Photovoltaic insulation blocking switch
Technical field
The present invention relates to a kind of switch, be specifically related to a kind of photovoltaic insulation blocking switch.
Background technology
Photovoltaic isolating switch is in high-voltage switch electric appliance, to use maximum a kind of switches, as its name suggests, plays buffer action in circuit.Its functional reliability requires high, and the operation on electrical network, power plant and foundation impact are all larger.After traditional isolating switch is communicated with power supply and external loading, in the time that electric current is excessive, the load meeting that isolating switch exceedes expection is burned, and causes short circuit, has larger potential safety hazard.
In order to address the above problem, the patent No. is that the patent of CN201410020365 discloses a kind of " photovoltaic insulation blocking switch assembly ", eliminate safe hidden trouble to reach, effect simple in structure, it comprises, include Switch main body, at least two groups that are series in Switch main body are moved, fixed contact, button and be located at button and moving contact between moving contact linkage unit, wherein one group is moved, fixed contact is power input, another group is power output end, Switch main body is installed in a box body, the fuse of connecting with the power output end in Switch main body is installed in box body, the lid that box body includes the body for holding Switch main body and fuse and fastens with body, the installation place that lid is positioned at fuse is provided with transparence and renovates, but because the lid at fuse place does not arrange locking device, easily open in photovoltaic isolating switch work mistiming, cause misoperation, bring unnecessary injury or loss to staff or equipment.
Summary of the invention
The deficiency existing for prior art, the object of the present invention is to provide a kind of easy to operate and photovoltaic insulation blocking switch that security performance is good.
For achieving the above object, the invention provides following technical scheme: comprise housing, switch module and fuse, described switch module and fuse are all arranged in housing, on described housing, be provided with the knob of control switch assembly, on described housing, the position corresponding with fuse is provided with window and closed window and openable lid, it is characterized in that: between described knob and lid, be provided with and in the time that knob indicator cock assembly is unlatching, prevent the interlock that lid is opened.
By adopting technique scheme, the setting of interlock avoids photovoltaic isolating switch work mistiming to open the lid for enclosed fuse, avoid misoperation and cause bring unnecessary injury or loss to staff or equipment, security performance is better, and rotate and in the time that switch module is opened, automatically prevent that lid from opening at knob, operate easier.
The present invention is further set to: described housing is positioned at knob surrounding and is provided with knob base, on described knob base, be provided with open position and the close stance of indicator cock assembly operating state, described knob base is positioned at open position and is provided with lock slots, described interlock comprises the interlocking segment being fixedly installed with lid, the described interlocking segment other end fixing with lid at lid and housing when closed and lock slots corresponding, on described knob, be provided with the operating block of operation knob, described operating block is positioned to the latch well that forms interlocking segment end above lock slots one end during in open position in knob rotation.
By adopting technique scheme, at knob, the open position in knob base and lock slots form the latch well of interlocking segment end to operating block on knob, lid is locked by knob, only have lid in the time rotating to closed position just can open, realize its security performance.
The present invention is further set to: described lid one end is articulated with between housing and its hinged end and housing and is provided with the resetting device of automatically opening, and the movable end of this lid is provided with the locking mechanism that lid is locked in to housing.
By adopting technique scheme; the lid that is articulated with housing and automatically open can be opened more laborsaving; and when photovoltaic insulation blocking switch is in the time that vertical installation needs repairing; lid can stay open; locking mechanism is set, and the guarantee period can be kept closed after keeping in repair or change; avoid dust or other impurity to enter, affect fuse and switch module performance.
The present invention is further set to: described locking mechanism comprises locking piece, described locking piece middle part is provided with installing hole, described installing hole is provided with slippage relatively and is fixed on the axis of guide of lid, described locking piece one end is as the operating side for controlling, the other end is as keyed end, the breach arranging on described keyed end and housing wall blocks and joins mutually, is provided with the delivery device resetting along axis of guide glide direction to breach on described lid.
By adopting technique scheme, can be along the locking piece of axis of guide slippage, its keyed end can near and away from breach, coordinate the delivery device can be from the reset of trend breach in the time that itself and housing are closed, realization automatically locks.
The present invention is further set to: described locking piece can be made circuit oscillation along the axis of guide, on described lid, be provided with the bootstrap block fitting with locking piece, described bootstrap block guiding locking part in the time that locking piece is made circuit oscillation is done moving away from breach along axis of guide glide direction.
By adopting technique scheme, circumferentially the relative straight line of operational lock part is more laborsaving, when operation also more smoothly, by bootstrap block by locking piece in circuit oscillation along axis of guide glide direction moving linearly, make the unlatching of lid convenient, more meet Reusability.
The present invention is further set to: described delivery device comprises the propelling movement spring being installed with between keyed end and the lid of locking piece.
By adopting technique scheme, spring is simple in structure, easy for installation as return unit, be swift in response, and is well suited for providing reset force for pushing keyed end.
The present invention is further set to: on described lid, be provided with the jointed shaft that is articulated with housing, described resetting device comprises the torsion spring that is sheathed on jointed shaft, and described torsion spring one end and lid fix, and the other end and housing fix.
By adopting technique scheme, torsion spring is simple in structure, easy for installation as return unit, be swift in response, and is well suited for automatically opening reset force being provided for lid.
Below in conjunction with the drawings and specific embodiments, the invention will be further described in operation.
