CN107221787B - Leakage protection indicating device, leakage protection plug and leakage protection socket - Google Patents
Leakage protection indicating device, leakage protection plug and leakage protection socket Download PDFInfo
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- CN107221787B CN107221787B CN201710599586.1A CN201710599586A CN107221787B CN 107221787 B CN107221787 B CN 107221787B CN 201710599586 A CN201710599586 A CN 201710599586A CN 107221787 B CN107221787 B CN 107221787B
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- 230000003068 static effect Effects 0.000 claims abstract description 13
- 238000000926 separation method Methods 0.000 claims abstract description 3
- 230000007704 transition Effects 0.000 claims description 27
- 230000009471 action Effects 0.000 claims description 14
- 238000001125 extrusion Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 5
- 238000003475 lamination Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 238000004080 punching Methods 0.000 claims description 2
- 238000005452 bending Methods 0.000 description 14
- 230000001154 acute effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/465—Identification means, e.g. labels, tags, markings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/713—Structural association with built-in electrical component with built-in switch the switch being a safety switch
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- Microelectronics & Electronic Packaging (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The invention discloses a leakage protection indicating device, a leakage protection plug and a leakage protection socket, which comprise a bracket, a movable frame and a driving device, wherein a fixed contact is arranged on the bracket, a movable contact is arranged on the movable frame, and the movable frame is connected with the bracket through an elastic connecting piece to swing; the driving device drives the movable frame to move so as to realize the attachment and separation of the movable contact and the stationary contact; wherein, also include the mechanical indication structure; the mechanical indication structure comprises an indication piece and a connecting piece, and the indication piece can rotate relative to the bracket; the surface of the indicating piece is provided with a first indicating mark and a second indicating mark, wherein one of the first indicating mark and the second indicating mark represents the state of the movable contact and the static contact, and the other represents the state of separating the movable contact and the static contact; one end of the connecting piece is connected with the movable frame, the other end of the connecting piece is in linkage with the indicating piece, the movable frame swings to drive the indicating piece to rotate, and the indicating piece is driven by the movable frame to rotate to a corresponding mark; the invention has stable structure, long service life and the like.
Description
Technical Field
The invention relates to a leakage protection indicating device, a leakage protection plug and a leakage protection socket.
Background
In order to prevent accidents caused by electric leakage, an electric leakage protection function is often added on a protection switch, and along with the progress of society, a socket with the electric leakage protection function is generated, however, the electric leakage protection device of the existing socket with the electric leakage protection function mostly indicates a corresponding state through an electronic control indicator lamp; the leakage protection function is realized mainly by a bracket, a circuit board, a reset button, a reset spring, a driving mechanism, a tripping coil and a movable frame; the support is provided with a fixed contact, the movable support is provided with a movable contact, and the movable contact and the fixed contact are in a separated state in a normal state; when the reset button is pressed, the driving structure pushes the movable frame to move so as to move, at the moment, the movable contact and the stationary contact are attached, and at the moment, the indicator lamp is in a lighting state; when electric leakage occurs, the circuit board receives an electric leakage signal to enable the tripping coil to be electrified, so that the ejector rod connected with the tripping coil moves to enable the movable frame to reset to separate the movable contact from the fixed contact, the power supply is cut off, and the indicator lamp is extinguished. By adopting electronic indication, due to uneven service life of electronic components and quality of welding of a circuit board, when electric leakage occurs, the indication lamp cannot accurately indicate, so that faults cannot be timely handled, and how to ensure long-term accurate indication of the indication lamp becomes a problem to be solved in the field.
Disclosure of Invention
The invention mainly solves the technical problem of providing the leakage protection device with stable structure and long service life.
The technical scheme adopted by the invention for solving the technical problems is as follows: the electric leakage protection indicating device comprises a bracket, a movable frame and a driving device, wherein a fixed contact is arranged on the bracket, a movable contact is arranged on the movable frame, and the movable frame is connected with the bracket through an elastic connecting piece to swing; the driving device drives the movable frame to move so as to realize the attachment and separation of the movable contact and the stationary contact; wherein, also include the mechanical indication structure; the mechanical indication structure comprises an indication piece and a connecting piece, and the indication piece can rotate relative to the bracket; the surface of the indicating piece is provided with a first indicating mark and a second indicating mark, wherein one of the first indicating mark and the second indicating mark represents the state of the movable contact and the static contact, and the other represents the state of separating the movable contact and the static contact; one end of the connecting piece is connected with the movable frame, the other end of the connecting piece is in linkage with the indicating piece, the movable frame swings to drive the indicating piece to rotate, and the indicating piece is driven by the movable frame to rotate to a corresponding mark.
By adopting the structure, when the movable contact and the stationary contact are in a joint state in normal operation, and when electric leakage occurs, the driving device can enable the movable frame to move so that the movable contact and the stationary contact are separated. Therefore, with the structure, when electric leakage occurs, the driving device can enable the movable frame to move, the movable frame moves to drive the connecting piece to enable the indicating piece to rotate, and a user observes the state of the indicating piece to judge the state of the socket. Compared with the prior art adopting electronic indication, the mechanical indication mechanism is more stable and has long service life. The common indication marks include color marks, text marks, english marks and the like, and a user can judge the state through the change of the marks, so that a more visual effect is achieved.
