External operating handle assembly for molded case circuit breaker

Abstract

Disclosed is an external operating handle assembly of a molded case circuit breaker. The external operating handle assembly of the molded case circuit breaker prevents an accident in advance by making a panel door unable to be opened when current flows in the molded case circuit breaker. An example of the external operating handle assembly of the molded case circuit breaker according to the present invention includes an external operating handle and a detent portion. The external operating handle is combined with the molded case circuit breaker. The detent portion is combined with the panel door and is in contact with a locking portion of the external operating handle. In a normal state in which current flows in the molded case circuit breaker, the locking portion is moved in a direction and is in contact with the detent portion.

Description

Technical Field

[0001] This invention relates to an external operating handle assembly for use with a molded case circuit breaker. Background Technology

[0002] A molded case circuit breaker (MCCB) is a type of circuit breaker that disconnects energized electrical equipment in the event of abnormal currents such as leakage or overcurrent to prevent electrical accidents.

[0003] A standard molded case circuit breaker consists of fixed contacts and movable contacts. During normal operation, when a non-abnormal current (fault current) is flowing, the fixed and movable contacts are in contact, allowing energization to proceed. If an abnormal current occurs, the fixed and movable contacts separate, thus disconnecting the circuit.

[0004] Molded case circuit breakers are mainly installed in distribution panels or external boxes. Even when the panel door is closed, users can use the external operating handle to check and operate the status (On, Off, Trip) of the molded case circuit breaker.

[0005] When the molded case circuit breaker is energized, the locking part of the external operating handle protrudes outward from the case and interferes with the panel door (specifically, the door plate located on the inner side of the panel door), thereby preventing the panel door from being opened.

[0006] Furthermore, when there is no current flowing in the molded case circuit breaker, the locking part enters the interior of the housing and does not interfere with the panel door, so the door can be opened.

[0007] By using an external operating handle, the panel door cannot be opened while the molded case circuit breaker is energized, thereby preventing potential accidents for the user.

[0008] Existing panel door locking devices (e.g., Korean Authorization No. 10-2023361) have the following problems: complex structure, difficult to manufacture, and sometimes made of plastic, which makes them easy to damage.

[0009] Therefore, there is a need for a locking device for panel doors that is simple in structure, easy to manufacture, and not easily damaged. Summary of the Invention

[0010] The problem that the invention aims to solve

[0011] The purpose of this invention is to provide an external operating handle assembly for a molded case circuit breaker that is not easily damaged, has a simple structure, is easy to manufacture, and prevents the panel door from being opened when current flows in the molded case circuit breaker.

[0012] Technical solutions to the problem

[0013] The aforementioned objective of this invention is achieved through the following content.

[0014] An example of the external operating handle assembly of a molded case circuit breaker according to an embodiment of the present invention includes an external operating handle and a locking part. The external operating handle is coupled to the molded case circuit breaker. The locking part is coupled to a panel door and contacts a locking part of the external operating handle. In the normal state where current flows in the molded case circuit breaker, the locking part moves in one direction and contacts the locking part.

[0015] Specifically, the locking portion includes a first plate and a second plate. The first plate is engaged with the panel door. The second plate is arranged at a predetermined angle relative to the first plate. The locking portion of the external operating handle contacts the second plate.

[0016] Specifically, a first locking protrusion is formed in the second plate portion. If the panel door is opened while the locking portion is moved in one direction, the first locking protrusion contacts one end of the locking portion.

[0017] Specifically, the first card slot protrusion is formed by protruding in a direction parallel to one or the other side of the second plate.

[0018] Specifically, the first card slot protrusion is formed from the edge of the second plate to the side where the boundary region of the part connecting the second plate and the first plate is located, with a predetermined length.

[0019] Specifically, as the first card slot protrusion moves from the edge of the second plate toward the side where the boundary area is located, the protrusion height of the first card slot protrusion gradually increases.

[0020] Specifically, the first fastening member is inserted into the hole formed in the panel door and the through hole formed in the first plate portion, so that the panel door and the first plate portion are joined together.

[0021] The external operating handle assembly of the molded case circuit breaker in an example of the present invention further includes a reinforcing portion that is coupled to the second plate portion. The side of the reinforcing portion that contacts the second plate portion and the side of the second plate portion that contacts the reinforcing portion are formed with the same shape.

[0022] Specifically, a second locking protrusion is formed in the reinforcing part. If the panel door is opened while the locking part is moved in one direction, the second locking protrusion contacts one end of the locking part.

[0023] Specifically, the second locking protrusion is formed by protruding in a direction parallel to one or the other side of the reinforcing portion.

[0024] Specifically, the second locking protrusion is formed from one edge of the reinforcing portion along its length to the other edge, with a predetermined length.

[0025] Specifically, as the second locking protrusion moves from one edge of the reinforcing portion to the other edge, the protrusion height of the second locking protrusion gradually increases.

[0026] Specifically, the second fastening member is inserted into the through hole formed in the second plate and the through hole formed in the reinforcing part, so that the second plate and the reinforcing part are joined together.

