KR101777613B1 - Circuit breaker - Google Patents

Abstract

The present invention relates to a small circuit breaker capable of securing an insulation distance between terminals, and in a small circuit breaker including a case and a terminal insulating cover to be coupled with the case, the case is connected to another case A case connecting surface formed on both sides of the case connecting surface, the connecting terminal surface being located inside the case, the case connecting surface and the connecting terminal surface being formed to intersect with each other, the power source side and the load side terminal being connected to the connecting terminal And a screw surface to which the screw is fastened,
Wherein the terminal insulating cover includes a screw cover surface that surrounds the screw surface, a terminal cover surface that intersects the screw cover surface and is spaced apart from the connection terminal surface to surround the connection terminal surface, a screw cover surface, And an insulating barrier formed on a side surface of the cover surface for connecting the case.

Description

CIRCUIT BREAKER

The present invention relates to a miniature short-circuit. More particularly, the present invention relates to a small-sized short-circuit breaker capable of securing an insulation distance between terminals in a short-term short-circuit, and capable of satisfying an insulation distance standard through the same.

Generally, a small short circuit or small circuit breaker may be used to open or close a single-phase 2-wire, domestic commercial AC power circuit with a rated voltage of 220 volts or less, or an industrial commercial AC power circuit with a rated voltage of 300 V or higher, Is an electric device that detects and automatically cuts off the circuit to protect the circuit and the load.

Such a compact car short-term is used as a device that conveniently opens and closes a large number of loads in one place by being built in a high density in the distribution board by switches such as a shopping center, an office, and a department store. In addition, a small-sized short-circuiting machine is used for opening and closing the power of the machine in machine tools and factory facilities. However, since such a small-sized short-circuit is a product used by general users who do not have expert knowledge, safety is particularly required for operation after installation.

In addition, the short term of the small car shall maintain the insulation distance between the terminals. This is because, in the normal use state, the small-sized short-term stays rated and does not generate electric spark or high temperature. However, since it is used out of the rated range in an abnormal state, to be. There are two types of insulation distances for these small car shorts: insulation clearance distance and creepage distance.

First, the creepage distance represents the distance between the two electrodes causing the arc discharge as the shortest distance along the surface of the solid dielectric, and the insulation clearance distance means the shortest distance between the two electrodes causing arc discharge.

In case of an abnormal condition of a small car short-circuit, in order to prevent the spread of accidents and to protect the small-sized car short-term, in UL489 standard related to the insulation distance of a small car short-circuit, when the rated voltage is 300V or more, the clearance distance is 25.4mm and the creepage distance is 50.8mm The insulation distance is specified.

1 is a perspective view showing a conventional case 1 of a small-sized short-circuit. The small-sized short-circuit terminal comprises a case 1, a connecting terminal 2, a case connecting surface 6, and a side wall 5a.

The case (1) is an insulating material for accommodating various devices necessary for a small-sized short-circuit. In addition, the case 1 is formed by overlapping a plurality of small-sized short-circuiting units to form a multi-pole small-sized short-circuiting unit. To this end, a case connecting surface 6 connecting the case and another small-

The connection terminals 2 are provided at both ends of the case 1. One of the connection terminals 2 on both sides is a power input terminal to which power is input and the other is a power output terminal to which the load is connected. The connection terminal 2 is exposed so as to be seen from the outside.

The side wall 5a surrounds both sides of the connection terminal 2 and is arranged horizontally. Further, the connection terminal is protruded by a predetermined length from the case connection surface 6 to cover the connection terminal. This is because the length of the side wall 5a of the side portion is increased to secure a necessary insulation distance.

However, in the small truck shortage, the screw fastening direction 4a and the connection terminal 2 are opened. Accordingly, when the small-sized short-circuit is in the energized state, when the electric wire or the like is connected (attached) to the connection terminal 2 or when a part of the user's body such as a finger touches the small- It is in danger.

Fig. 2 is a perspective view showing a conventional case 1 of a small-vehicle short-circuit type in which the small-sized short-circuiting unit has a case 1, a connection terminal opening 2, a screw fastening portion 4, a handle 7, 8), and latch engagement grooves (9).

As described above, the case 1 is an insulating material for accommodating various devices necessary for a small-sized short-circuit. In addition, a case connecting surface (6) for connecting the case to the other small-sized short-term case is long side.

