CN219677609U - Single-plug-prevention three-plug safety door mechanism - Google Patents

Abstract

The utility model relates to an anti-single-insertion three-insertion safety door mechanism, which comprises a plugging plate, wherein the plugging plate is connected between a middle cover plate and a structural seat in a sliding manner, and a reset piece is arranged between the plugging plate and the middle cover plate; the structure seat is internally provided with a live wire conductive plug-in unit, a zero wire conductive plug-in unit and a ground wire conductive plug-in unit, and the middle cover plate is correspondingly provided with a live wire plug-in hole, a zero wire plug-in hole and a ground wire plug-in sliding hole; the plugging plate slides along the sliding direction of the ground wire plugging sliding hole; when no plug is inserted, the plugging plate shields the live wire plug hole and the zero wire plug hole; a first supporting step is arranged on the structure seat along the sliding direction of the plugging plate, and the first supporting step is positioned between the live wire conductive plug-in unit and the zero wire conductive plug-in unit; the structure seat is provided with second supporting steps on two side edges of the plugging plate, and the second supporting steps are positioned on one side of the live wire conductive plug-in unit and one side of the zero wire conductive plug-in unit, which are opposite. The utility model has the advantage of improving the safety performance of the three-plug socket.

Description

Single-plug-prevention three-plug safety door mechanism

Technical Field

The utility model relates to the field of socket safety doors, in particular to a single-plug-prevention three-plug safety door mechanism.

Background

The three-plug socket comprises a base and an upper cover, a structural seat is arranged in the base, a middle cover plate is arranged on one side, close to the upper cover, of the structural seat, a conductive plug-in component is arranged on the structural seat, and corresponding plug-in holes are respectively formed in the positions, corresponding to the live wire conductive plug-in component, the zero wire conductive plug-in component and the ground wire conductive plug-in component, of the middle cover plate and the upper cover, and are respectively a live wire plug-in hole, a zero wire plug-in hole and a ground wire plug-in hole.

In order to improve the safety of the socket, a safety door is generally installed inside the socket, the safety door in the prior art is arranged in the socket in a sliding mode, and a spring reset piece is arranged, so that the safety door is convenient to reset. The emergency exit initial position shelters from live wire spliced eye and zero line spliced eye, is equipped with a guide block on the emergency exit, because the height of three ground wire plugs of inserting the plug is higher, consequently, after three plug inserts the socket, can contact the guide block earlier, and under the effect of guide block, the emergency exit removes, reset spring compresses to make the emergency exit shelter from live wire spliced eye and zero line spliced eye, make things convenient for the grafting of three plug.

However, in the process of using the safety door, on the structure seat, due to the existence of the conductive plug-in, the safety door is left at the side far away from the upper cover and is supported at the position with only the middle part, and due to the fact that the safety door is of a relatively long plate-shaped structure, after the plug-in with single plug-in is inserted into the live wire plug-in hole or the zero line plug-in hole, the safety door is easy to deform and incline, and the safety performance of preventing single plug-in is reduced.

Disclosure of Invention

In order to improve the safety performance of the three-plug socket, the utility model provides a single-plug-prevention three-plug safety door mechanism.

The utility model provides a single-plug-prevention three-plug safety door mechanism, which adopts the following technical scheme:

the single-plug-prevention three-plug safety door mechanism comprises a plugging plate, wherein the plugging plate is connected between a middle cover plate and a structural seat in a sliding manner, and a reset piece is arranged between the plugging plate and the middle cover plate; the structure seat is internally provided with a live wire conductive plug-in unit, a zero wire conductive plug-in unit and a ground wire conductive plug-in unit, and the middle cover plate is correspondingly provided with a live wire plug-in hole, a zero wire plug-in hole and a ground wire plug-in sliding hole; the plugging plate slides along the sliding direction of the ground wire plugging sliding hole; when no plug is inserted, the plugging plate shields the live wire plug hole and the zero line plug hole; a first supporting step is arranged on the structure seat along the sliding direction of the plugging plate, and the first supporting step is positioned between the live wire conductive plug-in unit and the zero wire conductive plug-in unit; the structure seat is provided with second supporting steps on two side edges of the plugging plate, the second supporting steps are located on one side of the live wire conductive plug-in unit and one side of the zero wire conductive plug-in unit, which are opposite to each other, and the plugging plate is provided with a yielding hole for the insertion of a plug at a position corresponding to the ground wire plugging sliding hole.

