Handle locking device of circuit breaker

Abstract

The invention provides a handle locking device of a circuit breaker, which can improve operation safety. Sliding pins (26a, 26b) are inserted into a first long hole (20) of a locking plate (18) and a second long hole (25) of a closing plate (12), so that the sliding pins (26a, 26b) are connected with the sliding part (21), and the handle holder and the closing plate can be supported on the locking plate in a manner that the handle holder and the closing plate can slide in the moving direction of the grip part. And at the OFF position of the gripper part, the second locking hole of the sliding part is communicated with the first locking hole of the locking plate, and at the ON position of the gripper part, the second locking hole is closed by the locking plate. In addition, the closing plate moves in the gripper direction under the condition that the first long hole of the locking plate is closed.

Description

Technical Field

[0001] The present invention relates to a handle locking device for a circuit breaker which is applied as an external accessory device to a wiring circuit breaker, a leakage circuit breaker, etc. Background Art

[0002] In order to prevent the on / off operating handle of a circuit breaker installed in a distribution board from being erroneously operated from the OFF position (the position where the main circuit contacts are in an open state) to the ON position (the position where the main circuit contacts are in a closed state), there is an increasing demand and requirement for a handle locking device that locks the grip of the rocker-type on / off operating handle in the OFF position.

[0003] As a conventional handle locking device, there is known a device in which a padlock or a hasp lock is hooked in a locking hole so that a locking member restricts a grip portion of an opening and closing operating handle to an OFF position for locking (for example, Patent Document 1).

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2015-43264 Summary of the invention

[0007] Technical problem to be solved by the invention

[0008] In the conventional handle locking device, even if the grip portion of the opening and closing operating handle is in the ON position, if there is a hole other than the locking hole of the padlock or hasp lock, the padlock or hasp lock may be hooked in the hole and may be installed incorrectly, which poses a problem in terms of work safety.

[0009] Furthermore, when a small padlock is attached to lock the handle in the OFF position, the handle may move to a position switched to the ON position, which also poses a problem in terms of work safety.

[0010] Therefore, an object of the present invention is to provide a handle locking device for a circuit breaker that can improve operation safety.

[0011] Technical solutions to solve problems

[0012] In order to achieve the above-mentioned purpose, a handle locking device of a circuit breaker in one embodiment of the present invention can lock a grip portion of a rocker-type opening and closing operating handle protruding from the upper surface of a housing of the circuit breaker in an OFF position, and comprises: a locking plate mounted on the upper surface of the housing, the locking plate having a first locking hole formed therein and a first long hole formed therein along a moving direction of the grip portion, a handle holder having a sliding portion having a second locking hole formed therein and a holding portion for holding the grip portion; and a closing plate having a second long hole formed therein, wherein the sliding pin is connected to the sliding portion by inserting the sliding pin through the first long hole of the locking plate and the second long hole of the closing plate, the handle holder and the closing plate can be supported on the locking plate in a manner that allows sliding in the moving direction of the grip portion, wherein in the OFF position of the grip portion, the second locking hole of the sliding portion is connected to the first locking hole of the locking plate and can be hooked with a lock beam of a padlock or a lock hook of a hasp lock, and in the ON position of the grip portion, the second locking hole is closed by the locking plate, and the closing plate can move in the moving direction of the grip portion while closing the first long hole of the locking plate.

[0013] Effects of the Invention

[0014] The handle locking device for a circuit breaker according to the present invention can improve the operation safety of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a perspective view showing a handle locking device of the first embodiment installed on a circuit breaker, in which the first locking hole of the locking plate is connected to the second locking hole of the handle holder and can be locked by a padlock or a hasp lock when the grip portion of the rocker-type opening and closing operating handle is in the OFF position.

[0016] Figure 2 It is a perspective view showing the structure of the handle locking device according to the first embodiment.

[0017] Figure 3 The diagram shows a state in which, in the handle locking device of the first embodiment, when the handle holder moves to the OFF position of the grip portion or the ON position of the grip portion, the closing plate closes a portion through which a lock beam of a padlock or a lock hook of a hasp lock can pass.

