JP2017059333A - Security structure for connector and protection cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress illegal access to a connector.SOLUTION: In a security structure for a connector covering the connector with a protection cover, in which a first connector and a second connector are fitted together, an engaged part is provided in an exterior wall the first connector, and a plurality of wires is lead out from a rear side in the second connector. The protection cover is formed by a pair of divided comer bodies divided along with a fitting direction of the first and second connectors, and the pair of divided cover bodies is assembled and fixed by fixing means which can be fixed and cancelled by an exclusive jig. The assembled protection cover comprises: a fitting covering part covering a boundary part of the first and second connectors in the fitted state; an engaging part engaging to the engaged part of first connector; a lead-out covered part covering a lead-out part from the second connector of the plurality of wires; and a wire lead-out port leading-out the plurality of wires to an exterior side.SELECTED DRAWING: Figure 4

Description

  The technology disclosed in the present specification relates to a connector security structure that suppresses unauthorized access, and a protective cover used in the connector security structure.

  In recent years, in the field of vehicles, a large number of control devices (ECU: Electronic Control Units) that control in-vehicle devices are connected by a communication bus, and information is transmitted and received mutually according to a communication protocol such as CAN (Controller Area Network). A configuration for processing is common. Although the number of these ECUs is increasing, the number of ECUs connected to one communication bus is limited. Therefore, the ECUs are divided into a plurality of groups, and each group is connected to one communication bus. A configuration is employed in which different communication buses are relayed by a relay device (GW: Gateway) (see FIG. 8).

JP 2004-152543 A

  However, since the CAN does not have a security function, the network can be easily accessed from the connector or the J / C without any advanced knowledge. Such unauthorized access can be easily performed by simply inserting a connection pin from the front or back of the connector.

  The technology disclosed in the present specification has been completed based on the above circumstances, and aims to suppress unauthorized access in a vehicle-mounted connector.

  The technology disclosed in the present specification is a connector security structure in which a connector in which a first connector and a second connector are fitted is covered with a protective cover, and a locked portion is provided on an outer wall of the first connector. And a plurality of electric wires are led out from the rear of the second connector, and the protective cover is a pair of divided parts along the fitting direction of the first connector and the second connector. The pair of divided cover bodies are assembled and fixed to each other by fixing means that can be fixed and released by a dedicated jig, and the protective cover in the assembled state is connected to the first connector in the fitted state. Covering a fitting covering portion that covers a boundary portion with the second connector, a locking portion that locks the locked portion of the first connector, and a lead-out portion of the plurality of electric wires from the second connector Derivation A covering portion, characterized in that it and a wire outlet for deriving a plurality of electric wires to the outside.

  The technology disclosed in this specification is a protective cover used for a security structure of a connector in which a first connector and a second connector are fitted, and the fitting between the first connector and the second connector. The pair of divided cover bodies are assembled and fixed to each other by a fixing means that can be fixed and released by a dedicated jig. In the assembled state of the cover body, the cover is covered with a fitting covering portion that covers a boundary portion between the first connector and the second connector in the fitted state, and a locked portion provided on the outer wall of the first connector. A locking portion that covers, a lead-out covering portion that covers a lead-out portion from the second connector of a plurality of electric wires led out from behind the second connector, and a wire lead-out port that leads the plurality of electric wires outward. prepare for And wherein the Rukoto.

  According to the said structure, since the protective cover is comprised from a pair of division | segmentation cover body divided | segmented along the fitting direction of a connector, it can be attached | attached with respect to the connector of a fitting state by retrofit. In addition, since the pair of divided cover bodies assembled and fixed to each other can be fixed and released only by a dedicated jig, it is difficult to remove the protective cover from the connector when the dedicated jig is not held.

  Moreover, since the protective cover has a locking portion that locks with the locked portion of the first connector, the protective cover not only simply covers the connector but also is directly fixed to the connector. With these configurations, it is difficult to remove the protective cover or forcibly destroy a part thereof, and the connector cannot be unfitted. That is, unauthorized access from the front of the connector can be suppressed.

  Moreover, since the protective cover is adapted to lead out the plurality of wires from the wire lead-out port while covering the lead-out portions of the plurality of wires from the second connector with the lead-out covering portion, Unauthorized access can also be suppressed.

