CN112421284B - Socket capable of preventing insertion of single pole - Google Patents

Abstract

The invention discloses a socket capable of preventing a single pole from being inserted, which comprises a protective door and a base, wherein the protective door comprises a sliding connecting part and two pole piece blocking parts fixedly connected with the sliding connecting part, the pole piece blocking parts are symmetrically arranged along the left side and the right side of the axis of the sliding connecting part, the sliding connecting part is movably matched with the base, and a return spring is arranged between the sliding connecting part and the base; the pole piece blocking part is provided with guide surfaces which are contacted with the three-pole plug and the two-pole plug; and blocking blocks are respectively arranged above and below the base corresponding to the two pole piece blocking parts, and a channel for the protective door to pass through is reserved between the blocking blocks. The invention has the advantages that: the guide surfaces in contact with the three-pole plug and the two-pole plug are respectively arranged at the corresponding positions of the pole piece blocking parts, so that the protective door can be applied to the two-pole socket and also can be applied to the three-pole socket, and the universality of the protective door is realized.

Description

Socket capable of preventing insertion of single pole

Technical Field

The invention relates to a socket capable of preventing insertion of a single pole.

Background

Two-pole plugs mainly comprise a flat plug and a round plug in the market at present, and the flat plug is basically used for replacing the round plug in daily life application. In the future trend, circular insertion can be gradually eliminated, and flat insertion becomes the main structural form of domestic bolts. After the subsequent new national standard cancels the circular insertion, because the widths of the two-pole jack and the three-pole jack are not greatly different, the protective door of the two-pole socket and the three-pole socket is generalized to be possible.

The two-pole socket protective door used in the current market mainly adopts L and N pin drive, but the three-pole socket protective door adopts E pin drive, and the protective door is moved backwards or rightwards by using the E pin usually, so that the single-hole insertion cannot be effectively prevented, and the electric shock danger exists. This risk is well circumvented if the protective door of the three-pole socket is also driven with L, N pins.

If two poles of earth all adopt L, N feet drives with the tripolar shutter, the structure of two kinds of shutters is similar, and two poles of earth shutter in order to practice thrift manufacturing cost after having cancelled the circle and inserting, shutter width can significantly reduce, because the space of installation tripolar shutter is big, the mistake that packs into the tripolar position with two poles of earth shutter in the production installation process is very easy to appear and is adorned the phenomenon, has brought very big inconvenience for production. After the 10A two-pole and three-pole protective door and the 16A three-pole protective door are generalized, the occurrence of the matters can be effectively prevented, the production efficiency is improved, and the material management cost is reduced.

The internal structure of the socket can be divided into a structure with a protective door bracket and a structure without the protective door bracket. At present, the protective door used by the socket without the protective door bracket on the market is various and does not form generalization.

Disclosure of Invention

The invention aims to provide a socket capable of preventing a single pole from being inserted, which can effectively solve the problem that a protection door in the existing socket is not universal.

In order to solve the technical problems, the invention is realized by the following technical scheme: a socket capable of preventing single-pole insertion comprises a protective door, a base and a panel, wherein a placing cavity is formed in the base, the protective door is arranged in the placing cavity, the panel is buckled on the base, the protective door comprises a sliding connecting part and two pole piece blocking parts fixedly connected with the sliding connecting part, the pole piece blocking parts are symmetrically arranged along the left side and the right side of the axis of the sliding connecting part, the sliding connecting part is movably matched with the base, and a reset spring is arranged between the sliding connecting part and the base;

the pole piece blocking part is provided with guide surfaces which are contacted with the three-pole plug and the two-pole plug;

blocking blocks are respectively arranged above and below the base corresponding to the two pole piece blocking parts, and a channel for the protective door to pass through is reserved between the blocking blocks;

when a single pole piece is inserted into contact with the protective door, the protective door deflects along the axis of the sliding connection part, and the stop block abuts against the pole piece stop part to prevent the protective door from sliding; when the two pole pieces are inserted into contact with the protective door at the same time, the pole pieces push the protective door to slide along the axis direction of the sliding connection part.

