WO2019022313A1

WO2019022313A1 - Device for holding and latching elevating plate of wall outlet

Info

Publication number: WO2019022313A1
Application number: PCT/KR2017/014614
Authority: WO
Inventors: 신헌수
Original assignee: 주식회사 태주산업
Priority date: 2017-07-26
Filing date: 2017-12-13
Publication date: 2019-01-31

Abstract

The present invention relates to a device for holding and latching an elevating plate of a wall outlet, wherein a first and a second cam groove are formed at both sides of a cam protruding from the center of the bottom surface of the elevating plate, and a first and a second latch portion formed by bending both ends of a U-shaped intermittent pin to be positioned opposite to each other are inserted into the first and the second cam groove, respectively, such that the elevating plate is latched and held by the latch portions through up-and-down movements of the elevating plate. Therefore, the cam grooves can be formed in a flat form, the elevating plate is moved while being supported by the two latch portions at both sides of the cam and thus can be prevented from being separated or damaged even when the elevating plate is twisted or frequently moved up and down, and even with long-term use, a failure of the elevating plate can be prevented.

Description

Steel plate hold and latch device of outlet

The present invention relates to a lifting plate holder and a latch device of an outlet, and more particularly, to a lifting plate holder and a latch device of a receptacle capable of achieving stable latching of a lifting and lowering failure.

Generally, when power is used in a home, an office or a work site, a plug connected to household electrical appliances and a wire is plugged into an outlet installed on a wall, or a plug is inserted into a multi-tap outlet connected to the outlet.

These plugs should be plugged into the receptacle when plugged in, and pulled out of the receptacle when plugged out. However, when the plug was disconnected from the outlet, it was very inconvenient because it did not fall very easily, and when the power was excessive, the outlet was damaged.

In order to solve such a problem, Korean Patent Registration No. 10-917871 filed by the applicant of the present application discloses a case in which a top surface is opened and a connection terminal is fixed to a lower inner side; A lifting plate coupled to the inside of the case and moved up and down, the lifting plate having at least one insertion hole into which a connection pin of the power connection plug is inserted; And a connecting pin of the power connection plug is inserted into the insertion hole to lower the lift plate in the lower direction of the case so that the lift plate is lowered and fixed while the connection terminal and the connection pin are in contact with each other, And a lifting operation portion that elastically lifts the lifting plate and separates the connection terminal from the connection pin when the plug is pushed downward in the state that the connection pin is in contact with the case.

According to this structure, the plug and the outlet are engaged and separated only by the operation of pressing the plug toward the outlet, so that the plug and the outlet can be joined or separated with only one hand, so that the plug can be easily combined and separated.

However, in the socket provided with the lifting plate, a latch and a holding structure are required which cause the lifting plate to rise when the lifting plate is pressed down and latched down when pressed.

A lifting plate fixing part for fixing the lifting plate and a latching part having a protrusion formed on the lifting plate fixing part and being an end of the protrusion are formed in the latching groove, As the protrusions are lowered, the protrusions are rotated and the protrusions are moved along the protrusions and latched. When the protrusions are pressed again, they are returned to their original positions. Therefore, since the protruding portion of the steel plate fixing portion rotates along the engaging groove, the structure is complicated and causes a trouble in long-term use.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a socket for an outlet with a lift plate that latches the lift plate in a state in which the lift plate is lowered when the lift plate is pressed and released in an initial state, Hold and latch device.

In order to achieve the above object, according to the present invention, there is provided a lifting plate holding and latching device for lifting and lowering a lifting plate lifted and lowered inside a case of an outlet by a pressing force of a lifting plate and a restoring force of a return spring, In a state in which a first cam groove is formed on one surface and a second cam groove is formed on a back surface of the lift plate, A cam; The first and second latching portions are inserted into the first and second cam grooves, respectively, so that the first and second latching portions are inserted into the first and second cam grooves, respectively, And a U-shaped intermittent pin for controlling the hold and latch of the lifting plate while the first and second engaging portions are moved along the first and second cam grooves on the basis of the rising and falling.

