CN211719834U - Safety protection door and socket - Google Patents

Abstract

The utility model relates to the technical field of power supply connecting devices, and provides a safety protection door, which comprises a first rotating shaft which is vertically arranged; a first plane door leaf, a second plane door leaf, a first inclined plane door leaf and a second inclined plane door leaf which are rotatably connected with the first rotating shaft are arranged on one side of the first rotating shaft; the first plane door leaf is connected with the first inclined plane door leaf, and the second plane door leaf is connected with the second inclined plane door leaf; the first elastic part drives the first inclined door leaf and the second inclined door leaf to be away from each other. A socket is provided, which comprises a panel, a bottom shell connected with the panel, and a safety protection door arranged between the panel and the bottom shell. Through adopting inclined plane door leaf and plane door leaf cross fit's structure, not only realized singly inserting safety protection's function, can avoid appearing the user moreover and do not insert the condition that blocks appear when absolute with the base pin of plug.

Description

Safety protection door and socket

Technical Field

The utility model relates to a power supply connecting device technical field, in particular to safety protection door and socket.

Background

Power outlets are widely used low voltage electrical connections. The new national standard of the socket requires that a protective door is required to be arranged on the socket which is arranged below 1.8 meters and the jack of the movable socket, so that the direct contact between the conductive metal inside the socket and the external conductive foreign matter is prevented, and the electric shock accident caused by the accidental contact of fingers or metal objects of children is avoided.

The patent application with the application number of CN201621075307.9 discloses a five-hole socket protection door, which utilizes the seesaw principle and prevents a single pole from being inserted into a jack through the matching of a stop table and a hook head so as to realize the function of single-plug safety protection. The mating arrangement of the stop and the hook effectively prevents insertion of the single pole into the jack, but also prevents proper plug use. Taking a two-pin plug as an example, when the plug is inserted into a socket, if a user does not insert two pins of the plug absolutely at the same time, and the plug is slightly inclined when inserted, one pin of the plug is inserted first, and the other pin is inserted later, so that the sliding block is blocked by a stop table and a hook head arranged on a protection door to slide, and the plug is blocked when inserted; the plug can be inserted into the jack of the socket again only after the inserted pins arrive or the user can adjust the positions of the two pins by shaking the plug left and right. This makes the socket using the protective door easy to be stuck and unsmooth in use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a safety protection door and socket are provided to the condition that blocks appears when inserting the plug into the socket.

The embodiment of the utility model provides a solve the technical scheme that its technical problem adopted and be: the safety protection door comprises a first rotating shaft which is vertically arranged; a first plane door leaf, a second plane door leaf, a first inclined plane door leaf and a second inclined plane door leaf which are rotatably connected with the first rotating shaft are arranged on one side of the first rotating shaft; the first plane door leaf is connected with the first inclined plane door leaf, and the second plane door leaf is connected with the second inclined plane door leaf;

the first elastic part drives the first inclined door leaf and the second inclined door leaf to be away from each other; under the action force provided by the first elastic part, the first plane door leaf and the second plane door leaf are respectively abutted against the first limiting part, the second inclined plane door leaf is positioned right above the first plane door leaf, and the first inclined plane door leaf is positioned right above the second plane door leaf.

Further, the device also comprises a first base; the first rotating shaft is connected with the first base.

Further, a first mounting groove is formed in the first base; the first rotating shaft, the first plane door leaf, the second plane door leaf, the first inclined plane door leaf and the second inclined plane door leaf are all arranged in the first mounting groove; and a tripolar jack is arranged at the bottom of the first mounting groove.

Further, the first limiting part is a first fixed block connected with the first base; the first plane door leaf is provided with a first abutting block which extends towards the direction of the first fixed block and is abutted and matched with the first fixed block; and a second abutting block which extends towards the direction of the first fixed block and is in abutting fit with the first fixed block is arranged on the second plane door leaf.

Furthermore, be provided with on the first fixed block with first butt piece matched with first draw-in groove, be provided with on the first fixed block with second butt piece matched with second draw-in groove.

Further, the device also comprises a second base connected with the first base; a third plane door leaf, a fourth plane door leaf, a third inclined plane door leaf and a fourth inclined plane door leaf are arranged on the second base in a sliding mode along the first direction; the third plane door leaf is connected with a third inclined plane door leaf, and the fourth plane door leaf is connected with a fourth inclined plane door leaf;

the second elastic part drives the third inclined plane door leaf and the fourth inclined plane door leaf to be away from each other; under the action force provided by the second elastic piece, the third plane door leaf and the fourth plane door leaf are respectively abutted against the second limiting piece, the fourth inclined plane door leaf is positioned right above the third plane door leaf, and the third inclined plane door leaf is positioned right above the fourth plane door leaf.

