CN104577432A - Socket protecting gate reset by compressed spring - Google Patents

Abstract

The invention relates to a socket protecting gate, in particular to a socket protecting gate reset by a compressed spring. The socket protecting gate comprises a casing and a protecting gate unit, wherein a plurality of jacks are formed in the casing, the protecting gate unit comprises a protecting gate, the compressed spring, a first stop dog and a second stop dog, the protecting gate is provided with a first driving slope and a second driving slope which are tilted in the same direction and block under the jacks, the transverse movement of the protecting gate is blocked by the first stop dog when only the first driving slope is pressed down, the transverse movement of the protecting gate is blocked by the second stop dog when only the second driving slope is pressed down, the tilting direction of the first driving slope is identical to the distribution direction of two jacks in the same pair of jacks, a support ridge is arranged on the lower end surface of the protecting gate, the extension direction of the support ridge is perpendicular to the opening direction of the protecting gate, and the protecting gate is rotatably connected in the casing in a sliding way through the support ridge. The socket protecting gate has a monopole plugging preventing function and the advantages of high monopole plugging preventing response speed and great reliability and solves the problem that the existing socket protecting gate reset by the compressed spring cannot prevent a monopole from being plugged in.

Description

Socket protection door with spring return

technical field

The invention relates to a socket protection door, in particular to a socket protection door reset by a pressure spring.

Background technique

The socket is an electrical device that provides a power interface for electrical appliances. It is also an electrical accessory that is used more in residential electrical design. It has a very close relationship with people's lives. In order to improve the electrical safety of the socket, a protective door, also called a safety door, is usually set in the socket. The protective door is set above the plug sleeve of the socket. When the plug is inserted, the protective door is driven to open. After the plug is pulled out, the protective door automatically resets to block the top of the plug sleeve under the action of the return spring, so that objects cannot enter the plug sleeve by mistake, thereby Play the role of preventing electric shock. Some of the protection door return springs are compression springs and some are torsion springs. In Chinese patent application number 2014100367769, published on April 30, 2014, a patent document titled "A Multifunctional Socket Safety Protection Door" discloses a socket protection door that is reset by a compression spring. The socket protective door in this patent includes a shell and a protective door unit. The shell includes a panel, and the panel is provided with several pairs of jacks. Two jacks in the same pair of jacks are used for the L pole pin and the N pole in the same plug. The latch is inserted, and the protection door unit includes a protection door located in the housing with a first driving slope and a second driving slope with the same inclination direction, and a compression spring for resetting the protection door. The first driving slope and the second driving slope are the same The two jacks in the jacks are aligned one by one, and the stretching direction of the stage clip is the same as the sliding direction of the protection door. The protection door in this patent document has the following disadvantages: it cannot prevent the probe from being inserted through the socket and contact live parts such as sockets, that is, it cannot prevent single-pole insertion.

Contents of the invention

The invention provides an anti-single-pole insertion protection door with fast response speed and good reliability and the anti-single-pole insertion function of the spring reset socket protection door, which solves the problem that the existing socket protection door of the compression spring reset cannot prevent the single-pole The problem of poor security caused by insertion.

The second object of the present invention is to further provide a socket protection door with a compact layout, so as to improve the convenience of using the socket protection door with a compact layout.

The third object of the present invention is to further provide a spring-return socket protection door in which a plurality of protection door units share a pressure spring, so as to reduce the number of parts of the socket with multiple protection doors.

