CN1170975A - Safety socket - Google Patents
Safety socket Download PDFInfo
- Publication number
- CN1170975A CN1170975A CN 96107072 CN96107072A CN1170975A CN 1170975 A CN1170975 A CN 1170975A CN 96107072 CN96107072 CN 96107072 CN 96107072 A CN96107072 A CN 96107072A CN 1170975 A CN1170975 A CN 1170975A
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- Prior art keywords
- push rod
- connector
- socket
- support
- roof door
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- Connector Housings Or Holding Contact Members (AREA)
Abstract
The power socket consists of face board, top door, push lever spring, conductive pin, support with spring, contact, wiring terminal, casing and other parts. It may be used in household, office and other places, especially is suitable for being mounted at lower place of household. It features that only standard plug can make it conduct, and this makes it have electric shock preventing function.
Description
The present invention is a kind of supply socket.
In the environment of our daily life, work, the employed socket overwhelming majority does not have electroshock-proof function.Especially the socket that low level is installed in the dwelling house usually makes the safety concerns of the heads of a family for the child.
Existing partial socket; the form that employing adds " shutter " solves this problem; the socket that adds shutter mainly contains two kinds: a kind of is the socket of built-in shutter; promptly between receptacle sockets and connector, settle a shutter, connector charged in the socket is covered by the spring closedtop.When the plug insertion, the inclined-plane on shutter produces component and makes shutter by jack-up, and plug could contact power supply; Another kind is external shutter " an enclosed type safety socket "; its patent No. is 932001564; its feature is: settle a shutter that is headed on by spring in the receptacle sockets outside; have on the shutter and the same shape of the jack of socket own; unidimensional patchhole; when socket did not use, the jack position of jack on its shutter and socket itself produced " dislocation ", made the insertion object can not touch charged connector in the socket.
These sockets have following defective in actual use: built-in protection gate-type socket, with objects such as iron nail, key be easy to insert and contact the electricity connector; Though external protection gate-type socket is safe and reliable, to follow the operation sequence of " inserting--mobile plug and shutter--inserts again " when using, its inconvenient operation.
Task of the present invention is that a kind of improved supply socket will be provided, and it had both had electroshock-proof function, and was safe and reliable, is applicable to that standard plug is easy to operate again.
Task of the present invention is finished as follows: the binding post of socket directly is not communicated with the connector that patches plug, but be connected separately on two contacts of being fixed on the Socket casing skeleton, be that circuit between binding post and the connector is that branch disconnects, the electric current that is connected in the external power supply on the binding post can not directly arrive on the connector, being communicated with of circuit between binding post and the connector, " bridge formation " that need have the conducting strip of good conductive ability is used for realizing.Conducting strip is fixed on the support, and support is installed in the Socket casing, support can move up and down in Socket casing certain distance or rotating certain angle.The moving up and down or rotate being communicated with or disconnection of circuit between the binding post that determining socket and the connector of support.This socket mainly by socket panel, roof door, balancing spring, joist, push rod, push rod spring, support, stand spring, contact, terminals give, conducting strip, connector and housing etc. form.Insulating material such as socket panel, housing, roof door, push rod, support employing plastics are made; Conducting strip, contact, binding post, connector are then made with the material that copper, silver etc. has a good conductive ability.Push rod chamber, roof door that roof door, push rod, balancing spring, push rod spring are installed between socket panel and the connector are indoor; Support, stand spring, contact, binding post, connector are installed in the Socket casing.Being installed on the cross section of the indoor roof door of roof door has the inclined-plane, and the jack of inclined-plane on the socket panel makes jack be sealing or semi-closed state.Roof door is indoor a joist, and when socket did not use, the center of roof door placed on this joist, realizes balance by the elastic force of balancing spring, and promptly the line at two jack centers is parallel on roof door and the socket panel.Roof door also can be around the joist rotating certain angle in the indoor certain distance that not only can move up and down of