Furthermore, a sliding groove arranged along a first direction is formed in the second base; the third plane door leaf, the fourth plane door leaf, the third inclined plane door leaf and the fourth inclined plane door leaf are arranged in the sliding groove and can slide in the sliding groove along the first direction; and two-pole jacks are arranged at the bottom of the sliding groove.

Furthermore, the second limiting part comprises two second fixing blocks which are arranged at intervals and are respectively in butt joint with the third plane door leaf and the fourth plane door leaf.

Furthermore, the first base and the second base are of an integrally formed structure.

The socket comprises a panel and a bottom shell connected with the panel; the panel is provided with a jack; the bottom shell is provided with an insert sleeve assembly; the safety protection door is also included; the safety protection door is arranged between the panel and the bottom shell.

The utility model has the advantages that: the utility model discloses safety protection door and socket through adopting inclined plane door leaf and plane door leaf cross fit's structure, can prevent that the monopole from inserting the jack, have realized singly inserting safety protection's function. Compared with the prior art, the situation that a user does not insert the pins of the plug absolutely and is blocked can be avoided, and the plug can be smoothly inserted into the socket of the safety protection door adopting the embodiment.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below; it is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a perspective view of a safety protection door according to an embodiment of the present invention;

FIG. 2 is an exploded view of a safety door according to an embodiment of the present invention;

fig. 3 is a sectional view and a force analysis diagram of the bevel door leaf according to the embodiment of the present invention;

fig. 4 is a sectional view and a force analysis diagram of a flat door leaf in an embodiment of the present invention;

fig. 5 is a perspective view of a receptacle according to an embodiment of the present invention;

fig. 6 is an exploded view of a receptacle according to an embodiment of the present invention.

The reference numbers in the figures are: 10-panel, 20-bottom shell, 30-security protection door, 101-jack, 201-plug-in-sleeve assembly, 301-first rotating shaft, 302-first planar door leaf, 303-second planar door leaf, 304-first inclined door leaf, 305-second inclined door leaf, 306-first elastic member, 307-first base, 308-first installation groove, 309-three-pole jack, 310-first fixed block, 311-first abutting block, 312-second abutting block, 313-first card slot, 314-second card slot, 315-second base, 316-third planar door leaf, 317-fourth planar door leaf, 318-third inclined door leaf, 319-fourth inclined plane, 320-second elastic member, 321-chute, 322-two-pole jack, 323-second fixed block, 324-first connecting plate, 325-second connecting plate, 326-first hole, 327-second hole.

Detailed Description

The present invention will be further explained with reference to the drawings and examples. It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. Unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate.

As shown in fig. 1 and fig. 2, the safety protection door 30 of the embodiment of the present invention includes a first rotating shaft 301 vertically disposed; a first plane door leaf 302, a second plane door leaf 303, a first inclined door leaf 304 and a second inclined door leaf 305 which are rotatably connected with the first rotating shaft 301 are arranged on one side of the first rotating shaft; the first planar door leaf 302 is connected to a first inclined door leaf 304, and the second planar door leaf 303 is connected to a second inclined door leaf 305;

the first elastic member 306 is disposed between the first flat door 302 and the second flat door 303, and drives the first inclined door 304 and the second inclined door 305 to move away from each other; under the action force provided by the first elastic member 306, the first planar door 302 and the second planar door 303 respectively abut against the first limiting member, the second inclined door 305 is located right above the first planar door 302, and the first inclined door 304 is located right above the second planar door 303.

It should be understood that, for the convenience of description, the descriptions about the directions of "up", "down", "left", "right", "horizontal", "vertical", etc. are only given by way of example as shown in the drawings, and the positional relationship and the moving direction between the respective components can be adjusted adaptively according to the practical application.

As shown in fig. 1 and fig. 2, the safety protection door 30 according to the embodiment of the present invention includes a first rotating shaft 301, a first door, a second door, a first limiting member, and a first elastic member 306. The first rotating shaft 301 is vertically arranged; the first door and the second door are arranged in a staggered manner and are rotatably connected with the first rotating shaft 301, so that the first door and the second door can rotate around the first rotating shaft 301 respectively. The first door and the second door are not linked with each other, that is, when the first door rotates around the first rotating shaft 301, the second door may or may not rotate; when the second door rotates about the first rotation axis 301, the first door may or may not rotate.

