Socket and plug

Abstract

The invention relates to a socket and a plug. The male head socket is composed of a male head socket body and a female head plug matched with a socket jack. The male head socket body comprises a socket panel with a hole, a long insulating shell with an opening at one end, three electrode insertion sheets, a safety baffle sheet, a locking mechanism and an electric contact pressure switch; the problems that according to an existing male head socket, fingers are likely to make contact with metal sheets to cause electric shock, and a plug is difficult to pull out are solved.

Description

Technical Field

[0001] The invention relates to the technical field of electrical sockets, in particular to a socket and a plug. Background Art

[0002] Whether in family life or industrial production, plugs and sockets are essential devices. Generally speaking, the two or three metal sheets of ordinary power plugs are exposed. When using, you can hold the plastic or rubber part of the plug and insert the metal sheet into the socket of the power socket to make the corresponding electrodes contact and energize. When children with no safety awareness use the socket, because children's fingers are small and they have no operating experience, it is easy for their fingers to contact the metal sheet and get an electric shock. Even adults, when unplugging the plug from the mobile power strip with one hand, there is a risk that the finger pressing the strip will slide towards the metal sheet of the plug. Adding a protective door to the socket is a design that almost most socket companies agree on. The protective door is also divided into three types: a safety door with an external protective cover design, a safety door designed to be opened by ground pole drive, and a safety door designed to be opened by L pole / N pole drive. The last type of safety door designed to be opened by L pole / N pole drive is currently widely used, but the above safety doors cannot guarantee that children will touch the socket with wet hands, thereby causing safety accidents.

[0003] On September 25, 2013, China Utility Model Authorization Announcement No. CN203218536U disclosed a safe power socket and plug, in which an insulating ring located on the front side of the plug is connected to the edge of the plug; and a protective groove compatible with the insulating ring is set on the surface of the socket. When such a design is used, the insulating ring on the plug blocks the fingers outside the metal sheet of the plug to avoid the possibility of electric shock due to improper operation, but the insulating ring on the front side of the plug and the metal sheet of the plug are simultaneously inside the socket panel, which is equivalent to forming at least one surrounding limit relative to the plug inside the socket panel. As a result, when unplugging the plug, the insulating ring of the plug is surrounded by the limit and cannot swing left and right, and the metal sheet of the plug is pressed tightly by the metal spring of the socket, making it difficult to unplug the plug. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a socket and a plug, which solve the problems of the existing male socket easily causing fingers to come into contact with metal sheets and causing electric shock, and the difficulty in removing the plug.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a socket and a plug, which are composed of a male socket body and a female plug matching the socket socket; the male socket body includes a socket panel with holes, an elongated insulating shell with an opening at one end, three electrode plugs, a safety baffle, a locking mechanism and an electric contact pressure switch; the opening of the elongated insulating shell is assembled directly opposite to the hole of the socket panel to form a socket socket; the three electrode plugs are fixed to the bottom end of the elongated insulating shell in a triangle arrangement of ground on the top, zero on the left and fire on the right, and the electric contact end part of the electrode plug is blocked by the elongated insulating shell. The three electrode plugs are surrounded by an insulating shell; the rear ends of the three electrode plugs are exposed outside the elongated insulating shell, and respectively become the ground wire terminal, the neutral wire terminal and the live wire lead-out terminal; the shape and size of the surrounding contour of the safety baffle match the shape and size of the inner cavity of the elongated insulating shell; three through holes are opened at the two end surfaces of the safety baffle corresponding to the positions of the three electrode plugs; a first compression spring is arranged between the safety baffle and the bottom end of the elongated insulating shell, so that the safety baffle can move back and forth along the length of the electrode plug under the action of the first compression spring, and when static, the safety baffle stays at a position flush with the surface of the socket port; The locking mechanism is composed of a lock body seat, a movable block and a second compression spring; a guide hole is opened on the lock body seat, and the second compression spring is installed between the lock body seat and the movable block; a guide column is provided at the upper end of the movable block, and the movable block is inserted into the guide hole of the lock body seat to overcome the elastic force of the second compression spring and move up and down relative to the lock body seat; The locking mechanism is arranged on the upper surface of the elongated insulating shell, and a front through hole and a rear through hole are opened in the elongated insulating shell portion corresponding to the position of the locking mechanism; a sliding contact rod with a spherical head and a locking column with a beveled head are arranged at the lower end of the moving block, which are sequentially inserted into the front through hole and the rear through hole of the elongated insulating shell portion; in static state, under the elastic force of the second compression spring, a part of the spherical head of the sliding contact rod and the beveled head of the locking column are respectively exposed in the elongated insulating shell; when a safety baffle or the female plug passes through the front through hole of the elongated insulating shell portion, the safety baffle or the female plug presses the spherical head to make the sliding contact rod rise, and the moving block overcomes the elastic force of the second compression spring to drive the beveled head of the locking column to move upward; An electric contact pressure switch is provided on the lower surface of the elongated insulating shell, and a strip-shaped through hole is provided at a position of the elongated insulating shell corresponding to the position of the electric contact pressure switch; a pressure-touch mechanism is provided on the strip-shaped through hole, so that when the safety baffle is moved to the position of the pressure-touch mechanism, the pressure-touch mechanism applies pressure downward to the electric contact pressure switch, so that the electric contact pressure switch is electrically connected; one of the two electrodes of the electric contact pressure switch is connected to the live wire lead-out end, and the other electrode becomes the live wire connection terminal; The pressure contact mechanism consists of a "7"-shaped lever and a return spring; one end of the "7"-shaped lever is fixed to the long insulating shell through a rotating shaft, and the other end of the "7"-shaped lever passes through the strip-shaped through hole of the long insulating shell part and extends into the electric contact pressure switch, and presses on the moving contact piece of the electric contact pressure switch.