Wherein the first cam groove and the second cam groove have a first channel that is a path through which the first and second engaging portions of the intermittent pin move from the initial position to the first hold position when the initial steel plate is pressed, The first and second latching portions of the intermittent pin are moved from the first holding position to the latching position to latch the lifting plate to the lowering position, A third channel which is a path in which the first and second latching portions of the intermittent pin move from the latch position to the second hold position when the lifting plate is pressed at the latch position of the second channel, And a fourth channel which is a path through which the lifting plate is raised by the return spring to return the first and second latching portions of the intermittent pin from the second hold position to the initial position.

Wherein the first cam groove includes a holding protrusion for restricting the latching portion from being engaged with the first holding position of the first channel and a latch protrusion for restricting the latching portion from being latched in the latching position of the second channel, A first inclined guide portion which is engaged with an upper inclined surface of the second retaining portion which is moved at the initial position to ride on an inclined surface to the first channel and a second inclined guide portion which is lowered at the first hold position by a lower inclined surface A second latching portion for latching the slant surface on the upper side and moving to a second holding position which is farther from the virtual center line than the latching position on the slant surface; And a third inclined guide portion for guiding the second inclined guide portion.

And the first and second cam grooves are planar cam grooves whose bottom surfaces have no step.

The first and second cam grooves may further include an inlet portion opened to an end of the cam at a lower portion of the initial position.

The first and second cam grooves are formed such that when the lifting plate of the initial state is pressed, the first and second engaging portions of the intermittent pin are moved downward by the first inclination guide formed in any one of the first and second cam grooves at the initial position (B-B ') from the imaginary center line (C-C') while being guided by the first and second hold positions (2, 3) A first channel formed so that, after the additional mutual twist occurs, the hooked part moved to a long distance from the first hold position (2) is moved to a close distance and the twist is eliminated; When the lifting plate is lifted by the return spring after the movement of the first channel is released, the first and second latching portions of the intermittent pin are formed in any one of the first and second cam grooves at the first hold position Is guided by the second inclined guide portion and is moved to the latch position? Having the latch protrusion formed on the other one of the first and second cam grooves, and the second inclined guide portion is caught by the first and second latching portions at the latch position? A second channel formed so as to latch the lift plate so as not to be lifted; and a second channel formed so that the lift plate is lowered when the lift plate in the latched state is depressed, so that the first and second engagement portions of the intermittent pin A third channel which is guided by the inclined guide portion and is moved to a second hold position? Located at a greater distance from the virtual center line than the latch projection; When the lifting plate is released after the third channel is moved, the lifting plate is raised by the return spring so that the first and second latching portions of the intermittent pin are guided to the outside of the latch projection to return to the initial position And four channels.

According to the present invention, there is provided a lifting plate holding and latching device for lifting a lifting plate in a downward state when the lifting plate is pressed and released in an initial state, and returning the lifting plate to an initial state when the lifting plate is pressed and released in a latched state .

Further, according to the present invention, a cam groove is formed on both sides of a cam, and two engaging portions bent at opposite ends of the U-shaped intermittent pin are inserted into the cam grooves on both sides to move the cam groove, There is an effect that can be.

In addition, since the engaging portions are respectively inserted into the cam grooves formed on both sides of the cam, the engaging portions are prevented from moving or being separated from the cam grooves during operation due to the raising and lowering of the raising and lowering plate.

In addition, since the two latch portions latch the lifting plate stably through the cam grooves on both surfaces, the failure rate due to deformation or detachment of the engaging portion and the cam groove can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a main part of a socket provided with a lifting plate to which the present invention is applied. FIG.

2 (a) and 2 (b) are diagrams showing a required operation state of an outlet provided with a lift plate to which the present invention is applied.

3 is an exploded view of a main portion for explaining a lifting plate holder and a latch structure according to the present invention.

FIG. 4 is an enlarged schematic view of a main portion for explaining a lifting plate holder and a latch structure according to the present invention; FIG.