Through adopting above-mentioned technical scheme, increase to be equipped with the second at the side that the structure seat corresponds the shutoff board and support the step, combine the effect of first supporting the step for the shutoff board receives single back of inserting, after the live wire spliced eye or the zero line spliced eye were inserted to the plug-in components, the shutoff board is difficult to the slope, thereby is favorable to guaranteeing the stability of shutoff board, improves the security of emergency exit mechanism.

Optionally, a third supporting step extends from one side of the middle cover plate, which is close to the structural seat, and is located at one side of the plugging plate, which is far away from the ground wire conductive plug, and the plugging plate is lapped on the third supporting step when the three-plug is not inserted; after the three-plug is inserted, the plugging plate is far away from the third supporting step.

Through adopting above-mentioned technical scheme, the third supports the step and is favorable to further improving the stability to the shutoff board support, especially when the shutoff board is in the state of not sliding, in order to prevent singly inserting, its structural stability's requirement is higher, consequently add the third and support the step and be favorable to further improving the security of emergency exit mechanism.

Optionally, one end of the third supporting step far away from the middle cover plate is in press connection with the live wire conductive plug-in unit and the zero wire conductive plug-in unit.

Through adopting above-mentioned technical scheme, utilize the third to support the step and realize the crimping spacing to live wire conductive insert and the conductive insert of zero line, and when the shutoff board did not slide, the shutoff board crimping was in the third and is supported the step, is favorable to further guaranteeing the spacing stability of the conductive insert of live wire and the conductive insert of zero line.

Optionally, be provided with first embedded portion and the second embedded portion that is used for placing different specification electrically conductive plug-ins on the structure seat, first embedded portion with the direction of distribution of second embedded portion is followed the slip direction setting of shutoff board, and first embedded portion is located and keep away from one side of ground wire grafting sliding hole, the shutoff board is kept away from the projection of the edge orientation of ground wire grafting sliding hole one side structure seat is located in the first embedded portion.

Through adopting above-mentioned technical scheme, when using the electrically conductive plug-in components of different specifications, can utilize the shutoff board for electrically conductive plug-in components's position, judge the specification of socket fast.

Optionally, the reset assembly includes a reset spring, one end of the reset spring is abutted to the plugging plate, and the other end is abutted to the middle cover plate.

By adopting the technical scheme, the reset of the sliding connection between the plugging plate and the middle cover plate is realized by using the reset spring.

Optionally, an abutting plate is arranged on the middle cover plate, a first abutting block is arranged on the abutting plate, and one end of the return spring is in interference fit with the first abutting block; the shutoff board is close to one side of well apron is provided with the expansion tank, reset spring telescopic connection in the expansion tank, just be provided with the second butt piece in the expansion tank, reset spring's the other end interference fit in the second butt piece.

Through adopting above-mentioned technical scheme, first butt piece and second butt piece make reset spring's both ends obtain stable connection.

Optionally, the abutting plate is slidingly connected in the telescopic groove.

Through adopting above-mentioned technical scheme, the butt board is favorable to playing the spacing effect of direction to the shutoff board slip.

Optionally, a guide block is arranged on the plugging plate at a position of the ground wire plugging sliding hole away from the live wire plugging hole and the neutral wire plugging hole, and a guide surface on the guide block faces the ground wire plugging sliding hole; the guide block is connected in the ground wire inserting sliding hole in a sliding mode.

Through adopting above-mentioned technical scheme, the guide block makes things convenient for the plug to promote the removal of shutoff board after inserting, and the guide block is favorable to the displacement of shutoff board.

Optionally, the shutoff board is close to one side of well apron and keep away from one side of guide block is provided with the slider, the slider slide connect in the ground wire grafting sliding hole.