[0006] Compared with the prior art, the present invention provides a socket and a plug, which have the following beneficial effects: 1. Compared with ordinary power sockets and plugs, the outer periphery of the female plug of this plug does not expose the metal electrode, and the human finger cannot touch the electrode to get an electric shock. The male metal electrode of this socket is located inside the socket body and is blocked by a safety baffle, which is also not accessible to human fingers. Taking a step back, if a foreign object or a child's finger intentionally pushes the safety baffle, the shape of the foreign object or the child's finger is different from that of the female plug, and the sliding contact rod with the spherical head cannot continue to press the front through-hole position. The pushing depth of the safety baffle is limited, and the metal electrode is exposed and not charged, so the human finger cannot touch the electrode to get an electric shock. 2. The present invention adopts the popular 86*86mm panel on the market, which can be interchanged with the existing socket board bottom box without changing the installation bottom box, and the use cost is low; 3. The female plug of the present invention is integrally inserted into the socket of the male socket. The outer contour of the female plug is designed to be in the shape of a rod, which is convenient to hold. There is no surrounding limit of the prior art plug, and the plug is easy to remove. 4. The electrode insert of the male socket of the present invention is not a spring and is not easily damaged, thus greatly extending the service life of the male socket. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is the front view of the present invention.

[0008] Figure 2 It is a schematic diagram of a female plug of the present invention.

[0009] Figure 3 yes Figure 1 Schematic side cross-sectional view of .

[0010] Figure 4 It is a side cross-sectional schematic diagram of the present invention in a normal use state.

[0011] Figure 5 It is a side cross-sectional schematic diagram of the present invention in an abnormal use state.

[0012] Figure 6 It is a schematic diagram of the safety baffle structure of the present invention.

[0013] The markings in the figure are: 1. Male socket body; 2. Female plug; 3. Socket panel; 4. Long insulating shell; 5. Electrode plug; 6. Safety baffle; 7. Locking mechanism; 8. Electric contact pressure switch; 9. Socket socket; 10. Live wire lead-out terminal; 11. Through hole; 12. First compression spring; 13. Lock body seat; 14. Moving block; 15. Second compression spring; 16. Spherical head; 17. Bevel head; 18. "7" shaped lever; 19. Reset spring; E. Ground wire terminal; N. Neutral wire terminal; L. Live wire terminal. DETAILED DESCRIPTION

[0014] In order to facilitate understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive. Example