The connection terminal openings 2 are provided at both side ends of the case 1 and connection terminals are provided inside the connection terminal openings 2 on both sides.

Here, unlike the small-sized short-circuiting machine shown in Fig. 1, the small-sized short-circuiting machine is partially surrounded by the case 1 in which the connection terminal opening 2 is the connection terminal surface 3. Thus, the risk of touching a part of the user's body, such as a finger, is greatly reduced.

A screw for fixing the electric wire or the like is fastened to the screw fastening part 4 after the electric wire or the like is connected (attached) to the connection terminal opening part 2. The screw fastening portion 4 is surrounded by a part of the case 1, which is the screw surface 5, at the upper portion, like the connection terminal opening portion 2. Accordingly, the risk of electric shock due to the user's body contacting with the screw fastening part 4 is also reduced.

The handle 7 is used for manually operating the circuit breaker, and the user opens or closes the circuit inside the circuit breaker by pushing or pulling the handle 7. Further, the handle 7 can be fixedly engaged with each other when the plurality of small-sized cargo shorts are overlapped and connected.

The rivet fastening portion 8 is a circular groove, and a plurality of the rivet fastening portions 8 are provided on the case connecting surface 6. The small-sized short-circuiting unit can be formed as a multi-pole small-sized short-circuiting unit which can connect small-sized short-circuiting units of the same kind to each other and connect the same to a multi-polar power source.

For example, one small-car short-circuit can be used for one-phase power supply (R phase), two small-car shorts can be connected and used for R and N phases, three small- , T, and can be used for power supply of R, S, T, N by connecting four small short-circuit terminals. Therefore, in order to constitute a small-sized shortage which can be used for the above-described multipolar power source, the small-sized short-term ends are overlapped and fixed to the rivet fastening part 8 by rivets.

The latch engagement groove 9 is provided at a lower side of the case connecting surface 6 (opposite to the handle 7). The latch engagement groove 9 is formed in a concave groove shape in which the latch can be fastened. The latch engagement groove 9 is formed in such a manner that a plurality of small-sized short legs are overlapped with the case connecting surface 6, Fix the short period.

FIG. 3 is a perspective view showing a state where two small truck shorts shown in FIG. 2 are connected in a folded manner. Referring to FIG. 3, the coupling between the small truck shorts is achieved by fastening the rivet- (7), and a fastening method in which the latch is inserted into the latch engagement groove (9). Further, by connecting the two small-sized short-circuiting units, a small-sized short-circuiting unit having two poles is completed.

In this case, the creepage distances of the small-sized short-circuiting terminals having two poles are the shortest linear distances calculated along the surface of the case (dielectric) from one connection terminal to the other connection terminal, And the distance between the one connection terminal opening 2a and the other connection terminal opening 2b is not long enough to satisfy the required creepage distance standard.

In general, when a plurality of small-sized short-circuiting units are stacked to have multipole terminals, the voltage applied to the small-sized short-circuiting unit is also increased, and the required space distance and creepage distance become longer as the voltage increases.

However, since the distance between the connection terminal surface 3 and the connection terminal is short and the distance between the screw surface 5 and the screw fastening portion 4 is not long in the small-sized short-term unit, the accident caused by the short- There is a risk that the protection distance against the diffusion prevention is not sufficient and there is a problem that the product is not satisfied with the clearance distance and the creepage distance required by the product standard for foreign small cars.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a small- And a small-sized short-circuit shortened in creepage distance is provided as a technical problem.

According to an aspect of the present invention, there is provided a miniature shorting unit including a case and a terminal insulating cover coupled to the case, the case including: if; A connection terminal surface formed at both ends of the case connection surface and having a connection terminal disposed inside the case; And a screw surface that is formed to intersect the case connection surface and the connection terminal surface and to which a screw connecting the power source side and the load side terminal to the connection terminal is fastened, ; A terminal cover surface intersecting the screw cover surface and spaced apart from the connection terminal surface to surround the connection terminal surface; An insulation barrier formed on a side surface of the cover surface and connecting the screw cover surface and the terminal cover surface to the case; Is provided.

The case connection surface may further include concave stepped surfaces formed concavely at both end sides.

In addition, the insulating barrier wall may be protruded in the same plane as the concave stepped surface.

