A circuit breaker device for transient overload conditions

Abstract

The utility model relates to the technical field of circuit breakers, and specifically discloses a circuit breaker device for instantaneous overload state, comprising a circuit breaker body and an observation window hinged on the front of the circuit breaker body through a hinge, a locking component is commonly provided on the right side of the circuit breaker body and the right side of the observation window, the locking component comprises a first locking plate fixedly connected to the right side of the circuit breaker body, a second locking plate is fixedly connected to the right side of the observation window, the front side of the first locking plate and the back side of the second locking plate after rotation overlap each other, the observation window is locked by staggering the locking wheel and the first locking plate and the second locking plate, so that the observation window does not need to be locked by a metal lock, and because the circuit breaker body and the observation window are not locked by the metal lock, it is avoided that the maintenance personnel repeatedly retrieves the key when maintaining the circuit breaker body, thereby saving time for the maintenance of the circuit breaker body and also avoiding marking of multiple circuit breaker bodies.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a circuit breaker device used in an instantaneous overload state. Background Art

[0002] A circuit breaker device is a device used to protect circuits from damage caused by overload current. A circuit breaker is an electrical switch that can quickly cut off the circuit when the current exceeds its rated value, preventing wires, cables and electrical equipment from overheating, damage or even fire.

[0003] Instantaneous overload usually refers to the situation where the current in the circuit increases instantly in a short period of time. This may be caused by the instantaneous current impact of starting the motor or electrical equipment, short circuit fault or other abnormal conditions. The circuit breaker device detects and cuts off the overload current in the circuit through sensitive trigger devices and fuses and other protective elements to protect the safe operation of the circuit and related equipment;

[0004] In the prior art, since D-type circuit breakers are often used in industry and the industrial electricity load is large, maintenance personnel are required to conduct regular inspections to ensure the service life of the circuit breakers. A protective cover is set on the outside of the circuit breaker and locked to prevent non-maintenance personnel from accidentally touching it. Therefore, the keys required for multiple circuit breakers need to be marked accordingly, and maintenance personnel also need to repeatedly retrieve different keys before maintenance, which affects the maintenance time of the circuit breaker. Summary of the invention

[0005] The purpose of the utility model is to provide a circuit breaker device for instantaneous overload state, which can reduce the locking of the circuit breaker body and the observation window by the metal lock, avoid the maintenance personnel to repeatedly retrieve the key when maintaining the circuit breaker body, thereby saving time for the maintenance of the circuit breaker body, and avoid marking multiple circuit breaker bodies, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a circuit breaker device for instantaneous overload state, comprising a circuit breaker body and an observation window hinged on the front of the circuit breaker body by a hinge, the right side of the circuit breaker body and the right side of the observation window are jointly provided with a locking component, and the locking component comprises a first locking plate fixedly connected to the right side of the circuit breaker body;

[0007] A second locking plate is fixedly connected to the right side of the observation window, the front side of the first locking plate and the back side of the second locking plate after rotation overlap each other, a rotating seat is fixedly connected to the right side of the circuit breaker body, a rolling ball is rollingly connected inside the rotating seat, a locking wheel is fixedly connected to the outside of the ball, an end of the locking wheel close to the ball is rotatably connected to the inside of the rotating seat, the locking wheel is inserted into the inside of the first locking plate after rotation, and the locking wheel is inserted into the inside of the second locking plate after rotation.

[0008] Preferably, the plurality of semi-circular disks on the outer side of the locking wheel are cross-inserted into the first locking plate and the second locking plate, and the first locking plate is composed of a plurality of semi-circular disks.

[0009] Preferably, the locking wheel is rotated ninety degrees around the rotating seat through the rolling ball, and the locking wheel itself is rotated three hundred and sixty degrees through the rolling ball.

[0010] Preferably, a shielding component is provided on the right side of the circuit breaker body, and the shielding component comprises a slide groove opened on the right side of the circuit breaker body, a slider is slidably connected inside the slide groove, and a protective cover is fixedly connected to the right side of the slider.

[0011] Preferably, the protective cover is sleeved on the outer side of the rotating seat, and the protective cover extends to an end of the locking wheel away from the rolling ball.

