Through connector with locking element

Abstract

The present disclosure relates to a through connector (7) adapted to mate with a mating connector (8), comprising an inner head (1) and an outer head (3) assembled with each other through an aperture (40) of a shield and / or a wall to carry terminals and mate with a mating connector. The connector comprises hook members (34, 14) on the outer head (3) and the inner head (1) arranged to engage together to hold the heads together in the assembled position. It comprises a locking element mounted on the inner head (1), the locking element being movable, preferably only by manual operation, between an unlocked position (Figure 10) allowing the two heads to be assembled together, and a locked position (Figure 12) preventing the hook members from disengaging from each other. The locking element (2) comprises one or more auxiliary members (21, 211) cooperating with the hook members (14, 111) for disengaging the hook members from each other when the locking element is moved (D2) from its locking position to its unlocking position.

Description

Technical Field

[0001] The present invention relates to the field of connectors, in particular to the field of automobile connectors. Background Art

[0002] Connectors are used to assemble several previously manufactured components in order to establish a connection between them, allowing the transmission of electrical energy and / or signals between these components. These components can be cables, motors or another type of equipment, such as computers or sensors or lighting equipment. Such connectors can have a greater or lesser number and larger or smaller size electrical contacts, as required.

[0003] When a connector mounted on one cable is mated with another connector (usually of a different type, such as a complementary type, which may be referred to as a mating connector), its electrical contacts themselves mate with corresponding mating contacts mounted on the other side of the connection in the mating connector.

[0004] "Through" connectors are used to connect cables to non-flexible (non-flexible) devices, such as connecting to a motor to power it, or connecting to an entire electric vehicle to charge its battery.

[0005] Such a through-connector generally comprises an inner and outer part located on either side of a wall, which are assembled together through an opening in the wall. Inner and outer parts are generally used herein to refer to the inside and outside of a capsule, but the present disclosure also applies to the opposite configuration.

[0006] Figures 1a to 2 show an example of a prior art through-connector 9, comprising an inner header 91 assembled with outer header components 92, 93 via a customer interface called a shield 94. The shield 94 will be fixed to a wall not shown by known fixing means or be integral with the wall.

[0007] The inner head accommodates several electrical terminals 911 fixed to the ends of cables 912. Such cables are connected, for example, to the terminals of a power battery not shown.

[0008] It is to be noted that the entire assembly shown in FIG. 1 a is just one connector, a connector fixed to a wall, which is then ready to mate with a mating connector (which is not shown in FIG. 1 a ).

[0009] The outer part comprises an outer head 93 having a fixing and shielding sleeve 92 and is arranged to be assembled with the inner head 91. The outer head 93 forms a socket assembled with a shield 94 and carrying mating means for ergonomically receiving the mating connector 8. Such mating means generally comprise a poka-yoke guide 931 and a retaining projection 932 for the mating connector.

[0010] In this prior art, the inner head 91 is retained in a retention spear 914 integral with the fixed sleeve 92, which clamps itself in a small cavity on the outer surface of the inner head 91. As shown in Figure 1b, the fixed sleeve 92 also includes a retention spear 923 adjacent to the outer head 93, thereby preventing the inner head 91 from moving backwards and disengaging from the outer head 93.

[0011] 2, disassembly of the connector 9 can only be accomplished by bending the retention lance 914 away from the inner head 91, which requires the use of an elongated tool 90, such as a screwdriver, to be inserted between the inner head 91 and the shield 94. This is true for each retention lance, and typically four of the retention lances must be actuated simultaneously.

[0012] Thus, in the prior art, once assembled together, the through-type outer and inner heads are difficult to remove from each other. The maintainability of the final assembly becomes difficult, and therefore the entire system or vehicle is difficult to use. In addition, such fixation by the snap-fit ​​of the spear 914 is not very reliable to ensure that retention is actually obtained, which is difficult to achieve if retention is not completely generated by the insertion of the inner head alone. Summary of the invention

[0013] An object of the present invention is to overcome some or all of the disadvantages of the prior art. In particular, it aims to make the assembly and disassembly of a through-connector easier, faster and more reliable, especially for non-professional operators.