Through adopting above-mentioned technical scheme, the slider is favorable to further playing the effect of direction, improves the stability that the shutoff board slided.

Optionally, the reset piece is provided with two groups, and two groups of reset pieces are symmetrically distributed on two sides of the ground wire plug-in sliding hole.

By adopting the technical scheme, symmetrically distributed reset pieces are beneficial to improving the sliding stability of the plugging plate.

In summary, the present utility model includes at least one of the following beneficial technical effects: by additionally arranging the second supporting step and the third supporting step, the plugging plate is not easy to deform when being plugged singly, so that single plugging is prevented, and the safety is improved.

Drawings

Fig. 1 is a schematic view of the structure of a safety door mechanism application according to an embodiment of the present utility model.

Fig. 2 is an exploded schematic view of a safety door mechanism according to an embodiment of the present utility model.

Fig. 3 is a further schematic exploded view of a safety door mechanism according to an embodiment of the present utility model.

Fig. 4 is a schematic view of the structure of the back side of the middle cover plate according to the embodiment of the present utility model.

Fig. 5 is a schematic structural view of the plugging plate in the third supporting platform according to the embodiment of the present utility model.

Fig. 6 is a cross-sectional view of an embodiment of the present utility model.

Fig. 7 is an exploded view of an embodiment of the present utility model, primarily for use in displaying a structural seat.

Fig. 8 is a structural view showing a positional relationship between an edge of a plugging plate and a first embedded portion in an embodiment of the present utility model.

Reference numerals: 1. a plugging plate; 2. a middle cover plate; 3. a structural seat; 4. a live wire conductive plug-in; 5. a zero line conductive insert; 6. a ground conductive insert; 7. a live wire plug hole; 8. a zero line plug hole; 9. the ground wire is inserted into the sliding hole; 10. a first support step; 11. a second support step; 12. a third support step; 13. an abutting plate; 14. a first abutment block; 15. a telescopic slot; 16. a second abutment block; 17. a guide block; 18. a sliding block; 19. a first embedding part; 20. a second embedding part; 21. a return spring; 22. and giving way holes.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the inventive concepts. As part of this specification, some of the drawings of the present disclosure represent structures and devices in block diagram form in order to avoid obscuring the principles of the disclosure. In the interest of clarity, not all features of an actual implementation are necessarily described. Furthermore, the language used in the present disclosure has been principally selected for readability and instructional purposes, and may not have been selected to delineate or circumscribe the inventive subject matter, resort to the requisite claims to determine such inventive subject matter. Reference in the present disclosure to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment, and multiple references to "one embodiment" or "an embodiment" should not be understood as necessarily all referring to the same embodiment.

The terms "a," "an," and "the" are not intended to refer to a singular entity, but rather include the general class of which a particular example may be used for illustration, unless clearly defined. Thus, the use of the terms "a" or "an" may mean any number of at least one, including "one", "one or more", "at least one", and "one or more than one". The term "or" means any of the alternatives and any combination of alternatives, including all alternatives, unless alternatives are explicitly indicated as mutually exclusive. The phrase "at least one of" when combined with a list of items refers to a single item in the list or any combination of items in the list. The phrase does not require all of the listed items unless specifically so defined.

The embodiment of the utility model discloses a single-plug-prevention three-plug safety door mechanism. Referring to fig. 1-3, a single-plug-proof three-plug safety door mechanism comprises a plugging plate 1, wherein the plugging plate 1 is connected between a middle cover plate 2 and a structural seat 3 in a sliding manner. The structure seat 3 is internally provided with a live wire conductive plug-in unit 4, a zero line conductive plug-in unit 5 and a ground wire conductive plug-in unit 6, and the middle cover plate 2 is correspondingly provided with a live wire plug-in hole 7, a zero line plug-in hole 8 and a ground wire plug-in sliding hole 9. The plugging plate 1 uses the ground wire plugging sliding hole 9 as symmetry axis symmetry, and the plugging plate 1 slides along the sliding direction of the ground wire plugging sliding hole 9. The plugging plate 1 is provided with a relief hole 22 for inserting a plug at a position corresponding to the ground wire plugging sliding hole 9.