[0012] Preferably, a limit groove is provided on the right side of the slider, an inclined surface is provided on the upper side of the slider, and a limit pin is slidably connected inside the circuit breaker body.

[0013] Preferably, the inclined surface on the left side of the limiting latch is in extrusion contact with the inclined surface of the sliding block after it moves upward, and the limiting groove is clamped with the left end of the limiting latch after it moves upward.

[0014] Preferably, a fixed seat is fixedly connected to the right side of the circuit breaker body, a movable groove is opened on the fixed seat, the movable groove is communicated with the slide groove, the limit latch is slidably connected inside the movable groove, two return springs are fixedly connected to the right side of the inside of the movable groove, and the other ends of the two return springs are fixedly connected to the side of the limit latch close to the return spring.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The observation window is locked alternately by the locking wheel and the first locking plate and the second locking plate, so that the observation window does not need to be locked by a metal lock. Since the circuit breaker body and the observation window are not locked by a metal lock, it is avoided that the maintenance personnel repeatedly retrieve the key when maintaining the circuit breaker body, thereby saving time for the maintenance of the circuit breaker body and avoiding marking multiple circuit breaker bodies;

[0017] 2. The locking wheel is half-wrapped by the protective cover, and the protective cover will be locked by the limit pin after moving upward. Since the protective cover wraps the locking wheel, the locking wheel cannot rotate around the rotating seat through the ball, so as to prevent the locking wheel from being separated from the second locking plate, thereby avoiding non-maintenance personnel from being injured due to accidental touch, thereby improving the safety of the circuit breaker body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is the overall structural view of the utility model;

[0020] Figure 2 It is a schematic diagram of a half-section structure of the utility model;

[0021] Figure 3 It is a schematic diagram of a half-section structure of the protective cover of the utility model;

[0022] Figure 4 It is a half-section structural schematic diagram of the slideway of the utility model;

[0023] Figure 5 It is a schematic diagram of the half-section structure of the fixing seat of the utility model.

[0024] Description of reference numerals:

[0025] 1. Circuit breaker body; 2. Observation window; 3. Locking component; 31. First locking plate; 32. Second locking plate; 33. Rotating seat; 34. Rolling ball; 35. Locking wheel; 4. Shielding component; 41. Slide groove; 42. Sliding block; 43. Protective cover; 44. Limiting groove; 45. Limiting pin; 46. Fixed seat; 47. Moving groove; 48. Reset spring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The utility model provides a technical solution:

[0028] See also Figures 1 to 5 , a circuit breaker device for instantaneous overload state, comprising a circuit breaker body 1 and an observation window 2 hinged on the front of the circuit breaker body 1 by a hinge, a locking component 3 is provided on the right side of the circuit breaker body 1 and the right side of the observation window 2, and the locking component 3 comprises a first locking plate 31 fixedly connected to the right side of the circuit breaker body 1;

[0029] A second locking plate 32 is fixedly connected to the right side of the observation window 2, the front side of the first locking plate 31 and the back side of the second locking plate 32 after rotation overlap each other, a rotating seat 33 is fixedly connected to the right side of the circuit breaker body 1, a ball 34 is rollingly connected to the inside of the rotating seat 33, a locking wheel 35 is fixedly connected to the outside of the ball 34, one end of the locking wheel 35 close to the ball 34 is rotatably connected to the inside of the rotating seat 33, the locking wheel 35 is rotated and inserted into the inside of the first locking plate 31, and the locking wheel 35 is rotated and inserted into the inside of the second locking plate 32.

[0030] The multiple semi-circular disks on the outer side of the locking wheel 35 are cross-inserted into the first locking plate 31 and the second locking plate 32 , and the first locking plate 31 is composed of multiple semi-circular disks.

[0031] The locking wheel 35 is rotated ninety degrees around the rotating seat 33 by the rolling ball 34 , and the locking wheel 35 itself is rotated three hundred and sixty degrees by the rolling ball 34 .

