Dual-protection switch socket

Abstract

The present invention discloses a dual-protection switch socket, which includes a socket, a jack component and a first elastic component. The socket is provided with a metal component; the jack component is arranged on the socket and can be switched between an unlocking position and a locking position. The jack component has a first jack. When the jack component is in the unlocking position, the jack component can rotate to force the first jack to correspond to the metal component. When the jack component is in the locking position, the jack component is locked so that the first jack is misaligned with the metal component; the first elastic component is arranged on the socket and abuts against the jack component. Under the elastic force of the first elastic component, the jack component is restricted by the first elastic component in the locking position. The present invention can prevent the socket from conducting electricity when directly inserted, has better protection measures, avoids the risk of electric shock caused by children's contact, and has higher safety.

Description

Technical Field

[0001] The present invention relates to the technical field of sockets, and particularly relates to a double-protection switching socket. Background Art

[0002] Sockets are electrical products that people must use in daily life and are used to provide a circuit access interface for electrical appliances. Common sockets do not have safety components installed, and it is easy to cause electric shock when a user inserts a plug into the socket. For example, when children use a socket, they are likely to insert their fingers into the socket holes or touch the metal inserts of the plug, resulting in their fingers being electrified. The inventor found that in related technologies, when a foreign object is inserted or a relatively heavy metal is inserted, it can be directly inserted and conduct electricity in a direct insertion situation, which poses a significant safety problem. Especially for children's use, the current protection measures of sockets are insufficient, the protection effect is not good, and it is easy to cause the risk of electric shock to children. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the related technologies to some extent. For this purpose, an object of the present invention is to provide a double-protection switching socket, including:

[0004] A socket provided with a metal part;

[0005] A jack part provided on the socket and switchable between an unlocked position and a locked position. The jack part has a first jack. When the jack part is in the unlocked position, the jack part can rotate to force the first jack to correspond to the metal part. When the jack part is in the locked position, the jack part is locked so that the first jack is misaligned with the metal part;

[0006] A first elastic member provided on the socket and abutted against the jack part. Under the elastic force of the first elastic member, the jack part is restricted by the first elastic member in the locked position.

[0007] Preferably, according to an embodiment of the present invention, the socket includes:

[0008] A bottom case;

[0009] A face case fixed to the bottom case and defining an accommodation cavity;

[0010] A receiving member provided in the accommodation cavity. The metal part is embedded in the receiving member. The receiving member is provided with a second jack corresponding to the metal part, so that a plug sequentially passes through the first jack and the second jack to be plugged into the metal part.

[0011] Preferably, according to one embodiment of the present invention, an annular groove is provided on the receiving member and is located in the circumferential direction of the second plug hole, the first elastic member is embedded in the annular groove, the surface shell has a through hole corresponding to the annular groove, the plug hole member is embedded in the through hole and is sleeved on the top of the first elastic member.

[0012] Preferably, according to an embodiment of the present invention, a clamping groove and a guide groove are provided on the peripheral wall of the through hole, the clamping groove is adjacently arranged above the guide groove, the jack has a stopper in the circumferential direction, and the stopper extends into the clamping groove in the radial direction;

[0013] Under the elastic force of the first elastic member, the socket member is elastically pushed by the first elastic member to force the stop portion to be embedded in the slot to limit the socket member to the locked position; when the socket member and the first elastic member are pressurized, the stop portion disengages from the slot with the socket member and enters the guide slot to allow the socket member to rotate at the unlocked position.

[0014] Preferably, according to an embodiment of the present invention, an arc-shaped groove is provided at the top of the stop portion, and the guide groove is provided with an arc-shaped portion corresponding to the arc-shaped groove, and the arc-shaped portion is used to be embedded in the arc-shaped groove to limit the socket member.

[0015] Preferably, according to an embodiment of the present invention, a stop assembly is fixedly provided at the bottom of the socket member, the stop assembly is located in the first elastic member and can move together with the socket member, when the stop assembly is opened, the first socket and the second socket are connected to each other, when the stop assembly is closed, the first socket and the second socket are separated from each other.

[0016] Preferably, according to an embodiment of the present invention, the stopper assembly comprises a stopper and a movable member, the movable member is provided with a third plug hole corresponding to the first plug hole, the stopper is provided on the movable member and is movable between a stop position and a release position;

[0017] When the stopper is in the stopping position, the stopper blocks and blocks the third plugging hole; when the stopper is in the releasing position, the stopper opens the third plugging hole.

