CN114447683A - Push-pull plug with double-layer protection device - Google Patents
Push-pull plug with double-layer protection device Download PDFInfo
- Publication number
- CN114447683A CN114447683A CN202210058767.4A CN202210058767A CN114447683A CN 114447683 A CN114447683 A CN 114447683A CN 202210058767 A CN202210058767 A CN 202210058767A CN 114447683 A CN114447683 A CN 114447683A
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- plug
- shell
- protection
- push
- socket
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- 230000001681 protective effect Effects 0.000 claims description 18
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims 12
- 239000002355 dual-layer Substances 0.000 claims 7
- 239000000428 dust Substances 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000003780 insertion Methods 0.000 description 7
- 230000037431 insertion Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 4
- 230000001012 protector Effects 0.000 description 4
- 210000005069 ears Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Classifications
-
- 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
- H01R13/502—Bases; Cases composed of different pieces
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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
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/5202—Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
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- Connector Housings Or Holding Contact Members (AREA)
Abstract
A push-pull plug with double-layer protection device comprises an inner protection plug positioned in an inner cavity of an outer protection shell, wherein one side of the inner protection plug is provided with a plug insert, the plug insert is provided with a pin through hole for accommodating a pin, one end of the outer protection shell is provided with a shell protection device, the shell protection device can be pushed by the socket to be opened and automatically reset to seal the inner cavity of the outer protection shell when the push-pull plug is withdrawn from the socket, the end part of the plug insert is provided with the plug protection device, the plug protection device can be pushed by the socket to move from a closed position for sealing a pin through hole port to an open position for exposing the pin through hole port, and automatically reset to the closed position when the push-pull plug is withdrawn from the socket, so that the pin can not be exposed in the whole working process of inserting and withdrawing the plug, and the condition that dust adheres to the surface of the pin to influence the light transmission performance when the pin is exposed can be avoided, the dustproof performance of the push-pull plug is greatly improved.
Description
Technical Field
The invention relates to the field of communication equipment plug devices, in particular to a push-pull plug with a double-layer protection device.
Background
With the continuous development of the 5G technology, the requirement on the stability of the optical transmission performance of communication equipment is continuously improved, the dustproof problem is more and more prominent, and the current communication transmission is widely applied to connectors such as FC, LC, SC, MPO and the like and derived single-core and double-core products of the same type. These current connectors can be established the dust cap on the plug and prevent dust, need earlier pull out the dust cap from the plug when using, just then can carry out the plug operation of connector. Therefore, after the dust cap is pulled out, the surface of the ferrule is still exposed, so that dust in the environment inevitably adheres to the end face of the ferrule, and the light transmission performance of the product is affected.
Disclosure of Invention
The invention aims to provide a push-pull plug with a double-layer protection device, which improves the dustproof performance.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a plug-type plug with double-deck protection device, including the interior protection plug that is located outer protective housing inner chamber, one side of interior protection plug is equipped with plug insert, set up the contact pin through-hole that holds the contact pin on the plug insert, the one end of outer protective housing is equipped with casing protection device, casing protection device can be promoted and opened by the socket, and automatic re-setting is in order to seal the inner chamber of outer protective housing when plug-type plug withdraws from the socket, plug insert's tip is equipped with plug protection device, plug protection device can be promoted by the socket and moves to making the exposed open position of contact pin through-hole port from the closed position that seals contact pin through-hole port, and automatic re-setting to closed position when plug-type plug withdraws from the socket.
Preferably, outer protection casing includes upper protection casing and lower floor's protection casing, and interior protection plug still includes locking device and unblock slide, and locking device rotates and sets up on plug insert, and the inboard push-and-pull boss of upper protection casing stretches into the push-and-pull boss jack of unblock slide, and when plug-type plug got into the socket in, locking device can rotate to the locking position with the socket lock automatically, when plug-type plug withdrawed from in the socket, the push-and-pull boss can stimulate the unblock slide to drive locking device rotatory to the unblock position with the socket separation from the locking position.
