阅读说明：本技术 一种家用电器具有电压稳定性检测功能的通断装置 (On-off device with voltage stability detection function for household electrical appliance ) 是由 盛萌萌 于 2021-09-15 设计创作，主要内容包括：本发明涉及一种通断装置,尤其涉及一种家用电器具有电压稳定性检测功能的通断装置。本发明要解决的技术问题为：提供一种能够自动断开和复位通电的家用电器具有电压稳定性检测的通断装置。一种家用电器具有电压稳定性检测功能的通断装置,包括有框体、侧板、固定栓、第一支架和电源线,框体的两侧均设有侧板,侧板上均设置有至少两个固定栓,框体的内壁两侧均通过螺栓固接有第一支架,第一支架与同侧固定栓之间均连接有电源线。人们可通过转动第二旋钮使得丝杆进行旋转,进而会通过螺母使得横块进行上下移动,进而调节减速片高度,进而能够调节减速片与圆盘的接触力度,从而来调节限制第二转轴转动速度,进而可以调节再次通电的速度。(The invention relates to an on-off device, in particular to an on-off device with a voltage stability detection function for a household appliance. The technical problem to be solved by the invention is as follows: a household electrical appliance capable of automatically turning off and resetting power-on is provided with a switching device for voltage stability detection. The utility model provides an on-off device that domestic appliance has voltage stability and detects function, including framework, curb plate, gim peg, first support and power cord, the both sides of framework all are equipped with the curb plate, all are provided with two at least gim pegs on the curb plate, and the inner wall both sides of framework all have first support through the bolt rigid coupling, all are connected with the power cord between first support and the homonymy gim peg. People's accessible rotates the second knob and makes the lead screw rotate, and then can make the horizontal piece reciprocate through the nut, and then adjusts the reduction gears height, and then can adjust the contact dynamics of reduction gears and disc to adjust and restrict second pivot slew velocity, and then can adjust the speed of circular telegram once more.)

1. The utility model provides an on-off device that domestic appliance has voltage stability and detects function which characterized in that: the device comprises a frame body (1), side plates (2), fixing bolts (3), a first support (4), a power line (5), a second support (6), guide blocks (7), a mounting frame (8), an on-off assembly (9) and a return assembly (10), wherein the side plates (2) are arranged on two sides of the frame body (1), at least two fixing bolts (3) are arranged on the side plates (2), the first support (4) is fixedly connected on two sides of the inner wall of the frame body (1) through bolts, the power line (5) is connected between the first support (4) and the fixing bolts (3) on the same side, the second support (6) is symmetrically connected on the frame body (1), at least two guide blocks (7) are arranged on the second support (6), the inner side end part of the power line (5) penetrates through the second support (6) on the same side to be connected with the corresponding guide blocks (7), the mounting frame (8) is fixedly connected on two sides of the frame body (1) through bolts, the frame body (1) is provided with a component (9) for disconnecting and communicating the household appliance and the external power supply, and the frame body (1) is provided with a return component (10) for automatically resetting and communicating the connection.

2. An on-off device with voltage stability detecting function for a home appliance according to claim 1, wherein: break-make subassembly (9) are including guide bar (91), riser (92), mount (93), guide vane (94) and even board (95), the both sides of framework (1) all slidingly are connected with guide bar (91), be connected with riser (92) between guide bar (91), be provided with two at least mounts (93) on framework (1), equal rotary type is connected with guide vane (94) on mount (93), guide vane (94) and guide block (7) cooperation, equal rotary type is connected with even board (95) between guide vane (94) and riser (92).

