A magnetic switch operating device

Abstract

The present invention discloses an excitation type switch operating device, including a base bracket and an excitation coil mechanism, a sliding actuator, and a manual operating mechanism arranged on the base bracket. The excitation coil mechanism includes a coil frame mounted on the base bracket, a static iron core and a moving iron core are mounted in the through cavity of the coil frame, and a permanent magnet is mounted on the circular axis of the static iron core; the excitation coil mechanism also includes a driving slider and a short shaft, the driving slider is fixedly assembled with the moving iron core, the end of the short shaft is fixed on the base bracket, and the middle part passes through the turning concentric hole of the driving slider; the driving slider is fixedly connected to the sliding actuator, and the switch handle A is controlled to open and close by the sliding actuator. The operating mechanism has both electric operation and manual operation. It has the advantages of simple structure, low height, small size, strong operability, high reliability, and low overall height, and is particularly suitable for circuit breakers with requirements on product height.

Description

Technical Field

[0001] The invention relates to the field of low-voltage electrical appliances, in particular to the field of circuit breaker operating mechanisms, and is an excitation type switch operating device. Background Art

[0002] At present, with the development of low-voltage electrical appliances and intelligent power grids, the functional requirements for circuit breakers are getting higher and higher, especially there is a strong demand for intelligence and communication. That is, more and more samples break through the traditional safety power protection devices, adopt the principle of mechanical automation, and combine modern electronic control technology to develop miniaturized, intelligent, and remotely operated safety power products.

[0003] A circuit breaker is an electrical or power grid protection device that can manually or electrically open or close a live circuit and automatically disconnect an overload circuit or a short circuit, and the operating mechanism is the most critical core component for operating the circuit breaker. The most widely used circuit breaker operating mechanism in the prior art is an upper motor drive, cam and plate hook structure. This structure has unreasonable aspects, such as excessive size, inconvenient manual operation, inaccurate opening and closing positioning, and inability to achieve instant braking, which brings safety hazards to the electrical system control. Summary of the invention

[0004] The purpose of the present invention is to provide an excitation switch operating device with simple structure, low height, small size, strong operability and high reliability, which is suitable for low-voltage plastic case circuit breakers.

[0005] The technical solution of the present invention is:

[0006] An excitation switch operating device includes a base bracket, and also includes an excitation coil mechanism and a sliding actuator arranged on the base bracket; the excitation coil mechanism includes a coil frame mounted on the base bracket, a static iron core and a moving iron core are mounted in a through cavity of the coil frame, the static iron core is fixed to one end of the through cavity, the moving iron core is sleeved on the concentric circular axis of the static iron core through its iron core cavity, and a permanent magnet is also mounted on the circular axis of the static iron core; the excitation coil mechanism also includes a driving slider and a short shaft, the driving slider is fixedly assembled with the moving iron core, the end of the short shaft is fixed to the base bracket, and the middle part passes through the turning concentric hole of the driving slider; the driving slider is fixedly connected to the sliding actuator, and the opening and closing of the switch handle A is controlled by the sliding actuator.

[0007] Preferably, the sliding actuator includes a lower slider located in the base bracket and two long axes. The lower slider is a symmetrical bent part with a conformal groove at the bottom, and is fixed to the driving slider in the excitation coil mechanism by fastening screws; the long axis is fixed to the base bracket, and the middle part passes through the concentric holes at both ends of the lower slider; the switch handle A is inserted into the conformal groove.

[0008] Preferably, it also includes a manual operating mechanism, which includes a positioning bracket located on the sliding actuator, a special-shaped shaft assembled on the circular characteristic hole of the positioning bracket, and both ends of the positioning bracket are fixed by a long axis. It also includes an upper slider symmetrically arranged on the long axis with the lower slider, and an internal rack is arranged on the upper slider. A gear is riveted on one end of the special-shaped shaft, and the gear cooperates with the internal rack of the upper slider.

[0009] Preferably, the upper slider is located above the lower slider, and both the lower slider and the upper slider are symmetrical bending parts with concentric holes at both ends, and the middle of the long axis passes through the concentric holes at both ends of the lower slider and the upper slider.

[0010] Preferably, the coil skeleton has a first protrusion and a second protrusion at both ends respectively, the first protrusion is assembled into a D-shaped cavity groove on the side of the base bracket; the second protrusion is assembled into a positioning piece, and the positioning piece is fixed in the middle position of the base bracket.

[0011] Preferably, the static iron core is concentrically assembled into the through cavity of the coil frame, and the bottom of the static iron core is aligned with the first protrusion of the coil frame.

[0012] Furthermore, the excitation coil device is applied to the circuit breaker operating mechanism, and a parallel resistor is used to shunt the current in the magnetic field coil, or a tap is used on the magnetic field coil to change the relationship between the armature current and the magnetic field strength, thereby providing the electric operating power for the mechanism.