The driving device comprises a reset button and a circuit board; the circuit board is provided with a button seat, and the reset button part stretches into the button seat to be arranged in a sliding way; the upper part of the button seat is connected with a fixed seat, the fixed seat extends out from one side of the button seat, and the indicating piece is rotationally arranged on the fixed seat.
By adopting the design of the structure, the installation of the indicating piece is convenient.
The indicating piece comprises a rotating shaft part and an indicating part, the indicating part is a cylindrical body with a circular arc surface provided with a groove, the rotating shaft part is rotationally connected with the fixing seat, and one end of the connecting piece stretches into the groove to push the indicating piece to rotate; and the reset torsion spring is used for driving the indicating piece to reset.
The indicator with the structure always rotates by taking the rotating shaft part as the center in the rotating process. The arrangement of the groove is adopted, and under the action of the moving frame, the connecting piece is driven to rotate by the groove pushing the indicating piece; when the indicator loses the top force of the connector, the reset torsion spring can drive the indicator to return.
The fixing seat comprises two side arms which are arranged at intervals, mounting holes are formed in the side arms, and the rotating shaft part is matched with the mounting holes; the side arm is provided with a guide groove, the mounting hole is formed in the bottom of the guide groove, and one end of the guide groove, which is positioned on the side arm, is provided with an opening.
By adopting the structure, the rotating shaft part can extend into the guide groove, so that the rotating shaft part penetrates into the mounting hole for running fit.
The connecting piece comprises a mounting part and a jacking part for jacking the indicating piece; the upper end surface of the mounting part is provided with a clamping groove which is communicated with the front side surface of the mounting part, the left side wall and the right side wall of the clamping groove are provided with guide bulges, the guide bulges are provided with inclined planes I, and the inclined planes I are gradually increased from the notch of the clamping groove to the bottom of the groove; the clamping part is provided with an inclined plane II and a positioning groove, the inclined plane II is positioned near the bottom surface of the clamping part, and the positioning groove is positioned near the upper end surface of the clamping part and is used for being clamped with the guide protrusion; the inclined plane II is parallel to the inclined plane I, and when the guide structure is installed, the inclined plane II extrudes the inclined plane I to form a guide structure that the clamping part moves towards the bottom direction of the groove.
By adopting the structure, the installation part can extrude the inclined plane I to move continuously until the guide protrusion is clamped into the positioning groove when being installed, and the structure ensures that the connecting piece is very tightly clamped with the movable frame, thereby ensuring the overall stability.
The connecting piece comprises a mounting part and a jacking part for jacking the indicating piece; the clamping part is provided with a guiding limit groove and a hooking groove; the guide limit groove is formed by punching the upper end face of the clamping part and the front side face of the clamping part, and the two side walls of the guide limit groove are obliquely arranged so that the groove width of the guide limit groove at the opening of the front side face of the clamping part is the smallest; the hooking groove is arranged on the lower end surface of the clamping part; a guide lug is arranged on one side surface of the mounting part, and the shape of the guide lug is matched with the shape of the guide limit groove; the bottom surface of the installation part is provided with a clamping hook which is used for being clamped with the hooking groove.
When the structure is installed, the guide lug is aligned with the bayonet of the guide limit groove positioned on the upper end face of the clamping part, then the guide lug is pressed into the guide lug, the guide lug stretches into the guide limit groove, the guide lug plays a role in clamping (because the groove width of the guide limit groove positioned at the opening of the front side face of the clamping part is minimum, the guide lug is prevented from being moved out of the bayonet at the front part of the guide limit groove), the guide effect can be played, and when the guide lug moves to the tail end position, the clamping hook is clamped with the hooking groove, so that the fixing of the connecting piece and the movable frame is realized.
The driving device further comprises a reset spring, a spring piece, a coil and a push rod, wherein the reset spring, the spring piece, the coil and the push rod are used for resetting the reset button; a transition through hole is formed in the movable frame, one end of the elastic sheet is fixed with the reset button, and the other end of the elastic sheet penetrates through the transition through hole; the ejector rod is arranged in the coil, and part of the ejector rod exceeds the coil and is positioned beside the elastic sheet; the elastic sheet is provided with a clamping part, a hooking part is arranged on one side wall of the transition through hole, and the clamping part is positioned above the hooking part; when the movable frame is in the initial position, the side walls of the transition through holes provided with the clamping parts and the hooking parts are provided with extrusion force, the elastic pieces are driven by the buttons to move downwards to enable the clamping parts to be clamped with the hooking parts, the movable frame is driven to move towards the position where the fixed contacts are located, and the movable contacts and the fixed contacts are attached; when electric leakage occurs, the driving module drives the coil to be electrified so as to enable the ejector rod to be ejected, the clamping relation between the clamping part and the hooking part is released, and the movable frame is reset under the action of the elastic connecting piece so as to separate the movable contact from the static contact.
