JP3207089U - Circuit breaker with self-locking function - Google Patents

Abstract

A circuit breaker with a self-locking function capable of protecting the safety of the circuit breaker itself and electrical equipment is provided. A circuit breaker having a self-locking function including an upper housing, a lower housing, a self-locking electromagnetic coil, and a self-locking elastic rubber sheet. The upper housing 1 and the lower housing 2 are engaged with each other. The upper casing is connected to the central portion of the upper casing so as to pass through the start switch 17, and the upper and lower sides of the upper casing are provided with the drawing groove 3 and the drawing groove 4, respectively. Wiring holes 5 are provided on the inner side, a mount angle 6 is provided on the outer peripheral edge of the lower housing, a mounting hole 7 is formed at the center of the mount angle, and the upper and lower sides of the inner chamber of the lower housing are provided. An input side contact piece and an output side contact piece are provided, and a connection plate is provided between the input side contact piece and the output side contact piece. [Selection] Figure 1

Description

  The present invention relates to the circuit breaker field, and more particularly to a circuit breaker with a self-locking function.

  A circuit breaker (English: circuit breaker) is a circuit breaker that can be turned on, turned on and off under normal circuit conditions, and turned on and specified even under abnormal circuit conditions such as a short circuit. A mechanical switchgear that has the ability to turn on and off. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to the range of use.

  Since conventional circuit breakers do not have a self-lock function, phenomena such as burnout and damage of the circuit breaker itself appear during use, and because they do not have a self-lock function, they also cause damage to electrical equipment. As a result, a relatively large economic loss occurred. Conventional circuit breakers that do not have a self-locking function require regular repairs and replacements, which increases unnecessary expenditure.

  Accordingly, an object of the present invention is to provide a circuit breaker with a self-locking function in order to solve the problems submitted in the background art.

  In order to achieve the above object, the present invention provides a technical plan of a circuit breaker with a self-locking function, which includes an upper housing, a lower housing, a self-locking electromagnetic coil, and a self-locking elastic rubber sheet. The upper case and the lower case are connected through locking, connected to the center of the upper case so as to pass through the activation switch, and a pulling groove and a drawing groove are provided on the upper side and the lower side of the upper case, respectively. Wiring holes are provided inside both the drawing groove and the drawing groove.

  A mounting angle is provided on the outer peripheral edge of the lower casing, a mounting hole is formed in the center of the mounting angle, and an input side contact piece and an output side contact are provided on the upper side and the lower side of the inner chamber of the lower casing, respectively. A piece is provided, and a connection plate is provided between the input side contact piece and the output side contact piece.

  A central portion of the connection plate is embedded in a ceramic insulator, the ceramic insulator is fixed to an upper portion of the connection plate mounting base, a self-locking rotary shaft is fixed to a lower side of the connection plate mounting base, and the self-locking is performed. Both ends of the rotating shaft are rotatably connected to both side walls of the lower casing.

  A permanent magnet is fixed to the lower part of the connection plate, the position of the permanent magnet corresponds to the position of the start switch, the self-locking electromagnetic coil is positioned below the permanent magnet, and is fixed to the inner wall of the lower housing. And electrically connected to the output side contact piece.

  The upper end of the connection plate is located below the input side contact piece, and the self-locking elastic rubber sheet is located below the upper end of the connection plate.

  It is preferable that three sets of the input side contact piece and the output side contact piece are provided and correspond to the vertical direction.

  Three sets of the connection plates and permanent magnets are provided, and the connection plates are used for connecting to the three phases of circuits A, B, and C, respectively, and the self-locking electromagnetic coil is used for the number of connection plates. It is preferable to correspond and be positioned uniformly below the connecting plate.

  It is preferable that at least four sets of the mount angles are provided and are uniformly arranged outside the lower housing.

  Compared to the prior art, the present invention is more convenient for controlling circuit conduction / cutoff by adding an input side contact piece and an output side contact piece. By adding a coil, when a short circuit occurs in the circuit, the self-locking electromagnetic coil can be conducted, thus generating the same magnetic pole as the permanent magnet, repelling each other, the connection plate rotating around the self-locking rotation axis, The self-lock works by shutting down the circuit through the engaging action of the self-locking elastic rubber sheet and ensuring that the connecting plate does not repel. The structure of the present invention is simple, effectively plays a role of circuit breaker / self-lock, and can protect the safety of the circuit breaker itself and electrical equipment.

It is a schematic diagram which shows the structure of this invention. It is a top view of the lower housing | casing of this invention. It is a side view of the lower housing | casing of this invention.

Hereinafter, the technical solutions in the embodiments of the present invention will be described in detail with reference to the accompanying drawings in the embodiments of the present invention. The described embodiments are not all embodiments, but only some examples of the present invention. Based on the embodiments within the present invention, all other embodiments obtained under the assumption that those skilled in the art can easily reach them with a little effort and effort will fall within the protection scope of the present invention.

  1 to 3, a circuit breaker with a self-locking function, which is a technical solution provided by the present invention, includes an upper housing 1, a lower housing 2, a self-locking electromagnetic coil 15, and a self-locking elastic rubber sheet 16. Including. The upper housing 1 and the lower housing 2 are connected through locking, connected to the central portion of the upper housing 1 so as to pass through the activation switch 17, and the pull-in grooves 3 on the upper and lower sides of the upper housing 1, respectively. The lead-out groove 4 is provided, and both the lead-in groove 3 and the lead-out groove 4 are provided with a wiring hole 5 and used for passing an electric wire.

