CN103531377B - A kind of switch with power-off protection - Google Patents
A kind of switch with power-off protection Download PDFInfo
- Publication number
- CN103531377B CN103531377B CN201310544210.2A CN201310544210A CN103531377B CN 103531377 B CN103531377 B CN 103531377B CN 201310544210 A CN201310544210 A CN 201310544210A CN 103531377 B CN103531377 B CN 103531377B
- Authority
- CN
- China
- Prior art keywords
- contact
- button assembly
- armature
- coil
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a kind of switch with power-off protection, comprise housing; Button assembly; And at least one group is used for coil fixed contact, the coil moving contact of closing coil assembly, and at least one group for connecting main fixed contact, the initiatively contact of load circuit; Coil moving contact, initiatively contact are fixedly installed on action contact frame, and coil moving contact is flexible member; Distance between coil moving contact and coil fixed contact is less than the distance initiatively between contact and main fixed contact; Action contact frame is also fixed with armature, one end away from described contact assembly contact of armature is articulated with on coil block, its other end realizes moving up and down under the driving of button assembly, armature is provided with the armature resetting means driving armature to reset, and is provided with the locking device for button assembly being locked in centre position in hull outside.During power failure, initiatively contact is separated with main fixed contact, even if button assembly pressurized, when again sending a telegram here, electric tool also can not work voluntarily, and then improves processing safety.
Description
Technical field
The present invention relates to motor switch field, particularly relate to a kind of switch with power-off protection.
Background technology
For the ease of the control operation to electric tools such as electric drill, electric hammer, electric grinders, its control switch is generally all arranged on the position of handle place forefinger.Traditional Push switch is mainly through button press, and band action contact frame moves downward, and makes the moving contact be arranged on action contact frame contact On current with the fixed contact be arranged on base, and then makes electric tool work.Because the vibration of in use most electric tool is relatively more violent, at this moment the finger of control switch can not keep the button place being pressed on switch all the time because of vibration, thus causes the contact between moving contact and fixed contact unstable.In order to improve the stability of dynamic/static contact contact in switch, usually on electric power tool shell, be provided with cage knob, to ensure that switch is in on-state all the time.But in use once there is unexpected power outage; operating personnel often forget that releasing cage knob is to the locking of dynamic/static contact; when again sending a telegram here; electric tool can at the scene staff milli extemporal situation under work suddenly; this often causes device damage or personal injury accident occurs, and just needs to develop a kind of switch with power-failure protecting function for this reason.
As Chinese patent literature CN101882523A discloses a kind of with the trigger of restarting defencive function that has a power failure, it forms primarily of base body, shell, trigger, cage knob, yoke, coil, magnetic core and armature; Wherein, the mechanical structure portion of base body, shell, trigger, cage knob and relevant structural detail composition switch, the electromagnetic structure part of yoke, coil, magnetic core and armature and relevant electromagnetic component composition switch.This switch is when power-off, and solenoid dead electricity, armature promotes lock hook and is no longer affiliated to cage knob, thus makes trigger eliminate locking, makes the circuit of electric tool disconnect, play the effect of power-off protection under the effect of back-moving spring.But; if switch is held in hand when having a power failure; or touch other object when placing; button is caused to be in pressured state all the time; can not give up the throne to open position, then now switch internal is in on-state always, when again sending a telegram here; electric tool can work immediately, and the trigger that therefore defencive function is restarted in this band power failure still exists larger potential safety hazard in actual use.
At present, even if button pressurized when can solve power failure, the main solution that the dynamic/static contact in switch also can be made to disconnect increases wiring board module between tool side circuit and switch, solved by the mode of electronics, but no matter electronic form is not all very desirable in connecting in breaking capacity, the reliability of components and parts, cost etc., is badly in need of other mode a kind of and solves.
Summary of the invention
For this reason; the technical problem to be solved in the present invention prevents electric tool from starting voluntarily after power-off; and then cause the problem of severe compromise; the switch of band power-off protection provided by the invention at its button of power-off protection position without the need to giving up the throne; even if button receives compressing during power-off; still can disconnect electric tool input circuit, play the effect of power-off protection.