Preferably, the outer protection shell comprises an upper protection shell and a lower protection shell, a shell protection device is respectively arranged on one side, close to the plug protection device, of each of the upper protection shell and the lower protection shell, the shell protection device comprises a baffle plate, the baffle plate is arranged on a pin shaft in a penetrating mode, a torsional spring capable of driving the baffle plate to rotate is arranged on the pin shaft, the baffle plate is kept in a natural closed state through the elastic force of the torsional spring, and therefore the baffle plates of the upper protection shell and the lower protection shell are matched to seal an inner cavity of the outer protection shell; when the push-pull plug is withdrawn from the socket, the baffle plate rotates from the opening position to the outer side of the outer layer protection shell to be reset to the closing state through the elastic force of the torsion spring.
Preferably, outer protection casing includes upper protection casing and lower floor's protection casing, and the outside of upper protection casing is equipped with a plurality of casing ears that hang down, and the outside of lower floor's protection casing is equipped with a plurality of casing bosss with a plurality of casing ears one-to-one lock.
Preferably, plug return springs are respectively arranged on two sides of the inner protection plug, and one ends of the plug return springs are abutted to the inner wall of the outer protection shell to limit the position of the inner protection plug in the inner cavity of the outer protection shell.
Preferably, when the push-pull plug enters the socket, the baffle plate can be pushed by the socket to rotate towards the inner side of the outer-layer protection shell to be opened, so that the socket can enter the inner cavity of the outer-layer protection shell.
Preferably, the plug protection device comprises a protection cap, two limiting hooks are arranged at one end of the protection cap, two limiting hook guide grooves are arranged on one side of the plug insert, the end portions of the two limiting hooks are respectively clamped at the corners of the two limiting hook guide grooves, the limiting hooks can be pushed by the socket to drive the protection cap to rotate around the corners of the limiting hook guide grooves from the closing position, then the protection cap moves to the opening position along the length direction of the limiting hook guide grooves, a reset device is further arranged on the plug insert, and when the push-pull plug withdraws from the socket, the reset device can push the plug protection device to reset to the closing position.
Preferably, the plug insert is provided with a section of sliding barrel guide groove, the sliding barrel guide groove is positioned between the two sections of limiting hook guide grooves, a sliding barrel and a sliding barrel return spring are arranged in the sliding barrel guide groove, the sliding barrel is positioned between the plug protection device and the sliding barrel return spring, and when the push-pull plug is withdrawn from the socket, the sliding barrel return spring can push the sliding barrel and the plug protection device, so that the plug protection device is conveniently reset to a closed position.
According to the technical scheme, the invention has the beneficial effects that:
the push-pull type plug provided by the invention is provided with the shell protection device on the outer layer protection shell, the plug protection device is arranged on the inner protection plug, the inner cavity of the protection shell can be sealed by using the front shell protection device, the plug protection device can seal the port of the through hole of the contact pin, and the shell protection device and the plug protection device are both directly pushed to be opened by the socket when in use, namely, the shell protection device and the plug protection device can be opened in the process that the plug is inserted into the socket without being opened in advance before use, and the shell protection device and the plug protection device can be automatically reset when the plug is withdrawn from the socket, so that the contact pin can not be exposed in the whole working process of the insertion and withdrawal of the plug, the condition that the dust is attached to the surface of the contact pin to influence the light permeability when the contact pin is exposed can be avoided, and the double-layer protection device with the automatic opening and resetting functions is adopted, the dustproof performance of the push-pull plug is greatly improved.
Drawings
FIG. 1 is a schematic view of a plug and receptacle;
FIG. 2 is an exploded view of the plug;
FIG. 3 is a schematic view of an upper protective shell;
FIG. 4 is a schematic view of an internal protection plug;
FIG. 5 is an exploded view of the inner protection plug;
FIG. 6 is an enlarged view of the containment case, cover plate, and unlocking slide;
FIG. 7 is an enlarged view of the plug insert, the protection device return spring, the slide cartridge, and the plug protection device;
fig. 8 is an enlarged view of the locking device.