The above technical problems are solved by the following technical solutions: a spring-reset socket protective door, including a housing and a protective door unit, the housing includes a panel, and the panel is provided with several pairs of jacks, the same pair of jacks The two jacks in the same plug are used to insert the L-pole pin and the N-pole pin in the same plug, and the protection door unit includes a protection door in the housing that is provided with a first driving slope and a second driving slope that are inclined in the same direction. The door, and the pressure spring for resetting the protection door, the first driving slope and the second driving slope are aligned with the two jacks in the same pair of jacks one by one, and the expansion and contraction direction of the pressure spring is the same as that of the protection The sliding direction of the doors is the same, and the protective door unit further includes a first stopper that blocks the translation of the protective door when only the first driving slope is pressed down and a second stopper that blocks the translational movement of the protective door when only the second driving slope is pressed down , the first stopper and the second stopper are distributed along the up and down direction and are both arranged on the housing, a protective door opening sliding channel is formed between the first stopper and the second stopper, and the first drive The inclined direction of the slope is the same as the distribution direction of the two jacks in the same pair of jacks. The distribution direction is the same, the lower end surface of the protective door is provided with a supporting ridge, the extending direction of the supporting ridge is perpendicular to the distribution direction of the two jacks in the same pair of jacks, and the upper end of the protective door slides through In the sliding groove, the lower end abuts against the sliding surface through the supporting ridge. When in use, the two jacks in a pair of jacks are aligned with the L-pole socket and the N-pole socket in a socket unit, and the protective door is isolated between the socket and the socket. When the two pins of the plug are inserted into a pair of jacks at the same time, both the first driving slope and the second driving slope are pressed down. At this time, the protective door is supported by the supporting ridge and slides on the sliding surface to produce translation (translation) The distribution direction of the two jacks in the same pair of jacks is the same), the protective door passes through the protective door to open the sliding channel and loses the shielding effect on the jack, the plug can be inserted, and when the plug is pulled out, it will be under the action of the compression spring Automatic reset. Two stoppers are set, when the monopole is inserted, the protective door rotates around the support ridge and abuts against one of the first stopper and the second stopper so that the translation action cannot be completed, that is, it cannot The door is opened, thereby achieving anti-probe insertion with a simple structural fit. Since the inclination direction of the driving slope (that is, the opening direction of the protective door) is perpendicular to the axial direction of the rotating shaft when the protective door rotates, when driven by one side, the protective door can quickly rotate and abut against the stopper without There is a phenomenon that the response is not timely and the stopper is crossed (that is, the phenomenon that the single pole can also be opened when inserted), so the reliability is good.

Preferably, the distribution direction of the protective door and the pressure spring is perpendicular to the sliding direction of the protective door. The layout is compact, and the second invention purpose is realized.

Preferably, there are two pairs of jacks, the distribution direction of the two pairs of jacks is perpendicular to the distribution direction of the two jacks in the same pair of jacks, there are two protective door units, and the two protective door units share a pressure spring, the opening directions of the two protective door units are opposite, and the protective door is provided with an extruding block, and the extruding block in the two protective door units is connected to both ends of the compression spring. Realized the 3rd invention object.

Preferably, the pressure spring is located between the protection doors of the two protection door units. The compactness of the layout and the convenience in assembly can be further improved.

Preferably, the protection door unit further includes a limit block for preventing the protection door from opening in a direction away from the first stopper, and the limit block is connected to the housing. When the gap between the protective door and the housing is large, the protective door cannot be opened by inserting a probe through the gap to reversely toggle the protective door, and can meet high protection performance with low matching precision.

Preferably, the protective door unit further includes a baffle plate that prevents the protective door from opening along the distribution direction perpendicular to the two jacks in the same pair of jacks, and the protective door is provided with There are limiting holes extending in the distribution direction of the two sockets, and the baffle is passed through the limiting holes. When the gap between the protective door and the housing is large, it is not possible to insert a probe through the gap to move the protective door in a direction perpendicular to the movement of the protective door to cause the protective door to open, which is more secure.

Preferably, the housing further includes a baffle, a split structure between the baffle and the panel, the baffle is provided with a pair of through holes, and the two through holes in the pair of through holes correspond to the same Aligning two of the jacks, the protective door unit is located between the panel and the bulkhead. It is convenient to fix the protection door and the pressure spring, which improves the convenience of production.

Preferably, one of the first stopper and the second stopper is arranged on the panel, and the other is arranged on the partition. Easy to make.