The structure of the circuit board is a known technology, and the circuit board is not repeated herein, and the main realization function of the circuit board is to detect the leakage signal, then electrify the coil, and when the leakage signal does not exist, the coil is in a power-off state; such a structure is also called a passive structure. Because the clamping part of the spring plate and the side wall of the transition through hole (the side wall is provided with the hooking part) have extrusion force at the initial position, the clamping part of the reset button can be clamped with the hooking part by pressing the reset button, the reset button is loosened at the moment, and the movable frame can be pulled under the acting force of the reset spring to enable the movable contact and the static contact to be attached. When electric leakage occurs, the coil is electrified, the ejector rod ejects the movable elastic sheet, so that the clamping state of the clamping part and the hooking part is released, the elastic sheet moves upwards under the action of the reset spring, and meanwhile, the movable contact and the static contact are separated under the action of the elastic connecting piece. The structure has the characteristics of stable triggering, simple transmission structure, quick response and the like.
The driving device further comprises a reset spring, a spring piece, a coil and a push rod, wherein the reset spring, the spring piece, the coil and the push rod are used for resetting the reset button; the ejector rod is arranged in the coil, and the ejector rod part extends out of the coil to the lower part of the movable frame; the movable frame is provided with a transition through hole, and the exceeding part of the ejector rod is provided with a through hole; one end of the elastic sheet is fixed with the reset button, and the other end of the elastic sheet passes through the transition through hole and the through hole; the elastic sheet is provided with a clamping part, a hooking part is arranged on one side wall of the transition through hole, and the clamping part is positioned above the hooking part; when the circuit board is in the initial position, the circuit board control coil is electrified, the ejector rod contracts and pulls the elastic sheet, so that extrusion force is generated between the clamping part and the side wall of the transition through hole provided with the hooking part, and at the moment, the reset button is pressed to enable the movable frame to move so as to realize the lamination of the movable contact and the fixed contact; when electric leakage occurs, the driving module drives the coil to be powered off, so that the ejector rod loses magnetic field force, and the movable frame resets under the action of the elastic connecting piece, so that the movable contact and the static contact are separated.
The structure of the circuit board is a known technology, and the circuit board is not repeated herein, and mainly realizes the functions of detecting the leakage signal, then powering off the coil, and when the leakage signal does not exist, the coil is in an electrified state; this structure is also called active structure. Because the ejector rod stretches out and draws back for the block portion of shell fragment and transition through-hole lateral wall (this lateral wall is equipped with and colludes the portion) have the extrusion force when initial position, consequently press reset button block portion can with collude the portion looks card, loosen reset button this moment, can pull the movable frame under reset spring's effort and make the laminating of moving, stationary contact. When electric leakage occurs, the coil is powered off, the ejector rod loses magnetic force, the ejector rod is in a loose state, the clamping state of the clamping part and the hooking part is released, the elastic sheet moves upwards under the action of the reset spring, and meanwhile, the movable contact and the static contact are separated under the action of the elastic connecting piece. The structure also has the characteristics of stable triggering, simple transmission structure, quick response and the like.
The utility model provides a leakage protection socket, its includes socket casing, wherein, has offered the perspective hole on the socket casing, is equipped with foretell leakage protection indicating device in the socket casing, and the indicator is located the perspective hole below.
The leakage protection socket adopting the structure has the mechanical indication function and has the characteristics of more stable and visual indication and long service life.
The leakage protection plug comprises a plug shell, wherein a perspective hole is formed in the plug shell, the leakage protection indicating device is arranged in the plug shell, and an indicating piece is located below the perspective hole.
The leakage protection plug adopting the structure has the mechanical indication function and has the characteristics of more stable and visual indication and long service life.
Drawings
FIG. 1 is a perspective view of embodiment 1 of the present invention;
FIG. 2 is a side view of embodiment 1 of the present invention;
fig. 3 is a sectional view of the movable contact point of embodiment 1 of the present invention when attached;
fig. 4 is a sectional view of the embodiment 1 of the present invention with the movable and stationary contacts separated;
FIG. 5 is a structural view of a mechanical indexing structure in embodiment 1 of the present invention;
FIG. 6 is a diagram showing the cooperation between the movable frame and the connecting member in embodiment 1 of the present invention;
FIG. 7 is a partial cross-sectional view of the mobile frame and the connecting member of embodiment 1 of the present invention;
fig. 8 is a perspective view of embodiment 2 of the present invention;
FIG. 9 is a side view of embodiment 2 of the present invention;
fig. 10 is a cross-sectional view of the movable and stationary contacts of embodiment 2 of the present invention when they are attached;
fig. 11 is a sectional view of embodiment 2 of the present invention with the movable and stationary contacts separated;
FIG. 12 is a structural view of a mechanical indexing structure in embodiment 2 of the present invention;
FIG. 13 is a diagram showing the relationship between the movable frame and the connecting member in example 2 of the present invention;
FIG. 14 is a partial cross-sectional view of the mobile frame and the connecting member in embodiment 2 of the present invention;
FIG. 15 is a block diagram of embodiment 3 of the present invention;
fig. 16 is a structural diagram of embodiment 4 of the present invention.
