CN214313071U - Isolation structure of leakage circuit breaker - Google Patents

Abstract

An isolation structure of an electric leakage circuit breaker comprises a circuit breaker unit, an electric leakage protection unit and an isolation cover for shielding a connecting wire between the circuit breaker unit and the electric leakage protection unit, wherein the electric leakage protection unit is provided with a wiring cover matched with the isolation cover, the circuit breaker unit and the electric leakage protection unit are arranged side by side, the wiring cover is convexly arranged on one side of the electric leakage protection unit, the isolation cover comprises a protection part for shielding the circuit breaker unit and an insertion part arranged at one end of the protection part, the insertion part can be inserted into the wiring cover, a bulge structure in interference fit with the wiring cover is arranged on the insertion part, the length direction of the bulge structure is parallel to the direction in which the insertion part is inserted into the wiring cover, the height of the bulge structure is gradually reduced along the direction close to the wiring cover to form an obliquely arranged leading-in surface, the use of a self-tapping screw is reduced through the bulge structure in interference fit, and the production process is simplified and complicated, and the assembly difficulty is reduced by the guide-in surface which is obliquely arranged.

Description

Isolation structure of leakage circuit breaker

Technical Field

The utility model relates to a low-voltage apparatus field especially relates to an isolating structure of leakage circuit breaker.

Background

The earth leakage circuit breaker is often used for controlling and protecting a circuit, particularly for earth leakage protection, but a lead is exposed outside after wiring, so that potential safety hazards are easily caused, and protection is needed. However, the conventional isolation shield is usually mounted by self-tapping screws, so that the production process is complicated, and the production and manufacturing cost is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect, provide an isolation structure of electric leakage circuit breaker that the assembly is simple, with low costs.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an isolation structure of earth leakage circuit breaker, includes circuit breaker unit and earth leakage protection unit to and be used for sheltering from the cage of connecting wire between circuit breaker unit and the earth leakage protection unit, the earth leakage protection unit be equipped with cage complex connection cover, circuit breaker unit and earth leakage protection unit set up side by side, earth leakage protection unit one side is located in the connection cover protrusion, the cage is including the protection portion that is used for sheltering from the circuit breaker unit to and set up the portion of inserting in protection portion one end, the portion of inserting can insert the connection cover, be equipped with in the portion of inserting with connection cover interference fit's protruding structure, the length direction of protruding structure is parallel with the direction that the portion of inserting inserted the connection cover, the leading-in face that highly reducing gradually along the direction that is close to the connection cover that forms the slope and set up of protruding structure.

Preferably, the protruding structure comprises a limiting convex rib arranged on the outer side of the isolation cover.

Preferably, the protruding structure includes the spacing boss that forms by the cage to the outside arch, be equipped with on the connection terminal with spacing boss complex spacing recess.

Preferably, the cage includes relative overhead gage and lower baffle that sets up to and connect the preceding baffle between overhead gage and lower baffle one side, the opposite side of overhead gage and lower baffle cooperates with the circuit breaker unit respectively, protruding structure set up in the front on the baffle.

Preferably, the protruding structure comprises a limiting boss and two limiting convex ribs, the limiting boss is arranged on the side edge of one side of the front baffle, one limiting convex rib is arranged on the limiting boss, and the other limiting convex rib is arranged on the side edge of the other side of the front baffle.

Preferably, one end of the front baffle, one end of the upper baffle and one end of the lower baffle are connected with each other through the side baffle to form the protection part, the other ends of the front baffle, the upper baffle and the lower baffle are respectively contracted inwards to form a contraction groove and form the insertion part, the protrusion structure is arranged in the contraction groove of the front baffle, and the height of the protrusion structure is smaller than the depth of the contraction groove.

Preferably, the upper baffle and the lower baffle are respectively provided with a limiting clamping groove, the length direction of the limiting clamping groove is perpendicular to the direction in which the insertion part is inserted into the wiring cover, and a limiting strip which is matched with the limiting clamping grooves on the upper baffle and the lower baffle is arranged in the wiring cover.

Preferably, the isolation cover is further provided with a hook structure matched with the shell of the circuit breaker unit.

Preferably, baffle forms the adjustment recess to the inboard arch of cage down, and the adjustment recess is including setting up the interior cell wall in the cage inboard to and two side channel walls of connecting respectively between interior cell wall both sides side and lower baffle, the one end and the side shield of interior cell wall are connected, and the other end of interior cell wall stretches out the cage and is equipped with first couple, and the wiring groove that is used for cooperating binding post on first couple and the circuit breaker unit corresponds.