  The security structure of the connector may have the following configuration.

  The protective cover may include an electric wire converging unit that converges the plurality of electric wires led out from the second connector toward the electric wire outlet.

  According to such a configuration, since the plurality of wires led out from the second connector are led out from the wire lead-out port after being converged by the wire converging unit, the terminal to which each wire is connected is outside. It is difficult to understand. Moreover, since the wire outlet can be set as small as possible, unauthorized access from the back surface of the second connector can be made more difficult.

  The protective cover may include a plug that closes gaps between the wire outlet and the plurality of wires. According to such a configuration, the gap is reduced by the plug, and unauthorized access from the back surface of the second connector can be further prevented.

  Moreover, you may provide a latching | locking part in the inner wall of the protection cover of an assembly | attachment state. According to such a configuration, since the locking structure of the locking portion and the locked portion is not exposed to the outside of the protective cover, the fixed state between the protective cover and the connector is stably maintained. As a result, since the fitting state of the connector is stably maintained, unauthorized access from the front of the connector can be suppressed.

  The second connector is provided with a lock arm that cantilevered toward the rear side on the outer wall of the second connector and locks the first connector in a fitted state. The end may be arranged to protrude outward from the first connector, and the fitting cover may be provided with a receiving recess into which the rear end of the lock arm is fitted.

  According to such a configuration, the lock arm is covered with the fitting covering portion and cannot be directly operated from the outside of the protective cover. That is, since the connector cannot be released unless the protective cover is removed from the connector, unauthorized access to the connector can be suppressed more reliably.

  In addition, since the receiving recess is provided on one side of the pair of divided cover bodies that covers the lock arm, the pair of divided cover bodies can be attached to the connector in the correct orientation.

  According to the technology disclosed in this specification, unauthorized access to a connector can be suppressed.

The disassembled perspective view which shows the security structure of the connector of one Embodiment Similarly side sectional view A perspective view of the completed form Side view of the completed form The perspective view of the 1st division | segmentation cover body of a protective cover The perspective view of the 2nd division | segmentation cover body of a protective cover Configuration diagram showing an example of a vehicle control system Configuration diagram showing an example of a conventional vehicle control system

  One embodiment will be described with reference to FIGS.

  This embodiment is a security structure 1 for a connector mounted on a vehicle. As shown in FIG. 1, a protective cover 40 covers a connector 5 in a fitted state in which a device-side connector 10 and a wire-side connector 20 are fitted. It is covered with. FIG. 2 is an exploded side cross-sectional view. The connector 10 shown on the left side in FIG. 2 is a device-side connector 10 provided in a case (not shown) of an electrical connection box such as a GW, and the right side is fitted to the device-side connector 10. It is the electric wire side connector 20 to be performed. In the following description, the upper side of FIG. 2 is the upper side, the lower side is the lower side, the direction perpendicular to the plane of FIG. 2 is the width direction, the fitting direction with the mating connector is the front, and the fitting / removing direction is the rear.

  The device-side connector 10 (an example of a first connector) includes a device-side housing 11 provided in a case (not shown) in which the printed circuit board 16 is housed, and a tab-shaped male terminal 17 held by the device-side housing 11. , And is configured.

  The device-side housing 11 has a hood shape, and the opening is arranged so as to open to the side of the plate surface of the printed circuit board 16 and to the outside of the case. Further, a tab-like male terminal 17 projects from the inner wall 12 toward the opening. The male terminal 17 has an L shape in which one end side is connected to an electronic circuit (not shown) of the printed circuit board 16 and an intermediate portion is bent, and the other end side penetrates the back wall 12 of the device side housing 11. , Projecting from the inside of the case into the device-side housing 11.

  Of the upper wall 13 of the device-side housing 11, a lock arm 25 of the electric wire-side housing 21, which will be described later, is provided on the inner wall slightly forward (right side in FIG. 2) from the center in the fitting direction (left-right direction in FIG. 2). A locking portion 14 for locking is provided. The locking portion 14 is formed by forming a step in the direction in which the plate thickness of the upper wall 13 decreases from the front (opening side) to the rear (back wall 12 side) of the device-side housing 11.

  Further, an engaging groove 15 (an example of a locked portion) that is recessed inward from the outer surface is provided on the front side of the locking portion 14 over the entire circumference of the device-side housing 11.