[0018] Figure 4 The figure shows a state where the first locking hole of the lock plate of the handle locking device of the first embodiment is connected to the second locking hole of the handle holder when the grip portion of the circuit breaker is in the OFF position and the lock beam of the padlock is hooked to lock.

[0019] Figure 5 It is a perspective view showing a state in which the grip of the circuit breaker moves to the ON position and the first locking hole of the locking plate of the handle locking device of the first embodiment is disconnected from the second upper locking hole of the handle holder and the locking beam of the padlock cannot be hooked.

[0020] Figure 6 The diagram shows a state in which a blocking plate blocks a portion through which a locking beam of a padlock can pass when the first locking hole of the locking plate of the handle locking device of the first embodiment is not connected to the second upper locking hole of the handle holder.

[0021] Figure 7 It is a perspective view showing the structure of a handle lock device according to a second embodiment.

[0022] Figure 8 It is a diagram showing the structure of a handle lock device according to a second embodiment.

[0023] Fig. 9 It is a diagram showing the shape of a closing plate constituting the handle locking device according to the second embodiment.

[0024] Fig.10 It is a perspective view showing a state in which the first locking hole of the locking plate of the handle locking device of the second embodiment is communicated with the second upper locking hole of the handle holder when the grip portion of the circuit breaker is in the OFF position.

[0025] Fig.11 This is a diagram showing a state in which a lock beam of a padlock is hooked and locked when a first lock hole of a lock plate of a handle locking device according to a second embodiment communicates with a second upper lock hole of a handle holder.

[0026] Fig.12 It is a perspective view showing a state in which the grip of the circuit breaker moves to the ON position and the first locking hole of the locking plate of the handle locking device of the second embodiment is disconnected from the second upper locking hole of the handle holder and the locking beam of the padlock cannot be hooked.

[0027] Fig.13 It is an enlarged view of a main part showing a state in which the first locking hole of the locking plate and the second upper locking hole of the handle holder of the handle locking device according to the second embodiment are not communicated.

[0028] Fig.14 The diagram shows a structure for restricting movement of a handle holder holding the grip portion to a position where the grip portion is switched to the ON position when a small padlock is attached to lock the grip portion in the OFF position in the handle locking device of the second embodiment. DETAILED DESCRIPTION

[0029] Next, the embodiments of the present invention are described with reference to the accompanying drawings. In the following description of the drawings, the same or similar parts are marked with the same or similar reference numerals. However, it should be noted that the drawings are schematic diagrams, and the relationship between thickness and plane size, the ratio of thickness of each layer, etc. are different from reality. Therefore, the specific thickness and size should be determined by referring to the following description. In addition, of course, the drawings also contain parts with different relationship and ratio of each other's size.

[0030] In addition, the embodiments shown below represent examples of devices and methods for embodying the technical concept of the present invention, and the technical concept of the present invention does not specify the material, shape, structure, configuration, etc. of the constituent parts as described below. The technical concept of the present invention can be subjected to various changes within the technical scope described in the claimed scope of rights.

[0031] [First embodiment]

[0032] Figures 1 to 6 A handle locking device 2 according to a first embodiment of the present invention is shown and is mounted on a circuit breaker 1 .

[0033] like Figure 1 As shown, the circuit breaker 1 includes a main body case 4 composed of a box-shaped base 4 a and a cover 4 b , and a three-pole power supply side terminal portion 5 and a load side terminal portion 6 are formed on both sides of the main body case 4 .

[0034] Fixing screws (not shown) are inserted through threaded holes 7a and 7b provided between the power supply side terminal portion 5 and the load side terminal portion 6 and screwed into the switchboard, thereby arranging the circuit breaker 1 in the switchboard. An opening 4c is formed on the upper surface of the cover 4b of the main body case 4, and a grip portion 8 of a rocker handle for operating a toggle link mechanism (opening and closing mechanism) arranged inside the main body case 4 protrudes upward from the opening 4c. Here, reference numeral 8 OFF The handle 8 is set to the OFF position (hereinafter referred to as the OFF position 8) in order to open the main circuit contacts of the circuit breaker 1. OFF ). In addition, the reference numeral 8 described later ON This shows the position where the gripper 8 is set to the ON position (hereinafter referred to as the ON position 8) in order to close the main circuit contact. ON ).

