Connector aggregation device, connector group, and method for connecting connector group

Abstract

To provide a connector aggregation device capable of making a physical attack on a connector difficult.SOLUTION: A device according to one aspect of the present disclosure is a connector aggregation device including a wiring aggregation portion in which a plurality of portions to be connected are arranged, and a connector group connected to the plurality of portions to be connected, wherein the connector group includes at least two connectors each having an order restricting portion that restricts an order of releasing connection from the wiring aggregation portion to first in and then out.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to a connector aggregation device, a connector group, and a method for connecting a connector group. [Background technology]

[0002] Patent Document 1 describes an electrical junction box that can reduce the number of parts and improve ease of assembly and maintenance. The electrical junction box of Patent Document 1 is attached to a trim cover facing the cowl side panel, and is provided with a connector that is automatically coupled to a mating connector on the cowl side panel when the trim cover is closed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-8013 Summary of the Invention [Problem to be solved by the invention]

[0004] It is known that the cowl side of a vehicle is likely to be a target of physical attacks by suspicious individuals. However, Patent Document 1 does not anticipate measures to make physical attacks on connectors provided on the cowl side difficult. In view of the above-described conventional problems, the present disclosure aims to provide a connector aggregation device and the like that can make physical attacks on connectors more difficult. [Means for solving the problem]

[0005] An apparatus according to one embodiment of the present disclosure is a connector aggregation apparatus comprising a wiring aggregation section in which a plurality of connectable parts are arranged, and a group of connectors connected to the plurality of connectable parts, wherein the group of connectors includes at least two connectors having an order restriction section that restricts the order of disconnection from the wiring aggregation section to first-insertion, then-removal. [Effects of the Invention]

[0006] According to the present disclosure, physical attacks on connectors can be made more difficult. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view showing an example of a connector aggregation device. [Figure 2] FIG. 2 is a perspective view showing an example of a wiring gathering portion. [Figure 3] FIG. 3 is a perspective view illustrating an example of the configuration of the order restriction unit. [Figure 4] FIG. 4 is an explanatory diagram showing an example of connection routes and release routes of a connector group. [Figure 5] FIG. 5 is an explanatory diagram showing a modified example of the order restriction unit. [Figure 6] FIG. 6 is an explanatory diagram showing an example of a female connector having an operating portion. [Figure 7] FIG. 7 is a perspective view showing an example of a connector assembly. DETAILED DESCRIPTION OF THE INVENTION

[0008] <Summary of Embodiments of the Present Disclosure> The following provides an outline of embodiments of the present disclosure.

[0009] (1) A device according to one aspect of this embodiment is a connector aggregation device including a wiring aggregation section in which a plurality of connectable parts are arranged, and a group of connectors connected to the plurality of connectable parts, wherein the group of connectors includes at least two connectors having an order restriction section that restricts the order of disconnection from the wiring aggregation section to first-insertion, then-removal.

[0010] According to the connector aggregation device of this embodiment, the order in which at least two connectors can be disconnected from the wiring aggregation section is limited to first-insertion-then-removal, which increases the time required for the disconnection operation compared to when disconnection is possible in any order, thereby making physical attacks on the connectors more difficult.

[0011] (2) In the connector aggregation device of (1) above, the at least two connectors may include a leading connector and a trailing connector connected after the leading connector, and the order restriction portion may include a leading tab protruding from the leading connector and a trailing tab protruding from the trailing connector and having an end that engages with the leading tab. In this case, simply by adding tabs to the preceding and succeeding connectors, an order restriction unit that performs the above-mentioned function can be obtained, which has the advantage that the order restriction unit can be constructed inexpensively.

[0012] (3) In the connector aggregation device of (2) above, the trailing tab may engage with the leading tab of the leading connector that is one connector ahead of the trailing connector in the connection order. In this case, the release of the preceding connector can be restricted.

[0013] (4) In the connector aggregation device of (2) or (3) above, the trailing tab may engage with the leading tab of the leading connector that is two or more connectors ahead of the trailing connector in the connection order. In this case, it is possible to restrict the release of preceding connectors two or more ahead.

[0014] (5) In the connector aggregation device of (1) to (4) above, the at least two connectors may include three or more connectors, and the release route for releasing the three or more connectors may be a route having at least one bend along the way. In this case, a complex release route other than a straight route can be adopted, and therefore the number of connectors that impose order restrictions on the wiring aggregation section can be increased compared to when only straight routes are adopted.