Preferably, the supporting surface of the supporting ridge is an arc surface, and the supporting ridge is in line contact with the sliding surface. The protection door has good stability when swinging, and there will be no jumping phenomenon during the rapid swing, which will cause the electrical connection in the socket to loosen and the phenomenon of crossing the stopper (if it crosses the stopper, it means it can be opened).

The present invention has the following advantages: two stoppers distributed up and down are provided, and the translation direction of the protection door is perpendicular to the axial direction of the rotation axis when the protection door rotates, so that when the protection door is driven by one side, the protection door can rotate quickly and When it abuts against the block, there will be no phenomenon of overstepping the block due to untimely response, and the reliability is good.

Description of drawings

Fig. 1 is a schematic diagram of the three-dimensional structure of the present invention after removing the separator.

Fig. 2 is a schematic top view of the present invention.

Fig. 3 is a schematic cross-sectional view along line A-A of Fig. 2 .

Fig. 4 is a schematic diagram of the state of inserting the plug when the present invention is used.

Fig. 5 is a schematic diagram of a state in which a probe is inserted from one of a pair of jacks when the present invention is used.

Fig. 6 is a schematic diagram of a state in which a probe is inserted from another jack in a pair of jacks when the present invention is used.

In the figure: housing 1, panel 11, chute 12, socket 13, via hole 14, sliding surface 15, partition 16, protection door unit 2, protection door 21, limit hole 211, avoidance hole 212, support ridge 213, extrusion block 214, first driving slope 215, second driving slope 216, compression spring 22, second stopper 23, limiter 24, first stopper 25, baffle plate 26, protective door opening sliding channel 3 , socket 4, plug 5, latch 51, probe 6.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Referring to FIG. 1 , a spring reset socket protection door includes a panel 11 . Two slide grooves 12 are provided on the lower surface of the panel 11 . The chute 12 extends in the left-right direction. Panel 11 is made of plastic.

Two protective door units 2 are arranged inside the lower side of the panel 11 (ie, the upper side in the figure). Two protection door units 2 are distributed along the front and rear directions. The protective door unit 2 includes a protective door 21 , a compression spring 22 , a second stopper 23 and a limiter 24 . The upper end of the protection door 21 slides through the sliding groove 12 . The two protective door units 2 are reversely installed in the panel 11, so the opening directions of the two protective door units are opposite (specifically, one protective door is opened by moving to the right, and the other is opened by moving to the left. ). The protection door 21 is provided with a limiting hole 211 and an escape hole 212 . The limiting hole 211 and the escape hole 212 are connected as a whole. A support ridge 213 is provided on the lower end surface of the protective door 21 . The support ridge 213 extends in the front-rear direction. The protection door 21 is provided with an extrusion block 214 . The compression spring 22 extends in the left-right direction (that is, expands and contracts in the left-right direction). The two protective door units 2 share the same compression spring 22 . The compression spring 22 is located between the protective doors 21 in the two protective door units 2 . The extruding blocks 214 in the two protective door units 2 are connected to the left and right ends of the compression spring 22 . Both the second stopper 23 and the limiter 24 are connected to the inner surface of the panel 11 . The second stopper 23 and the limiter 24 are distributed at the left and right ends of the protection door 21 .

Referring to FIG. 2 , the panel 11 is provided with two pairs of jacks 13 . Two pairs of jacks 13 are distributed along the front and rear directions. The two jacks of the same pair are arranged in the left-right direction. One pair of jacks in the two pairs of jacks 13 constitutes the L pole jack and the N pole jack in the two-pole socket, and the other pair of jacks constitutes the L pole jack and the N pole jack in the three-level socket (of course through It is also possible to change the position and hole type to form the L-pole jack and the N-pole jack in another two-pole socket). The two protective doors 22 (see FIG. 1 ) are correspondingly covered under the two pairs of jacks 13 .

