JP5570402B2 - Multipole circuit breaker - Google Patents

Description

  The present invention relates to a multipolar circuit breaker configured by connecting a plurality of single-pole circuit breakers, and more particularly to an operation handle lock device thereof.

  Conventionally, a multi-pole circuit breaker configured by arranging a plurality of single-pole circuit breakers in a multi-pole arrangement is formed by connecting the operation handles of each arranged single-pole circuit breaker with an interlocking pin and a connecting bar, And an operating handle lock device that prevents the circuit breaker from being inadvertently switched from an off state to an on state or from an on state to an off state by a locking clip provided between the connecting bar and the connecting bar (for example, , See Patent Document 1).

JP-A-5-20996

  The multi-pole circuit breaker having the conventional operation handle lock device configured as described above requires a locking clip in addition to the interlocking pin and the connecting bar in order to lock the operation handle. In addition to the circuit breaker, an additional member for configuring the operation handle lock device is required.

  The present invention has been made to solve the above-mentioned problems in the conventional multipole circuit breaker, and can lock the operation handle without providing additional members required by the conventional apparatus. The purpose is to obtain a simple multipole circuit breaker.

The multipolar circuit breaker according to the present invention is a multipolar circuit breaker including a handle lock device that locks a plurality of operation handles provided side by side. The handle lock device is installed between the plurality of operation handles. The operation bar is constrained integrally, and the connection bar is configured to be movable with respect to the operation handle, the first fixing and holding means fixed to the connection bar, and the multipolar circuit breaker. A second fixing and holding means that can be engaged with the first fixing and holding means, and the first fixing and holding means and the second fixing and holding means are in a disengaged state. Then, by moving the connecting bar in a predetermined direction, the first fixed holding means and the second fixed holding means are engaged to lock the plurality of operation handles, and the first fixed holding means When When the second fixed holding means is in the engaged state, the first fixed holding means and the second fixed holding means are engaged by moving the connecting bar in a direction opposite to the predetermined direction. In the multi-pole circuit breaker configured to release the lock of the plurality of operation handles , both ends of the circuit breaker are provided with connecting pins that are respectively fixed to opposite side surfaces of the plurality of operation handles. The connection bar includes a connection hole that is penetrated by the connection pin, and the connection hole allows the connection bar to move in the predetermined direction and in a direction opposite to the predetermined direction with respect to the connection pin. It is characterized by being formed .
The song circuit breaker according to the present invention is a multi-pole circuit breaker provided with a handle lock device for locking a plurality of operation handles provided side by side, wherein the handle lock device is interposed between the plurality of operation handles. A connection bar that is installed and restrains these operation handles integrally, and is configured to be movable with respect to the operation handle, a first fixing holding means fixed to the connection bar, and the multipolar circuit breaker Provided with a second fixing and holding means that can be engaged with the first fixing and holding means, wherein the first fixing and holding means and the second fixing and holding means are in a disengaged state. At a certain time, the plurality of operation handles are locked by moving the connecting bar in a predetermined direction to engage the first fixed holding means and the second fixed holding means, and the first fixed holding means means When the second fixing / holding means is in an engaged state, the engagement between the first fixing / holding means and the second fixing / holding means is performed by moving the connecting bar in a direction opposite to the predetermined direction. A multi-pole circuit breaker configured to release the lock of the plurality of operation handles by disengaging the plurality of operation handles, including a connection pin that passes through the connection bar and is fixed thereto. Is provided with handle holes that respectively engage with both end portions of the connection pin on at least side surfaces facing each other, and the handle hole is connected to the connection pin in the predetermined direction and in a direction opposite to the predetermined direction. It is characterized by being formed so that the bar can be moved.
Furthermore, the multipolar circuit breaker according to the present invention is a multipolar circuit breaker provided with a handle lock device for locking a plurality of operation handles provided side by side, wherein the handle lock device is provided between the plurality of operation handles. A connecting bar configured to be fixed to the operating handle and to be movable with respect to the operating handle; a first fixing and holding means fixed to the connecting bar; and the multipolar circuit. A second fixing / holding means provided in a case of the circuit breaker and capable of engaging with the first fixing / holding means, wherein the first fixing / holding means and the second fixing / holding means are disengaged. The first fixing and holding means and the second fixing and holding means are engaged with each other by moving the connecting bar in a predetermined direction to lock the plurality of operation handles, and the first fixing and holding means are engaged. Holding hand And the second fixing and holding means are engaged with each other by moving the connecting bar in a direction opposite to the predetermined direction, thereby engaging the first fixing and holding means with the second fixing and holding means. In the multipolar circuit breaker configured to release the lock and unlock the plurality of operation handles, the cross-sections in which both ends are fixed to the opposite side surfaces of the plurality of operation handles are circular The formed connection pins, the rotation stoppers formed on the side surfaces of the connection bar facing the operation handle, and the rotation stoppers formed on the opposite side surfaces of the plurality of operation handles, respectively. A rotation stop portion that engages with a portion, and the connection bar includes a connection hole that is penetrated by the connection pin, and the connection hole is in the predetermined direction and the predetermined direction with respect to the connection pin. And it is characterized in that it is formed so as to allow movement of the connecting bar in the direction.
A multi-pole circuit breaker equipped with a handle lock device that locks a plurality of operation handles provided together,
Further, in the multipolar circuit breaker according to the present invention, the handle lock device is installed between the plurality of operation handles to constrain these operation handles integrally and to be movable with respect to the operation handle. A connecting bar, a first fixing and holding means fixed to the connecting bar, and a second fixing and holding means provided in a case of the multipole circuit breaker and capable of engaging with the first fixing and holding means. When the first fixing and holding means and the second fixing and holding means are in a disengaged state, the first fixing and holding means and the first fixing means are moved by moving the connecting bar in a predetermined direction. The plurality of operation handles are locked by engaging the two fixing holding means, and when the first fixing holding means and the second fixing holding means are in the engaged state, the connecting bar is Reverse to direction In the multipolar circuit breaker configured to release the engagement of the plurality of operation handles by releasing the engagement between the first fixed holding means and the second fixed holding means. A connecting pin having a circular cross section that passes through the connecting bar and is fixed to the connecting bar, and is formed on opposite side surfaces of the plurality of operation handles, and engages with both ends of the connecting pin, respectively. A handle hole, a rotation stop portion formed on each side surface of the connecting bar facing the operation handle, and a rotation stop portion formed on each side surface of the plurality of operation handles facing each other. A rotation stop to engage;
The handle hole is formed so as to allow the connection bar to move in the predetermined direction and in a direction opposite to the predetermined direction with respect to the connection pin.

