Electric switch circuit breaker tripping system

Abstract

The invention discloses an electric switch circuit breaker tripping system, which relates to the technical field of circuit breakers and comprises an outer shell, an inner shell, an opening and closing device, a binding post and a conductive component. The inner shell is an insulating component, and is internally provided with a switching-on and switching-off device, a binding post and a conductive part. The switching-on and switching-off device adopts an electric driving module, a motor drives a shaft sleeve to rotate, a gear is driven to be meshed with a handle toothed plate, and switching-on and switching-off operation is achieved. The handle is connected with the deflection seat through a connecting rod, and the deflection seat drives the deflection plate and the contact to rotate and contact with the conductive contact piece to complete closing. The electric driving module is provided with an abutting protrusion and an abutting groove, and it is ensured that the handle can automatically rotate during leakage protection. The tops of the outer shell and the inner shell are provided with avoiding holes for deflection of the handle, and two sides are provided with threading holes connected with an external cable. According to the invention, the electric driving structure is simplified, the operation flexibility and compatibility are improved, the reliability and stability of the circuit breaker are enhanced, and the circuit breaker is suitable for various power system application scenes.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breakers, in particular to an electric switch circuit breaker tripping system. Background Art

[0002] In the power system, circuit breakers, as key protection and control equipment, undertake the task of breaking and closing circuits, which is crucial to the safe and stable operation of the power system. Traditional circuit breakers are mainly opened and closed by manual operation, which is not flexible and convenient in some occasions with high automation requirements. With the continuous advancement of electrical technology, electric switch circuit breakers came into being. It realizes remote or automatic control through electric drive mechanisms, greatly improving operating efficiency and safety.

[0003] However, existing electric switch circuit breakers still have some deficiencies in terms of electric drive. For example, the electric drive mechanism of some circuit breakers is complex in design and contains many parts, which not only increases the manufacturing cost but also may cause maintenance difficulties. At the same time, the complex drive mechanism is prone to failure after long-term operation, affecting the reliability and stability of the circuit breaker.

[0004] In addition, some electric switch circuit breakers lack good compatibility between electric drive and manual operation. When manual operation is required, the complex electric drive mechanism may become an obstacle, making manual operation difficult or impractical. When the electric drive fails, these circuit breakers often cannot smoothly transition to manual operation mode, which brings inconvenience to emergency handling of power systems.

[0005] In response to the above problems, the industry has been exploring simpler, more efficient and reliable electric drive solutions. This technical solution proposes an electrically operated switch circuit breaker with an innovative electric drive module, aiming to overcome the shortcomings of the prior art and provide an electric switch circuit breaker with a simpler structure, more flexible operation and better compatibility. The electric drive module drives the shaft sleeve to rotate through a motor, which in turn drives the gear to engage with the toothed plate on the handle to achieve the opening and closing operation. At the same time, the module is also designed with structures such as interference protrusions and interference grooves to ensure that the handle can automatically rotate in situations such as leakage protection, thereby not affecting the normal function of the circuit breaker. This design not only improves the automation level of the circuit breaker, but also ensures its reliability and stability under various circumstances. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides an electric switch circuit breaker tripping system, which solves the problems raised by the above-mentioned background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an electric switch circuit breaker tripping system, comprising an outer shell, an inner shell, an opening and closing device, a terminal A, a terminal B, a conductive sheet and a conductive contact, the inner shell is an insulating component and is installed inside the outer shell, the opening and closing device, the terminal A, the terminal B, the conductive sheet and the conductive contact are all installed inside the inner shell, and the opening and closing device can be electrically swung to contact or leave the conductive contact, thereby controlling the closing or opening state of the circuit breaker.

[0008] Furthermore, the terminal A and the terminal B are symmetrically arranged, the output end of the terminal A contacts the conductive sheet, the other end of the conductive sheet contacts the conductive contact sheet, and the output end of the opening and closing device is connected to the terminal B via a flexible wire.

[0009] Furthermore, the opening and closing device includes an electric drive module, a handle, a deflection seat and a deflection plate. The handle is rotatably connected to the top of the deflection seat through a connecting rod, the deflection plate is fixedly connected inside the deflection seat, and the bottom end of the deflection plate is integrally connected to a contact, which can contact a conductive contact piece.