Preferably, the top surface of pole piece barrier is the pole piece cover face, the spigot includes tripolar plug contact surface and two poles of the earth plug contact surface, the tripolar plug contact surface keeps away from sliding connection portion's side for the pole piece barrier, two poles of the earth plug contact surface are the preceding terminal surface of pole piece barrier, set up the contact surface in the corresponding position of pole piece barrier according to the characteristics of tripolar plug and two poles of the earth plug, when both sides pole piece barrier all contacted with the plug, can will promote the shutter motion, let the position open, make the plug insert.

Preferably, tripolar plug contact surface and pole piece capping surface circular arc transitional coupling, two poles of the earth plug contact surface and pole piece capping surface circular arc transitional coupling, the circular arc transition has certain guide effect, can reduce the assembly precision, even have the deviation slightly also can be with the contact surface that the foot piece direction of plug corresponds.

Preferably, become 60 degrees contained angles between the tripolar plug contact surface of two pole piece stoppers, the foot piece of plug can laminate with the tripolar plug contact surface, is in order in the use, inserts the back many times, and the foot piece of plug can not produce great wearing and tearing to the shutter. If the pin piece of the plug is not attached to the contact piece, the contact surface is easily abraded by the sharp corner of the pin piece for many times, so that the protective door is damaged.

Preferably, the bottom surface of sliding connection portion is the inclined plane of two upwards perks, and two inclined planes set up along sliding connection portion central axis symmetry, and the contained angle between two inclined planes is 170 degrees, thereby guarantees when the monopole inserts, thereby the upset that the shutter can be smooth and easy triggers monopole protect function.

Preferably, the last spout that has opened of sliding connection portion, be equipped with on the base with spout complex pivot, the axis and the sliding connection portion axis of spout are in same vertical plane, through the cooperation of spout and pivot, can realize that the shutter triggers the protect function along the pivot upset when the monopole inserts, can also make the shutter along the pivot endwise slip when bipolar inserts, lets open the position and makes the plug insert the socket.

Preferably, the axis of the reset spring and the axis of the sliding connection part are in the same vertical plane, after the plug is pulled out of the socket, the reset spring can provide axial reset force, and meanwhile, the protective door is prevented from colliding with the blocking block during resetting.

Preferably, the sliding connection part above the sliding groove is provided with a mounting hole for fixing the return spring, and/or the base is provided with a spring fixing column. Through the mounting hole and/or the spring fixing column, the position of the spring is ensured not to be deviated.

Preferably, the socket further comprises an enclosing wall for limiting the moving track of the protective door, the protective door is arranged in the enclosing wall, the moving track and the position of the protective door are controlled through the enclosing wall, the protective door is guaranteed to play a normal role, meanwhile, good sealing can be formed between the enclosing wall and the protective door, and fine objects are prevented from being inserted into the metal workpiece.

Preferably, the surrounding wall is fixed on the base; or the surrounding wall is fixed on a support, and the support is detachably connected to the base.

Compared with the prior art, the invention has the advantages that: through set up the spigot surface with three pole plugs and two poles of the earth plug contact respectively in the corresponding position of pole piece stop part, can be applied to two poles of the earth sockets with the shutter on, also can be applied to three pole sockets on, the commonality of shutter has been realized to this shutter can take place to deflect when receiving unilateral pole piece to insert, will be blockked by the stop block after deflecting, prevents that the shutter from sliding, avoids unilateral pole piece to insert and appear the risk of electrocuteeing. The protective door socket structure can be suitable for 120-type and 86-type sockets and is suitable for being installed and used in most families.

