and the control circuit is performed to control electric current flow in the gearbox circuit. |
FIELD: electricity.
SUBSTANCE: bimetallic unit comprises the following: a heater, connected with a mobile contact, to which energy is supplied; and a bimetallic element having one end section communicating with the heater and arranged to be located at the distance from the heater. The heater comprises the following: a communicating section, communicating with the bimetallic element; a separated section distanced from the bimetallic element to a certain distance; and a connecting section that connects the communicating section and the separated section. There is at least one ledge that stretches from the separated section in direction to the bimetallic element.
EFFECT: increased reliability and service life of a device.
6 cl, 2 dwg
The technical field
The present invention relates to bimetal site for circuit breaker, more precisely, to bimetal node initiating the operation off when in automatic switch occurs short-circuit current.
Description of the prior art
Automatic switch, which has a built-in dip switch, squeeze the release mechanism and the like, inside a container made from a material with properties may break or snap line outlet in electrically United state of manual or electrical manipulation and remove the power for protection of the transaction in case of an error, such as overload, short circuit, and the like.
In General, the circuit breaker refers to the automatic molded case circuit breaker (MCCB), used for protection of power lines low pressure AC 600 V or below or DC 250 V or lower. The circuit breaker is made so that it was compact, it was easy to manage, and it does not create a user inconvenience of care, such as replacing the fuse or the like, so it is usually used instead of the traditional switch and fuse.
devices include device bimetal type, in which the bimetallic element heats the current flowing through the circuit breaker, to bend for operations tripping, device (e.g. electromagnetic type, where the current is applied to the coil equipped in the breaker, and in this case, when there is an overload, core drawn electromagnetic field formed around the coil, to interrupt or cut-off current (or implementation of the operation tripping), and electronic device type with a microprocessor.
Among them, device bimetallic type shall perform the trip with the help of bimetallic center including heater and bimetallic element, wrought heat produced by the heater. Figure 1 shows an example of the circuit breaker, which uses such a bimetal site. With reference to Figure 1, the automatic switch includes device 200 installed inside the main building of 110 and in case of overload or short-circuit dip switch 130, which includes many links to connect the drive (or the engine 150) with the stator (not shown) source of energy or to detach (or separation) it from the stator and the device 140 alarm, interacts with on-off switch 130 to display the presence or absence of case of an overload or short circuit.
Dip switch 130 includes the handle 131, with the possibility of rotation is supported by the main building of 110, dog 132 connected with the handle 131 and in accordance with the rotation of the arm 131 to move actuator 150, holder 133 dogs, connected with the dog 132 and restricting the work of dogs 132, leading stud 134 connected with the holder 133 dogs and moving in accordance with the movement of the holder 133 dogs, and cross strut 135, restraining the holder 133 dogs.
device 200, situated on one side of the transverse trims 135, includes heater 210 connected with the side of a source of energy (for example, with the stator (not shown) or wheel 150) of the circuit breaker for the reception of energy and bimetallic element 230.
Bimetallic element 230, in contact with the lower limit plot heater 210, is attached to the lower terminal site of the heater 210 of the fastening bolts and flexes when the breaker, there is an overload or short circuit. When the bimetallic element 210 bent, contact plot 232 formed on his end pushes cross strut 135 for disconnection of the dip switch 130.
Thus, since heater 210 and bimetallic element 230 removed from each other, as shown, due to the tolerances in the process of Assembly for the Assembly of bimetal site or in the case of long-term use, bimetallic element 230 deformed, or the like, which causes problems when the distance between the bimetallic element and heater 230 210 becomes uneven. In particular, in the breaker with many phases, the distance between the bimetallic element and each pole of the heterogeneous characteristics of the gap circuit breaker become inhomogeneous.
Short description of the invention
The object of the present invention provides a bimetallic Assembly, capable to maintain the distance between the bimetallic Assembly and heater.
In accordance with the object of the present invention, provided bimetal site, including: the heater connected with movable contact, which is supplied with electricity; bimetallic element with one tail section, communicating with heater and situated so, to be removed from the heater at a certain distance, the heater includes: adjoining plot of communicating with bimetallic element; separated plot, remote at a certain distance from the bimetallic element; and connecting plot tells the adjoining plot and separated plot, equipped with at least one projection, the speaker separated from the plot towards the bimetal element.
