CN218415170U

CN218415170U - Novel three-pin plug

Info

Publication number: CN218415170U
Application number: CN202022585748.6U
Authority: CN
Inventors: 李欣芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2023-01-31
Anticipated expiration: 2030-10-27

Abstract

The utility model discloses a novel three-pin plug, which comprises a shell, two conductive pins, a sleeve, a third pin and a face cover; the top end of the shell is provided with a groove, the groove penetrates through the side wall of the shell to form a notch, two sides of the upper end of the notch are provided with first ribs, and the bottom wall of the groove is provided with a positioning column; the two conductive pins are arranged on the two sides of the groove and are vertical to the top end of the shell; elastic arms are arranged on two sides of the sleeve, and through holes opposite to the positioning columns are arranged on the bottom surface of the sleeve; the third pin comprises a plug-in part and a sliding connection part which are perpendicular to each other, two sides of the sliding connection part are provided with first sliding grooves for the elastic arms to slide, two positioning grooves are arranged in the first sliding grooves, and the bottom surface of the sliding connection part is provided with a second sliding groove for the positioning columns to slide; the surface cover is provided with a through hole for the conductive pin to penetrate through, the edge of the inner surface of the surface cover is provided with a first welding flange, the middle part of the surface cover is provided with a second rib opposite to the side wall of the groove, and the top end of each second rib is provided with a second welding flange. The utility model discloses small, conveniently carry, its structure is applicable to automated production, satisfies ann rule and use intensity's requirement.

Description

Novel three-pin plug

Technical Field

The utility model relates to a connect electric plug technical field, especially indicate a novel three-pin plug.

Background

A Connector (Connector) and a Pin (Pin) of an electrical appliance of a general electronic product are called as a plug. The domestic AC power supply plug and socket has a bar-shaped or copper plate-shaped projected male connector and a female connector type power supply socket which is physically inserted into a slot or a concave hole. The dimensions are an important technical requirement in relation to whether the plug and socket and the converter can be used safely and whether the universal interchangeability requirement is met to avoid misinsertions. Unqualified size can influence the user and use or produce hidden danger such as contact failure, mistake interpolation, and light then the equipment damage, can produce conflagration and electric shock accident by weight.

The two-pin plug only has a zero-wire pin and a live-wire pin, the three-pin plug has a third pin which is more than the two-pin plug, the third pin can be an earth pin or an insulated movable pin (SOD), and the third pin mainly plays a role in opening a safety pin on the socket so that the other two pins can be inserted into the socket. The ground pin has another function of grounding the metal shell of the electric appliance or directly discharging the electric appliance which is easy to generate static electricity to the ground so as to prevent unnecessary personal injury caused by electric leakage. According to the requirements related to safety size, the distance between the central lines of the two conductive pins (namely the zero wire pin and the live wire pin) and the central line of the third pin and the distance between the root of the conductive pin and the edge of the supporting surface of the third pin must reach certain values, so that the existing three-pin plug has large volume and is inconvenient to carry.

Meanwhile, most of the existing three-pin plugs are assembled by workers, the product quality is unstable, and potential safety hazards causing quality accidents exist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel tripod plug has characteristics small, conveniently carry, and its structure is applicable to automated production, satisfies the requirement of ann rule and use intensity.

In order to achieve the above purpose, the solution of the present invention is:

a novel three-pin plug comprises a shell, two conductive pins, a sleeve, a third pin and a face cover; the top end of the shell is provided with a groove, the groove penetrates through the side wall of the shell in the axis direction to form a notch, two sides of the upper end of the notch are provided with first ribs, and the bottom wall of the groove is provided with a positioning column; the two conductive pins are respectively arranged on two sides of the groove and are vertical to the top end of the shell; elastic arms are arranged on two sides of the sleeve, and through holes opposite to the positioning columns are formed in the bottom surfaces of the elastic arms; the third pin comprises a plug-in part and a sliding connection part which are perpendicular to each other, first sliding grooves for the elastic arms to be in sliding connection and matched are formed in the two sides of the sliding connection part, positioning grooves are formed in the first sliding grooves corresponding to the use state and the withdrawing state of the third pin, and second sliding grooves for the positioning columns to be in sliding connection and matched are formed in the bottom surface of the sliding connection part; the surface cover is provided with a through hole for the conductive pin to penetrate through, the edge of the outline of the inner surface of the surface cover is provided with a first welding flange, the middle part of the inner surface of the surface cover is provided with two second ribs opposite to the side walls of the groove, and the top ends of the second ribs are provided with second welding flanges; during assembly, the through hole is sleeved on the positioning column so that the sleeve is matched in the groove, the sliding connection part is inserted into the notch and movably penetrates through the sleeve, the elastic arm is in sliding fit in the first sliding groove, the positioning column is in sliding fit in the second sliding groove, the through hole is sleeved on the conductive pin, the second rib is inserted into the groove and clamped on two sides of the sleeve so that the face cover is attached to the top end of the shell, and the face cover and the shell are welded into an integral structure through ultrasonic waves.