The labels in the figure are: 1. a plug, 2, a socket, 3, a lead, 4, a guide groove, 5, a guide key, 6, an upper layer protection shell, 7, a lower layer protection shell, 8, a shell protection device, 9, a push-pull device, 10, a shell lug, 11, a shell boss, 12, an inner protection plug, 13, a push-pull boss, 14, a baffle, 15, a pin shaft, 16, a torsion spring, 17, a tail sleeve, 18, a pressing device, 19, a supporting device, 20, a containing shell, 21, a cover plate, 22, an unlocking sliding plate, 23, a limiting device, 24, a pin resetting spring, 25, a pin, 26, a locking device, 27, a plug insert, 28, a sliding barrel resetting spring, 29, a sliding barrel, 30, a plug protection device, 31, a plug resetting spring, 32, a push-pull boss jack, 33, an unlocking hook slot, 34, a push-pull boss sliding slot, 35, a avoiding slot, a lug, 37 and a plug boss, 38. the locking device comprises a locking device rotating shaft, 39, a pin through hole, 40, a sliding cylinder guide groove, 41, a limiting hook guide groove, 42, a protective cap, 43, a limiting hook, 44, a rotating shaft hole, 45, a locking hook, 46, a locking inclined plane, 47, an unlocking hook, 48, an unlocking inclined plane, 49 and an elastic pressing sheet.
Detailed Description
Referring to the drawings, the specific embodiments are as follows:
a push-pull plug with double-layer protection devices is disclosed, as shown in figures 1 and 2, the plug 1 can be inserted into a socket 2 or withdrawn from the socket 2 in a push-pull mode, the plug 1 comprises an inner protection plug 12 positioned in an inner cavity of an outer protection shell, the inner protection plug 12 is connected with a lead 3, the outer protection shell comprises an upper protection shell 6 and a lower protection shell 7, two sides of the upper protection shell 6 are provided with four shell lugs 10, two sides of the lower protection shell are provided with four shell bosses 11 buckled with the four shell lugs 10 in a one-to-one correspondence manner, so that the upper protection shell 6 and the lower protection shell 7 can be connected with each other, the tail end of the upper protection shell 6 is provided with a push-pull device 9, as shown in figure 4, two sides of the inner protection plug 12 are respectively provided with a plug reset spring 31, one end of the plug reset spring 31 is propped against the inner part of the lower protection shell 7, the position of the inner protection plug 12 in the inner cavity of the outer protection shell can be limited, so that the push-pull device 9 drives the plug 1 to perform plugging operation.
As shown in fig. 2, the same side of the upper protection casing 6 and the lower protection casing 7 is provided with a casing protection device 8, the structures of the casing protection devices 8 of the upper protection casing 6 and the lower protection casing 7 are the same, as shown in fig. 3, the casing protection device 8 comprises a baffle plate 14, the baffle plate 14 is arranged on a pin shaft 15 in a penetrating manner, and the pin shaft 15 is provided with a torsion spring 16 capable of driving the baffle plate 14 to rotate towards the outside.
When the plug 1 is inserted into the socket 2, the socket 2 contacts with the baffle 14, and pushes the baffle 14 towards the inner side of the outer protection shell, the baffle 14 rotates to the position which is horizontal or close to the horizontal position with the upper surface and the lower surface of the outer protection shell, and at the moment, the socket 2 can enter the inner cavity of the outer protection shell, namely, the shell protection devices 8 of the upper protection shell 6 and the lower protection shell 7 are opened simultaneously.
When the plug 1 is withdrawn from the socket 2, the elastic force of the torsion spring 16 continuously acts on the baffle 14, so that the baffle 14 rotates towards the outer side of the outer protection shell, the shell protection devices 8 of the upper protection shell 6 and the lower protection shell 7 reset simultaneously, and the shell protection devices are kept in a state of being matched with and sealing the inner cavity of the outer protection shell under the elastic force of the torsion spring 16. As shown in fig. 3, the inner side of the upper protective shell 6 is further provided with a push-pull boss 13.