Fig. 5 is an explanatory view for explaining the relationship between the lifting plate holder of the receptacle and the engaging portion of the latch device of the present invention. Fig.

6 (a) and 6 (b) are explanatory views of an operation in which the lift plate is lowered and latched when the lift plate in the initial state according to the present invention is pressed and released.

7 (a) and 7 (b) are diagrams for explaining the operation of returning to the initial position when the lifting steel plate according to the present invention is pressed and released.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a main portion of a socket provided with a lift plate to which the present invention is applied. FIG.

As shown in the drawings, an outlet with a lifting plate according to the present invention is an exploded perspective view of internal components excluding the outlet case. The upper lifting plate 11, the composite slide shutter 20, the lower lifting plate A cam 40 having a cam groove 400 for raising and lowering the lift steel plate 10 and a twist intermittent pin 50 and a lower body 60 provided with a connection terminal therein.

In this figure, reference numeral 100 denotes a composite type pin inserting hole, which shows a plurality of types of pin inserting holes that can be applied to all types of plug pins according to the shape of the plug pin. However, since it is not directly related to the holding and latching apparatus of the steel sheet according to the present invention, it will not be described in the following description.

2 (A) and 2 (B) are diagrams showing a required operation state of a receptacle provided with a lift plate to which the present invention is applied. A composite slide shutter 20 is provided between the upper side lift plate 11 and the lower side lift plate 12 and a cam projected to the lower center of the lower side lift plate 12 as shown in Figure 2 (a) A twist intermittent pin 50 is coupled to the lower body 60 at a corner of the lower body 60 and a return spring 70 is provided at a support boss of the upper layer steel plate 10 at a corner of the lower body 60, And is coupled to the boss lifting groove.

The upper and

lower steel plates

11 and 12 and the lower body 60 are provided with a pin insertion hole 100 corresponding to the plug connection pin and are inserted into the slide shutter 20 ) Opens the pin insertion hole. As a result, the lifting plate 10 (11, 12) descends while compressing the return spring 70, and the relationship between the twist intermittent pin 50 and the cam 40 And the plug connection pin inserted through the pin insertion hole 100 is inserted into the connection terminal in the lower body 60 to make the electrical connection.

The lifting plate 10 is slightly lowered due to the mutual relationship between the twist intermittent pin 50 and the cam 40 when the lifting plate 10 is pushed thereafter and then the lifting plate 10 is lifted up by the restoring force of the return spring 70 The plug pin can be released from the connection terminal of the lower body and the plug can be easily removed.

FIG. 3 is an exploded view of a main part for explaining a lifting plate holder and a latch structure according to the present invention, and FIG. 4 is an enlarged schematic view of a main part for explaining a lifting plate holder and a latch structure according to the present invention.

There is a need for a lifting plate holder and a latch device which are latched in a lowered state when the lifting plate 10 is pushed as described above and the latch is released when the lifting plate 10 is pushed down. The holding and latching apparatus of the lifting plate includes a cam 40 provided on the lower surface of the lifting plate 10, first and

second cam grooves

410 and 420 formed on both sides of the cam 40, And an intermittent fin 50 that is pivotally mounted on the first and

second cam grooves

410 and 420. The intermittent fin 50 is pivotally mounted on the first and

second cam grooves

410 and 420, And the first and second

engaging portions

51 and 52 are formed of the first and

second cam grooves

410 and 420 on the basis of the rising and falling of the lifting plate 10, And is configured to hold and latch the lifting and lifting of the lifting plate 10 while being guided and moved in accordance with the shape of the lifting plate 10.

Fig. 5 is an explanatory view of the relationship between the lifting plate holder of the receptacle and the latching portion of the latch device according to the present invention.