Further, the screw cover surface is spaced apart from the screw surface.

Here, a hook protrusion for coupling the case to the terminal insulating cover is provided at one of the case or the insulating barrier, and the hook coupling groove for coupling with the hook protrusion may be provided at another location.

In addition, the hook protrusion may be provided inside the insulation barrier wall, and the hook coupling groove may be provided in the case.

According to another aspect of the present invention, there is provided a small-sized shortage including a case and a terminal insulating cover to be coupled with the case, the case comprising: a case connecting surface connected to another case so as to be able to be interviewed; A connection terminal surface formed at both ends of the case connection surface and having a connection terminal disposed inside the case; A screw surface formed to intersect the case connection surface and the connection terminal surface and to which the screw connecting the power source side terminal and the load side terminal to the connection terminal is fastened; And a concave stepped surface formed concavely on both side end surfaces of the case connecting surface, wherein the terminal insulating cover includes: a screw cover surface surrounding the screw surface; A terminal cover surface intersecting the screw cover surface and surrounding the connection terminal surface; And an insulating partition wall connecting the screw cover surface and the terminal cover surface to the case and protruding in the same plane as the concave stepped surface.

In addition, when the terminal insulating cover is coupled to the case, the screw cover surface is in contact with the screw surface, and the terminal cover surface is in contact with the connection terminal surface.

Here, a hook protrusion for coupling the case to the terminal insulating cover is provided at one of the case or the insulating barrier, and the hook coupling groove for coupling with the hook protrusion may be provided at another location.

In addition, the hook protrusion may be provided inside the insulation barrier wall, and the hook coupling groove may be provided in the case.

According to the aspects of the present invention having the above-described configuration, it is possible to prevent a diffusion of fault currents through current-carrying between products by providing sufficient insulation distance and voids through the terminal insulating cover .

In addition, it is possible to minimize the body electric shock through the contact with the connection terminal and the screw fastening portion in a state in which the small-sized short circuit is energized.

Further, the terminal insulating cover coupling of the hook coupling type is realized, so that the assembly between the terminal insulating cover and the case can be facilitated.

1 is a perspective view showing a conventional case of a small-sized car short-term.
2 is a perspective view showing a case of another conventional small-vehicle short-term vehicle.
FIG. 3 is a perspective view showing a state where two small truck shorts shown in FIG. 2 are connected in a folded manner.
4 is a perspective view showing a small-sized short-circuiting machine having a terminal insulating cover according to an embodiment of the present invention.
5 is a perspective view showing a small-sized short-circuiting unit in which two small-sized short-circuiting units shown in FIG.
6 is a perspective view illustrating a case of a small-sized short-circuiting vehicle according to an embodiment of the present invention.
7 is a perspective view illustrating a terminal insulating cover according to an embodiment of the present invention.
8 is a perspective view illustrating a case coupled with a terminal insulating cover according to another embodiment of the present invention.
FIG. 9 is a perspective view illustrating a process of coupling the terminal insulating cover and the case shown in FIG. 8 to each other.
10 is a perspective view showing the terminal insulating cover shown in FIG.

It is noted that the technical terms used herein are used only to describe specific embodiments and are not intended to limit the scope of the technology disclosed herein. Also, the technical terms used herein should be interpreted as being generally understood by those skilled in the art to which the presently disclosed subject matter belongs, unless the context clearly dictates otherwise in this specification, Should not be construed in a broader sense, or interpreted in an oversimplified sense. In addition, when a technical term used in this specification is an erroneous technical term that does not accurately express the concept of the technology disclosed in this specification, it should be understood that technical terms which can be understood by a person skilled in the art are replaced. Also, the general terms used in the present specification should be interpreted in accordance with the predefined or prior context, and should not be construed as being excessively reduced in meaning.

Also, the singular forms "as used herein include plural referents unless the context clearly dictates otherwise. In this specification, the terms "comprising ", or" comprising ", etc. should not be construed as necessarily including the various elements or steps described in the specification, Or may be further comprised of additional components or steps.

Further, in the description of the technology disclosed in this specification, a detailed description of related arts will be omitted if it is determined that the gist of the technology disclosed in this specification may be obscured. It is to be noted that the attached drawings are only for the purpose of easily understanding the concept of the technology disclosed in the present specification, and should not be construed as limiting the spirit of the technology by the attached drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals denote like or similar elements, and redundant description thereof will be omitted.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small-sized short circuit for securing an insulation distance of a multipole terminal. The small-sized short circuit according to the present invention improves the disadvantage of the short insulation distance of the conventional small-sized short-circuit.

