WO2017181434A1

WO2017181434A1 - Safety socket

Info

Publication number: WO2017181434A1
Application number: PCT/CN2016/080107
Authority: WO
Inventors: 董开郑
Original assignee: 豪仕泰实业(深圳)有限公司
Priority date: 2016-04-19
Filing date: 2016-04-25
Publication date: 2017-10-26
Also published as: CN205583272U

Abstract

A safety socket comprises a housing and two copper strip sockets (20), and also comprises an oval cam (30), a transmission shaft (40), a locking plate (50), an elastic element (60) and a positioning shaft (70) disposed in the housing; when a plug is inserted into the safety socket, the oval cam is driven by the transmission shaft to rotate, the two long-axis vertexes of the oval cam respectively squeeze the outer side of a tail end (52) of the locking plate so as to enable the locking plate to rotate along the positioning shaft, the tail end of the locking plate overcomes an elastic force of the elastic element to engage, and a hook (511) at a front end (51) of the locking plate passes through a positioning groove (23) on the copper strip sockets and is inserted into a circular hole of a plug insertion panel so as to prevent the plug from unplugging from the safety socket; when the oval cam is driven by the transmission shaft to rotate, the contact ends between the oval cam and the locking plate switch from the long-axis vertexes to the short-axis vertexes, the elastic element squeezes the outer side of the tail end of the locking plate to enable the locking plate to rotate along the positioning shaft, the hook at the front end of the locking plate is pulled out from the circular hole of the plug insertion panel, and the plug can be freely unplugged from the safety socket. The safety socket of the invention has a simple structure and low production cost.

Description

Manual Title: Safety Socket

Technical field

[0001] The present invention relates to the field of sockets, and in particular, to a safety socket.

BACKGROUND OF THE INVENTION

[0003] US 1-15 and 5-15 plugs must have round holes on the inserts connecting the neutral and live wires.

[0004] A socket for use with the 1-15 and 5-15 type plugs of the US standard includes a housing and two symmetrically disposed socket copper pieces, the socket copper piece is fixedly mounted on the housing, and the front end is disposed on the housing Internally, the top end of the housing is provided with a jack corresponding to the front end thereof, and the plug of the plug is inserted through the jack into the front end of the copper piece of the plug socket; the tail end of the copper piece of the socket is disposed outside the casing for connecting the power line, etc. . When the socket is in use, the plug and the socket are separated due to the pulling and shaking, and there is a safety hazard in use.

[0005] In order to prevent the plugs and sockets of the United States and the like 1-15 and 5-15 from being easily detached, the prior art provides various solutions, such as electronic locking, etc., which has a complicated structure and high production cost.

[0006] Utility model content

[0007] The main object of the present invention is to provide a safety socket that has a simple structure and reduces production costs.

In order to achieve the above object, the present invention provides a safety socket including a housing and two socket copper sheets, and further includes an elliptical cam, a transmission shaft, a locking piece, an elastic member and a positioning disposed in the housing. Axis

[0009] the elliptical cam is disposed in the middle of two socket copper sheets;

[0010] the transmission shaft extends through the sidewall of the housing and is fixedly coupled to the axial portion of the elliptical cam to drive the rotation of the elliptical cam;

[0011] The positioning shaft includes two, symmetrically disposed on two sides of the elliptical cam, and is fixed to the inner wall of the housing; [0012] the locking piece includes two, symmetrically disposed on two sides of the elliptical cam, And respectively pivotally connected to the corresponding positioning shafts, and the opposite sides of the front ends of the two locking pieces are respectively provided with hooks;

[0013] The elastic member comprises two, symmetrically disposed on two sides of the elliptical cam, and disposed on opposite outer sides of the tail ends of the two locking pieces, one end of the elastic member is pressed into contact with the inner side wall of the casing, and One end is pressed to contact the outer side of the tail end of the corresponding locking piece; [0014] the two sides of the position where the socket copper piece is in contact with the plug insert are respectively provided with positioning slots corresponding to the circular holes on the plug insert;

[0015] When the plug is inserted into the safety socket 吋, the elliptical cam is rotated by the transmission shaft, and the two long axis vertices of the elliptical cam respectively press the outer side of the tail end of the locking piece to the two sides to make the locking piece along the positioning axis Rotating, the tail end of the locking piece overcomes the elastic force of the elastic member, and the hook at the front end of the locking piece is inserted into the circular hole of the plug insert through the positioning groove on the copper piece of the socket to restrict the plug from being pulled out of the safety socket; The shaft drives the elliptical cam to rotate, and the contact end of the elliptical cam and the locking piece is changed from the apex of the long axis to the apex of the short axis, and the elastic member presses the outer side of the tail end of the locking piece to rotate the locking piece along the positioning axis, the locking piece The front end hook is pulled away from the round hole of the plug insert, and the plug can be freely pulled out of the safety socket.