Bending parts are arranged on two sides of one end of the sleeve, the bending parts are opposite to the notches, a third rib opposite to the bending parts is arranged on the inner side of the first rib, and the bending parts abut against the third rib to limit the movement of the sleeve during assembly.

The bottom surface of the other end of the sleeve is provided with a limiting flange, a limiting groove opposite to the limiting flange is arranged in the groove, and the limiting flange is embedded into the limiting groove.

In two constant head tanks of the third participate in, one constant head tank sets up to V type structure, and another constant head tank sets up to U type structure, and the constant head tank of V type structure corresponds the third participates in the position of withdrawing the state, the constant head tank of U type structure corresponds the third participates in the position of user state.

The bottom end of the insertion part is provided with an abdicating groove opposite to the first rib, and when the third pin is retracted, the first rib is embedded into the abdicating groove.

The sleeve and the face cover are respectively provided with a first abdicating notch and a second abdicating notch, and when the third pin is withdrawn, the bottom end of the third pin is embedded into the first abdicating notch and the second abdicating notch.

The sleeve is made of a metal material.

The section of the sleeve is rectangular.

After the technical scheme is adopted, the utility model discloses possess following advantage and technological effect:

(1) the third pin is arranged to be matched with the side wall of the shell in a sliding manner through the sleeve, the telescopic function is achieved, the size of the shell is small when a product is designed, and the third pin is convenient to store and carry;

(2) the first ribs can prevent the sleeve and the third pin from falling out of the shell in a transition stage after the sleeve and the third pin are assembled and before the surface cover is assembled, the requirement of automatic production on part positioning is met, the yield is improved, the first ribs and the surface cover form double fixation after the product is assembled, the state when the third pin is pulled out can be more stable, the third pin is prevented from being mistakenly damaged due to overlarge force in the pulling-out process, and the sleeve is further limited by the positioning columns and the through holes, so that the final product has enough use strength;

(3) the profile edge of face lid is equipped with first welding flange, its second rib top is equipped with second welding flange, respectively to face lid profile and shell top, the ultrasonic bonding is carried out to second rib and recess bottom, form dual ultrasonic bonding structure promptly, this structure can effectual enhancement whole face bonding strength of lid, even guarantee to weld and accomplish the back and receive strict impact of dropping and can not split yet, guarantee product integrality when the user uses, avoid unnecessary use risk, satisfy the ann rule requirement, adopt ultrasonic bonding can save man-hour simultaneously, save materials, realize smooth outward appearance.

Drawings

FIG. 1 is a top exploded view of an embodiment of the present invention;

fig. 2 is a bottom exploded view of an embodiment of the present invention;

FIG. 3 is a cross-sectional view of an embodiment of the present invention;

fig. 4 is a perspective view of the housing and conductive pins according to the embodiment of the present invention;

FIG. 5 is a top perspective view of a sleeve according to an embodiment of the present invention;

FIG. 6 is a bottom perspective view of a sleeve in accordance with an embodiment of the present invention;

fig. 7 is a perspective view of a third pin according to the embodiment of the present invention;

FIG. 8 is a schematic view of a retracted state according to an embodiment of the present invention;

FIG. 9 is a schematic view of a usage status of an embodiment of the present invention;

the reference numbers illustrate:

a housing 1; a groove 11; a notch 12; a first rib 13; a positioning post 14; a third rib 15; a limiting groove 16; a conductive pin 2; a sleeve 3; an elastic arm 31; a through hole 32; a bent portion 33; a position-defining flange 34; a first abdicating notch 35; a third pin 4; a plug-in portion 41; the slip joint 42; a first chute 43; a positioning groove 44; a second chute 45; a relief groove 46; a face cover 5; a perforation 51; a first welding flange 52; a second rib 53; a second welding flange 54; second yield notch 55.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.

The utility model relates to a novel three-pin plug, participate in 2, sleeve 3, third including shell 1, two electrically conductive, participate in 4 and face lid 5.

