JP5210836B2 - Switch manual operation device - Google Patents

Description

  The present invention relates to a manual operation device for a switch, and in particular, a manual operation of a switch suitable for manually operating an open / close operation of a load switch and a ground switch accommodated in the case from the outside of the case. Relates to the device.

  7 (a), 7 (b), and 7 (c) show a conventional manual operation device for a switch. 7A is a diagram showing a state in which the load switch is open and the ground switch is open, FIG. 7B is a diagram showing a state in which the load switch is closed, and the ground switch is open, FIG. ) Is a diagram showing a state in which the load switch is open and the ground switch is closed.

  In the figure, 17 is a load switch manual operation shaft, 17a is a pin, 18 is a ground switch manual operation shaft, and 19 is an interlock lever. An interlock lever 19 having a cam with one end fixed by a pin 17a and a long groove at the other end and a hole having a diameter larger than the diameter of the long groove is attached to one of the manual operation shafts. It is. The manual operation shaft 18 of the earthing switch rotates only when it is at the position of the hole of the interlock lever 19, and when it is at the position of the long groove, the long diameter portion comes into contact with the long groove and the rotation is prevented. When one of the switch and the ground switch is closed, the closing operation of the other switch is blocked.

  On the other hand, when the load switch manual operation shaft 17 is rotated clockwise, the load switch is closed, and when operated counterclockwise, the load switch is opened. Similarly, when the earthing switch manual operation shaft 18 is rotated clockwise, the earthing switch is closed, and when operated counterclockwise, the earthing switch is opened.

  As described above, the conventional manual operation device for a switch operates the respective manual operation shafts of the load switch and the ground switch to open / close each switch (for example, see Patent Document 1). ).

Utility Model Registration No. 2593306

  In the above-described conventional manual operation device for a switch, it is necessary to provide a locking device for preventing an erroneous operation between both operation shafts so that the other switch cannot be accidentally closed when the one switch is closed. Therefore, there is a problem that the configuration of both operation shafts becomes complicated.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a switch that can simplify the structure of a locking mechanism in manual operation of a load switch and a ground switch. It is to provide a manual operation device.

In order to achieve the above-mentioned object, the manual operation device for a switch according to the present invention manually operates a load switch and a ground switch accommodated in a housing, and operates an operating device provided outside the housing. In the manual operating device of a switch that opens and closes by driving a manual rod connected to the operating device and a drive lever connected to the manual rod in the axial direction of the manual rod, the load switch and the ground switching Each drive lever of the switch is coupled to a drive shaft of a drive mechanism that drives the load switch and the ground switch, and a load is connected to the symmetrical side of the drive shaft to which the drive lever of the load switch is coupled. parts are combined, the load connection member is connected to one end of the L-shaped connecting member, and the other end of the L-shaped connecting member, the driving of the drive mechanism for driving the ground switch Ground connection connected to shaft Material is connected to the end portion of the drive shaft for driving the grounding switch to be connected to the ground connection member, the rotating member of the rotation drive path is relative to the non-rotating member to rotate in the rotational drive direction And a one-way mechanism for preventing rotation in the opposite direction by wedge engagement, and the one-way mechanism is switched to a state in which the reverse rotation of the rotating member is allowed. .

  According to the present invention, it is possible to obtain a manual operation device for a switch with a simple structure of a locking mechanism that can reduce holding power, which is power for holding an output shaft that applies a load from the outside in a fixed position. effective.

  Hereinafter, an embodiment of a manual operating device for a switch according to the present invention will be described with reference to the drawings.

  FIG. 1 shows a vacuum switchgear that employs a manual operation device for a switch according to the present invention.

  In the figure, reference numeral 8 denotes a casing, in which a load switch 5 and a ground switch 6 are housed. The load switch 5 is connected to a load switch drive shaft 1 via a load switch drive lever 3 and a load switch rod 9 having one end connected to a manually operated operating device (not shown) and grounded. The switch 6 is connected to the ground switch driving shaft 2 via the ground switch drive lever 4 through a ground switch driving lever 4 whose one end is connected to a manually operated controller (not shown). Reference numerals 7, 11a and 16 denote a fixing part, a load connecting member, and a one-way clutch interlock unit which will be described later.