[0016] Further, a portion of the drive shaft located outside the housing is provided with a handle.

[0017] Further, the free end of the transmission shaft is provided with an expansion chuck, and the handle is provided with a mounting hole, and the handle is fixed on the transmission shaft through the mounting hole sleeved on the expansion chuck.

[0018] Further, the outer side of the housing is provided with a limiting device that limits the rotation angle of the handle.

[0019] Further, the limiting device is a baffle fixed on an outer sidewall of the housing;

[0020] The handle includes a wrench portion, a block portion and a circular arc portion which are sequentially connected, and the circular arc portion is rotatably connected to the baffle along the drive shaft, and when one side of the block portion is parallel with the baffle plate, The baffle then continues to rotate in the direction of rotation.

[0021] Further, the elastic member is a compression spring.

[0022] Further, the locking piece includes a front end, a tail end and a turning portion;

[0023] The front end and the rear end are connected by a turning portion, the turning portion is pivotally connected to the positioning shaft;

[0024] The extension lines of the front end and the tail end intersect, and the angle toward the elliptical cam direction is an obtuse angle greater than 150 degrees.

[0025] The safety socket of the present invention, through the rotation of the long axis and the short axis of the elliptical cam, simultaneously controls the hooks of the front ends of the two locking pieces to be inserted into the positioning groove of the corresponding socket copper piece and the circular hole on the plug insert , the plug is fixed on the socket, and the structure is simple and the production cost is lower than that of the prior art locking structure

BRIEF DESCRIPTION OF THE DRAWINGS

1 is a schematic exploded view of a safety socket according to an embodiment of the present invention; 2 is a schematic structural view of the locking piece of the present invention in the locked state ;;

[0029] FIG. 3 is a schematic structural view of the locking piece of the present invention in an unfolded state;

4 is a schematic structural view of a safety socket of the present invention-embodiment;

[0031] FIG. 5 is a schematic structural view of a transmission shaft and an elliptical cam according to the embodiment of the present invention;

6 is a schematic structural view of a handle of the present invention-embodiment;

[0033] FIG. 7 is a schematic structural view of a locking piece of the present invention-embodiment;

8 is a schematic structural view of a socket copper piece according to the embodiment of the present invention.

[0035] The implementation, functional features, and advantages of the present invention will be further described with reference to the accompanying drawings.

DETAILED DESCRIPTION

The specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0038] Referring to FIG. 1 to FIG. 8 , a safety socket according to an embodiment of the present invention includes a housing and two socket copper sheets 20 , and further includes an elliptical cam 30 and a transmission shaft 40 disposed in the housing. The locking piece 50, the elastic member 60 and the positioning shaft 70; the elliptical cam 30 is disposed in the middle of the two socket copper sheets 20; the transmission shaft 40 extends through the housing side wall and is fixedly coupled to the axis of the elliptical cam 30 The core portion drives the rotation of the elliptical cam 30; the positioning shaft 70 includes two, symmetrically disposed on both sides of the elliptical cam 30, and is fixed to the inner wall of the housing; the locking piece 50 includes two, symmetrically disposed on the elliptical cam The two sides of the 30 are respectively pivotally connected to the corresponding positioning shafts 70. The opposite sides of the front ends 51 of the two locking pieces 50 are respectively provided with hooks 511. The elastic members 60 include two and are symmetrically disposed on the elliptical cams 30. Both sides of the elastic member 60 are pressed against the inner side wall of the housing, and the other end is pressed into contact with the corresponding locking piece 50. Outer end 52 outer; socket copper 20 with plug Two positioning slots 23 corresponding to the circular holes on the plug blades are respectively disposed on both sides of the contact position; referring to FIG. 2, when the plug is inserted into the safety socket, the elliptical cam 30 is rotated by the transmission shaft 40, and two of the elliptical cams 30 are The apex of the long axis presses the outer side of the tail end 52 of the locking piece 50 to the two sides to rotate the locking piece 50 along the positioning shaft 70. The tail end 52 of the locking piece 50 overcomes the elastic force of the elastic member 60, and the front end of the locking piece 50 The hook 511 of the 51 is inserted into the circular hole of the plug insert through the positioning slot 23 on the socket copper piece 20 to restrict the plug from being pulled out of the safety socket; referring to FIG. 3, when the elliptical cam 30 is rotated by the drive shaft 40, the ellipse The contact end of the cam 30 and the locking piece 50 is The apex of the long axis changes toward the apex of the short axis, and the elastic member 60 presses the outer side of the tail end 52 of the locking piece 50 to rotate the locking piece 50 along the positioning shaft 70. The front end 51 of the locking piece 50 is hooked 511 and the circle of the plug insert is pulled away. The hole, the plug can be freely pulled out of the safety socket.