[0015] A socket and a plug, consisting of a male socket body 1 and a female plug 2 matching the socket socket 9; the male socket body 1 includes a socket panel 3 with a hole, an elongated insulating shell 4 with an opening at one end, three electrode plugs 5, a safety baffle 6, a locking mechanism 7 and an electric contact pressure switch 8; the opening of the elongated insulating shell 4 is assembled facing the hole of the socket panel 3 to form the socket socket 9; the three electrode plugs 5 are fixed to the bottom end of the elongated insulating shell 4 in a triangular arrangement of ground on the top, neutral on the left and live on the right, and the electrical contact end parts of the electrode plugs 5 are surrounded by the elongated insulating shell 4; the rear ends of the three electrode plugs 5 are exposed outside the elongated insulating shell 4, and respectively become the ground wire terminal E, the neutral wire terminal N and the live wire lead-out terminal 10; the surrounding of the safety baffle 6 The size of the surrounding contour matches the size of the inner cavity of the long insulating shell 4; three through holes 11 are opened on both end surfaces of the safety baffle 6 corresponding to the positions of the three electrode plugs 5; a first compression spring 12 is arranged between the safety baffle 6 and the bottom end of the long insulating shell 4, so that the safety baffle 6 can move back and forth along the length of the electrode plug 5 under the action of the first compression spring 12, and in static state, the safety baffle 6 stays at a position flush with the surface of the socket 9; at this time, the three through holes 11 of the safety baffle 6 correspond to the three electrode plugs 5 of the socket body that are shielded from the outside; in this state, the pressure contact mechanism in the long insulating shell 4 does not apply pressure to the electrical contact pressure switch 8, the electrical contact pressure switch 8 disconnects the electrical connection between the live wire terminal L and the electrode plug 5, and the three electrode plugs 5 are not charged; The locking mechanism 7 is composed of a lock body seat 13, a movable block 14 and a second compression spring 15; a guide hole is opened on the lock body seat 13, and the second compression spring 15 is installed between the lock body seat 13 and the movable block 14; a guide column is provided at the upper end of the movable block 14 and is inserted into the guide hole of the lock body seat 13 to overcome the elastic force of the second compression spring 15 and move up and down relative to the lock body seat 13; The locking mechanism 7 is arranged on the upper surface of the elongated insulating shell 4, and a front through hole and a rear through hole are opened in the part of the elongated insulating shell 4 corresponding to the position of the locking mechanism 7; the lower end of the above-mentioned moving block 14 is provided with a sliding rod with a spherical head 16 and a locking column with a bevel head 17, which are sequentially inserted into the front through hole and the rear through hole of the above-mentioned elongated insulating shell 4; in static state, under the elastic force of the second compression spring 15, the spherical head 16 of the sliding rod and the bevel head 17 of the locking column are respectively partially exposed in the elongated insulating shell 4; when the safety baffle 6 or the above-mentioned female plug 2 passes through the front through hole of the above-mentioned elongated insulating shell 4, the safety baffle 6 or the above-mentioned female plug 2 presses the spherical head to make the sliding rod rise, and the moving block 14 overcomes the elastic force of the second compression spring 15 to drive the bevel head 17 of the locking column to do an upward movement; An electric contact pressure switch 8 is provided on the lower surface of the elongated insulating shell 4, and a strip-shaped through hole is opened at a position of the elongated insulating shell 4 corresponding to the position of the electric contact pressure switch 8; a pressure-touch mechanism is installed on the strip-shaped through hole, so that when the safety baffle 6 moves to the position of the pressure-touch mechanism, the pressure-touch mechanism presses the electric contact pressure switch 8 downward to realize the electrical connection of the electric contact pressure switch 8; one of the two electrodes of the electric contact pressure switch 8 is connected to the live wire lead-out terminal 10, and the other electrode becomes the live wire terminal L; The pressure contact mechanism is composed of a "7"-shaped lever 18 and a return spring 19; one end of the "7"-shaped lever 18 is fixed to the long insulating shell 4 through a rotating shaft, and the other end of the "7"-shaped lever 18 passes through the strip-shaped through hole of the long insulating shell 4 and extends into the electric contact pressure switch 8, and presses on the moving contact piece of the electric contact pressure switch 8; The electrical contact end of the electrode plug 5 is partially hidden in the inner cavity of the long insulating shell 4, wherein the extension of the electrical contact end of the longest ground electrode plug 5 does not exceed the opening plane of the long insulating shell 4; the female plug 2 is a three-core triangle plug.