[0014] According to the present disclosure, these objects are partially or fully achieved by devices and methods having the features described in the respective claims. The following disclosure provides a solution that at least partially alleviates these disadvantages. The claims constitute an integral part of the technical specification related to the present disclosure provided herein.

[0015] In this context, a connector according to claim 1, a connector according to claim 11 and a mating connector assembly are disclosed. The disclosure also relates to a method for assembling and disassembling a wall-spanning connector according to claims 12 and 13.

[0016] This through-type connector suitable for mating with a mating connector comprises a first head, called inner head, and a second head, called outer head, suitable for being assembled with each other across a shield and / or a possibly closed opening of the wall from both sides so as to carry the terminals and mate with the mating connector.

[0017] According to the present disclosure, the through-connector comprises an outer hook member on the outer head and an inner hook member on the inner head, which are arranged to engage together once in their assembled position to retain the inner and outer heads together. It comprises a locking element mounted on the inner head, which can be moved, preferably only by manual operation, at least between an unlocked position and a locked position, the unlocked position allowing the two heads to be assembled together and the locked position preventing the hook members from being disengaged from each other. The locking element also comprises one or more auxiliary members, which cooperate with at least one of the hook members to disengage the hook members from each other when the locking element moves from its locked position to its unlocked position.

[0018] Thanks to these arrangements, disassembly and repair can be performed more easily and ergonomically, even if the rear side is barely accessible or difficult to access. Installation is also easier and more reliable, with little or no loss of compactness. Implementation in various systems or vehicles is easier and more flexible, with fewer design constraints.

[0019] The advantages are easy installation and better maintainability from the rear side and in hard-to-reach areas. The use of the CPA guarantees the locking function and acts as a secondary locking element. It is ergonomic and disassembly is done by deactivating the CPA. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other advantages and features will become apparent by examining the in no way limiting detailed description and the accompanying drawings of three examples, in which:

[0021] - FIG. 1 a is an exploded schematic diagram showing components of a through-connector according to an example of the prior art;

[0022] - FIG. 1 b is a schematic diagram showing details of the prior art connector of FIG. 1 a after assembly, with the outer header removed for greater clarity;

[0023] - Fig. 2 is a schematic longitudinal sectional view showing the through-connector of Fig. 1a in its entirety and in detail when assembled on a shield and mated with a schematically indicated mating connector;

[0024] - Figure 3 is a scaled schematic diagram showing an exploded view of components of a through-type connector according to an exemplary embodiment of the present disclosure and a perspective view of the assembled connector, wherein an exemplary mating connector is shown in the perspective view;

[0025] - Figure 4 yes Figure 3 A perspective view of a locking element of an embodiment of the present invention;

[0026] - Figure 5 yes Figure 3A detailed perspective top view of a horizontal cutaway of the locking portion of the inner head of the illustrated embodiment;

[0027] - Figure 6 is with Figure 5 The same view with the locking element assembled with the inner head and in the unlocked position;

[0028] - Figure 7 yes Figure 6 is a detailed top view of the assembly with the top wall still removed;

[0029] - Figure 8 yes Figure 3 A perspective view of the outer head of an embodiment of the present invention;

[0030] - Fig. 9 yes Figure 3 A front elevation view of a longitudinal center section of the connector before being assembled together;

[0031] - Fig.10 yes Figure 3 A longitudinal center section elevation view of the connector before being assembled on the fixed wall and locked;

[0032] - Fig.11 is in motion in the locking element Figure 3 A detailed front view of a longitudinal center section of the connector;

[0033] - Fig.12 yes Figure 3 A detailed front elevation view of a longitudinal section of the connector in a locked position, showing a center section;

[0034] - Fig.13 yes Figure 3 A detailed front elevational view of a longitudinal section of the connector in a locked position showing an offset section;