[0027] Specifically, a locking insertion groove is formed in the second plate portion. The locking insertion groove is a hole penetrating one and the other sides of the second plate portion, and is formed with an opening on one side. If the locking part moves in one direction and one end of the locking part is inserted into the locking insertion groove, the opening of the panel door is restricted. In other words, if the panel door is opened with the locking part moved in one direction and one end of the locking part inserted into the locking insertion groove, the inner circumferential surface of the locking insertion groove contacts one end of the locking part.

[0028] Specifically, a locking insertion hole is formed in the second plate portion. The locking insertion hole is a hole penetrating both one and the other side of the second plate portion. If the locking part moves in one direction and one end of the locking part is inserted into the locking insertion hole, the opening of the panel door is restricted. In other words, if the panel door is opened while the locking part is moved in one direction and one end of the locking part is inserted into the locking insertion hole, the inner circumferential surface of the locking insertion hole contacts one end of the locking part.

[0029] Invention Effects

[0030] According to an example of an embodiment of the present invention, the external operating handle assembly of a molded case circuit breaker prevents the panel door from being opened when current flows in the molded case circuit breaker, thereby preventing accidents in advance.

[0031] Furthermore, the external operating handle assembly of the molded case circuit breaker according to the embodiment of the present invention is not easily damaged, has a simple structure, and is easy to manufacture.

[0032] The more detailed effects of the external operating handle assembly of the molded case circuit breaker according to an example of an embodiment of the present invention are described in the following specific embodiments. Attached Figure Description

[0033] Figure 1 This is a perspective view of the external operating handle assembly of a molded case circuit breaker, viewed from top to bottom, as an example of an embodiment of the present invention.

[0034] Figure 2 Observing from bottom to top Figure 1 A perspective view of the external operating handle assembly of a molded case circuit breaker.

[0035] Figure 3 Viewed from one side Figure 1 A 3D view of the back of the panel door.

[0036] Figure 4 Viewed from the other side Figure 1 A 3D view of the back of the panel door.

[0037] Figure 5 It is shown Figure 4 Diagram of the first mounting section and the first reinforcing section.

[0038] Figure 6 It is shown Figure 5 An exploded perspective view of the first locking part and the first reinforcing part.

[0039] Figure 7 It is shown Figure 6 The diagram of the first card slot.

[0040] Figure 8 It is shown Figure 6 Diagram of the first reinforced section.

[0041] Figure 9 This is a three-dimensional view of the interior of the external control handle as seen from one side.

[0042] Figure 10 Viewed from the other side Figure 9 A three-dimensional view of the interior of the external operating handle.

[0043] Figure 11 and Figure 12 This is a cross-sectional view showing the interior of the external operating handle.

[0044] Figure 13 This is a diagram showing the second locking part.

[0045] Figure 14 This is a diagram showing the third locking section. Detailed Implementation

[0046] Hereinafter, examples of embodiments of the present invention will be described in more detail with reference to the accompanying drawings. For elements of the present invention that are readily understood and reproduced by those skilled in the art through existing technology, specific descriptions will be omitted to avoid obscuring the essence of the invention.

[0047] The accompanying drawings are merely examples to facilitate understanding of the embodiments disclosed in this specification, and the technical concepts disclosed in this specification are not limited to the drawings.

[0048] Unless the context clearly indicates a different meaning, a singular expression includes a plural expression.

[0049] Furthermore, the terms containing ordinal numbers such as "first," "second," etc., used in this specification may be used to describe various constituent elements, but the constituent elements are not limited by the terms. The terms are used only for the purpose of distinguishing one constituent element from other constituent elements. For example, without departing from the scope of the invention, a first constituent element may be named a second constituent element, and similarly, a second constituent element may be named a first constituent element.

[0050] The following describes an example of the external operating handle assembly of a molded case circuit breaker according to an embodiment of the present invention.

[0051] In the following description, the external operating handle assembly of the molded case circuit breaker of the embodiment of the present invention may be simply referred to as "the external operating handle assembly of the present invention".

[0052] Reference Figure 1 and Figure 2 The external operating handle assembly of the present invention is arranged on the upper side of the molded case circuit breaker 1 and is combined with the molded case circuit breaker 1. The combination of the external operating handle assembly and the molded case circuit breaker 1 of the present invention adopts a known method.

[0053] A molded case circuit breaker (MCCB) is a type of circuit breaker that disconnects power to prevent electrical accidents in the event of abnormal currents such as leakage or overcurrent.

[0054] A standard molded case circuit breaker 1 internally includes fixed contacts and movable contacts. During the flow of a normal current (excluding abnormal current), the fixed contacts and movable contacts are in contact with each other, thereby enabling energization. Furthermore, if an abnormal current occurs, the fixed contacts and movable contacts separate, thereby disconnecting the energizer.

[0055] When the fixed contact and the movable contact separate, an electric arc is generated due to the abnormal current flowing between the fixed contact and the movable contact. After the generated arc is extinguished, it is discharged to the outside of the molded case circuit breaker 1.

[0056] The housing (not given reference numerals) of the molded case circuit breaker 1 houses a plurality of base assemblies 1a.

