JP4237584B2 - Circuit breaker drawing device - Google Patents

Description

The present invention relates to a circuit breaker comprising a circuit breaker body and a mounting base, and more particularly to a circuit breaker drawing device having a circuit breaker body in which switching contacts and the like are housed in a casing.

The circuit breaker is composed of a circuit breaker body having a switching contactor, a switching mechanism, a body side terminal, and a mounting base having an external line connection terminal. The circuit breaker body has a disconnection position and a connection position on the mounting base. Some are provided with a pull-out device having a guide device so that they can move between them. The disconnection position is a position where the main body side terminal and the external line connection terminal are disconnected with a predetermined insulation distance, and the connection position is a position where they are in contact with each other. FIG. 16 is a diagram showing a conventional circuit breaker disclosed in Japanese Patent Laid-Open No. 2001-245409, which is composed of a breaker body 100 and a drawer frame 101, and from the left to the right as the front in the figure. The circuit breaker body 100 is inserted into the drawer frame 101. In this figure, the main body side terminals and the external line connection terminals are not shown, but the main body side terminals are located on the back surface of the circuit breaker main body 100, and the external line connection terminals are inside the back surface of the drawer frame 101 and the main body side terminals. It is in the position facing. In this circuit breaker, the breaker body 100 is inserted between the left and right side plates 102, 102 of the drawer frame 101, and the breaker body 100 can move in the drawer frame 101 by moving the wheel 103 on the rail 104. .
JP 2001-245409 A

The above-described conventional circuit breaker drawer device is configured such that the breaker body 100 is positioned between the left and right side plates 102, 102 of the drawer frame 101. There was a problem that it was larger than the width dimension.
Accordingly, an object of the present invention is to provide a circuit breaker drawing device having a width dimension as small as possible, preferably a drawing device that is not larger than the width of the circuit breaker.

In order to solve the above problem, the invention of claim 1 is a main body comprising a power supply side terminal provided at one end of a casing housing an opening / closing contact and an opening / closing mechanism and a load side terminal provided at the other end. Move the circuit breaker body of the circuit breaker with the circuit breaker body with the side terminal and the mounting base with the outside line connection terminal between the disconnection position where the body side terminal and the outside line connection terminal are separated from the connection position. A circuit breaker drawing device for sliding the circuit breaker body in the direction of the mounting base, operation protrusions provided on the power supply side surface and load side surface of the housing, the power supply side surface of the housing, and A rotating disk provided on a mounting base having a spiral groove that guides the operating protrusion to a position facing the load side surface, and when the rotating disk is rotated, the rotating protrusion is connected to the operating protrusion via the edge of the groove. By the urging action acting and the guiding action of the guiding means Sectional body is decided to move to the disconnected position from the connection position or the connected position from the disconnected position.

According to a second aspect of the present invention, in the first aspect of the present invention, a first arc member that rotates coaxially with the rotating disk together with the rotating disk, a first slide member that includes a lock piece at the end, A spring member that urges the slide member in a direction in which the lock piece comes into contact with the outer circumference of the arc of the first arc member, and a lock piece formed on the outer circumference of the arc of the first arc member corresponding to the disconnection position and the connection position; It has locking grooves that can be engaged, and is provided with locking means for automatically stopping the rotation of the rotating disk rotated to the connection position or disconnecting position and holding the rotating disk at each position.

Further, the invention of claim 3 is the invention of claim 2, wherein the slide member is operable in a direction to disengage the lock piece from the lock groove and has a return spring, and is coaxial with the rotary disk. A second arcuate member that rotates with the rotating disc and is provided on the rotating surface of the rotating disc so as to form a stair in cooperation with the first arc member; An urging member that urges the lock piece, and a reset groove that can be engaged with the lock piece formed on the outer circumference of the arc of the second arc member on the extended line connecting the rotation center of the rotating disk and the lock groove. A reset groove corresponding to a disconnection position having a wall on the sloped connection position side on the rotation plane of the second arc member and a wall on the sloped disconnection position side on the rotation plane of the second arc member. A reset groove corresponding to the connection position having The lock piece engages with the reset groove of the second arc member when it is detached from the lock groove corresponding to the disconnection position or the connection position, and slides on the inclined wall when the turntable is rotated. The second arc member is rotated on the plane of rotation of the second arc member relatively along the outer circumference of the arc of the first arc member, and is engaged with the lock groove corresponding to the connection position or disconnection position, respectively.