Drawings

FIG. 1 is an exploded view of one form of the present invention of a socket that is resistant to insertion of a single pole;

FIG. 2 is a schematic view of a protection door of a socket for preventing insertion of a single pole of the present invention with a bottom portion thereof facing upward;

FIG. 3 is a perspective view of a protective door in a socket for preventing insertion of a single pole according to the present invention;

FIG. 4 is a schematic view of a single-pole-insertion-proof jack according to the present invention, showing the door deflected after insertion of a single pin into the jack;

FIG. 5 is a schematic view of the position of a blocking tab in a receptacle for preventing insertion of a single pole according to the present invention;

FIG. 6 is a top view of the base of FIG. 1;

FIG. 7 is a top view of the base and protective door of FIG. 1 shown in engagement;

FIG. 8 is an exploded view of an alternative embodiment of a single-pole-insertion-resistant receptacle according to the present invention;

FIG. 9 is a schematic structural view of the stent of FIG. 8;

FIG. 10 is a schematic view of the bracket and protective door of FIG. 8 coupled together;

the device comprises a protective door 1, a base 2, a sliding connection part 3, a pole piece blocking part 4, a return spring 5, a blocking block 6, a pole piece covering surface 7, a three-pole plug contact surface 8, a two-pole plug contact surface 9, a bottom surface 10, a sliding groove 11, a rotating shaft 12, a spring fixing column 13, a surrounding wall 14, a support 15, a single foot piece 19 and a panel 20.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to 7, an embodiment of a socket capable of preventing a single-pole insertion according to the present invention is an embodiment of a socket capable of preventing a single-pole insertion, which includes a protective door 1, a base 2 and a panel 20, the panel 20 and the base 2 are fastened, a cavity is formed between the two to place elements such as a gold workpiece and the protective door, the protective door 1 includes a sliding connection portion 3 and two pole piece blocking portions 4 fixedly connected to the sliding connection portion 3, the pole piece blocking portions 4 are symmetrically disposed along left and right sides of an axis of the sliding connection portion 3, the axis is a vertical axis as shown in fig. 1, the sliding connection portion 3 is movably matched with the base 2, and a return spring 5 is disposed between the sliding connection portion 3 and the base 2;

the pole piece blocking part 4 is provided with guide surfaces which are contacted with a three-pole plug and a two-pole plug;

blocking blocks 6 are respectively arranged above and below the base 2 corresponding to the two pole piece blocking parts 4, and a channel for the protective door 1 to pass through is reserved between the blocking blocks 6;

when a single pole piece is inserted into contact with the protective door 1, the protective door 1 deflects along the axis of the sliding connection part 3, and the stop block 6 abuts against the pole piece stop part 4 to prevent the protective door 1 from sliding; when two pole pieces are simultaneously inserted into contact with the shutter 1, the pole pieces push the shutter 1 to slide in the axial direction of the sliding connection portion 3.

Through set up respectively with the spigot surface of tripolar plug and the contact of two poles of the earth plug in the 4 corresponding positions in pole piece block portion, can be applied to two poles of the earth sockets with shutter 1 promptly, also can be applied to on the tripolar socket, the commonality of shutter 1 has been realized to this shutter 1 can take place to deflect when receiving unilateral pole piece to insert, will be blockked by the stop block 6 after deflecting, prevents that shutter 1 from sliding, avoids unilateral pole piece to insert and appears the risk of electrocuting.

Specifically, to the pole piece block portion 4 of shutter 1, need shield the L utmost point and the N utmost point jack of two hole jacks of 10A, three hole jacks of 10A to and the L utmost point and the N utmost point jack of three hole jacks of 16A need shield, the top surface of pole piece block portion 4 is pole piece covering 7, the spigot includes tripolar plug contact surface 8 and two poles of the earth plug contact surface 9, slide connection portion 3's side is kept away from for pole piece block portion to tripolar plug contact surface 8, two poles of the earth plug contact surface 9 is the preceding terminal surface of pole piece block portion, and pole piece covering 7 will cover as far as possible the gold work piece of the L utmost point and the N utmost point of three hole plugs of 10A, two hole plugs of 10A and three hole plugs of 16A, under the condition that does not have correct plug to insert the socket, prevents to insert object and gold work piece contact, ensures user safety. It is best tripolar plug contact surface 8 and 7 circular arc transitional couplings of pole piece covering surface, two poles of the earth plug contact surface 9 and 7 circular arc transitional couplings of pole piece covering surface, set up under the condition of having deviation a little at installation or socket hole, the contact surface contact that male plug foot piece also can and correspond, and become 60 degrees contained angles between the tripolar plug contact surface 8 of two pole piece blockers 4, just in time with the contained angle of the L utmost point and the N utmost point plug foot piece of three hole plugs of 10A and 16A, let the plug foot piece apply for two pole piece blockers 4 the power the same, prevent that shutter 1 from taking place to deflect and influence shutter 1 and let out the position and insert for the plug.