[0032] By adopting the above technical solution, first, when the observation window 2 is opened from the front of the circuit breaker body 1, since the first locking plate 31 and the second locking plate 32 are both composed of semi-circular disks, when the locking wheel 35 rotates 180 degrees, the outer semi-circular disk of the locking wheel 35 will be separated from the gap inside the first locking plate 31 on the right side of the circuit breaker body 1 and the second locking plate 32 on the right side of the observation window 2, and then the locking wheel 35 is turned. Since one end of the locking wheel 35 is fixed to the rolling ball 34 inside the rotating body, the locking wheel 35 is rotated 90 degrees inside the rotating seat 33 through the rolling ball 34, and after the second locking plate 32 loses the restriction from the locking wheel 35, it can be rotated from the front of the circuit breaker body 1 through the hinge, so that the circuit breaker body 1 is completely exposed. Since the circuit breaker body 1 and the observation window 2 are not locked by a metal lock, it is avoided that the maintenance personnel repeatedly retrieves the key when maintaining the circuit breaker body 1, thereby saving time for the maintenance of the circuit breaker body 1 and avoiding marking of multiple circuit breaker bodies 1.

[0033] Specifically, Figure 4 and Figure 5 As shown, a shielding component 4 is provided on the right side of the circuit breaker body 1 , and the shielding component 4 includes a slide groove 41 opened on the right side of the circuit breaker body 1 , a slider 42 is slidably connected inside the slide groove 41 , and a protective cover 43 is fixedly connected to the right side of the slider 42 .

[0034] The protective cover 43 is sleeved on the outer side of the rotating seat 33 , and the protective cover 43 extends to an end of the locking wheel 35 away from the rolling ball 34 .

[0035] A limit slot 44 is formed on the right side of the slider 42 , an inclined surface is formed on the upper side of the slider 42 , and a limit pin 45 is slidably connected inside the circuit breaker body 1 .

[0036] The inclined surface on the left side of the limiting latch 45 is pressed and contacted with the inclined surface of the slider 42 after it moves upward, and the limiting groove 44 is clamped with the left end of the limiting latch 45 after it moves upward.

[0037] A fixed seat 46 is fixedly connected to the right side of the circuit breaker body 1, and a movable groove 47 is opened in the fixed seat 46. The movable groove 47 is connected to the slide groove 41, and a limit pin 45 is slidably connected inside the movable groove 47. Two return springs 48 are fixedly connected to the right side of the movable groove 47, and the other ends of the two return springs 48 are fixedly connected to a side of the limit pin 45 close to the return spring 48.

[0038] By adopting the above technical solution, first, before the circuit breaker body 1 and the observation window 2 are unlocked, the protective cover 43 needs to be pushed upward to fully expose the locking wheel 35. During the upward movement of the protective cover 43, the left slider 42 will slide inside the right slide groove 41 of the circuit breaker body 1. When the upper inclined surface of the slider 42 contacts the limit latch 45, it will push it so that the limit latch 45 is pushed into the moving groove 47. As the slider 42 continues to move upward, the limit groove 44 will correspond to the limit latch 45. After the limit latch 45 loses the restriction from the slider 42, the two return springs 48 inside the moving groove 47 will simultaneously The limit pin 45 is pushed so that the limit pin 45 enters the interior of the limit groove 44. At this time, the slider 42 is locked by the limit pin 45, so that the protective cover 43 will also be locked. When the limit pin 45 is pulled and the limit pin 45 is disengaged from the limit groove 44, the protective cover 43 will also move downward according to its own weight and half-wrap the locking wheel 35 again. Since the protective cover 43 wraps the locking wheel 35, the locking wheel 35 cannot rotate around the rotating seat 33 through the ball 34 to prevent the locking wheel 35 from disengaging from the second locking plate 32, thereby preventing non-maintenance personnel from being injured due to accidental touch, thereby improving the safety of the circuit breaker body 1.