[0015] (6) In the connector aggregation device of (1) to (5) above, the connection order of the at least two connectors may be determined based on an evaluation policy defined from the perspective of vehicle security risk, and the evaluation policy may be such that the connector with the higher security risk is connected first. In this way, it becomes more difficult to release connectors that pose a high security risk, thereby improving vehicle security compared to when priority based on security risk is not taken into consideration.

[0016] (7) In the connector aggregation device of (6) above, the level of the security risk may be determined based on at least one of a risk assessment value determined in accordance with the procedure specified in ISO / SAE 21434, a risk assessment value based on the vehicle control type, and a risk assessment value based on the type of communication protocol. In this case, the degree of security risk is quantified based on the risk assessment value, so that the connection order can be determined objectively and accurately.

[0017] (8) In the connector aggregation devices of (1) to (7) above, the at least two connectors may include a connector having a side surface where the distance between adjacent connectors is less than the width of a human finger, and an operating unit for unlocking the connection is provided on the side surface. In this case, since the opposing distance is narrow, it is difficult to access the operating unit, making it more difficult to physically attack the connector than when the operating unit is located in an easily accessible location.

[0018] (9) In the connector aggregation devices of (1) to (8) above, the connector group may be configured as a connector assembly in which a plurality of connectors are integrated by a runner. In this case, all the connectors can be connected to the multiple connection targets at once, making the connection work to the wiring collection section easier than when connecting each connector one by one.

[0019] (10) A device according to another aspect of this embodiment is a group of connectors used as components of the connector aggregation device described above in (1) to (9). Therefore, the connector group of this embodiment has the same effects as the connector aggregation device described above in (1) to (9).

[0020] (11) A method according to one aspect of this embodiment is a method for connecting a group of connectors to a plurality of connectable parts arranged in a wiring collection section, the group of connectors including a first connector and a second connector that physically restricts the disconnection of the first connector by connecting itself, and the method includes the steps of connecting the first connector, which poses a higher security risk than the second connector, to one of the plurality of connectable parts before the second connector, and connecting the second connector to another of the plurality of connectable parts.

[0021] According to the connection method of this embodiment, the first connector, which poses a higher security risk, is connected to the wiring collection section first, so that during the disconnection process, the first connector cannot be disconnected unless the second connector is disconnected, which makes disconnecting the first connector more time-consuming. In this way, the effort required to release the first connector, which poses a higher security risk, increases, thereby improving security compared to when the release order is reversed or when the release order is not specified.

[0022] <Details of the embodiment of the present disclosure> DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings. At least some of the embodiments described below may be combined in any desired manner.

[0023] [Definition of terms] Before describing the details of the embodiments of the present disclosure, key terms will first be defined. "Male connector": A housing that is connected to the end of a transmission line and has a protrusion that fits into the insertion port of a female connector. The housing of a male connector can be made of either plastic or metal, or it can be a composite of plastic and metal.

[0024] "Female connector": A housing that is connected to the end of a transmission line and has an insertion opening that accepts the protrusion of a male connector. The housing of a female connector can be made of either plastic or metal, or a composite of plastic and metal. "Connector": A general term for male or female connectors before they are connected to each other. "Connector group": A group of connectors that are connected to a plurality of connected parts that are arranged in a concentrated manner. The connector group may consist of only male connectors, only female connectors, or both male and female connectors.

[0025] "Transmission line": An insulated wire or cable routed inside a vehicle. The insulated wire may be a single wire or multiple stranded or flat wires. The cable may have at least two wires inside a sheath, and may be either a round wire or a flat wire. "Wire harness": A collection of transmission parts with either or both male and female connectors attached to both ends of a transmission line. Also called a cable assembly.

[0026] "Extension direction": When the transmission wire of the wire harness is extended in a substantially straight line, this refers to the direction along the center line of the straight transmission wire. "First direction": The extension direction of the wire harness. In this embodiment, the direction of the X axis (X direction) in the illustrated three-dimensional coordinate system is defined as the first direction (extension direction).

[0027] "Second direction": Any in-plane direction of a virtual plane S (see FIG. 1) whose normal coincides with the first direction (stretching direction), and which is perpendicular to the first direction. In this embodiment, the direction of the Y axis (Y direction) in the illustrated three-dimensional coordinate system is defined as the second direction. "Third direction": A direction perpendicular to the first and second directions among the in-plane directions of a virtual plane S (see FIG. 1) whose normal coincides with the first direction (stretching direction). In this embodiment, the direction of the Z axis (Z direction) in the illustrated three-dimensional coordinate system is defined as the third direction.