[0035] - Fig.14a and Fig.14b is during the extraction of the locking element from its locking position and during the step of unlocking the locking element from the inner head Figure 3 Detailed front views of longitudinal sections of the connector, respectively, sectioned at the center and sectioned at an offset;

[0036] - Fig.15a and Fig.15b is during the extraction of the locking element from its locking position and in the further step of the locking element assisting the inner head in unlocking from the outer head Figure 3 Detailed front views of longitudinal sections of the connector, respectively, sectioned at the center and sectioned at an offset;

[0037] - Fig.16 It is unlocked and in the process of separating the inner head from the outer head. Figure 3 A front view of a longitudinal center section of the connector;

[0038] - Fig.17 yes Figure 3 A detailed front view of a longitudinal center section of a connector of , in a state where the locking element is prevented from locking by the inner head not being fully inserted into the outer head. DETAILED DESCRIPTION

[0039] Figure 3 Figures 1 to 15 show examples of embodiments of a through-connector 7 according to the present disclosure. In the various figures, similar or identical elements have the same reference numerals.

[0040] like Figure 3 As shown, the through-connector 7 comprises an outer head 3 which receives and is assembled with an inner head 1 which crosses a shield 4 which can be fixed to a wall or integral with the wall. At its mating end, the inner head 1 has a double longitudinal cavity 10 in which two electrical terminals are mounted, which can be of a known type and are not visible here. These terminals are fixed to two cables 192 to be connected. The mating end of the inner head 1 will be inserted through the shield 4 and then inserted into the longitudinal cavity 30 of the outer head 3. Once assembled, the outer head 3 is fixed to the shield, for example by screws 38, and the connector 7 forms a wall socket that can accommodate a mating connector 8 with its own cable 812, which is guided in the cavity 30 of the outer head and whose mating terminals 811 match the terminals of the inner head 1.

[0041] In such a mating assembly, the counter connector 8 preferably comprises a locking mechanism and a “connection position assurance” system (CPA), which are located between said counter connector 8 and the connector 7, not shown here, independently and as a supplement to the present disclosure.

[0042] It should be noted that this mating connector 8 can be the same as that in the prior art, with the same locking mechanism and CPA, because the shapes of the inner head 1 and the outer head 3 of the present connector 7 are not directly limited by the functional features of the present disclosure, and can be easily adapted to be compatible with the shape of this mating connector.

[0043] According to the invention, the inner head 1 itself comprises a locking region 12 in which a locking element 2 is mounted, which can be in an unlocked position (see Figure 6 , Fig. 9 and Fig.10 ) and locked position (see Fig.12 and Fig.13 )

[0044] like Figure 4As shown, the locking element 2 is a one-piece separate element, which is inserted into the longitudinal cavity of the top part of the inner head 1. The locking element 2 comprises a transverse rear plate 23 and two lateral locking arms 21, 22, from which a securing member extends longitudinally, which is realized here as a flexible (flexible) central securing arm 24. Both lateral locking arms 21, 22 have two guide protrusions 218, 219, which are guided by the longitudinal grooves of the locking area 12 of the inner head 1. One of the protrusions 219 of the locking arms 21, 22 also has a hook shape, which is able to retain the locking element 2 into the groove 123 of the locking area 12 by means of the abutment 122.

[0045] exist Figure 4 , noting the directional references used in this disclosure, direction X is shown for all "forward" directions and direction Z for all "upward" directions.

[0046] The securing arm 24 is elastically deformable in the vertical direction and has at its free end a bottom-oriented nose 241 with an outer flat transverse forward-oriented surface 2411 and a bottom rear-oriented inclined surface 2412. The securing arm 24 also has a transverse projection 240 on both sides within its length, the transverse projection having a top-oriented surface 2401, two lateral bottom rear-oriented inclined surfaces 2402 and two forward-oriented surfaces 2403.