  According to the multipolar circuit breaker according to the present invention, the handle lock device is installed between the plurality of operation handles to constrain these operation handles integrally, and is configured to be movable with respect to the operation handles. A first fixing and holding means fixed to the connecting bar; and a second fixing and holding means provided in a case of the multipolar circuit breaker and capable of engaging with the first fixing and holding means. And when the first fixed holding means and the second fixed holding means are in a disengaged state, the first fixed holding means and the second fixed bar are moved by moving the connecting bar in a predetermined direction. The plurality of operation handles are locked by engaging with the fixed holding means, and when the first fixed holding means and the second fixed holding means are in the engaged state, the connecting bar is moved in the predetermined direction. Move in the opposite direction to By doing so, it is configured to release the engagement between the first fixed holding means and the second fixed holding means to release the lock of the plurality of operation handles. The operation handle can be locked.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a multipolar circuit breaker according to Embodiment 1 of the present invention in a state in which a handle lock is released. 1 is an exploded perspective view of a handle lock device in a multipolar circuit breaker according to Embodiment 1 of the present invention. FIG. It is sectional drawing which shows the principal part of the handle lock apparatus in the multipolar circuit breaker by Embodiment 1 of this invention in the state which released the handle lock. It is a perspective view which shows the multipolar circuit breaker by Embodiment 1 of this invention in the state which locked the handle | steering-wheel.

It is sectional drawing which shows the principal part of the handle lock apparatus in the multipolar circuit breaker by Embodiment 1 of this invention in the state which locked the handle. It is a disassembled perspective view of the handle lock apparatus in the multipolar circuit breaker by Embodiment 2 of this invention. It is a disassembled perspective view of the handle lock apparatus in the multipolar circuit breaker by Embodiment 3 of this invention. It is a disassembled perspective view of the handle lock apparatus in the multipolar circuit breaker by Embodiment 4 of this invention.

Embodiment 1 FIG.
1A and 1B are perspective views showing a state before the handle lock of the multipolar circuit breaker according to Embodiment 1 of the present invention, in which FIG. 1A shows a state in which the operation handle is in an off position, and FIG. 1B shows an operation handle. Shows a state in which is in the ON position. FIG. 2 is an exploded perspective view of the handle lock device in the multipolar circuit breaker according to Embodiment 1 of the present invention. FIG. 3 is a cross-sectional view showing the main part of the handle lock device in the multipolar circuit breaker according to Embodiment 1 of the present invention before the handle is locked.