According to a fourth aspect of the present invention, in the second or third aspect of the present invention, the lock piece is detached from the lock groove when the circuit breaker body is in an ON state. An interlock member that prevents the first slide member from moving in the direction in which the first slide member moves is provided.
Further, according to a fifth aspect of the present invention, in the fourth aspect of the present invention, the interlock member includes a first lever that reciprocally rotates in response to opening and closing of the circuit breaker body, and a third slide that engages and slides with the first lever. A member and a second lever that engages with the third slide member to block the movement of the first slide member according to the position of the third slide member are provided.

According to the first aspect of the present invention, the rotating disk for moving the breaker body is provided so as to face the power supply side and the load side of the breaker body, and is moved and urged by the spiral groove, so that the width dimension is small. There is an effect that it is possible to provide a drawing device for a circuit breaker, preferably a drawing device that does not become larger than the width of the circuit breaker.

According to a second aspect of the present invention, when the first slide member having the lock piece is biased in a direction in which the lock piece comes into contact with the outer circumference of the arc of the first arc member, the lock piece is The effect that the circuit breaker body can be automatically stopped at a predetermined position and held at that position with a simple configuration by automatically stopping the rotation of the rotating plate when engaged with the lock groove. Play.

Further, in the third aspect of the invention, when the lock piece is detached from the lock groove corresponding to the predetermined position of the circuit breaker body, the lock piece continues to engage with the reset groove until the rotating plate is operated. When the breaker body is held and rotated, the lock piece slides on the sloped wall and slides relatively on the second arc member rotation plane along the outer circumference of the arc of the first arc member. By doing so, there is an effect that a function of automatically engaging with a lock groove corresponding to another predetermined position and stopping the movement of the circuit breaker body can be realized with a simple configuration.

The inventions of claims 4 and 5 are configured to prevent the lock piece from being detached from the lock groove when the circuit breaker body is in an ON state, so that the circuit breaker body reaches the connection position. When leaving from the connection position, the arc is not generated between the main body side terminal and the external line connection terminal, and the safety can be ensured.

The best mode for carrying out the present invention will be described in the embodiment shown in FIGS.
FIG. 10 is a front view of the circuit breaker body 1 of the three-pole circuit breaker attached to the drawing device of the present embodiment, where the upper side is the power source side, the lower side is the load side, and the dimension W in the left-right direction is It becomes the width dimension.
FIG. 11 is a view of a plug-in type circuit breaker main body 50 in which a member as a plug-in type circuit breaker is mounted on the circuit breaker main body 1 as viewed obliquely from the back. It is attached. The circuit breaker body 1 has a configuration in which an unillustrated switching contact, an opening / closing mechanism for operating the switching contact, an overcurrent tripping device, etc. are housed in a case made of a substantially rectangular parallelepiped molded insulator. A main circuit terminal on the main body side including a stud-shaped power supply side terminal 3 and a load side terminal 4 provided at an end of the main circuit conductor of the circuit breaker main body 1 protrudes from the back surface of the insulating base 2. It should be noted that a cylindrical pin 6 fitted into a groove of a rotating disk 5 described later and guide means for a plug-in type breaker body 50 described later are provided at the power source side end and the load side end of the insulating base 2. The guide groove 7 which comprises one of these is provided. The insulating base 2 is equipped with a terminal block 9 having auxiliary circuit terminals 8 to which wiring of internal accessories such as auxiliary switches provided inside the circuit breaker body 1 is connected.
FIG. 12 is a perspective view of the mounting base 10 to which the plug-in type circuit breaker body 50 is attached as viewed from the front side. In the mounting base 10, external line connection terminals 12 and 13 corresponding to the power supply side terminal 3 and the load side terminal 4 are attached to a mounting base 11 made of molded insulator, respectively, and the terminal 8 of the terminal block 9 of the auxiliary circuit described above. A terminal block 15 of an auxiliary circuit having a terminal 14 that can contact with the terminal is provided.