For achieving the above object, the present invention is by the following technical solutions:
With a switch for power-off protection, comprise housing; Button assembly, described button assembly is slidably mounted on described enclosure interior; Contact assembly, described contact assembly comprises at least one group of coil fixed contact for closing coil assembly, coil moving contact, and at least one group for connecting main fixed contact, the initiatively contact of load circuit; Described coil fixed contact, described main fixed contact are fixedly installed on described enclosure interior, and described coil moving contact, described active contact are fixedly installed on action contact frame, and described coil moving contact is flexible member; Distance between described coil moving contact and described coil fixed contact is less than the distance between described active contact and described main fixed contact; Described action contact frame is also fixed with armature, one end away from described contact assembly contact of described armature is articulated with on described coil block, the other end realizes moving up and down under the driving of described button assembly, and described armature is provided with the armature resetting means driving described armature to reset; Described hull outside is provided with the locking device for described button assembly being locked in centre position; When described button assembly mediates, the distance between described button assembly and described armature can make described armature be reset to initial position; When connecting circuit, described button assembly drives described armature to move downward, after first described coil moving contact contacts with described coil fixed contact, described coil block produces armature described in magnetic field suction and moves downward, drive and keep described active contact to contact with described main fixed contact, connecting load circuit; After connection, described button assembly moves to described centre position and is locked by described locking device, now after power-off, and described coil block dead electricity, described armature resets under the effect of armature resetting means, and drives described active contact and described main fixed contact to keep released state; During open circuit, the locking to described button assembly removed by described locking device, and described button assembly moves up to initial position, and drives described coil moving contact to be separated with described coil fixed contact.
Described button assembly is to being extended with pushing part near described armature side, and described pushing part is positioned on the upside of described armature, and when driving described button assembly to move down, described pushing part coordinates with described armature and realizes armature and move down around described hinged place.
Described button assembly is extended with boss to the side near described coil moving contact, described boss is positioned at below described coil moving contact, when driving described button assembly to move up, described boss coordinates with described coil moving contact and realizes described coil moving contact and move up.
The side of the close described boss of described coil moving contact end is provided with the extension coordinated with described boss.
Described active contact is riveted on the relative both sides of described action contact frame respectively with described coil moving contact, and described armature is riveted in the centre position of described action contact frame.
Described coil block comprises coil and supports the bracing frame of described coil, and described armature is hinged on the side plate away from side, described contact of support frame as described above.
One end away from described coil block of described armature is provided with groove, and the side plate away from described button assembly of described coil block is provided with the projection upwards extended, and described groove is plugged into and described projection realizes described armature and described coil block is articulated and connected.
Described armature resetting means is extension spring, one end of described extension spring is articulated to the end away from described button assembly of described armature, and making described groove between described extension spring and described button assembly, the other end of described extension spring is connected with the lower end of described coil component coil block.
The described locking device direction of motion comprised along described button assembly is slidably arranged in the connecting rod between described housing and described button assembly, the upper end of described connecting rod is connected with the upper end of described button assembly, the lower end of described connecting rod is hinged with cage knob, described cage knob is provided with lock dog, the outside of described housing is provided with locked groove, and described lock dog rotates around jointed shaft and snaps in described locked groove to limit the motion of described button assembly.
The below of described button assembly is provided with and drives its push-button reset device moved upward, and described push-button reset device is back-moving spring, and one end of described back-moving spring is against the lower end of described button assembly, and its other end is against the bottom of described housing cavity.
The side of the close described active contact of described button assembly is also provided with boss, and described boss extends to the below of described active contact; The described boss of described active contact side is lower than the described boss of described coil moving contact side.
Beneficial effect of the present invention:
1., in the switch of band power-off protection of the present invention, coil moving contact, initiatively contact are flexible member, and button assembly has initial position, centre position and bottom position; And be provided with locking device button assembly being locked in centre position in hull outside, the distance between coil moving contact and coil fixed contact is less than the distance initiatively between contact and main fixed contact; When button assembly drives armature downwards, coil moving contact is contacted with coil fixed contact, then produce magnetic field suction armature by coil block to move downward, and then initiatively contact is contacted with main fixed contact, for motor switch On current, after On current, button assembly is upwards reset to centre position, simultaneously locked device locking; Under the magnetic fields that solenoid produces, coil moving contact and coil fixed contact, initiatively contact remains with main fixed contact and contacts.During power failure, the magnetic field dissipate that described coil block produces, coil moving contact and active contact are separated with coil fixed contact and main fixed contact respectively under the effect of resetting means, and now, even if again send a telegram here, electric tool also can not work; In addition, the button of cut-offing protecting switch of the present invention is outwards given up the throne without the need to button, even if button assembly is by external force pressure, its inside still can realize the function of power-off protection, and therefore the switch of band power-off protection of the present invention has better security performance.