[0039] Working principle: First, before the circuit breaker body 1 and the observation window 2 are unlocked, the protective cover 43 is pushed upward. During the upward movement of the protective cover 43, the slider 42 slides inside the slide groove 41, and the upper inclined surface of the slider 42 contacts the limit latch 45 and pushes it, so that the limit latch 45 is pushed into the movable groove 47. As the slider 42 continues to move upward, the two return springs 48 inside the movable groove 47 will simultaneously push the limit latch 45, so that the limit latch 45 enters the inner part of the limit groove 44, so that the protective cover 43 will also be locked. When the locking wheel 35 rotates 180 degrees, the outer semicircular disk of the locking wheel 35 will The first locking plate 31 on the right side of the circuit breaker body 1 and the second locking plate 32 on the right side of the observation window 2 are disengaged from the gap inside, and then the locking wheel 35 is toggled. Since one end of the locking wheel 35 is fixed to the ball 34 inside the rotating body, the locking wheel 35 is rotated ninety degrees inside the rotating seat 33 through the ball 34. After the second locking plate 32 loses the restriction from the locking wheel 35, it can be rotated from the front of the circuit breaker body 1 through the hinge, so that the circuit breaker body 1 is completely exposed. When the limit pin 45 is pulled and the limit pin 45 is disengaged from the limit slot 44, the protective cover 43 will also move downward according to its own weight and half-wrap the locking wheel 35 again.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A circuit breaker device for instantaneous overload state, comprising a circuit breaker body (1) and an observation window (2) hinged to the front of the circuit breaker body (1) by a hinge, characterized in that: The right side of the circuit breaker body (1) and the right side of the observation window (2) are jointly provided with a locking component (3), and the locking component (3) comprises a first locking plate (31) fixedly connected to the right side of the circuit breaker body (1); A second locking plate (32) is fixedly connected to the right side of the observation window (2); the front side of the first locking plate (31) and the back side of the second locking plate (32) overlap each other after rotation; a rotating seat (33) is fixedly connected to the right side of the circuit breaker body (1); a rolling ball (34) is rollingly connected inside the rotating seat (33); a locking wheel (35) is fixedly connected to the outside of the rolling ball (34); an end of the locking wheel (35) close to the rolling ball (34) is rotationally connected to the inside of the rotating seat (33); the locking wheel (35) is inserted into the inside of the first locking plate (31) after rotation; and the locking wheel (35) is inserted into the inside of the second locking plate (32) after rotation.

2. A circuit breaker device for instantaneous overload state according to claim 1, characterized in that: A plurality of semi-circular disks on the outer side of the locking wheel (35) are cross-inserted into the first locking plate (31) and the second locking plate (32); the first locking plate (31) is composed of a plurality of semi-circular disks.

3. A circuit breaker device for instantaneous overload state according to claim 1, characterized in that: The locking wheel (35) is rotated ninety degrees around the rotating seat (33) through the rolling ball (34), and the locking wheel (35) itself is rotated three hundred and sixty degrees through the rolling ball (34).

4. A circuit breaker device for instantaneous overload state according to claim 1, characterized in that: A shielding component (4) is provided on the right side of the circuit breaker body (1), the shielding component (4) comprising a slide groove (41) opened on the right side of the circuit breaker body (1), a slider (42) being slidably connected inside the slide groove (41), and a protective cover (43) being fixedly connected to the right side of the slider (42).

5. A circuit breaker device for instantaneous overload state according to claim 4, characterized in that: The protective cover (43) is sleeved on the outer side of the rotating seat (33), and the protective cover (43) extends to an end of the locking wheel (35) away from the rolling ball (34).

6. A circuit breaker device for instantaneous overload state according to claim 4, characterized in that: A limit slot (44) is provided on the right side of the slider (42), an inclined surface is provided on the upper side of the slider (42), and a limit latch (45) is slidably connected inside the circuit breaker body (1).

7. A circuit breaker device for instantaneous overload state according to claim 6, characterized in that: The inclined surface on the left side of the limiting latch (45) is in compression contact with the inclined surface of the slider (42) after it moves upward, and the limiting groove (44) is clamped with the left end of the limiting latch (45) after it moves upward.

8. A circuit breaker device for instantaneous overload state according to claim 7, characterized in that: A fixing seat (46) is fixedly connected to the right side of the circuit breaker body (1); a movable groove (47) is provided on the fixing seat (46); the movable groove (47) is connected to the slide groove (41); the limit latch (45) is slidably connected inside the movable groove (47); two return springs (48) are fixedly connected to the right side of the movable groove (47); the other ends of the two return springs (48) are fixedly connected to a side of the limit latch (45) close to the return spring (48).

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