3. A switching device having a voltage stability detecting function of a home appliance according to claim 2, wherein: the return assembly (10) comprises a special-shaped frame (101), a baffle plate (102), a first rotating shaft (103), a first knob (104), a fixing rod (105), a clockwork spring (106), a reel (107), a first guide plate (108) and a pull wire (109), the special-shaped frame (101) is arranged on one side of the frame body (1), the baffle plate (102) is arranged on the special-shaped frame (101), the first rotating shaft (103) is rotatably connected on the special-shaped frame (101), the front side of the first rotating shaft (103) penetrates through the baffle plate (102) to be connected with the first knob (104), the fixing rod (105) is connected on the special-shaped frame (101), the clockwork spring (106) is connected between the fixing rod (105) and the first rotating shaft (103), the reel (107) is connected on the first rotating shaft (103), the first guide plate (108) is fixedly connected on the special-shaped frame (101) through bolts, and the pull wire (109) is wound on the reel (107), the tail end of the pull wire (109) passes through the first guide plate (108) and is connected with the rear side of the guide rod (91).

4. A switching device having a voltage stability detecting function of a home appliance according to claim 3, wherein: the special-shaped frame is characterized by further comprising a speed reducing assembly (11), the speed reducing assembly (11) comprises a fixing block (111), a second rotating shaft (112), a pinion (113), a gearwheel (114), a shell (115), a disc (116), a screw rod (117), a nut (118), a cross block (119), a speed reducing piece (1110) and a second knob (1111), the fixing block (111) is arranged on the special-shaped frame (101), the fixing block (111) is rotatably connected with the second rotating shaft (112), the pinion (113) is connected to the second rotating shaft (112), the gearwheel (114) is connected to the first rotating shaft (103), the gearwheel (114) is meshed with the pinion (113), the shell (115) is arranged on the special-shaped frame (101), the disc (116) is connected to the second rotating shaft (112), the screw rod (117) is rotatably connected to the shell (115), the nut (118) is connected to the screw rod (117) through threads, and the cross block (119) is connected to the nut (118), the transverse block (119) is connected with the shell (115) in a sliding mode, a speed reduction piece (1110) is connected to the transverse block (119), the speed reduction piece (1110) is matched with the disc (116), and the lower side of the screw rod (117) penetrates through the shell (115) to be connected with a second knob (1111).

5. An on-off device with voltage stability detecting function for a home appliance according to claim 4, wherein: the electric power transmission device is characterized by further comprising a pushing assembly (12), wherein the pushing assembly (12) comprises a shell (121), a special-shaped plate (122), an electromagnet (123), a swinging plate (124), a common gear (125), a torsion spring (126), a rack (127), a metal block (128), a sliding plate (129), a contact block (1210) and a common spring (1211), the shell (121) is arranged on the frame body (1), the special-shaped plate (122) is connected to the frame body (1) in a sliding mode, the special-shaped plate (122) is matched with the upper side guide rod (91), the special-shaped plate (122) is located inside the shell (121), the electromagnet (123) is arranged on the frame body (1), the electromagnet (123) is electrically connected with the left side power line (5), a rotating rod is connected to the frame body (1) in a rotating mode, the middle of the rotating rod is connected with the swinging plate (124), the common gear (125) is connected to one side of the rotating rod, the torsion spring (126) is connected between the rotating rod and the frame body (1), the special-shaped plate (122) is connected with a rack (127), the rack (127) is matched with a common gear (125), the swinging plate (124) is connected with a metal block (128), the metal block (128) is matched with the electromagnet (123), the swinging plate (124) is connected with a sliding plate (129) in a sliding mode, the sliding plate (129) is connected with a contact block (1210), the contact block (1210) is matched with an upper side guide rod (91), and a common spring (1211) is connected between the sliding plate (129) and the swinging plate (124).

6. An on-off device for a home appliance having a voltage stability detecting function according to claim 5, wherein: still including sheltering from subassembly (13), shelter from subassembly (13) including fixed plate (131), articulated plate (132) and apron (133), what the symmetry was gone up in framework (1) is connected with fixed plate (131), and equal rotary type is connected with articulated plate (132) on fixed plate (131), all is connected with apron (133) on articulated plate (132).