The first cam groove 410 and the second cam groove 420 are formed in such a manner that when the lift plate 10 is lowered when the lift plate 10 in the initial state is pressed, the first and second engagement portions The

first channel

411 and 421 in which the first and

second channels

51 and 52 are moved and the return spring 70 when the lift of the lift plate 10 is released after the movement of the

first channels

411 and 421, The first and second

latching portions

51 and 52 of the intermittent pin 50 are moved from the first hold position to the latch position and the second channel 412 And the first and second

latching portions

51 and 52 of the intermittent pin 50 at the latching positions of the second channel 412 and 422 at the latching position A third channel 413 and a third channel 413 which are shifted to the second hold position and a return spring 70 when the lift plate 10 is released after the

third channels

413 and 423 are released The first and second

latching portions

51 and 52 of the intermittent pin 50 are returned to the initial position from the second hold position while the lifting plate is lifted, 414) < / RTI >

When the plug is inserted in the initial position and then the hand is released, the first and second

engaging portions

51 and 52 are moved through the

first channels

411 and 412 while the lifting plate is lowered, The lift plate is raised by the return spring 70 and is moved to the latch position via the second channel 412 and 422 to latch the lift plate 10. [ The first and second

latching portions

51 and 52 are moved to the second hold position through the

third channels

413 and 423 while the lifting plate 10 is lowered by pressing the plug in the latch state, The lift plate 10 is raised by the restoring force of the return spring 70 so that the first and second

latching portions

51 and 52 are returned to their initial positions.

In order for the first and second latching

portions

51 and 52 to move from the first channel to the fourth channel in order, the cam groove should have a holding portion for guiding the movement of the latch portion and restricting the position.

To this end, the first cam groove 410 includes a holding protrusion 402 for restricting the first latching portion 51 from being engaged with the first holding position of the first channel 411, A latch projection 404 is formed to limit the first latching portion 51 to the latching position of the first latching portion 412.

The second cam groove 420 is provided with a first inclined guide portion 401 for allowing the second engaging portion 52 to move from the initial position to the first channel 421 while being hooked on the upper inclined surface, A second inclined guide portion 403 for moving the second engaging portion 52 lowered at the first hold position to the latch position while being hooked on the lower inclined surface to ride on the inclined surface, And a third inclined guide portion 405 for causing the second engaging portion 52 to be hooked on the upper inclined surface to move the inclined surface to the second hold position at a greater distance from the virtual center line than the latch position.

Therefore, when the lifting plate is lowered at the initial position, the second hooking part 52 is hooked on the first inclined guide part 401 to move the hooking part with the first channel 421. [ When the lifting plate 10 is lifted at the first holding position, the second engaging part 52 is engaged with the second inclined guiding part 403, and is moved to the latch position on the inclined surface. When the lifting plate is depressed in the latched state, the second latching portion 52 is caught by the third inclined guide portion 405 and is moved to the second holding position on the inclined surface.

In addition, according to the present invention, when the first and second

latching parts

51 and 52 in the first channel are twisted at the first hold position after the twist is released, the second latching part 52 is engaged with the second inclined guide part 403, which is closer to the imaginary center line. Therefore, when the elevating plate is raised at the first holding position, the second engaging portion 52 is caught by the second inclined guide portion 403 and is moved to the latch position on the inclined surface. Therefore, even though the first and

second cam grooves

410 and 420 of the present invention may be constituted by a planar cam groove having no step on the bottom surface thereof, the first and

second cam grooves

410 and 420 may be formed by the first channel-> An operation of sequentially circulating the third channel to the fourth channel may be performed.

In addition, the first and

second cam grooves

410 and 420 are opened at the lower end of the initial position to the end of the cam 40 and open to the end of the cam. Therefore, the first and

second locking portions

51 and 52 can be easily inserted into the first and

second cam grooves

410 and 420 from the lower portion of the cam during the assembling process.

The relationship between the first and

second cam grooves

410 and 420 of the present invention and the first and

second locking portions

51 and 52 will be summarized as follows.