2. main fixed contact of the present invention is driven by solenoid with the connection of active contact, and response rapidly, guarantees the requirement of switch by testing at a slow speed.
3. circuit disjunction of the present invention relies on the boss propelling coil moving contact on button assembly to be separated with coil fixed contact, after making coil block power-off, magnetic field rapidly disappears, under the effect of extension spring, main fixed contact disconnects rapidly with active contact, and then improves the quick breaking capacity of switch.
4. the side near active contact of button assembly of the present invention is also provided with boss, and make it extend to the vertical below of initiatively contact, this place arrange boss mainly in order to prevent initiatively contact and main fixed contact because of work long hours or other reason stick together and cannot disjunction time, the boss at this place can promote initiatively contact and move upward, realize forcing disjunction, thus improve the breaking capacity of whole switch further.
Accompanying drawing explanation
In order to make the content of invention be more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the overall structure explosive view of band cut-offing protecting switch of the present invention;
Fig. 2 is the electrical schematic diagram of band cut-offing protecting switch of the present invention;
Fig. 3 is the vertical view of band cut-offing protecting switch of the present invention;
Fig. 4 is that the A-A of band cut-offing protecting switch of the present invention when being in initial position is to cutaway view;
Fig. 5 is that the B-B of band cut-offing protecting switch of the present invention when being in initial position is to partial sectional view;
Fig. 6 is that band cut-offing protecting switch of the present invention presses A-A when just contacting to coil dynamic/static contact downwards to cutaway view;
Fig. 7 is that band cut-offing protecting switch of the present invention presses B-B when just contacting to coil dynamic/static contact downwards to partial sectional view;
A-A when Fig. 8 is the coil adhesive armature of band cut-offing protecting switch of the present invention is to cutaway view;
Fig. 9 is that the A-A of band cut-offing protecting switch of the present invention when being in bottom position is to cutaway view;
Figure 10 is that the A-A of band cut-offing protecting switch of the present invention when mediating is to cutaway view;
Figure 11 is that band cut-offing protecting switch of the present invention mediates, and A-A during unexpected power-off is to cutaway view;
Figure 12 is that band cut-offing protecting switch of the present invention mediates, and B-B during unexpected power-off is to cutaway view;
Figure 13 is the structural representation of the boss on button assembly of the present invention when coordinating with the extension on coil moving contact;
Figure 14 is the structural representation of the another kind of execution mode of button assembly;
Structural representation when Figure 15 is locking device non-locking button assembly of the present invention;
Structural representation when Figure 16 is locking device locking press button assembly of the present invention;
Figure 17 is that the C-C of Figure 15 is to cutaway view.
In figure, Reference numeral is expressed as:
1-housing; 2-button assembly; 3-contact assembly; 31-coil fixed contact; 32-coil moving contact; The main fixed contact of 33-; 34-is contact initiatively; 35-action contact frame; 36-armature; 360-groove; 37-pushing part; 38-boss; 39-extension; 4-coil block; 41-side plate; 410-is protruding; 5-extension spring; 6-back-moving spring; 71-connecting rod; 72-cage knob; 73-lock dog; 74-locked groove; 75-spring.