[0039] In the embodiment, the front end of the socket copper piece 20 is a clamping portion 21, and the clamping portion 21 is oppositely disposed with two copper clips for clamping the plug insert, and the positioning groove 23 is disposed at the clamping portion. On the two copper clips of 21, the positioning groove 23 is generally a strip-shaped through hole. The clamping portion 21 is connected with a copper piece on a side perpendicular to the two copper clips. The copper piece penetrates the bottom of the housing and is connected to the tail end 52 of the socket copper piece 20. The tail end 52 is generally a U-shaped copper piece 22, which is convenient. Connect to the wire. The socket copper piece 20 is provided with a positioning hole, and the positioning pin is disposed on the casing, and the socket copper piece is installed in the casing through the cooperation of the positioning hole and the positioning pin. The elliptical cam 30 is disposed in the middle of the two socket copper sheets 20, generally disposed on a side close to the bottom of the housing, so as to leave the setting of the clamping portion 21 of the socket copper sheet 20, the elliptical cam 30 and the transmission shaft 40 is generally made of insulating material to improve the safety of use, such as made of hard plastic. The positioning shaft 70 is pivotally connected to the locking piece 50, that is, corresponding to the fulcrum of the lever, so that the two ends of the locking piece 50 move in opposite directions, and the two positioning shafts 70 are generally disposed on opposite sides of the two socket copper pieces 20, respectively. The outer side is the outer side of the opposite side of the two socket copper sheets 20. The locking piece 50 is equivalent to the lever of the lever, and the front end 51 is provided with a hook 511, and then the movement of the trailing end 52 is controlled to control the movement of the hook 51 of the front end 51. The elastic member 60 is a device for providing a restoring force of the locking piece 50. When the two long axis apexes of the elliptical cam 30 press the locking piece 50, the two elastic members 60 provide the locking piece 50 to return to the original position. The restoring force causes the two locking pieces 50 to hold the elliptical cam 30 to prevent the elliptical cam 30 from rotating freely.

[0040] Referring to FIG. 4, in the embodiment, the portion of the transmission shaft 40 located outside the casing is provided with a handle 41. The arrangement of the handle 41 can improve the convenience of the user, and the handle 41 can be a non-slip disk or a belt. A disc with a wrench, etc.

Referring to FIG. 5 and FIG. 6 , in the embodiment, the free end of the transmission shaft 40 is provided with an expansion chuck 42 , and the handle 41 is provided with a mounting hole 414 , and the handle 41 is sleeved to expand through the mounting hole 414 . The chuck 42 is fixed to the drive shaft 40. The mounting hole 414 is generally a non-circular hole, such as a square hole. The expansion head 42 generally includes an expansion head 422 and a slot 421 adapted to the mounting hole 414. When the mounting hole 414 of the handle 41 presses the expansion head 422 and After being inserted into the card slot 421, the portion of the expansion head 422 that is compressed is reset, and the handle 41 is fixedly fixed to the card slot 421, and the structure is simple and convenient to install. [0042] In this embodiment, the outer side of the casing is provided with a limiting device for limiting the rotation angle of the handle 41, the limiting device is a baffle fixed on the outer side wall of the casing; the handle 41 includes a wrench connected in sequence a portion 413, a square portion 412 and a circular arc portion 411. The circular arc portion 411 is rotated along the transmission shaft 40 and is slidably coupled to the baffle. When one side of the square portion 412 is parallel to the baffle, the baffle is limited. The block portion 412 continues to rotate in the direction of rotation. The chord length of the arc portion 411 is the same as the side length of the block portion 412 so that the side portions of the block portion 412 located on both sides of the arc portion 411 are in contact with the shutter, and the restriction handle 41 continues to rotate in the original rotation direction. It should be noted that when the handle 41 is restrained by the shutter, the two long axis vertices of the elliptical cam 30 are respectively in a state of pressing the locking piece 50.