7. An on-off device with voltage stability detecting function for a home appliance according to claim 6, wherein: still including fixed subassembly (14), fixed subassembly (14) are including second deflector (141), slider (142), pulling piece (143) and limiting plate (144), all be connected with second deflector (141) on apron (133), all be connected with slider (142) on second deflector (141) slidingly, all be connected with pulling piece (143) on slider (142), be connected with limiting plate (144) on riser (92), limiting plate (144) and slider (142) cooperation.

8. An on-off device with voltage stability detecting function for a home appliance according to claim 7, wherein: the pulling block (143) is sleeved with a rubber ring, which is convenient for people to grasp.

Technical Field

The invention relates to an on-off device, in particular to an on-off device with a voltage stability detection function for a household appliance.

Background

Domestic appliance needs to be connected with external power source and uses, when external power voltage is unstable, thereby can lead to domestic appliance constantly to stop and start work, and then lead to the domestic appliance short circuit, in order to protect domestic appliance, can use the on-off device to protect domestic appliance usually, present on-off device is when external voltage is unstable, need manual control on-off device to break off domestic appliance and need be connected with external power source, and then reach the effect of protection domestic appliance, but protection domestic appliance that can not be timely, and after the disconnection domestic appliance is connected with external power source, can not the automatic re-setting circular telegram, therefore the operation is comparatively troublesome.

It is therefore desirable to design a switching device for a household appliance capable of automatically switching off and resetting the power supply with a voltage stability detection function.

Disclosure of Invention

In order to overcome the defects that the prior on-off device needs manual power-off and automatic reset power-on and is troublesome to operate, the technical problem to be solved is as follows: provided is an on-off device for a household appliance capable of automatically turning off and resetting power supply, having a voltage stability detection function.

The technical implementation scheme of the invention is as follows: the utility model provides an on-off device that domestic appliance has voltage stability and detects function, which comprises a frame body, the curb plate, the gim peg, first support, the power cord, the second support, the guide block, a mounting bracket, break-make subassembly and return subassembly, the both sides of framework all are equipped with the curb plate, all be provided with two at least gim pegs on the curb plate, the inner wall both sides of framework all have first support through the bolt rigid coupling, all be connected with the power cord between first support and the homonymy gim peg, the symmetry is connected with the second support in the framework, all be provided with two at least guide blocks on the second support, the medial extremity of power cord all passes and is connected with the homonymy second support and corresponds the guide block, the both sides of framework all have the mounting bracket through the bolt rigid coupling, be equipped with disconnection and intercommunication domestic appliance and external power source connection subassembly in the framework, be equipped with the return subassembly that automatic re intercommunication was connected in the framework.

As further preferred scheme, the break-make subassembly is including guide bar, riser, mount, guide vane and even board, and the equal slidingtype in both sides of framework is connected with the guide bar, is connected with the riser between the guide bar, is provided with two at least mounts in the framework, and equal rotary type is connected with the guide vane on the mount, and guide vane cooperation, equal rotary type are connected with even board between guide vane and the riser.

As a further preferred scheme, the return assembly comprises a special-shaped frame, a baffle plate, a first rotating shaft, a first knob, a fixed rod, a clockwork spring, a winding wheel, a first guide plate and a pull wire, wherein the special-shaped frame is arranged on one side of the frame body, the baffle plate is arranged on the special-shaped frame, the first rotating shaft is rotatably connected to the special-shaped frame, the front side of the first rotating shaft penetrates through the baffle plate and is connected with the first knob, the fixed rod is connected to the special-shaped frame, the clockwork spring is connected between the fixed rod and the first rotating shaft, the winding wheel is connected to the first rotating shaft, the first guide plate is fixedly connected to the special-shaped frame through a bolt, the pull wire is wound on the winding wheel, and the tail end of the pull wire penetrates through the first guide plate and is connected with the rear side of the guide rod.