Detailed Description
Example 1:
referring to fig. 1 to 7, an earth leakage protection indicating device comprises a bracket 5, a movable frame 6 and a driving device. The driving device comprises a circuit board 1, a reset button 2, an elastic sheet 3, a reset spring 4, an elastic connecting piece 7, a fixed seat 22 and an electromagnetic tripping system.
The support 5 is fixed on the back of the circuit board 1, and the support 5 is provided with a stationary contact, the structure of which is not shown in the embodiment, but the region b of the stationary contact is marked in fig. 1. The movable frame 6 is positioned on the right side of the bracket 5, and two ends of the movable frame 6 are connected with the bracket 5 through elastic connecting pieces 7, so that the movable frame 6 is arranged in a swinging way. The movable frame 6 is provided with a movable contact 8, the movable contact 8 corresponds to the fixed contact, when the movable frame 6 swings towards the circuit board 1, the fixed contact and the movable contact 8 touch to realize circuit conduction, and when the movable frame 6 swings away from the circuit board 1, the fixed contact and the movable contact 8 are separated. The specific connection structure of the movable frame 6 and the bracket 5 is as follows: the movable frame 6 comprises a clamping part 9 and a straight part 10, the clamping part 9 is connected with the middle part of the straight part 10 and exceeds the straight part 10, and a transition through hole 11 is formed in the clamping part 9.
The reset button 2 is located the front top of circuit board 1, is equipped with button seat 21 on the reset button 2, is equipped with four lugs on the button seat 21, corresponds on the circuit board to be equipped with four through-holes, and the lug cooperates with the through-hole to realize reset button 2 and fixes on circuit board 1 to be equipped with reset spring 4 between reset button 2 and the circuit board 1. One end of the elastic sheet 3 is fixed with the reset button 2, and one end of the elastic sheet 3 penetrates through the circuit board 1 to extend to the lower side of the circuit board 1, and the structure enables the reset button 2 to slide relative to the circuit board 1 when being pressed. The reset spring 4 is arranged to reset when the reset button 2 loses force.
The fixing seat 22 is sleeved on the button seat 21 and is fixed on the circuit board 1, the fixing seat 22 is provided with two side arms extending from one side surface of the button seat 21, the two side arms are provided with guide grooves 221, the guide grooves 221 are provided with mounting holes 222, the mounting holes 222 are specifically positioned at the bottom ends of the guide grooves 221, and the bottom ends are positions of the guide grooves 221 close to the bottom of the fixing seat 22.
The mechanical indication mechanism 23 comprises a connecting piece 231 and an indication piece 232, the connecting piece 231 and the indication piece 232 are in linkage, a groove 236 is formed in the indication piece 232 in linkage, the top end of the connecting piece 231 abuts against the groove wall of the groove 236, and the indication piece 232 can be jacked. The connecting piece 231 comprises a mounting part 2310 and a top moving part 2312 for pushing the indicating piece, wherein a clamping groove 2311 for opening the front side surface of the mounting part is formed in the upper end surface of the mounting part 2310, guide protrusions 2313 are arranged on the left side wall and the right side wall of the clamping groove 2311, an inclined plane I2314 is arranged on the guide protrusions 2313, and the inclined plane I2314 is gradually increased from the notch of the clamping groove 2311 to the bottom of the groove; the clamping part 9 is provided with an inclined plane II 2315 and a positioning groove 2316, the inclined plane II 2315 is positioned near the bottom surface of the clamping part 9, and the positioning groove 2316 is positioned near the upper end surface of the clamping part 9 and is used for being clamped with the guide protrusion 2313; the inclined plane II 2315 is parallel to the inclined plane I2314, the inclined plane II 2315 is located right below the positioning groove 2316, and during installation, the inclined plane II 2315 extrudes the inclined plane I2314 to form a guide structure that the clamping portion moves towards the groove bottom direction, and finally the guide protrusion 2313 falls into the positioning groove 2316 to be clamped with the positioning groove 2316 along with gradual stretching of the clamping portion 9.
The connecting piece 231 is connected with the movable frame 6 and swings with the movable frame 6, the indicating piece 232 comprises an indicating part 238 and a rotating shaft part 234, and the indicating part 238 is matched with the mounting hole 222 of the fixed seat through the rotating shaft part 234, so that the indicating piece 234 rotates relative to the fixed seat 22. The indicator 238 is here sector-shaped in cross-section and is formed by a recess 236 in the circular arc surface of a cylinder. The indication part 238 is provided with a first indication mark and a second indication mark, and the indication part 238 is rotated to realize the indication switching.
Further, a reset torsion spring 235 is sleeved on the rotating shaft portion 234, one end of the reset torsion spring 235 is connected with the side wall of the fixed seat 22, and the other end of the reset torsion spring 235 is connected with the indicating piece 232, so that the reset effect of the reset torsion spring 235 is achieved.