[0047] The lateral locking arms 21, 22 can be elastically deformed in the horizontal direction toward the inside, that is, toward the central securing arm 24. Each locking arm has an auxiliary cam 211, 221 protruding laterally toward the inside on its free end, the auxiliary cam having a top rearward oriented inclined surface 2111, preferably a top forward oriented inclined surface 2121. Each locking arm 21, 22 also has a closure protrusion 212 directed laterally toward the inside at its inner part, which has a forward bottom oriented inclined surface.

[0048] Figure 5 and Figure 6 The interior of the locking area 12 of the inner head 1 is shown, cut horizontally so as to almost remove its top wall 121. The locking area 12 comprises a flexible shackle 14 having a hook bridge 140 between two parallel branches extending horizontally from the top surface of the inner head 1, passing through an elastically deformable joint 149 which enables the hook bridge 140 to be raised at the free end of the shackle 14.

[0049] Between its two branches, the free end of the shackle 14 has a top front-oriented bevel 141 and a rear-oriented vertical abutment surface 142. Each branch of the shackle 14 has a lateral auxiliary projection 111 on its lateral outer face. Fig.13As shown, the auxiliary protrusion 111 has a forward bottom directional slope 1111 , a rear bottom directional slope 1112 , and a top rear directional slope 1113 .

[0050] Figure 6 The locking element 2 is shown (with the top wall 121 still removed) just inserted into the recess of the inner head 1 and in the unlocked position.

[0051] The nose 240 of its securing arm 24 is inserted between the two branches of the inner head hook 14 and can slide between them. The two ends of its transverse projection 240 overlap with the branches of the inner head hook 14. Each auxiliary cam 211, 221 of the lateral face of the locking arms 21, 22 of the locking element 2 is located below its corresponding lateral auxiliary projection 111 of the inner head hook 14 and can slide longitudinally thereunder.

[0052] like Figure 8 and Fig. 9 As shown, the outer head 3 has a longitudinally oriented arm in its longitudinal through cavity 30, which has a fixing hook 34 extending toward the inner head 1. It has vertical and transverse retaining surfaces 342, arranged to retain the rear-oriented vertical abutment surface 142 of the bridge 140 of the hook ring 14 when the inner head 1 is fully inserted into the outer head 3, as shown in FIG. Fig. 9 The fixing hook 34 of the outer head also ends at the top rear directional inclined surface 341.

[0053] Figures 9 to 13 The process of assembling the connector 7 is schematically shown.

[0054] like Figure 4 and Figure 8 As shown, all the views of the "center section" show a longitudinal vertical section along the middle plane AA, passing through the fixing hook 34 and the hook bridge 140. All the views of the "offset section" show a longitudinal vertical section along a parallel plane BB, which is offset from the center plane AA and passes through the auxiliary protrusion 111 of the inner head and the auxiliary cam 211 and the closing cam 212 of the locking element 2.

[0055] exist Fig. 9 In the embodiment shown, the inner head 1 is already provided with the locking element 2 in its unlocked position and is located at the entrance to the opening 40 of the shield 4 and at the entrance to the cavity 30 of the outer head 3 .

[0056] exist Fig.10 In the embodiment, the inner head 1 has been inserted into the outer head 3 of A1 and assembled with the outer head 3. Its hook bridge 140 has been lifted by the inclined surface 341 of the fixing hook 34 and then elastically falls against the retaining surface 342 on the fixing hook 34. The locking element 2 is still in the unlocked position and extends from the top wall 121 by a distance P1.

[0057] exist Fig.11 In the embodiment of the present invention, the locking element 2 is pushed to the lower side of the outer head 3 and the top wall 121 at A2, and the protrusion distance of the rear plate 23 is reduced to P2. By this movement A2, the nose 241 of the securing arm 24 of the locking element 2 is lifted by the ascending slope 341 of the fixing hook 34 of the outer head 3. Its previous position is indicated here by a dotted line.