As a further preferred scheme, the novel speed reduction device further comprises a speed reduction assembly, the speed reduction assembly comprises a fixed block, a second rotating shaft, a pinion, a gearwheel, a shell, a disc, a screw rod, a nut, a transverse block, a speed reduction piece and a second knob, the fixed block is arranged on the special-shaped frame, the second rotating shaft is connected to the fixed block in a rotating mode, the pinion is connected to the second rotating shaft, the gearwheel is connected to the first rotating shaft, the gearwheel is meshed with the pinion, the shell is arranged on the special-shaped frame, the disc is connected to the second rotating shaft, the screw rod is connected to the shell in a rotating mode, the nut is connected to the screw rod through threads, the transverse block is connected to the nut in a sliding mode, the transverse block is connected to the shell in a sliding mode, the speed reduction piece is matched with the disc, and the lower side of the screw rod penetrates through the shell to be connected with the second knob.

As a further preferable scheme, the device also comprises a pushing assembly, the pushing assembly comprises a shell, a special-shaped plate, an electromagnet, a swinging plate, a common gear, a torsion spring, a rack, a metal block, a sliding plate, a contact block and a common spring, the shell is arranged on the frame body, the special-shaped plate is connected on the frame body in a sliding way and matched with the upper side guide rod, the special-shaped plate is positioned in the shell, the electromagnet is arranged on the frame body and electrically connected with a left side power line, the rotating rod is connected on the frame body in a rotating way, the swinging plate is connected at the middle part of the rotating rod, the common gear is connected at one side of the rotating rod, the torsion spring is connected between the rotating rod and the frame body, the rack is connected on the special-shaped plate and matched with the common gear, the metal block is connected on the swinging plate and matched with the electromagnet, the sliding plate is connected with the sliding plate in a sliding way and connected with the contact block on the sliding plate, the contact block is matched with the upper side guide rod, and a common spring is connected between the sliding plate and the swinging plate.

As a further preferred scheme, still including sheltering from the subassembly, shelter from the subassembly including fixed plate, articulated slab and apron, the symmetry is connected with the fixed plate in the framework, and the equal rotary type is connected with the articulated slab on the fixed plate, all is connected with the apron on the articulated slab.

As further preferred scheme, still including fixed subassembly, fixed subassembly all is connected with the second deflector on the apron including second deflector, slider, pulling piece and limiting plate, all is connected with the slider on the second deflector, all is connected with pulling piece on the slider, is connected with the limiting plate on the riser, limiting plate and slider cooperation.

As a further preferred scheme, the pulling block is sleeved with a rubber ring, so that the pulling block is convenient for people to grasp.

The invention has the beneficial effects that:

1. people's accessible rotates the second knob and makes the lead screw rotate, and then can make the horizontal piece reciprocate through the nut, and then adjusts the reduction gears height, and then can adjust the contact dynamics of reduction gears and disc to adjust and restrict second pivot slew velocity, and then can adjust the speed of circular telegram once more.

2. Under the unstable condition of external power supply voltage, can lead to the electro-magnet to lose magnetic force, and then no longer adsorb the metal block, torque spring recovers to drive the bull stick this moment, the swing board, ordinary gear and sliding plate rotate 90 degrees, and then make the sliding plate can stir the guide bar and move forward to make guide plate and guide block disconnection contact, thereby disconnection domestic appliance is connected with external power supply, and then can effectively protect domestic appliance not influenced by external power supply voltage.

3. The cover plate can block the front side of the frame body, so that internal parts are protected, and the aging of the internal parts can be effectively prevented.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of the present invention.

FIG. 2 is a schematic view of a first partial body structure according to the present invention.

Fig. 3 is a schematic perspective view of a second embodiment of the present invention.

FIG. 4 is a schematic view of a second partial body structure according to the present invention.

Fig. 5 is a schematic perspective view of a first embodiment of the switching assembly of the present invention.

Fig. 6 is a schematic perspective view of a second embodiment of the switching assembly of the present invention.