Further, the small-sized short circuit according to the present invention improves the disadvantage of the case surrounding the terminal of the conventional small-sized short-term.

For this purpose, the small-sized short circuit according to the present invention can increase the short insulation distance, which is a disadvantage of the conventional small-sized short-circuiting by connecting the terminal insulation cover around the terminal.

In addition, the small-sized short circuit according to the present invention prevents the shortening period distance, which is a disadvantage of the small-sized short-circuiting device provided with the conventional insulation cover, from widening by connecting the terminal insulation cover not protruding in the direction of engaging with other small- It is possible.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 is a perspective view of a small-sized short-circuiting machine incorporating a terminal insulating cover 100 according to an embodiment of the present invention. The small-sized short-circuiting unit includes a case 10, and a terminal insulating cover (100).

The case 10 has a case connecting surface 60 which is connected to another case 10 in an interviewable manner. The case 10 has a handle 70 for opening or closing a circuit inside the small-sized short- A rivet fastening part 80 connecting the rivets so as to connect the small-sized short-circuited parts with each other so as to make small-sized short-circuiting parts, and a rivet fastening part for fastening the small- And a latch engagement groove (90). Although not shown in the drawing, a screw surface 50 forming an external shape of a screw fastening part 40 to which a screw is fastened to the connection terminal, and a connection terminal surface 30 forming an external shape of the connection terminal are provided.

The case 10 is an insulating material for accommodating various devices necessary for a small-sized vehicle. The case 10 is formed by overlapping a plurality of small-sized short-circuiting units to form a multi-pole small-sized short-circuiting unit. To this end, a case connecting surface 60 connecting the case 10 and the case 10 is provided. A concave stepped surface 62 recessed inside the case 10 is formed so that a width of the portion contacting the terminal insulating cover 100 is narrower than a width of the case connecting surface 60. This is a space for the space between the terminal insulating covers 100 when the case 10 and the case 10 are overlapped to be described later.

The concave stepped surface 62 is formed at both ends of the case 10 at a portion where the terminal insulation cover 100 meets the terminal insulation cover 100. The concave stepped surface 62 is flatly connected to the insulating partition wall 106 without a step difference when the terminal insulating cover 100 is coupled.

The connection terminal is located inside the inner case of the connection terminal opening 20 and serves to connect the power supply side or the load side with the small-sized short-circuiting terminal. And the electric wire connected to the connection terminal from the power source side or the load side is connected (connected) to the small-sized short-circuiting unit.

The terminal insulating cover 100 may include a screw cover surface 104 that surrounds the screw surface 50 and a screw cover surface 104 that is spaced apart from the connection terminal surface 30, And an insulating barrier wall 106 formed on a side surface of the cover surface to connect the case cover 10 and the screw cover surface 104 and the terminal cover surface 102 .

The terminal insulating cover 100 is fastened to both sides of the case 10 while covering the connection terminals at both ends of the case 10 and the screw fastening portion 40. The terminal insulating cover 100 is tightened to secure insulation distance and clearance. The connection terminal surface 30 and the screw surface 50 serve to prevent the user's body from contacting the screw fastening portion 40 and the connection terminal. The terminal insulating cover 100 is a cover made of an insulating material.

The terminal cover surface 102 is a surface of the terminal insulating cover 100 that surrounds the connection terminal surface 30 around the connection terminal. However, the terminal cover surface 102 does not contact the connection terminal surface 30. That is, the terminal cover surface 102 is spaced apart from the connection terminal surface 30. The terminal cover surface 102 and the connection terminal surface 30 are connected to an insulation barrier 106. Of course, the terminal cover surface 102 may be formed thick and contact with the connection terminal surface 30.

In the screw fastening part 40, a screw for fastening an electric wire or the like to be connected after the electric wire is connected to the connection terminal is fastened.

The screw cover surface 104 is a surface surrounding the screw fastening portion 40 of the terminal insulating cover 100. The screw cover surface 104 may be spaced apart from the screw surface 50 to secure a clearance between the screw fastening portions 40 and a creepage distance.