Embodiment
See Fig. 1-2, a kind of switch with power-off protection, comprises housing 1; Button assembly 2, it is inner that described button assembly 2 is slidably mounted on described housing 1; Contact assembly 3, described contact assembly 3 comprises at least one group of coil fixed contact 31 for closing coil assembly 4, coil moving contact 32, and at least one group for connecting main fixed contact 33, the initiatively contact 34 of load circuit; In this enforcement, described coil fixed contact 31, described coil moving contact 32, and described main fixed contact 33, described active contact 34 arrange one group respectively, certainly, also can arrange many groups according to specific needs.It is inner that described coil fixed contact 31, described main fixed contact 33 are fixedly installed on described housing 1, and described coil moving contact 32, described active contact 34 are fixedly installed on action contact frame 35, and described coil moving contact 32, described active contact 34 are flexible member; Distance between described coil moving contact 32 and described coil fixed contact 31 is less than the distance between described active contact 34 and described main fixed contact 33; Described action contact frame 35 is also fixed with armature 36, and one end away from described contact assembly 3 contact of described armature 36 is articulated with on described coil block 4, and its other end realizes moving up and down under the driving of described button assembly 2; Described armature 36 is provided with the armature resetting means driving described armature 36 to reset, as the concrete structure of present embodiment, described armature resetting means is extension spring 5, one end of described extension spring 5 is articulated to the end away from described button assembly 2 of described armature 36, and making described groove 360 between described extension spring 5 and described button assembly 2, the other end of described extension spring 5 is connected with the lower end of described coil component coil block 4.The outside of described housing 1 is provided with the locking device for described button assembly 2 being locked in centre position; When described button assembly 2 mediates; distance between described button assembly 2 and described armature 36 can make described armature 36 be reset to initial position; now described coil moving contact 32 and described coil fixed contact 31; and described active contact 34 is in off-state respectively with described main fixed contact 33, whole switch is in power-off protection state.
See Fig. 3-10, when connecting circuit, described button assembly 2 drives described armature 36 to move downward, first described coil moving contact 32 contacts with described coil fixed contact 31, described coil block 4 produces armature 36 described in magnetic field suction and moves downward, drive and keep described active contact 34 to contact with described main fixed contact 33, connecting load circuit; Now can there is a certain amount of strain because described armature 36 moves downward in described coil moving contact 32, can contact with described main fixed contact 33 to make described active contact 34.After circuit ON in electric tool, described button assembly 2 moves to described centre position from bottom position, and is locked by described locking device; If now suddenly power-off, then the magnetic field dissipate that produces of described coil block 4, described armature 36 resets under the effect of extension spring 5, and drives described active contact 34 to keep released state with described main fixed contact 33.In the present embodiment, described armature 36 only need rotate smaller angle around jointed shaft, can realize described main fixed contact 33 and contacts with described active contact 34 or disconnect.
See Figure 11-13, if the circuit of the electric tool worked is disconnected, then first to remove the locking to described button assembly 2, then described button assembly 2 is upwards reset to initial position, drive described coil moving contact 32 to be separated with described coil fixed contact 31.
As the concrete structure of the switch of band power-off protection of the present invention, in order to make above-mentioned switch disjunction rapid, namely button assembly 2 more easily drives described moving contact 32 to move up, in the present embodiment, described button assembly 2 is extended with boss 38 to the side near described coil moving contact 32, described boss 38 is positioned at below described coil moving contact 32, the side of the close described boss 38 of described coil moving contact 32 end is provided with the extension 39 coordinated with described boss 38, described boss 38 coordinates with described coil moving contact 32 and realizes described coil moving contact 32 and move up with described button assembly 2.
Contact reliably in order to make button assembly 2 with described armature, in the present embodiment, described button assembly 2 is extended with pushing part 37 near described armature 36 side, described pushing part 37 is positioned on the upside of described armature 36, when driving described button assembly 2 to move down, described pushing part 37 coordinates with described armature 36 and realizes armature 36 and move down around described hinged place.
In the present embodiment, described active contact 34 is riveted on the relative both sides of described action contact frame 35 respectively with described coil moving contact 32, described armature 36 is riveted in the centre position of described action contact frame 35, and making described active contact 34, described coil moving contact 32, the substantially parallel setting of described armature 36, the contact of described coil moving contact 32, described active contact 34 is close to described button assembly 2.
Described coil block 4 comprises coil and supports the bracing frame of described coil, and described armature 36 is hinged on the side plate 41 away from side, described contact of support frame as described above.Above-mentioned articulated structure adopts following concrete structure, one end away from described coil block 4 of described armature 36 is provided with groove 360, the side plate 41 away from described button assembly 2 of described coil block 4 is provided with the projection 410 upwards extended, and described groove 360 is plugged into and realizes described armature 36 on described protruding 410 and be articulated and connected with described coil block 4.