[0058] exist Fig.12 1, the locking element 2 is fully pushed in, its rear plate 23 abuts against the edge of the top wall 121 of the locking area 12 of the inner head 1. Its nose 241 has fallen back under the elastic action of the securing arm 24 and / or can be pushed back by an optional downward slope (not shown here) extending from below the top wall 121. The protruding distance P3 of the rear plate 23 has been reduced to its minimum value, preferably zero. Such a distance P3 is a clearly visible indicator that the locking element 2 has been fully inserted and is now in its locked position.

[0059] As offset cut Fig.13 As shown, the lower surface of the closing protrusion 212 of the locking arm 21 contacts the top of the top rear directional inclined surface 1113 of the auxiliary protrusion 111 of the shackle of the inner head. Although this function can be regarded as optional, this contact ensures that the shackle 14 is actually downward and thus completely retained by the fixed hook of the outer head 3. It also forcibly holds the shackle in the downward position behind the fixed hook 34, thereby effectively locking the inner head 1 assembled with the outer head 3.

[0060] Figures 14a to 15b The process of disassembling the connector 7 is schematically shown, for example, for repair on a finished system or vehicle. Fig.12 and Fig.13 The disassembly is described starting with the situation in which the outer head and the inner head are assembled around and through the shield 4 and / or the wall and locked together by the locking element 2 being fully pushed in.

[0061] exist Fig.14a and Fig.14b In the unlocking step, the maintenance operator starts to pull the locking element 2 by the rear plate 23 of the locking element 2. In the unlocking step, the first part D1 of the rearward movement of the locking element drives the nose 241 of its securing arm 24 upwards by the contact cooperation of the nose 241 and its rear bottom directional bevel 2412 with the top front directional bevel 2412 of the shackle 14, as shown in FIG. Fig.14a shown.

[0062] exist Fig.15a and Fig.15b In the process, the second moving part D2 continues to pull. Fig.15aAs shown, the closing protrusion 212 of each locking arm 21, 22 of the locking element 2 has been fully retreated to expose the two auxiliary protrusions 111 of the arm of the shackle 14, so that the shackle can be lifted. Then, simultaneously or offset, the retreat of the auxiliary cam 211 of each locking arm 21, 22 of the locking element 2 contacts and cooperates with the bottom and forward bottom directed surface 1111 of the auxiliary protrusion 111 of the locking arm 21 of the shackle 14 through its peak and its top rear directed inclined surface 2111, thereby lifting the auxiliary protrusion 111. Fig.15a As shown, the lifting movement U21 of the auxiliary protrusion lifts the free end of the hook 14, thereby lifting its bridge portion 140 U20, disengaging it from and passing over the retaining surface 342 of the fixing hook 34 of the outer head 3.

[0063] like Fig.16 As shown, the inner head 1 can then be extracted from the outer head 3 by simply pulling D3, as shown by the gap E3 that appears between the two parts 1, 2 of the connector 7. This can be achieved by pulling directly on the inner head 1, or simply by continuing to pull on the rear plate 23 of the locking element 2, because its lateral locking projections 219 will transmit the traction force to the inner head through its abutment 122 in the groove of the locking area 12 of the inner head.

[0064] Thus, unlocking the inner head 1 and separating it from the outer head 3 can be done manually simply and in one continuous movement, without requiring any tools to carry out the entire disassembly operation.

[0065] Fig.17 The situation is shown in which the inner head 1 is already assembled with the outer head 3, but the hook bridge 140 of the inner head 1 is not in full and correct contact with the retaining surface 342 of the outer head 3. As indicated by the oval mixed dashed line, the existing raised position of the hook bridge 140 forms an abutment with the front surface 2411 of the guarantee arm 24 of the locking element 2 by its rear surface 142, which in fact prevents its full insertion under the top wall of the inner head. Similarly or alternatively, the rear oriented surface 143 of the branch 14 of the hook forms an abutment for the front surface 2403 of the transverse protrusion 240 of the guarantee arm 24 of the locking element 2.

[0066] Therefore, the remaining protruding distance P2' clearly indicates to the operator that the connector 7 is not fully assembled and cannot be locked. In contrast, the fully inserted locking element (distance P3) can clearly determine that the connector is fully assembled and locked.