  Then, by manually operating an operating device provided outside the housing 8, a manual rod (not shown) connected to the operating device and a load switch driving lever 3 connected to the manual rod are connected to the manual rod. By driving in the axial direction, the load switch 5 or the ground switch 6 is manually opened and closed.

  FIG. 3 shows a front view of a manual operation device for a switch according to the present embodiment. As shown in the figure, a load coupling member 11a is coupled to the symmetrical side of the load switch driving shaft 1 to which the load switch driving lever 3 is coupled, and the load coupling member 11a is connected to the L-shaped coupling member 11b. The other end of the L-shaped connecting member 11 b is connected to a ground connecting member 11 c connected to the ground switch driving shaft 2. Thereby, the vertical movement (the axial direction of the rod) by the opening / closing drive can be converted into the horizontal movement by the L-shaped connecting member 11b.

  Next, the operation of the manual operation device for a switch according to the present embodiment will be described with reference to FIGS.

  FIG. 4 shows an assembled state of the end portion of the ground switch driving shaft 2. As shown in the figure, a one-way clutch interlock portion 16 is coupled to a drive shaft clutch portion 2 'of the drive shaft formed at the end of the earthing switch drive shaft 2, and after the fixed component 7 is coupled, The load switch driving shaft 1 and the ground switch driving shaft 2 are fixed by connecting the component 7 to the housing 8 shown in FIG. 1 with bolts.

  As shown in FIG. 2, which is a cross-section taken along the line AA ′ of FIG. 1, the one-way mechanism portion is provided on the inner periphery of the drive shaft clutch portion 2 ′ including the drive shaft connected to the ground connection member 11c and the inclined surface forming member 12. An inclined surface formed and inclined toward one side in the circumferential direction, a roller 13 which is a rolling element incorporated between them, and the roller 13 between the drive shaft clutch portion 2 'and the inclined surface. The biasing spring 14 is biased in the clockwise direction, which is the direction in which the gap decreases.

  In the present embodiment, the inclined surface, the roller 13 and the urging spring 14 are each arranged in the circumferential direction at an angular pitch of 120 degrees. Further, a part of the roller holder 15 is disposed adjacent to each roller 13 on the opposite side of the urging spring 14, that is, on the urging spring 14 in the clockwise direction.

  In FIG. 5, the “close” operation of the load switch causes the load connecting member 11a of FIG. 3 to move vertically, and the L-shaped connecting member 11b moves the ground connecting member 11c horizontally to the right. 15 is driven to rotate in the clockwise direction. At this time, in FIG. 6, a part of the roller holder 15 adjacent to the roller 13 is rotationally driven in a direction away from the roller 13, thereby ensuring a state in which the movement of the roller 13 is not hindered.

  Accordingly, each roller 13 is moved in the clockwise direction in the figure by the urging spring 14, and contacts both the drive shaft clutch portion 2 ′ composed of the drive shaft and the inclined surface formed on the inner periphery of the inclined surface forming member 12, The wedge can be engaged.

  At this time, when the drive shaft clutch portion 2 ′ composed of the drive shaft connected to the ground connection member 11 c tries to rotate in the clockwise direction, the frictional force between the outer peripheral cylindrical surface and each roller 13 causes a gap between each roller 13. In this direction, the wedge engagement state is created, and the frictional force prevents the drive shaft clutch portion 2 'from rotating in the clockwise direction. That is, the opening / closing operation of the grounding switch when the load switch is closed is prevented.

  In FIG. 6, the “open” operation of the load switch moves the load connecting member 11a of FIG. 3 vertically, the L-shaped connecting member 11b moves the ground connecting member 11c horizontally to the left, and the roller holder 15 Is rotated counterclockwise.