[0035] With respect to the threaded hole 7a formed in the cover 4b, Figure 1 The right side of the handle locking device 2 is provided with a power side engaging portion for engaging with the power side mounting screw 14 described later, and relative to the threaded hole 7b, Figure 1A load-side engaging portion is formed on the left side of the handle lock device 2 to engage with a load-side mounting screw 16 described later. These power-side engaging portions and load-side engaging portions are formed as blind holes whose internally formed female threads are closed by a resin cover.

[0036] like Figure 2 As shown in (a) of FIG. 1 , the handle locking device 2 includes a closing frame 10 , a handle holder 11 , and a closing plate 12 formed of metal plates.

[0037] The closed frame 10 has a pair of first frames 10a and 10b extending in parallel to each other and a pair of second frames 10c and 10d connected at both ends of the long side direction of the pair of first frames 10a and 10b and extending in parallel to each other. In addition, a rectangular opening 10e surrounded by the pair of first frames 10a and 10b and the pair of second frames 10c and 10d is provided. On one side of the second frame 10c of the closed frame 10, a power supply side connecting portion 13 having a through hole and a power supply side mounting screw 14 having a head engaged with the power supply side connecting portion 13 and inserted into the through hole are provided. In addition, on the second frame 10d side of the closed frame 10, a load side connecting portion 15 having a through hole and a load side mounting screw 16 having a head engaged with the load side connecting portion 15 and inserted into the through hole are also provided.

[0038] like Figure 2 As shown in (b), in a first frame 10a of the closed frame 10, a locking plate 18 is continuously erected from the edge portion on the side of the opening 10e. A first locking hole 19 is formed in the center of the long side direction of the locking plate 18, and a first long hole 20 is formed below the first locking hole 19 in the direction in which the first frame 10a extends.

[0039] like Figure 2 As shown in (a), the handle holder 11 is a member having a sliding portion 21 and a holding portion 22 which are formed by bending a metal flat plate into an L shape and intersecting each other orthogonally. A second locking hole 23 having the same hole shape as the first locking hole 19 of the locking plate 18 is formed in the sliding portion 21. The holding portion 22 has a hole portion 24a surrounding the grip portion 8 and an engaging protrusion 24b protruding from the edge of the hole portion 24a and engaging with a part of the grip portion 8.

[0040] like Figure 3 As shown in (a), the closing plate 12 is a long metal plate having a second long hole 25 whose length in the long side direction is shorter than that of the first long hole 20 of the locking plate 18 and whose length in the short side direction is the same as that of the first long hole 20. The closing plate 12 is arranged between the locking plate 18 and the sliding portion 21 so that the second long hole 25 is opposite to the first long hole 20 of the locking plate 18. Figure 2As shown in (b), the two sliding pins 26a and 26b are inserted into the first long hole 20 and the second long hole 26 from the locking plate 18. And the heads of the two sliding pins 26a and 26b are engaged with the opening peripheral edge of the first long hole 20, as shown in FIG. Figure 2 As shown in (b), the front end portions of the two slide pins 26a and 26b penetrate the slide portion 21 and are fixed to the slide portion 21 by caulking. Thus, the closing plate 12 is arranged to be slidable relative to the lock plate 18 via the two slide pins 26a and 26b.

[0041] Here, Figure 3 (a) and (b) show the moving positions of the closing plate 12 when the two sliding pins 26a and 26b move to the left and right sides of the figure together with the movement of the sliding part 21. Figure 3 As shown in (a), when the closing plate 12 moves to the left, the end of the first long hole 20 of the locking plate 18 opens as a hole 20a at the right end of the closing plate 12. The hole 20a is a small opening that the lock beam of the padlock and the lock hook of the hasp lock cannot pass through. Figure 3 As shown in (b), when the closing plate 12 moves to the right, the end of the first long hole 20 of the locking plate 18 opens as a hole 20b at the left end of the closing plate 12. The hole 20b is also a small opening that the lock beam of the padlock and the lock hook of the hasp lock cannot pass through.