[0057] A plurality of base components 1a are connected to each other. Each of the plurality of base components 1a includes a plurality of constituent elements for connecting the plurality of base components 1a to each other.

[0058] A plurality of base assemblies 1a are connected to each other and are simultaneously energized or de-energized. The energization indicates that current is flowing.

[0059] A handle 1b (see reference) is mounted on any one of the plurality of base components 1a. Figure 9 and Figure 10 (and various components for mounting the handle 1b).

[0060] If an abnormal current occurs inside the base assembly 1a while the molded case circuit breaker 1 is energized, the energization of the plurality of base assemblies 1a is cut off. Furthermore, by operating the handle 1b of the molded case circuit breaker 1, the plurality of base assemblies 1a can be simultaneously energized or have their energization cut off.

[0061] The components and operating principles that enable a plurality of base components 1a to be connected to each other and simultaneously energized or de-energized follow known techniques.

[0062] The molded case circuit breaker 1 used in this invention (specifically, the base assembly 1a) includes a fixed contact (not shown), a movable contact (not shown), an opening and closing mechanism (not shown), an arc extinguishing part (not shown), and a trip part (not shown). Since the molded case circuit breaker 1 used in this invention refers to a known molded case circuit breaker 1, its specific description is omitted.

[0063] The external operating handle assembly of the present invention includes an external operating handle 10.

[0064] An external operating handle 10 is arranged on the upper side of the molded case circuit breaker 1 and is connected to the handle 1b of the molded case circuit breaker 1.

[0065] Figures 9 to 10 The housing 11 of the external operating handle 10 is omitted, and the interior of the external operating handle 10 is shown.

[0066] Reference Figure 1 , Figure 2 , Figures 9 to 12 The external operating handle 10 includes a housing 11, a main body 12, a locking part 13, and a handle part 15.

[0067] The housing 11 of the external operating handle 10 forms the appearance of the external operating handle 10.

[0068] The main body 12, the locking part 13, and the handle part 15 are housed in the internal space of the housing 11.

[0069] The main body 12 can move inside the housing 11.

[0070] The shape of the main body 12 is not limited to a specific shape.

[0071] The main body 12 is connected to the handle 1b of the molded case circuit breaker 1.

[0072] The main body 12 includes components (e.g., a recess, etc.) for connecting to the handle 1b of the molded case circuit breaker 1.

[0073] If the position of the handle 1b of the molded case circuit breaker 1 changes from the OFF position to the ON position, the main body 12 moves (advances) in one direction.

[0074] If the handle 1b of the molded case circuit breaker 1 changes from the OFF position to the ON position, and thus the handle 1b of the molded case circuit breaker 1 is in the ON position, the main body 12 remains in a state of moving (forward) in one direction.

[0075] Furthermore, if the arrangement position of the handle 1b of the molded case circuit breaker 1 changes from the ON position to the OFF position, the main body 12 moves (reverses) in the opposite direction.

[0076] If the handle 1b of the molded case circuit breaker 1 changes from the ON position to the OFF position, and thus the handle 1b of the molded case circuit breaker 1 is in the OFF position, the main body 12 remains in a state of moving (retracting) in the opposite direction.

[0077] When the handle 1b of the molded case circuit breaker 1 is in the ON position, it indicates that the molded case circuit breaker 1 is in a normal state. When the molded case circuit breaker 1 is in a normal state, the fixed contact and the movable contact of the molded case circuit breaker 1 are in contact, and current flows in the molded case circuit breaker 1.

[0078] Furthermore, the handle 1b of the molded case circuit breaker 1 is in the OFF position, indicating that the molded case circuit breaker 1 is in the OFF state. When the molded case circuit breaker 1 is in the OFF state, the fixed contact and the movable contact of the molded case circuit breaker 1 are separated, so that no current flows in the molded case circuit breaker 1.

[0079] The condition where the molded case circuit breaker 1 is in the off state indicates, for example, that an abnormal current has occurred in the molded case circuit breaker 1. If an abnormal current occurs in the molded case circuit breaker 1, a tripping operation is performed by the operation of the trip section and the opening and closing mechanism section. That is, the movable contact is separated from the fixed contact by rotation, and the current flowing in the molded case circuit breaker 1 is interrupted.

[0080] The external operating handle 10 includes other components that enable the main body 12 to move.

[0081] The locking part 13 can move inside the housing 11.

[0082] If the main body 12 moves (advances) in one direction, the locking part 13 connected to the main body 12 moves (advances) in the same direction as the main body 12. At this time, one end of the locking part 13 penetrates the through hole 11h formed in the housing 11 (see reference). Figure 11 and Figure 12 It protrudes outward from the shell 11.

[0083] The end of the locking part 13 that protrudes outward from the housing 11 contacts the locking part 30 (described later) when the panel door 20 is opened. Therefore, the panel door 20 cannot be opened. If the panel door 20 is opened while current is flowing in the molded case circuit breaker 1, the user may be exposed to an accident.

[0084] The external operating handle assembly of the present invention prevents the panel door 20 from being opened when the molded case circuit breaker 1 is in the ON state, thereby preventing possible accidents in advance.