As shown in fig. 2, the first door includes a first connection plate 324 which is horizontally disposed and has a fan shape, a first flat door leaf 302 which extends outward in a radial direction of the first connection plate 324 and has an end connected to the first connection plate 324, and a first inclined door leaf 304 which extends outward in the radial direction of the first connection plate 324 and has an end connected to the first connection plate 324. The first connecting plate 324 is used for being rotatably connected with the first rotating shaft 301, so that the first planar door leaf 302 and the first inclined door leaf 304 rotate together around the first rotating shaft 301.

The second door includes a second connection plate 325 which is horizontally arranged and takes a fan shape, a second flat door leaf 303 which extends outward along the radial direction of the second connection plate 325 and has an end connected with the second connection plate 325, and a second inclined door leaf 305 which extends outward along the radial direction of the second connection plate 325 and has an end connected with the second connection plate 325. The second connecting plate 325 is used for being rotatably connected with the first rotating shaft 301, so that the second flat door leaf 303 and the second inclined door leaf 305 rotate together around the first rotating shaft 301.

As shown in fig. 1, after the first door and the second door are installed on the first rotating shaft 301 together, the first flat door 302 of the first door and the second inclined door 305 of the second door are located at the left side of the first limiting member, and the second inclined door 305 is located above the first flat door 302; the second planar door leaf 303 of the second door and the first inclined door leaf 304 of the first door are located on the right side of the first limiting member, and the first inclined door leaf 304 is located above the second planar door leaf 303.

The first elastic member 306 is disposed between the first inclined door 304 and the second inclined door 305, and is used for driving the first inclined door 304 and the second inclined door 305 away from each other. In the embodiment of the present invention, first elastic component 306 is a torsion spring, and the middle part cover of torsion spring is on first pivot 301, and the first end of torsion spring is connected with first inclined plane door leaf 304, and the second end of torsion spring is connected with second inclined plane door leaf 305, and under the reset action power that the torsion spring provided, make first inclined plane door leaf 304 and second inclined plane door leaf 305 keep away from each other. Of course, the first elastic member 306 may also be other elastic members such as a compression spring, an elastic body made of a rubber material, and the like, and is not particularly limited herein.

As shown in fig. 1, under the action force provided by the first elastic member 306, the first planar door 302 and the second planar door 303 respectively abut against the first limiting member, the second inclined door 305 is vertically overlapped with the first planar door 302, the second inclined door 305 is located right above the first planar door 302, the first inclined door 304 is vertically overlapped with the second planar door 303, and the first inclined door 304 is located right above the second planar door 303.

Fig. 3 is a cross-sectional view and a force analysis diagram of the inclined door leaf according to the embodiment of the present invention, and the second inclined door leaf 305 is taken as an example below, the lower surface of the second inclined door leaf 305 is a horizontally disposed plane, and the upper surface of the second inclined door leaf 305 is an obliquely disposed plane, so that a wedge shape is formed by the upper surface and the lower surface of the second inclined door leaf 305. When the insert applies a vertically downward inserting pressure F to the upper surface of the second inclined door 305, since the direction of the inserting pressure F is not perpendicular to the upper surface of the second inclined door 305, the inserting pressure F necessarily generates a horizontal component F1 on the upper surface of the second inclined door 305, the direction of the horizontal component F1 is opposite to the direction of the force F1' of the first elastic member 306 on the second inclined door 305. When the insertion force F is large enough and the horizontal component F1 is larger than F1', the second inclined door 305 can rotate around the first rotation axis 301 to force the second inclined door 305 to open. Similarly, since the upper surface and the lower surface of the first inclined door 304 form a wedge shape, when the insertion pressure applied by the insert to the upper surface of the first inclined door 304 is large enough, the first inclined door 304 can be forced to open.

Fig. 4 is a cross-sectional view and a force analysis diagram of a flat door leaf according to an embodiment of the present invention, and the first flat door leaf 302 is described below as an example, the upper surface and the lower surface of the first flat door leaf 302 are both horizontally disposed planes, when an insert applies a vertical downward insertion force F to the upper surface of the first flat door leaf 302, since the direction of the insertion force F is perpendicular to the upper surface of the first flat door leaf 302, the insertion force F does not generate a horizontal component on the upper surface of the first flat door leaf 302, and thus, no matter how large the insertion force F is, the first flat door leaf 302 cannot be directly forced to open. Similarly, since the upper and lower surfaces of the second planar door 303 are both horizontally disposed planes, the second planar door 303 cannot be directly forced to open regardless of the insertion pressure applied by the insert to the upper surface of the second planar door 303.