  1 to 3, the multipolar circuit breaker 100 is configured by combining two single-pole circuit breakers 101 and 102 together with their side portions in close contact with each other. Each single-pole circuit breaker 101, 102 has in its breaker case 1 a fixed contact, a movable contact provided with a movable contact that contacts or separates from this fixed contact, and an open / close that drives the movable contact And an operation handle 20 for manually operating the opening / closing mechanism from the outside of the circuit breaker case 1. In order to avoid complication, in the drawings, the same constituent parts of the single-pole circuit breakers 101 and 102 are denoted only by the constituent parts of one single-pole circuit breaker.

  The handle lock device provided in the multipole circuit breaker 100 is interlocked with each operation handle 20 provided with the handle portion 21 protruding through the opening 1a of the breaker case 1 of the single pole circuit breakers 101 and 102. The pin 40 and the connection bar 30 are comprised.

  The handle portion 21 of the operation handle 20 includes a first handle hole 21a1 and a second handle hole 21a2 that are opened on both side surfaces thereof and provided on the same axis. These handle holes 21a1, 21a2 are each formed as a bottomed hole. The connecting bar 30 includes a pair of connecting hole portions 31a1 and 31a2 having a substantially oval cross section and a narrow portion 31b that connects the connecting hole portions 31a1 and 31a2 to each other. The pair of connecting hole portions 31a1, 31a2 and the narrow portion 31b constitute a connecting hole. Further, a fixed holding convex portion 32 which is a first fixed holding portion having a notch 33 is integrally formed on the lower side portion of the connecting bar 30 in the figure. As will be described later, the fixed holding convex portion 32 is for locking the operation handle 20, and the notch portion 33 is for releasing the lock of the operation handle 20.

  The connection pin 40 is formed in an oval shape whose cross section substantially matches the cross-sectional shape of each of the pair of connection holes 31a1 and 31a2 described above. The connection pin 40 passes through one connection hole 31 a 2 provided in the connection bar 30, and one end of the connection pin 40 is formed in the first handle hole 21 a 1 formed in the handle portion 21 of one single-pole circuit breaker 102. The other end is inserted into a first handle hole formed in the handle portion of the other single-pole circuit breaker 101. The connection pin 40 is restricted from moving in the axial direction by the bottom of each handle hole 21a1 into which both ends thereof are inserted, and is prevented from falling off the connection bar 30.

  Further, as will be described later, the connecting pin 40 can be slid within the narrow portion 31b and moved into the connecting hole 31a1 from the state inserted in the connecting hole 31a2. Conversely, from the state of being inserted into the connecting hole 31a1, the inside of the narrow portion 31b can be slid and moved into the connecting hole 31a1. As described above, the connecting pin 40 and the connecting hole portions 31a1 and 31a2 are formed in the shape of an ellipse, and the connecting bar 30 is prevented from rotating around the connecting pin 40.

  The breaker case 1 of each single-pole circuit breaker 101, 102 is formed with fixed holding recesses 10a1, 10a2, which are fixed holding portions of a pair of steps 2 for fitting and holding the fixed holding convex portion 32 of the connecting lever 30. One fixed holding concave portion 10a1 is formed at a position facing the fixed holding convex portion 32 of the connecting bar 30 when the operation handle 20 is in the off position shown in FIG. The fixed holding concave portion 10a2 is formed at a position facing the fixed holding convex portion 32 of the connecting bar 30 when the operation handle 20 shown in FIG.

  The multipolar circuit breaker 100 according to the first embodiment of the present invention shown in FIGS. 1 and 3 shows a state before the handle lock as described above. In this state, the connection pin 40 passes through one connection hole 31a1 of the connection bar 30 of the handle lock device, and both ends thereof are fitted into one handle hole 21a1 of the handle portion 21 of each operation handle 20. ing. As a result, the fixed holding convex portion 32 of the connecting bar 30 is pulled upward with respect to the pair of fixed holding concave portions 10a1, 10a2, and is in a position where it cannot be fitted into any of the fixed holding concave portions 10a1, 10a2. .

  Therefore, by manually operating the handle portion 21, the operation handle 20 is moved from the off position shown in FIG. 1 (a) to the on position shown in (b) to turn on the multipole circuit breaker 100, or The multipole circuit breaker 100 can be turned off by moving from the ON position shown in FIG. 1B to the OFF position shown in FIG.