[0085] On the other hand, if the main body 12 moves (retracts) in the opposite direction, the locking part 13 connected to the main body 12 moves (retracts) together with the main body 12 in the opposite direction. At this time, one end of the locking part 13 enters the interior of the housing 11 through the through hole 11h formed in the housing 11.

[0086] The end of the locking part 13 that enters the interior of the housing 11 separates (detaches) from the locking part 30 that is fastened to the panel door 20. As a result, the panel door 20 can be opened.

[0087] The external operating handle assembly of the present invention opens the panel door 20 when there is no current flowing in the molded case circuit breaker 1. At this time, the user can inspect the molded case circuit breaker 1.

[0088] The locking part 13 can be formed in various shapes. The shape of the locking part 13 is not limited to a specific shape, as long as one end of the locking part 13 can move through the through hole 11h of the housing 11 and can contact the locking part 30.

[0089] The locking part 13 is connected to one side of the main body part 12.

[0090] The locking part 13 and / or the main body part 12 include other constituent elements that connect one side of the locking part 13 and the main body part 12.

[0091] The handle part 15 is arranged on the main body part 12.

[0092] The upper part of the handle portion 15 is shaped for easy gripping by the user, and the lower part of the handle portion 15 has a gear portion 14. The upper and lower parts of the handle portion 15 can be formed as one piece, but are not limited to this; they can also be manufactured separately and then joined together. The joining is done in a known manner.

[0093] Gear section 14 indicates a gear formed in a circle or partially in a circle.

[0094] Teeth (gear teeth) are formed on the edge of the gear section 14.

[0095] The teeth of the gear portion 14 and the teeth 12a of the gear formed on one side of the main body portion 12 (see reference) Figure 10 The gears engage. As a result, the gear 14 (handle 15) rotates when the main body 12 moves.

[0096] If the main body 12 moves in one direction (forward), the gear part 14 (handle part 15) rotates in a rotational direction (e.g., clockwise). At this time, the handle part 15 is in the ON position. The handle part 15 being in the ON position indicates that the handle 1b of the molded case circuit breaker 1 is in the ON position.

[0097] Furthermore, if the main body 12 moves (reverses) in the opposite direction, the gear part 14 (handle part 15) rotates in the opposite direction to the rotation direction (e.g., counterclockwise). At this time, the handle part 15 is in the OFF position. The handle part 15 being in the OFF position indicates that the handle 1b of the molded case circuit breaker 1 is in the OFF position.

[0098] The external operating handle assembly of the present invention includes a locking part 30.

[0099] The locking part 30 is fastened to the panel door 20.

[0100] The panel door 20 is installed on the distribution panel or external box, indicating that the door of the distribution panel or external box can be opened and closed.

[0101] After opening the panel door 20, the user can perform checks on the external operating handle 10 and the molded case circuit breaker 1, which are located inside the distribution panel or external box.

[0102] When current flows through the molded case circuit breaker 1 (the molded case circuit breaker 1 is in its normal state), the lower panel door 20 is closed. When the current flowing through the molded case circuit breaker 1 is interrupted (the molded case circuit breaker 1 is in its closed state), the lower panel door 20 can be opened.

[0103] Panel door 20 includes a door plate.

[0104] The door panel is a component of the panel door 20, and is formed into a panel shape with a predetermined size.

[0105] Since the panel door 20 (and the door panel) are known components, specific descriptions are omitted. However, the door panel in this invention is made of metal, making it less prone to damage.

[0106] The panel door 20 (specifically, the door panel) has an opening 20h that extends through the panel door 20.

[0107] The handle portion 15 of the external operating handle 10 is exposed to the outside through the opening 20h formed in the panel door 20. The user can operate the handle portion 15 of the external operating handle 10 through the opening 20h without opening the panel door 20.

[0108] The latching part 30, which will be described later, is formed on one side of the edge (frame) of the opening 20h of the panel door 20 surrounding the panel door 20.

[0109] Figures 1 to 7 , Figure 9 , Figures 11 to 12 The locking part 30 is shown. (The text appears to be incomplete and contains several grammatical errors. A more accurate translation would require the full context.) Figures 1 to 7 , Figure 9 , Figures 11 to 12 The shown locking part 30 is named "first locking part" to correspond with... Figure 13 and Figure 14 The card slots 30′ and 30″ are shown in the diagram.

[0110] Reference Figures 1 to 7 , Figure 9 , Figures 11 to 12 The first locking part 30 prevents the panel door 20 from opening. That is, the first locking part 30 makes it impossible for the panel door 20 to be opened.

[0111] The first locking part 30 is engaged with the panel door 20. Specifically, the first locking part 30 is engaged with the back of the panel door 20 (specifically, the door panel).

[0112] If the panel door 20 rotates to open or close, the first locking part 30 also rotates together with the panel door 20.

[0113] If the locking part 13 of the external operating handle 10 moves, and one end of the locking part 13 protrudes outward through the through hole 11h formed in the housing 11 of the external operating handle 10, then one end of the locking part 13 contacts the first locking part 30. As a result, the panel door 20 can no longer be rotated.