roof door.Be to be installed on indoor push rod of push rod and push rod spring above the roof door, push rod is in the indoor certain distance that can move up and down of push rod.Push rod is being controlled the motion of the support of installing in the Socket casing in indoor the moving up and down of push rod, thereby makes the conducting strip contact of being fixed on the support or break away from the contact, makes circuit communication or disconnection between binding post and the connector.The effect of push rod spring is to provide power for moving downward of push rod, roof door.The support that is fixed with conducting strip has two kinds of forms: a kind of is arm-type, and promptly support and push rod are made one, and support moves up and down and moves up and down with push rod; Another kind is the lever support, be that support is a lever construction, the A end is fixed with conducting strip, the B end is sold in the pin block or pin-and-hole of push rod, the C point is a fixed rotating shaft, the length of A end is greater than the length of B end, and the lever support is furnished with the stand spring of an afterburning usefulness, and the elastic force of stand spring is less than the elastic force of push rod spring.When using socket, plug inserts from the jack on the socket panel, inclined-plane on roof door produces component upwards simultaneously at the two ends of roof door, push rod on roof door and the roof door is moved upward, push rod spring is compressed, at this moment, if what install in the socket is the support arm cribbing, then the support arm cribbing rises with push rod, conducting strip on the support contacts two contacts and forms " bridge formation ", be communicated with the circuit between binding post and the connector, thereby make the electric current of the external power supply that connects on the binding post arrive connector and the plug that inserts connector; If what install in the socket is the lever support, then support rotates around the axis under the elastic force effect of stand spring, B holds rising, A holds decline, make the conducting strip that is fixed in support A end contact two contacts and form " bridge formation ", be communicated with the circuit between socket binding post and the connector, thereby make the electric current of the external power supply that connects on the binding post arrive connector and the plug that inserts connector.Transfer to plug, because the elastic force effect of push rod spring, push rod, roof door move downward immediately, terminate in the roof door center and place on the joist.At this moment, the support arm cribbing moves downward with push rod, makes the conducting strip that is fixed in break away from two contacts, makes the circuit between binding post and the connector be returned to off-state; And if installation is the lever support in the socket, after transfering to plug, push rod, roof door move downward, the support B end of pin in push rod pin block or pin-and-hole is pressed downward, the A end is to rising, simultaneously stand spring is compressed, and the conducting strip that is fixed in support A end breaks away from and the contacting of two contacts with the rising of A end, thereby makes the circuit between binding post and the connector be returned to off-state.Like this, connector in the socket is no longer charged, if there is size of human to be less than or equal to the arbitrary jack insertion of the object of receptacle sockets size from socket, roof door is subjected to force unbalance around the joist rotating certain angle because of two ends, roof door can be by whole jack-up, push rod just can not move upward yet, and can not move by the support of push rod control yet, and binding post still can not be communicated with circuit between the connector, do not have on the connector, so, contacting connector even disclose, can not shocked by electricity yet.
The present invention is described in further detail below in conjunction with accompanying drawing.
Fig. 1, Fig. 2 are vertical cross-sectional schematic of concrete structure of the present invention.
Wherein: 1-socket panel 2-jack
3-push rod spring 4-push rod
5-push rod pin block 7-roof door
8-joist 9-lever support
10-support arm cribbing 11-conducting strip
12-rotating shaft 13-contact
14-binding post 15-external power supply
16-connector 19-Socket casing
22-body frame 23-stand spring
The 24-balancing spring
Fig. 3 is the cross-sectional schematic that cooperates that push rod adopts pin-and-hole structure and lever support.
Wherein: 6-push rod pin-and-hole
Fig. 4 is the combination schematic diagram that is installed on the indoor push rod spring in push rod chamber, roof door, push rod, roof door, balancing spring.
Wherein: 21-roof door chamber, 20-push rod chamber
Sight schematic diagram when Fig. 5 is object insertion socket.
Wherein: 17-inserts object
Fig. 6, Fig. 7, Fig. 8 are the sight schematic diagrames of plug insertion socket.
Wherein: the 18-plug.