In accordance with another object of the present invention, provided bimetal site, including: the heater connected with movable contact, which is served energy; and bimetallic element with one tail section, communicating with heater and located at some distance from the heater, the heater includes: adjoining plot of communicating with the bimetallic element; separated plot, remote at a certain distance from the bimetallic element; and connecting plot connecting the adjoining plot is separated with a plot, with established at least one projection, extending from the site of the bimetallic element, turned to a separate section, towards the outside area.
In accordance with the embodiments of the present invention, because the tabs stretch from any of the bimetallic element or heater, the distance between the bimetallic element and a heater can be maintained at the minimum level or be more.
Here, a lot of tabs may be located in the direction of the length of separated plot or bimetallic element, and leaf plots projections can be removed from the bimetallic element or separated plot.
Thus, since the distance between the bimetallic element and the heater is maintained at the minimum level or more, despite the erroneous Assembly tolerances when you build or long-term use, reliability and service life of the device can be improved.
These and other tasks, signs, objects and advantages of the present invention will become more clear from the following detailed description of the invention together with the attached drawings.
Brief description of drawings
Figure 1 depicts a type that shows an example of the circuit breaker, which is normal bimetal site in accordance with prior art.
Figure 2 depicts a type, the equivalent Figure 1, showing the circuit breaker, which is used bimetal site in accordance with the embodiment of the present invention.
Detailed description of the invention
Circuit breaker in accordance with the embodiment of the present invention will be described with reference to the accompanying drawings.
Here, bimetal site in accordance with the embodiment of the present invention will be described with reference to the accompanying drawings.
Figure 2 depicts a type, the equivalent Figure 1, showing the circuit breaker, which is used bimetal site in accordance with the embodiment of the present invention. With reference to Figure 2, automatic switch 100 in accordance with the embodiment of the present invention includes heater 210 and bimetallic element 230. Heater 210 made by bending element having the form of a plate, a lot of times, and includes the adjoining plot 112 formed on its lower section, and communicating with bimetallic element 230, and separated plot (or separated area) 114, located on the top side of the connected plot 112. Adjoining plot 112 and separated plot 114 connected by connecting stage 116. Here, adjoining plot is separated plot and connecting plot of land divided in the description to explain, but in reality the adjoining plot 112, separated plot 114 and connecting plot 116 are made as one whole.
As shown in figure 2, connecting plot 116 bent to the right. Thus, as a result, separated plot 114 is remotely connected to the right of the plot 112. Bimetallic element 230 attached to section 112. In more detail, the lower tail section of the bimetallic element 230, in contact with communicating the plot 112, firmly attached bolt or similar item, and on the basis of the fixing points of the bimetallic element 230 might bend to move in both directions.
Thanks to the presence of projections 117, the distance between the bimetallic element 230 and detached plot 114 can be maintained such that have at least an adequate minimum level. Additionally, since the set of projections 117 is located in the direction of the length of separated plot 114, bimetallic element 230 can be supported in General the uniform interval. Thus, despite the fact that the bimetallic element 230 deformed due to tolerances in the course of the operations of the Assembly or the frequent use or bringing into effect, thanks to its contact with the tabs 117, an appropriate level, the distance may be maintained between them.
However, this invention is not necessarily limited to these manifestations, and an example in which the tabs are made on the bimetallic element, and not on a separate site, may also be considered. Here, the tabs can be performed on the site of the bimetallic element of intent to the outside area.
1. Bimetal site that contains: the heater connected with movable contact, which is served energy; and bimetallic element with one tail section attached to the heater, the heater includes: adjoining plot attached to bimetal element; separated plot and connecting plot connecting the adjoining plot is separated with a plot, with separate section is provided at least one projection, stretching from behind the plot towards the bimetal element so that separated the plot is situated at a distance from the bimetallic element.
2. Bimetal site according to claim 1, wherein a set of projections is located in the direction of the length of separated plot.
3. Bimetal site of claim 1, wherein leaf plots ledges far from the bimetallic element.
4. Bimetal site that contains: the heater connected with movable contact, which is served energy; and bimetallic element with one tail section attached to the heater, the heater includes: adjoining plot attached to bimetal element; separated plot and connecting plot connecting the adjoining plot is separated with a plot, with bimetallic element provided at least one projection, extending from the site of the bimetallic element, turned to a separate section, towards the separate section so that separated the plot is situated at a distance from the bimetallic element.
5. Bimetal site according to claim 4, wherein a set of projections is located in the direction of the length of the bimetallic element.
6. Bimetal site according to claim 4, which leaf plots projections distant from behind the plot.