  On the other hand, the electric wire side connector 20 (an example of the second connector) is made of a synthetic resin that is fitted in the apparatus side housing 11 while accommodating the female terminal 30 connected to the end of the electric wire W and the female terminal 30 inside. And an electric wire side housing 21.

  More specifically, the electric wire side housing 21 includes a housing main body 22 having a cavity 23 in which the female terminal 30 is accommodated from the rear, and a lock arm 25 integrally provided on the upper wall 24 of the housing main body 22. ing. The female terminal 30 is held in the cavity 23 so as not to be detached by a lance (not shown) formed at the bottom of the cavity 23.

  The lock arm 25 has an elongated shape in the front-rear direction and extends in a cantilevered manner from a position slightly in front of the housing body 22 toward the rear side from the front-rear center, and is elastically tiltable in the vertical direction. Yes.

  In the vicinity of the center of the lock arm 25 in the front-rear direction, a locking claw 26 for locking to the locking portion 14 of the device-side housing 11 protrudes upward. The front surface side (left side in FIG. 2) of the locking claw 26 is an inclined surface 26A that is inclined rearward and upward.

  Further, the rear end portion of the lock arm 25 rises upward in an L shape, and serves as a release operation portion 27 for performing a lock release operation by pressing the lock arm 25 downward. The release operation unit 27 has a dimension that protrudes outward from the front end of the device-side housing 11 when both the connectors 10 and 20 are fitted.

  In the process of fitting the device-side connector 10 and the wire-side connector 20, the lock arm 25 is elastically directed toward the housing body 22 by being pushed down by the upper wall 13 of the device-side housing 11 while being guided by the inclined surface 26A. Displaced. When the device-side connector 10 and the wire-side connector 20 reach the proper mating position, the lock arm 25 is elastically restored, and the locking claw 26 and the locking portion 14 are locked in the front-rear direction. As shown in FIG. 2, both connectors 10 and 20 are held in a properly fitted state.

  Further, when releasing the fitting state of both the connectors 10 and 20, the lock arm 25 is elastically displaced by pressing the release operation portion 27 toward the housing body 22, and the lock claw 26 is locked. The locked state with the portion 14 can be released.

  On the other hand, the protective cover 40 includes a pair of divided cover bodies 40A and 40B divided along the fitting direction of the connectors 10 and 20. Hereinafter, the divided cover body disposed on the upper side in FIGS. 1 and 2 will be described as a first divided cover body 40A, and the divided cover body disposed on the lower side will be described as a second divided cover body 40B. 3 and 4, the state in which the first divided cover body 40A and the second divided cover body 40B are assembled will be described as the protective cover 40.

  The protective cover 40 has a flat box shape that covers the plurality of electric wires W connected to the female terminals 30 from the vicinity of the front end of the device-side connector 10 in the mated connector 5 and drawn out to the rear of the electric wire-side connector 20. ing. More specifically, the protective cover 40 covers the fitting cover 41 that covers the boundary between the device-side connector 10 and the wire-side connector 20 from the outside, and the lead-out that covers the lead-out portions from the wire-side connector 20 of the plurality of wires W. A covering portion 42, a wire converging portion 43 for converging a plurality of wires W led out from the wire-side connector 20 toward the rear, and a wire lead-out port 44 for guiding the converged wires W to the outside of the protective cover 40. And. The electric wire outlet 44 is provided with a plug 70 that closes gaps between the electric wire outlet 44 and the plurality of electric wires W.

  The fitting cover portion 41 projects in the vertical direction through a standing wall 45 erected outward (vertical direction) from the lead-out cover portion 42, and the front end portion of the device-side housing 11, that is, the device-side connector 10. A region including the boundary with the electric wire side connector 20 is covered from the outside, and a pair of engagement ribs 46A and 46B are provided on the inner wall along the width direction. Of these engagement ribs 46A and 46B, the first engagement rib 46A (an example of a locking portion) on the end side (left side in FIG. 2) fits into the above-described engagement groove 15 of the device-side housing 11. The second engagement rib 46B on the other side (the right side in FIG. 2) is in contact with the front end surface of the device-side housing 11 so that the second engagement rib 46B is in contact with the first engagement rib 46A. The position and dimension are set so as to sandwich a region on the front side of the side housing 11 from the engagement groove 15 (see FIG. 4). In other words, the first engagement rib 46 </ b> A and the second engagement rib 46 </ b> B are alternately meshed with the front end portion of the device-side housing 11.