[0028] [Example of connector aggregation device structure] FIG. 1 is a perspective view showing an example of a connector aggregation device 1. As shown in FIG. FIG. 2 is a perspective view showing an example of the wiring collection section 3 in a state where the connector group 2 is removed from the connector collection device 1. As shown in FIG. As shown in FIGS. 1 and 2, a connector aggregation device 1 of this embodiment includes a connector group 2 and a wiring aggregation section 3.

[0029] The connector group 2 is made up of a plurality of (11 in the illustrated example) female connectors 21 with different YZ plane shapes. One end of a transmission line 22 is connected to the female connector 21. The female connector 21 and the transmission line 22 are components of one wire harness 23. Therefore, when the female connector 21 is connected to the male connector 32 of the wiring collection section 3 described later, the transmission line 22 of the wire harness 23 is electrically connected to a circuit board or transmission line (not shown) housed inside the wiring collection section 3.

[0030] Female connector 21 has an insertion opening (not shown) that opens on the negative side in the X direction. Male connector 32 has an outer peripheral surface with substantially the same YZ plane shape as the insertion opening of female connector 21, and can be fitted into the insertion opening in a friction fit state. Therefore, the connecting direction of the female connector 21 to the male connector 32 of the wiring collection section 3 is the negative side in the X direction. Conversely, the releasing direction of the female connector 21 from the male connector 32 of the wiring collection section 3 is the positive side in the X direction.

[0031] The wiring collection unit 3 is a type of in-vehicle device such as an electronic control unit (ECU) for a vehicle, a gateway, etc. However, the wiring collection unit 3 may also be a junction box in which a plurality of transmission lines are housed inside a casing. The wiring collection section 3 includes a flat box-shaped housing 31 and a plurality of (11 in the illustrated example) male connectors 32 collected in the housing 31. Each male connector 32 of the wiring collection section 3 functions as a "receiving part" that accepts connection of the female connector 21.

[0032] The housing 31 is a flat casing with the shortest dimension in the X direction, and the inside of the casing accommodates a circuit board, signal lines, power lines, etc. The housing 31 has a substantially flat arrangement surface 33 on which multiple male connectors 32 are arranged in the same orientation. The YZ plane shape of the array surface 33 is substantially rectangular, and a plurality of male connectors 32 are densely arranged within the in-plane range of the array surface 33. Each of the plurality of male connectors 32 protrudes toward the positive side in the X direction.

[0033] [Connector reference numbers and connection order] As shown in Figure 1, the reference symbol of the female connector 21 that constitutes the connector group 2 may be written as "Fi" (i = 1, 2, ... 11). Similarly, as shown in Figure 2, the reference symbol of the mating male connector 32 to which the female connector Fi is connected may be written as "Mi" (i = 1, 2, ... 11). The subscript "i" of the reference symbols Fi and Mi is an identification number that indicates the connection order of the female connector 21 and the male connector 32.

[0034] Each female connector Fi constituting the connector group 2 has an "order restriction section 40" (see FIG. 3) that restricts the order of disconnection from the wiring gathering section 3 to first-insertion-last-removal. The order restriction unit 40 is a member that imposes a physical restriction on the release operation of the following preceding connector Fk, making the release operation of the following following connector Fk+1 a condition. Predecessor connector Fk: female connector 21 whose identification number i is k (where "k" is a natural number variable in the range of 1≦k≦10) Subsequent connector Fk+1: female connector 21 whose identification number i is k+1

[0035] [Configuration example of the order restriction unit] FIG. 3 is a perspective view showing an example of the configuration of the order restriction unit 40. As shown in FIG. As shown in FIG. 3, the order-restricting portion 40 of this embodiment includes a leading tab 41 protruding from the leading connector Fk and a trailing tab 42 protruding from the trailing connector Fk+1 and having an end that engages with the leading tab 41.

[0036] The leading tab 41 is, for example, a plate piece that protrudes in a cantilevered manner from a side surface 41a of the leading connector Fk toward the following connector Fk+1. The following tab 42 is, for example, a plate piece that protrudes in a cantilevered manner from a side surface 42a of the following connector Fk+1 toward the leading connector Fk. The base ends of the tabs 41, 42 are not limited to the side surfaces 41a, 42a. However, from the viewpoint of making the presence of the tabs 41, 42 as inconspicuous as possible, it is preferable that the base ends of the tabs 41, 42 be located on the side surfaces 41a, 42a.