The elastic connector 7 adopts a sheet-like structure, which includes a fixing portion 12, a bending portion 13, and a mounting portion 14, the fixing portion 12 and the mounting portion 14 being connected by the bending portion 13. The fixing portion 12 is adapted to be connected to the bracket 5, where it can be fixed to the bracket 5 by riveting. The bending direction of the bending portion 13 is a direction away from the circuit board 1, the bending portion 13 is arc-shaped, and the bending portion 13 is adjacent to the fixing portion 12. The mounting part 14 has a U-shaped structure, and two ends of the straight part 10 extend into the hollow parts of the mounting parts 14 of the two elastic connecting pieces 7 to be fixed. With this structure, an acute angle a is formed between the upper end surface of the fixing portion 12 and the upper end surface of the mounting portion 14, the acute angle a is not greater than 30 °, and the acute angle a is typically 10 ° -20 °.
The electromagnetic tripping system is fixed on the bracket 5 and comprises a push rod 15 and a coil 16 sleeved outside the push rod 15, part of the push rod 15 extends out of the coil 16 from the right of the bracket 5, and the extending part of the push rod 15 is positioned below the movable frame 6 and beside the push rod 15. The elastic sheet 3 is provided with an engaging portion 18, the engaging portion 18 is a hook portion, the engaging portion 18 is formed by bending part of the elastic sheet 3, and the direction of the engaging portion 18 is opposite to the extending direction of the ejector rod 15. The hooking portion 19 is disposed on the hole wall of the transition through hole 11, and is achieved by forming a notch 20 on the rear side wall of the transition through hole 11, where the rear side wall is a side wall close to the position where the electromagnetic release is located. In the initial state, the clamping part 18 is located above the hooking part 19, and there is extrusion force between the clamping part 18 and the rear side wall of the transition through hole 11, because the coil 16 is in the outage state at this time, the ejector rod 15 is not affected by the magnetic field force, at this time, the reset button 2 is pressed, the shrapnel 3 moves downwards, the clamping part 18 is clamped with the hooking part 19, then the external force on the reset button 2 is removed, under the action of the reset spring 4, the movable frame 6 moves upwards to enable the movable contact to be in close connection with the fixed contact 8, the connecting piece 231 is driven to move due to the swinging of the movable frame 6, the connecting piece 231 is linked to rotate by the indicating piece 232, the reset torsion spring 235 deforms, the first indication mark at this time is just located below the perspective hole, and the user can observe the first indication mark to confirm that the socket is in the power-on state according to the perspective hole. When the circuit board 1 detects electric leakage, the circuit board 1 enables the coil 16 to be electrified, the ejector rod is subjected to the action of magnetic field force to eject the coil 16, the elastic sheet 3 is pushed to enable the clamping state of the clamping part 18 and the hooking part 19 to be released, the reset spring 4 is completely restored to deform to enable the reset button 2 to reset, meanwhile, the elastic connecting piece 7 is restored to deform to enable the movable frame 6 to reset, the movable frame 6 swings to drive the connecting piece 231 to move, the connecting piece 231 is linked with the indicating piece 232 to rotate, the elastic force of the reset torsion spring 235 is released at the moment, the movable frame 6 is enabled to reset fast together with the reset spring 4, at the moment, the movable contact is separated from the fixed contact 8, and at the same time, the second indicating mark rotates to the position right below the transparent hole, and a user can identify that the socket is in a power-off state according to the second indicating mark.
The structure of the circuit board 1 is a well-known technology, and the main function of the circuit board is to detect the leakage signal through the leakage detection module, when the leakage signal is detected, the coil is driven to be electrified through the driving module, and when the leakage signal is not present, the coil is in a power-off state, and the structure is also called a passive structure.
The first indication mark and the second indication mark are both arranged on the arc surface of the indication piece 232, and the first indication mark and the second indication mark can be color marks, text marks or English letters marks.
Example 2:
referring to fig. 8 to 14, an earth leakage protection indicating device comprises a bracket 5, a movable frame 6 and a driving device. The driving device comprises a circuit board 1, a reset button 2, an elastic sheet 3, a reset spring 4, an elastic connecting piece 7, a fixed seat 22 and an electromagnetic tripping system.
The support 5 is fixed on the back of the circuit board 1, and the support 5 is provided with a stationary contact, the structure of which is not shown in the embodiment, but the region b of the stationary contact is marked in fig. 1. The movable frame 6 is positioned on the right side of the bracket 5, and two ends of the movable frame 6 are connected with the bracket 5 through elastic connecting pieces 7, so that the movable frame 6 is arranged in a swinging way. The movable contact 8 is arranged on the movable frame 6, the movable contact 8 corresponds to the fixed contact, when the movable frame 6 swings towards the circuit board 1, the movable contact 8 and the fixed contact touch to realize circuit conduction, and when the movable frame 6 swings away from the circuit board 1, the movable contact 8 and the fixed contact are separated. The specific connection structure of the movable frame 6 and the bracket 5 is as follows: the movable frame 6 comprises a clamping part 9 and a straight part 10, the clamping part 9 is connected with the middle part of the straight part 10 and exceeds the straight part 10, and a transition through hole 11 is formed in the clamping part 9.
The reset button 2 is located the front top of circuit board 1, is equipped with button seat 21 on the reset button 2, is equipped with four lugs on the button seat 21, corresponds on the circuit board to be equipped with four through-holes, and the lug cooperates with the through-hole to realize reset button 2 and fixes on circuit board 1 to be equipped with reset spring 4 between reset button 2 and the circuit board 1. One end of the elastic sheet 3 is fixed with the reset button 2, and one end of the elastic sheet 3 penetrates through the circuit board 1 to extend to the lower side of the circuit board 1, and the structure enables the reset button 2 to slide relative to the circuit board 1 when being pressed. The reset spring 4 is arranged to reset when the reset button 2 loses force.