[0016] Furthermore, the distance between the sliding contact rod with the spherical head 16 and the locking column with the bevel head 17 at the lower end of the moving block 14 is greater than the thickness of the safety baffle 6 .

[0017] Furthermore, the socket panel 3 of the male socket body 1 is a 86*86mm panel, and the mounting screws of the panel match the current standard 86*86mm bottom box.

[0018] When the female plug 2 is inserted along the socket 9, the female plug 2 is closely attached to the safety baffle 6 and pushed inward along the inner cavity of the long insulating shell 4 to overcome the elastic force of the first compression spring 12; the safety baffle 6 first presses the sliding contact rod with the spherical head 16 of the locking mechanism 7 through the front through-hole position of the long insulating shell 4, so that the sliding contact rod with the spherical head 16 rises and the moving block 14 as a whole overcomes the elastic force of the second compression spring 15 to make an upward movement, and the locking column with the inclined surface shrinks and hides in the rear through-hole of the long insulating shell 4, and the inner cavity of the long insulating shell 4 remains unobstructed; as the female plug 2 and the safety baffle 6 continue to advance, the safety baffle 6 leaves The front through hole position of the elongated insulating shell 4 is reached, and the female plug 2 which is in close contact with the safety baffle 6 takes over and continues to press the sliding contact rod with the spherical head 16 at the front through hole position. The locking column with the bevel is still retracted and hidden in the rear through hole of the elongated insulating shell 4, and the inner cavity of the elongated insulating shell 4 continues to remain unobstructed; as the female plug 2 continues to be pushed to the bottom along the inner cavity of the elongated insulating shell 4 in close contact with the safety baffle 6, at this time, the safety baffle 6 encounters the pressure-touch mechanism in the elongated insulating shell 4 to apply pressure to the electrical contact pressure switch 8, and the electrical contact pressure switch 8 connects the electrical connection between the live wire terminal L and the electrode plug 5, and the three electrode plugs 5 supply power to the female plug 2 safely.

[0019] When the male socket body 1 is static, when a foreign object other than the female plug 2, such as a child's finger, pushes the safety baffle 6 along the socket port 9; the safety baffle 6 first presses the sliding rod with the spherical head 16 of the locking mechanism 7 through the front through-hole position of the elongated insulating shell 4, and the sliding rod with the spherical head 16 rises and drives the driving block 14 as a whole to overcome the elastic force of the second compression spring 15 to make an upward movement, and the locking column with the inclined surface shrinks and hides in the rear through-hole of the elongated insulating shell 4, and the inner cavity of the elongated insulating shell 4 remains unobstructed; as the safety baffle 6 continues to move forward and leaves the front through-hole position of the elongated insulating shell 4, due to foreign objects or children's hands, The shapes of the fingers are different, and they cannot take over and continue to press the sliding contact rod with the spherical head 16 at the front through hole position. The sliding contact rod with the spherical head 16 returns to a freely released state, and the movable block 14 drives the inclined locking column to lock in the rear through hole of the long insulating shell 4 under the elastic force of the second compression spring 15. The safety baffle 6 is blocked by the inclined locking column and cannot be further advanced. The safety baffle 6 cannot press the above-mentioned pressure contact mechanism, and thus does not apply pressure to the electrical contact pressure switch 8. The electrical contact pressure switch 8 disconnects the electrical connection between the live wire terminal L and the electrode plug 5, and the three electrode plugs 5 are not energized, thereby ensuring the safety of the child.