See Figure 15-17, in the present embodiment, the described locking device direction of motion comprised along described button assembly 2 is slidably arranged in the connecting rod 71 between described housing 1 and described button assembly 2, the upper end of described connecting rod 71 extends to described button assembly 2 side, and being provided with U-shaped opening, this open card is received in the undergauge section of described button assembly 2 upper end setting; The lower end of described connecting rod 71 is hinged with cage knob 72, and described cage knob 72 is provided with lock dog 73, and the outside of described housing 1 is provided with locked groove 74, and described lock dog 73 rotates to snap in described locked groove 74 around jointed shaft and moves to limit described button assembly 2; On connecting rod, be also provided with the spring 75 forcing button assembly 2 to move up to initial position in addition, the upper end of described spring 75 is against the high spot in the middle part of connecting rod 71, and its lower end is against on Switch main body; When button assembly 2 moves upward to centre position by bottom position, press cage knob 72 and make it rotate around jointed shaft, and make described lock dog 73 snap in described locked groove 74, now connecting rod 71 is locked, and button assembly 2 can not move up and down.
See Figure 13, in the present embodiment, the below of described button assembly 2 is provided with and drives its push-button reset device moved upward, and described push-button reset device is back-moving spring 6, one end of described back-moving spring 6 is against the lower end of described button assembly 2, and its other end is against the bottom of described housing 1 inner chamber.Arrange back-moving spring in the below of described button assembly 2, being convenient to described button assembly 2 can be moved upward to centre position from bottom position automatically, or described button assembly 2 is moved to initial position from centre position.Certainly, described push-button reset device also can not be set in other embodiments, when described button assembly 2 is resetted, can directly manual button assembly 2 upwards be pulled up to initial position.
See Figure 14, as another embodiment of the invention, the side of the close described active contact 34 of described button assembly 2 is also provided with boss 38, and described boss 38 extends to the below of described active contact 34; The described boss 38 of described active contact 34 side arrives the described boss 38 of active contact 34 disjunction distance slightly larger than described coil moving contact 32 side to coil moving contact 32 disjunction distance.Arrange at this place boss 38 mainly in order to prevent initiatively contact 34 and main fixed contact 33 because Long contact time or other reason stick together cannot disjunction time, the boss 38 at this place is when being moved to initial position by centre position with described button assembly 2, initiatively can promote initiatively contact 34 to move upward, realize forcing disjunction, thus improve the breaking capacity of whole switch further, guarantee Electrical Safety; Under normal circumstances, once the magnetic of coil block 4 disappears, then initiatively contact 34 can be separated rapidly under the effect of extension spring 5 with main fixed contact 33, and then ensures that switch can meet the requirement of the test of disjunction at a slow speed.
Above-mentioned embodiment is just explained in detail technical scheme of the present invention; the present invention has more than and is only confined to above-described embodiment; those skilled in the art should be understood that; every improvement on basis of the present invention according to above-mentioned principle and spirit, substitute, all should within protection scope of the present invention.
Claims (10)
1. the switch with power-off protection, comprises housing (1); Button assembly (2), it is inner that described button assembly (2) is slidably mounted on described housing (1); Contact assembly (3), described contact assembly (3) comprises at least one group of coil fixed contact (31) for closing coil assembly (4), coil moving contact (32), and at least one group for connecting main fixed contact (33), the initiatively contact (34) of load circuit;
It is characterized in that:
It is inner that described coil fixed contact (31), described main fixed contact (33) are fixedly installed on described housing (1), described coil moving contact (32), described active contact (34) are fixedly installed on action contact frame (35), and described coil moving contact (32) is flexible member; Distance between described coil moving contact (32) and described coil fixed contact (31) is less than the distance between described active contact (34) and described main fixed contact (33); Described action contact frame (35) is also fixed with armature (36), one end away from described contact assembly (3) contact of described armature (36) is articulated with on described coil block (4), other end realization under the driving of described button assembly (2) moves up and down, and described armature (36) is provided with the armature resetting means driving described armature (36) to reset;
Described housing (1) outside is provided with the locking device for described button assembly (2) being locked in centre position; When described button assembly (2) mediates, the distance between described button assembly (2) and described armature (36) can make described armature (36) be reset to initial position; Described button assembly (2) is extended with boss (38) to the side near described coil moving contact (32), described boss (38) is positioned at described coil moving contact (32) below, when driving described button assembly (2) to move up, described boss (38) coordinates with described coil moving contact (32) and realizes described coil moving contact (32) and move up;
When connecting circuit, described button assembly (2) drives described armature (36) to move downward, after described coil moving contact (32) first contacts with described coil fixed contact (31), described coil block (4) produces armature (36) described in magnetic field suction and moves downward, drive and keep described active contact (34) to contact with described main fixed contact (33), connecting load circuit; After connection, described button assembly (2) moves to described centre position and is locked by described locking device, now after power-off, described coil block (4) dead electricity, described armature (36) resets under the effect of armature resetting means, and drives described active contact (34) and described main fixed contact (33) to keep released state; During open circuit, the locking to described button assembly (2) removed by described locking device, and described button assembly (2) moves up to initial position, and drives described coil moving contact (32) to be separated with described coil fixed contact (31).