  Next, the case where the handle lock of the multipole circuit breaker 100 is performed will be described. FIGS. 4A and 4B are perspective views showing the multi-pole circuit breaker according to Embodiment 1 of the present invention with the handle locked, wherein FIG. 4A is a state in which the operation handle is in an off position, and FIG. The state in the position is shown. FIG. 5 is a cross-sectional view showing the main part of the handle lock device in the multipolar circuit breaker according to Embodiment 1 of the present invention in a state where the handle is locked, and (a) is a state where the operation handle is in the off position , (B) shows a state where the operation handle is in the on position.

  In the state where the operation handle 20 shown in FIG. 1A is in the off position, when performing the hand lock, the connecting bar 30 in the position of FIG. The connecting pin 40 is moved from the connecting hole portion 31a2 of the connecting bar 30 through the narrow portion 31b into the connecting hole portion 31a1. Thereby, the connection bar 30 slides downward in the drawing, and the fixed holding convex portion 32 is inserted into the fixed holding concave portion 10 a 1 of the circuit breaker case 1. As a result, the operation handle 20 is locked in the off position and cannot be moved to the on position. That is, this state is shown in (a) of FIG. 4 and (a) of FIG.

  When hand lock is performed in a state where the operation handle 20 shown in FIG. 1B is in the ON position, the connecting bar 30 in the position shown in FIG. The pin 40 is moved from the connecting hole portion 31a2 of the connecting bar 30 through the narrow portion 31b into the connecting hole portion 31a1. Thereby, the connection bar 30 slides downward in the figure, and the fixed holding convex portion 32 is inserted into the fixed holding concave portion 10 a 2 of the circuit breaker case 1. As a result, the operation handle 20 is locked in the on position and cannot be moved to the off position. That is, this state is shown in (b) of FIG. 4 and (b) of FIG.

  Also, when the operation handle 20 is moved from the OFF position to the ON position to lock the handle after the multi-pole circuit breaker 100 is turned from OFF to ON, and when the operation handle 20 is moved from the ON position to the OFF position. When the multi-pole circuit breaker 100 is moved from the ON position to the OFF position and then the handle is locked, the operation handle 20 is moved to the respective positions described above, and then the connection bar 30 is moved to the respective positions as described above. The handle is locked by depressing.

  Next, the case where the handle lock shown in FIGS. 1 and 3 is released from the state of the handle lock shown in FIGS. 4 and 5 will be described. In this case, an operation opposite to that in the case where the handle is locked from the state where the handle lock is released is performed. That is, the connecting bar 30 at the position of the handle lock shown in FIGS. 4 and 5 is pulled up in the notch 33 of the connecting bar 30 by inserting a tip of a flathead screwdriver or the like, and the connecting pin 40 is connected to the connecting bar. The gap portion 31b is passed through the 30 connecting hole portions 31a1 and moved into the connecting hole portion 31a2. As a result, the connecting bar 30 slides upward in the drawing, and the fixed holding convex portion 32 is detached from the fixed holding concave portion 10a2 or 10a1 of the circuit breaker case 1. As a result, the operation handle 20 is released from the handle lock in the on or off position.

  Whether the multi-pole circuit breaker 100 is handle-locked by the handle lock device or the handle lock is released depends on whether the upper end surface of the connecting bar 30 is flush with the upper end surface of the handle portion 21 of the operation handle 20. It can be judged by. That is, when the handle is locked, as shown in FIGS. 4 and 5, the upper end surface of the connecting bar 30 is located below the upper end surface of the handle portion 21 and they are not on the same plane. If the lock is released, the upper end surface of the connecting bar 30 is in the same plane as the upper end surface of the handle portion 21, so that it can be determined whether or not the handle is locked.

  As described above, according to the multipolar circuit breaker according to Embodiment 1 of the present invention, the operation handle 20 of the circuit breaker can be restrained with a simple configuration that does not require an additional member. Further, by making the dimension in the thickness direction of the connecting bar 30 the same as the dimension in the thickness direction of the handle portion 21 of the operation handle 20, the outer shape when the circuit breaker is connected can be made compact. Further, since the operation handle can be locked only by sliding the connecting bar 30, a cover for locking the operation handle of each single-pole circuit breaker is not required as in the conventional device.

Embodiment 2. FIG.
Next, a multipolar circuit breaker according to Embodiment 2 of the present invention will be described. In the first embodiment, the connection bar 30 is provided with a pair of connection holes 31a1 and 31a2 that are formed in a substantially oval cross section and connected to each other by the narrow portion 31b. The handle portion of the handle 20 has a substantially oval cross section, and a pair of handle hole portions connected to each other by a narrow portion.