When the lift plate 10 in the initial state is pressed, the lift plate 10 is lowered so that the first and second engagement portions 51 and 52 of the intermittent fin 50 are moved in the first and second Is guided by the first inclined guide portion 401 formed in any one of the cam grooves 410 and 420 and is moved to the first hold position 2 so that the distance A- After the first and second latching parts 51 and 52 are mutually twisted while passing through the movement path of the first holding position A 'and the second holding position B' A first channel (411) (421) formed so as to be twisted while being moved to a close distance; When the lifting of the lifting plate 10 is released after the movement of the first channel 411 and 421, the lifting plate 10 is lifted by the return spring 70 and the first and second engaging The portions 51 and 52 are guided by the second inclined guide portion 403 formed in any one of the first and second cam grooves 410 and 420 at the first hold position (3) in which the latch projections 404 formed on the other one of the two cam grooves 410 and 420 are located and the first and second latching parts 51 and 52 move in the latch position A second channel 412 (422) formed to engage the second inclined guide portion 403 to latch the lift plate 10 so as not to lift; When the lifting plate 10 in the latched state is pressed, the lifting plate 10 is lowered so that the first and second engaging portions 51 and 52 of the intermittent pin 50 are engaged with the first and second cam grooves 410 A third channel 413 which is guided by a third inclined guide portion 405 formed on any one of the first and second latching portions 420 and 420 to be moved to a second hold position (4) 423); When the lift of the lift plate 10 is released after the movement of the third channels 413 and 423, the lift plate 10 is lifted by the return spring 70 and the first and second A fourth channel (414) (424) formed such that the latching portions (51) and (52) are guided to the outside of the latch protrusion (404) to return to the initial position (1); And a control unit.

The first and

second cam grooves

410 and 420 are formed on one surface 41 of the cam 40 and the back surface 42 corresponding thereto. Both ends of the intermittent fin 50 are bent from the upper side so as to face each other to form the first and

second fastening portions

51 and 52. The first and

second latching parts

51 and 52 are inserted into the first and

second cam grooves

410 and 420 and are moved along the cam groove by the lifting and lowering of the lifting plate 10, And the latch and the latch of the memory cell.

Here, the holding of the lifting plate 10 is referred to as holding when the lifting plate 10 is temporarily stopped at a position where the lifting is restricted when the lifting plate 10 is pressed, It is expressed.

6 (a) and 6 (b) are explanatory diagrams of states in which the lifting plate is lowered and latched when the lifting plate in the initial state according to the present invention is pressed and released.

The initial state is a standby state in which the lifting plate 10 is lifted from the inside of the case of the receptacle, and the lifting plate is held in a state of being lifted to the maximum. The first and

second latching portions

51 and 52 of the intermittent fin 50 are engaged with the first and

second cam grooves

410 and 42 formed respectively on one surface of the cam 40 and the rear surfaces 41 and 42 (420) and stopped at the initial position (1).

6 (a), when the plug is inserted into the lifting plate 10 in the initial state, the lifting plate 10 is pressed. When the lifting plate 10 is pressed down, the lifting plate 10 is lowered so that the first and second engaging

portions

51 and 52 are lifted at the initial position (1) to the first holding position (2) (411 421).

The second inclined guide portion 401 is formed in the second cam groove 420 so that the second inclined portion 52 rising at the initial position ① is engaged with the first

inclined guide portion

401, 421, respectively. At this time, since the first engaging part 51 is not engaged with the first cam groove 410 and the second engaging part 52 is moved to the first channel 421, (411). Accordingly, when the lifting plate 10 is pushed, the first and

second latching parts

51 and 52 can be moved into the

first channel

411 and 421 at the initial position (1).

The

first channels

411 and 421 are formed as a path in which the first and

second locking portions

51 and 52 are twisted and the twist is released at the first holding position (2). This is because the second cam groove 421 is formed to be raised to the first hold position (2) by turning a distance longer than the first cam groove 411 when the first cam groove 411 is moved to the upright rising section, The second engaging part 52 is formed to be extended to the same distance as the first engaging part 51 by forming a space enlarged toward the imaginary center line in the second engaging part (2).