Preferably, a support rod is arranged in the isolation cover, one end of the support rod is connected with the front baffle, the other end of the support rod extends out of the isolation cover and is provided with a second hook, and a hook groove matched with the second hook is formed in the shell of the circuit breaker unit.

The utility model discloses an isolation structure of residual current circuit breaker, through set up on the shield with earth leakage protection unit interference fit's protruding structure, can reduce self-tapping screw's use, can simplify the production processes loaded down with trivial details to reduction in production manufacturing cost, the leading-in face that the top side of protruding structure formed the slope and set up moreover is convenient for insert the wiring cover with protruding structure, can further reduce the degree of difficulty of assembly.

Drawings

Fig. 1 is a plan view of an earth leakage circuit breaker according to an embodiment of the present invention;

fig. 2 is a front view of the residual current circuit breaker according to the embodiment of the present invention;

fig. 3 is a schematic structural diagram of an earth leakage protection unit according to an embodiment of the present invention;

fig. 4 is another schematic structural diagram of the leakage protection unit according to the embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a shielding case according to an embodiment of the present invention;

FIG. 6 is another schematic structural view of a shield according to an embodiment of the present invention;

FIG. 7 is a schematic view of another embodiment of the present invention;

fig. 8 is a partial enlarged view of the embodiment of the present invention shown in fig. 7;

fig. 9 is a front view of a circuit breaker unit according to an embodiment of the present invention;

figure 10 is a cross-sectional view of a cage according to an embodiment of the present invention;

fig. 11 is a cross-sectional view of the embodiment of the present invention, which is perpendicular to the direction of fig. 10.

Detailed Description

As shown in fig. 1 to 8, the isolation structure of an earth leakage circuit breaker of the present invention comprises a circuit breaker unit 100 and an earth leakage protection unit 200, and a shielding case 400 for shielding a connection wire between the circuit breaker unit 100 and the earth leakage protection unit 200, the earth leakage protection unit 200 is provided with a connection cover 300 engaged with the shielding case 400, the circuit breaker unit 100 and the earth leakage protection unit 200 are arranged side by side, the connection cover 300 is protrudingly provided at one side of the earth leakage protection unit 200 with respect to the circuit breaker unit 100, the shielding case 400 comprises a shielding portion for shielding the circuit breaker unit 100, and an insertion portion provided at one end of the shielding portion, the insertion portion can be inserted into the connection cover 300, a protrusion structure 500 interference-fitted with the connection cover 300 is provided on the insertion portion, a length direction of the protrusion structure 500 is arranged in parallel to a direction in which the insertion portion is inserted into the connection cover 300, a height of the protrusion structure 500 is gradually reduced along a direction close to the connection cover 300, an obliquely arranged lead-in surface 50 is formed.

The utility model discloses an isolation structure of residual current circuit breaker, through set up on the shield with 200 interference fit's of earth leakage protection unit protruding structure 500, can reduce self-tapping screw's use, can simplify the production processes loaded down with trivial details to reduction in production manufacturing cost, the top side of protruding structure 500 forms the leading-in face 50 that the slope set up moreover, is convenient for insert wiring cover 300 with protruding structure 500, can further reduce the degree of difficulty of assembly.

As shown in fig. 1-8, the utility model discloses an isolation structure of residual current circuit breaker, through protruding structure 500 and earth leakage protection unit 200 interference fit through cage 400, can reduce the use of screw, reduce the production degree of difficulty and manufacturing cost.

The following describes the isolation structure of the residual current circuit breaker according to the present invention with reference to the embodiments shown in fig. 1 to 11. The isolation structure of the residual current circuit breaker of the present invention is not limited to the description of the following embodiments.

The utility model discloses an isolation structure of residual current circuit breaker, including circuit breaker unit 100 and earth leakage protection unit 200, and be used for sheltering from the cage 400 of connecting wire between circuit breaker unit 100 and the earth leakage protection unit 200, earth leakage protection unit 200 is equipped with and shields 400 complex connection cover 300, earth leakage protection unit 200 one side is located in connection cover 300 protrusion, circuit breaker unit 100 and earth leakage protection unit 200 set up side by side, connection cover 300 protrusion is located one side that circuit breaker unit 100 and earth leakage protection unit 200 are equipped with connecting wire, isolation cover 400 is including the protection portion that is used for sheltering from circuit breaker unit 100, and the portion of inserting of setting in protection portion one end, the portion of inserting can insert connection cover 300, be equipped with the protruding structure 500 with connection cover 300 interference fit in the portion of inserting, the length direction of protruding structure 500 and the direction parallel arrangement that the portion of inserting cover 300 insert, protruding structure 500 highly reduces gradually along the direction that is close to connection cover 300 and forms leading-in face 50 that the slope set up .