In order to facilitate resetting of the plugging plate 1, a resetting piece is arranged between the plugging plate 1 and the middle cover plate 2, and the resetting direction of the resetting piece is along the sliding direction of the ground wire plugging sliding hole 9. When the three-plug is not inserted, the plugging plate 1 shields the setting of the live wire plugging hole 7 and the zero wire plugging hole 8, and plays a role in safety protection.

In order to support the sliding of the plugging plate 1, a first supporting step 10 is integrally formed on the structural seat 3 along the sliding direction of the plugging plate 1, the first supporting step 10 is integrally formed by a plurality of staggered supporting vertical plates, and the first supporting step 10 is positioned between the live wire conductive plug-in unit 4 and the zero wire conductive plug-in unit 5. The supporting vertical plate reduces the consumable of the structure, saves the cost and the weight of the socket, has better structural strength, and ensures the supporting effect. In order to prevent the plugging plate 1 from deformation when being subjected to single plug-in, two side edges of the plugging plate 1 on the structural seat 3 are integrally formed with second supporting steps 11, the shape of the second supporting steps 11 is matched with the installation grooves of the live wire conductive plug-in unit 4 and the zero line conductive plug-in unit 5, the second supporting steps 11 on two sides are arranged on one side, opposite to the live wire conductive plug-in unit 4 and the zero line conductive plug-in unit 5, of the plugging plate 1 can be supported in two directions, and the stability of the plugging plate can be improved.

Referring to fig. 4 to 6, in order to further improve the single plug preventing effect of the safety door mechanism, a third supporting step 12 integrally extends from one side of the middle cover plate 2 close to the structural seat 3, and the third supporting step 12 is located at one side of the plugging plate 1 far from the ground wire conductive plug 6. The third supporting step 12 is integrally arranged in a column shape, and a groove is formed in the position, close to the edge of the plugging plate 1, of the columnar structure to form the third supporting step 12. When the three-plug is not inserted, the edge of the plugging plate 1 is lapped on the third supporting step 12; after the three-pin plug is inserted, the plugging plate 1 slides away from the third supporting step 12. Therefore, the third supporting step 12 is further beneficial to improving the stability of supporting the plugging plate 1, and the plugging plate 1 is not easy to deform when single plugging occurs, so that the safety of the safety door mechanism is improved.

One end of the third supporting step 12 far away from the middle cover plate 2 is in pressure connection with the edge of one side, close to the middle cover plate 2, of the live wire conductive plug-in unit 4 and the zero line conductive plug-in unit 5, so that pressure connection limiting of the live wire conductive plug-in unit 4 and the zero line conductive plug-in unit 5 is realized. And when the plugging plate 1 does not slip, the plugging plate 1 is pressed against the third supporting step 12. The third supporting step 12 is used for further ensuring the limit stability of the live wire conductive plug-in 4 and the zero wire conductive plug-in 5. And when the single-plug condition occurs, the plugging plate 1 is less likely to deform.

Referring to fig. 1, 3 and 6, the sliding stability of the plugging plate 1 is improved, two groups of resetting pieces are arranged, and the two groups of resetting pieces are symmetrically distributed on two sides of the ground wire plugging sliding hole 9. The reset assembly comprises a reset spring 21, one end of the reset spring 21 is used for being abutted to the plugging plate 1, and the other end is used for being abutted to the middle cover plate 2.