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, external power supply (15) is connected in binding post (14), but terminals give (14) directly not to be communicated with connector (16), but be connected separately on two contacts of being fixed on the body frame (22) (13), promptly the circuit between binding post (14) and the connector (16) is that branch disconnects.Conducting strip (11) with good conductive ability is fixed on support (9) or (10), rotating shaft (12) rotating certain angle that the A of support (9), B two ends can be ordered around C; Support (10) is then because of being that the support arm of push rod (4) can be with push rod (4) certain distance that moves up and down.Push rod spring (3) and push rod (4) are installed in the push rod chamber (20) between socket panel (1) and the connector (16), in the roof door chamber (21) below push rod chamber (20) roof door (7) and balancing spring (24) are installed then.On the cross section of roof door (7) inclined-plane is arranged, the jack (2) of inclined-plane on the socket panel (1) makes jack (2) be semiclosed or closed state.When socket did not use, the center of roof door (7) placed on the interior joist (8) in roof door chamber (21), and balancing spring (24) makes its two ends keep balance.Roof door (7) certain distance that both can move up and down in roof door chamber (21), its two ends also can be around joist (8) rotating certain angle.The push rod of installing in the push rod chamber (20) (4) certain distance that can in push rod chamber (20), move up and down.Roof door (7) and push rod (4) move downward the elastic force of required power resources in push rod spring (3).The lever support of installing in the Socket casing (19) (9) is furnished with a stand spring (23), and the elastic force of stand spring (23) is less than the elastic force of push rod spring (3).The A end of lever support (9) is being fixed conducting strip (11), and the B end is sold in the pin block (5) or pin-and-hole (6) of push rod (4), and the C point is rotating shaft (12), and the length of A end is greater than the length of B end.Moving up and down of roof door (7) and push rod (4) apart between 2mm-jack height.Disconnect because the circuit between binding post (14) and the connector (16) is a branch, the electric current that binding post (14) is gone up the external power supply (15) that connects can not arrive connector (16), so connector (16) is not charged.
Insert in the socket from the arbitrary jack of socket (2) with reference to Fig. 5 one object (17), roof door (7) is subjected to force unbalance because of two ends, its two ends are around joist (8) rotating certain angle, roof door (7) is not moved upward by whole jack-up, thereby the push rod (4) above the roof door (7) just can not move upward yet, also can not move accordingly by support (9) or (10) of push rod (4) control, conducting strip (11) still can not contact contact (13), so, circuit between binding post (14) and the connector (16) still is in the disjunction state, connector (16) is not charged, and object (17) even disclose contacts connector (16) and discloses the person of touching and also can not shocked by electricity.
With reference to Fig. 6, Fig. 7, Fig. 8, plug (18) inserts from receptacle sockets (2), inclined-plane on roof door (7) produces component upwards simultaneously at the two ends of roof door (7), roof door (7), push rod (4) are by plug (18) jack-up, push rod spring (3) is compressed, support arm cribbing (10) rises with push rod (4), makes conducting strip (11) contact two contacts of being fixed in (13); Lever support (9) is under the elastic force effect of stand spring (23), and A, B two ends are around C point rotating shaft (12) rotating certain angle, and promptly the A end is to decline, and B holds to rising, is fixed in conducting strip (11) contact two contacts (13) of A end.So, circuit between binding post (14) and the connector (16) just is communicated with because of " bridge formation " effect of conducting strip (11), and the electric current that is connected in the external power supply (15) on the binding post (14) arrives connector (16) and inserts the interior plug (18) of connector (16).
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, after transfering to plug (18), push rod (4), roof door (7) is under the elastic force effect of push rod spring (3), move downward, the center that terminates in roof door (7) places on the joist (8), simultaneously, support arm cribbing (10) moves downward with push rod (4), makes conducting strip (11) break away from two contacts (13); Lever support (9) is then because of the elastic force of push rod spring (3) elastic force greater than stand spring (23), and pin is pressed downward in the pin block (5) or the end of the B in the pin-and-hole (6) of push rod (4), the A end is then to rising, compressed stent spring (23) is fixed in conducting strip (11) the disengaging contact (13) that A holds simultaneously.So, the circuit between socket binding post (14) and the connector (16) is returned to off-state again.