FIG. 13 is a partially cutaway view of the state before the plug-in type circuit breaker body 50 in the ON state is attached to the mounting base 10, and FIG. 14 is a state after being attached. FIG. Referring to FIG. 13, the insulating base 2 is integrally molded so that the side wall 2 a and the power source side and load side guide walls 2 b protrude from the rear surface in the direction of the mounting base 10. The side wall 2a is provided with a member 51 slidable in the direction of the mounting base 10 along the side wall 2a, a lock lever 52 on the power source side and the load side in which a rotating shaft 52a is integrally formed, and a lock spring 53. Is provided. The lock spring 53 is attached such that one arm engages with the guide wall 2 b, the other arm engages with the groove 52 b of the lock lever 52, and the other arm end engages with the slide member 51. . By the action of the lock spring 53, the lock levers 52 on the power source side (upper side in FIG. 13) and the load side (lower side in FIG. 13) are urged clockwise and counterclockwise, respectively.

Further, when the plug-in type circuit breaker main body 50 is in the ON state as shown in FIG. 13, the detailed description is omitted, but the opening / closing contact interlocking lever 54 interlocking with the opening / closing contact is counterclockwise. The open / close contact piece interlocking piece 55 is slid to the right. In this state, the slide member 51 is also slid to the right, and the lock end 52 c of the lock lever 52 is at a position facing the left lock end 56 a of the lock wall 56 of the mounting base 10. For this reason, even if the plug-in type circuit breaker body 50 is moved to the right, the lock end 52c is blocked by the lock end 56a and cannot be attached to the mounting base 10.
When the plug-in type circuit breaker body 50 is turned OFF, the open / close contact piece interlocking lever 54 rotates clockwise, the open / close contact piece interlocking piece 55 moves to the left, and the slide member 51 also slides to the left. Due to this sliding operation, the lock lever 52 on the power source side and the load side rotates in the clockwise direction and the counterclockwise direction, respectively, and the opposed state between the lock end 52c and the lock end 56a is eliminated, and the plug-in type breaker body 50 as shown in FIG. Can be attached to the mounting base 10.
Referring to FIG. 15, when the plug-in type circuit breaker body 50 is turned on in the state shown in FIG. 14 where the plug-in type circuit breaker body 50 is attached to the mounting base 10, the lock levers 52 on the power supply side and the load side are respectively turned off. The lock end 52c faces the lock end 56b on the right side of the lock wall 56 in the clockwise direction and in the clockwise direction, and the lock end 52c does not move from the mount 10 in this state even if the plug-in type circuit breaker body 50 is removed. It cannot be removed by engaging with the lock end 56b. If the plug-in type circuit breaker body 50 is turned OFF, the opposing relationship between the lock end 52c and the lock end 56b can be eliminated and removed as shown in FIG.
In addition, tulip-shaped contacts 16 are attached to the external line connection terminals 12 and 13 of the mounting base 10, and the power supply side terminal 3 and the load side terminal 4 are reliably in contact with the external line connection terminals 12 and 13 by the spring 17. It is supposed to be.
Thus, since this circuit breaker is in the ON state, the plug-in type circuit breaker main body 50 cannot be attached to or detached from the mounting base 10, and therefore, between the main body side terminal and the external line connection terminal at the time of attachment or removal. It has a safety function to prevent arcing.

Next, FIG.1 and FIG.2 is the perspective view which looked at the drawing-out apparatus by a present Example from the front side, Comprising: The plug-in type circuit breaker main body 50 has shown the state which exists in a connection position and a disconnection position, respectively. . FIG. 3 shows a state in which the plug-in type breaker body 50 is not attached to the drawer device. In FIG. 1 and FIG. 2, only the outer shape of the circuit breaker body 1 is shown by a chain line in order to facilitate understanding of the structure and members of the drawing device. This drawing device comprises a pair of drawing units 18 and 19 on the power supply side and the load side. Since the drawer units 18 and 19 are vertically symmetrical in FIG. 1 and have essentially the same configuration, the reference numerals of the constituent members in the drawing are attached to one or both of the drawer units 18 and 19, unless otherwise specified. The load-side drawer unit 19 will be described.
FIG. 4 is a view of the drawer unit 19 of FIG. 1 as viewed from below. The drawer unit 19 does not protrude from the width W of the circuit breaker including the mounting base 10.
FIG. 5 is a cross-sectional view of the main part when FIG. 4 is viewed from the side, FIG. 6 is a diagram showing the back surface when the surface on which the groove is formed is the front surface, and FIG. FIG.