A groove 11 is formed in the top end of the shell 1, the groove 11 penetrates through the side wall of the shell 1 in the axis direction to form a notch 12, first ribs 13 are arranged on two sides of the upper end of the notch 12 to reduce the size of the upper end of the notch 12, and a positioning column 14 is arranged on the bottom wall of the groove 11;

the two conductive pins 2 are respectively arranged at two sides of the groove 11 and are vertical to the top end of the shell 1;

elastic arms 31 are arranged on two sides of the sleeve 3, and through holes 32 opposite to the positioning columns 14 are formed in the bottom surfaces of the elastic arms;

the third pin 4 comprises a plug-in part 41 and a sliding part 42 which are perpendicular to each other, both sides of the sliding part 42 are provided with first sliding grooves 43 for the sliding connection and matching of the elastic arms 31, positioning grooves 44 are respectively arranged in the first sliding grooves 43 corresponding to the use state and the retraction state of the third pin 4, and the bottom surface of the sliding part 42 is provided with a second sliding groove 45 for the sliding connection and matching of the positioning column 14;

the surface cover 5 is provided with a through hole 51 for the conductive pin 2 to pass through, the edge of the inner surface profile is provided with a first welding flange 52, the middle part of the inner surface is provided with two second ribs 53 opposite to the side walls of the groove 11, and the top ends of the second ribs 53 are provided with second welding flanges 54;

during assembly, the through hole 32 is sleeved on the positioning post 14 to enable the sleeve 3 to be matched in the groove 11, the sliding connection part 42 is inserted into the notch 12 and movably arranged in the sleeve 3 in a penetrating way, the elastic arm 31 is in sliding fit in the first sliding groove 43, the positioning post 14 is in sliding fit in the second sliding groove 45, the through hole 51 is sleeved on the conductive pin 2, the second rib 53 is inserted into the groove 11 and clamped on two sides of the sleeve 3 to enable the face cover 5 to be attached to the top end of the shell 1, and the face cover 5 and the shell 1 are welded into an integral structure through ultrasonic waves.

Referring to fig. 1-7, a specific embodiment of the present invention is shown.

Both sides of one end of the sleeve 3 are provided with bent parts 33, the bent parts 33 are opposite to the notches 12, the inner side of the first rib 13 is provided with a third rib 15 opposite to the bent parts 33, the bent parts 33 are abutted against the third rib 15 to limit the movement of the sleeve 3 during assembly, and the third rib 15 can strengthen the strength of the side wall of the shell 1 provided with the notches 12 so as to prevent the side wall of the notch 12 from being damaged by mistake due to overlarge force of a user in the process of pulling out the third pin 4.

Another tip bottom surface of above-mentioned sleeve 3 is provided with limit flange 34, is provided with the spacing groove 16 relative with limit flange 34 in the recess 11, and limit flange 34 imbeds in the spacing groove 16 to further realize the spacing of sleeve 3 in recess 11, prevent its removal, thereby guarantee the stability of quality of structural strength and product.

One of the two positioning grooves 44 of the third pin 4 is configured as a V-shaped structure, and the other positioning groove 44 'is configured as a U-shaped structure, wherein the positioning groove 44 of the V-shaped structure corresponds to the position of the third pin 4 in the retracted state, and the positioning groove 44' of the U-shaped structure corresponds to the position of the third pin 4 in the use state. The slope of the V-shaped structure is larger, so that the third pin 4 can be pulled out to a use state easily in a retraction state, the slope of the U-shaped structure is steeper, so that the third pin 4 is more stable in the use state, and when the third pin 4 is inserted into a socket, the third pin 4 cannot be pushed back due to the stress of the third pin 4 before being inserted into the socket jack, so that a plug cannot be inserted into the socket.

The bottom end of the insertion part 41 is provided with an abdicating groove 46 opposite to the first rib 13, and when the third pin 4 is retracted, the first rib 13 is inserted into the abdicating groove 46.

The sleeve 3 and the face cover 5 are respectively provided with a first abdicating notch 35 and a second abdicating notch 55, and when the third pin 4 is withdrawn, the bottom end of the third pin 4 is embedded into the first abdicating notch 35 and the second abdicating notch 55.

The sleeve 3 is made of metal material, and the section of the sleeve is rectangular, so that the assembling direction of the third pin 4 can be ensured, and the instability of the third pin 4 caused by the rotation of the sliding connection part 42 in the sleeve 3 in the use process can be avoided.