[0042] like Figure 1 As shown, the handle locking device 2 of the above structure is installed on the circuit breaker 1 by inserting the grip portion 8 into the hole portion 24a of the retaining portion 22, screwing the power side mounting screw 14 of the power side connecting portion 13 into the power side engaging portion of the circuit breaker 1 arranged in the panel of the distribution board, and screwing the load side mounting screw 16 of the load side connecting portion 15 into the load side engaging portion of the circuit breaker 1.

[0043] Figure 1 and Figure 4 Indicates that the grip portion 8 of the circuit breaker 1 is in the OFF position 8 OFF As shown in the figure, the OFF position 8 OFF The gripper portion 8 is inserted into the hole portion 24a and is in the OFF position. OFF The grip portion 8 and the holding portion 22 of the handle holding member 11 are located Figure 1 At this time, the first locking hole 19 of the locking plate 18 is connected to the second locking hole 23 of the sliding part 21, and the lock beam 27a can be inserted through the first locking hole 19 and the second locking hole 23 to hook the padlock 27. Figure 4As shown, the closing plate 12 closes most of the first long hole 20 of the locking plate 18, and at the end side on the right side of the closing plate 12, a part of the first long hole 20 is opened as a hole portion 20a, but as mentioned above, it is a small hole portion 20a through which the lock beam of the padlock and the lock hook of the hasp lock cannot pass.

[0044] in addition, Figure 5 and Figure 6 Indicates that the grip portion 8 of the circuit breaker 1 is in the ON position 8 ON Configuration of the handle locking device 2 when.

[0045] When the holding portion 22 of the handle holder 11 passes through the ON position 8 of the grip portion 8 ON Towards Figure 6 When the right side of the padlock 18 is moved, the first locking hole 19 of the locking plate 18 is not connected to the second locking hole 23 of the sliding portion 21, and the padlock cannot be locked. Figure 6 As shown, the closing plate 12 closes most of the first long hole 20, and at the end side on the left side of the closing plate 12, a part of the first long hole 20 is opened as a hole portion 20b, but as mentioned above, it is a small hole portion 20b through which the lock beam of the padlock and the lock hook of the hasp lock cannot pass.

[0046] Therefore, the handle locking device 2 of the present embodiment is only activated when the grip portion 8 of the circuit breaker 1 is moved to the OFF position 8. OFF When the lock is in the state of being locked, the first locking hole 19 of the locking plate 18 and the second locking hole 23 of the sliding part 21 are connected, so the lock beam 27a of the padlock 27 can be hooked and locked, and the hole portion of the lock beam where the padlock is easily installed by mistake (such as the first long hole 20 of the locking plate 18) is closed by the closing plate 12, so the operation safety can be improved.

[0047] In addition, in the present embodiment, an embodiment in which the lock beam 27a of the padlock 27 is hooked on the first locking hole 19 of the connected locking plate 18 and the second locking hole 23 of the sliding portion 21 for locking is described, but even in the case of locking by hooking the lock hook of the hasp lock on the connected first locking hole 19 and second locking hole 23, the hole portion (for example, the first long hole 20 of the locking plate 18) into which the lock hook of the hasp lock is easily mistakenly installed is closed by the closing plate 12, so that the operating safety can be improved.

[0048] [Second embodiment]

[0049] then, Figures 7 to 14 The structure of the handle locking device 30 according to the second embodiment mounted on the circuit breaker 1 is shown.

[0050] like Figure 7 (a), (b) and Figure 8As shown, the handle locking device 30 has a closing frame 31 formed of a metal sheet, a handle holder 32 and a locking plate 33 .

[0051] The closed frame 31 has a pair of first frames 31a, 31b and a pair of second frames 31c, 31d connected at both ends of the pair of first frames 31a, 31b in the long-side direction and extending parallel to each other, and is provided with a rectangular opening 31e surrounded by the pair of first frames 31a, 31b and the pair of second frames 31c, 31d. On the side of the second frame 31c of the closed frame 31, there are provided: a power supply side connection portion 34 having a through hole; and a power supply side mounting screw 35 whose head engages with the power supply side connection portion 34 and is inserted into the through hole. In addition, on the side of the second frame 31d of the closed frame 31, there are also provided: a load side connection portion 36 having a through hole; and a load side assembly screw 37 whose head engages with the load side connection portion 36 and is inserted into the through hole.