  Further, the standing wall 45 is disposed at a position along the end surface of the connector 5 (the right side surface in FIG. 4) in a state where the protective cover 40 is attached to the connector 5. A receiving recess 47 into which the release operation portion 27 of the lock arm 25 protruding from the device-side housing 11 is fitted is provided on the inner surface side (the left surface in FIG. 2).

  The electric wire converging portion 43 is provided continuously to the lead-out covering portion 42, and has a tapered shape in which the width dimension is gradually narrowed toward the rear. The plurality of electric wires W drawn out from the electric wire side connector 20 are bundled toward the rear side by the electric wire converging portion 43, and are led out from an electric wire outlet port 44 provided at the rear end portion of the protective cover 40. .

  A pair of positioning ribs 48 extending in the width direction are provided in the vicinity of the electric wire outlet 44, and a rectangular parallelepiped closing plug 70 is disposed between the positioning ribs 48. The closing plug 70 is made of a synthetic resin having elasticity, and sandwiches a plurality of electric wires W from the vertical direction.

  As described above, the protective cover 40 is configured by assembling a pair of split cover bodies 40A and 40B. Among these, the lower end portions of both side walls of the first split cover body 40A are notched at predetermined widths inside. The first thin portion 49A is thinned by being cut (see FIG. 5), and the upper end portions of both side walls of the second divided cover body 40B are cut out by a predetermined width to make the second thin. The thin portion 49B is used (see FIG. 6). When the first divided cover body 40A and the second divided cover body 40B are assembled, the first thin-walled portion 49A and the second thin-walled portion 49B are overlapped so that the assembled state of the protective cover 40 is stable. Is supposed to be retained.

  The pair of divided cover bodies 40A and 40B are fixed to each other by a key portion 50 (an example of a fixing means) that can be fixed and released by a dedicated jig. The key portion 50 includes a pair of lock pins 51, a pair of fitting holes 54 into which the lock pins 51 can be fitted, and a lock member 60 that can lock and release the lock pins 51. It is configured.

  More specifically, as shown in FIG. 5, the pair of lock pins 51 are provided integrally with the first divided cover body 40 </ b> A, and in the front-rear direction (left-right direction in FIG. 2) on the lower surface side of the wire converging portion 43. It is lined up and protrudes downward in a round bar shape. Locking grooves 52 are cut out at positions facing each other in the pair of lock pins 51.

  On the other hand, as shown in FIG. 6, the fitting hole 54 is formed in a rectangular parallelepiped receiving portion 53 provided integrally in a region including a position corresponding to the pair of lock pins 51 in the second divided cover body 40B. Has been. Further, in the region where the receiving portion 53 is formed in the electric wire converging portion 43 of the second divided cover body 40B, an annular hole portion 55 formed in an annular shape from the lower surface side of the second divided cover body 40B upward. Is provided (see FIG. 2). The annular hole portion 55 is set to a position and a dimension at which a part of the outer peripheral edge portion communicates with the pair of fitting holes 54.

  A lock member 60 is fitted into the annular hole 55. The lock member 60 includes a disk-like operation portion 61 and a pair of locking pieces 62 that protrude upward from the operation portion 61 and are loosely fitted into the annular hole portion 55. At the tips of the pair of locking pieces 62, locking claws 63 for locking in the locking grooves 52 of the lock pin 51 are formed protruding outward, and these locking claws 63 are fitted. It protrudes into the hole 54. These locking claws 63 are inclined surfaces whose upper and both sides are obliquely cut out toward the outside. The pair of locking pieces 62 are set to dimensions that can be elastically deformed inward in the annular hole 55. A keyway (not shown) is formed on the outer surface (lower surface) of the operation unit 61.

  When the first divided cover body 40A and the second divided cover body 40B are assembled, the pair of lock pins 51 provided on the first divided cover body 40A is paired with the pair of fittings provided on the second divided cover body 40B. The engagement pin 54 is inserted into the engagement hole 54 and the engagement claw 63 of the lock member 60 is inserted into the engagement groove 52 of the lock pin 51, thereby locking the engagement state between the lock pin 51 and the engagement hole 54. It has come to be. That is, the assembled state (protective cover 40) of the first divided cover body 40A and the second divided cover body 40B is fixed (see FIG. 4).