1, 2, 3, 4, 5, 6, and 7, the drawer unit 19 is a support member attached to the protrusion 20 of the mounting base 10 shown in FIG. 12. Is built on 21. Mounted on the support member 21 are a rotating disk 5 rotatably provided by a rotating shaft 22 and having an operation handle 23, a lock lever 61, a check slider 62, and an operation slider 63.
In addition, the drawer unit 19 is formed with a pair of guide pillars 26 standing vertically with respect to the mounting base 10, and the guide groove 7 of the insulating base 2 described above is fitted into the guide unit of the plug-in type breaker body 50. ing.

The turntable 5 is provided such that the center of rotation is located on the center line with respect to the width direction of the plug-in type circuit breaker body 50, and a linear groove 24 and a spiral groove 25 connected to each other are formed on the surface. The surfaces of the power-supply-side and load-side rotating discs 5 are opposed to the power-side surface and the load-side surface of the substantially rectangular parallelepiped housing of the circuit breaker body 1.
On the base surface 64 on the back surface of the rotating disk 5, referring to FIG. 6, a disk 65 having an arc concentric with the rotation center of the rotating disk 5 and a disk 66 having an arc having a smaller radius than the disk 65 are provided. It is formed integrally with the rotating disk 5. Three notches A, B, and C are formed on the outer peripheral edge of the disk 65, and the slope AB from the base surface 64 to the face of the disk 65 from one end of the notch A toward the notch B is the same. At both ends of the notch B, slopes BA and BC are formed toward the notch A and the notch C, respectively, and a slope CB is formed from one end of the notch C toward the notch B. Further, on the outer peripheral edge of the disk 66, notches D, E and F are formed on lines extending from the notch A, the notch B and the notch C to the center of rotation, respectively.

FIG. 7 is a side view of the check slider 62. The check slider 62 is made of a thermoplastic molded insulator, and can slide up and down by fitting a groove formed by the wall portion 62a and the protrusion 62b into the wall of the support member 21 with reference to FIG. The check slider 62 has a lock finger 62c that forms a U-shape together with the wall portion 62a. A pressing spring 67 is attached between the vicinity of the tip of the lock finger 62c and the wall 62a, and the check end 62e provided at the tip of the lock finger 62c is urged away from the wall 62a. .
4 and 5, the lock lever 61 is provided below the drawer unit 19 and is urged clockwise by a torsion spring 68. One arm 61a of the lock lever 61 is engaged with the lower end 62d of the check slider 62 and urges the check slider 62 upward.
The operation slider 63 is provided on the support member 21 so as to be slidable in the vertical direction. The operation slider 63 is urged upward by a spring 69 and is pushed downward to displace the check slider 62 downward to make it free. As a result, it returns upward to the position shown in FIG.

Next, an operation when the plug-in type circuit breaker body 50 is attached to the drawing device will be described. 8 and 9 are explanatory views for explaining the operation when the drawer unit 19 is viewed from the upper side in FIG.
First, the plug-in type circuit breaker body 50 is set at the mounting / removal position as follows. That is, with reference to FIG. 3 and FIG. 8, the turntable 5 is rotated to the mounting / removing position so that the open end 24 a of the linear groove 24 faces the front side. In this state, referring to FIG. 6, the check end 62 e of the check slider 62 urged upward enters the notch D of the disk 66 on the back side of the rotating disk 5. In this state, the plug-in type breaker body 50 is moved so that the pin 6 moves from the opening end 24a until it is located at the intersection of the linear groove 24 and the spiral groove 25. In this mounting / removal position, the main circuit on the main body side and the external circuit connection terminal of the main circuit on the mounting base side and the terminal of the auxiliary circuit on the main body side mounting side are not in contact with each other, and the plug-in The mold breaker body 50 can be taken out again without any operation.