[0067] Therefore, the present disclosure provides better installation convenience and reliability as well as better maintainability from the rear side even if the area is difficult to access.

[0068] Although the various cams 211 and protrusions 212 of the locking element 2 are illustrated here in two cases distributed on two arms, it should be noted that other embodiments can also be considered with more cams 211 and protrusions 212 as well as only one cam 211 and one protrusion 212, as long as the same contact fit is set for each functional surface and component described here. In the same spirit, similar changes in the number of examples can also be considered for the securing arm 24 and its nose 241 and inclined surfaces 2411, 2412. Similarly, the hook 14 is also considered to have only one arm or more than two arms, as well as more than one "bridge" 140 and retaining surface 342.

[0069] Furthermore, it should be noted that the terms "inner" and "outer" are not meant to be limiting herein and can be interchanged depending on the implementation context of the connector.

[0070] Of course, the present disclosure is not limited to the examples previously described, and many adjustments may be made to these examples without departing from the scope of the present disclosure.

Claims

1. A through-type connector (7) arranged to be fixed on two faces of a wall and adapted to mate with a mating connector (8), the connector comprising: - one or several electrical terminals, suitable for being removably connected to one or several mating terminals (811) of the mating connector (8); - a first head, called inner head (1), and a second head, called outer head (3), suitable for being assembled with each other from both sides of the wall and across the shield (4) and / or the closed opening of the wall, so as to carry the terminals and cooperate with the counterpart connector (8); The through-type connector (7) is characterized in that: - the through-connector comprises an outer hook member (34) fixed to the outer head (3) or extending from the outer head, and an inner hook member (14) fixed to the inner head (1) or extending from the inner head; - the hook members (34, 14) are arranged to engage with each other so as to hold the heads (1, 3) together once in their assembled position; The through-connector comprises a locking element (2) mounted on the inner head (1) so as to be movable, preferably only by manual operation, between at least the following positions: o an unlocked position, which allows the two heads (1, 3) to be assembled together and the two hook members (34, 14) to be hooked together; as well as o a locked position preventing the hook members (34, 14) from disengaging from each other; - the locking element (2) comprises one or several auxiliary members (21, 22) which cooperate by contacting at least one (14) of the hook members (14, 34) when the locking member (2) moves from its locking position (A2, A3) to its unlocking position, so as to disengage the hook members from each other.

2. A connector according to the preceding claim, characterised in that The hook members (14, 34) are arranged to self-engage with each other by a single movement of assembling the inner head (1) and the outer head (3) together; The locking element (2) is slidably mounted in a cavity formed in the inner head (1) or between the two heads (1, 3), and the locking element is arranged to move as follows: - moving by a pulling movement from its locked position to its unlocked position towards a second abutment position; and - Moved from its unlocked position to its locked position by a pushing movement (A2, A3) engaging it in the cavity until a first abutment position preferably having clear and unambiguous visible markings showing that the locking element (2) is actually in its locked position.

3. A connector according to any one of the preceding claims, characterized in that The inner hook member (14) is movable in a direction (U20) called "upward" so as to disengage from the outer hook member (34). Furthermore, the auxiliary member (21, 22) carries at least one auxiliary cam (211), which is arranged to cooperate (2111) with the surface (1111) of the inner hook member (14) along the movement of the locking element (2) from its locking position toward its unlocking position, so as to lift the inner hook member (14) toward the upward direction (U20) and thereby disengage it from the outer hook member (34, 342).

4. A connector according to any one of the preceding claims, characterized in that The inner hook member (14) is movable in a direction called "upward" (U20, U21) to disengage from the outer hook member (34); Furthermore, the auxiliary member (21, 22) carries at least one closing surface (212), which is arranged to cooperate with the surface (1113) of the inner hook member (14) when the locking element (2) is in its locked position, so as to prevent the inner hook member (14, 140) from being lifted (U20) and thus prevent it from being separated from the outer hook member (34, 342); And preferably for cooperating with said surface (1113) of said inner hook member (14) to drive said locking element (2) downwardly to its engaged position when said locking element (2) moves from its unlocked position towards its locked position.