  On the other hand, when removing the protective cover 40 from the connector 5, a dedicated jig (not shown) is fitted in the key groove provided in the operation portion 61 of the lock member 60, and the lock member 60 is rotated. Then, the latching claws 63 of the pair of latching pieces 62 are pushed by the inner walls of the fitting holes 54 and elastically deformed inward, and the entire latching claws 63 are retracted into the annular hole portion 55, The locked state between the pawl 63 and the locking groove 52 of the lock pin 51 is released. Accordingly, the lock pin 51 can be pulled out from the fitting hole 54, and the first divided cover body 40A and the second divided cover body 40B can be separated.

  The security structure 1 of the connector according to the present embodiment is as described above. Next, the function and effect will be described.

  According to the present embodiment, the protective cover 40 includes the first divided cover body 40A and the second divided cover body 40B that are divided along the fitting direction of the connector 5, and thus the connector 5 in the fitted state. Can be installed later. In addition, since the pair of divided cover bodies 40A and 40B can only unlock the key portion 50 by rotating the dedicated jig so as to match the key groove of the lock member 60, the dedicated jig can be removed. If it is not possessed, it is difficult to remove the protective cover 40 from the connector 5.

  Further, the protective cover 40 is configured such that the first engagement rib 46A engages with the engagement groove 15 provided in the device-side connector 10, so that the protection cover 40 not only covers the connector 5 but also the connector 5. It is designed to be fixed directly. Therefore, it is difficult to remove the protective cover 40 or forcibly destroy a part by inserting a jig from the end edge portion, so that the connector 5 cannot be released.

  In addition, since the first engagement rib 46 </ b> A is provided on the inner wall of the fitting covering portion 41, the engagement structure between the protective cover 40 and the connector 5 is not exposed to the outside of the protective cover 40. That is, the assembled state of the protective cover 40 is stably maintained, and consequently the fitting state of the connector 5 is stably maintained, so that unauthorized access from the front of the device-side connector 10 or the wire-side connector 20 is suppressed. be able to.

  In addition, the protective cover 40 leads the plurality of wires W outward from the wire lead-out port 44 while covering the lead-out portions of the plurality of wires W from the wire-side connector 20 with the lead-out covering portion 42. Unauthorized access from the back of the side connector 20 can also be suppressed.

  In addition, since the plurality of electric wires W are converged by the electric wire converging unit 43 and then led out from the electric wire outlet 44, the electric wire W to which each of the derived electric wires W is connected is outside. It is difficult to understand. Moreover, since the electric wire outlet 44 can be set as small as possible, unauthorized access from the back side of the electric wire side connector 20 can be made more difficult.

  Moreover, since the protective cover 40 includes the plug 70 that closes the gaps between the electric wire outlet 44 and the plurality of electric wires W, the gaps are reduced. That is, unauthorized access from the back side of the electric wire side connector 20 can be further prevented.

  Further, the lock arm 25 provided on the wire side connector 20 is covered with the fitting covering portion 41 at a portion exposed from the device side connector 10 when the device side connector 10 and the wire side connector 20 are fitted. Therefore, it cannot be directly operated from the outside of the protective cover 40.

  Further, the lock arm 25 is configured such that the release operation portion 27 at the rear end thereof is fitted into the receiving recess 47 provided on the inner side of the fitting covering portion 41, so that the first divided cover body 40 </ b> A and the second divided cover body 40 </ b> A are arranged. When the connector 5 is covered with the cover body 40B, the lock arm 25 becomes in the way and cannot be assembled even if the two are misplaced and tried to be assembled from the wrong direction. That is, since the wrong orientation is recognized, the pair of split cover bodies 40A and 40B can be attached to the connector 5 in the correct orientation.

  According to this embodiment, in the in-vehicle connector 5, the connector security structure 1 capable of suppressing unauthorized access is obtained. That is, illegal acquisition of information due to EUC unauthorized connection or tapping can be prevented (see FIG. 7).