  At this time, a part of the roller holder 15 adjacent to each roller 13 is in contact with each roller 13 as shown in FIG. 6 and pushes it out in the counterclockwise direction in which the radial clearance increases.

  As a result, each roller 13 is sandwiched between both the drive shaft clutch portion 2 ′ and the inclined surface formed on the inner periphery of the inclined surface forming member 12 and cannot engage with the wedge. At this time, the driving shaft rotates in the clockwise direction, and the frictional force between the driving shaft clutch portion 2 ′ and each roller 13 tries to draw each roller 13 in the direction in which the gap decreases. The cage 15 is in the way.

  As a result, the drive shaft clutch portion 2 'can freely rotate in the clockwise direction without being blocked by the wedge engagement. That is, the above-described one-way clutch interlock 16 prevents the earthing switch from opening and closing when the load switch is “closed”, and prevents the earthing switch from opening and closing when the load switch is “open”. become able to.

It is a top view of the switch by which one Example of the manual operation apparatus of the switch of this invention is employ | adopted. It is sectional drawing which follows AA 'of FIG. It is a front view which shows one Example of the manual operation apparatus of the switch of this invention. It is a perspective view which shows the assembly procedure of the drive shaft and the one-way clutch type interlock part in the manual operation apparatus of the switch of this invention. It is explanatory drawing of the state in which the one-way mechanism part in Example 1 functions, and rotation of a rotational drive system cannot be performed. It is explanatory drawing of the state by which the function of the one-way mechanism part in Example 1 was blocked | prevented and the reverse rotation of the rotational drive system was also attained. It is a figure which shows the manual operation apparatus of the conventional switch.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Load switch drive shaft 2 Ground switch drive shaft 2 'Drive shaft clutch part 3 Load switch drive lever 4 Ground switch drive lever 5 Load switch 6 Ground switch 7 Fixed component 8 Case 9 Load switch rod 10 Ground switch rod 11a Load connection member 11b L-shaped connection member 11c Ground connection member 12 Slope forming member 13 Roller 14 Biasing spring 15 Roller retainer 16 One-way clutch interlock part

Claims (2)

A load switch and a ground switch accommodated in a housing, a manual rod connected to the controller by manually operating an operating device provided outside the housing, and a drive coupled to the manual rod In a manual operating device of a switch that opens and closes by driving a lever in the axial direction of the manual rod,
The drive levers of the load switch and the ground switch are respectively coupled to the drive shafts of the drive mechanisms that drive the load switch and the ground switch, and the drive levers of the load switch are coupled. A load connecting portion is coupled to the symmetrical side of the shaft, the load connecting member is connected to one end of the L-shaped connecting member, and the other end of the L-shaped connecting member drives the ground switch is connected to a ground connecting member coupled to the drive shaft of the drive mechanism for,
The end of the drive shaft that drives the ground switch connected to the ground connection member allows the rotation member of the rotation drive path to rotate in the rotation drive direction with respect to the non-rotation member, and A manual operation device for a switch, comprising a one-way mechanism for preventing reverse rotation by wedge engagement, wherein the one-way mechanism is switched to a state in which the reverse rotation of the rotating member is allowed. In the manual operation apparatus of the switch according to claim 1 ,
The one-way mechanism forms a gap that decreases toward one side in the circumferential direction between the outer peripheral surface of one of the rotating member and the non-rotating member and the other inner peripheral surface, and a rolling element is placed in the gap. An interlocking portion that is incorporated as a wedge member and biased in the direction of decreasing the gap by elastic means is formed, and a holding member disposed adjacent to the circumferential direction of the wedge member and a circumferential direction by external driving Drive means, and the wedge member is pushed by the holding member in the direction opposite to the direction urged by the elastic means to prevent wedge engagement, and the one-way mechanism also rotates the rotating member in the reverse direction. A manual operation device for a switch, characterized in that it is in an allowable state.

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