[0010] Furthermore, the electric drive module includes a motor, a drive end of the motor is installed with a shaft sleeve, the outside of the shaft sleeve is engaged with a sleeve, the outside of the sleeve is fixed with a gear, and the gear is meshed with a toothed plate at the bottom end of the handle.

[0011] Furthermore, the output end of the motor and the inside of the sleeve are both "D"-shaped adapter structures, the sleeve surface is integrally connected to the interference protrusion, and the inner surface of the sleeve is provided with an interference groove. The interference protrusion can rotate in the interference groove and drive the sleeve to rotate synchronously.

[0012] Furthermore, a locking groove is provided on the outer surface of the sleeve, and a locking protrusion is integrally connected to the interior of the gear, and the locking protrusion is engaged in the locking groove.

[0013] Furthermore, the outer shell and the inner shell have a common avoidance hole at the top, and the handle is exposed to the outside of the outer shell through the avoidance hole and can swing in the avoidance hole.

[0014] Furthermore, both sides of the outer shell and the inner shell are provided with threading holes, and external cables can be connected to the terminal A and the terminal B respectively through the threading holes.

[0015] The present invention provides an electric switch circuit breaker tripping system. Compared with the prior art, it has the following beneficial effects: 1. Through the innovative design of the electric drive module, this circuit breaker effectively simplifies the complex drive mechanism in the traditional electric switch circuit breaker. The number of parts is reduced, which not only reduces the manufacturing cost, but also reduces the weight of the equipment, making it easier to install and maintain; 2. The electric drive module enables the circuit breaker to be opened and closed by remote or automatic control, greatly improving the flexibility and convenience of operation. This is especially important for power systems with high automation requirements, and can significantly improve operating efficiency and safety; 3. The electric drive module and the manual operating mechanism have achieved good compatibility. When manual operation is required, the electric drive module will not become an obstacle, ensuring the availability of the circuit breaker in various situations. At the same time, the design of the abutment protrusion and abutment groove ensures that the handle can automatically rotate in the case of leakage protection, enhancing the reliability and stability of the circuit breaker; 4. The simplified structure and efficient operation mode make it easier for users to master the use of circuit breakers, reducing the difficulty of operation. At the same time, the reduced number of parts also means fewer potential failure points, lower maintenance costs and maintenance difficulties; 5. The electric drive module of this circuit breaker is flexibly designed to meet the needs of various power systems and application scenarios. Whether in industrial, commercial or residential fields, it can provide stable and reliable circuit protection and control functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the split structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the inner shell of the present invention; Figure 3 It is a structural schematic diagram of the opening and closing device in the present invention; Figure 4 It is a schematic diagram of the split structure of the electric drive module in the present invention; Figure 5 It is a schematic diagram of the structure of the shaft sleeve, sleeve and gear in the present invention; Figure 6 A top view of the electric drive module of the present invention after assembly; Figure 7 For the present invention Figure 6 Cross-section of the middle AA; Figure 8 It is a schematic diagram of the assembly structure of the present invention; Fig. 9 It is a structural schematic diagram of the present invention in the open state and the closed state; Fig.10 For the present invention Fig. 9 Schematic diagram of the changes in the interference protrusion and the inside of the interference groove during the change process.