As shown in fig. 3-4, the wire connection cover 300 includes a frame having a U-shaped structure, the frame includes an upper side plate 310 and a lower side plate 330 which are oppositely disposed, and a front side plate 320 connected between one side edges of the upper side plate 310 and the lower side plate 330.

Referring to fig. 5-7, the isolation cover 400 is of a U-shaped structure and is matched with a U-shaped sidewall of the wiring cover 300, the isolation cover 400 is used for shielding a wire (not shown in the figure) passing through the wiring cover 300 on the circuit breaker unit 100, the isolation cover 400 includes an upper baffle 410 and a lower baffle 430 which are oppositely arranged, and a front baffle 420 connected between one sides of the upper baffle 410 and the lower baffle 430, the other sides of the upper baffle 410 and the lower baffle 430 are respectively matched with the circuit breaker unit 100, the protrusion structure 500 is arranged on the front baffle 420 and matched with the front side plate 320, a plurality of heat dissipation holes are arranged on the front baffle 420, and when the protrusion structure 500 is contacted with the front side plate 320, the other sides of the upper baffle 410 and the lower baffle 430 are pushed to be respectively pressed on the circuit breaker unit 100 to realize interference fit.

Further, the protruding structure 500 includes a limiting boss 510 formed by protruding the front baffle 420 to the outside of the isolation cover 400, and the front side of the wire connection cover 300 protrudes to the outside to form a limiting groove 340 matched with the limiting boss 510.

Further, protruding structure 500 is including setting up baffle 420 outside and preceding curb plate 320 complex spacing protruding muscle 520 in the front, and spacing protruding muscle 520 can directly set up in the front on baffle 420, also can set up in the front on baffle 420's spacing boss 510, and this embodiment includes a spacing boss 510 and two spacing protruding muscle 520, and spacing boss 510 sets up the side in baffle 420 one side in the front, and a spacing protruding muscle 520 sets up on spacing boss 510, and another spacing protruding muscle 520 sets up on baffle 420's the opposite side in the front. Through set up spacing protruding muscle 520 respectively in the front on baffle 420 and spacing boss 510, the balance of baffle 420 both sides side before can improving can improve interference fit's effect.

Further, the one end of preceding baffle 420, last baffle 410 and lower baffle 430 link to each other and constitute through side shield 440 the guard portion, the other end of preceding baffle 420, last baffle 410 and lower baffle 430 contracts respectively to the cage 400 inboard and forms shrink groove 450 and constitute the portion of inserting, protruding structure 500 set up in the shrink groove 450 of preceding baffle 420, and protruding structure 500 highly be less than the degree of depth of shrink groove 450, protruding structure 500 of this embodiment includes spacing protruding muscle 520, and the height of spacing protruding muscle 520 is less than the degree of depth of shrink groove 450. It can be understood that the limiting bosses 510 of the present embodiment are disposed on the protection portion and the insertion portion, and the limiting bosses 510 may also be disposed only on the insertion portion, and the limiting bosses 510 are no longer disposed on the protection portion. In addition, the cross section of the limiting convex rib 520 of the present embodiment is triangular, the length direction of the limiting convex rib 520 is parallel to the direction in which the insertion portion is inserted into the leakage protection unit 200, the height of the limiting convex rib 520 is gradually reduced along the direction close to the leakage protection unit 200, and the guiding surface 50 which is obliquely arranged is formed on the limiting convex rib 520.

It can be understood that only the limiting boss 510 or only the limiting rib 520 may be provided, when only the limiting rib 520 is provided, the limiting rib 520 is directly provided on the front baffle 420, and when only the limiting boss 510 is provided, the limiting bosses 510 may be provided one on each of the side edges of the two sides. In addition, the guiding surface 50 may also be formed on the limiting boss 510, all belonging to the protection scope of the present invention.

Furthermore, the upper baffle 410 and the lower baffle 430 are respectively provided with a limiting clamping groove 530, the length direction of the limiting clamping groove 530 is perpendicular to the direction in which the insertion portion is inserted into the wire connection cover 300, and the upper side plate 310 and the lower side plate 330 of the wire connection cover 300 are respectively provided with a limiting strip 540 matched with the limiting clamping groove 530. Preferably, the cross section of the limiting clamping groove 530 is in a V shape, the cross section of the limiting strip 540 is in a triangular shape, the side surface of the triangular shape is inclined, the limiting clamping groove 530 can be clamped conveniently, and the assembling difficulty is reduced.