[0018] Preferably, according to an embodiment of the present invention, a second elastic member is provided on the movable member, one end of the second elastic member is connected to the movable member, and the other end of the second elastic member is connected to the stop member.

[0019] Preferably, according to an embodiment of the present invention, the stopper is provided with an inclined guide groove inclined towards the second jack, and the inclined guide groove corresponds to the third jack. When the plug is inserted, the plug pushes against the inclined guide groove to open the third jack by the stopper; when the plug is pulled out, the elastic member pushes the stopper to block the third jack.

[0020] Preferably, according to an embodiment of the present invention, the metal member is provided with a check portion. The second jack has a first position and a second position. When the plug sequentially passes through the first jack, the third jack and the second jack, the plug is in the first position;

[0021] When the plug drives the jack member and the stopper assembly to rotate to abut against the check portion at the unlocking position, the plug is in the second position.

[0022] For the dual-protection switching socket provided by the present invention, in use, the plug is inserted through the first jack and pushes the jack member and the first elastic member to move towards the unlocking position, so that the plug drives the jack member to rotate to be connected to the metal member at the unlocking position. When the plug is pulled out, the jack member can be rotated to the locking position by rotating the plug, and the jack member is restricted by pushing against the jack member by the first elastic member, so that the jack member cannot rotate, and the first jack and the metal member are misaligned with each other, so that the socket cannot conduct electricity when directly inserted, the protection measure is better, the risk of electric shock caused by children's contact is avoided, and the safety is higher.

[0023] The additional aspects and advantages of the present invention will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present invention. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0025] Figure 1 It is a schematic structural diagram of a dual-protection switching safety socket provided in an embodiment of the present invention;

[0026] Figure 2 It is a cross-sectional view of a dual-protection switching safety socket provided in an embodiment of the present invention;

[0027] Figure 3 is Figure 2 The enlarged view of part A shown;

[0028] Figure 4 is Figure 2 the enlarged view of part B shown;

[0029] Figure 5 is another structural schematic diagram of the dual - protection switching safety socket provided in the embodiment of the present invention;

[0030] Figure 6 is Figure 5 the enlarged view of part C shown;

[0031] Figure 7 is the structural exploded view of the dual - protection switching safety socket provided in the embodiment of the present invention;

[0032] Figure 8 is the structural exploded view of the jack member, the first elastic member and the stop assembly provided in the embodiment of the present invention;

[0033] Figure 9 is the structural schematic diagram of the receiving member provided in the embodiment of the present invention.

[0034] Explanation of the reference numerals in the drawings:

[0035] 10, socket; 101, bottom case; 102, face case; 1021, through - hole; 1022, card slot; 1023, guiding slot; 1024, arc part; 103, receiving member; 1031, second jack; 1032, annular groove; 104, accommodation cavity; 20, jack member; 201, first jack; 202, stop part; 203, arc groove; 30, first elastic member; 40, metal part; 401, check part; 50, plug; 60, stop assembly; 601, movable part; 6011, third jack; 602, stop member; 6021, inclined guiding slot; 603, second elastic member.

[0036] The realization of the object, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed Embodiment

[0037] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0039] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0040] In the present invention, unless otherwise clearly defined and limited, the terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0042] The dual - protection switching socket according to the embodiments of the present invention will be described in detail below with reference to the drawings.

[0043] Refer to Figures 1 to 5As shown in the figure, the double-protection switching socket provided by the present invention includes a socket 10, a jack member 20, and a first elastic member 30. The socket 10 is provided with a metal member 40. The jack member 20 is arranged on the socket 10 and can be switched between an unlocking position and a locking position. The jack member 20 has a first jack 201. When the jack member 20 is in the unlocking position, the jack member 20 can rotate to force the first jack 201 to correspond to the metal member 40. When the jack member 20 is in the locking position, the jack member 20 is locked so that the first jack 201 is misaligned with the metal member 40. The first elastic member 30 is arranged on the socket 10 and abuts against the jack member 20. Under the elastic force of the first elastic member 30, the jack member 20 is restricted by the first elastic member 30 in the locking position.