[0013] The advantages of the present invention are:

[0014] 1. The overall structure of the present invention has the advantages of simple structure, low height, small size, strong operability and high reliability. The overall height is relatively low, and it is particularly suitable for circuit breakers with requirements on product height.

[0015] 2. The excitation operating mechanism described in the present invention has an extremely fast movement speed and a strong output force, so that the circuit breaker has the ability to quickly open and close, further providing effective protection for the safety of the power grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1 It is a schematic diagram of the structure of the excitation coil mechanism assembly of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the combination of the sliding actuator and the manual mechanism of the present invention;

[0019] Figure 3 It is a schematic diagram of the base support structure of the present invention;

[0020] Figure 4It is a schematic diagram of the coil skeleton structure of the present invention;

[0021] Figure 5 It is a comprehensive stereogram of the present invention.

[0022] Wherein: 008, excitation coil mechanism; 005, sliding actuator; 002, manual operating mechanism; 1, base bracket; 101, D-shaped cavity groove; 102, bracket hole; 103, concentric hole; 2, coil skeleton; 201 first protrusion; 202 through cavity; 203, second protrusion; 3, positioning piece; 302, fixing hole; 4, driving slider; 401, turning concentric hole; 5, static iron core; 501, round shaft; 6, moving iron core; 601, iron core cavity; 7, permanent magnet; 8, short shaft; 9, lower slider; 901, profile groove; 10, upper slider; 1001, inner rack; 1002, circular characteristic hole; 11, positioning bracket; 12, gear; 13, special-shaped shaft; 14, long shaft; 20, fastening screw; A, handle. DETAILED DESCRIPTION

[0023] Reference Figure 1-5 As shown, an excitation switch operating device of the present invention includes a base bracket 1, and also includes an excitation coil mechanism 008, a sliding actuator mechanism 005 and a manual operating mechanism 002 arranged on the base bracket 1.

[0024] The excitation coil mechanism 008 includes a coil frame 2 mounted on a base bracket, with a first protrusion 201 and a second protrusion 203 at both ends of the coil frame 2, the first protrusion 201 is mounted in a D-shaped cavity 101 on the side of the base bracket 1; the second protrusion 203 is mounted on a positioning member 3, and the positioning member 3 is fixed in the middle of the base bracket 1. A static iron core 5 and a moving iron core 6 are mounted in the through cavity 202 of the coil frame 2, the static iron core 5 is concentrically mounted in the through cavity 202 of the coil frame 2, and the bottom of the static iron core 5 is aligned with the first protrusion 201 of the coil frame 2. The moving iron core 6 is sleeved on the concentric circular shaft 501 of the static iron core 5 through its iron core cavity 601, and the circular shaft 501 of the static iron core 5 is also equipped with a permanent magnet 7; the excitation coil mechanism 008 also includes a driving slider 4 and a short shaft 8, the driving slider 4 is fixedly assembled with the moving iron core 6, the end of the short shaft 8 is fixed on the base bracket, and the middle part passes through the turning concentric hole 401 of the driving slider 4; the driving slider 4 is fixedly connected to the sliding actuator 005, and the opening and closing of the switch handle A is controlled by the sliding actuator 005.

[0025] The sliding actuator 005 includes a lower slider 9 and two long shafts 14 located in the base bracket 1. The lower slider 9 is a symmetrical bent part with a conformal groove 901 at the bottom, and is fixed to the driving slider 4 in the excitation coil mechanism 008 by fastening screws 20; the long shaft 14 is fixed on the base bracket, and the middle part passes through the concentric holes at both ends of the lower slider 9; the switch handle A is inserted into the conformal groove 901.

[0026] The manual operating mechanism 002 includes a positioning bracket 11 located on the sliding actuator 005, a special-shaped shaft 13 assembled on the circular characteristic hole 1002 of the positioning bracket 11, and the two ends of the positioning bracket 11 are fixed by a long shaft 14. It also includes an upper slider 10 symmetrically arranged on the long shaft 14 with the lower slider 9, and an inner rack 1001 is arranged on the upper slider 10. A gear 12 is riveted on one end of the special-shaped shaft 13, and the gear 12 cooperates with the inner rack 1001 of the upper slider 10. The upper slider 10 is located on the upper part of the lower slider 9. The lower slider 9 and the upper slider 10 are both symmetrical bending parts, and concentric holes are arranged at both ends. The middle part of the long shaft 14 passes through the concentric holes at both ends of the lower slider 9 and the upper slider 10.