2. a kind of switch with power-off protection according to claim 1; it is characterized in that: described button assembly (2) is extended with pushing part (37) near described armature (36) side; described pushing part (37) is positioned at described armature (36) upside; when driving described button assembly (2) to move down, described pushing part (37) coordinate with described armature (36) and realize described armature (36) and move down around described hinged place.
3. a kind of switch with power-off protection according to claim 1 and 2, is characterized in that: the side of the close described boss (38) of described coil moving contact (32) end is provided with the extension (39) coordinated with described boss (38).
4. a kind of switch with power-off protection according to claim 1; it is characterized in that: described active contact (34) is riveted on the relative both sides of described action contact frame (35) respectively with described coil moving contact (32), described armature (36) is riveted in the centre position of described action contact frame (35).
5. a kind of switch with power-off protection according to claim 1 or 2 or 4; it is characterized in that: described coil block (4) comprises coil and supports the bracing frame of described coil, described armature (36) is hinged on the side plate away from side, described contact (41) of support frame as described above.
6. a kind of switch with power-off protection according to claim 1 or 2 or 4; it is characterized in that: one end away from described coil block (4) of described armature (36) is provided with groove (360); the side plate away from described button assembly (2) (41) of described coil block (4) is provided with the projection (410) upwards extended, and described groove (360) is plugged into and described projection (410) realizes described armature (36) and be articulated and connected with described coil block (4).
7. a kind of switch with power-off protection according to claim 6; it is characterized in that: described armature resetting means is extension spring (5); one end of described extension spring (5) is articulated to the end away from described button assembly (2) of described armature (36); and making described groove (360) be positioned between described extension spring (5) and described button assembly (2), the other end of described extension spring (5) is connected with the lower end of described coil component coil block (4).
8. a kind of switch with power-off protection according to claim 1 or 2 or 4 or 7, it is characterized in that: the described locking device direction of motion comprised along described button assembly (2) is slidably arranged in the connecting rod (71) between described housing (1) and described button assembly (2), the upper end of described connecting rod (71) is connected with the upper end of described button assembly (2), the lower end of described connecting rod (71) is hinged with cage knob (72), described cage knob (72) is provided with lock dog (73), the outside of described housing (1) is provided with locked groove (74), described lock dog (73) rotates around jointed shaft and snaps in described locked groove (74) to limit described button assembly (2) motion.
9. a kind of switch with power-off protection according to claim 1 or 2 or 4 or 7; it is characterized in that: the below of described button assembly (2) is provided with and drives its push-button reset device moved upward; described push-button reset device is back-moving spring (6); one end of described back-moving spring (6) is against the lower end of described button assembly (2), and its other end is against the bottom of described housing (1) inner chamber.