The fixing seat 22 is sleeved on the button seat 21 and is fixed on the circuit board 1, the fixing seat 22 is provided with two side arms extending from one side surface of the button seat 21, the two side arms are provided with guide grooves 221, the guide grooves 221 are provided with mounting holes 222, the mounting holes 222 are specifically positioned at the bottom ends of the guide grooves 221, and the bottom ends are positions of the guide grooves 221 close to the bottom of the fixing seat 22.
The mechanical indication mechanism 23 includes a connecting member 231 and an indication member 232, where the connecting member 231 and the indication member 232 are in linkage, and the linkage may be that a groove 236 is provided on the indication member 232, and the top end of the connecting member 231 abuts against the groove wall of the groove 236, so that the indication member 232 can be pushed, thereby forming the linkage. The connection member 231 includes a mounting portion 2310 and a top movement portion 2312 for the top movement indicator 232; the clamping part 9 is provided with a guiding limit groove 2317 and a hooking groove 2318; the upper end face of the clamping part 9 and the front side face of the clamping part 9 are opened by the guide limit groove 2317, two side walls of the guide limit groove 2317 are obliquely arranged so that the groove width of the guide limit groove 2317 at the opening of the front side face of the clamping part 9 is minimum, and the cross section of the guide limit groove 2317 is trapezoidal; the hooking groove 2318 is arranged on the lower end surface of the clamping part 9; a guide protruding block 2319 is arranged on one side surface of the mounting part 2310, and the shape of the guide protruding block 2319 is matched with that of the guide limit groove 2317; the bottom surface of the mounting portion 2310 is provided with a hook 2320 for engaging with the hooking groove 2317.
Further, a reset torsion spring 235 is sleeved on the rotating shaft portion 234, one end of the reset torsion spring 235 is connected with the side wall of the fixed seat 22, and the other end of the reset torsion spring 235 is connected with the indicating piece 232, so that the reset effect of the reset torsion spring 235 is achieved.
The elastic connector 7 adopts a sheet-like structure, which includes a fixing portion 12, a bending portion 13, and a mounting portion 14, the fixing portion 12 and the mounting portion 14 being connected by the bending portion 13. The fixing portion 12 is adapted to be connected to the bracket 5, where it can be fixed to the bracket 5 by riveting. The bending direction of the bending portion 13 is a direction away from the circuit board 1, the bending portion 13 is arc-shaped, and the bending portion 13 is adjacent to the fixing portion 12. The mounting part 14 has a U-shaped structure, and two ends of the straight part 10 extend into the hollow parts of the mounting parts 14 of the two elastic connecting pieces 7 to be fixed. With this structure, an acute angle a is formed between the upper end surface of the fixing portion 12 and the upper end surface of the mounting portion 14, the acute angle a is not greater than 30 °, and the acute angle a is typically 10 ° -20 °.
The electromagnetic tripping system is fixed on the bracket 5 and comprises a push rod 15 and a coil 16 sleeved outside the push rod 15, part of the push rod 15 extends out of the coil 16 from the right of the bracket 5, and the extending part of the push rod 15 is positioned below the movable frame 6. The part of the ejector rod 15 extending out is provided with a through hole 17, the other end of the elastic sheet 3 sequentially passes through the circuit board 1, the transition through hole 11 and the through hole 17, and the radius R of the through hole 17 is larger than the thickness d of the elastic sheet 3. The elastic sheet 3 is provided with an engaging portion 18, the engaging portion 18 is a hook portion, the engaging portion 18 is formed by bending part of the elastic sheet 3, and the direction of the engaging portion 18 is the retracting direction of the ejector rod 15. The hooking portion 19 is disposed on the hole wall of the transition through hole 11, and is achieved by forming a notch 20 on the rear side wall of the transition through hole 11, where the rear side wall is a side wall close to the position where the electromagnetic release is located. In the initial state, the engaging portion 18 is located above the hooking portion 19; because the coil 16 is in an electrified state, the ejector rod 15 is retracted under the action of a magnetic field, and the elastic sheet 3 is pulled to be extruded and deformed towards the direction of the electromagnetic release (because the clamping part 18 of the elastic sheet 3 extrudes the rear side wall of the transition through hole 11); at this time, the reset button 2 is pressed, so that the elastic sheet 3 moves downwards, the clamping part 18 and the hooking part 19 are clamped, then the external force on the reset button 2 is removed, under the action of the reset spring 4, the movable frame 6 moves upwards to enable the movable contact to be in contact with the fixed contact 8, the connecting piece 231 is driven to move due to the swinging of the movable frame 6, the connecting piece 231 is linked with the indicating piece 232 to rotate, the reset torsion spring 235 deforms, the first indication mark at this moment is just positioned below the transparent hole 101, the first indication mark can be observed, and the socket is determined to be in an electrified state at this moment. When the circuit board 1 detects electric leakage, the circuit board 1 enables the coil 16 to be powered off, the ejector rod 15 loses the magnetic field force and can eject the coil 16, the elastic sheet 3 is pushed to enable the clamping state of the clamping part 18 and the hooking part 19 to be released, the reset spring 4 is completely restored to deform at the moment to enable the reset button 2 to reset, meanwhile, the elastic connecting piece 7 is restored to deform to enable the movable frame 6 to reset, the movable frame 6 swings to drive the connecting piece 231 to move, the indicating piece 232 resets under the action of the reset torsion spring 235, the second indicating mark is located right below the perspective hole 101, and a user can identify that the socket is in the power-off state through the second indicating mark.