The operation principle of the first door and the second door will be described with reference to fig. 1 and 2: as shown in fig. 1, the first door and the second door are in a closed state protecting the insertion hole of the socket under the force provided by the first elastic member 306. Since the second inclined door 305 and the first flat door 302 are disposed to overlap each other, even though the second inclined door 305 is forced to open by the insertion pressure of the insert in the case of single insertion, the insertion pressure of the insert cannot directly force the first flat door 302 to open because the position of the first flat door 302 is not changed. Similarly, since the first inclined door 304 and the second flat door 303 are disposed in an overlapping manner, even if the first inclined door 304 is forced to open by the insertion pressure provided by the insert in the case of single insertion, the second flat door 303 cannot be directly forced to open by the insertion pressure provided by the insert because the position of the second flat door 303 is not changed.

In the case of double insertion, that is, when two inserts simultaneously apply insertion pressure to the first inclined door leaf 304 and the second inclined door leaf 305, when the insertion pressure is large enough and overcomes the acting force of the first elastic member 306, as shown in fig. 1, the first inclined door leaf 304 rotates counterclockwise around the first rotating shaft 301, and the second inclined door leaf 305 rotates clockwise around the first rotating shaft 301, so that the first inclined door leaf 304 and the second inclined door leaf 305 approach each other; meanwhile, the first planar door 302 is driven to rotate counterclockwise around the first rotating shaft 301 by the first inclined door 304, and the second planar door 303 is driven to rotate clockwise around the first rotating shaft 301 by the second inclined door 305, so that the first planar door 302 and the second planar door 303 are away from each other; this allows four leaves to open simultaneously and forms a passage for an insert to pass through between the first inclined leaf 304 and the second planar leaf 303 and between the second inclined leaf 305 and the first planar leaf 302, respectively, and two inserts to pass through the two passages, respectively.

Therefore, the utility model discloses safety protection door 30 through adopting inclined plane door leaf and plane door leaf cross complex structure, can prevent that the monopole from inserting the jack, has realized singly inserting safety protection's function. Compared with the prior art, the situation that a user does not insert the pins of the plug absolutely and is blocked can be avoided, and the plug can be smoothly inserted into the socket adopting the safety protection door 30 of the embodiment.

The safety protection door 30 of the above embodiment may be installed in a two-hole socket into which a two-pin plug is inserted, so as to protect the insertion holes of the two-hole socket. Preferably, the safety protection door 30 of the above embodiment is installed in a three-hole socket into which a three-pin plug is inserted, and protects a live wire jack and a neutral wire jack in the three-hole socket.

In a preferred embodiment, the safety protection door 30 further includes a first base 307; the first shaft 301 is connected to a first base 307. The first base 307 may be a flat plate, an annular structure formed by a circle of side plates, or another structure, and is not limited specifically herein.

Preferably, a first mounting groove 308 is formed on the first base 307; the first rotating shaft 301, the first planar door leaf 302, the second planar door leaf 303, the first inclined door leaf 304 and the second inclined door leaf 305 are all arranged in the first mounting groove 308; the bottom of the first mounting groove 308 is provided with a three-pole jack 309.

As shown in fig. 1 and fig. 2, the first base 307 includes a bottom plate disposed horizontally, and a circle of side plates disposed above the bottom plate, and a first mounting groove 308 is enclosed by the bottom plate and the side plates; the lower end of the first rotating shaft 301 is fixedly connected with the bottom plate. The first rotating shaft 301, the first planar door leaf 302, the second planar door leaf 303, the first inclined door leaf 304 and the second inclined door leaf 305 are arranged in the first mounting groove 308, so that the parts are protected, after the safety protection door 30 is mounted in the socket, the first base 307 is clamped tightly through the panel and the bottom shell of the socket, and the reliability and the stability of the safety protection door 30 after being mounted are guaranteed.

By providing a three-pole jack 309 at the bottom of the first mounting slot 308, at least the live and neutral pins of the three-pin plug are secured through the three-pole jack 309. The three-pole jack 309 may be a through hole formed in the bottom of the first mounting slot 308, the through hole being sized to allow at least the live pin and the neutral pin of the three-pin plug to pass therethrough, and of course, the through hole being sized to allow the ground pin of the three-pin plug to pass therethrough. Preferably, the three-pole jack 309 includes a three-pole live jack and a three-pole neutral jack disposed at the bottom of the first mounting groove 308. Further, the three-pole jack 309 further includes a three-pole ground jack disposed on the first base 307.