In order to move the plug-in type circuit breaker body 50 from the attachment / detachment position to the disconnection position, first, the operation slider 63 is pushed downward. By this operation, the check slider 62 is displaced downward, the check end 62e at the tip of the lock finger 62c is displaced from the notch D to the notch A, and the turntable 5 becomes rotatable. When the turntable 5 is rotated in this direction toward the connection position (clockwise in FIG. 8), a displacement acting force is applied to the pin 6 from the edge of the spiral groove 25 formed away from the rotation shaft 22. The plug-in type breaker body 50 is moved in the direction of the mounting base 10 together with the pin 6 by the guide means by the guide groove 7 and the guide post 26. Referring to FIG. 6, at the initial stage of rotation of rotating disk 5, check end 62 e slides on slope AB and moves on the plane of disk 65. Thereafter, the check end 62e of the check slider 62 biased upward by the spring 68 is in contact with the outer peripheral edge ABA of the disk 66 and slides on the plane of the disk 65 relatively along the outer peripheral edge. Get stuck in part E. Due to this engagement, further rotation of the turntable 5 is prevented, and the plug-in type circuit breaker body 50 reaches the disconnection position shown in FIG. This disconnection position is a position where the main circuit terminal of the plug-in type circuit breaker body 50 and the external circuit connection terminal of the main circuit on the mounting base 10 side and the terminal of the auxiliary circuit on the main body side and the mounting base side are not yet in contact with each other. Since the pin 60 is in the middle of the spiral groove 25, the plug-in type circuit breaker body 50 cannot be taken out.

When further moving to the connection position, the operation slider 63 is again pushed downward. By this operation, the check end 62e of the lock finger 62c is moved from the notch portion E to the notch portion B, and the turntable 5 becomes rotatable. When the rotating disk 5 is rotated, the check end 62e slides on the slope BC and moves on the plane of the disk 65, and then relatively on the plane of the disk 65 along the outer peripheral edge BCB of the disk 66. Is inserted into the notch F. This jamming prevents further rotation of the turntable 5, and the plug-in type circuit breaker body 50 reaches the connection position shown in FIGS. In this connection position, the main circuit terminal and the auxiliary circuit terminal on the main body side are in contact with the main circuit terminal and the auxiliary circuit terminal on the mounting base side, respectively. In this connection position, the plug-in type breaker body 50 cannot be taken out because the pin 60 is in the vicinity of the closed end 25a of the spiral groove 25.
When the plug-in type breaker body 50 is taken out from this connection position, the check end 62e is moved by pushing the operation slider 63 downward to move the check end 62e from F to C and rotating the turntable 5 in the opposite direction. It slides on the slope CB and subsequently slides on the flat surface of the disk 65 along the outer peripheral edge BCB of the disk 66 to become a disconnecting position where it fits into the notch E. Further, when the operation slider 63 is pushed again downward to move the check end 62e from E to B and the rotating disk 5 is rotated, the check end 62e slides on the slope BA and further along the outer peripheral edge ABA of the disk 66. It slides on the plane of 65 and enters the notch D. The plug-in type circuit breaker body 50 can be taken out at this position.
The main circuit side auxiliary circuit terminal and the mounting base side auxiliary circuit terminal are in contact with each other before the main circuit side and the mounting base side main circuit terminal are in contact with each other. By providing a notch or slope similar to the disconnection position between the position and the position, it is possible to provide a test position where only the auxiliary circuit terminal on the main unit and the auxiliary circuit terminal on the mounting base are in contact with each other. You can check the operation status of the internal accessories without doing so.

This drawer type circuit breaker includes two configurations that can satisfy the essential function of any one of the interlock functions for preventing the plug-in type breaker body 50 in the ON state from moving. That is, one configuration is realized by the lock lever 52 and the lock wall 56, and when the latter configuration described below is not provided, the rotary disk 5 is urged to rotate and is a plug-in type circuit breaker. As described above, even when the main body 50 is urged to move, the movement is prevented.
The other configuration is configured so that the operation slider 63 cannot be pushed downward when in the ON state. In the case of this latter configuration, it can be recognized that the operation slider 63 that can be slid by a small force in the OFF state cannot be moved in the ON state and is in the ON state. In the latter configuration, a partition-like slider guide 71 is integrally formed on the mounting base 11, and a lock slider 70 that slides along the slider guide 71 is provided so as to hold the slider guide 71. Yes. The lock slider 70 includes a catch 70a that engages with the other arm 61b of the lock lever 61 on one side of the slider guide 71, and includes catches 70b and 70c that form U-shaped legs on the other side. On the other hand, the plug-in type breaker body 50 is provided with a lock lever 72 that rotates integrally with the lock lever 52 and has a lock end 72a.