Claims (4)
1, a kind of supply socket, directly be communicated with between the binding post (14) that it is characterized in that socket and the connector (16), but be connected separately on two contacts of being fixed on the body frame (22) (13), be that circuit between binding post (14) and the connector (16) is that branch disconnects, the electric current that is connected in the external power supply (15) on the binding post (14) can not directly arrive the connector (16) that is used to patch plug (18), circuit is communicated with between binding post (14) and the connector (16), " bridge formation " that need have the conducting strip (11) of good conductive ability is used for realizing, conducting strip (11) is fixed on support (9) or (10), support (9) or (10) are installed in the Socket casing (19), support (9) or (10) can rotating certain angle or certain distances that moves up and down, make conducting strip (11) contact of being fixed in or break away from contact (13), thereby the circuit between connection or disconnection binding post (14) and the connector (16), between connector (16) in the socket and the socket panel (1) push rod chamber (20) and roof door chamber (21) are arranged, push rod spring (3) and push rod (4) are installed in the push rod chamber (20), in the roof door chamber (21) below the push rod chamber (20) roof door (7) is housed then, roof door (7), push rod (4) certain distance that can move up and down, and the motion by the control support (9) or (10) that moves up and down, thereby the binding post (14) of control socket and connect circuit communication or disconnection between the special part (16).
2, socket according to claim 1, it is characterized in that support (9) is a lever construction, the A end of support (9) is being fixed conducting strip (11), the B end is sold in the pin block (5) or pin-and-hole (6) of push rod (4), the C point is fixed rotating shaft (12), the A end length of support (9) is held length greater than B, A, the B two ends can be around C point rotating shaft (12) rotating certain angle, support (9) is furnished with a stand spring (23), its effect is that the rotation for support (9) provides power, the elastic force of stand spring (23) is less than the elastic force of push rod spring (3), when using socket, plug (18) inserts from jack (2), roof door (7), push rod (4) is moved upward by plug (18) jack-up, push rod spring (3) is compressed, support (9) is under the elastic force effect of stand spring (23), A, the B two ends are around C point rotating shaft (12) rotating certain angle, be that the A end is pressed downward, the B end is to rising, make conducting strip (11) contact two contacts (13) of being fixed in support (9) A end, form " bridge formation " with the circuit communication between binding post (14) and the connector (16), thereby the electric current that makes external power supply (15) arrives connector (16) and inserts the plug (18) of connector (16), when not using socket, transfer to plug (18), push rod (4) and roof door (7) move downward under the elastic force effect of push rod spring (3), the B of support (9) end is depressed because of pin holds B in the pin block (5) of push rod (4) or pin-and-hole (6), the A end is to rising, stand spring (23) is compressed simultaneously, the conducting strip (11) that is fixed in the A end breaks away from contact (13), circuit between binding post (14) and the connector (16) is disconnected, and connector (16) is no longer charged.
3, socket according to claim 1, it is characterized in that support (10) is the support arm cribbing, be that support (10) is an one with push rod (4), support (10) is the support arm of push rod (4), when using socket, plug (18) inserts from jack (2), roof door (7), push rod (4) is moved upward by plug (18) jack-up, push rod spring (3) is compressed, support (10) is also with push rod (4) certain distance that moves upward, make conducting strip (11) contact two contacts of being fixed on the support (10) (13) form " bridge formation ", thereby be communicated with the circuit between binding post (14) and the connector (16), the electric current of external power supply (15) arrives connector (16) and inserts the interior plug (18) of connector (16), when not using socket, transfer to plug (18), push rod (4), roof door (7) and support (10) move downward under the elastic force effect of push rod spring (3), make the conducting strip (11) that is fixed on the support (10) break away from two contacts (13), thereby make the circuit between binding post (14) and the connector (16) be returned to off-state, connector (16) is no longer charged.