  FIG. 6 is an exploded perspective view of the handle lock device in the multipolar circuit breaker according to Embodiment 2 of the present invention. In FIG. 6, the handle portion 21 of the operation handle 20 has a pair of handle hole portions 21 a 11 and 21 a 12 having a substantially oval cross section, and a narrow portion 21 b 1 that connects the handle hole portions 21 a 11 and 21 a 12 to each other. And a pair of handle hole portions 21a21 and 21a22 each having a substantially oval cross section, and a narrow portion 21b2 for connecting the handle hole portions 21a21 and 21a22 to each other. The pair of handle hole portions 21a11 and 21a12 and the narrow portion 21b1 constitute a first handle hole. Further, the pair of handle hole portions 21a21, 21a22 and the narrow portion 21b2 constitute a second handle hole.

  The handle hole portions 21a11, 21a12 and the narrow portion 21b1 constituting the first handle hole are opened on one side surface portion of the handle portion 21, and the handle hole portions 21a21, 21a22 and the narrow portion constituting the second handle hole are formed. The part 21b2 is open to the other side part of the handle part 21. These handle hole portions 21a11 and 21a12, the narrow portion 21b1, and the handle hole portions 21a21 and 21a22 and the narrow portion 21b2 are each formed as a bottomed hole.

  The connection bar 30 includes a connection hole 31 having a substantially oval cross-sectional shape. The connection hole 30 is provided so as to penetrate from one side surface portion of the connection bar 30 to the other side surface portion. The connection pin 40 is formed in an oval shape whose cross section substantially matches the cross-sectional shape of the connection hole 31 described above. The connection pin 40 passes through the connection hole 31 provided in the connection bar 30, and one end of the connection pin 40 is a handle hole portion 21 a 11 in the first handle hole formed in the handle portion 21 of one single-pole circuit breaker 102. Or it is inserted in 21a12, and the other end is inserted in one handle hole portion in the first handle hole formed in the handle portion of the other single-pole circuit breaker 101. The connecting pin 40 is restricted from moving in the axial direction by the bottom of each first handle hole into which both ends thereof are inserted, and is prevented from falling off the connecting bar 30. Other configurations are the same as those in the first embodiment.

  As in the case of the first embodiment, the multipole circuit breaker according to the second embodiment of the present invention is brought into the handle lock state by pushing down the connecting bar 30 in the handle lock release state. By pulling up the connecting bar 30 in the released state, the handle can be locked. When the operation handle 20 of the multipolar circuit breaker 100 is in the on position or in the off position, the operation of the handle lock and the release of the handle lock is the same as in the first embodiment.

  However, in the case of the second embodiment, as the connecting bar 30 is pushed down or pulled up, the connecting pin 40 is moved from one handle hole 21a11 in the first handle hole of the handle 21 of the operation handle 20 to the other handle. The point of sliding to the hole 21a12 or from the other handle hole 21a12 to the one handle hole 21a12 via the narrow portion 21b1 is different from the case of the mobile phone 1 of the embodiment.

  Whether the multi-pole circuit breaker 100 is handle-locked by the handle lock device or the handle lock is released is the same as in the first embodiment, the upper end surface of the connecting bar 30 is the handle portion 21 of the operation handle 20. It can be judged by whether or not it is in the same plane as the upper end surface of the. That is, when the handle is locked, as shown in FIGS. 4 and 5, the upper end surface of the connecting bar 30 is located below the upper end surface of the handle portion 21 and they are not on the same plane. If the lock is released, the upper end surface of the connecting bar 30 is in the same plane as the upper end surface of the handle portion 21, so that it can be determined whether or not the handle is locked.

  As described above, according to the multipolar circuit breaker according to Embodiment 2 of the present invention, the operation handle 20 of the circuit breaker can be restrained with a simple configuration that does not require an additional member. Further, by making the dimension in the thickness direction of the connecting bar 30 the same as the dimension in the thickness direction of the handle portion 21 of the operation handle 20, the outer shape when the circuit breaker is connected can be made compact. Further, since the operation handle can be locked only by sliding the connecting bar 30, a cover for locking the operation handle of each single-pole circuit breaker is not required as in the conventional device.

Embodiment 3 FIG.
Next, a multipolar circuit breaker according to Embodiment 3 of the present invention will be described. In the multipolar circuit breakers of the first and second embodiments, the cross section of the interlocking pin 40 has a long hole shape so that the connecting bar 30 does not rotate. The cross section has a round shape with better workability than the long hole shape, and the connection bar 30 is prevented from rotating.