[0114] The first locking part 30 is formed in the shape of a plate with a predetermined thickness and is made of metal. Because the first locking part 30 is made of metal, it is not easily damaged by external forces.

[0115] The first locking part 30 includes a first plate part 31 and a second plate part 32.

[0116] Specifically, the first card slot 30 is " "The shape is formed and divided into a first plate portion 31 and a second plate portion 32. In other words, the first plate portion 31 and the second plate portion 32 are integrally formed, and the first plate portion 31 and the second plate portion 32 are connected to form a shape." "shape.

[0117] The first plate portion 31 and the second plate portion 32 are formed in the shape of plates with a predetermined thickness, and each has a predetermined length in one direction.

[0118] The first plate portion 31 and the second plate portion 32 are formed at a predetermined angle. That is, the boundary region 34 connecting the first plate portion 31 and the second plate portion 32 is bent, so that the first plate portion 31 and the second plate portion 32 have a predetermined angle.

[0119] The first panel 31 is attached to the back of the panel door 20 (specifically, the door panel).

[0120] One or more through holes 31h are formed in the first plate portion 31. Fastening members (not shown) such as screws, bolts or rivets are arranged in the through holes 31h (first fastening members).

[0121] The first fastening member is inserted into the through hole 31h of the first plate portion 31 and the hole formed in the panel door 20 (specifically, the door panel), thereby connecting the first plate portion 31 and the panel door 20. By using the connection method described above, the first plate portion 31 (first locking portion 30) is easily fastened to the panel door 20. This demonstrates the ease of manufacturing.

[0122] According to another embodiment of the invention, the first plate portion 31 can be joined to the panel door 20 (specifically, the door panel) by welding.

[0123] The second plate portion 32 can contact the locking portion 13. Specifically, the locking portion 13 restricts the movement of the second plate portion 32 (first locking portion 30) by contacting the second plate portion 32.

[0124] A locking protrusion (first locking protrusion) 321 is formed in the second plate portion 32.

[0125] The first locking protrusion 321 contacts the locking part 13.

[0126] The second plate portion 32 has one side 32a and another side 32b. The one side 32a and the other side 32b are surfaces facing opposite sides of each other with a thickness separating them.

[0127] The first positioning protrusion 321 is formed by protruding in a direction parallel to one side 32a (or the other side 32b) of the second plate portion 32.

[0128] In other words, the first locking protrusion 321 is formed by protruding outward from the surface (referred to as the "thickness surface") 32c that forms the thickness of the second plate portion 32. For example, the first locking protrusion 321 is formed by protruding in a direction orthogonal to the thickness surface 32c of the second plate portion 32.

[0129] The first locking protrusion 321 is formed from the edge of the second plate portion 32 toward the side where the boundary region 34, which is the part connected to the first plate portion 31, is located, with a predetermined length. The edge of the second plate portion 32 refers to the end located in the direction opposite to that of the boundary region 34.

[0130] like Figure 7 As shown, the protrusion height of the first locking protrusion 321 can gradually increase as it moves from the edge of the second plate portion 32 toward the side where the boundary region 34 is located. This has the effect of reducing the size of the first locking protrusion 321. Alternatively, the protrusion height of the first locking protrusion 321 can be the same. This has the effect of improving the ease of manufacturing the first locking protrusion 321.

[0131] If the panel door 20 (specifically, the panel) is opened while the locking part 13 is moving (forward) in one direction, the first locking protrusion 321 contacts one end of the locking part 13 (see reference). Figure 12 Therefore, panel door 20 will not be opened.

[0132] The external operating handle of the present invention may also include a reinforcing part (first reinforcing part) 33.

[0133] Reference Figures 2 to 6 , Figures 8 to 9 The first reinforcing part 33 enhances the function of preventing the panel door 20 from opening by increasing the contact area of ​​the locking part 13.

[0134] The first reinforcing part 33 is formed in the shape of a plate with a predetermined thickness and has a predetermined length in one direction.

[0135] The first reinforcing part 33 is combined with the second plate part 32 of the first locking part 30.

[0136] The first reinforcing part 33 and the second plate part 32 come into contact with each other through the combination of the first reinforcing part 33 and the second plate part 32.

[0137] The first reinforcing part 33 can be formed in the same shape as the second plate part 32.

[0138] The surface 33a of the first reinforcing part 33 that contacts the second plate part 32 and the surface 32a of the second plate part 32 that contacts the first reinforcing part 33 can be formed with the same shape. As a result, the area where the first reinforcing part 33 and the second plate part 32 are joined increases, and the area where the locking part 13 contacts the second plate part 32 also increases accordingly.

[0139] The first reinforcing part 33 has a locking protrusion (second locking protrusion) 331, which has the same shape as the locking protrusion (first locking protrusion) 321 formed on the second plate part 32.

[0140] The second locking protrusion 331 contacts the locking part 13.

[0141] The first reinforcing part 33 has one side 33a and another side 33b. The one side 33a and the other side 33b are sides facing opposite each other with a thickness separating them.