The structure of the circuit board 1 is a known technology, and the main implementation function is to detect the leakage signal through the leakage detection module, drive the coil to be powered off through the driving module when the leakage signal is detected, and the coil is in a powered-on state when the leakage signal is not present.
The first indication mark and the second indication mark are both arranged on the arc surface of the indication piece 232, and the first indication mark and the second indication mark can be color marks, text marks or English letters marks.
Example 3:
as shown in fig. 15, a leakage protection socket includes a socket housing 100, a leakage protection indicating device in embodiment 2 is disposed in the socket housing 100, a perspective hole 101 is formed in the socket housing 100, the perspective hole 101 is located right above the indicator 232, and a user can determine a state of the socket through the indicator 232. The socket housing 100 is further provided with a main switch 103, and the main switch 103 is used for controlling the earth leakage protection socket.
Example 4:
as shown in fig. 16, a leakage protection plug includes a plug housing 104, a leakage protection indicating device in embodiment 2 is disposed in the plug housing 104, a perspective hole 101 is formed in the plug housing 104, the perspective hole 101 is located right above an indicator 232, and a user can determine a state of the plug through the indicator 232.
Claims (10)
1. The electric leakage protection indicating device comprises a bracket, a movable frame and a driving device, wherein a fixed contact is arranged on the bracket, a movable contact is arranged on the movable frame, and the movable frame is connected with the bracket through an elastic connecting piece to swing; the driving device drives the movable frame to move so as to realize the attachment and separation of the movable contact and the stationary contact; the method is characterized in that: also comprises a mechanical indication structure; the mechanical indication structure comprises an indication piece and a connecting piece, and the indication piece can rotate relative to the bracket; the surface of the indicating piece is provided with a first indicating mark and a second indicating mark, wherein one of the first indicating mark and the second indicating mark represents the state of the movable contact and the static contact, and the other represents the state of separating the movable contact and the static contact; one end of the connecting piece is connected with the movable frame, the other end of the connecting piece is in linkage with the indicating piece, the movable frame swings to drive the indicating piece to rotate, and the indicating piece is driven by the movable frame to rotate to a corresponding mark; the movable frame comprises a straight part and a clamping part connected with the middle position of the straight part, and the connecting piece comprises a mounting part and a top moving part for pushing the indicating piece.
2. A leakage protection and indication device as defined in claim 1, wherein: the driving device comprises a reset button and a circuit board; the circuit board is provided with a button seat, and the reset button part stretches into the button seat to be arranged in a sliding way; the upper part of the button seat is connected with a fixed seat, the fixed seat extends out from one side of the button seat, and the indicating piece is rotationally arranged on the fixed seat.
3. A leakage protection and indication device as defined in claim 2, wherein: the indicating piece comprises a rotating shaft part and an indicating part, the indicating part is a cylindrical body with a circular arc surface provided with a groove, the rotating shaft part is rotationally connected with the fixed seat, and one end of the connecting piece stretches into the groove to push the indicating piece to rotate; and the reset torsion spring is used for driving the indicating piece to reset.
4. A leakage protection and indication device as defined in claim 3, wherein: the fixing seat comprises two side arms which are arranged at intervals, mounting holes are formed in the side arms, and the rotating shaft part is matched with the mounting holes; the side arm is provided with a guide groove, the mounting hole is formed in the bottom of the guide groove, and one end of the guide groove, which is positioned on the side arm, is provided with an opening.
5. A leakage protection indicating device according to claim 1 or 2 or 3 or 4, wherein: the upper end surface of the mounting part is provided with a clamping groove which is communicated with the front side surface of the mounting part, the left side wall and the right side wall of the clamping groove are provided with guide bulges, the guide bulges are provided with inclined planes I, and the inclined planes I are gradually increased from the notch of the clamping groove to the bottom of the groove; the clamping part is provided with an inclined plane II and a positioning groove, the inclined plane II is positioned near the bottom surface of the clamping part, and the positioning groove is positioned near the upper end surface of the clamping part and is used for being clamped with the guide protrusion; the inclined plane II is parallel to the inclined plane I, and when the guide structure is installed, the inclined plane II extrudes the inclined plane I to form a guide structure that the clamping part moves towards the bottom direction of the groove.