  FIG. 7 is an exploded perspective view of the handle lock device in the multipolar circuit breaker according to Embodiment 3 of the present invention. In FIG. 7, the connecting pin 40 has a circular cross section. The connecting bar 30 includes a pair of connecting hole portions 31a1 and 31a2 having a circular cross section and a narrow portion 31b that connects the connecting hole portions 31a1 and 31a2 to each other. The pair of connecting hole portions 31a1, 31a2 and the narrow portion 31b constitute a connecting hole. Further, a pair of anti-rotation protrusions 34a1 and 34a2 constituting the first anti-rotation protrusion and a pair of anti-rotation protrusions 34b1 constituting the second anti-rotation protrusion are provided at both end portions of the connecting bar 30. , 34b2 are formed.

  A pair of rotation stop recesses 21c1 and 21c2 constituting a first rotation stop recess and a pair of rotation stop recesses 21b1 forming a second rotation stop recess (see FIG. 21b2 is formed. The pair of rotation stop recesses 21c1 and 21c2 constituting the first rotation stop recess are slidably engaged with the pair of rotation stop projections 34b1 and 34b2 constituting the second rotation stop projection of the connecting bar 30, respectively. To do. And the dimension of the length direction of each rotation stop recessed part 21c1, 21c2, 21b1, 21b2 is formed in the dimension which enables the connection bar | burr 30 to slide at the time of the above-mentioned handle lock or release of a handle lock.

  As in the case of the first embodiment, the handle portion 21 of the operation handle 20 has a first handle hole 21a1 and a second handle hole 21a2 that are respectively opened on both side surfaces and provided on the same axis. I have. These handle holes 21a1, 21a2 are each formed as a bottomed hole.

  A pair of anti-rotation projections 34a1 and 34a2 constituting the first anti-rotation projection of the connecting bar 30 are respectively formed into a pair of anti-rotation recesses constituting the first anti-rotation recess of the handle portion of the monopolar circuit breaker 101. A pair of anti-rotation protrusions 34b1 and 34b2 that are engaged and constitute a second anti-rotation protrusion are a pair of anti-rotation depressions that form the first anti-rotation recess of the handle portion 21 of the monopolar circuit breaker 102, respectively. 21c1 and 21c2 are engaged. This prevents the connecting bar 30 from rotating about the connecting pin 40. Other configurations and operations are the same as those in the first embodiment.

  According to the multipolar circuit breaker according to the third embodiment of the present invention configured as described above, the connection bar 30 and the operation handle 20 do not require an additional member, and the operation handle 20 of the circuit breaker has a simple configuration. Can be restrained. Moreover, an inexpensive handle lock device can be obtained by making the interlocking pin 40 into a round shape with better workability than the elongated hole shape. Furthermore, by making the connecting bar 30 the same size as the outer shell of the operation handle, the outer shape when the circuit breaker is connected can be made compact. In addition, since the handle can be locked only by the connecting bar 30, an individual lock cover is unnecessary.

Embodiment 4 FIG.
Next, a multipolar circuit breaker according to Embodiment 4 of the present invention will be described. FIG. 8 is an exploded perspective view of the handle lock device in the multipolar circuit breaker according to Embodiment 4 of the present invention. In FIG. 8, the handle portion 21 of the operation handle 20 is provided with a first handle hole portion 21a1 and a second handle hole portion 21a2 having a circular cross section. As is apparent from FIG. 8, the first handle hole portion 21a1 and the second handle hole portion 21a2 have a pair of handle hole portions each having a circular cross section, and a narrow portion connecting these handle hole portions. It consists of and. Further, on both side end portions of the handle portion 21 of the operation handle 20, a pair of rotation stop recesses 21c1 and 21c2 constituting the first rotation stop recess and a second rotation stop recess are formed as in the third embodiment. A pair of rotation stopper recesses 21b1 (not shown) and 21b2 are formed.

  The connection bar 30 includes a connection hole 31 having a substantially circular cross section, and is penetrated by a connection pin 40 having a circular cross section. Other configurations are the same as those in the first to third embodiments. Further, a pair of anti-rotation protrusions 34a1 and 34a2 constituting the first anti-rotation protrusion and a pair of anti-rotation protrusions 34b1 constituting the second anti-rotation protrusion are provided at both end portions of the connecting bar 30. , 34b2 are formed.