With reference to FIG. 2, the plug-in type circuit breaker main body 50 in the disconnecting position is in an OFF state. In this state, the lower lock lever 72 is rotated counterclockwise, and the lock end 72 a is not located at a position facing the catch 70 c of the lock slide 70. (Hereinafter, the lower lock lever 72 will be described as an example.) Therefore, the plug-in type circuit breaker body 50 can be moved in the direction of the connection position by operating the operation handle 23. However, in the ON state, the lock lever 72 rotates clockwise with the lock lever 50 as described above, and the lock end 72a faces the outside of the catch 70c of the lock slider 70. In this state, when the operation slider 63 is pushed downward in FIG. 4 in order to move the plug-in type circuit breaker body 50 to the connection position, the operation force urges the check slider 62 downward, and the lock lever 61 is moved. The lock slider 70 is biased counterclockwise, and the lock slider 70 is biased upward via the lock end 61b and the catch 70a. However, when the catch 70 c of the lock slider 70 is engaged with the lock end 72 a of the lock lever 72, the lock lever 61 is prevented from rotating, and the check slider 62 and the operation slider 63 are prevented from moving downward. Thus, if the check slider 62 does not move downward, the check end 62e does not detach from the notch E, and therefore, the rotary disk 5 cannot be rotated to move the plug-in circuit breaker body 50 to the connection position.
With reference to FIG. 1, the plug-in type circuit breaker body 50 in the connection position is in an OFF state. As described above, in this state, the lock lever 72 is rotated counterclockwise, and the lock end 72a is not located at a position facing the catch 70b of the lock slide 70. Therefore, it can be moved in the direction of the connection position. However, in the ON state, the lock lever 72 rotates in the clockwise direction, and the lock end 72 a is at a position facing the inside of the catch 70 b of the lock slider 70. Even if the operation slider 63 is pushed in this state, the catch 70b engages with the lock end 72a, so that the lock lever 61 is prevented from rotating and the check slider 62 and the operation slider 63 are prevented from moving downward. Thus, if the check slider 62 does not move downward, the check end 62e does not detach from the notch F, and therefore, the rotary disk 5 cannot be rotated to move the plug-in circuit breaker body 50 to the disconnect position.

It is a perspective view which shows the state which has a circuit breaker main body in a connection position of the Example of the drawing-out apparatus by this invention. FIG. 2 is a view corresponding to FIG. 1 when the breaker body is in the disconnecting position. FIG. 2 is a view corresponding to FIG. 1 in a state in which the circuit breaker main body is in a mounting / removal position before mounting. It is the figure which fractured | ruptured a part which looked at FIG. 3 from the downward direction. FIG. 5 is a partial view in which a part of FIG. 4 viewed from the side is broken. It is a figure which shows the component of a present Example. It is a figure which shows another component. It is a figure explaining operation | movement of the drawing apparatus of FIG. It is a figure explaining operation | movement of the drawing apparatus of FIG. It is a front view of the 3 pole type circuit breaker main body of the circuit breaker which mounts the drawer | drawing-out apparatus of a present Example. It is the perspective view which looked at what attached the member as a plug-in type circuit breaker to the circuit breaker main body of FIG. 10 from the back side. It is the mount stand which attaches the circuit breaker main body of FIG. 10, and is the perspective view seen from the front side. It is the figure which fractured | ruptured the part which looked at the state before attaching the circuit breaker body in an ON state to a mounting stand from the side. It is the figure which fractured | ruptured the part which looked at the state after turning off the circuit breaker main body and attaching to a mounting stand from the side. It is the figure which fractured | ruptured the part which looked at the state when it turned ON, after attaching a circuit breaker main body to a mounting base. It is a figure of the conventional drawer | drawing-out apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Circuit breaker body 2 Insulation base 5 Turntable 6 Pin 7 Guide groove 10 Mounting base 11 Mounting base 16 Tulip type contactor 17 Spring 18, 19 Drawer unit 20 Protrusion part 21 Support member 22 Rotating shaft 23 Operation handle 24 Linear shape Groove 25 Helical groove 26 Guide post 50 Plug-in type breaker body 51 Slide member 52 Lock lever 52a Rotating shaft 52b Groove 52c Lock end 53 Lock spring 54 Opening / closing contact interlocking lever 55 Opening / closing contact interlocking piece 56 Lock wall 56a Upper part Lock end 56b Lock end 61 Lock lever 61a One arm 61b The other arm 62 Check slider 62d Lower end 62e Check end 63 Operation slider 64 Base surface 65, 66 Disk A, B, C, D, E, F Notch AB BA, BC, CB Slope ABA, BCB Outer peripheral edge 67 Presser spring 68 Screw Spring 69 Spring 70 Lock slider 70a, 70b, 70c Catch 71 Slider guide 72 Lock lever 72a Lock end