In the embodiment, the elastic member 60 is a compression spring, and in other embodiments, it may be a device such as a spring.

One side of the locking piece 50 corresponding to the compression spring is disposed on the protrusion 521, and the compression spring is inserted along the axis of the compression spring to prevent the compression spring from being displaced.

[0044] In the embodiment, the locking piece 50 includes a front end 51, a tail end 52 and a turning portion 53. The front end 51 and the tail end 52 are connected by a turning portion 53, and the turning portion 53 is pivotally connected to the positioning. The shaft 70; the extension of the front end 51 and the trailing end 52 intersect, and the angle toward the elliptical cam 30 is an obtuse angle greater than 150 degrees. With such a structure of the locking piece 50, the front end 51 can be inclined toward the socket copper piece 20, and the volume of the front end of the casing can be reduced. The locking piece 50 is integrally formed and is convenient for production and installation, and is generally made of a material such as a copper piece or a stainless steel piece.

[0045] In the embodiment, the housing generally includes an upper shell 11 and a lower shell 12 that are respectively covered with each other, and the upper shell 11 and the lower shell 12 are respectively provided with a rotation stop for restricting the elliptical cam 30, the locking piece 50, and the like. The limiting member, the transmission shaft 40 is disposed through the lower casing 12, and the inner casing 11 is provided with a limiting groove corresponding to the elliptical cam 30, and the end of the limiting groove can also be provided with a circular groove, and the transmission shaft 40 can penetrate the elliptical shape The cam 30 extends into the top of the circular groove and abuts against the bottom of the circular groove.

[0046] In a specific embodiment, the safety socket is an American 5-15 type socket, and the socket has three jacks, respectively a ground socket, and a socket of a neutral line and a fire line, and the ground socket is circular, and The sockets of the neutral and live wires are generally rectangular and parallel to each other. A socket copper piece 20 is respectively disposed inside the sockets of the neutral wire and the fire wire. The casing of the 5-15 type socket includes an upper casing 11 and a lower casing 12, and the upper casing 11 and the lower casing 12 are covered with each other to form an accommodating space, and the socket copper piece 20, the elliptical cam 30, the locking piece 50, and the like are disposed in the accommodating space. component. The upper casing 1 1 and the lower casing 12 are respectively provided with mounting holes of two positioning shafts 70, and the two ends of the positioning shaft 70 are respectively inserted and installed. In the mounting jack, the positioning shaft 70 is pivotally connected with a locking piece 50. The front end 51 of the locking piece 50 is provided with a hook 511, and the outer end of the tail end 52 is connected with a compression spring, and the two locking pieces 50 are connected between the inner ends of the tail ends 52. An elliptical cam 30 is disposed. The transmission shaft 40 connected to the elliptical cam 30 is disposed through the lower casing 12. The end portion of the lower casing 12 is mounted with a handle 41. When the handle 41 is rotated, the handle 41 is driven by the transmission shaft 40. The elliptical cam 30 rotates, and due to the change of the long and short axes of the elliptical cam 30, the locking piece 50 is squeezed and loosened, and the locking piece 50 can be driven by the compression spring and the elliptical cam 30 to drive the hook 511 to be inserted. Or withdrawing the circular hole of the positioning groove 23 and the plug insert, for example, when the two long axis vertices of the elliptical cam 30 respectively press the two locking pieces 50, the hook 511 is inserted into the positioning groove 23 and the plug insert In the circular hole, the plug and the socket are locked. When the two short-axis vertices of the elliptical cam 30 are respectively pressed or opposed to the two locking pieces 50, the hook 511 is in a state of pulling out the circular hole of the plug insert, so that the safety socket is provided. It can be used like a conventional socket.