[0044] Among them, the unlocking position means that the jack member 20 is in the depressed position, and the locking position means that the jack member 20 is in the elastic support position. When the jack member 20 is depressed, the first elastic member 30 is compressed. At the same time, the jack member 20 can rotate in the unlocking position, so that the plug 50 can rotate to be correspondingly connected to the metal member 40. When the plug 50 is pulled out, the jack member 20 is driven by the plug 50 to rotate back to the locking position. At the same time, the elastic member will push the jack member 20 to be locked in the locking position, making the jack member 20 unable to rotate, thereby ensuring that the first jack 201 and the metal member 40 are misaligned with each other when not in use, and the safety is higher.

[0045] For the double-protection switching socket provided by the present invention, when in use, the plug 50 is inserted through the first jack 201 and pushes the jack member 20 and the first elastic member 30 to move towards the unlocking position, so that the plug 50 drives the jack member 20 to rotate in the unlocking position to be connected to the metal member 40. When the plug 50 is pulled out, the jack member 20 can be rotated to the locking position by rotating the plug 50, and the jack member 20 is restricted by pushing against the jack member 20 through the first elastic member 30, so that the jack member 20 cannot rotate, and the first jack 201 and the metal member 40 are misaligned with each other, making the socket 10 unable to conduct electricity when directly inserted, with better protection measures, avoiding the risk of electric shock caused by children's contact, and higher safety.

[0046] Refer to Figure 7 and Figure 9 As shown in the figure, specifically, the socket 10 includes a bottom shell 101, a face shell 102, and a receiving member 103. The face shell 102 is fixed to the bottom shell 101 and defines a receiving cavity 104. The receiving member 103 is arranged in the receiving cavity 104. The metal member 40 is embedded in the receiving member 103. The receiving member 103 is provided with a second jack 1031 corresponding to the metal member 40, so that the plug 50 sequentially passes through the first jack 201 and the second jack 1031 to be plugged into the metal member 40.

[0047] In this embodiment, the second jack 1031 has a first position and a second position. When the plug 50 is directly inserted into the second jack 1031, the plug 50 is in the first position of the second jack 1031. When the plug 50 rotates to contact the metal piece, the plug 50 is in the second position. The metal piece 40 is embedded in the receiving member 103 and connected to the power cord, and the metal piece 40 can be integrally provided with the receiving member 103 to make its stability better.

[0048] Further, an annular groove 1032 is provided on the receiving member 103 and is located in the circumferential direction of the second jack 1031. The first elastic member 30 is embedded in the annular groove 1032. The front shell 102 has a through hole 1021 corresponding to the annular groove 1032. The jack member 20 is embedded in the through hole 1021 and sleeved on the top of the first elastic member 30. Wherein, when the first elastic member 30 is in a compressed state and a stretched state, it is compressed and stretched in the annular groove 1032. That is to say, when the jack member 20 is pressed down, the jack member 20 moves towards the receiving member 103 and presses down the first elastic member 30, so that the jack member 20 is in the unlocking position and can rotate. When inserting the plug 50, the plug 50 can be directly pressed down and then rotated to be connected for use. The operation is simple and convenient and the safety is high.

[0049] Refer to Figures 2 to 6 As shown, the peripheral wall of the through hole 1021 abuts against the receiving member 103 and is jointly provided with a card slot 1022 and a guide slot 1023. The card slot 1022 is adjacently arranged above the guide slot 1023. The circumferential direction of the jack member 20 has a stop portion 202. The stop portion 202 extends radially into the card slot 1022; under the elastic force of the first elastic member 30, the jack member 20 is elastically pushed by the elastic member to force the stop portion 202 to be embedded in the card slot 1022 to limit the jack member 20 in the locked position; when the jack member 20 and the first elastic member 30 are pressed and stressed, the stop portion 202 moves with the jack member 20 out of the card slot 1022 and into the guide slot 1023, so that the jack member 20 rotates in the unlocking position.

[0050] In this embodiment, Figure 3 As shown, when not in use, the jack member 20 is elastically propped up by the first elastic member 30. At the same time, the stop portion 202 is located in the card slot 1022 and abuts against the peripheral wall of the through hole 1021. Wherein, the depth of the card slot 1022 is greater than the depth of the guide slot 1023, and the stop portion 202 and the card slot 1022 are adapted. When not in use, the elastic force of the first elastic member 30 can limit the jack member 20 by the stop portion 202 in the card slot 1022, so that the jack member 20 cannot rotate in the horizontal direction; Figure 4As shown, when in use, by pressing down the jack member 20, the stop portion 202 can be disengaged from the card slot 1022, that is, in the unlocked position, and then the jack member 20 can be rotated in the horizontal direction. When the jack member 20 rotates, the stop portion 202 can rotate into the guide groove 1023, and the elastic force of the first elastic member 30 can push the jack member 20 to make the stop portion 202 abut against the guide groove 1023, ensuring that the jack member 20 will not bounce up, and then keeping the plug 50 and the metal member 40 plugged together.