[0037] The condition for the positional relationship between the leading tab 41 and the trailing tab 42 in the X direction is that the trailing tab 42 is located on the positive side of the leading tab 41 in the X direction. In other words, the protrusion amount and X-direction position of both tabs 41, 42 are specified so that when the leading and trailing connectors Fk, Fk+1 are properly inserted into the mating female connectors Mk, Mk+1, the free end of the trailing tab 42 overlaps with the leading tab 41 from the positive X-direction side.

[0038] When the leading tab 41 and the trailing tab 42 are in the above-described positional relationship, if an attempt is made to disconnect the leading connector Fk while the trailing connector Fk+1 remains connected, the leading tab 41 will get caught on the trailing tab 42, physically restricting the disconnection of the leading connector Fk. In the example of Figure 3, two cases, k=11 and k=10, are illustrated, but in the case of k=9 or less, a sequence restriction section 40 is similarly configured, consisting of a pair of a preceding tab 41 of the preceding connector Fk and a following tab 42 of the following connector Fk+1.

[0039] [Connection and disconnection order] FIG. 4 is an explanatory diagram showing an example of the connection and disconnection sequences of the female connector Fi. As shown in Figure 4, in the connector group 2 of this embodiment, for all female connectors Fi that make up the connector group 2, an order restriction section 40 is provided between the preceding connector Fk and the succeeding connector Fk+1 (k = 1, 2 ... 10).

[0040] Therefore, the connection order of the female connectors Fi to the wiring collection section 3 is F1→F2→F3→F4→F5→F6→F7→F8→F9→F10→F11. Hereinafter, the route on the YZ plane (solid arrow in Figure 4) that represents the work trajectory when the above connection sequence is performed will be referred to as the "connection route CR." As shown in Figure 4, the connection route CR is a spiral with female connector F1 as the start point (white circle) and female connector F11 as the end point (black circle).

[0041] The female connectors Fi are released from the wiring collection section 3 in the following order: F11, F10, F9, F8, F7, F6, F5, F4, F3, F2, and F1. Hereinafter, the route on the YZ plane (the dashed-dotted arrow in Figure 4) that represents the work trajectory when the above release sequence is performed will be referred to as the "release route DR." As shown in Figure 4, the release route DR is a spiral with the female connector F11 as the start point (white circle) and the female connector F1 as the end point (black circle).

[0042] In the connector aggregation device 1 of this embodiment, even if a suspicious person tries to first remove the female connector F7, the subsequent connector F8 prevents the female connector F7 from being released. The same result occurs for any female connector Fi (i≠11) other than the last one in the connection order. In this way, since the female connector Fi cannot be disconnected in any other order than the predetermined disconnection order, the disconnection process takes longer than if it were possible to disconnect it in any order, making physical attacks on the female connector 21 more difficult.

[0043] As shown in FIG. 4, the connection route CR and the release route DR in this embodiment are routes that have multiple bends along the way. Specifically, of the 11 female connectors Fi, the six hatched female connectors (hereinafter referred to as "corner connectors") F2, F3, F5, F6, F8, and F9 have leading tabs 41 and trailing tabs 42 that protrude in perpendicular directions, thereby forming nodes that bend the connection route SR and release route DR.

[0044] If the connection route CR and the release route DR are bent by the corner connectors F2, F3, F5, F6, F8, and F9, it becomes possible to adopt spiral routes CR and DR as shown in FIG. 4, for example. Therefore, compared to when the corner connectors F2, F3, F5, F6, F8, and F9 are not used, the number of female connectors Fi to which order restrictions are applied can be increased.

[0045] The connection route CR and the release route DR may have a shape other than a spiral, such as a zigzag shape. Furthermore, the connection route CR and the release route DR may be any route that has at least one bend along the way.

[0046] [How to determine the connection order] The connection order of the female connectors Fi to the male connectors Mi is determined based on an "evaluation policy" defined from the perspective of vehicle security risks. Specifically, the evaluation policy is to connect the female connector Fi first, so that the female connector Fi has a higher security risk. As the security risk of a vehicle, for example, a risk evaluation value E that numerically expresses the magnitude of the risk can be used.