The first limiting member is used to control the minimum distance between the first planar door 302 and the second planar door 303, and the first limiting member may be a stopper disposed on the first rotating shaft 301.

In a preferred embodiment, the first limiting member is a first fixing block 310 connected to the first base 307; the first flat door leaf 302 is provided with a first abutting block 311 which extends towards the direction of the first fixed block 310 and is abutted and matched with the first fixed block 310; the second flat door leaf 303 is provided with a second abutting block 312 which extends toward the first fixing block 310 and is in abutting engagement with the first fixing block 310. Preferably, the first fixing block 310 is provided with a first engaging groove 313 matched with the first abutting block 311, and the first fixing block 310 is provided with a second engaging groove 314 matched with the second abutting block 312.

As shown in fig. 1 and 2, the first fixing block 310 is disposed on one side of the first rotating shaft 301 and is fixedly connected to the first base 307; the first flat door leaf 302 is provided with a first abutting block 311, and the second flat door leaf 303 is provided with a second abutting block 312. Under the action force of the first elastic element 306, the first abutting block 311 abuts against the left side of the first fixed block 310, and the end of the first abutting block 311 extends into the first slot 313; the second abutting block 312 abuts against the right side of the first fixing block 310, and the end of the second abutting block 312 extends into the second slot 314.

The first abutting block 311 and the second abutting block 312 are positioned so as not to affect the normal opening of the safety door 30, that is, when the safety door 30 is in an open state, the pins of the plug can smoothly pass through the installation door 30 and be plugged into the plug bush assembly of the socket to form a conductive connection.

In fig. 2, an embodiment of the first and second abutting blocks 311 and 312 is shown, the first abutting block 311 is a long bar-shaped structure disposed at the right side of the first planar door leaf 302 and extending along the radial direction of the first connecting plate 324, and a first hole 326 for passing the pin of the plug is provided between the first planar door leaf 302 and the first abutting block 311. The second abutting block 312 is a long strip-shaped structure disposed on the left side of the second flat door 303 and extending along the radial direction of the second connecting plate 325, and a second hole 327 for a pin of a plug to pass through is provided between the second flat door 303 and the second abutting block 312. When security door 30 is in the open position, two prongs of a receptacle pass through first aperture 326 and second aperture 327, respectively. Preferably, the first abutting block 311 and the first planar door 302 are integrally formed, and the second abutting block 312 and the second planar door 303 are integrally formed.

The security protection door 30 of the above embodiment is preferably adapted to a three-hole outlet in order to adapt the security protection door 30 to a five-hole outlet. As a preferred embodiment, the safety protection door 30 of the embodiment of the present invention further includes a second base 315 connected to the first base 307; a third planar door leaf 316, a fourth planar door leaf 317, a third inclined door leaf 318 and a fourth inclined door leaf 319 are slidably mounted on the second base 315 along the first direction; the third planar door leaf 316 is connected to the third inclined door leaf 318, and the fourth planar door leaf 317 is connected to the fourth inclined door leaf 319;

a second elastic member 320 disposed between the third flat door 316 and the fourth flat door 317 and driving the third inclined door 318 and the fourth inclined door 319 to move away from each other; under the action force provided by the second elastic member 320, the third planar door leaf 316 and the fourth planar door leaf 317 are respectively abutted against the second limiting member, the fourth inclined door leaf 319 is located right above the third planar door leaf 316, and the third inclined door leaf 318 is located right above the fourth planar door leaf 317.

As shown in fig. 1 and fig. 2, the safety protection door 30 further includes a second base 315, a third door, a fourth door, a second limiting member, and a second elastic member 320. The second base 315 is connected to the first base 307, and preferably, the first base 307 and the second base 315 are an integrally formed structure. The third door and the fourth door are arranged in a staggered mode and are installed on the second base 315 in a sliding mode, so that the third door and the fourth door can slide back and forth along the first direction. The third door and the fourth door are not linked with each other, namely, when the third door slides along the first direction, the fourth door can slide or be still; when the fourth door slides in the first direction, the third door may slide or may be stationary.

As shown in fig. 2, the first direction is parallel to the horizontal plane, and the third door includes a third flat door leaf 316 and a third inclined door leaf 318 that are disposed at an interval along the first direction and connected to each other; the fourth door includes a fourth flat door leaf 317 and a fourth inclined door leaf 319 which are disposed at an interval along the first direction and connected to each other.