[0017] In the figure: 1. outer shell; 11. avoidance hole; 12. threading hole; 2. inner shell; 3. opening and closing device; 31. electric drive module; 311. motor; 312. bushing; 3121. interference protrusion; 313. sleeve; 3131. interference groove; 3132. positioning groove; 314. gear; 3141. positioning protrusion; 32. handle; 321. tooth plate; 33. deflection seat; 34. deflection plate; 341. contact; 35. connecting rod; 4. terminal A; 5. terminal B; 6. conductive sheet; 7. conductive contact sheet. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-9 The present invention provides a technical solution: an electric switch circuit breaker tripping system, comprising an outer shell 1, an inner shell 2, an opening and closing device 3, a terminal A4, a terminal B5, a conductive sheet 6 and a conductive contact 7, wherein the inner shell 2 is an insulating component and is fixedly installed inside the outer shell 1, the opening and closing device 3, the terminal A4, the terminal B5, the conductive sheet 6 and the conductive contact 7 are all installed inside the inner shell 2, wherein the terminal A4 and the terminal B5 are symmetrically arranged, the output end of the terminal A4 contacts the conductive sheet 6, and the end of the conductive sheet 6 away from the terminal A4 contacts the conductive contact 7, the output end of the opening and closing device 3 is connected to the terminal B5 through a flexible wire, and the opening and closing device 3 can be deflected in an electric manner, and when it deflects to contact with the conductive contact 7, the circuit breaker is in a closed state, and when it is not in contact, the circuit breaker is in an open state; The switch opening and closing device 3 includes an electric drive module 31 installed inside the inner housing 2, a handle 32 rotatably connected to the inner housing 2, a deflection seat 33 rotatably connected to the inner housing 2, and a deflection plate 34 fixedly connected to the deflection seat 33. The handle 32 is rotatably connected to the top of the deflection seat 33 through a connecting rod 35. That is, when the handle 32 deflects, the deflection seat 33 and the deflection plate 34 can be driven to deflect synchronously through the connecting rod 35. The bottom end of the deflection plate 34 is integrally connected to a contact 341, which can contact the surface of the conductive contact piece 7. The bottom end of the handle 32 is connected and fixed to a toothed plate 321 with an arc structure. The electric drive module 31 includes a motor 311 installed inside the inner housing 2. A shaft sleeve 312 is fixedly mounted on the driving end of the motor 311. A sleeve 313 is mounted on the outside of the shaft sleeve 312. A gear 314 is fixedly mounted on the outside of the sleeve 313. The gear 314 is meshed with a toothed plate 321. The output end of the motor 311 and the interior of the shaft sleeve 312 are both configured to be in a matching "D" shape. The surface of the shaft sleeve 312 is integrally connected to the abutment protrusion 3121. The inner surface of the sleeve 313 is reserved to provide a abutment groove 3131. The shaft sleeve 312 can drive the abutment protrusion 3121 to rotate inside the abutment groove 3131. When the abutment protrusion 3121 is rotated to abut against the protruding part inside the abutment groove 3131, the shaft sleeve 312 drives the sleeve 313 to rotate synchronously, thereby driving the gear 314 to rotate. The outer surface of the sleeve 313 is reserved to provide a locking groove 3132. The interior of the gear 314 is integrally connected to the locking protrusion 3141. The locking protrusion 3141 is engaged in the locking groove 3132. When the closing operation is required, the motor 311 drives the sleeve 312 to rotate inside the sleeve 313, and the abutment protrusion 3121 also rotates inside the abutment groove 3131. When the abutment protrusion 3121 rotates to abut against the abutment groove 3131, the sleeve 312, the sleeve 313 and the gear 314 rotate synchronously, and the gear 314 meshes with the toothed plate 321, thereby driving the handle 32 to deflect. Under the abutment and pushing action of the connecting rod 35, the deflection seat 33 and the deflection plate 34 rotate clockwise as a whole until the bottom of the deflection plate 34 is The contact 341 abuts against the surface of the conductive contact piece 7, that is, the closing operation is completed. When the opening operation is required, the same operation can be performed. It should be noted that due to the design of the abutting protrusion 3121 and the abutting groove 3131, the handle 32 can also automatically rotate when the leakage protection of the circuit breaker occurs. The automatic rotation structure is an inherent structure of the existing circuit breaker and will not be described in detail here. It will not be unable to rotate due to the existence of the motor 311. In other words, the circuit breaker will not affect the leakage protection measures of the circuit breaker while realizing electric opening and closing.

[0020] An avoidance hole 11 is reserved at the top of the outer shell 1 and the inner shell 2, and the handle 32 is exposed to the outside of the outer shell 1 through the avoidance hole 11, and the handle 32 swings inside the avoidance hole 11, so the opening length of the avoidance hole 11 must meet the swing amplitude of the handle 32. Wire holes 12 are reserved on both sides of the outer shell 1 and the inner shell 2, and external cables can be connected to the terminal A4 and the terminal B5 respectively through the wire holes 12 on both sides, so as to facilitate the circuit breaker to connect to external lines.