[0047] In this case, if a large risk assessment value E indicates a high risk, the identification number i of the female connector Fi with a large risk assessment value E is set as small as possible. In other words, priority is given to the connection work of the female connector Fi connected to the communication transmission line 22 with a high risk assessment value E. For example, when the risk assessment values ​​E of the female connectors Fi are as follows, the connection order of the female connectors Fi is, for example, F1 → F2 → F3 → F4 → F5.

[0048] Connector F1:E=8 Connector F2:E=6 Connector F3:E=5 Connector F4:E=5 Connector F5:E=2

[0049] In this way, if a priority order is adopted in which the female connector Fi with a higher security risk is inserted first, it becomes more difficult to disconnect the female connector Fi with a higher security risk. Therefore, security can be improved more than when priority based on security risk is not taken into consideration.

[0050] In the above example, since the risk assessment values ​​E of both female connectors F3 and F4 are "5," female connector F4 may be connected before female connector F3. The risk evaluation value E may be, for example, an evaluation value determined by the procedure specified in ISO / SAE 21434. The risk assessment value E may be set according to the type of vehicle control or the type of communication protocol, such as CAN (Controller Area Network) or Ethernet (registered trademark).

[0051] An example of setting the risk assessment value E based on the type of vehicle control is to increase the assessment value for controls related to vehicle driving, such as engine control and steering control, and decrease the assessment value for media-related controls, such as audio and navigation. An example of setting the risk assessment value E based on the type of communication protocol is to increase the assessment value for CAN communication, which is likely to be related to vehicle driving, and decrease the assessment value for Ethernet communication, which is unlikely to be related to vehicle driving.

[0052] [First Modification] FIG. 5 is an explanatory diagram showing a modified example of the order restriction unit 40. In FIG. As shown in Figure 5, the order restriction unit 40 of the modified example includes two subsequent tabs 42A, 42B provided at the subsequent connector Fj+3 (where "j" is a natural number variable in the range of 1≦j≦8), a preceding tab 41A provided at the preceding connector Fj+2 that is one connector ahead in the connection order, and a preceding tab 41B provided at the preceding connector Fj+1 that is two connectors ahead in the connection order.

[0053] Of the two trailing tabs 42A, 42B, one trailing tab 42A engages with the leading tab 41A of the leading connector Fj+2 to regulate release, and the other trailing tab 42B engages with the leading tab 41B of the leading connector Fj+1 to regulate release. That is, the order restriction unit 40 in the modified example has not only tabs 41A and 42A that restrict the release of the preceding connector Fj+2, which is one connector in the connection order, but also tabs 41B and 42B that restrict the release of the preceding connector Fj+1, which is two connectors in the connection order.

[0054] In this way, the target of the restriction on release by the succeeding connector Fj+3 is not limited to the preceding connector Fj+2 immediately before, but may be the preceding connector F+1 two connectors before. Also, although not shown, it may be the preceding connector three or more connectors before. According to the first variant, by adopting a subsequent connector Fj+3 that restricts the release of the two preceding connectors Fj+2 and Fj+1, there is an advantage that the connection route CR and the release route DR can be configured as branching routes with the subsequent connector Fj+3 as the branching point.

[0055] [Second Modification] FIG. 6 is an explanatory diagram showing an example of a female connector 21 having an operating portion 50. As shown in FIG. As shown in FIG. 6, female connector 21 according to the modified example has a locking mechanism (not shown) that maintains the connected state with male connector 32, and an operating part 50 for releasing the locking mechanism. The operating portion 50 is, for example, a push button that protrudes from a side surface 50a of the female connector 21. The operating portion 50 is normally biased to a protruding state, and releases the lock when pressed.

[0056] The distance D between the side surface 50a on which the operation unit 50 is provided and the adjacent female connector 21 is set to be less than the width of a human finger. The distance D less than the width of a human finger may be, for example, about 4 mm to 8 mm. According to the second modification, access to operation unit 50 is difficult because opposing distance D is narrow. This has the advantage of making physical attacks on female connector 21 more difficult than when operation unit 50 is located in an easily accessible location.

[0057] [Third Modification] FIG. 7 is a perspective view showing an example of the connector assembly 25. As shown in FIG. As shown in FIG. 7, the connector group 2 according to the modified example is configured by a connector assembly 25 in which a plurality of female connectors 21 are integrated together by a runner 24.

[0058] In the connector assembly 25 of FIG. 7, the female connectors F1 to F11 are arranged in appropriate positions so that the YZ plane positions of the insertion openings of the female connectors F1 to F11 match the YZ plane positions of the mating male connectors M1 to M11. Furthermore, each of the female connectors F1 to F11 included in the connector assembly 25 is integrally formed with a sequence-limiting portion 40 made up of a leading tab 41 and a trailing tab .