Brief description of the drawings
Fig. 1 is the stereogram of the specific embodiment of the invention;
Fig. 2 is the explosive view of the specific embodiment of the invention;
Fig. 3 is the explosive view of lid in the specific embodiment of the invention;
Fig. 4 is the assembling stereogram of lid and locking piece in the specific embodiment of the invention;
Fig. 5 is the sectional arrangement drawing of lid and locking piece in the specific embodiment of the invention.
Embodiment
As Figure 1-Figure 5, the invention discloses a kind of photovoltaic insulation blocking switch, comprise housing 1, switch module 2 and fuse 3, switch module 2 and fuse 3 are all arranged in housing 1, on housing 1, be provided with the knob 4 of control switch assembly 2, on housing 1, the position corresponding with fuse 3 is provided with window 11 and closed window 11 and openable lid 5, between knob 4 and lid 5, be provided with and in the time that knob 4 indicator cock assemblies are unlatching, prevent the interlock that lid 5 is opened, the setting of interlock avoids photovoltaic isolating switch work mistiming to open the lid 5 for enclosed fuse, avoid misoperation and cause bring unnecessary injury or loss to staff or equipment, security performance is better, and rotate and in the time that switch module is opened, automatically prevent that lid 5 from opening at knob 4, operate easier.
Housing 1 is positioned at knob 4 surroundings and is provided with knob base 41, on knob base 41, be provided with open position and the close stance of indicator cock assembly operating state, knob base 41 is positioned at open position and is provided with lock slots 42, interlock comprises the interlocking segment 6 being fixedly installed with lid 5, interlocking segment 6 other end fixing with lid 5 in the time that lid 5 and housing 1 are closed and lock slots 42 corresponding, on knob 4, be provided with the operating block 43 of operation knob, operating block 43 one end in the time that knob 4 rotates in open position is positioned to the latch well 44 that forms interlocking segment 6 ends above lock slots 42, at knob 4, the open position in knob base 41 and lock slots 42 form the latch well 44 of interlocking segment 6 ends to operating block 43 on knob 4, lid 5 is locked by knob 4, only have lid 5 in the time that rotation 4 is rotated to closed position just can open, realize its security performance.
Lid 5 one end are articulated with between housing and its hinged end and housing and are provided with the resetting device of automatically opening; the movable end of this lid 5 is provided with the locking mechanism that lid 5 is locked in to housing 1; the lid 5 that is articulated with housing 1 and automatically open can be opened more laborsaving; and when photovoltaic insulation blocking switch is in the time that vertical installation needs repairing; lid can stay open; locking mechanism is set, and the guarantee period can be kept closed after keeping in repair or change; avoid dust or other impurity to enter, affect fuse and switch module performance.
Locking mechanism comprises locking piece 7, locking piece 7 middle parts are provided with installing hole 71, installing hole 71 is provided with slippage relatively and is fixed on the axis of guide 51 of lid 5, locking piece 7 one end are as the operating side 72 for controlling, the other end is as keyed end 73, the breach 12 arranging on keyed end 73 and housing 1 wall blocks and joins mutually, on lid 5, be provided with the delivery device resetting along axis of guide glide direction to breach, can be along the locking piece of axis of guide slippage 7, its keyed end 73 can near and away from breach, coordinate delivery device can reset from trend breach 11 during with housing 1 closure at it, realization automatically locks, the axis of guide 51 also can be fixedly installed on interlocking segment 6.
Locking piece 7 can be made circuit oscillation along the axis of guide 51, on lid 5, be provided with the bootstrap block 52 fitting with locking piece 7, when bootstrap block 52 is made circuit oscillation at locking piece 7, guiding locking part 7 is done moving away from breach along the axis of guide 51 glide directions, circumferentially the relative straight line of operational lock part 7 is more laborsaving, when operation also more smoothly, by bootstrap block 52 by locking piece in circuit oscillation along the axis of guide 51 glide direction moving linearlies, make the unlatching of lid 5 convenient, more meet Reusability.
Delivery device comprises the propelling movement spring 53 being installed with between keyed end 73 and the lid 5 of locking piece 7, spring is simple in structure, easy for installation as return unit, be swift in response, be well suited for providing reset force for pushing keyed end, push between spring 53 and lid 5 and be provided with swingable and flexible lock dog 531, make to push 53 moment of spring just to locking piece, balance is more installed.
On lid 5, be provided with the jointed shaft 54 that is articulated with housing 1, resetting device comprises the torsion spring 55 that is sheathed on jointed shaft 54, torsion spring 55 one end and lid 5 fix, the other end and housing 1 fix, torsion spring 55 is simple in structure, easy for installation as return unit, be swift in response, and is well suited for automatically opening reset force being provided for lid 5.
As shown in Figure 5, in the time of needs release lid 5, the operating side of locking piece 7 72 is upwards cocked, until the keyed end 73 of locking piece 7 is inconsistent with bootstrap block 52, cannot continue to lower swing, keyed end 73 just moves locking piece 7 until operating side 72 is deviate from the breach 12 on housing 1 completely to the left shown in figure along the guide surface 56 of bootstrap block 5, unclamp behind the operating side 72 of locking piece 7, pushing spring 53 promotes keyed end 73 to form locking until both block to join mutually to breach 12, also can above locking piece 7, bootstrap block be set, principle is identical.