[0142] The second locking protrusion 331 is formed by protruding in a direction parallel to one side 33a (or the other side 33b) of the first reinforcing part 33.

[0143] In other words, the second locking protrusion 331 is formed by protruding outward from the thickness surface 33c of the first reinforcing part 33. For example, the second locking protrusion 331 is formed by protruding in a direction orthogonal to the thickness surface 33c of the first reinforcing part 33.

[0144] The second locking protrusion 331 is formed from one edge of the first reinforcing part 33 along its length toward the other edge, with a predetermined length. The one edge and the other edge of the first reinforcing part 33 refer to the ends located in opposite directions.

[0145] like Figure 8 As shown, the protrusion height of the second locking protrusion 331 can gradually increase as it moves from one edge of the first reinforcing portion 33 towards the other edge. This has the effect of reducing the size of the second locking protrusion 331. Alternatively, the protrusion height of the second locking protrusion 331 can be the same. This has the effect of improving the ease of manufacturing the second locking protrusion 331.

[0146] The second locking protrusion 331 is formed to the same size as the first locking protrusion 321 formed on the second plate portion 32.

[0147] The first reinforcing part 33 and the second plate part 32 are stacked. At this time, the second locking protrusion 331 is stacked with the first locking protrusion 321. That is, the second locking protrusion 331 is arranged at a position corresponding to the first locking protrusion 321. As a result, one side of the first locking protrusion 321 and one side of the second locking protrusion 331 face each other and are in contact.

[0148] If the panel door 20 (specifically, the panel) is opened while the locking part 13 is moving (forward) in one direction, the first locking protrusion 321 and the second locking protrusion 331 will contact one end of the locking part 13. As a result, the panel door 20 will not be opened.

[0149] For the purpose of joining together, one or more through holes 32h and 33h are formed in the second plate portion 32 and the first reinforcing portion 33, respectively.

[0150] The through hole 32h formed in the second plate portion 32 is a hole that penetrates one side 32a and the other side 32b of the second plate portion 32, and the through hole 33h formed in the first reinforcing portion 33 is a hole that penetrates one side 33a and the other side 33b of the first reinforcing portion 33.

[0151] If the first reinforcing part 33 and the second plate part 32 are stacked, the through hole 33h formed in the first reinforcing part 33 and the through hole 32h formed in the second plate part 32 are connected to each other.

[0152] Fastening components such as screws, bolts, or rivets (second fastening components) are arranged in the through holes 32h and 33h (refer to...). Figure 6 ).

[0153] The second fastening member m is inserted into the through hole 33h formed in the first reinforcing part 33 and the through hole 32h formed in the second plate part 32, thereby engaging the first reinforcing part 33 and the second plate part 32. That is, the first locking part 30 and the first reinforcing part 33 are fastened by the second fastening member m.

[0154] According to another embodiment of the present invention, the first reinforcing part 33 and the second plate part 32 can be joined together by welding.

[0155] On the other hand, the aforementioned locking part (first locking part 30) of the present invention can be formed in different shapes.

[0156] Figure 13 Another locking part (second locking part 30') is shown, which is different from the first locking part 30 of the present invention. Figure 14 Another locking part (third locking part 30″) is shown, which is different from the first locking part 30 of the present invention.

[0157] First, let me explain Figure 13 The second locking part 30′ is shown.

[0158] The second locking portion 30′ differs from the aforementioned first locking portion 30 in that it has a locking insertion groove (first locking insertion groove) 321′, but no locking protrusion (first locking protrusion) 321. Therefore, apart from the aforementioned differences, the second locking portion 30′ is the same as or similar to the first locking portion 30.

[0159] In the following description of the second locking part 30′, the constituent elements that are different from those of the first locking part 30 will be specifically explained. For the same or similar constituent elements or parts, the content described for the first locking part 30 will be used instead.

[0160] The second locking part 30′ is not formed in the locking protrusion (first locking protrusion) 321 of the first locking part 30, but instead has a locking insertion groove (first locking insertion groove) 321′.

[0161] The first slot 321' is formed in the second plate portion 32.

[0162] The locking part 13 is inserted into the first locking slot 321'. Specifically, one end of the locking part 13 is inserted into the first locking slot 321', thereby restricting the movement of the second plate part 32 (second locking part 30').

[0163] In the second plate portion 32, a first locking insertion groove 321' is formed at the insertion position of one end of the locking portion 13.

[0164] The first slot 321' is a hole that passes through one side 32a and the other side 32b of the second plate portion 32, and is formed as an opening on one side.

[0165] like Figure 13 As shown, the first card slot insertion groove 321' can be formed into a polygonal shape. However, the shape of the first card slot insertion groove 321' is not limited to this; it can be formed into a semi-circle or a semi-ellipse, etc.

[0166] If the locking part 13 moves in one direction and one end of the locking part 13 is inserted into the first locking slot 321', the panel door 20 (specifically, the panel) will not be opened (opening is restricted).

[0167] In other words, if the panel door 20 is opened while the locking part 13 is moved in one direction and one end of the locking part 13 is inserted into the first locking insertion slot 321', the inner circumferential surface of the first locking insertion slot 321' will contact one end of the locking part 13.