[0052] like Figure 7 As shown in (b), a locking plate 38 stands continuously from the edge of the opening 31e side in a first frame 31a of the closed frame 31. The locking plate 38 has a first locking hole 39 and a first long hole 40 formed along the direction in which the first frame 31a extends.

[0053] like Figure 7 As shown in (a), the handle holder 32 is a member having a sliding portion 41 and a holding portion 42 in a rectangular shape orthogonal to each other, which is formed by bending a metal flat plate into an L shape. A second locking hole 43 having the same hole shape as the first locking hole 19 of the locking plate 18 is formed in the sliding portion 41, and a second long hole 44 extending in the long side direction of the sliding portion 41 is formed continuously from a part of the second locking hole 43. An engaging portion 42a surrounding the periphery of the grip portion 8 is formed in the holding portion 42.

[0054] Furthermore, the first sliding pin 45 is inserted into the first long hole 40 from the locking plate 38 side. The head of the first sliding pin 45 is engaged with the opening peripheral edge of the first long hole 40, and the front end of the first sliding pin 45 passes through the sliding portion 41 and is fixed to the sliding portion 41 by riveting. In addition, the second sliding pin 46 is inserted into the second long hole 44 from the sliding portion 41 side. The head of the second sliding pin 46 is engaged with the opening peripheral edge of the second long hole 44, and the front end of the second sliding pin 46 passes through the locking plate 38 and is fixed to the locking plate 38 by riveting.

[0055] exist Figure 8 The component indicated by the dotted line in FIG. 1 is the locking plate 33 disposed between the locking plate 38 and the sliding portion 41. Fig. 9 As shown, the lock plate 33 has an axial hole 33a, a slit 33b formed on a straight line passing through the center of the axial hole 33a, and an engaging protrusion 33c protruding outward. In addition, the shaft portion of the present invention corresponds to the axial hole 33a.

[0056] like Figure 8 As shown in FIG. 1 , the closing plate 33 is arranged between the locking plate 38 and the sliding portion 41 in such a manner that the second sliding pin 46 is inserted into the shaft hole 33a, the first sliding pin 45 is inserted into the slit 33b, and the engaging protrusion 33c protrudes toward the second locking hole 43. Figure 8 When the position moves to the right, the first sliding pin 45 also moves to the right in the long side direction of the first long hole 40. When the first sliding pin 45 moved to the right contacts the slit 33b of the closing plate 33, the closing plate 33 rotates counterclockwise around the second sliding pin 46 as the rotation center.

[0057] In addition, the second slide pin 46 may be integrally provided in a part of the shaft hole 33 a of the closing plate 33 .

[0058] The handle locking device 30 of the above structure is as follows Fig.10 As shown, by engaging the grip portion 8 with the engaging portion 42a of the retaining portion 42, screwing the power side mounting screw 35 of the power side connecting portion 34 into the power side engaging portion of the circuit breaker 1 arranged in the panel of the distribution board, and screwing the load side mounting screw 37 of the load side connecting portion 36 into the load side engaging portion of the circuit breaker 1, the circuit breaker 1 is installed.

[0059] Fig.10 and Fig.11 Indicates that the grip portion 8 of the circuit breaker 1 is in the OFF position 8 OFF As shown in the figure, the OFF position 8 OFF The gripper portion 8 is engaged with the engagement portion 42a, and is in the OFF position. OFF The grip portion 8 and the holding portion 42 of the handle holder 32 are located Fig.11 At this time, the first locking hole 39 of the locking plate 38 is connected to the second locking hole 43 of the sliding portion 41 , and the lock beam 27 a is inserted through the first locking hole 39 and the second locking hole 43 and hooked on the padlock 27 .