Fig. 7 is a schematic view of a first partial body structure of the return assembly of the present invention.

Fig. 8 is a schematic view of a second partial body structure of the return assembly of the present invention.

Fig. 9 is a perspective view of a third portion of a return assembly in accordance with the present invention.

Fig. 10 is a perspective view of a fourth partial return assembly of the present invention.

Figure 11 is a schematic view of a first partial body structure of the deceleration assembly of the present invention.

Figure 12 is a schematic view of a second partial body structure of the deceleration assembly of the present invention.

Figure 13 is a perspective view of a third portion of the speed reduction assembly of the present invention.

FIG. 14 is a schematic view of a first partially assembled body of the pushing assembly of the present invention.

FIG. 15 is a schematic view of a second partially assembled body of the pushing assembly of the present invention.

Fig. 16 is a perspective view of a third portion of a pushing assembly according to the present invention.

Fig. 17 is a perspective view of a fourth portion of the pushing assembly of the present invention.

FIG. 18 is a schematic view of a fifth partial body structure of a pushing assembly according to the present invention.

FIG. 19 is a schematic view of a sixth partial body structure of a pushing assembly according to the present invention.

FIG. 20 is a perspective view of the shielding assembly of the present invention.

Fig. 21 is a perspective view of the fixing member of the present invention.

Fig. 22 is a partial perspective view of the fastening assembly of the present invention.

Wherein: 1: frame, 2: side plate, 3: fixing bolt, 4: first bracket, 5: power supply line, 6: second bracket, 7: guide block, 8: mounting frame, 9: on-off assembly, 91: guide bar, 92: a riser, 93: mount, 94: guide vane, 95: connecting plate, 10: return assembly, 101: special-shaped frame, 102: shielding plate, 103: first rotating shaft, 104: first knob, 105: fixing a rod, 106: a clockwork spring, 107: reel, 108: first guide plate, 109: stay wire, 11: deceleration assembly, 111: fixed block, 112: second rotating shaft, 113: pinion, 114: large gear, 115: a housing, 116: disc, 117: screw rod, 118: nut, 119: cross piece, 1110: speed reduction piece, 1111: second knob, 12: pushing assembly, 121: housing, 122: a profiled sheet, 123: electromagnet, 124: swing plate, 125: common gear, 126: torsion spring, 127: rack, 128: metal block, 129: a sliding plate, 1210: contact block, 1211: ordinary spring, 13: a shielding assembly, 131: fixing plate, 132: hinge plate, 133: cover plate, 14: fixing component, 141: second guide plate, 142: slider, 143: pulling block, 144: and a limiting plate.

Detailed Description

The following further describes the technical solution with reference to specific embodiments, and it should be noted that: the words upper, lower, left, right, and the like used herein to indicate orientation are merely for the location of the illustrated structure in the corresponding figures. The serial numbers of the parts are themselves numbered herein, for example: first, second, etc. are used solely to distinguish one from another as to objects described herein, and do not have any sequential or technical meaning. The application states that: the connection and coupling, unless otherwise indicated, include both direct and indirect connections (couplings).

Example 1

An on-off device with voltage stability detection function for a household appliance is shown in figures 1-10 and comprises a frame body 1, side plates 2, fixing bolts 3, a first support 4, a power line 5, a second support 6, guide blocks 7, a mounting frame 8, an on-off component 9 and a return component 10, wherein the side plates 2 are arranged on the left side and the right side of the frame body 1, the three fixing bolts 3 are arranged in the middle of the side plates 2 from top to bottom, the first support 4 is fixedly connected to the left side and the right side of the inner wall of the rear portion of the frame body 1 through bolts, the power line 5 is connected between the first support 4 and the fixing bolts 3 on the same side, the second support 6 is symmetrically connected to the middle of the frame body 1 from top to bottom, the three guide blocks 7 are arranged on the inner side of the second support 6 from top to bottom, the end portion of the power line 5 penetrates through the second support 6 on the same side to be connected with the corresponding guide blocks 7, the mounting frame 8 is fixedly connected to the left side and the right side of the rear portion of the frame body 1 through bolts, the middle part of the frame body 1 is provided with an on-off component 9, and the lower side of the middle part of the frame body 1 is provided with a return component 10.