Referring to fig. 6, the isolation cover 400 is further provided with a hook structure matched with the housing of the circuit breaker unit 100, the isolation cover 400 is in clamping fit with the circuit breaker unit 100, and since the length of the isolation cover 400 is changed according to the width and the number of poles of the circuit breaker unit 100, when the width and the number of poles of the circuit breaker unit 100 are increased, the isolation cover 400 is connected with the circuit breaker unit 100 through the hook structure and can be more reliable.

Referring to fig. 6 and 9 to 10, the hooking structure includes the first hook 610 provided on the lower barrier 430, and by providing the first hook 610 on the lower barrier 430, the shield 400 does not need to additionally provide a structure for coupling and supporting the first hook 610.

Further, the lower baffle 430 protrudes towards the inner side of the isolation cover 400 to form an adjusting groove 611, the first hook 610 is arranged on the adjusting groove and corresponds to the wiring groove 612 of the circuit breaker unit 100, which is used for being matched with the wiring terminal, the lower baffle 430 protrudes towards the inner side of the isolation cover 400 to form the adjusting groove 611, so that the first hook 610 can correspond to the wiring groove 612 of the circuit breaker unit 100, which is used for being matched with the wiring terminal, particularly when the distance is long, the groove which is separately arranged for supporting the first hook 610 may not be contacted with the lower baffle 430, and the case of the circuit breaker unit 100 does not need to be additionally processed with the groove for being connected with the first hook 610.

Specifically, the adjusting groove 611 includes an inner groove wall 611a disposed inside the isolation cover 400, and two side groove walls 611b connected between the two side edges of the inner groove wall 611a and the lower baffle 430, respectively, one end of the inner groove wall 611a is connected to the side baffle 440, the other end of the inner groove wall 611a is provided with an extension arm 611c extending out of the isolation cover 400, a first hook 610 is disposed on the end 611a, the first hook 610 includes a first engaging surface 610a disposed near one side of the extension arm 611c, and first limiting surfaces 610b disposed at two opposite sides, the wiring groove 612 is rectangular, and includes two side wiring walls 612a disposed horizontally and oppositely, an upper wiring wall 612b connected between the top ends of the two side wiring walls 612a, and a lower wiring wall 612c connected between the bottom ends of the two side wiring walls 612a, the isolation cover 400 can drive the first hook 610 to be engaged in the wiring groove 612 through the extension arm 611c, the first engaging surface 610a of the first hook 610 is in limit fit with the lower wiring wall 612c of the wiring groove 612, and the first limit surfaces 610b on both sides of the first hook 610 are in limit fit with the two side wiring walls 612a of the wiring groove 612, respectively, so that the shield 400 can be fixed to the case of the circuit breaker unit 100 by the first hook 610.

Referring to fig. 6, 9 and 11, the hook structure further includes a second hook 620 disposed on the front barrier 420, and the second hook 620 is engaged with a hook groove 621 formed on the case of the circuit breaker unit 100.

Specifically, be equipped with bracing piece 622 in the cage 400, the one end of bracing piece 622 is connected with preceding baffle 420, and the other end of bracing piece 622 stretches out cage 400 and is provided with second couple 620, and second couple 620 is including setting up the second clamping surface 620a near bracing piece 622 one side to and set up the spacing face 620b of second clamping surface 620a both sides relatively, couple groove 621 includes upper hook wall 621a and lower hook wall 621c that relative set up from top to bottom, and connects the side hook wall 621b between upper hook wall 621a and lower hook wall 621c one end, the spacing cooperation of second clamping surface 620a of second couple 620 and the side hook wall 621b of couple groove 621, the spacing face 620b of second couple 620 both sides respectively with the upper hook wall 621a and the lower hook wall 621c spacing cooperation of couple groove 621.

Preferably, the side surface of the supporting rod 622 is connected to the inner side of the upper baffle 410, so that the supporting rod 622 and the upper baffle 410 are mutually supported, the strength of the supporting rod 622 and the upper baffle 410 can be improved, and the risk of damage can be reduced.

Preferably, the hook groove 621 is the structure of the existing circuit breaker unit 100, and the hook groove 621 is disposed on each of the two sides of each circuit breaker, so that the groove matched with the second hook 620 does not need to be additionally processed, and the second hook 620 is disposed in the middle of the isolation cover 400 and does not match with the hook groove 621 on the outermost side, thereby ensuring the overall balance of the isolation cover 400 after being connected with the circuit breaker casing. When the pole number of the breaker unit 100 is 2P, 3P, or 4P, the shield 400 is connected to the case of the breaker unit 100 through the first hook 610 and the second hook 620, and when the pole number of the breaker unit 100 is 1P, the shield 400 is connected to the case of the breaker unit 100 only through the first hook 610.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims (10)