[0060] in addition, Fig.12 and Fig.13 Indicates that the grip portion 8 of the circuit breaker 1 is in the ON position 8 ON The configuration of the handle locking device 2 when the handle portion 8 is in the ON position 8 ON Move the holding portion 42 of the handle holder 32 to Fig.13 When the padlock is on the right side, the first locking hole 39 of the locking plate 38 is not connected to the second locking hole 43 of the sliding portion 41, and the padlock cannot be locked.

[0061] then, Fig.14 Regarding the handle lock device 30 of this embodiment, Fig.11 The following describes a case where the circuit breaker 1 is locked using the padlock 27 having a large diameter of the locking beam 27a and the small padlock 47 having a small diameter of the locking beam 47a. OFF The gripper 8 (refer to Fig.11 ) moves to the ON position 8 ON side( Fig.14 When the handle holder 32 is turned to the right side Fig.14 The first sliding pin 45 connected to the handle holder 32 also moves to the right side of the first long hole 40 until the peripheral edge of the second locking hole 43 of the sliding portion 41 is engaged with the locking beam 47a. Here, when the handle holder 32 moves further to the right side and the first sliding pin 45 also moves to the position indicated by the reference numeral 45P (grip portion switching position), there is an OFF position 8. OFF The gripper 8 is switched to the ON position 8 by the operation of the toggle link mechanism. ON situation.

[0062] The handle lock device 30 of the present embodiment is turned off when the grip portion 8 is in the OFF position 8. OFF To the ON position 8 ON side( Fig.14 When the first sliding pin 45 moves to the right side of the first long hole 40, it contacts the slit 33b of the closing plate 33, and the closing plate 33 rotates counterclockwise around the second sliding pin 46. The locking protrusion 33c of the closing plate 33 rotating counterclockwise contacts a part of the lock beam 47a of the padlock 47. ON The counterclockwise rotation of the closing plate 33 is also restricted, and the first slide pin 45 can be restricted from moving to the gripper switching position 45P. Thus, the gripper 8 is restricted from switching to the ON position 8. ON The holding portion 42 of the handle holder 32 is moved to the position.

[0063] Therefore, the handle locking device 30 of the present embodiment can be locked even when the grip portion 8 is moved from the OFF position 8 to the locked position using the small padlock 47 having a small diameter of the lock beam 47a. OFF To the ON position 8 ON The side movement can also be limited until the closing plate 33 switches to the ON position 8 ON The movement of the gripper portion 8 to the position of the workpiece can improve the safety of the work.

[0064] In addition, the handle locking device 30 of the present embodiment is similar to the first embodiment, and only when the grip portion 8 of the circuit breaker 1 is moved to the OFF position 8 OFFWhen the first locking hole 39 of the locking plate 38 is connected to the second locking hole 43 of the sliding portion 41, the locking beam 27a of the padlock 27 (or the locking beam 47a of the padlock 47) can be hooked to perform locking, thereby improving the safety of the operation.

[0065] In addition, in the second embodiment Fig.11 In the embodiment of locking by hooking the lock beam 27a of the padlock 27 in the first locking hole 39 of the connected locking plate 38 and the second locking hole 43 of the sliding portion 41, the same effect can be achieved even when locking by hooking the lock hook of the hasp lock in the first locking hole 39 and the second locking hole 43.

[0066] Furthermore, in the second embodiment Fig.14 In the above description, the handle locking device 30 uses a small padlock 47 having a small diameter of the lock beam 47a to lock the circuit breaker 1. However, even if the handle locking device 30 is locked by hooking a small-shaped hasp lock hook in the connected first locking hole 39 and second locking hole 43, the handle locking device 30 is locked by the lock beam 47a. ON The movement of the gripper portion 8 to the position of the handle can also improve the safety of the operation.