As shown in fig. 4 and 5, the inner protection plug 12 includes a housing 20, a cover plate 21, an unlocking slide plate 22, a tail sleeve 17, a pressing device 18, a supporting device 19 and two plug inserts 27, as shown in fig. 7, a pin through hole 39 is formed in the plug insert 27, a pin 25 is arranged in the pin through hole 39, one end of the plug insert 27 is installed in the housing 20, the supporting device 19, the pressing device 18 and the tail sleeve 17 are sequentially sleeved and installed on the other side of the housing 20, two limiting devices 23 are arranged in the housing 20, and a pin return spring 24 is respectively arranged between the two limiting devices 23 and the two pins 25.
As shown in fig. 6, the upper half of the accommodating case 20 is open, the cover plate 21 is covered on the accommodating case 20, four plug lugs 36 are provided on the outer side of the cover plate 21, and four plug bosses 37 are provided on the outer side of the accommodating case 20 to be engaged with the four plug lugs 36 one by one, so that the cover plate 21 and the accommodating case 20 can be connected to each other. Two avoiding grooves 35 are further formed in one side of the cover plate 21, and the tail ends of the two plug-in units 27 are respectively located inside the two avoiding grooves 35.
As shown in fig. 4 and 5, the plug protection device 30 is disposed at the end of the plug insert 27, as shown in fig. 7, the plug protection device 30 includes a protection cap 42, two limiting hooks 43 are disposed at one end of the protection cap 42, two limiting hook guide grooves 41 are disposed at one side of the plug insert 27, the ends of the two limiting hooks 43 are respectively clamped at the corners of the two limiting hook guide grooves 41, and the protection cap 42 covers the port of the pin through hole 39, so that the plug protection device 30 is in a closed position capable of closing the port of the pin through hole 39.
The plug insert 27 is further provided with a section of sliding barrel guide groove 40, the sliding barrel guide groove 40 is located between two sections of limiting hook guide grooves 41, the sliding barrel guide groove 40 is parallel to the pin through hole 39, the front end of the sliding barrel guide groove 40 is located on the surface of the plug insert 27, and the tail end of the sliding barrel guide groove 40 is of a blind hole structure located inside the plug insert 27. A sliding barrel 29 and a sliding barrel return spring 28 are arranged in the sliding barrel guide groove 40, one end of the sliding barrel return spring 28 abuts against the inner side end face of the blind hole structure of the sliding barrel guide groove 40, the other end of the sliding barrel return spring 28 abuts against one end of the sliding barrel 29, and the other end of the sliding barrel 29 abuts against the position, located between the two limiting hooks 43, on the plug protection device 30.
When the plug 1 is inserted into the socket 2, the socket 2 contacts and pushes the two limit hooks 43, the two limit hooks 43 drive the protective cap 42 to rotate around the corner of the limit hook guide groove 41 from the closed position and then move along the length direction of the limit hook guide groove 41, finally the plug protection device 30 stays at the open position where the port of the pin through hole 39 is exposed, and the socket 2 can be butted with the pin 25 in the pin through hole 39; at this time, the slide cylinder 29 is also pushed by the plug protector 30 to move in the slide cylinder guide groove 40, and the slide cylinder return spring 28 is compressed.
When the plug 1 is withdrawn from the socket 2, the slide cylinder return spring 28 will extend and push the slide cylinder 29 to move reversely, the slide cylinder 29 will push the plug protector 30, so that the two limit hooks 43 will move to the corners of the limit hook guide grooves 41 again, and then rotate around the corners of the limit hook guide grooves 41 to return to the state that the protection cap 42 is covered on the end of the pin through hole 39, the plug protector 30 will return to the closed position, and the plug protector 30 can be automatically kept at the closed position by the elastic force of the slide cylinder return spring 28.
As shown in fig. 4 and 5, the inner protection plug 12 further includes a locking device 26 and an unlocking slide plate 22, as shown in fig. 7, a locking device rotating shaft 38 is inserted through the middle of the plug insert 27, as shown in fig. 8, a rotating shaft hole 44 is formed in the locking device 26, so that the two locking devices 26 are respectively rotatably disposed on the two plug inserts 27, a locking hook 45 and a locking inclined surface 46 are disposed on one side of the locking device 26 close to the port of the pin through hole 39, and an unlocking hook 47 and an unlocking inclined surface 48 are disposed on one side of the locking device 26 away from the port of the pin through hole 39.