[0027] This embodiment applies the excitation coil device to the circuit breaker operating mechanism, uses a parallel resistor to shunt the current in the magnetic field coil, or uses a tap on the magnetic field coil to change the relationship between the armature current and the magnetic field strength, which provides the electric operating power for the mechanism. The specific operation process of the present invention is as follows:

[0028] Combination Figure 3 As shown, when the excitation coil mechanism 008 executes the closing command, the moving iron core 6 moves forward (the dotted line is the original position) through the strong electromagnetic repulsion of the static iron core 5 and the moving iron core 6, driving the slider 4 to move forward guided by the short axis 8, and the slider 4 drives the lower slider 9 to move forward guided by the long axis 14. The lower slider 9 is the same moving part as the upper slider 10, that is, the groove 901 drives the handle A to move, thereby closing the circuit breaker.

[0029] On the contrary, Figure 4 As shown, when the excitation coil mechanism 008 executes the opening command, the moving iron core 6 is pushed toward the static iron core 5 (the dotted line is the original position) through the strong electromagnetic attraction of the static iron core 5 and the moving iron core 6, driving the slider 4 to move backward guided by the short axis 8, and the slider 4 drives the lower slider 9 to move forward guided by the long axis 14. The lower slider 9 is the same moving part as the upper slider 10, that is, the groove 901 drives the handle A to move, thereby opening the circuit breaker.

[0030] Combination Figure 3 , Figure 4As shown, when manual closing operation is required, the special-shaped shaft 13 can be rotated clockwise, and the linkage gear 12 rotates clockwise, thereby driving the upper slider 10 to move forward guided by the long axis 14. The lower slider 9 is the same moving part of the upper slider 10, that is, the groove 901 drives the handle A to move, thereby closing the circuit breaker.

[0031] On the contrary, when manual opening operation is required, the special-shaped shaft 13 can be rotated counterclockwise, and the linkage gear 12 rotates counterclockwise, thereby driving the upper slider 10 to move backward guided by the long axis 14. The lower slider 9 is the same moving part of the upper slider 10, that is, the following groove 901 drives the handle A to move, thereby closing the circuit breaker.

[0032] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A magnetic switch operating device, comprising a base support (1), characterized in that: The invention also includes an excitation coil mechanism (008) and a sliding actuator (005) arranged on a base bracket (1); the excitation coil mechanism (008) includes a coil frame (2) mounted on the base bracket, a static iron core (5) and a moving iron core (6) being mounted in a through cavity (202) of the coil frame (2), the static iron core (5) being fixed to one end of the through cavity (202), the moving iron core (6) being sleeved on a concentric circular shaft (501) of the static iron core (5) through its iron core cavity (601), and a permanent magnet (7) being mounted on the circular shaft (501) of the static iron core (5); the excitation coil mechanism (008) also includes a driving slider (4) and a short shaft (8), the driving slider (4) being fixedly assembled with the moving iron core (6), the end of the short shaft (8) being fixed to the base bracket, and the middle of the short shaft (8) passing through a turning concentric hole (401) of the driving slider (4); the driving slider (4) being fixedly connected to the sliding actuator (005), The switch handle (A) is controlled to open and close by the sliding actuator (005); The sliding actuator (005) comprises a lower slider (9) and two long shafts (14) located in a base bracket (1); the lower slider (9) is a symmetrical bent part with a conforming groove (901) at the bottom, and is fixed to a driving slider (4) in an excitation coil mechanism (008) by means of a fastening screw (20); the long shaft (14) is fixed to the base bracket, and the middle portion passes through concentric holes at both ends of the lower slider (9); the switch handle (A) is inserted into the conforming groove (901); The manual operating mechanism (002) further comprises a positioning bracket (11) located on the sliding actuator (005), a special-shaped shaft (13) mounted on a circular characteristic hole (1002) of the positioning bracket (11), the two ends of the positioning bracket (11) being fixed by a long shaft (14), and an upper slider (10) symmetrically arranged on the long shaft (14) with respect to the lower slider (9), an inner gear rack (1001) being arranged on the upper slider (10), a gear (12) being riveted to one end of the special-shaped shaft (13), and the gear (12) being matched with the inner gear rack (1001) of the upper slider (10).

2. The magnetic excitation switch operating device according to claim 1, characterized in that: The upper slider (10) is located above the lower slider (9); the lower slider (9) and the upper slider (10) are both symmetrical bent parts, with concentric holes provided at both ends; the middle of the long axis (14) passes through the concentric holes at both ends of the lower slider (9) and the upper slider (10).

3. The magnetic excitation switch operating device according to claim 2, characterized in that: The coil frame (2) has a first protrusion (201) and a second protrusion (203) at both ends, respectively; the first protrusion (201) is assembled into a D-shaped cavity (101) on the side of the base bracket (1); the second protrusion (203) is assembled onto a positioning member (3), and the positioning member (3) is fixed at a middle position of the base bracket (1).

4. The magnetic excitation switch operating device according to claim 3, characterized in that: The static iron core (5) is concentrically assembled into the through cavity (202) of the coil frame (2), and the bottom of the static iron core (5) is aligned with the first protrusion (201) of the coil frame (2).

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