  The pair of rotation stopper recesses 21c1 and 21c2 constituting the first rotation stopper recess is slidable with the pair of rotation stopper protrusions 34b1 and 34b2 constituting the second rotation stopper protrusion of the connecting bar 30, respectively. Engage. This prevents the connecting bar 30 from rotating about the connecting pin 40. And the dimension of the length direction of each rotation stop recessed part 21c1, 21c2, 21b1, 21b2 is formed in the dimension which enables the connection bar | burr 30 to slide at the time of the above-mentioned handle lock or release of a handle lock. Other configurations and operations are the same as those of the mobile phone 3 described above.

  According to the multipolar circuit breaker according to the fourth embodiment of the present invention configured as described above, the connecting bar 30 and the operation handle 20 do not require an additional member, and the operation handle 20 of the circuit breaker has a simple configuration. Can be restrained. Moreover, an inexpensive handle lock device can be obtained by making the interlocking pin 40 into a round shape with better workability than the elongated hole shape. Furthermore, by making the connecting bar 30 the same size as the outer shell of the operation handle, the outer shape when the circuit breaker is connected can be made compact. Further, since the operation handle can be locked only by the connecting bar 30, an individual lock cover is unnecessary.

100 Multi-pole circuit breaker 101, 102 Single-pole circuit breaker 1 Breaker case 20 Operation handle 20
1a Opening portion 21 Handle portion 30 Connecting bar 21a1, 21a2 Handle hole portion 21a11, 21a12, 21a21, 21a22 Handle hole portion 30 Connecting bar 31a1, 31a2 Connecting hole portion 31b, 21b1, 21b2 Narrow portion 32 Fixed holding convex portion 33 Notch portion 34a1 , 34a2, 34b1, 34b2 Anti-rotation protrusion 21c1, 21c2, 21b1, 21b2 Anti-rotation recess

Claims (11)