[0021] In addition, it should be noted that the circuit breaker is also provided with a circuit board, on which a communication module and a single-chip microcomputer are integrated, and the communication module can be connected to an external remote control terminal (such as a computer or a mobile phone, etc.), and a signal of opening or closing the gate can be sent to the communication module, and then the motor 311 is controlled in combination with the single-chip microcomputer, thereby realizing remote or automatic control to realize the opening and closing operation; Finally, it should be noted that during the process of the circuit breaker performing power-off protection (i.e. leakage protection), if Fig.10 As shown, the figure shows the state of the circuit breaker changing from open (i.e., when point b of the contact protrusion 3121 coincides with point d of the contact groove 3131) to closed (i.e., when point a of the contact protrusion 3121 coincides with point c of the contact groove 3131). Similarly, when leakage occurs, the automatic rotation structure of the circuit breaker will drive either the handle 32 or the gear 314 to rotate (i.e., change from closing to opening), and the gear 314 can rotate 180° without interference (i.e., from the coincidence of point a of the contact protrusion 3121 and point c of the contact groove 3131, to the coincidence of point b of the contact protrusion 3121 and point d of the contact groove 3131, and this angle is at least 180°). In other words, the opening of the gate can still be achieved without the need for the motor 311 to drive the gear 314 to rotate, so that it is not affected by the motor 311 factor, thereby achieving a quick response.

Claims

1. An electric switch circuit breaker tripping system, characterized in that: The invention comprises an outer shell (1), an inner shell (2), an opening and closing device (3), a terminal A (4), a terminal B (5), a conductive sheet (6) and a conductive contact sheet (7), wherein the inner shell (2) is an insulating component and is installed inside the outer shell (1), and the opening and closing device (3), the terminal A (4), the terminal B (5), the conductive sheet (6) and the conductive contact sheet (7) are all installed inside the inner shell (2), and the opening and closing device (3) can be electrically deflected to contact or leave the conductive contact sheet (7), thereby controlling the closing or opening state of the circuit breaker; The electric drive module (31) comprises a motor (311), a shaft sleeve (312) is installed on the driving end of the motor (311), a sleeve (313) is engaged with the outside of the shaft sleeve (312), a gear (314) is fixed on the outside of the sleeve (313), and the gear (314) is meshed with a toothed plate (321) at the bottom end of the handle (32).

2. The electrically switchable circuit breaker according to claim 1, characterized in that: The terminal A (4) and the terminal B (5) are symmetrically arranged, the output end of the terminal A (4) contacts the conductive sheet (6), the other end of the conductive sheet (6) contacts the conductive contact sheet (7), and the output end of the switch opening and closing device (3) is connected to the terminal B (5) via a flexible wire.

3. The electrically switchable circuit breaker according to claim 1, characterized in that: The switch opening and closing device (3) comprises an electric drive module (31), a handle (32), a deflection seat (33) and a deflection plate (34); the handle (32) is rotatably connected to the top of the deflection seat (33) via a connecting rod (35); the deflection plate (34) is fixedly connected inside the deflection seat (33); the bottom end of the deflection plate (34) is integrally connected to a contact (341); and the contact (341) can contact a conductive contact piece (7).

4. The electrically switchable circuit breaker according to claim 1, characterized in that: The output end of the motor (311) and the interior of the shaft sleeve (312) are both "D"-shaped adapting structures; the surface of the shaft sleeve (312) is integrally connected with a contact protrusion (3121); the inner surface of the sleeve (313) is provided with a contact groove (3131); the contact protrusion (3121) can rotate in the contact groove (3131) and drive the sleeve (313) to rotate synchronously.

5. The electrically switchable circuit breaker according to claim 1, characterized in that: The outer surface of the sleeve (313) is provided with a locking groove (3132), the interior of the gear (314) is integrally connected with a locking protrusion (3141), and the locking protrusion (3141) is locked in the locking groove (3132).

6. The electrically switchable circuit breaker according to claim 1, characterized in that: The outer shell (1) and the inner shell (2) are provided with a relief hole (11) at the top thereof; the handle (32) is exposed to the outside of the outer shell (1) through the relief hole (11) and can swing in the relief hole (11).

7. The electrically switchable circuit breaker according to claim 1, characterized in that: Both sides of the outer shell (1) and the inner shell (2) are provided with threading holes (12), and external cables can be connected to the terminal A (4) and the terminal B (5) respectively through the threading holes (12).

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