Referring to fig. 8 and 9, when the plug is not used, the third pin 4 can be added to withdraw the shell 1, and when the plug is used, the third pin 4 can be added to pull out the shell 1, so that the thickness of the shell 1 is much smaller, i.e. the whole volume is smaller, compared with the traditional structure of the three-pin plug.

Through the scheme, the third pin 4 is arranged to be matched with the side wall of the shell 1 in a sliding manner through the sleeve 3, the telescopic function is achieved, the size of the shell 1 is small during product design, and the storage and carrying are convenient;

after the sleeve 3 and the third pin 4 are assembled, the first rib 13 can prevent the sleeve 3 and the third pin 4 from falling out of the shell 1 in a transition stage before the face cover 5 is assembled, the requirement of automatic production on part positioning is met, the yield is improved, and after the product is assembled, the first rib 13 and the face cover 5 form double fixation, so that the state when the third pin 4 is pulled out is more stable, the third pin 4 is prevented from being mistakenly damaged due to overlarge force in the pulling-out process, and the positioning column 14 and the through hole 32 further limit the sleeve 3, so that the final product has enough use strength;

the profile edge of face lid 5 is equipped with first welding flange 52, its second rib 53 top is equipped with second welding flange 54, respectively to face lid 5 profile and shell 1 top, second rib 53 carries out ultrasonic bonding with recess 11 bottom, form dual ultrasonic bonding structure promptly, the bonding strength of whole face lid 5 of this structure can effectual enhancement, even if guarantee to weld and accomplish the back and receive strict impact of dropping and can not split, guarantee product integrality when the user uses, avoid unnecessary use risk, satisfy the ann rule requirement, adopt ultrasonic bonding can save man-hour simultaneously, save the material, realize smooth outward appearance.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should be considered as not departing from the scope of the present invention.

Claims

1. A novel three-pin plug is characterized in that: the shell, the two conductive pins, the sleeve, the third pin and the surface cover are included;

the top end of the shell is provided with a groove, the groove penetrates through the side wall of the shell in the axis direction to form a notch, two sides of the upper end of the notch are provided with first ribs, and the bottom wall of the groove is provided with a positioning column;

the two conductive pins are respectively arranged on two sides of the groove and are vertical to the top end of the shell;

elastic arms are arranged on two sides of the sleeve, and through holes opposite to the positioning columns are formed in the bottom surfaces of the elastic arms;

the third pin comprises a plug-in part and a sliding connection part which are perpendicular to each other, first sliding grooves for the elastic arms to be in sliding connection and matched are formed in the two sides of the sliding connection part, positioning grooves are formed in the first sliding grooves corresponding to the use state and the withdrawing state of the third pin, and second sliding grooves for the positioning columns to be in sliding connection and matched are formed in the bottom surface of the sliding connection part;

the surface cover is provided with a through hole for the conductive pin to penetrate through, the edge of the outline of the inner surface of the surface cover is provided with a first welding flange, the middle part of the inner surface of the surface cover is provided with two second ribs opposite to the side walls of the groove, and the top ends of the second ribs are provided with second welding flanges;

during assembly, the through hole is sleeved on the positioning column so that the sleeve is matched in the groove, the sliding connection part is inserted into the notch and movably penetrates through the sleeve, the elastic arm is in sliding fit in the first sliding groove, the positioning column is in sliding fit in the second sliding groove, the through hole is sleeved on the conductive pin, the second rib is inserted into the groove and clamped on two sides of the sleeve so that the face cover is attached to the top end of the shell, and the face cover and the shell are welded into an integral structure through ultrasonic waves.

2. A novel three-prong plug as defined in claim 1, wherein:

3. A novel three-pin plug as claimed in claim 1, wherein:

and a limiting flange is arranged on the bottom surface of the other end of the sleeve, a limiting groove opposite to the limiting flange is arranged in the groove, and the limiting flange is embedded into the limiting groove.

4. A novel three-pin plug as claimed in claim 1, wherein:

in the two positioning grooves of the third pin, one positioning groove is of a V-shaped structure, the other positioning groove is of a U-shaped structure, the positioning groove of the V-shaped structure corresponds to the position of the retracting state of the third pin, and the positioning groove of the U-shaped structure corresponds to the position of the using state of the third pin.

5. A novel three-prong plug as defined in claim 1, wherein:

6. A novel three-prong plug as defined in claim 1, wherein:

7. A novel three-prong plug as defined in claim 1, wherein:

the sleeve is made of a metal material.

8. A novel three-prong plug as defined in claim 1, wherein:

the section of the sleeve is rectangular.