[0051] Further, an arc groove 203 is provided at the top of the stop portion 202, and an arc portion 1024 corresponding to the arc groove 203 is provided in the guide groove 1023. The arc portion 1024 is used to be embedded in the arc groove 203 to limit the jack member 1024.

[0052] It can be understood that when the jack member 20 is rotated to force the first jack 201 to correspond to the metal member 40, the stop portion 202 is located below the arc portion 1024. Under the elastic force of the first elastic member 30, the stop portion 202 makes the arc portion 1024 embedded in the arc groove 203, and then the jack member 20 is restricted in the horizontal direction, so that the jack member 20 cannot rotate. When pulling out the plug 50, the jack member 20 can be slightly pressed downward to make the arc portion 1024 disengage from the arc groove 203, and then the jack member 20 is rotated to make the stop portion 202 rotate and be embedded in the position of the card slot 1022 to restrict and lock the jack member 20, improving its safety.

[0053] Specifically, a stop assembly 60 is fixedly provided at the bottom of the jack member 20. The stop assembly 60 is located inside the first elastic member 30 and can move together with the jack member 20. When the stop assembly 60 is opened, the first jack 201 communicates with the second jack 1031. When the stop assembly 60 is closed, the first jack 201 is separated from the second jack 1031. Among them, when the jack member 20 is pressed down, the stop assembly 60 can be pressed down together with the jack member 20, and at the same time the stop assembly 60 is opened. When the jack member 20 is pushed upward by the first elastic member 30, the stop assembly 60 can move upward together with the jack member 20, and at the same time the stop assembly 60 is closed.

[0054] Refer to Figure 8 As shown, the stop assembly 60 includes a stop member 602 and a movable member 601. A third jack 6011 corresponding to the first jack 201 is provided on the movable member 601. The stop member 602 is provided on the movable member 601 and is movable between a stop position and a release position; when the stop member 602 is in the stop position, the stop member 602 stops and separates the third jack 6011; when the stop member 602 is in the release position, the stop member 602 opens the third jack 6011.

[0055] That is to say, in this embodiment, when the plug 50 is inserted into the first jack 201, the stopper 602 can be pushed to the release position, so that the first jack 201, the third jack 6011 and the second jack 1031 are communicated with each other; when the plug 50 is pulled out, the stopper 602 is in the blocking position, and the third jack 6011 is closed, and at the same time, the first jack 201 and the second jack 1031 are separated.

[0056] It can be understood that a second elastic member 603 is provided on the movable member 601. One end of the second elastic member 603 is connected to the movable member 601, and the other end is connected to the stopper 602. Among them, after the plug 50 is pulled out, the second elastic member 603 pushes the stopper 602 from the release position to the blocking position, so that the stopper 602 can automatically close the third jack 6011, and at the same time, it is combined with the jack member 20 to make its safety higher.

[0057] Preferably, the stopper 602 is provided with an inclined guide groove 6021 inclined toward the second jack 1031. The inclined guide groove 6021 corresponds to the third jack 6011. When the plug 50 is inserted, the plug 50 pushes against the inclined guide groove 6021 to open the third jack 6011 by the stopper 602; when the plug 50 is pulled out, the second elastic member 603 pushes the stopper 602 to block the third jack 6011.

[0058] In this embodiment, when the plug 50 is inserted into the first jack 201, the plug 50 abuts against the inclined guide groove 6021 and pushes the stopper 602 to move to the release position, so that the third jack 6011 can be opened. When the plug 50 is pulled out, the second elastic member can push the stopper 602 to close the third jack 6011 to ensure that the first jack 201, the third jack 6011 and the second jack 1031 are closed, and improve its safety.

[0059] Refer to Figure 9 As shown, a check portion 401 is provided on the metal member 40. The second jack 1031 has a first position and a second position. When the plug 50 sequentially passes through the first jack 201, the third jack 6011 and the second jack 1031, the plug 50 is in the first position; when the plug 50 drives the jack member 20 to rotate to the unlocking position and abuts against the check portion 401, the plug 50 is in the second position.