5. Connector according to the preceding claim, characterized in that The auxiliary member (21, 22) has at least one closing protrusion (212) that carries the closing surface, and when the locking element (2) moves from its unlocking position toward its locking position, the closing protrusion is inserted between the auxiliary protrusions (111) of the inner hook member (14), while the fixed part (121) of the inner head (1) prevents the auxiliary element (21, 22) from lifting itself.

6. A connector according to any one of the preceding claims, characterized in that The connector comprises a securing member (24) provided with a nose (241) which is inserted between the inner hook member (14) and the fixing portion (121) of the inner head (1) when the locking element (2) moves from its unlocking position to its locking position; The nose portion (241) has a front abutment surface (2411) which abuts against a rear abutment surface (142) of the inner hook member (14) when the inner hook member (14) has not yet fully engaged (342) with the outer hook member (34).

7. Connector according to the preceding claim, characterized in that When the locking element (2) moves towards its locking position, the inner hook member (14) must move in an "upward" direction (U20), in particular by being lifted by a fixed ramp, so that its inner hook portion (140) can travel on the outer hook portion (341) of the outer hook member (34); and wherein the inner hook portion (140) must move downwardly in order to abut engagement with the retaining surface (342) of the outer hook member (34); And the ensuring member (24) has an abutment surface (2411), and when the inner hook member (14) has not yet completely moved above the outer hook portion (341), including its final downward movement to engage with the retaining surface (342), the abutment surface (2411) abuts the rear abutment surface (142) of the inner hook member (14).

8. Connector according to the preceding claim, characterized in that The securing member comprises a securing arm (24) which moves in an "upward" direction via the same fixing slope (341) as the hook member (14) when the locking element (2) moves towards its locking position; And when the locking element (2) is withdrawn from its locking position to its unlocking position, it preferably moves in an "upward" direction through the front inclined surface (141) of the inner hook portion (140) of the inner hook member (14).

9. The connector according to any one of claims 6 to 8, characterized in that: The securing member (24) and the auxiliary members (21, 22) are formed as parallel separate arms extending from the same operating plate (23) of the locking element (2) towards the outer head (3), the operating plate being an independent component slidably insertable into a through and all-around closed (121) cavity of the inner head (1).

10. A connector according to any one of the preceding claims, characterised in that The outer head (3) is suitable for being fixed to a shield (4) and / or a wall, the inner head (1) carries all the electrical terminals, and the inner head (1) is assembled to the outer head (3) by being inserted and fixed into a through cavity (30) of the outer head (3), and preferably only fixed to the outer head (3).

11. A connection assembly comprising a through-connector (7) according to any one of the preceding claims fixed to a shield (4) and / or a wall, and a counter connector (8) mating with the through-connector (7).

12. A method for fixing a through-type connector on a wall, comprising the following steps: - providing a through-connector according to any one of claims 1 to 10, wherein the locking element (2) is in an unlocked position; - connecting the terminals of the through-connector with a cable (192); - Assemble the inner head (1) and the outer head (3) of the through-connector (7) together on both sides of the wall and across the opening of the wall; - The assembly (1, 3) is locked by moving the locking element (2) of the through-connector from its unlocked position (A2, A3) to its locked position.

13. A method for disassembling a through-connector (7) according to any one of claims 1 to 10 from a shield (4) and / or a wall to which it is fixed, comprising the following steps: - starting to move (D1) its locking element (2) from its unlocking position towards its locking position, thereby unlocking (212, 111) the inner hook member (14); - continuing to move (D2) the locking element (2) until its locking position, thereby extracting (U21, U20) the inner hook member (14) from its engagement position (142, 342) with the outer hook member (34); - Extracting (D3) the inner head (1) from the outer head (3) and then from the shield (4) and / or the wall.

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