That is, since the first and

second latching parts

51 and 52 are moved at different distances from the virtual center line when moving along the

first channels

411 and 421, The second engaging portion 52 is pulled to the same distance as the first engaging portion 51 and the twist is released. The virtual center line represents a virtual center line C-C 'passing through the initial position (1) and the latch position (3) perpendicularly, and the distance represents a distance from the virtual center line (C-C').

The reason for causing the twisting to occur so that the second engaging portion 52 returns to a long distance is to form the second inclined guide portion 403 in the second cam groove 421. [ In other words, the second inclined guide portion 403 is vertically moved from the first holding position (1) so as to be caught by the second inclined guide portion 403 and can be moved along the inclined surface.

Accordingly, when the lift plate 10 in the initial state is pressed, the first and second engagement portions are moved and held from the initial position to the first hold position. When the pressing force is removed, (10) is raised.

When the lifting plate 10 is lifted, the first and second engaging

portions

51 and 52 at the first hold position (2) are lowered and the second inclined guide portion 403 The second engaging portion 52 is engaged and slidably moves on the inclined surface. At this time, since the first latching portion 51 does not have the latching portion, it can be moved to the latching position (3) by the movement of the second latching portion 52. The first and

second latching portions

51 and 52 which have been moved by the second inclined guide portion 403 are engaged with the latching protrusion 404 formed in the first cam groove 410 by the first latching portion 51, And the first and

second latching portions

51 and 52 are latched in the state where the first and

second latching portions

51 and 52 are engaged with the second inclined guide portion 403. As a result, the lifting plate 10 is latched in a state in which the first and

second latching portions

51 and 52 are latched in the latch position (3), and is stopped in the lowered state.

7 (a) and 7 (b) are explanatory diagrams of operations in which the steel sheet in the descending state according to the present invention is returned to its initial position after being pressed.

When the plug is pressed to press the plug with the lifting plate 10 lowered and latched, the lifting plate 10 is pressed and the first and second engaging

portions

51 and 52 are moved to the third channel (41) and (42) to the second hold position (4). At this time, the second inclined guide portion 405 is formed on the upper side of the second cam groove 421 so that the second engaging portion 52 is inclined and moved to the second hold position (4). The second holding position (4) is formed at a greater distance from the virtual center line than the latch projection (404), and when the second holding position is lowered at the second holding position (2), the latch can be guided outside the latch projection (404). Therefore, when the pushing force of the lifting plate 10 is removed, the first and second hooking

portions

51 and 52 are moved to the initial position (1) through the

fourth channel

414 and 424 by the restoring force of the return spring 70 ).

According to the present invention as described above, the cam 40 is formed on the steel plate 10, the

cam grooves

410 and 420 are formed on the both

surfaces

41 and 42, and the upper ends of the U- The first and second engaging

portions

51 and 52 are formed so as to be able to move along the first and

second cam grooves

410 and 420. At this time, after the twist in the first channel is generated, the torsion is released at the first holding position, and when the first torsion is lowered at the first holding position, the twist guide can be caught. In addition, when the lifting plate is pressed at the latch position, the third inclined guide portion is moved to the second hold position outside the latch projection to return to the initial position when descending from the second hold position. Therefore, unlike the related art in which the depth of the cam groove is configured to have a multi-layer structure for changing the state of the hold and the latch, a planar type cam groove having a constant depth of the cam groove can be realized.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications, and variations will readily occur to those skilled in the art without departing from the spirit and scope of the invention. Therefore, it should be understood that the disclosed embodiments are to be considered in an illustrative rather than a restrictive sense, and that the true scope of the invention is indicated by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof, .