When the household appliance is required to be connected with an external power supply, the on-off device can be used, firstly, the external power supply is connected with a left power line 5 through a left fixing bolt 3, the household appliance is connected with a right power line 5 through a right fixing bolt 3, under the condition that an on-off component 9 is in contact with a guide block 7, the current of the external power supply can be transmitted to the household appliance, when the household appliance is required to be disconnected with the external power supply, the on-off component 9 is controlled, the on-off component 9 is separated from the guide block 7, further, the current can not be transmitted, meanwhile, the on-off component 9 is separated from the guide block 7 and can also drive a return component 10 to operate, when the household appliance is required to be continuously electrified, the on-off component 9 is not controlled any more, at the moment, the return component 10 can be automatically reset and drives the on-off component 9 to be reset, and the on-off component 9 is enabled to be in contact with the guide block 7 again to conduct electricity.

The on-off component 9 is including guide bar 91, riser 92, mount 93, guide vane 94 and even board 95, and the equal slidingtype in both sides is connected with guide bar 91 about the middle part of framework 1, is connected with riser 92 between the front side of guide bar 91, and the rear portion inner wall of framework 1 is arranged from top to bottom and is provided with three mount 93, and the equal rotary type in front of mount 93 is connected with guide vane 94, and guide vane 94 cooperates with guide block 7, and equal rotary type is connected with even board 95 between guide vane 94 and the riser 92.

The return assembly 10 comprises a special-shaped frame 101, a shielding plate 102, a first rotating shaft 103, a first knob 104, a fixing rod 105, a clockwork spring 106, a winding wheel 107, a first guide plate 108 and a pull wire 109, the special-shaped frame 101 is arranged at the bottom of the frame body 1, the shielding plate 102 is arranged on the front side of the special-shaped frame 101, the first rotating shaft 103 is rotatably connected to the middle of the special-shaped frame 101, the first knob 104 is connected to the front side of the first rotating shaft 103 through the shielding plate 102, the fixing rod 105 is connected to the right upper portion of the inner side of the special-shaped frame 101, the clockwork spring 106 is connected between the fixing rod 105 and the first rotating shaft 103, the winding wheel 107 is connected to the rear side of the first rotating shaft 103, the first guide plate 108 is fixedly connected to the rear side of the lower portion of the special-shaped frame 101 through a bolt, the pull wire 109 is wound on the winding wheel 107, and the tail end of the pull wire 109 passes through the first guide plate 108 and is connected to the rear side of the guide rod 91.

When the household appliance is required to be connected with an external power supply, the external power supply and the household appliance are respectively connected with a corresponding power line 5 through a fixing bolt 3, under the condition that a guide vane 94 is in contact with a guide block 7, the current of the external power supply can be transmitted to the household appliance, when the household appliance is required to be disconnected from the external power supply, a vertical plate 92 is manually controlled to move towards the front side, so that a guide rod 91 moves towards the front side, the vertical plate 92 drives the guide vane 94 to rotate through a connecting plate 95, so that the guide vane 94 is not in contact with the guide block 7 any more, the current cannot be transmitted, meanwhile, the guide vane 91 moves forwards and pulls a pull wire 109, so that a reel 107 rotates, so that a first rotating shaft 103 and a first knob 104 are driven to rotate, a clockwork spring 106 deforms, when the household appliance is required to be continuously electrified, the guide vane 91 is not controlled any more, and the clockwork spring 106 can automatically reset, therefore, the parts are driven to reversely operate and reset, so that the guide vane 94 is contacted with the guide block 7 again for conduction, and if the power-on speed needs to be accelerated, the first knob 104 can be manually controlled to reversely rotate, so that the resetting can be accelerated.