[0168] A reinforcing part (second reinforcing part) (not shown) may be attached to the second locking part 30'.

[0169] The second reinforcing part differs from the aforementioned first reinforcing part 33 in that it has a locking insertion groove (second locking insertion groove) but no locking protrusion (second locking protrusion) 331. Therefore, apart from the aforementioned differences, the second reinforcing part is the same as or similar to the first reinforcing part 33.

[0170] In the following explanation of the second reinforcing part, the constituent elements that are different from those of the first reinforcing part 33 will be explained in detail, while the same or similar constituent elements or parts will be replaced by the explanation of the first reinforcing part 33.

[0171] The external operating handle of the present invention may also include a reinforcing part (second reinforcing part) (not shown).

[0172] The second reinforcing part is not formed in the locking protrusion (second locking protrusion) 331 of the first reinforcing part 33, but instead has a locking insertion groove (second locking insertion groove).

[0173] The second reinforcing part has a locking insertion groove (second locking insertion groove), which has the same shape as the locking insertion groove (first locking insertion groove) 321′ formed on the second plate part 32.

[0174] The locking part 13 is inserted into the second locking insertion slot. Specifically, one end of the locking part 13 is inserted into the second locking insertion slot, thereby restricting the movement of the second reinforcing part and the second plate part 32 (second locking part 30').

[0175] The second slot is a hole that passes through one side and the other side of the second reinforcing part, and is formed as an opening on one side.

[0176] The second slot is formed to the same size as the first slot 321' formed in the second plate portion 32.

[0177] The second reinforcing part is stacked with the second plate part 32. At this time, the second locking insertion slot is connected to the first locking insertion slot 321'. That is, the second locking insertion slot is arranged at the position corresponding to the first locking insertion slot 321'.

[0178] If the locking part 13 moves such that one end of the locking part 13 is inserted into the first locking slot 321' and the second locking slot, the panel door 20 (specifically, the panel) will not be opened.

[0179] Since one end of the locking part 13 is inserted into the locking insertion slot (slot shape), the play (gap) that the panel door 20 may have when opened can be minimized. In addition, since one side of the locking insertion slot is open, the panel door 20 will not be opened even if only a part of one end of the locking part 13 is inserted into the locking insertion slot.

[0180] The following is about Figure 14 The third locking part 30″ shown will be explained.

[0181] The third locking portion 30″ differs from the aforementioned first locking portion 30 in that it has a locking insertion hole (first locking insertion hole) 321″ but no locking protrusion (first locking protrusion) 321. Therefore, apart from the aforementioned differences, the third locking portion 30″ is the same as or similar to the first locking portion 30.

[0182] In the following description of the third locking part 30″, the constituent elements that are different from those of the first locking part 30 will be specifically explained. For the same or similar constituent elements or parts, the content described for the first locking part 30 will be used instead.

[0183] The third locking part 30″ does not have a locking protrusion (first locking protrusion) 321 formed in the first locking part 30, but instead has a locking insertion hole (first locking insertion hole) 321″.

[0184] The first insertion hole 321″ is formed in the second plate portion 32.

[0185] The locking part 13 is inserted into the first locking insertion hole 321″. Specifically, one end of the locking part 13 is inserted into the first locking insertion hole 321″, thereby restricting the movement of the second plate part 32 (the third locking part 30″).

[0186] In the second plate portion 32, a first locking insertion hole 321″ is formed at the insertion position of one end of the locking portion 13.

[0187] The first insertion hole 321″ is a hole that passes through one side 32a and the other side 32b of the second plate 32.

[0188] like Figure 14 As shown, the first card slot insertion hole 321″ can be formed in a circular shape. However, the shape of the first card slot insertion hole 321″ is not limited to this, and can be formed in an elliptical or polygonal shape.

[0189] If the locking part 13 moves in one direction and one end of the locking part 13 is inserted into the first locking insertion hole 321″, the panel door 20 (specifically, the panel) will not be opened (opening is restricted).

[0190] In other words, if the panel door 20 is opened while the locking part 13 is moved in one direction and one end of the locking part 13 is inserted into the first locking insertion hole 321″, the inner circumferential surface of the first locking insertion hole 321″ will contact one end of the locking part 13.

[0191] A reinforcing part (third reinforcing part) (not shown) may be incorporated into the third locking part 30″.

[0192] The third reinforcing part differs from the aforementioned first reinforcing part 33 in that it has a locking insertion hole (second locking insertion hole) but no locking protrusion (second locking protrusion) 331. Therefore, apart from the aforementioned differences, the third reinforcing part is the same as or similar to the first reinforcing part 33.

[0193] In the following explanation of the third reinforcing part, the constituent elements that are different from those of the first reinforcing part 33 will be explained in detail. For the same or similar constituent elements or parts, the explanation of the first reinforcing part 33 will be used instead.

[0194] The external operating handle of the present invention may also include a reinforcing part (third reinforcing part) (not shown).