[0060] In this embodiment, when the plug 50 sequentially passes through the first jack 201, the third jack 6011, and the second jack 1031, the plug 50 presses down the jack member 20, and then rotates the plug 50 to drive the jack member 20 to unlock. At the same time, the plug 50 can rotate from the first position to the second position and engage with the anti-check portion 401 on the metal member 40, so that the plug 50 is restricted and fixed; when pulling out the plug 50, rotate the plug 50 from the second position to the first position, so that the plug 50 disengages from the metal sheet. When pulling out the plug 50, the jack member 20 bounces upward, and the stopper 602 elastically retracts to the stopper position to close the first jack 201, the third jack 6011, and the second jack 1031. Therefore, it can be understood that when a user directly inserts other foreign objects (such as a wire) through the first jack 201, without driving the jack member 20 to rotate and unlock, the inserted foreign object cannot rotate to the second position to contact the metal sheet, which is safer and more convenient to use and operate.

[0061] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0062] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural transformations made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied to other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A dual - protection switch socket, characterized in that, Comprising: A socket, provided with a metal part; A jack part, provided on the socket and switchable between an unlocked position and a locked position. The jack part has a first jack. When the jack part is in the unlocked position, the jack part can rotate to force the first jack to correspond to the metal part. When the jack part is in the locked position, the jack part is locked so that the first jack is misaligned with the metal part; A first elastic member, provided on the socket and abutted against the jack part. Under the elastic force of the first elastic member, the jack part is restricted by the first elastic member in the locked position; The socket includes: A bottom case; A face case, fixed to the bottom case and defining a receiving cavity; A receiving member, provided in the receiving cavity. The metal part is embedded in the receiving member. The receiving member is provided with a second jack corresponding to the metal part, so that a plug sequentially passes through the first jack and the second jack to be plugged into the metal part; The receiving member is provided with an annular groove in the circumferential direction of the second jack. The first elastic member is embedded in the annular groove. The face case has a through hole corresponding to the annular groove. The jack part is embedded in the through hole and sleeved on the top of the first elastic member; The peripheral wall of the through hole is provided with a card slot and a guiding slot. The card slot is adjacently arranged above the guiding slot. The circumferential direction of the jack part has a stop portion, and the stop portion extends radially into the card slot; Under the elastic force of the first elastic member, the jack part is elastically pushed by the first elastic member to force the stop portion to be embedded in the card slot to restrict the jack part in the locked position; when the jack part and the first elastic member are stressed, the stop portion moves with the jack part to disengage from the card slot and enter the guiding slot, so that the jack part rotates in the unlocked position; A stop assembly is fixedly provided at the bottom of the jack part. The stop assembly is located in the first elastic member and can move together with the jack part. When the stop assembly is opened, the first jack and the second jack are communicated with each other. When the stop assembly is closed, the first jack and the second jack are separated from each other.

2. The dual - protection switch socket according to claim 1, characterized in that, An arc-shaped groove is provided at the top of the stop portion. The guiding slot is provided with an arc-shaped portion corresponding to the arc-shaped groove, and the arc-shaped portion is used for being embedded in the arc-shaped groove to restrict the jack part.

3. The dual - protection switch socket according to claim 1, characterized in that, The stop assembly includes a stop member and a movable member. The movable member is provided with a third jack corresponding to the first jack. The stop member is provided on the movable member and can move between a stop position and a release position; When the stop member is in the stop position, the stop member blocks and separates the third jack; when the stop member is in the release position, the stop member opens the third jack.

4. The dual - protection switch socket according to claim 3, characterized in that, A second elastic member is provided on the movable member. One end of the second elastic member is connected to the movable member, and the other end is connected to the stop member.

5. The dual - protection switch socket according to claim 4, characterized in that, The stopper is provided with an inclined guide groove that inclines towards the second jack, and the inclined guide groove corresponds to the third jack. When the plug is inserted, the plug pushes against the inclined guide groove to cause the stopper to open the third jack; when the plug is pulled out, the second elastic member pushes the stopper to block the third jack.

6. The dual - protection switch socket according to any one of claims 3 to 5, characterized in that, The metal member is provided with a check portion. The second jack has a first position and a second position. When the plug sequentially passes through the first jack, the third jack, and the second jack, the plug is in the first position. When the plug drives the jack member and the stopper assembly to rotate to abut against the check portion at the unlocking position, the plug is in the second position.

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