JPH079528Y2 - Device for connecting / disconnecting drawer type equipment - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] This invention stores a movable side disconnector contact of a drawer type device such as a circuit breaker housed in a housing frame using a lever type handle. The present invention relates to a device for connecting / disconnecting a pull-out type device which comes into contact with and separates from a fixed-side disconnector contactor in a frame.

[Conventional technology]

A conventional connection / disconnection operation device of this type is configured as shown in FIG.

That is, in the figure, (1) is a storage frame body such as a switchboard, (2) is a bottom plate of the storage frame body (1), and (3) is a circuit breaker housed in the storage frame body (1) in a retractable manner. It is a pull-out type device, such as a wheel, which has a bottom plate (2) traveling on a bottom plate (2), and three-phase movable side primary disconnector contactors (hereinafter simply referred to as movable side contact) on the upper and lower rear surfaces. Child (5),
(5 ') is supported.

(6) and (6 ') are support angles (7) and (7') and insulating support insulators (8) and (8 ') in the storage frame (1).
Is a three-phase fixed-side primary disconnector contactor (hereinafter simply referred to as fixed-side contactor) supported via a drawer-type device (3)
By moving in and out, that is, by moving back and forth, both movable side contactors (5), (5 ') are respectively fixed side contactors (6),
Contact (6 ').

(9) is a U-shaped handle fixed to the lower part of the front surface of the drawer type device (3), and (10) is fixed to the upper surface a little forward of the disconnection position of the drawer type device (3) on the bottom plate (2). This is a support metal fitting having an open bearing hole, and the support metal fittings (10) are provided on both sides of the storage frame body (1) so that the drawer type device (3) can be put in and out without trouble.

(11) is a lever type handle having a shaft (12) which is long in the left-right direction at its lower end and a fulcrum pin (13) slightly above it, and a grip (9) is attached to this fulcrum pin (13). )
A lever (14) having an engaging hole for is supported.

Then, as shown in FIG. 4, after supporting both ends of the shaft (12) of the handle (11) in the bearing holes of the support fitting (10) for the pull-out type device (3) at the disconnection position, Engage the engaging hole of the lever (14) with the handle (9), and
When 1) is pushed in the direction of arrow a, the handle (11) rotates about the shaft (12) as a fulcrum, and the drawer type device (3) is moved through the fulcrum pin (13), the lever (14) and the handle (9). ), A pull-out type device (3) moves rearward, and the movable contacts (5) and (5 ') move to the fixed contacts (6) and (6', respectively). ) Is connected to.

When the handle (11) is pulled forward from this connected state, the pull-out device (3) is moved to the arrow b, contrary to the above.
A force acts in a direction opposite to that of the pull-out type device (3), and the movable side contactors (5) and (5 ') move to the fixed side contacts (6) and (6'), respectively. And disconnect.

[Problems to be solved by the invention]

By the way, in the above-mentioned conventional operating device, a force in the direction of the arrow b acts on the drawer type device (3) from the position of the handle (9) by the operation of the handle (11) at the time of connection operation. The device (3) has fixed side contacts (6),
From (6 '), on the line in the front-rear direction passing through the intermediate position between the upper and lower fixed side contacts (6) and (6') in the central phase,
A reaction force acts in the direction of arrow c, that is, in the forward direction.

In this case, the action points of the handle (11) in the direction of arrow b and the reaction force of the fixed-side contacts (6) and (6 ') in the direction of arrow c have vertical shifts. , Moment acts on the drawer type device (3), and the drawer type device (3)
Is tilted or tilted as indicated by the alternate long and short dash line in the figure, and normal connection operation cannot be performed.

Therefore, a guide (15) with which the axle of the rear wheel (4) of the drawer type device (3) engages is provided on the bottom plate (2) from the disconnection position to the connection position, and Preventing tilting is done.

However, in the above-mentioned device, the connecting operation force by the handle (11) is consumed by the component force for tilting the drawer type device (3) and the frictional force between the guide (15) and the axle for preventing this tilt, A very large operating force is required to complete the connecting operation, which has a drawback that the operability is extremely deteriorated.

In view of this, it is a technical object of this invention to provide a means capable of exerting an effective operating force on the drawer type device against the reaction force from the fixed side contact.

[Means for solving problems]

In this invention, a plurality of movable side disconnection section contacts at the rear of the drawer type apparatus housed movably in a storage frame body are operated by a handle to operate a plurality of fixed side disconnection section contacts. In the device for connecting / disconnecting the drawer type device that is connected and disconnected respectively, the front part of the drawer type device on the line in the moving direction of the drawer type device passing through the central part of the plurality of fixed side disconnection part contacts. Is provided at a position, and a horizontal handle serving as an engaging portion of the handle is provided, and at a position slightly higher than the handles on both sides of the front surface portion of the storage frame body, an L-shaped support metal fitting having a bearing hole is transparently provided. Secure the L of the handle
A base formed in a shape is provided so as to pass through a horizontal shaft, both ends of the shaft are detachably inserted into the bearing holes, and a lever is connected to a fulcrum pin at an end of the base. The engaging hole at the tip is removably fitted into the handle.