10. a kind of switch with power-off protection according to claim 1 or 2 or 4 or 7, it is characterized in that: the side of the close described active contact (34) of described button assembly (2) is also provided with boss (38), and described boss (38) extends to the below of described active contact (34); The described boss (38) of described active contact (34) side is lower than the described boss (38) of described coil moving contact (32) side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310544210.2A CN103531377B (en) | 2013-11-06 | 2013-11-06 | A kind of switch with power-off protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310544210.2A CN103531377B (en) | 2013-11-06 | 2013-11-06 | A kind of switch with power-off protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103531377A CN103531377A (en) | 2014-01-22 |
| CN103531377B true CN103531377B (en) | 2015-09-23 |
Family
ID=49933309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310544210.2A Active CN103531377B (en) | 2013-11-06 | 2013-11-06 | A kind of switch with power-off protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103531377B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538216A (en) * | 2014-12-25 | 2015-04-22 | 宁波卡派斯电子科技有限公司 | Button switch with power-off protection module |
| CN108257830B (en) * | 2018-03-21 | 2024-03-01 | 浙江中讯电子有限公司 | Leakage protector |
| CN109586372B (en) * | 2018-12-14 | 2022-06-07 | 中山市昌迪电子有限公司 | Automatic circuit-breaking protection device for mobile phone charging head |
| CN109920665B (en) * | 2019-04-17 | 2022-06-24 | 国网安徽省电力有限公司滁州供电公司 | Electromagnetic axis lock power switch device |
| CN111899996B (en) * | 2020-08-12 | 2022-08-19 | 河南中烟工业有限责任公司 | Automatic cut-off method for low-voltage reverse power transmission of power distribution network |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200962407Y (en) * | 2006-10-26 | 2007-10-17 | 郑春开 | Electromagnetic switch |
| CN201311882Y (en) * | 2008-11-13 | 2009-09-16 | 浙江科都电气制造有限公司 | Electromagnetic switch provided with locking mechanism |
| EP2187419A2 (en) * | 2008-11-14 | 2010-05-19 | Chunkai Zheng | Relay-switch |
| CN103280359A (en) * | 2013-06-04 | 2013-09-04 | 科都电气有限公司 | Pressed-type switch with kick function |
| CN203521230U (en) * | 2013-11-06 | 2014-04-02 | 科都电气有限公司 | Switch with power-off protection |
-
2013
- 2013-11-06 CN CN201310544210.2A patent/CN103531377B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200962407Y (en) * | 2006-10-26 | 2007-10-17 | 郑春开 | Electromagnetic switch |
| CN201311882Y (en) * | 2008-11-13 | 2009-09-16 | 浙江科都电气制造有限公司 | Electromagnetic switch provided with locking mechanism |
| EP2187419A2 (en) * | 2008-11-14 | 2010-05-19 | Chunkai Zheng | Relay-switch |
| CN103280359A (en) * | 2013-06-04 | 2013-09-04 | 科都电气有限公司 | Pressed-type switch with kick function |
| CN203521230U (en) * | 2013-11-06 | 2014-04-02 | 科都电气有限公司 | Switch with power-off protection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103531377A (en) | 2014-01-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103531377B (en) | A kind of switch with power-off protection | |
| US9184010B2 (en) | Rapid tri-state bidirectional switching device | |
| CN203521230U (en) | Switch with power-off protection | |
| CN203631438U (en) | Auxiliary contact head with shunt release | |
| CN103560029B (en) | Switch with power-off protection function | |
| RU2716822C2 (en) | Disengaging mechanism for switch | |
| CN106992086B (en) | A kind of rotary type micro limit switch | |
| CN203721545U (en) | Press switch with power failure protection | |
| CN103346046A (en) | Switch trip device | |
| US8742271B2 (en) | Electric plug | |
| CN211173483U (en) | Electronic padlock | |
| CN203521227U (en) | Switch with power-off protection function | |
| CN103646826A (en) | Novel action mechanism of electrical leakage protection module | |
| CN110060897A (en) | A kind of integrated switch | |
| CN200976336Y (en) | Creepage breaker having on-off indicating equipment | |
| CN209561248U (en) | A kind of integrated switch | |
| CN202712625U (en) | Mechanical self-locking disposable electric plug provided with switch | |
| CN202772020U (en) | Alarm switch | |
| CN202339893U (en) | Electric switch-on and switch-off device for small breaker | |
| CN219534345U (en) | Safe and reliable button switch | |
| CN219267492U (en) | Safety switch and switch module thereof | |
| CN218996611U (en) | Linkage piece and leakage protector | |
| CN203562352U (en) | Automobile button switch | |
| CN211578606U (en) | Safety switch | |
| CN102693855A (en) | Safety micro-motion device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 325608 Puqi Industrial Zone, Hongqiao Town, Leqing City, Wenzhou City, Zhejiang Province Patentee after: Kedu Electric Co.,Ltd. Address before: 325608 Block C, Puqi Industrial Zone, Hongqiao Town, Yueqing City, Wenzhou City, Zhejiang Province Patentee before: KEDU ELECTRIC Co.,Ltd. |
|
| CP03 | Change of name, title or address |