Claims

1. A socket and a plug, comprising a male socket body (1) and a female plug (2) matching the socket port (9); the characteristics are: The male socket body (1) comprises a socket panel (3) with a hole, a long insulating shell (4) with an opening at one end, three electrode plugs (5), a safety baffle (6), a locking mechanism (7) and an electric contact pressure switch (8); the opening of the long insulating shell (4) is assembled opposite to the hole of the socket panel (3) to form a socket socket (9); the three electrode plugs (5) are fixed to the bottom end of the long insulating shell (4) in a triangular arrangement of ground on the top, neutral on the left and live on the right, and the electrical contact end parts of the electrode plugs (5) are surrounded by the long insulating shell (4); the rear ends of the three electrode plugs (5) are exposed outside the long insulating shell (4) to form a ground wire terminal (E), a neutral wire terminal (N) and a live wire lead-out terminal (10); the surrounding contour shape and size of the safety baffle (6) and the inner cavity of the long insulating shell (4) are The shapes and sizes match each other; three through holes (11) are formed on both end surfaces of the safety baffle (6) corresponding to the positions of the three electrode plugs (5); a first compression spring (12) is arranged between the safety baffle (6) and the bottom end of the elongated insulating shell (4), so that the safety baffle (6) can move back and forth along the length of the electrode plug (5) under the action of the first compression spring (12), and in a static state, the safety baffle (6) stays at a position flush with the surface of the socket port (9); at this time, the three through holes (11) of the safety baffle (6) correspond to the three electrode plugs (5) of the socket body that are shielded and not exposed; in this state, the pressure contact mechanism in the elongated insulating shell (4) does not apply pressure to the electrical contact pressure switch (8), the electrical contact pressure switch (8) disconnects the electrical connection between the live wire terminal (L) and the electrode plug (5), and the three electrode plugs (5) are not charged; The locking mechanism (7) is composed of a lock body seat (13), a movable block (14) and a second compression spring (15); a guide hole is formed on the lock body seat (13), and the second compression spring (15) is installed between the lock body seat (13) and the movable block (14); a guide column is provided at the upper end of the movable block (14) and is inserted into the guide hole of the lock body seat (13) to overcome the elastic force of the second compression spring (15) and move up and down relative to the lock body seat (13); The locking mechanism (7) is arranged on the upper surface of the elongated insulating shell (4), and a front through hole and a rear through hole are formed in the portion of the elongated insulating shell (4) corresponding to the position of the locking mechanism (7); a sliding contact rod with a spherical head (16) and a locking column with a bevel head (17) are provided at the lower end of the moving block (14), which are inserted into the front through hole and the rear through hole of the elongated insulating shell (4) in sequence; in static state, under the elastic force of the second compression spring (15), the moving block (14) is locked. The spherical head (16) of the sliding contact rod and the bevel head (17) of the locking column are partially exposed in the elongated insulating shell (4); when the safety baffle (6) or the female plug (2) passes through the front through hole of the elongated insulating shell (4), the safety baffle (6) or the female plug (2) presses the spherical head to make the sliding contact rod rise, and the moving block (14) overcomes the elastic force of the second compression spring (15) to drive the bevel head (17) of the locking column to move upward; An electric contact pressure switch (8) is provided on the lower surface of the elongated insulating shell (4), and a strip-shaped through hole is opened at a position of the elongated insulating shell (4) corresponding to the position of the electric contact pressure switch (8); a pressure-touch mechanism is installed on the strip-shaped through hole, so that when the safety baffle (6) moves to the position of the pressure-touch mechanism, the pressure-touch mechanism applies pressure downward to the electric contact pressure switch (8), thereby realizing electrical connection of the electric contact pressure switch (8); one of the two electrodes of the electric contact pressure switch (8) is connected to the live wire lead-out terminal (10), and the other electrode becomes the live wire connection terminal (L); The pressure contact mechanism is composed of a "7"-shaped lever (18) and a return spring (19); one end of the "7"-shaped lever (18) is fixed to the long insulating shell (4) via a rotating shaft, and the other end of the "7"-shaped lever (18) passes through the strip-shaped through hole of the long insulating shell (4) and extends into the electric contact pressure switch (8), and presses on the moving contact piece of the electric contact pressure switch (8); The electrical contact end of the electrode plug (5) is partially hidden in the inner cavity of the elongated insulating shell (4), wherein the electrical contact end of the longest ground electrode plug (5) does not extend beyond the opening plane of the elongated insulating shell (4); The female plug (2) is a three-core shaped plug.

2. The socket and plug according to claim 1, further characterized in that: The distance between the sliding contact rod with the spherical head (16) at the lower end of the moving block (14) and the locking column with the bevel head (17) is greater than the thickness of the safety baffle (6).

3. The socket and plug according to claim 1, further characterized in that: The socket panel (3) of the male socket body (1) is a 86*86 mm panel, and the mounting screws of the panel match the current standard 86*86 mm bottom box.

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