When the plug 1 is inserted into the socket 2, the end of the socket 2 contacts with the locking inclined surface 46 and moves along the locking inclined surface 46 until the locking hook 45 hooks into the locking groove of the socket 2; the locking device 26 is provided with an elastic pressing sheet 49, the bottom end of the elastic pressing sheet 49 is pressed on the surface of the plug insert 27, and the plug insert 27 is continuously pushed by the elastic force, so that the locking device 26 generates a rotation trend with the same direction as the locking hook 45, and the locking hook 45 can be kept in a state of being buckled with the socket 2, so that the plug 1 and the socket 2 are locked with each other.
As shown in fig. 6, the unlocking slide plate 22 is provided with two unlocking hook slots 33 and a push-pull boss insertion hole 32, the cover plate 21 is provided with a push-pull boss slide slot 34, the unlocking hooks 47 of the two locking devices 26 respectively extend into the two unlocking hook slots 33, and the push-pull boss 13 on the inner side of the upper layer protection shell 6 extends into the push-pull boss insertion hole 32.
When the plug 1 is withdrawn from the socket 2, the push-pull boss 13 of the upper-layer protection shell 6 moves in the push-pull boss sliding groove 34, and the unlocking sliding plate 22 is pulled through the push-pull boss insertion hole 32, at this time, the edge of the unlocking hook insertion hole 33 moves on the unlocking inclined surface 48, the moving direction of the unlocking hook insertion hole 33 is parallel to the length direction of the contact pin 25 and does not deviate, so that the edge of the unlocking hook insertion hole 33 pushes the unlocking inclined surface 48, the locking device 26 rotates along the direction opposite to the direction of the locking hook 45 until the locking hook 45 is separated from the locking groove of the socket 2, the plug 1 and the socket 2 are unlocked, and the plug 1 can be smoothly pulled out of the socket 2 by continuously pulling the plug 1.
After the plug 1 is withdrawn from the socket 2, with the pulling stop of the unlocking slide plate 22, the elastic force of the elastic pressing piece 49 can make the locking device 26 reversely rotate and reset in the same direction as the orientation of the locking hook 45, and with the reverse rotation of the locking device 26, the unlocking inclined surface 48 can push the edge of the unlocking hook slot 33, so that the unlocking slide plate 22 can also return to the position where the locking device 26 can lock, and the plug 1 can still be automatically locked when being inserted into the socket 2 next time.
Claims (8)
1. A push-pull plug with a double-layer protection device is characterized in that: including interior protection plug (12) that is located outer protective housing inner chamber, one side of interior protection plug (12) is equipped with plug insert (27), set up contact pin through-hole (39) that hold contact pin (25) on plug insert (27), the one end of outer protective housing is equipped with casing protection device (8), casing protection device (8) can be promoted and opened by the socket, and automatic re-setting is in order to seal the inner chamber of outer protective housing when plug-type plug withdraws from the socket in, the tip of plug insert (27) is equipped with plug protection device (30), plug protection device (30) can be promoted by the socket and move to the exposed open position of messenger contact pin through-hole (39) port from the closed position that seals contact pin through-hole (39) port, and automatic re-setting is to the closed position when plug withdraws from the socket in.
2. A push-pull plug with a dual layer protection device as claimed in claim 1, wherein: outer protection casing includes upper protection casing (6) and lower floor protection casing (7), interior protection plug (12) still include locking device (26) and unblock slide (22), locking device (26) rotate to set up on plug insert (27), push-and-pull boss (13) of upper protection casing (6) inboard stretch into push-and-pull boss jack (32) of unblock slide (22), when plug-and-pull plug gets into in the socket, locking device (26) can rotate to the locking position with the socket lock automatically, when plug-and-pull withdraws from in the socket, push-and-pull boss (13) can stimulate unblock slide (22), and drive locking device (26) from the locking position rotatory to the unblock position with the socket separation.