4, socket according to claim 1, roof door has the inclined-plane on (7), the jack (2) of inclined-plane on the socket panel (1), make jack (2) be sealing or semi-closed state, it is characterized in that a joist (8) is arranged in the roof door chamber (21), when socket does not use, the center of roof door (7) places on the joist (8), roof door (7) certain distance that can not only move up and down, its two ends also can be around joist (8) rotating certain angle, roof door (7) is furnished with balancing spring (24), its effect is that socket is not when using, rely on its elastic force to make the center place the two ends of the roof door (7) on the joist (8) to keep balance, the line of centres that is roof door (7) and two jacks (2) is parastate, when using socket, plug (18) inserts from two jacks (2), produce component upwards simultaneously at the two ends of roof door (7) through the inclined-plane of roof door (7), roof door (7) and push rod (4) are moved upward, thereby the circuit between binding post (14) and the connector (16) is connected, when not using socket, transfer to plug (18), push rod (4) and roof door (7) move downward under the elastic force effect of push rod spring (3), the center that terminates in roof door (7) places on the joist (8), circuit between binding post of socket (14) and the connector (16) is returned to off-state, connector (16) is no longer charged, if be less than or equal to the object (17) of jack (2) size inserts in arbitrary jack (2) with a size, the two ends of roof door (7) turn an angle around joist (8) because of being subjected to force unbalance, roof door (7) can be by whole jack-up, be that roof door (7) and push rod (4) can not move upward, therefore the binding post (14) of socket and the circuit between the connector (16) can not be connected, electric current on the external power supply (15) can not arrive connector (16), so, and object (17) is disclosed contact connector (16) also can not cause disclosing the person of touching to be shocked by electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96107072A CN1074181C (en) | 1996-07-15 | 1996-07-15 | Safety socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96107072A CN1074181C (en) | 1996-07-15 | 1996-07-15 | Safety socket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1170975A true CN1170975A (en) | 1998-01-21 |
| CN1074181C CN1074181C (en) | 2001-10-31 |
Family
ID=5119511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96107072A Expired - Fee Related CN1074181C (en) | 1996-07-15 | 1996-07-15 | Safety socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1074181C (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916935A (en) * | 2010-08-09 | 2010-12-15 | 杜红亮 | Safety receptacle |
| CN102074833A (en) * | 2010-12-30 | 2011-05-25 | 重庆邮电大学 | Safety socket |
| CN105406245A (en) * | 2015-12-21 | 2016-03-16 | 宁波云飚电器科技有限公司 | Safety socket with cooling function |
| CN105977098A (en) * | 2016-06-29 | 2016-09-28 | 珠海格力电器股份有限公司 | Overheat protection device and electric appliance |
| CN106785622A (en) * | 2016-11-28 | 2017-05-31 | 马建伟 | A kind of lever safety socket |
| CN106848698A (en) * | 2017-02-27 | 2017-06-13 | 广州雅隆自动化设备有限公司 | A kind of electric power safety socket device |
| CN107369987A (en) * | 2017-09-12 | 2017-11-21 | 洪杰 | A kind of bridge construction equipment |
| CN107611701A (en) * | 2017-09-12 | 2018-01-19 | 洪杰 | A kind of new bridge construction equipment |
| CN107611721A (en) * | 2017-09-12 | 2018-01-19 | 韩建波 | A kind of children's protection against electric shock jack assemblies |
| CN107634362A (en) * | 2017-08-29 | 2018-01-26 | 维沃移动通信有限公司 | A kind of connector |
| CN107972225A (en) * | 2016-10-24 | 2018-05-01 | 上海飞乐汽车控制系统有限公司 | A kind of automobile sensor connector lug is molded auxiliary body |
| CN108233023A (en) * | 2017-09-12 | 2018-06-29 | 广州巨茗自控技术有限公司 | A kind of follow-on children's protection against electric shock jack assemblies |