Referring to FIG. 3 , a partition 16 is also provided below the panel 11 . The partition 16 is made of plastic. The partition 16 and the panel 11 enclose the housing 1 . Between the partition plate 16 and the panel 11 is a split structure. The partition plate 16 and the panel 11 are connected together by buckles. The partition 16 is provided with two pairs of via holes 14 (only one pair can be seen in the figure). The two holes in the pair of holes 14 are aligned with the two holes in the pair of holes 13 in a one-to-one correspondence. The upper surface of the partition plate 16 is provided with a sliding surface 15 . The sliding surface 15 is a flat surface.

The protective door unit 2 is located between the partition 16 and the panel 11 . The protective door unit 2 also includes a first block 25 and a baffle 26 . The first block 25 and the baffle 26 are disposed on the upper surface of the partition 12 . The protective door opening sliding channel 3 is formed between the first stopper 25 and the second stopper 23 . The right end of the upper surface of the protective door 21 is provided with a first driving slope 215 , and the left end is provided with a second driving slope 216 . The first driving slope 215 and the second driving slope 216 are aligned with the two insertion holes in the same pair of insertion holes 13 in a one-to-one correspondence. The inclination directions of the first driving slope 215 and the second driving slope 216 are the same. The first driving slope 215 is inclined such that the upper end faces left. The lower end of the second driving slope 216 is aligned with the escape hole 212 .

The baffle plate 26 passes through the limiting hole 211 . The lower end of the protective door 21 abuts against the sliding surface 15 through the supporting ridge 213 . The supporting surface of the supporting ridge 213, that is, the lower side in the figure, is an arc surface. The support ridge 213 is in line contact with the sliding surface 15 .

Due to the blocking effect of the limit block 24, the protection door 21 cannot be opened to the right by prying the protection door 21 in a direction away from the opening sliding channel 3 of the protection door (ie, the direction to the right in the figure).

Referring to Fig. 4, when in use, the panel 11 constitutes the panel of the socket. The two through holes in the pair of through holes 14 are located above the two sockets 4 in the same socket in one-to-one correspondence. One of the two sockets 4 is an L pole socket, and the other is an N socket. When the two pins 51 of the same plug 5 (one of the two pins 51 is an L-pole pin and the other is an N-pole pin) are inserted into two jacks in a pair of jacks 13 in a one-to-one correspondence, The two bolts 51 drive the first driving slope 215 and the second driving slope 216 in one-to-one correspondence. 4, the two pins 51 continue to be inserted down and pass through the two through holes in the pair of through holes 14 one by one and inserted into the two sockets 4. During the translation process of the protection door 21 , the compression spring 22 (see FIG. 1 ) is compressed by the extrusion block 214 (see FIG. 1 ) to store energy in the compression spring. When the plug 5 is pulled out, the compression spring releases energy to drive the protective door 21 through the sliding channel 3 to reset to below the two jacks that are blocked in the pair of jacks 13 .

5, when the probe 6 is inserted from one of the pair of sockets 13, the probe 6 drives the first driving slope 215 so that the protective door 21 rotates clockwise with the support ridge 213 as the axis and also to the left. Sliding (the pressure spring stores energy during this process), the result of the rotation of the protection door 21 is that the left end of the protection door 21 abuts against the second stopper 23 and cannot enter the opening sliding channel 3 of the protection door, that is, the protection door 21 Can not be opened, so the protection door is still cut off between the socket 4 and the jack 13, so the probe 6 cannot be inserted into the socket 4. When the probe 6 is pulled out, the compression spring 22 (see FIG. 1 ) releases energy to drive the protection door 21 to reset.

Referring to Fig. 6, when the probe 6 is inserted from another jack in the pair of jacks 13, the probe 6 drives the second driving slope 216 so that the protection door 21 rotates counterclockwise with the support ridge 213 as the axis and also rotates Slide to the left (the pressure spring stores energy during this process), and the result of the rotation of the protection door 21 is that the left end of the protection door 21 abuts against the first stopper 25 and cannot enter the opening sliding channel 3 of the protection door, that is, the protection door 21 cannot be opened, so the protective door is still cut off between the socket 4 and the jack 13, so the probe 6 cannot be inserted into the socket 4. When the probe 6 is pulled out, the compression spring 22 (see FIG. 1 ) releases energy to drive the protection door 21 to reset.