[0067] Description of Reference Numerals

[0068] 1 Circuit breaker

[0069] 2 Handle locking device

[0070] 4 Main body shell

[0071] 4a Base

[0072] 4b Cover (housing)

[0073] 4c Opening

[0074] 5 Power supply side terminal

[0075] 6 Load side terminal

[0076] 7a, 7b threaded holes

[0077] 8. Grip

[0078] 8 OFF OFF position of the gripper

[0079] 8 ON Grip ON position

[0080] 10 Closed frame

[0081] 10a, 10b first frame

[0082] 10c, 10d second frame

[0083] 10e Opening

[0084] 11 Handle holder

[0085] 12 Closing plate

[0086] 13 Power supply side connection

[0087] 14 Power supply side mounting screw

[0088] 15 Load side connection

[0089] 16 Load side mounting screws

[0090] 18 Locking plate

[0091] 19 First locking hole

[0092] 20 First slotted hole

[0093] 21 Sliding part

[0094] 22. Holding unit

[0095] 23 Second locking hole

[0096] 24a Hole

[0097] 24b Engagement protrusion

[0098] 25 Second long hole

[0099] 26a, 26b sliding pin

[0100] 30 Handle locking device

[0101] 31 Closed Frame

[0102] 31a, 31b first frame

[0103] 31c, 31d second frame

[0104] 31e Opening

[0105] 32 Handle holder

[0106] 33 Closing plate

[0107] 33a Shaft hole (shaft)

[0108] 33b Gap

[0109] 33c Engagement protrusion

[0110] 34 Power supply side connection

[0111] 35 Power supply side mounting screw

[0112] 36 Load side connection

[0113] 37 Load side mounting screw

[0114] 38 Locking plate

[0115] 39 First locking hole

[0116] 40 First slotted hole

[0117] 41 Sliding part

[0118] 42. Holding unit

[0119] 42a Engagement portion

[0120] 43 Second locking hole

[0121] 44 Second long hole

[0122] 45 First sliding pin

[0123] 45P Gripper switching position

[0124] 46 Second sliding pin

[0125] 47 Small padlock

[0126] 47a Small diameter shackle.

Claims

1. A handle locking device capable of locking a grip portion of a rocker-type opening and closing operating handle protruding from the upper surface of a housing of a circuit breaker in an OFF position, characterized in that: include: A locking plate installed on the upper surface of the housing is formed with a first locking hole and a first long hole is formed along the moving direction of the gripper portion. a handle holder having a sliding portion formed with a second locking hole and a holding portion holding the grip portion; and a closing plate formed with a second elongated hole, By inserting a sliding pin through the first long hole of the locking plate and the second long hole of the closing plate to connect the sliding pin to the sliding portion, the handle holder and the closing plate can be supported on the locking plate in a manner that they can slide in the moving direction of the grip portion. In the OFF position of the gripper, the second locking hole of the sliding part is connected to the first locking hole of the locking plate and can be hooked with a lock beam of a padlock or a lock hook of a hasp lock. In the ON position of the gripper, the second locking hole is closed by the locking plate, Furthermore, the closing plate can move in the moving direction of the gripper portion while closing the first long hole of the locking plate.

2. A handle locking device capable of locking a grip portion of a rocker-type opening and closing operating handle protruding from the upper surface of a housing of a circuit breaker in an OFF position, characterized in that: include: A locking plate installed on the upper surface of the housing is formed with a first locking hole and a first long hole is formed along the moving direction of the gripper portion. a handle holder having a sliding portion formed with a second locking hole and a second long hole communicating with the second locking hole, and a holding portion for holding the grip portion; and A closing plate is formed with a shaft portion, By inserting a first sliding pin into the first long hole of the locking plate to connect the first sliding pin to the sliding portion, and inserting a second sliding pin into the second long hole and the shaft portion to connect the second sliding pin to the locking plate, the handle holder can be supported on the locking plate in a manner that it can slide in the moving direction of the grip portion, and the closing plate can be supported on the locking plate in a manner that it can rotate around the shaft portion. In the OFF position of the gripper, the second locking hole of the sliding part is connected to the first locking hole of the locking plate and can be hooked with a lock beam of a padlock or a lock hook of a hasp lock. In the ON position of the gripper, the second locking hole is closed by the locking plate, Furthermore, when the grip portion moves from the OFF position to the ON position, the closing plate can rotate around the shaft portion due to the first slide pin, and a portion of the first locking hole is closed by the closing plate.

Images