[Action]

Therefore, according to the device for connecting / disconnecting the drawer type device of the present invention, when the drawer type device is moved by the handle operation, the drawer type device has a plurality of fixed side disconnector contacts, Although the reaction force is received with the central portion as the point of action, the handle engaging portion provided on the drawer-type device is located on the line in the moving direction of the drawer-type device that passes through the central portion, so the operating force by the handle and the fixed side The action points of the disconnecting portion contact and the reaction force do not deviate from each other, and the component force or the like for tilting the drawer type device does not occur, and the operating force enables efficient connection and disconnection operation.

〔Example〕

Next, the present invention will be described in detail with reference to FIGS. 1 to 3 showing the first embodiment. The same symbols as those used above indicate the same or corresponding ones.

In these drawings, (16) is a horizontal U-shaped handle which is a handle engaging portion provided on the front surface of the drawer type device (3), and the handle (16) has upper and lower three-phase handles. It is located in the central part of the fixed side contacts (6), (6 '), that is, on the line in the front-back direction passing through the center between the upper and lower fixed side contacts (6), (6') in the central phase. .

Reference numeral (17) is an L-shaped support fitting fixed to the L-shaped angles on both sides of the front surface of the storage frame (1) by bolts and nuts at positions slightly higher than the handle (16),
As shown in FIG. 3, the bearing hole (18) is provided so as to be a fulcrum of the handle.

Reference numeral (19) is a handle having an L-shaped base, and both ends of a horizontal shaft (20) penetrating the base are respectively supported by bearing holes (18) of the support fitting (19). Then, the handle (19) rotates up and down with the shaft (20) as a fulcrum.
Reference numeral (21) is a lever connected to a fulcrum pin (22) at the base end of the handle (19), and a handle (16) is detachably fitted into an engaging hole at the tip of the lever (21). There is.

Therefore, when the handle (19) is rotated in the direction of arrow A from the disconnection state shown in FIGS. 1 and 2, the lever (21) and the handle (16) are moved from the fulcrum pin (22) of the handle (19). The operation force in the direction of arrow B acts on the drawer type device (3) via the, and the drawer type device (3) moves rearward. At this time, the fixed side contact (6),
Although the reaction force in the direction of arrow C acts from (6 '), the connection operation force by the handle (19) and the fixed side contact (6),
Since each point of action with the reaction force of (6 ') is located on the same line in the moving direction of the drawer type device (3), component force such as moment acting on the drawer type device (3) does not act. , The movable contacts (5), (5 ') are connected to the fixed contacts (6), (6'), respectively.

Further, when the handle (19) is rotated upward from the connection state shown by the chain double-dashed line in FIG. 1, that is, in the direction opposite to the arrow A, the operating force by the handle (19) and the fixed side contactor (6). , (6 ') have reaction forces of arrows B and C, respectively.
, The drawer type device (3) moves forward, the movable side contacts (5) and (5 ') are separated from the fixed side contacts (6) and (6'), Disconnect.

[Effect of device]

As described above, according to the device for connecting / disconnecting the drawer type device of the present invention, the operation force by the handle operation can be efficiently applied to the connection / disconnection of the drawer type device, which requires a large operation force. Instead, the operability can be improved.

[Brief description of drawings]

1 to 3 show an embodiment of a device for connecting / disconnecting a drawer type device according to the present invention. FIG. 1 is a cut side view, FIG. 2 is a plan view of FIG. 1, and FIG. FIG. 4 is a partly cut side view, and FIG. 4 is a partly cut side view of a conventional example. (1) ... Storage frame, (3) ... Draw-out device, (5),
(5 ') ... Moveable side primary disconnector contactor, (6), (6')
… Fixed side disconnector contact, (16)… handle, (17)… supporting metal, (19)… handle.

Claims (1)

[Scope of utility model registration request] 1. A handle (19) is provided with a plurality of movable disconnector contacts (5), (5 ') at the rear of a drawer type device (3) movably accommodated in a storage frame (1). ), The connection / disconnection operation device of the drawer type device is connected and disconnected to the plurality of fixed side disconnection section contacts (6) and (6 ′) in the storage frame (1), respectively. The draw-out device (3) on the line in the moving direction of the draw-out device (3) passing through the central portions of the fixed side disconnector contacts (6), (6 ').
A horizontal grip (16) serving as an engaging portion of the handle (19) is provided at a position of the front part of the, and a position slightly higher than the grips (16) on both sides of the front surface of the storage frame (1). In the L-shaped support metal fitting (17) with the bearing hole (18)
And a horizontal shaft (20) is provided through the L-shaped base of the handle (19) so that both ends of the shaft (20) can be freely attached to and detached from the bearing hole (18). Insert the drawer, connect the lever (21) to the fulcrum pin (22) at the end of the base, and engage the engagement hole at the tip of the lever (21) with the handle (16) in a detachable manner. Device connection / disconnection operation device.