The insulating barrier 106 is a surface excluding the screw cover surface 104 and the terminal cover surface 102 of the terminal insulating cover 100. The insulation barrier wall 106 forms a side surface between the screw cover surface 104 and the terminal cover surface 102 and the case 10. This is because there must be no open portion on the side surface in order to satisfy the above-described insulation distance. In addition, a hook protrusion 110 is provided on the inner side of the insulation barrier 106 so that the terminal insulation cover 100 can be connected to the case 10. The hook protrusion 110 will be described later in detail.

5 is a perspective view showing a small-sized short-circuiting unit in which two small-sized short-circuiting units shown in FIG.

Referring to FIG. 4, two small-sized short-circuiting units shown in FIG. 4 are connected to the case connecting surface 60 in parallel. (Not shown) provided on the handle 70 and is fixed to the rivet coupling part 80 by means of a rivet, and a latch (not shown) is inserted into the latch coupling groove 90, So as to be fixed.

Here, the air gap portion 108 is formed between the insulating covers of the two small-sized short-circuited ends where the case connecting surface 60 is butted against each other. The cavity portion 108 is formed by a step formed when the case connecting surface 60 abuts because the concave stepped surface 62 is recessed inside the case 10. For example, the concave stepped portion may have a concave distance of about 5 mm from the case connecting surface. In this case, since the two small-sized short-term ends are coupled, the gap portion 108 can be formed at a distance of about 1 cm. Further, since the air gap portion 108 serves to increase the insulation distance, a sufficient insulation distance can be obtained even if a small-sized short-circuiting terminal having a plurality of terminals is formed.

FIG. 6 is a perspective view showing a case 10 of a small-sized short-term vehicle according to an embodiment of the present invention.

The case shown in this drawing is the same case 10 as the above-described case 10 and shows a state before it is combined with the terminal insulating cover 100. [

In the following description, the side where the handle 70 is provided in the case 10 is defined as the upper side, the side provided with the latch engagement groove 90 is defined as the lower side, and the side facing the connection terminal And the case connecting surface 60 is defined as a side surface.

The case 10 is formed at both ends of the case connection surface 60 and includes a connection terminal surface 30 in which connection terminals are disposed inside the case 10, a case connection surface 60, And a screw surface 50 to which a screw connecting the power source side and the load side terminal to the connection terminal is fastened.

The screw surface 50 is a part of the case 10 and is engaged with the hook protrusion 110 provided on the terminal insulating cover 100 to be described later on the handle side portion of the screw surface 50, And an upper hook coupling groove 114a for coupling the insulating cover 100 to the main body.

The connection terminal surface 30 is a surface formed at both ends of the case 10 and surrounding the connection terminal disposed inside the case 10. [ An auxiliary terminal opening 20a is formed at an upper side of the connection terminal surface 30 and an auxiliary terminal opening 20a is formed at the lower end of the auxiliary terminal opening 20a. A side hook connecting groove 114b is formed on a side surface of the connecting terminal surface 30 to receive the hook protrusion 110 of the terminal insulating cover 100 to be hooked. Also, a lower hook coupling groove 114c is formed in the lower part of the connection terminal face 30 as well.

The hook coupling groove 114 includes an upper hook coupling groove 114a provided on the screw surface 50, a side hook coupling groove 114b provided on a side surface of the coupling terminal surface 30, And a lower hook coupling groove 114c provided at a lower portion of the case 10 so that the hook protrusion 110 can be engaged with the hook coupling groove 114. In this case, to be. In addition, the side hook engagement grooves 114b are provided at two positions on both sides of the connection terminal surface 30. [

7 is a perspective view showing a terminal insulating cover 100 according to an embodiment of the present invention. Referring to FIG. 2, the terminal insulating cover 100 includes a screw cover surface (not shown) for surrounding the screw surface 50, A terminal cover surface 102 which intersects the screw cover surface 104 and is spaced apart from the connection terminal surface 30 so as to surround the connection terminal surface 30; And an insulation barrier wall 106 connecting the terminal cover surface 102 and the case 10 and formed on a side surface of the cover surface.

The screw cover surface 104 is provided with a circular screw opening 104a through which the screw to be inserted into the screw coupling part 40 passes. The upper hook coupling groove 114a and the upper hook coupling groove 114b are formed around the screw opening 104a. And an upper hook protrusion 110a is provided. In addition, insulating interlayer wall upper wings 106b are formed on both sides of the screw cover face 104 to form the side between the screw face 50 and the screw cover face 104.