[0059] By adopting the connector group (connector assembly 25) according to the modified example, all of the female connectors F1 to F11 can be connected at once to the male connectors M1 to M11 of the wiring collection section 3. This has the advantage of simplifying the connection work to the wiring collection section 3. After the connection is complete, the female connectors F1 to F11 can be individually separated by cutting the runner 24 with a tool such as nippers.

[0060] [Other Modifications] The embodiments disclosed herein are illustrative in all respects and are not restrictive. The scope of the present invention is not limited to the above-described embodiments, but includes all modifications within the scope of equivalents to the configurations described in the claims. In the above-described embodiment, the plurality of connected parts of the wiring collection section 3 may be "female connectors" and the connector of the wire harness 23 may be "male connectors." Alternatively, the plurality of connected parts of the wiring collection section 3 may be arranged in a mixed arrangement of female connectors and male connectors.

[0061] In the above-described embodiment, the connector group 2 may be a group in which connectors 21 that employ the order restriction unit 40 and connectors that do not (not shown) are mixed. In this case, it is only necessary to determine which connectors should have the order restriction unit 40 depending on the level of the security risk, for example. [Explanation of symbols]

[0062] 1. Connector aggregation device 2 Connectors 3 Wiring collection section 21 Female connector (connector) 22 Transmission Line 23 Wire harness 24 Runner 25 Connector assembly 31 Case 32 Male connector (connected part) 33 Array Surface 40 Order Restriction Section 41 Leading Tab 41A Leading Tab 41B Leading Tab 41a side 42 Trailing Tab 42A Trailing Tab 42B Trailing Tab 42a side 50 Control section 50a side

Claims

1. a wiring collection section in which a plurality of connected parts are arranged; a connector group connected to the plurality of connected portions, The connector group includes: A connector aggregation device including at least two connectors each having an order restriction unit that restricts the order in which connections from the wiring aggregation unit are released to first-insertion-then-removal.

2. The at least two connectors include: a leading connector and a trailing connector connected to the leading connector, The order restriction unit 2. The connector aggregation assembly of claim 1, including a leading tab projecting from the leading connector and a trailing tab projecting from the trailing connector and having an end that engages the leading tab.

3. The subsequent tabs are:

3. The connector aggregation device according to claim 2, wherein the connector aggregation device engages with the leading tab of the leading connector that is one connector before the trailing connector in the connection order.

4. The subsequent tabs are:

3. The connector aggregation device according to claim 2, wherein the connector aggregation device engages with the leading tab of the leading connector that is two or more connectors ahead of the trailing connector in the connection order.

5. The at least two connectors include: three or more connectors; The release route for releasing the three or more connectors is:

5. The connector aggregation device according to claim 1, wherein the route has at least one bend along the route.

6. The connection order of the at least two connectors is The decision is based on an evaluation policy defined in terms of vehicle security risks, The evaluation policy is: The connector aggregation device according to claim 1 , wherein the connectors with a higher security risk are connected first.

7. The degree of security risk is as follows: Risk assessment values ​​determined according to the procedures specified in ISO / SAE 21434, A risk assessment value based on the vehicle control type, and The connector aggregation device according to claim 6, wherein the risk assessment value is determined based on at least one of risk assessment values ​​based on the type of communication protocol.

8. The at least two connectors include:

5. The connector aggregation device according to claim 1, further comprising a connector having a side surface where the distance between adjacent connectors is less than the width of a human finger, and an operating portion for unlocking the connection provided on the side surface.

9. The connector group includes:

5. The connector aggregation device according to claim 1, wherein the connector aggregation device is configured as a connector assembly in which a plurality of connectors are integrated by a runner.

10. A group of connectors connected to a plurality of connection parts arranged in a wiring collection section, A connector group including at least two connectors each having an order restriction section that restricts the order in which the connectors are disconnected from the wiring collection section to first-insertion and then-removal.

11. A method for connecting a group of connectors to a plurality of connection receiving parts arranged in a wiring collection section, comprising: The connector group includes: a first connector; and a second connector that applies a physical restriction to the disconnection of the first connector by connecting the first connector; The method comprises: connecting a first connector, which has a higher security risk than the second connector, to one of the plurality of connected portions before the second connector; and connecting the second connector to another one of the plurality of connectable portions.

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