Claims (9)

1. A spring reset socket protection door, comprising a housing and a protection door unit, the housing includes a panel, the panel is provided with several pairs of jacks, and two jacks in the same pair of jacks are used for the same The L-pole and N-pole pins in the plug are inserted, and the protective door unit includes a protective door located in the housing provided with a first driving slope and a second driving slope with the same inclination direction, and a pressure button for resetting the protective door. Spring, the first driving slope and the second driving slope are aligned with the two sockets in the same pair of sockets one by one, the expansion and contraction direction of the compression spring is the same as the sliding direction of the protection door, and the feature is that , the protective door unit further includes a first stopper that blocks the translation of the protective door when only the first driving slope is pressed down and a second stopper that blocks the translational movement of the protective door when only the second driving slope is pressed down, the first The stopper and the second stopper are distributed along the up and down direction and are both arranged on the housing. A protective door opening sliding channel is formed between the first stopper and the second stopper. The inclined direction of the first driving slope is the same as The distribution direction of the two jacks in the same pair of jacks is the same, and the housing is provided with a slide groove and a sliding surface, and the extending direction of the slide groove is the same as the distribution direction of the two jacks in the same pair of jacks, The lower end surface of the protection door is provided with a support ridge, the extension direction of the support ridge is perpendicular to the distribution direction of the two sockets in the same pair of sockets, and the upper end of the protection door slides through the chute The inner and lower ends abut against the sliding surface through the supporting ridge. 2 . The protection door of the socket that is reset by the pressure spring according to claim 1 , wherein the distribution direction of the protection door and the pressure spring is perpendicular to the sliding direction of the protection door. 3 . 3. The socket protection door reset by the compression spring according to claim 2, wherein there are two pairs of the jacks, and the distribution direction of the two pairs of jacks is perpendicular to the distribution direction of the two jacks in the same pair of jacks , there are two protective door units, the two protective door units share a compression spring, the opening directions of the two protective door units are opposite, the protective door is provided with an extruding block, and the extruding blocks in the two protective door units Blocks are attached at both ends of the compression spring. 4 . The socket protection door with a pressure spring reset according to claim 3 , wherein the pressure spring is located between the protection doors of the two protection door units. 5. According to claim 1 or 2 or 3 or 4, the socket protective door with spring reset is characterized in that, the protective door unit further includes a device for preventing the protective door from opening in a direction away from the first stopper. A limit block, the limit block is connected to the housing. 6. According to claim 1 or 2 or 3 or 4, the socket protection door with spring return is characterized in that, the protection door unit also includes a function to prevent the protection door from being perpendicular to the two sockets in the same pair of sockets. The baffle is opened in the distribution direction of the holes, and the protective door is provided with limiting holes extending along the distribution direction of the two sockets in the same pair of sockets, and the baffle is passed through the limiting holes. 7. According to claim 1 or 2 or 3 or 4, the socket protection door reset by the pressure spring is characterized in that, the housing also includes a partition, and the partition is a split structure between the partition and the panel, and the partition The board is provided with a pair of through holes, and two of the through holes in the pair of through holes are aligned with the two jack holes in the pair of jack holes in a one-to-one correspondence, and the protection door unit is located between the panel and the partition board. 8. According to claim 7, the socket protection door reset by the compression spring is characterized in that, for both the first stopper and the second stopper, one is arranged on the panel, and the other is arranged on the partition plate. 9. According to claim 1 or 2 or 3 or 4, the socket protection door reset by the pressure spring is characterized in that, the support surface of the support ridge is an arc surface, and the support ridge and the sliding surface are in line contact .