Two symmetrical abutting plates 13 are integrally formed on one side, close to the structural seat 3, of the middle cover plate 2, a cylindrical first abutting block 14 is formed on one side, close to the third supporting step 12, of the abutting plates 13, and one end of a reset spring 21 is in interference combination with the first abutting block 14. The expansion groove 15 is formed in the position, close to one side of the middle cover plate 2, of the plugging plate 1 and corresponding to the reset spring 21, the reset spring 21 is connected in the expansion groove 15 in an expansion mode, a second abutting block 16 is integrally formed in one side, relative to the first abutting block 14, of the expansion groove 15, the second abutting block 16 is arranged in a columnar mode, and the other end of the reset spring 21 is in interference fit with the second abutting block 16. Meanwhile, the abutting plate 13 is slidingly connected in the telescopic groove 15 along the sliding direction of the plugging plate 1. The first abutting block 14 and the second abutting block 16 are beneficial to improving the stability of fixing the return spring 21, and the abutting plate 13 is beneficial to playing a role of guiding and limiting for sliding of the plugging plate 1, so that the sliding stability of the plugging plate 1 is improved.

In order to facilitate the movement of the plugging plate 1 to be smoothly pushed after the plug is inserted, a wedge-shaped guide block 17 is integrally formed on one side, away from the third supporting step 12, of the plugging plate 1, which is positioned in the ground wire plugging sliding hole 9, and a guide surface on the guide block 17 is inclined towards the inside of the ground wire plugging sliding hole 9. The guide block 17 is connected in the ground wire inserting sliding hole 9 in a sliding way. In order to further enhance the sliding stability of the plugging plate 1, one side of the plugging plate 1, which is positioned on the ground wire plugging sliding hole 9 and is close to the middle cover plate 2, is integrally formed with a square sliding block 18, and the sliding block 18 is connected in the ground wire plugging sliding hole 9 in a sliding manner, so that the effect of limiting and guiding is further achieved, and the sliding stability of the plugging plate 1 is improved.

Referring to fig. 7 and 8, since there are various specifications of the socket, there are few differences in many external structures, only the internal structure is changed, and in order to conveniently and rapidly identify the specifications of the socket, there are the following designs: the structure seat 3 is correspondingly provided with a first embedded part 19 and a second embedded part 20 which are used for the live wire conductive plug-in unit 4 and the zero wire conductive plug-in unit 5, the first embedded part 19 and the second embedded part 20 are of a communicated groove-shaped structure, the lengths of the conductive plug-in units of different specifications are different, and the end parts of the conductive plug-in units are arranged on the first embedded part 19 or the second embedded part 20. The distribution directions of the first embedded part 19 and the second embedded part 20 are along the sliding direction of the plugging plate 1, and the first embedded part 19 is positioned at one side far away from the ground wire plugging sliding hole 9. The projection of the edge of the plugging plate 1 away from the side of the ground wire plugging sliding hole 9 towards the structural seat 3 is located in the first embedded portion 19, and in this embodiment, the edge of the plugging plate 1 is projected in the middle of the first embedded portion 19. When using conductive inserts of different specifications, the position of the plugging plate 1 relative to the conductive insert can be used to quickly determine the specification of the socket.

The implementation principle of the single-plug-prevention three-plug safety door mechanism provided by the embodiment of the utility model is as follows: the structure seat 3 corresponds to the side integrated into one piece of the shutoff board 1 and has the second support step 11, and well closing plate 2 corresponds to the side of the shutoff board 1 and has further increased third support step 12, combines the effect of first support step 10 for the shutoff board 1 obtains stable support, is difficult to warp, thereby can place single the inserting, improves the security of emergency exit mechanism. And the mutual guiding and limiting functions among the ground wire inserting sliding hole 9, the guide block 17, the sliding block 18, the abutting plate 13 and the telescopic groove 15 are utilized, so that the sliding stability of the plugging plate 1 is improved.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (10)