3. A push-pull plug with a dual layer protection device as claimed in claim 1, wherein: the outer-layer protection shell comprises an upper-layer protection shell (6) and a lower-layer protection shell (7), a shell protection device (8) is respectively arranged on one side, close to the plug protection device (30), of the upper-layer protection shell (6) and the lower-layer protection shell (7), the shell protection device (8) comprises a baffle (14), the baffle (14) is arranged on a pin shaft (15) in a penetrating mode, a torsion spring (16) capable of driving the baffle (14) to rotate is arranged on the pin shaft (15), and the baffle (14) is kept in a natural closed state through the elastic force of the torsion spring (16), so that the baffle (14) of the upper-layer protection shell (6) and the baffle (14) of the lower-layer protection shell (7) are matched to seal an inner cavity of the outer-layer protection shell; when the push-pull plug is withdrawn from the socket, the baffle plate (14) is rotated from the opening position to the outer side of the outer layer protection shell to be reset to the closing state through the elastic force of the torsion spring (16).
4. A push-pull plug with a dual layer protection mechanism according to claim 1, wherein: the outer protective shell comprises an upper protective shell (6) and a lower protective shell (7), a plurality of shell lugs (10) are arranged on the outer side of the upper protective shell (6), and a plurality of shell bosses (11) which are buckled with the shell lugs (10) in a one-to-one correspondence manner are arranged on the outer side of the lower protective shell (7).
5. A push-pull plug with a dual layer protection device as claimed in claim 1, wherein: plug reset springs (31) are respectively arranged on two sides of the inner protection plug (12), and one ends of the plug reset springs (31) are abutted to the inner wall of the outer protection shell to limit the position of the inner protection plug (12) in the inner cavity of the outer protection shell.
6. A push-pull plug with a dual layer protection device according to claim 3, wherein: when the push-pull plug enters the socket, the baffle (14) can be pushed by the socket to rotate towards the inner side of the outer layer protection shell for opening, so that the socket can enter the inner cavity of the outer layer protection shell.
7. A push-pull plug with a dual layer protection device as claimed in claim 1, wherein: plug protection device (30) are including protective cap (42), the one end of protective cap (42) is equipped with two spacing colludes (43), one side of plug insert (27) is equipped with two sections spacing colludes guide way (41), the tip of two spacing colludes (43) is the card respectively and is established at the turning of two sections spacing colludes guide way (41), spacing collude (43) can be promoted by the socket and drive protective cap (42) from the closed position around the turning rotation of spacing colluding guide way (41), move to the open position along the length direction of spacing colluding guide way (41) again, still be equipped with resetting means on plug insert (27), when plug-pull plug withdraws from the socket in, resetting means can promote plug protection device (30) to reset to the closed position.
8. A push-pull plug with a dual layer protection device as claimed in claim 7, wherein: the plug insert (27) is provided with a section of sliding barrel guide groove (40), the sliding barrel guide groove (40) is located between two sections of limiting hook guide grooves (41), a sliding barrel (29) and a sliding barrel reset spring (28) are arranged in the sliding barrel guide groove (40), the sliding barrel (29) is located between the plug protection device (30) and the sliding barrel reset spring (28), and when the push-pull plug is withdrawn from the socket, the sliding barrel reset spring (28) can push the sliding barrel (29) and the plug protection device (30) so that the plug protection device (30) can be reset to a closed position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210058767.4A CN114447683B (en) | 2022-01-19 | 2022-01-19 | Push-pull plug with double-layer protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210058767.4A CN114447683B (en) | 2022-01-19 | 2022-01-19 | Push-pull plug with double-layer protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114447683A true CN114447683A (en) | 2022-05-06 |
| CN114447683B CN114447683B (en) | 2024-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210058767.4A Active CN114447683B (en) | 2022-01-19 | 2022-01-19 | Push-pull plug with double-layer protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114447683B (en) |
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| CN114447683B (en) | 2024-03-19 |
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