6. A leakage protection indicating device according to claim 1 or 2 or 3 or 4, wherein: the clamping part is provided with a guiding limit groove and a hooking groove; the guide limit groove is formed by punching the upper end face of the clamping part and the front side face of the clamping part, and the two side walls of the guide limit groove are obliquely arranged so that the groove width of the guide limit groove at the opening of the front side face of the clamping part is the smallest; the hooking groove is arranged on the lower end surface of the clamping part; a guide lug is arranged on one side surface of the mounting part, and the shape of the guide lug is matched with the shape of the guide limit groove; the bottom surface of the installation part is provided with a clamping hook which is used for being clamped with the hooking groove.
7. A leakage protection and indication device as defined in claim 5, wherein: the driving device also comprises a reset spring, a spring piece, a coil and a push rod for resetting the reset button; a transition through hole is formed in the movable frame, one end of the elastic sheet is fixed with the reset button, and the other end of the elastic sheet penetrates through the transition through hole; the ejector rod is arranged in the coil, and part of the ejector rod exceeds the coil and is positioned beside the elastic sheet; the elastic sheet is provided with a clamping part, a hooking part is arranged on one side wall of the transition through hole, and the clamping part is positioned above the hooking part; when the movable frame is in the initial position, the side walls of the transition through holes provided with the clamping parts and the hooking parts are provided with extrusion force, the elastic pieces are driven by the buttons to move downwards to enable the clamping parts to be clamped with the hooking parts, the movable frame is driven to move towards the position where the fixed contacts are located, and the movable contacts and the fixed contacts are attached; when electric leakage occurs, the driving module drives the coil to be electrified so as to enable the ejector rod to be ejected, the clamping relation between the clamping part and the hooking part is released, and the movable frame is reset under the action of the elastic connecting piece so as to separate the movable contact from the static contact.
8. The leakage protection indicator device of claim 6, wherein: the driving device also comprises a reset spring, a spring piece, a coil and a push rod for resetting the reset button; the ejector rod is arranged in the coil, and the ejector rod part extends out of the coil to the lower part of the movable frame; the movable frame is provided with a transition through hole, and the exceeding part of the ejector rod is provided with a through hole; one end of the elastic sheet is fixed with the reset button, and the other end of the elastic sheet passes through the transition through hole and the through hole; the elastic sheet is provided with a clamping part, a hooking part is arranged on one side wall of the transition through hole, and the clamping part is positioned above the hooking part; when the circuit board is in the initial position, the circuit board control coil is electrified, the ejector rod contracts and pulls the elastic sheet, so that extrusion force is generated between the clamping part and the side wall of the transition through hole provided with the hooking part, and at the moment, the reset button is pressed to enable the movable frame to move so as to realize the lamination of the movable contact and the fixed contact; when electric leakage occurs, the driving module drives the coil to be powered off, so that the ejector rod loses magnetic field force, and the movable frame resets under the action of the elastic connecting piece, so that the movable contact and the static contact are separated.
9. An earth leakage protection socket, which includes a socket housing, characterized in that: a perspective hole is formed in the socket shell, the leakage protection indicating device according to any one of claims 1-8 is arranged in the socket shell, and the indicating piece is located below the perspective hole.
10. An earth leakage protection plug, which comprises a plug housing, characterized in that: a perspective hole is formed in the plug housing, the leakage protection indicating device according to any one of claims 1-8 is arranged in the plug housing, and the indicating piece is located below the perspective hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710599586.1A CN107221787B (en) | 2017-07-21 | 2017-07-21 | Leakage protection indicating device, leakage protection plug and leakage protection socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710599586.1A CN107221787B (en) | 2017-07-21 | 2017-07-21 | Leakage protection indicating device, leakage protection plug and leakage protection socket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107221787A CN107221787A (en) | 2017-09-29 |
| CN107221787B true CN107221787B (en) | 2023-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710599586.1A Active CN107221787B (en) | 2017-07-21 | 2017-07-21 | Leakage protection indicating device, leakage protection plug and leakage protection socket |
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| Country | Link |
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| CN (1) | CN107221787B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108232490B (en) * | 2017-12-20 | 2024-05-17 | 上海友邦电气(集团)股份有限公司 | Spring plate fixing piece |
| CN109066581B (en) * | 2018-07-27 | 2024-05-24 | 东莞市拓诚实业有限公司 | A leakage protector |
| CN111524761A (en) * | 2020-06-12 | 2020-08-11 | 浙江夏兴电子科技股份有限公司 | Leakage protection switch |
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| CN206893870U (en) * | 2017-07-21 | 2018-01-16 | 温州和赢电气科技有限公司 | A kind of earth leakage protective instruction device, leakage protecting plug and earth leakage protective socket |
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| JP2003141981A (en) * | 2001-11-07 | 2003-05-16 | Fuji Electric Co Ltd | Earth leakage protection plug |
| CN101136548A (en) * | 2006-09-01 | 2008-03-05 | 黄华道 | Creepage protecting socket |
| CN101399131A (en) * | 2008-11-14 | 2009-04-01 | 青田奥来电器有限公司 | Isolation switch |
| CN203325813U (en) * | 2013-07-15 | 2013-12-04 | 长城电器集团有限公司 | Contact separating and combination indicating device for electric leakage reclosing breaker |
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| CN107221787A (en) | 2017-09-29 |
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