The second limiting member is fixedly connected to the second base 315, when the third door and the fourth door are slidably mounted on the second base 315, the third flat door leaf 316 of the third door and the fourth inclined door leaf 319 of the fourth door are located on the left side of the second limiting member, and the fourth inclined door leaf 319 is located above the third flat door leaf 316; the fourth flat door leaf 317 of the fourth door and the third inclined door leaf 318 of the third door are located on the right side of the second limiting member, and the third inclined door leaf 318 is located above the fourth flat door leaf 317.

The second elastic member 320 is disposed between the third inclined door leaf 318 and the fourth inclined door leaf 319, and is used for driving the third inclined door leaf 318 and the fourth inclined door leaf 319 to move away from each other. In the embodiment of the present invention, the second elastic member 320 is a torsion spring, the middle portion of the torsion spring is sleeved on the positioning shaft disposed on the first fixing block 310, the first end of the torsion spring is connected to the third inclined-plane door leaf 318, the second end of the torsion spring is connected to the fourth inclined-plane door leaf 319, and the third inclined-plane door leaf 318 and the fourth inclined-plane door leaf 319 are kept away from each other under the reset action force provided by the torsion spring. Of course, the second elastic member 320 may also be other elastic members such as a compression spring, an elastic body made of a rubber material, and the like, and is not particularly limited herein.

As shown in fig. 1, under the action force provided by the second elastic member 320, the third planar door leaf 316 and the fourth planar door leaf 317 are respectively abutted against the second limiting member, the third inclined door leaf 318 and the fourth planar door leaf 317 are vertically overlapped, the third inclined door leaf 318 is located right above the fourth planar door leaf 317, the fourth inclined door leaf 319 and the third planar door leaf 316 are vertically overlapped, and the fourth inclined door leaf 319 is located right above the third planar door leaf 316.

Fig. 3 is a sectional view and a force analysis diagram of the inclined door leaf according to the embodiment of the present invention, and the fourth inclined door leaf 319 is taken as an example below, the lower surface of the fourth inclined door leaf 319 is a horizontally disposed plane, and the upper surface of the fourth inclined door leaf 319 is a obliquely disposed plane, so that a wedge shape is formed by the upper surface and the lower surface of the fourth inclined door leaf 319. When the insert applies a vertically downward inserting pressure F to the upper surface of the fourth inclined door leaf 319, since the direction of the inserting pressure F is not perpendicular to the upper surface of the fourth inclined door leaf 319, the inserting pressure F necessarily generates a horizontal component F1 on the upper surface of the fourth inclined door leaf 319, the direction of the horizontal component F1 is opposite to the direction of the force F1' of the second elastic member 320 to the fourth inclined door leaf 319. When the insertion force F is large enough and the horizontal component force F1 is larger than F1', the fourth inclined door 319 can slide along the first direction to force the fourth inclined door 319 to open. Similarly, since the upper surface and the lower surface of the third door 318 are wedge-shaped, the third door 318 can be forced to open when the insert exerts a sufficient insertion force on the upper surface of the third door 318.

Fig. 4 is a cross-sectional view and a force analysis diagram of a flat door leaf according to an embodiment of the present invention, and a third flat door leaf 316 is described below as an example, wherein the upper surface and the lower surface of the third flat door leaf 316 are both horizontally disposed planes, and when an insert applies a vertical downward insertion force F to the upper surface of the third flat door leaf 316, the direction of the insertion force F is perpendicular to the upper surface of the third flat door leaf 316, so that the insertion force F does not generate a horizontal component on the upper surface of the flat door leaf 316, and thus the third flat door leaf 316 cannot be directly forced to open regardless of the insertion force F. Similarly, since the upper and lower surfaces of the fourth flat door 317 are both horizontally disposed planes, the fourth flat door 317 cannot be directly forced to open regardless of the insertion pressure applied by the insert to the upper surface of the fourth flat door 317.

The working principle of the third door and the fourth door is described below with reference to fig. 1 and 2: as shown in fig. 1, under the force provided by the second elastic member 320, the third door and the fourth door are in a closed state for protecting the insertion hole of the socket. Since the fourth inclined door 319 and the third flat door 316 are overlapped with each other, even though the insertion pressure provided by the insert can force the fourth inclined door 319 to open in the case of single insertion, the insertion pressure provided by the insert cannot force the third flat door 316 to open directly because the position of the third flat door 316 is not changed. Similarly, since the third inclined door 318 and the fourth flat door 317 are overlapped with each other, even if the insertion pressure provided by the insert can force the third inclined door 318 to open in the case of single insertion, the insertion pressure provided by the insert cannot force the fourth flat door 317 to open directly because the position of the fourth flat door 317 is not changed.