[0047] The safety socket of the embodiment is based on the two round holes that must be on the US plug insert in the NEMA standard, and the two round holes on the plug insert are hooked by the hook 511 on the locking piece 50. The plug 50 is fixed to the socket and cannot be pulled out. Through the change of the rotation of the long axis and the short axis of the elliptical cam 30, the hook 511 which controls the front end 51 of the two locking pieces 50 is inserted into the positioning groove 23 of the corresponding socket copper piece 20 and the circular hole on the plug insert, and the plug is locked. Fixing on the socket; the safety socket of the embodiment, when the plug 需要 needs to be locked, only the handle 41 on the knob drive shaft 40 needs to be to the designated position. When the plug 吋 is not required, the drive shaft 40 only needs to be locked. The upper handle 41 can be used at another designated position as a conventional socket. Compared with the prior art locking structure, the structure is simple, the use is convenient, and the production cost is lower.

The above description is only a preferred embodiment of the present invention, and thus does not limit the scope of the patent of the present invention, and the equivalent structure or equivalent flow transformation made by using the specification and the drawings of the present invention, or directly or Indirect use in other related technical fields is equally included in the scope of patent protection of the present invention.

technical problem

Problem solution

Advantageous effects of the invention

Claims

Claim

[Claim 1] A safety socket comprising a housing and two socket copper sheets, further comprising an elliptical cam disposed in the housing, a transmission shaft, a locking piece, an elastic member, and a positioning shaft; An elliptical cam is disposed in the middle of the two socket copper sheets;

The transmission shaft extends through the sidewall of the housing and is fixedly coupled to the axial portion of the elliptical cam to drive the rotation of the elliptical cam;

The positioning shaft includes two, symmetrically disposed on both sides of the elliptical cam, and fixed to the inner wall of the housing;

The locking piece includes two, symmetrically disposed on two sides of the elliptical cam, and respectively pivotally connected to the corresponding positioning shafts, and opposite sides of the front ends of the two locking pieces are respectively provided with hooks; Including two, symmetrically disposed on two sides of the elliptical cam, and disposed on opposite outer sides of the tail ends of the two locking pieces, one end of the elastic member is pressed into contact with the inner side wall of the casing, and the other end is pressed to contact the corresponding The outside of the tail end of the locking piece;

a positioning groove corresponding to the circular hole on the plug insert is disposed on each side of the position where the socket copper piece is in contact with the plug insert;

When the plug is inserted into the safety socket, the elliptical cam is rotated by the transmission shaft, and the two long axis vertices of the elliptical cam respectively press the outer side of the tail end of the locking piece to rotate the locking piece along the positioning axis, the lock The tail end of the fastening piece overcomes the elastic force of the elastic member, and the hook at the front end of the locking piece is inserted into the circular hole of the plug insert through the positioning groove on the copper plate of the socket to restrict the plug from being pulled out of the safety socket; when the ellipse is driven by the transmission shaft The cam rotates, and the contact end of the elliptical cam and the locking piece changes from the apex of the long axis to the apex of the short axis, and the elastic member presses the outer side of the tail end of the locking piece to rotate the locking piece along the positioning axis, and the front end hook of the locking piece Pull out the round hole of the plug insert, and the plug can be freely pulled out of the safety socket.

[Claim 2] The safety socket according to claim 1, wherein a portion of the transmission shaft located outside the casing is provided with a handle.

[Claim 3] The safety socket according to claim 2, wherein the free end of the drive shaft is provided with an expansion chuck, the handle is provided with a mounting hole, and the handle is sleeved to the expansion card through the mounting hole It is fixed to the drive shaft on the head.

[Claim 4] The safety socket according to claim 2, wherein the outer side of the housing is provided with a limiting device that limits the rotation angle of the handle.

[Claim 5] The safety socket according to claim 4, wherein the limiting device is a baffle fixed on an outer side wall of the housing;

The handle includes a wrench portion, a square portion and a circular arc portion which are sequentially connected, and the circular arc portion is rotated along the transmission shaft and is slidably connected with the baffle. When one side of the block portion is parallel with the baffle, the baffle is The limit block continues to rotate in the direction of rotation.

[Clave 6] The safety socket according to claim 1, wherein the elastic member is a compression spring.

[Claim 7] The safety socket according to claim 1, wherein the locking piece includes a front end

, tail end and turning part;

The front end and the rear end are connected by a turning portion, the turning portion is pivotally connected to the positioning shaft; the extension lines of the front end and the tail end intersect, and the angle toward the elliptical cam direction is an obtuse angle greater than 150 degrees.