Example 2

On the basis of embodiment 1, as shown in fig. 2, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21 and 22, the reduction gear assembly 11 further comprises a reduction gear assembly 11, wherein the reduction gear assembly 11 comprises a fixing block 111, a second rotating shaft 112, a pinion 113, a gearwheel 114, a housing 115, a disc 116, a screw 117, a nut 118, a cross block 119, a reduction plate 1110 and a second knob 1111, the fixing block 111 is arranged on the inner side of the bottom of the special-shaped frame 101, the fixing block 111 is rotatably connected with the second rotating shaft 112, the pinion 113 is connected to the rear side of the second rotating shaft 112, the gearwheel 114 is connected to the middle of the first rotating shaft 103, the gearwheel 114 is engaged with the pinion 113, the housing 115 is arranged on the lower side of the special-shaped frame 101, the disc 116 is connected to the middle of the second rotating shaft 112, the screw 117 is rotatably connected with the screw 117 by a screw thread 118, the front side of the nut 118 is connected with a transverse block 119, the transverse block 119 is connected with the shell 115 in a sliding manner, the upper side of the transverse block 119 is connected with a decelerating sheet 1110, the decelerating sheet 1110 is matched with the disc 116, and the lower side of the screw rod 117 penetrates through the shell 115 to be connected with a second knob 1111.

When the speed of electrifying again needs to be adjusted, the second knob 1111 can be rotated to rotate the screw 117, the nut 118 can be used for moving the cross block 119 up and down, the height of the speed reduction piece 1110 can be adjusted, the contact force between the speed reduction piece 1110 and the disc 116 can be adjusted, and therefore the rotation speed of the second rotating shaft 112 can be adjusted and limited, and the speed of electrifying again can be adjusted.

The device also comprises a pushing component 12, the pushing component 12 comprises a shell 121, a special-shaped plate 122, an electromagnet 123, a swinging plate 124, a common gear 125, a torsion spring 126, a rack 127, a metal block 128, a sliding plate 129, a contact block 1210 and a common spring 1211, the shell 121 is arranged at the rear side of the frame body 1, the special-shaped plate 122 is connected to the upper rear side of the frame body 1 in a sliding manner, the special-shaped plate 122 is matched with the upper guide rod 91, the special-shaped plate 122 is positioned in the shell 121, the electromagnet 123 is arranged on the inner wall of the left upper rear side of the frame body 1, the electromagnet 123 is electrically connected with the left power line 5, a rotating rod is connected to the inner wall of the top rear side of the frame body 1 in a rotating manner, the swinging plate 124 is connected to the middle of the rotating rod, the common gear 125 is connected to the lower side of the rotating rod, the torsion spring 126 is connected between the upper side of the rotating rod and the frame body 1, the rack 127 is connected to the front side of the left part of the special-shaped plate 122, and the rack 127 is matched with the common gear 125, the swing plate 124 has a metal block 128 connected to the left side thereof, the metal block 128 is engaged with the electromagnet 123, a slide plate 129 is slidably connected to the right side of the swing plate 124, a contact block 1210 is connected to the right side of the slide plate 129, the contact block 1210 is engaged with the upper guide bar 91, and a normal spring 1211 is connected between the slide plate 129 and the swing plate 124.