1. The single-plug-prevention three-plug safety door mechanism is characterized by comprising a plugging plate (1), wherein the plugging plate (1) is connected between a middle cover plate (2) and a structure seat (3) in a sliding manner, and a reset piece is arranged between the plugging plate (1) and the middle cover plate (2); a live wire conductive plug-in unit (4), a zero wire conductive plug-in unit (5) and a ground wire conductive plug-in unit (6) are arranged in the structure seat (3), and a live wire plug-in hole (7), a zero wire plug-in hole (8) and a ground wire plug-in sliding hole (9) are correspondingly arranged on the middle cover plate (2); the plugging plate (1) slides along the sliding direction of the ground wire plugging sliding hole (9); when no plug is inserted, the plugging plate (1) shields the live wire plug hole (7) and the zero line plug hole (8); a first supporting step (10) is arranged on the structure seat (3) along the sliding direction of the plugging plate (1), and the first supporting step (10) is positioned between the live wire conductive plug-in unit (4) and the zero wire conductive plug-in unit (5); the structure seat (3) is provided with second supporting steps (11) at two side edges of the plugging plate (1), and the second supporting steps (11) are positioned at one side of the live wire conductive plug-in unit (4) and the zero wire conductive plug-in unit (5) opposite to each other; the plugging plate (1) is provided with a yielding hole (22) for inserting a plug at a position corresponding to the ground wire plugging sliding hole (9).

2. The single-plug-prevention three-plug safety door mechanism according to claim 1, wherein a third supporting step (12) extends from one side of the middle cover plate (2) close to the structural seat (3), the third supporting step (12) is positioned on one side of the plugging plate (1) far from the ground wire conductive plug-in unit (6), and when a three-plug is not inserted, the plugging plate (1) is lapped on the third supporting step (12); after the three-plug is inserted, the plugging plate (1) is far away from the third supporting step (12).

3. The single-plug three-plug prevention safety door mechanism according to claim 2, wherein one end of the third supporting step (12) far away from the middle cover plate (2) is in press connection with the live wire conductive plug-in unit (4) and the neutral wire conductive plug-in unit (5).

4. The single-plug-prevention three-plug-in safety door mechanism according to claim 1 or 2, wherein a first embedded part (19) and a second embedded part (20) for placing conductive plug-ins with different specifications are arranged on the structural base (3), the distribution directions of the first embedded part (19) and the second embedded part (20) are arranged along the sliding direction of the plugging plate (1), the first embedded part (19) is positioned at one side far away from the ground wire plug-in sliding hole (9), and the projection of the edge of the plugging plate (1) far away from one side of the ground wire plug-in sliding hole (9) towards the structural base (3) is positioned in the first embedded part (19).

5. The single-plug-prevention three-plug safety door mechanism according to claim 1, wherein the reset piece comprises a reset spring (21), one end of the reset spring (21) is abutted to the plugging plate (1), and the other end of the reset spring is abutted to the middle cover plate (2).

6. The single-plug-prevention three-plug safety door mechanism according to claim 5, wherein an abutting plate (13) is arranged on the middle cover plate (2), a first abutting block (14) is arranged on the abutting plate (13), and one end of the return spring (21) is combined with the first abutting block (14) in an interference manner; the plugging plate (1) is close to one side of the middle cover plate (2) and is provided with a telescopic groove (15), a return spring (21) is connected in the telescopic groove (15) in a telescopic mode, a second abutting block (16) is arranged in the telescopic groove (15), and the other end of the return spring (21) is in interference fit with the second abutting block (16).

7. The single-plug three-plug prevention safety door mechanism according to claim 6, wherein the abutting plate (13) is slidingly connected in the telescopic slot (15).

8. The single-plug-prevention three-plug safety door mechanism according to claim 1, wherein a guide block (17) is arranged on the plugging plate (1) at a position, away from the live wire plug hole (7) and the neutral wire plug hole (8), of the ground wire plug sliding hole (9), and a guide surface on the guide block (17) faces the ground wire plug sliding hole (9); the guide block (17) is connected in the ground wire inserting sliding hole (9) in a sliding mode.

9. The single-plug-prevention three-plug safety door mechanism according to claim 8, wherein a sliding block (18) is arranged on one side of the plugging plate (1) close to the middle cover plate (2) and on one side of the plugging plate away from the guide block (17), and the sliding block (18) is connected in the ground wire plug-in sliding hole (9) in a sliding manner.

10. The single-plug-prevention three-plug safety door mechanism according to claim 1, wherein two groups of reset pieces are arranged, and the two groups of reset pieces are symmetrically distributed on two sides of the ground wire plug-in sliding hole (9).