A cover auxiliary terminal opening 112a through which an auxiliary terminal can pass is provided in the terminal cover surface 102 near the screw cover surface 104. A cover connection terminal opening (112b).

Both the openings are provided in a square shape corresponding to the size of the auxiliary terminal opening 20a and the connection terminal opening 10 provided in the case 10. An insulation barrier 106 is formed between the terminal cover surface 102 and the connection terminal surface 30 to form a side surface. The insulation barrier side wall 106a is provided on both sides of the lower side of the isolation barrier wall 106 such that the insulation barrier wall 106 protrudes longer. A lower hook protrusion 110c is formed at a lower portion of the cover connection terminal opening 112b to engage with the lower hook coupling groove 114c.

The insulating side wall side wing 106a provides a side surface between the connection terminal surface 30 and the terminal cover surface 102 so that the terminal insulation cover 100 can not flow sideways. Further, the terminal insulating cover 100 and the case 10 can be easily combined and separated. In addition, a side hook protrusion 110b, which is engaged with the side hook coupling groove 114b, is provided on an upper side of the insulating side wall side wing 106a.

However, the hook protrusion 110 may be provided in the case 10, and the hook coupling groove 114 may be provided inside the insulation barrier wall 106.

8 is a perspective view showing a case 10 coupled with a terminal insulating cover 200 according to another embodiment of the present invention.

The case 10 has a case connecting surface 60 which is connected to the other case so as to be able to be interviewed and a connecting terminal 60 which is formed at both ends of the case connecting surface 60, A screw surface 50 which is formed to intersect the connection terminal surface 30, the case connection surface 60 and the connection terminal surface 30 to be disposed and to which the screw connecting the power source side and the load side terminal to the connection terminal is fastened, And a concave stepped surface 62 formed concavely at both end surfaces of the case connecting surface 60. [

The terminal insulating cover 200 includes a screw cover surface 204 surrounding the screw surface 50 and a terminal cover surface 204 crossing the screw cover surface 204 and surrounding the connection terminal surface 30 And an insulation barrier 206 connecting the screw cover surface 204 and the terminal cover surface 202 to the case 10 and protruding in the same plane as the concave stepped surface 62.

Here, when the terminal insulating cover 200 is coupled to the case 10, the screw cover surface 204 contacts the screw surface 50, and the terminal cover surface 202 contacts the connection terminal surface 30).

That is, unlike the case where the terminal cover surface 202 of the terminal insulating cover 200 of the previous embodiment is disposed apart from the connection terminal surface 30, in the present embodiment, the terminal cover surface 202 is disposed on the connection terminal surface 30). Accordingly, the insulation barrier 206 is protruded outwardly from the terminal cover surface 202 in order to secure a sufficient insulation distance. In addition, the insulating barrier-wall upper wings 206b are protruded outwardly from the screw cover surface 204 on both sides of the screw cover surface 204. [

When the terminal insulating cover 200 has a small space between the terminal cover surface 202 and the connection terminal surface 30, when the electric wire or the like is attached to the connection terminal or the screw is fastened to the screw fastening part 40 Convenience can be provided.

However, a slight space may be provided between the terminal cover surface 202 and the connection terminal surface 30 and between the screw cover surface 204 and the screw surface 50. This is to make it easier to attach the terminal insulating cover 200 to the case 10.

In addition, the insulation barrier wall 206 is formed on the same plane as the concave stepped surface 62. That is, when the terminal insulating cover 200 is coupled to the case 10, the insulating barrier 206 protrudes or is not concave in the lateral direction of the case 10 (direction of the case connecting surface 60) And is coupled with the concave stepped surface 62 in the same plane.

9 is a perspective view illustrating a process of coupling the terminal insulating cover 200 and the case 10 shown in FIG.

The screw cover surface 204 is in contact with the screw surface 50 and the terminal insulating cover 200 is in contact with the case 10, When the connection to the case 10 is completed, the terminal cover surface 202 is brought into contact with the connection terminal surface 30.

Here, the hook protrusion 110 and the hook coupling groove 114 are provided in the same position and structure as those of the previous embodiment. That is, the hook protrusion 110 is provided inside the insulation barrier 206, and the hook coupling groove 114 is provided in the case 10.