[0195] The third reinforcing part is not formed in the locking protrusion (second locking protrusion) 331 of the first reinforcing part 33, but instead has a locking insertion hole (second locking insertion hole).

[0196] The third reinforcing part has a locking insertion hole (second locking insertion hole), which has the same shape as the locking insertion hole (first locking insertion hole) 321″ formed on the second plate part 32.

[0197] The locking part 13 is inserted into the second locking insertion hole. Specifically, one end of the locking part 13 is inserted into the second locking insertion hole, thereby restricting the movement of the third reinforcing part and the second plate part 32 (the third locking part 30″).

[0198] The second insertion hole is a hole that penetrates through one side and the other side of the third reinforcing part.

[0199] The second insert hole is formed to the same size as the first insert hole 321″ formed in the second plate portion 32.

[0200] The third reinforcing part is stacked with the second plate part 32. At this time, the second locking insertion hole is connected to the first locking insertion hole 321″. That is, the second locking insertion hole is arranged at the position corresponding to the first locking insertion hole 321″.

[0201] If the locking part 13 moves so that one end of the locking part 13 is inserted into the first locking insertion hole 321″ and the second locking insertion hole, the panel door 20 (specifically, the panel) will not be opened.

[0202] Since one end of the locking part 13 is inserted into the locking insertion hole (hole shape), there is almost no play (gap) that the panel door 20 could possibly open. As a result, the panel door 20 is securely closed.

Claims

1. An external operating handle assembly for a molded case circuit breaker, wherein, include: External operating handle, integrated with molded case circuit breaker; as well as The locking part is combined with the panel door and contacts the locking part of the external operating handle; In the normal state where current flows in the molded case circuit breaker, the locking part moves in one direction and contacts the locking part.

2. The external operating handle assembly for a molded case circuit breaker according to claim 1, wherein, The locking part includes: The first panel portion is combined with the panel door; and The second plate is arranged to be inclined relative to the first plate at a predetermined angle; The locking part of the external operating handle contacts the second plate.

3. The external operating handle assembly for a molded case circuit breaker according to claim 2, wherein, A first locking protrusion is formed in the second plate portion; If the panel door is opened while the locking part is moving in one direction, the first latching protrusion contacts one end of the locking part.

4. The external operating handle assembly for a molded case circuit breaker according to claim 3, wherein, The first card slot protrusion is formed by protruding in a direction parallel to one or the other side of the second plate.

5. The external operating handle assembly for a molded case circuit breaker according to claim 4, wherein, The first locking protrusion is formed from the edge of the second plate to the side where the boundary region of the part connecting the second plate and the first plate is located, with a predetermined length.

6. The external operating handle assembly for a molded case circuit breaker according to claim 5, wherein, As the first locking protrusion moves from the edge of the second plate toward the side where the boundary region is located, the protrusion height of the first locking protrusion gradually increases.

7. The external operating handle assembly for a molded case circuit breaker according to claim 2, wherein, A first fastening member is inserted into a hole formed in the panel door and a through hole formed in the first plate portion, thereby engaging the panel door and the first plate portion.

8. The external operating handle assembly for a molded case circuit breaker according to claim 2, wherein, It also includes a reinforcing portion that is combined with the second plate portion; The side of the reinforcing portion that contacts the second plate portion and the side of the second plate portion that contacts the reinforcing portion are formed with the same shape.

9. The external operating handle assembly for a molded case circuit breaker according to claim 8, wherein, A second locking protrusion is formed in the reinforcing part; If the panel door is opened while the locking part is moving in one direction, the second latching protrusion contacts one end of the locking part.

10. The external operating handle assembly for a molded case circuit breaker according to claim 9, wherein, The second locking protrusion is formed by protruding in a direction parallel to one or the other side of the reinforcing part.

11. The external operating handle assembly for a molded case circuit breaker according to claim 10, wherein, The second locking protrusion extends from one edge of the reinforcing portion along its length toward the other edge by a predetermined length.

12. The external operating handle assembly for a molded case circuit breaker according to claim 11, wherein, As the second locking protrusion moves from one edge of the reinforcing portion toward the other edge, the protrusion height of the second locking protrusion gradually increases.

13. The external operating handle assembly for a molded case circuit breaker according to claim 8, wherein, The second fastening member is inserted into the through hole formed in the second plate and the through hole formed in the reinforcing part, so that the second plate and the reinforcing part are joined together.

14. The external operating handle assembly for a molded case circuit breaker according to claim 2, wherein, A slotting insertion groove is formed in the second plate portion; The slot is a hole that passes through one side and the other side of the second plate, and is formed as an opening on one side; If the panel door is opened while the locking part is moved in one direction and one end of the locking part is inserted into the slot, the inner circumferential surface of the slot will contact one end of the locking part.

15. The external operating handle assembly for a molded case circuit breaker according to claim 2, wherein, A locking insertion hole is formed in the second plate portion; The card slot insertion hole is a hole that penetrates through one side and the other side of the second plate. If the panel door is opened while the locking part is moved in one direction and one end of the locking part is inserted into the locking insertion hole, the inner circumferential surface of the locking insertion hole will contact one end of the locking part.

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