In a normal state, the torsion spring 126 is in a deformation state, and the resilience of the torsion spring 126 is greater than that of the spring 106, so that the electromagnet 123 loses magnetic force under the condition that the voltage of an external power supply is unstable, and further the metal block 128 is not adsorbed any more, at this time, the torsion spring 126 recovers to drive the rotating rod, the swinging plate 124, the common gear 125, the sliding plate 129 and the contact block 1210 to rotate 90 degrees, and further the contact block 1210 can stir the guide rod 91 to move forwards, so that the guide sheet 94 is disconnected from the guide block 7 through the vertical plate 92, and the connection between the household appliance and the external power supply is disconnected without being pushed by a human hand, so that the household appliance can be effectively protected from the voltage of the external power supply, meanwhile, the common gear 125 rotates to drive the rack 127 and the special-shaped plate 122 to move forwards for a distance, and when the contact block 1210 rotates to be separated from the guide rod 91, the spring 106 begins to recover, thereby driving the guide rod 91 to move and reset to the rear side, when the guide rod 91 is contacted with the special-shaped plate 122, the profiled plate 122 is pushed to move slightly to the rear side, so that the rack 127 moves to the rear side, and further drives the rotation lever, the swing plate 124, the common gear 125 and the sliding plate 129 to rotate in opposite directions for a certain distance, after the voltage of the external power supply is stabilized, the electromagnet 123 can generate magnetic force again, and further adsorb the metal block 128 again, at this time, the rotating lever, the swing plate 124, the common gear 125, the sliding plate 129 and the contact block 1210 are driven to rotate reversely and reset, at this time, the contact block 1210 resets, because the rear side of the contact block 1210 is an inclined plane and the contractibility of the common spring 1211, the contact block 1210 is not blocked, so that the contact block 1210 is reset to the rear side of the guide bar 91, and at the same time the spring 106 is fully restored, the guide piece 94 is brought into contact with the guide block 7 again, so that the home appliance is connected to the external power source again.

Still including sheltering from subassembly 13, shelter from subassembly 13 including fixed plate 131, articulated plate 132 and apron 133, the anterior upside bilateral symmetry of framework 1 is connected with fixed plate 131, and the equal rotary type is connected with articulated plate 132 on the fixed plate 131, and the downside of articulated plate 132 all is connected with apron 133.

The cover plate 133 can block the front side of the frame body 1, so that internal parts are protected, aging of the internal parts can be effectively prevented, when the inspection and maintenance are needed, the hinge plate 132 can be controlled to rotate through the cover plate 133, the cover plate 133 is turned upwards to be opened, the internal parts of the on-off device can be inspected and maintained, and after the inspection and maintenance are completed, the hinge plate 132 is controlled to enable the cover plate 133 to rotate downwards to be closed.

Still including fixed subassembly 14, fixed subassembly 14 is including second deflector 141, slider 142, pulling piece 143 and limiting plate 144, and the downside of apron 133 all is connected with second deflector 141, all has slider 142 on the second deflector 141 sliding connection, and the downside of slider 142 all is connected with pulling piece 143, and the lower part front side of riser 92 is connected with limiting plate 144, and limiting plate 144 cooperates with slider 142.

When the household appliance is connected with an external power supply, the limiting plate 144 blocks the sliding block 142, so that the second guide plate 141 and the cover plate 133 are limited, and the cover plate 133 cannot be opened; when the cover plate 133 needs to be opened, the connection between the household appliance and an external power supply can be selectively disconnected, so that the vertical plate 92 moves towards the front side, the limiting plate 144 is driven to move towards the front side, the sliding block 142 is not clamped by the limiting plate 144, the second guide plate 141 and the cover plate 133 are not limited, and the cover plate 133 can be controlled to be opened; optionally, the pulling block 143 is controlled to move the sliding block 142 outward, so that the sliding block 142 is separated from the limiting plate 144, the cover plate 133 can be opened, when the cover plate 133 needs to be closed, the cover plate 133 is closed by rotating downward, the vertical plate 92 is controlled to move backward by manpower, so that the limiting plate 144 is driven to move backward, the limiting plate 144 is enabled to clamp the sliding block 142 again, and the second guide plate 141 and the cover plate 133 can be limited; the pulling block 143 can also be selectively controlled to move the slider 142 inward, so that the slider 142 is engaged with the stopper plate 144, and the cover 133 can be closed.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.