Claims (5)

Breaker body (1) having a body side terminal (3, 4) composed of a power supply side terminal provided at one end of a casing housing the opening / closing contactor and the opening / closing mechanism and a load side terminal provided at the other end And the circuit breaker body (1) of the circuit breaker having the mounting base (10) having the external line connection terminals (12, 13), the body side terminals (3, 4) and the external line connection terminals (12, 13). A circuit breaker drawing device (18, 19) for moving between the disconnected disconnection position and the contacted contact position,
Guiding means (7, 26) for sliding the circuit breaker body (1) in the direction of the mounting base;
Operation protrusions (6) provided on the power supply side surface and the load side surface of the housing;
A turntable (5) provided on the mounting base (10) in which a spiral groove (25) for guiding the operation protrusion (6) is formed at a position facing the power supply side surface and the load side surface of the housing. )When,
With
The circuit breaker body by the biasing action that acts on the operating projection (6) through the edge of the groove (25) and the guiding action of the guiding means (7, 26) when the rotating disk (5) is rotated. (1) The circuit breaker drawing device, wherein (1) moves from the disconnection position to the connection position or from the connection position to the disconnection position. A first arc member (66) rotating coaxially with the turntable (5) together with the turntable (5);
A first slide member (62) having a lock piece (62e) at the end;
A spring member (68) for urging the first slide member (62) in a direction in which the lock piece (62e) contacts the outer circumference of the arc of the first arc member (62);
Lock grooves (E, F) engageable with the lock pieces (62e) formed on the outer periphery of the arc of the first arc member (66) corresponding to the disconnection position and the connection position;
The lock plate for automatically stopping the rotation of the rotating disk (5) rotated to the connection position or disconnecting position and holding the rotating disk (5) at each position is provided. Circuit breaker drawing device. A second slide member (63) capable of operating the slide member (62) in a direction to release the lock piece (62e) from the lock groove (E, F) and having a return spring (69);
The rotating disk (5) rotates on the same axis as the rotating disk (5) together with the rotating disk (5) so as to form a stair in cooperation with the first arc member (66). A second arc member (65) provided on the surface;
An urging member (67) for urging the lock piece (62e) in a direction in contact with the rotating surface (64) of the rotating disk (5);
Engagement with the lock piece (62e) formed on the outer circumference of the arc of the second arc member (65) on the extension line of the line connecting the rotation center of the rotating disk (5) and the lock groove (E, F). Reset grooves (B, C) that can be combined, the reset grooves (B, C) corresponding to a disconnection position having a sloped connection position side wall (BC) on the rotation plane of the second arc member (65) ( B) and the reset groove (C) corresponding to the connection position having a wall (CB) on the sloped disconnection position side on the rotation plane of the second arc member (65),
The lock piece (62e) engages with the reset groove (B, C) of the second arc member (65) when detached from the lock groove (E, F) corresponding to the disconnection position or the connection position, When the turntable (5) is rotated, the sloped wall (BC, CB) is slid and the second arc member (65) is rotated on the plane of rotation of the arc of the first arc member (66). 3. The circuit breaker drawing device according to claim 2, wherein the circuit breaker pulls out relative to the outer periphery (BCB) and engages with the lock grooves (F, E) corresponding to the connection position or disconnection position, respectively. . A member that operates in accordance with the open / close state of the breaker body (1), and the lock piece (62e) is detached from the lock grooves (E, F) when the breaker body (1) is in an ON state. The circuit breaker drawing device according to claim 2 or 3, further comprising an interlock member that prevents the first slide member (62) from moving in a moving direction. The interlock member includes a first lever (72) that reciprocates in response to opening and closing of the circuit breaker body (1), and a third slide member (70) that engages and slides with the first lever (72). And a second lever (61) that engages with the third slide member (70) to block the movement of the first slide member (62) according to the position of the third slide member (70). The circuit breaker drawing device according to claim 4.

Images