In the case of double insertion, i.e. when two inserts simultaneously apply insertion pressure to the third inclined door leaf 318 and the fourth inclined door leaf 319, when the insertion pressure is large enough and overcomes the force of the second elastic member 320, as shown in fig. 1, the third inclined door leaf 318 slides to the left in the first direction, and the fourth inclined door leaf 319 slides to the right in the first direction, so that the third inclined door leaf 318 and the fourth inclined door leaf 319 approach each other; meanwhile, the third planar door 316 is driven by the third inclined door 318 to slide leftward along the first direction, and the fourth planar door 317 is driven by the fourth inclined door 319 to slide rightward along the first direction, so that the third planar door 316 and the fourth planar door 317 are away from each other; this allows the four leaves to open simultaneously and form a passage for an insert to pass through between the third inclined leaf 318 and the fourth planar leaf 317 and between the fourth inclined leaf 319 and the third planar leaf 316, respectively, and two inserts to pass through the two passages, respectively.

In the above embodiment, the protection door formed by the first door and the second door is preferably used for protecting the jack of the three-jack socket; a protective door, which is formed by a third door and a fourth door, is preferably used to protect the jacks of the two-jack socket. Thus, the protection door consisting of the first door, the second door, the third door and the fourth door can protect the jacks of the five-jack socket.

The second base 315 may be a flat plate, an annular structure formed by a circle of side plates, or other structures, and is not limited in this respect.

In a preferred embodiment, the second base 315 has a sliding groove 321 arranged along a first direction; the third planar door leaf 316, the fourth planar door leaf 317, the third inclined door leaf 318 and the fourth inclined door leaf 319 are arranged in the sliding groove 321 and can slide in the sliding groove 321 along the first direction; the bottom of the sliding groove 321 is provided with a two-pole jack 322.

As shown in fig. 1 and fig. 2, the second base 315 includes a bottom plate disposed horizontally, and a circle of side plates disposed on the bottom plate, and a sliding slot 321 is defined by the bottom plate and the side plates. The third planar door leaf 316, the fourth planar door leaf 317, the third inclined door leaf 318 and the fourth inclined door leaf 319 are arranged in the sliding groove 321, so that the above parts are protected, after the safety protection door 30 is installed in the socket, the second base 315 is clamped by the panel and the bottom shell of the socket, and the reliability and the stability of the safety protection door 30 after installation are ensured.

By providing the two-pole jack 322 at the bottom of the sliding slot 321, the live pin and the neutral pin of the two-pin plug can pass through the two-pole jack 322 after passing through the protection door composed of the third door and the fourth door. The two-pole jack 322 may be a through hole formed in the bottom of the slot 321 and sized to allow the live and neutral pins of the two-pin plug to pass therethrough. Preferably, the two-pole jack 322 includes a two-pole live wire jack and a two-pole neutral wire jack disposed at the bottom of the sliding groove 321, and the live wire pin and the neutral pin of the two-pin plug can respectively pass through the two-pole live wire jack and the two-pole neutral wire jack.

The second limiting member is used to control the minimum distance between the third planar door 316 and the fourth planar door 317, and the second limiting member may be a stopper fixed on the second base 315.

In a preferred embodiment, the second limiting member includes two second fixing blocks 323 arranged at intervals and respectively abutted against and engaged with the third planar door leaf 316 and the fourth planar door leaf 317. Under the action of the second elastic member 320, the third flat door 316 abuts against one of the second fixed blocks 323, and the fourth flat door 317 abuts against the other second fixed block 323. Preferably, a three-pole ground wire insertion hole through which a ground wire pin of the three-pin plug passes is provided at the bottom of the sliding groove 321 of the second base 315 and between the two second fixing blocks 323.

The socket of the embodiment of the present invention comprises a panel 10 and a bottom shell 20 connected with the panel 10; the panel 10 is provided with a jack 101; the bottom shell 20 is provided with a plug bush assembly 201; also included is a safety protection door 30; the safety protection door 30 is disposed between the panel 10 and the bottom case 20.

As shown in fig. 5 and 6, the panel 10 is provided with a plug hole 101 for inserting the pins of a three-pin plug or/and a two-pin plug. The bottom shell 20 is provided with a plug bush component 201 which is in conductive connection with the pins of the three-pin plug or/and the two-pin plug; the panel 10 is connected with the bottom case 20 through a snap structure, and a safety protection door 30 is disposed between the panel 10 and the bottom case 20, and the jack 101 on the panel 10 is shielded and protected by the safety protection door 30. When the safety protection door is used, the pins of the plug are inserted into the jacks 101 of the panel 10, so that the safety protection door 30 can be forced to open through the pins of the plug, the pins of the plug are inserted into the plug bush component 201, and the pins of the plug are in conductive connection with the plug bush component 201.