The case 10 may be provided with a hook protrusion 110 and a hook coupling groove 114 may be provided inside the insulation barrier 206.

10 is a perspective view showing the terminal insulating cover 200 shown in FIG.

The screw cover surface 204 is provided at the lower end of the insulating barrier 206. That is, unlike the previous embodiment, the insulating barrier wall upper vane 206b protrudes to the upper side of the screw cover surface 204. The screw cover surface 204 is provided with a screw opening, and the screw cover surface 204 is provided with a hook protrusion 110.

The terminal cover surface 202 is also provided at the inner end of the insulation barrier 206. In addition, the insulation barrier side surface vane 206a is formed on the opposite side of the insulation barrier wall 206 from the terminal cover surface 202. That is, unlike the previous embodiment, which is provided at the outer end of the insulation barrier 206, the terminal cover surface 202 in this embodiment is provided at a portion where the insulation barrier side-surface side wing 206a starts to protrude.

The terminal cover surface 202 is provided with a cover upper opening 212a for forming the hook protrusion 110, a cover auxiliary terminal opening 212b for connecting a power line to the auxiliary terminal, A cover connection terminal opening 212c is provided. Here, the cover upper opening portion 212a is opened for the purpose of forming the hook projection portion 110 on the screw cover surface 204 by using a metal or the like.

The other configuration of the terminal cover surface 202 is the same as the above-described embodiment.

Although the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the appended claims and equivalents thereof.

10: Case 20: Connection terminal opening
20a: auxiliary terminal opening 30: connection terminal face
40: screw fastening part 50: screw face
60: Case connecting surface 62: Concave surface surface
70: handle 80: rivet fastening part
90: latch fastening groove 100, 200: terminal insulating cover
102, 202: terminal cover surface 104, 204: screw cover surface
104a: screw opening 106, 206: insulating barrier
106a, 206a: insulating side wall side wings 106b, 206b:
108: air gap portion 110: hook protrusion
110a: Upper hook protrusion 110b: Side hook protrusion
110c: Lower hook protrusion 112a, 212b: Cover auxiliary terminal opening
112b, 212c: cover connection terminal opening 114: hook coupling groove
114a: upper hook coupling groove 114b: side hook coupling groove
114c: Lower hook engaging groove 212a: Cover upper opening

Claims (8)

Case, and
And a terminal insulating cover that engages with the case,
In this case,
A case connecting surface connected to the other case in an interviewable manner;
A connection terminal surface formed at both ends of the case connection surface and surrounding a connection terminal disposed inside the case and having a connection terminal opening for connection with the connection terminal; And
And a screw surface formed to intersect the case connection surface and the connection terminal surface and having a screw fastening portion for fastening a screw for connecting the power source side terminal and the load side terminal to the connection terminal,
The terminal insulation cover
A screw cover face surrounding the screw face and having a screw opening corresponding to the screw fastening portion;
A terminal cover surface intersecting with the screw cover surface to surround the connection terminal surface and having a cover connection terminal opening corresponding to the connection terminal opening; And
And an insulation barrier wall connecting the screw cover surface and the terminal cover surface to the case. 2. The apparatus according to claim 1, wherein the case connecting surface
And a concave stepped surface formed concavely in both end surfaces. 3. The apparatus of claim 2,
And the protrusion is formed in the same plane as the concave stepped surface. The method according to claim 1,
Wherein the screw cover surface is spaced apart from the screw surface. 5. The method according to any one of claims 1 to 4,
And a hook protruding portion for engaging the case and the terminal insulating cover is provided at one of the case or the insulating barrier, and a hook coupling groove for coupling the hook protruding portion to the other portion is provided. The method according to claim 1,
Wherein the terminal cover surface is spaced apart from the connection terminal surface. The semiconductor device according to claim 1,
And an insulating interlayer wall side wing protruding from the insulation barrier wall toward the case connection face side and connected to a side portion of the connection terminal face. The semiconductor device according to claim 1,
An insulation barrier side surface blade protruding from the terminal cover surface to the opposite side of the case connection surface in the insulation barrier; And
And an upper portion of the insulation barrier wall protruding from the screw cover surface from the insulation barrier wall to the opposite side of the case connection surface.

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