According to the principle of preventing the misplug of the protective door 1, when the unilateral pole piece blocking part 4 is stressed, the protective door 1 deflects, and the deflected pole piece blocking part 4 touches the blocking block 6 and cannot slide, so that the unilateral force is easily reversed, the bottom surface 10 of the sliding connection part 3 is two inclined surfaces which are tilted upwards, namely the outer edge of the inclined surface is higher than the vertical position of the inclined surface close to the middle of the sliding connection part, the two inclined surfaces are symmetrically arranged along the central axis of the sliding connection part 3, and the included angle between the two inclined surfaces is 170 degrees.

The guard gate 1 both can take place the upset and can slide again, and the best structure is just to open on sliding connection portion 3 has spout 11, be equipped with on the base 2 with spout 11 complex pivot 12, the axis of spout 11 and sliding connection portion 3 axis are in same vertical plane, and the length of pivot 12 will be greater than the length of spout 11 generally, reserve sufficient distance and let guard gate 1 slide and let open the position of golden work piece, and reset spring 5 generally adopts the pressure spring of spiral, and its axis also is in same vertical plane with sliding connection portion 3 axis at best, ensures the elasticity performance maximum function of spring, avoids spring force and sliding connection portion 3 axes to produce the contained angle simultaneously and takes place the deflection when leading to the motion of guard gate 1. The fixing of the spring can adopt that a mounting hole for fixing the reset spring is formed in the sliding connection part 3, and/or a spring fixing column 13 is arranged on the base 2, and the relative position of the reset spring is fixed through the mounting hole or the spring fixing column 13, so that the spring deviation is avoided.

The motion trail of the protection door 1 is limited by the rotating shaft 12, sometimes, deviation may still occur, in order to limit the motion trail of the protection door 1 to move along a straight line, an enclosing wall 14 may be further arranged in the socket, the protection door 1 is arranged in the enclosing wall 14, the shape of the enclosing wall 14 may be determined according to the motion trail of the protection door 1 as long as the protection door 1 is ensured to move along a straight line, after the enclosing wall 14 is arranged, the blocking block 6 and the spring fixing column 13 may both be fixed on the enclosing wall 14, the enclosing wall 14 may be directly fixed on the base 2 and integrally arranged with the base 2, as shown in fig. 8, 9 and 10, the enclosing wall 14 may also be fixed on the support 15, the support 15 may be detachably connected with the base 2 or clamped on the base 2, and the protection door 1 is arranged in the enclosing wall 14.

As shown in fig. 4, when a single pin 19 is inserted into the jack of the socket, the single pin 19 touches the pole-piece blocking portion 4, due to the unilateral stress of the pole-piece blocking portion 4, the protective door 1 deflects along the axis of the rotating shaft 12, the two pole-piece blocking portions 4 touch the blocking block 6, the blocking block 6 prevents the protective door 1 from sliding along the axis of the rotating shaft 12, so that the protective door 1 cannot give way, the inserted single-pole piece cannot touch the metal workpiece, and the safety of the user is protected. When the L utmost point foot piece and the N utmost point foot piece at the socket all insert the socket, two pole piece blocking part 4 atresss are balanced on the shutter 1, the deflection will not take place for shutter 1, simultaneously because the foot piece takes effect with the spigot surface that corresponds, will promote shutter 1 and slide along the 12 axis directions of pivot, shutter 1 will pass through the passageway between the stopper 6, thereby the position of stepping down, make the L utmost point foot piece and the N utmost point foot piece of socket insert in the gold work piece that corresponds, conduction current. This device simple structure can adapt to the socket of two hole plugs of 10A and three hole plugs, 16A three hole plugs, can not produce the problem of mistake dress when the equipment socket, also reduces material management simultaneously, improves production efficiency.