  Mount angles 6 are provided on the outer peripheral edge of the lower housing 2. At least four sets of mount angles 6 are arranged uniformly on the outer side of the lower housing 2, and a mounting hole 7 is provided at the center of the mount angle 6. By opening, this circuit breaker can be more stably attached. An input side contact piece 8 and an output side contact piece 9 are provided on the upper and lower sides of the inner chamber of the lower housing 2, respectively. Three sets of the input side contact piece 8 and the output side contact piece 9 are provided, and each of them is vertical. Corresponding to the direction, the connection plate 10 is provided between the input side contact piece 8 and the output side contact piece 9, and further control of the conduction / cutoff of the circuit is performed through the control of the connection status between the connection plate 10 and the two sets of contact pieces. And plays a protective role in electrical equipment.

  The central part of the connection plate 10 is embedded in the ceramic insulator 11, the ceramic insulator 11 is fixed to the upper part of the connection plate mounting base 12, and the self-locking rotary shaft 13 is fixed to the lower side of the connection plate mounting base 12, Both ends of the self-locking rotary shaft 13 are rotatably connected to both side walls of the lower housing 2 respectively, and when a failure occurs, the connection plate 10 is rotated around the self-locking rotary shaft 13 to thereby burn out the circuit breaker. Can be avoided.

  A permanent magnet 14 is fixed to the lower part of the connection plate 10, the position of the permanent magnet 14 corresponds to the position of the start switch 17, the self-locking electromagnetic coil 15 is located below the permanent magnet 14, and It is solidified with the inner wall and electrically connected to the output side contact piece 9. Three sets of connection plates 10 and permanent magnets 14 are provided, and the connection plate 10 is used to connect to the three phases of circuits A, B, and C, and the self-locking electromagnetic coil 15 is connected to the connection plate 10. It corresponds to the quantity and is located uniformly on the lower side of the connecting plate 10 and when a failure or short circuit occurs in the line, the self-locking electromagnetic coil 15 is energized to generate the same magnetic pole as the permanent magnet 14 and repel it. In addition, the connection plate 10 is separated from between the input side contact piece 8 and the output side contact piece 9 to play a role of protection against circuit interruption.

  The upper end of the connection plate 10 is located below the input side contact piece 8 and the self-locking elastic rubber sheet 16 is located below the upper end of the connection plate 10. Since the bounced connection plate 10 never comes into contact with the input side contact piece 8 and the output side contact piece 9 again, the self-lock works until the operator presses the start switch 17 again to turn on the circuit breaker.

  Since the structure and principle of the present invention are simple, it is easy to produce and use, convenient for repair, and has a preferable self-locking protection function of circuit interruption.

  The above description is merely an example of the present invention, and it will be apparent to those skilled in the art that various improvements and modifications of the present invention can be made without departing from the principle and spirit of the present invention. . The scope of the present invention is limited to the attached utility model registration request and its equivalents.

DESCRIPTION OF SYMBOLS 1 Upper housing | casing 2 Lower housing | casing 3 Pull-in groove 4 Pull-out groove 5 Wiring hole 6 Mount angle 7 Mounting hole 8 Input side contact piece 9 Output side contact piece 10 Connection board 11 Ceramic insulator 12 Connection board mounting base 13 Self-locking rotating shaft 14 Permanent magnet 15 Self-locking electromagnetic coil 16 Self-locking elastic rubber sheet 17 Start switch

Claims (4)

A circuit breaker with a self-locking function including an upper housing, a lower housing, a self-locking electromagnetic coil, and a self-locking elastic rubber sheet, wherein the upper housing and the lower housing are connected through locking, The upper casing is connected to the central portion so as to pass through the start switch, and a pulling groove and a pulling groove are provided on the upper and lower sides of the upper casing, respectively, inside the pulling groove and the pulling groove. Both have wiring holes,
A mounting angle is provided on the outer peripheral edge of the lower casing, a mounting hole is formed in the center of the mounting angle, and an input side contact piece and an output side contact are provided on the upper side and the lower side of the inner chamber of the lower casing, respectively. Provided with a connecting plate between the input side contact piece and the output side contact piece,
A central portion of the connection plate is embedded in a ceramic insulator, the ceramic insulator is fixed to an upper portion of the connection plate mounting base, a self-locking rotary shaft is fixed below the connection plate mounting base, and the self-locking rotation is performed. Both ends of the shaft are rotatably connected to both side walls of the lower casing,
A permanent magnet is fixed to the lower part of the connection plate, the position of the permanent magnet corresponds to the position of the start switch, the self-locking electromagnetic coil is located below the permanent magnet, and the inner wall of the lower housing And electrically connected to the output side contact piece,
A circuit breaker with a self-locking function, wherein an upper end of the connection plate is located below the input side contact piece, and the self-locking elastic rubber sheet is located below the upper end of the connection plate.   The circuit breaker with a self-locking function according to claim 1, wherein three sets of the input side contact piece and the output side contact piece are provided and correspond to the vertical direction.   Three sets of the connection plates and the permanent magnets are provided, and the connection plates are used to connect to the three phases of circuits A, B, and C, respectively, and the self-locking electromagnetic coil is the connection plate. The circuit breaker with a self-locking function according to claim 1, wherein the circuit breaker corresponds to the quantity and is uniformly positioned below the connection plate.   The circuit breaker with a self-locking function according to claim 1, wherein at least four sets of the mount angles are provided and are uniformly arranged outside the lower housing.

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