| CN108233053A (en) * | 2017-09-12 | 2018-06-29 | 广州巨茗自控技术有限公司 | A kind of children protection against electric shock jack assemblies of novel |
| CN108232927A (en) * | 2017-09-12 | 2018-06-29 | 广州巨茗自控技术有限公司 | A kind of novel children's protection against electric shock jack assemblies |
| CN109346868A (en) * | 2018-10-19 | 2019-02-15 | 绵阳鹏志远科技有限公司 | A kind of application method of household Concealed socket and plug |
| CN111355089A (en) * | 2020-03-14 | 2020-06-30 | 马晓云 | Waterproof and anti-electric shock socket and plug |
| CN113241864A (en) * | 2021-05-25 | 2021-08-10 | 大福泵业有限公司 | Stator structure for efficient canned motor pump and canned motor pump |
| CN113314901A (en) * | 2021-07-29 | 2021-08-27 | 南通市通州区精华电器有限公司 | Anti-electric shock wiring board |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2064111U (en) * | 1989-07-24 | 1990-10-17 | 敖谦平 | Safety power source socket |
| CN2149028Y (en) * | 1993-01-07 | 1993-12-08 | 敖谦平 | Safety electric outlet |
-
1996
- 1996-07-15 CN CN96107072A patent/CN1074181C/en not_active Expired - Fee Related
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916935B (en) * | 2010-08-09 | 2012-04-18 | 杜红亮 | Safety receptacle |
| CN101916935A (en) * | 2010-08-09 | 2010-12-15 | 杜红亮 | Safety receptacle |
| CN102074833A (en) * | 2010-12-30 | 2011-05-25 | 重庆邮电大学 | Safety socket |
| CN102074833B (en) * | 2010-12-30 | 2013-01-23 | 重庆邮电大学 | Safety socket |
| CN105406245A (en) * | 2015-12-21 | 2016-03-16 | 宁波云飚电器科技有限公司 | Safety socket with cooling function |
| CN105977098B (en) * | 2016-06-29 | 2018-06-05 | 珠海格力电器股份有限公司 | Overtemperature protection system and electric appliance |
| CN105977098A (en) * | 2016-06-29 | 2016-09-28 | 珠海格力电器股份有限公司 | Overheat protection device and electric appliance |
| CN107972225B (en) * | 2016-10-24 | 2020-03-17 | 上海飞乐汽车控制系统有限公司 | Automobile sensor connector lug auxiliary mechanism that moulds plastics |
| CN107972225A (en) * | 2016-10-24 | 2018-05-01 | 上海飞乐汽车控制系统有限公司 | A kind of automobile sensor connector lug is molded auxiliary body |
| CN106785622A (en) * | 2016-11-28 | 2017-05-31 | 马建伟 | A kind of lever safety socket |
| CN106848698A (en) * | 2017-02-27 | 2017-06-13 | 广州雅隆自动化设备有限公司 | A kind of electric power safety socket device |
| CN107634362A (en) * | 2017-08-29 | 2018-01-26 | 维沃移动通信有限公司 | A kind of connector |
| CN108232927A (en) * | 2017-09-12 | 2018-06-29 | 广州巨茗自控技术有限公司 | A kind of novel children's protection against electric shock jack assemblies |
| CN107611721A (en) * | 2017-09-12 | 2018-01-19 | 韩建波 | A kind of children's protection against electric shock jack assemblies |
| CN108233023A (en) * | 2017-09-12 | 2018-06-29 | 广州巨茗自控技术有限公司 | A kind of follow-on children's protection against electric shock jack assemblies |
| CN108233053A (en) * | 2017-09-12 | 2018-06-29 | 广州巨茗自控技术有限公司 | A kind of children protection against electric shock jack assemblies of novel |
| CN107369987A (en) * | 2017-09-12 | 2017-11-21 | 洪杰 | A kind of bridge construction equipment |
| CN107611701A (en) * | 2017-09-12 | 2018-01-19 | 洪杰 | A kind of new bridge construction equipment |
| CN109346868A (en) * | 2018-10-19 | 2019-02-15 | 绵阳鹏志远科技有限公司 | A kind of application method of household Concealed socket and plug |
| CN109346868B (en) * | 2018-10-19 | 2020-06-02 | 绵阳鹏志远科技有限公司 | Application method of household hidden socket and plug |
| CN111355089A (en) * | 2020-03-14 | 2020-06-30 | 马晓云 | Waterproof and anti-electric shock socket and plug |
| CN113241864A (en) * | 2021-05-25 | 2021-08-10 | 大福泵业有限公司 | Stator structure for efficient canned motor pump and canned motor pump |
| CN113314901A (en) * | 2021-07-29 | 2021-08-27 | 南通市通州区精华电器有限公司 | Anti-electric shock wiring board |
| CN113314901B (en) * | 2021-07-29 | 2021-10-01 | 南通市通州区精华电器有限公司 | Anti-electric shock wiring board |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1074181C (en) | 2001-10-31 |
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