The above description is only an embodiment of the present invention, but the technical features of the present invention are not limited thereto, and any changes or modifications within the technical field of the present invention by those skilled in the art are covered by the claims of the present invention.

Claims (8)

1. The utility model provides a can prevent monopole male socket, includes shutter (1), base (2) and panel (20), is equipped with in base (2) and places the chamber, and shutter (1) sets up and is placing the intracavity, panel (20) lock is on base (2), its characterized in that: the protective door (1) comprises a sliding connection part (3) and two pole piece blocking parts (4) fixedly connected with the sliding connection part (3), the pole piece blocking parts (4) are symmetrically arranged along the left side and the right side of the axis of the sliding connection part (3), the sliding connection part (3) is movably matched with the base (2), and a reset spring (5) is arranged between the sliding connection part (3) and the base (2);

the pole piece blocking part (4) is provided with guide surfaces which are contacted with a three-pole plug and a two-pole plug;

blocking blocks (6) are respectively arranged above and below the base (2) corresponding to the two pole piece blocking parts (4), and a channel for the protective door (1) to pass through is reserved between the blocking blocks (6);

when a single pole piece is inserted into contact with the protective door (1), the protective door (1) deflects along the axis of the sliding connection part (3), and the stop block (6) abuts against the pole piece stop part (4) to prevent the protective door (1) from sliding; when the two pole pieces are inserted into the protective door (1) to be contacted, the pole pieces push the protective door (1) to slide along the axial direction of the sliding connection part (3);

the top surface of the pole piece blocking part (4) is a pole piece covering surface (7), the guide surface comprises a three-pole plug contact surface (8) and a two-pole plug contact surface (9), the three-pole plug contact surface (8) is the side surface of the pole piece blocking part far away from the sliding connection part (3), and the two-pole plug contact surface (9) is the front end surface of the pole piece blocking part;

tripolar plug contact surface (8) and pole piece covering surface (7) circular arc transitional coupling, two poles of the earth plug contact surface (9) and pole piece covering surface (7) circular arc transitional coupling.

2. A socket against insertion of a single pole as claimed in claim 1, wherein: an included angle of 60 degrees is formed between the contact surfaces (8) of the three-pole plugs of the two pole piece blocking parts (4).

3. A socket against insertion of a single pole as claimed in claim 1, wherein: the bottom surface (10) of the sliding connection part (3) is two inclined surfaces which are tilted upwards, the two inclined surfaces are symmetrically arranged along the central axis of the sliding connection part (3), and the included angle between the two inclined surfaces is 170 degrees.

4. A socket against insertion of a single pole as claimed in claim 1, wherein: sliding connection portion (3) are gone up to open has spout (11), be equipped with on base (2) with spout (11) complex pivot (12), the axis and sliding connection portion (3) axis of spout (11) are in same vertical plane.

5. A socket against insertion of a single pole as claimed in claim 4, wherein: the axis of the reset spring (5) and the axis of the sliding connection part (3) are in the same vertical plane.

6. A socket against insertion of a single pole as claimed in claim 5, wherein: the sliding connection part (3) above the sliding groove (11) is provided with a mounting hole for fixing a return spring, and/or the base (2) is provided with a spring fixing column (13).

7. A socket against insertion of a single pole as claimed in claim 1, wherein: the socket also comprises a surrounding wall (14) for limiting the moving track of the protective door (1), and the protective door (1) is arranged in the surrounding wall (14).

8. A socket against insertion of a single pole as claimed in claim 7, wherein: the surrounding wall (14) is fixed on the base (2); or the surrounding wall (14) is fixed on a bracket (15), and the bracket (15) is detachably connected on the base (2).

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