1. The utility model provides an isolation structure of residual current circuit breaker, includes circuit breaker unit (100) and earth leakage protection unit (200) to and be used for sheltering from cage (400) of connecting wire between circuit breaker unit (100) and earth leakage protection unit (200), earth leakage protection unit (200) are equipped with and keep apart cage (400) complex connection hood (300), circuit breaker unit (100) and earth leakage protection unit (200) set up side by side, earth leakage protection unit (200) one side is located in connection hood (300) protrusion, its characterized in that: the isolation cover (400) comprises a protection portion used for shielding the circuit breaker unit (100) and an insertion portion arranged at one end of the protection portion, the insertion portion can be inserted into the wiring cover (300), a protruding structure (500) in interference fit with the wiring cover (300) is arranged on the insertion portion, the length direction of the protruding structure (500) is parallel to the direction in which the insertion portion is inserted into the wiring cover (300), and the height of the protruding structure (500) is gradually reduced along the direction close to the wiring cover (300) to form an inclined leading-in surface (50).

2. An isolating structure of a residual current circuit breaker as claimed in claim 1, wherein: the protruding structure (500) comprises a limiting convex rib (520) arranged on the outer side of the isolation cover (400).

3. An isolating structure of a residual current circuit breaker as claimed in claim 1, wherein: protruding structure (500) include spacing boss (510) that form to the outside arch by cage (400), be equipped with on connection hood (300) with spacing boss (510) complex spacing recess (340).

4. An isolating structure of a residual current circuit breaker according to any one of claims 1 to 3, characterized in that: the isolation hood (400) comprises an upper baffle (410) and a lower baffle (430) which are arranged oppositely, and a front baffle (420) connected between the upper baffle (410) and one side of the lower baffle (430), the other sides of the upper baffle (410) and the lower baffle (430) are respectively matched with the circuit breaker unit (100), and the protruding structure (500) is arranged on the front baffle (420).

5. An isolating structure of a residual current circuit breaker as claimed in claim 4, wherein: protruding structure (500) include one spacing boss (510) and two spacing protruding muscle (520), and spacing boss (510) set up the side in baffle (420) one side in the front, and one spacing protruding muscle (520) set up on spacing boss (510), and another spacing protruding muscle (520) set up on the opposite side of baffle (420) in the front.

6. An isolating structure of a residual current circuit breaker as claimed in claim 4, wherein: preceding baffle (420), last baffle (410) and the one end of baffle (430) down link to each other and constitute through side shield (440) the guard portion, preceding baffle (420), go up baffle (410) and the other end of baffle (430) down separate the cover (400) respectively and contract to the inboard and form shrink groove (450) and constitute the portion of inserting, protruding structure (500) set up in the shrink groove (450) of preceding baffle (420), and the height of protruding structure (500) is less than the degree of depth of shrink groove (450).

7. An isolating structure of a residual current circuit breaker as claimed in claim 4, wherein: the wiring cover is characterized in that the upper baffle (410) and the lower baffle (430) are respectively provided with a limiting clamping groove (530), the length direction of the limiting clamping groove (530) is perpendicular to the direction in which the insertion part is inserted into the wiring cover (300), and a limiting strip (540) which is respectively matched with the upper baffle (410) and the lower baffle (430) and is arranged in the wiring cover (300) is arranged on the limiting clamping groove (530).

8. An isolating structure of a residual current circuit breaker as claimed in claim 4, wherein: and a hook structure matched with the shell of the circuit breaker unit (100) is further arranged on the isolation cover (400).

9. An isolating structure of a residual current circuit breaker as claimed in claim 8, wherein: the lower baffle (430) protrudes towards the inner side of the isolation cover (400) to form an adjusting groove (611), the adjusting groove (611) comprises an inner groove wall (611a) arranged at the inner side of the isolation cover (400) and two side groove walls (611b) respectively connected between the two side edges of the inner groove wall (611a) and the lower baffle (430), one end of the inner groove wall (611a) is connected with the side baffle (440), the other end of the inner groove wall (611a) extends out of the isolation cover (400) and is provided with a first hook (610), and the first hook (610) corresponds to a wiring groove (612) which is used for being matched with a wiring terminal on the circuit breaker unit (100).

10. An isolating structure of a residual current circuit breaker as claimed in claim 8, wherein: be equipped with bracing piece (622) in cage (400), the one end and the preceding baffle (420) of bracing piece (622) are connected, and the other end of bracing piece (622) stretches out cage (400) and is provided with second couple (620), is equipped with on the casing of circuit breaker unit (100) with second couple (620) complex couple groove (621).

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