The embodiment of the utility model provides a socket, through setting up safety protection door 30, can prevent that the monopole from inserting the jack, has realized singly inserting safety protection's function. Compared with the prior art, the situation that a user does not insert the pins of the plug absolutely and is blocked can be avoided, and the plug can be smoothly inserted into the socket adopting the safety protection door 30 of the embodiment.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The safety protection door is characterized by comprising a first rotating shaft (301) which is vertically arranged; a first plane door leaf (302), a second plane door leaf (303), a first inclined door leaf (304) and a second inclined door leaf (305) which are rotationally connected with the first rotating shaft (301) are arranged on one side of the first rotating shaft; the first plane door leaf (302) is connected with a first inclined door leaf (304), and the second plane door leaf (303) is connected with a second inclined door leaf (305);

the first elastic member (306) is arranged between the first plane door leaf (302) and the second plane door leaf (303) and drives the first inclined plane door leaf (304) and the second inclined plane door leaf (305) to be away from each other; under the action force provided by the first elastic member (306), the first flat door leaf (302) and the second flat door leaf (303) are respectively abutted against the first limiting member, the second inclined door leaf (305) is positioned right above the first flat door leaf (302), and the first inclined door leaf (304) is positioned right above the second flat door leaf (303).

2. The safety door of claim 1, further comprising a first base (307); the first rotating shaft (301) is connected with the first base (307).

3. The safety protection door according to claim 2, wherein the first base (307) is provided with a first mounting groove (308); the first rotating shaft (301), the first plane door leaf (302), the second plane door leaf (303), the first inclined door leaf (304) and the second inclined door leaf (305) are all arranged in the first mounting groove (308); the bottom of the first mounting groove (308) is provided with a tripolar jack (309).

4. The door according to claim 2 or 3, wherein the first limiting member is a first fixing block (310) connected to the first base (307); the first plane door leaf (302) is provided with a first abutting block (311) which extends towards the direction of the first fixed block (310) and is abutted and matched with the first fixed block (310); the second plane door leaf (303) is provided with a second abutting block (312) which extends towards the direction of the first fixed block (310) and is abutted and matched with the first fixed block (310).

5. The safety protection door of claim 4, wherein the first fixing block (310) is provided with a first clamping groove (313) matched with the first abutting block (311), and the first fixing block (310) is provided with a second clamping groove (314) matched with the second abutting block (312).

6. The safety door according to claim 2 or 3, further comprising a second base (315) connected to the first base (307); a third plane door leaf (316), a fourth plane door leaf (317), a third inclined plane door leaf (318) and a fourth inclined plane door leaf (319) are arranged on the second base (315) in a sliding manner along the first direction; the third flat door leaf (316) is connected to a third inclined door leaf (318), and the fourth flat door leaf (317) is connected to a fourth inclined door leaf (319);

the second elastic element drives the third inclined plane door leaf (318) and the fourth inclined plane door leaf (319) to be away from each other (320); under the action force provided by the second elastic member (320), the third flat door leaf (316) and the fourth flat door leaf (317) are respectively abutted against the second limiting member, the fourth inclined door leaf (319) is positioned right above the third flat door leaf (316), and the third inclined door leaf (318) is positioned right above the fourth flat door leaf (317).

7. The door of claim 6, wherein the second base (315) has a sliding groove (321) formed thereon along a first direction; the third plane door leaf (316), the fourth plane door leaf (317), the third inclined plane door leaf (318) and the fourth inclined plane door leaf (319) are arranged in the sliding groove (321) and can slide in the sliding groove (321) along a first direction; the bottom of the sliding groove (321) is provided with a two-pole jack (322).

8. The door according to claim 6, wherein the second position-limiting element comprises two second fixing blocks (323) spaced apart from each other and respectively engaged with the third flat door leaf (316) and the fourth flat door leaf (317) in an abutting manner.

9. The door of claim 6, wherein the first base (307) and the second base (315) are integrally formed.

10. The socket comprises a panel (10) and a bottom shell (20) connected with the panel (10); the panel (10) is provided with a jack (101); the bottom shell (20) is provided with an insert sleeve assembly (201); -characterized by further comprising a safety protection door (30) according to any one of claims 1 to 9; the safety protection door (30) is arranged between the panel (10) and the bottom shell (20).

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