Claims

In a steel plate holding and latching device of a socket-outlet receptacle for latching the steel plate in a state in which the steel plate is lowered when the steel plate is pressed and released in an initial state,

A cam protruding from a central lower surface of the lifting plate, having a first cam groove formed on one surface thereof and a second cam groove formed on a rear surface thereof;

The first and second latching portions are inserted into the first and second cam grooves, respectively, so that the first and second latching portions are inserted into the first and second cam grooves, respectively, A U-shaped intermittent pin for controlling the holding and latching of the lifting plate while the first and second latching portions are moved along the first and second cam grooves on the basis of the rising and falling;

And a latching device for latching the lifting plate.
2. The image forming apparatus according to claim 1, wherein the first cam groove and the second cam groove,

A first channel that is a path through which the first and second engaging portions of the intermittent pin move from the initial position to the first hold position when the initial steel plate is pressed,

When the lifting plate is released after the first channel is moved, the lifting plate is lifted by the return spring, and the first and second latching portions of the intermittent pin are moved from the first holding position to the latching position to latch the lifting plate to the lowering position A second channel,

A third channel which is a path along which the first and second latching portions of the intermittent pin move away from the latch position to the second hold position when the lifting plate is pressed at the latch position of the second channel,

After the third channel is moved, when the lifting plate pressing is released, the lifting plate

And a fourth channel which is a path through which the first and second latching portions of the intermittent pin are returned from the second hold position to the initial position when the intermittent pin is lifted up.
3. The apparatus of claim 2, wherein the first cam groove

And a latch protrusion for restricting the latching portion of the second channel from being engaged with the latching portion,

In the second cam groove,

The second latching portion moved from the initial position is caught by the upper slope surface,

A second inclined guide portion which is engaged with a lower inclined surface of the second stopper portion which is lowered at the first hold position and is moved to a latch position while taking an inclined surface; And a third inclined guide portion for causing the second latching portion lifted at the second latching portion to be moved from the latching position to the second hold position at a greater distance from the virtual center line than the latching position by being hooked on the upper slanting surface, And a latch device.
3. The apparatus of claim 2, wherein the first and second cam grooves

And the bottom surface is a flat type cam groove with no step.

Hold and latch device.
3. The apparatus of claim 2, wherein the first and second cam grooves

And an inlet portion opened to the end of the cam at the lower portion of the initial position

Features of an outlet for lift plate hold and latch device.
In a steel plate holding and latching device of a socket-outlet receptacle for latching the steel plate in a state in which the steel plate is lowered when the steel plate is pressed and released in an initial state,

A cam protruding from a central lower surface of the lifting plate, having a first cam groove formed on one surface thereof and a second cam groove formed on a rear surface thereof;

The first and second latching portions are inserted into the first and second cam grooves, respectively, so that the first and second latching portions are inserted into the first and second cam grooves, respectively, A U-shaped intermittent pin for controlling the holding and latching of the lifting plate while the first and second latching portions are moved along the first and second cam grooves on the basis of the rising and falling; / RTI >

Wherein the first and second cam grooves

When the lifting plate is pressed in the initial state, the lifting plate is lowered so that the first and second hooking portions of the intermittent pin are guided by the first inclined guide portion formed at one of the first and second cam grooves at the initial position (1) 2, and after the first and second latching parts are mutually twisted while passing through the movement path of different distances AA 'and B-B' from the imaginary center line C-C ' A first channel formed so as to be twisted while the latch part moved to a long distance from the position (2) is moved to a near distance;

When the lifting plate is lifted by the return spring after the movement of the first channel is released, the first and second latching portions of the intermittent pin are formed in any one of the first and second cam grooves at the first hold position Is guided by the second inclined guide portion and is moved to the latch position? Having the latch protrusion formed on the other one of the first and second cam grooves, and the second inclined guide portion is caught by the first and second latching portions at the latch position? A second channel formed to latch the lifting plate unremoved;

When the lifting plate in the latched state is pressed, the lifting plate is lowered so that the first and second latching portions of the intermittent pin are guided by the third inclined guide portion formed in any one of the first and second cam grooves, A third channel that is moved to a second hold position? Of a longer distance;

After the movement of the third channel, if the pressing of the lifting plate is released,

As the lifting plate is lifted, the first and second latching portions of the intermittent pin are guided to the outside of the latch projection

And a fourth channel formed to return to the initial position (1).