A multi-pole circuit breaker equipped with a handle lock device that locks a plurality of operation handles provided together,
The handle lock device is installed between the plurality of operation handles, constrains the operation handles integrally, and is configured to be movable with respect to the operation handle, and is fixed to the connection bar. First fixing and holding means, and second fixing and holding means provided in a case of the multipolar circuit breaker and capable of engaging with the first fixing and holding means,
When the first fixing and holding means and the second fixing and holding means are in a disengaged state, the first fixing and holding means and the second fixing and holding are moved by moving the connecting bar in a predetermined direction. Engaging said means to lock said plurality of operating handles;
When the first fixed holding means and the second fixed holding means are in an engaged state, the first fixed holding means and the second fixed bar are moved by moving the connecting bar in a direction opposite to the predetermined direction. In the multipolar circuit breaker configured to release the engagement of the plurality of operation handles by releasing the engagement with the fixed holding means ,
Both ends are provided with connecting pins that are respectively fixed to opposite sides of the plurality of operation handles,
The connection bar includes a connection hole penetrated by the connection pin,
The connection hole is formed to allow the connection bar to move in the predetermined direction and the direction opposite to the predetermined direction with respect to the connection pin.
A multi-pole circuit breaker characterized by that. The connecting pin is configured to have an oval cross-sectional shape,
The connection hole is composed of a pair of connection hole portions having an oval cross-sectional shape and a narrow portion connecting these connection hole portions to each other,
With the movement of the connecting bar, the connecting pin moves from one connecting hole to the other connecting hole through the narrow portion,
The multipolar circuit breaker according to claim 1 . A multi-pole circuit breaker equipped with a handle lock device that locks a plurality of operation handles provided together,
The handle lock device is installed between the plurality of operation handles, constrains the operation handles integrally, and is configured to be movable with respect to the operation handle, and is fixed to the connection bar. First fixing and holding means, and second fixing and holding means provided in a case of the multipolar circuit breaker and capable of engaging with the first fixing and holding means,
When the first fixing and holding means and the second fixing and holding means are in a disengaged state, the first fixing and holding means and the second fixing and holding are moved by moving the connecting bar in a predetermined direction. Engaging said means to lock said plurality of operating handles;
When the first fixed holding means and the second fixed holding means are in an engaged state, the first fixed holding means and the second fixed bar are moved by moving the connecting bar in a direction opposite to the predetermined direction. In the multipolar circuit breaker configured to release the engagement of the plurality of operation handles by releasing the engagement with the fixed holding means,
Comprising a connecting pin that penetrates and is fixed to the connecting bar;
The plurality of operation handles are provided with handle holes that respectively engage with both end portions of the connecting pin at least on the side surfaces facing each other.
The handle hole is formed to allow the connection bar to move in the predetermined direction and in a direction opposite to the predetermined direction with respect to the connection pin.
A multi-pole circuit breaker characterized by that. The connecting pin is configured to have an oval cross-sectional shape,
The handle hole is composed of a pair of connecting hole portions having an oval cross-sectional shape and a narrow portion that connects these connecting hole portions to each other,
With the movement of the connecting bar, the connecting pin moves from one connecting hole to the other connecting hole through the narrow portion,
The multipolar circuit breaker according to claim 3 . A multi-pole circuit breaker equipped with a handle lock device that locks a plurality of operation handles provided together,
The handle lock device is installed between the plurality of operation handles, constrains the operation handles integrally, and is configured to be movable with respect to the operation handle, and is fixed to the connection bar. First fixing and holding means, and second fixing and holding means provided in a case of the multipolar circuit breaker and capable of engaging with the first fixing and holding means,
When the first fixing and holding means and the second fixing and holding means are in a disengaged state, the first fixing and holding means and the second fixing and holding are moved by moving the connecting bar in a predetermined direction. Engaging said means to lock said plurality of operating handles;
When the first fixed holding means and the second fixed holding means are in an engaged state, the first fixed holding means and the second fixed bar are moved by moving the connecting bar in a direction opposite to the predetermined direction. In the multipolar circuit breaker configured to release the engagement of the plurality of operation handles by releasing the engagement with the fixed holding means,
A connecting pin having a circular cross section in which both end portions are respectively fixed to opposite side surfaces of the plurality of operation handles,
Anti-rotation portions respectively formed on side portions facing the operation handle of the connection bar;
Anti-rotation portions that are respectively formed on opposite side surfaces of the plurality of operation handles and engage with the anti-rotation portions,
The connection bar includes a connection hole penetrated by the connection pin,
The connection hole is formed to allow the connection bar to move in the predetermined direction and the direction opposite to the predetermined direction with respect to the connection pin.
A multi-pole circuit breaker characterized by that. The rotation stop portion formed on the connecting bar is constituted by a protrusion,
The rotation stop portion formed on the operation handle is configured by a notch portion that engages with the protrusion, and is configured to allow the protrusion to slide with the movement of the connecting bar. ,
The multipolar circuit breaker according to claim 5 . A multi-pole circuit breaker equipped with a handle lock device that locks a plurality of operation handles provided together,
The handle lock device is installed between the plurality of operation handles, constrains the operation handles integrally, and is configured to be movable with respect to the operation handle, and is fixed to the connection bar. First fixing and holding means, and second fixing and holding means provided in a case of the multipolar circuit breaker and capable of engaging with the first fixing and holding means,
When the first fixing and holding means and the second fixing and holding means are in a disengaged state, the first fixing and holding means and the second fixing and holding are moved by moving the connecting bar in a predetermined direction. Engaging said means to lock said plurality of operating handles;
When the first fixed holding means and the second fixed holding means are in an engaged state, the first fixed holding means and the second fixed bar are moved by moving the connecting bar in a direction opposite to the predetermined direction. In the multipolar circuit breaker configured to release the engagement of the plurality of operation handles by releasing the engagement with the fixed holding means,
A connecting pin having a circular cross section that passes through and is fixed to the connecting bar;
Handle holes formed on opposite side portions of the plurality of operation handles, respectively, and engaged with both end portions of the connection pin;
Anti-rotation portions respectively formed on side portions facing the operation handle of the connection bar;
Anti-rotation portions that are respectively formed on opposite side surfaces of the plurality of operation handles and engage with the anti-rotation portions,
With
The handle hole is formed to allow the connection bar to move in the predetermined direction and in a direction opposite to the predetermined direction with respect to the connection pin.
A multi-pole circuit breaker characterized by that. The rotation stop portion formed on the connecting bar is constituted by a protrusion,
The rotation stop portion formed on the operation handle is configured by a notch portion that engages with the protrusion, and is configured to allow the protrusion to slide with the movement of the connecting bar. ,
The multipolar circuit breaker according to claim 7 . The connection bar is configured such that at least a part of the outer surface thereof is continuous with a part of the outer surface of the plurality of operation handles at either one of the unlocking time and the locking time.
The multipolar circuit breaker according to claim 1, wherein the circuit breaker is a multi-pole circuit breaker. The handle lock device is configured to be able to determine whether or not the operation handle is in a locked state based on a relative position of the connecting bar with respect to the operation handle.
The multipole circuit breaker according to any one of claims 1 to 9, wherein The first fixing and holding means fixed to the connecting bar is constituted by a protrusion,
The second fixing and holding means provided in the case of the multipolar circuit breaker is configured by a recess that can engage with the protrusion.
The multipolar circuit breaker according to claim 1, wherein the circuit breaker is a multi-pole circuit breaker.

Images