<Other embodiments>
The technology disclosed in this specification is not limited to the embodiment described with reference to the above description and drawings, and for example, the following embodiments are also included in the technical scope.

  (1) Although the electric wire converging portion 43 is provided in the protective cover 40 in the above embodiment, the electric wire converging portion 43 is not necessarily required, and may be a simple rectangular box-shaped protective cover.

  (2) Further, the plug 70 is not necessarily required, and may be omitted when the wire outlet is sufficiently small with respect to the plurality of wires W and there are almost no gaps.

  (3) In the above embodiment, the engagement structure of the engagement groove 15 of the device-side connector 10 and the first engagement rib 46A of the protective cover 40 is covered by the fitting cover portion 41 and exposed outside the protective cover 40. For example, the U-shaped locking piece extending from the front edge of the protective cover is hooked on the protrusion provided on the device-side connector and locked to the outside. A part may be provided.

  (4) In the above embodiment, the receiving recess 47 for fitting the release operation portion 27 of the lock arm 25 is provided inside the protective cover 40. However, when the lock arm and the protective cover do not interfere with each other. The omission recess 47 may be omitted.

  (5) The fixing structure of the first divided cover body 40A and the second divided cover body 40B is not limited to the key part 50, and any fixing means can be used to fix and release using a dedicated jig. The thing of such a structure may be sufficient.

DESCRIPTION OF SYMBOLS 1 ... Connector security structure 5 ... Connector 10 ... Device side connector (1st connector)
15 ... engagement groove (locked part)
20 ... Electric wire side connector (second connector)
25 ... Lock arm 27 ... Release operation part (rear end)
40 ... Protective cover 40A ... 1st division cover body 40B ... 2nd division cover body 41 ... Fitting covering part 42 ... Derivation covering part 43 ... Electric wire converging part 44 ... Electric wire outlet 46A ... First engagement rib (locking part) )
46 ... Receiving recess 50 ... Key part (fixing means)
51 ... Lock pin 54 ... Fitting hole 60 ... Lock member 70 ... Closure W ... Electric wire

Claims (6)

A connector security structure in which a connector in which a first connector and a second connector are fitted is covered with a protective cover,
The outer wall of the first connector is provided with a locked portion, and a plurality of electric wires are led out from the rear to the second connector,
The protective cover includes a pair of divided cover bodies that are divided along the fitting direction of the first connector and the second connector, and the pair of divided cover bodies are fixed and releasable by a dedicated jig. Are assembled and fixed to each other by means,
The protective cover in the assembled state is
A fitting cover that covers a boundary between the first connector and the second connector in a fitted state;
A locking portion for locking to the locked portion of the first connector;
A lead-out covering portion covering a lead-out portion from the second connector of the plurality of electric wires;
A wire outlet for leading the plurality of wires to the outside;
The connector security structure. 2. The connector security structure according to claim 1, wherein the protective cover includes a wire converging portion that converges the plurality of wires led out from the second connector toward the wire lead-out port. 3. The connector security structure according to claim 1, wherein the protective cover includes a plug that closes gaps between the electric wire outlet and the plurality of electric wires. 4. The security structure of the connector according to any one of claims 1 to 3, wherein the locking portion is provided on an inner wall of the protective cover. The second connector is provided with a lock arm that cantilevered outwardly on the outer wall of the second connector and locks the first connector in a fitted state. In the combined state, the rear end protrudes outward from the first connector,
The connector security structure according to any one of claims 1 to 4, wherein the fitting cover is provided with a receiving recess into which a rear end of the lock arm is fitted. A protective cover used for a security structure of a connector in which a first connector and a second connector are fitted,
It consists of a pair of division | segmentation cover bodies divided | segmented along the fitting direction of the said 1st connector and the said 2nd connector, and this pair of division | segmentation cover bodies are mutually assembled | attached by the fixing means which can be fixed-released with an exclusive jig. It is supposed to be fixed
In the assembled state of the pair of split cover bodies,
A fitting cover that covers a boundary between the first connector and the second connector in a fitted state;
A locking portion for locking to a locked portion provided on the outer wall of the first connector;
A lead-out covering portion covering a lead-out portion from the second connector of a plurality of electric wires led out from the rear of the second connector;
A protective cover, comprising: a wire outlet for leading the plurality of wires outward.

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