In-vehicle device

Abstract

This in-vehicle device (1) comprises: a substrate (12), which is supplied with voltage and current from an in-vehicle battery, and on which are mounted a power supply circuit unit for internally distributing the voltage and current and a power-supply-related component (11) surrounding the power supply circuit unit; connectors (4, 5, 6) that are mounted on the substrate (12) and that electrically connect an external device and the substrate (12); and a housing (3) that houses the substrate (12) within and has a connector attachment part (2) defining attachment positions of the connectors (4, 5, 6). The housing (3) has at least one wall section (17, 16) that is inside the housing (3) and that protrudes toward the substrate (12) and extends along the attachment direction of the connector (6).

Description

[Technical field]

[0001] The present invention relates to an in-vehicle device. [Background technology]

[0002] There are many types of on-board devices. The locations where the on-board devices are installed also vary. In particular, when ease of maintenance is taken into consideration, the on-board device is installed in a location where an operator can easily touch it even when it is connected to the battery. In such cases, to ensure the safety of the operator, a structure is generally adopted that prevents the human body or tools used, i.e., foreign solid objects, from approaching the power supply-related parts of the on-board device.

[0003] Patent Document 1 describes a technique for preventing foreign solid objects from approaching power supply-related components in an in-vehicle device. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2017-162854 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the housing of the on-board device described in Patent Document 1, the connector cover closes the gap around the connector to prevent foreign solid objects from entering. However, the connector cover in Patent Document 1 cannot be installed from one direction during assembly, but must be moved from top to bottom and then moved to the board side and attached, which makes assembly time-consuming.

[0006] It is desirable for the in-vehicle device to have a configuration in which each part can be easily assembled by a robot or the like in the recent labor-saving process. Therefore, in order to absorb the dimensional error and assembly accuracy error of each product, there is a demand for an in-vehicle device having a structure that can prevent foreign solid objects from entering the in-vehicle device through a gap formed between the connector and the connector mounting portion and that can be easily assembled. In addition, there is a demand for a structure that can prevent the intrusion of foreign solid objects, such as a structure that can comply with standards such as the IP standard IP4X.

[0007] An object of the present invention is to provide an in-vehicle device that is capable of preventing foreign solid objects from approaching power supply related components and that is easy to install. [Means for solving the problem]

[0008] According to one aspect of the present invention, an in-vehicle device includes a board on which a power supply circuit section that receives a voltage and a current from an in-vehicle battery and distributes the voltage and the current internally and on which power-related components around the power supply circuit section are mounted, a connector that is mounted on the board and electrically connects an external device to the board, and a housing that houses the board and has a connector mounting section that defines a mounting position of the connector, the housing having a connector mounting section that is inside the housing, protruding toward the board and extending along the mounting direction of the connector. A first wall portion and a second wall portion are disposed opposite to each other so as to sandwich the power supply-related components. Have the housing has a front portion on which the connector mounting portion is provided and a rear portion opposed to the front portion, the first wall portion is disposed at a position overlapping a first connector of the connectors when viewed from a mounting direction of the connectors, and when a test probe having a diameter of 1 mm and a length of 100 mm is pushed with a pressing force of 1 N through a gap between a second connector adjacent to the first connector and the connector mounting portion disposed around the second connector on the first connector side, and the test probe comes into contact with a corner of the second connector on the front portion side and also comes into contact with a corner of the connector mounting portion on the rear portion side is defined as a first maximum movable state of the test probe toward the power supply related component, the first wall portion extends from the rear portion toward the front portion to a position where a tip of the test probe abuts against the first wall portion in the first maximum movable state. . Effect of the Invention

[0009] According to the present invention, it is possible to prevent foreign solid objects from approaching power supply related components, and to provide an in-vehicle device that is easy to install. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is an external perspective view showing an in-vehicle device according to the first embodiment. [Diagram 2]FIG. 2 is a front view of the in-vehicle device according to the first embodiment as viewed from the front direction of the housing. [Diagram 3] FIG. 3 is an exploded perspective view showing the in-vehicle device according to the first embodiment. [Figure 4] FIG. 4 is a cross-sectional view of the in-vehicle device according to the first embodiment taken along the cross-section line B-B of FIG. 5. [Diagram 5] FIG. 5 is a longitudinal sectional view of the in-vehicle device according to the first embodiment taken along the longitudinal section line A-A of FIG. 4. [Figure 6] FIG. 6 is a cross-sectional view showing the case where the test probe according to the first embodiment is inserted from the left-right direction into the gap between the connector and the connector mounting portion. [Figure 7] FIG. 7 is a longitudinal sectional view taken along the longitudinal section line C-C of FIG. 6 showing the case where the test probe according to the first embodiment is inserted from the up-down direction into the gap between the connector and the connector mounting portion. [Figure 8] FIG. 8 is a cross-sectional view showing the in-vehicle device according to the second embodiment. [Figure 9] FIG. 9 is a cross-sectional view showing the in-vehicle device according to the third embodiment. [Figure 10] FIG. 10 is a cross-sectional view showing the in-vehicle device according to the fourth embodiment.

MODE FOR CARRYING OUT THE INVENTION

[0011] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the embodiments can be combined as long as they do not conflict with each other. In each embodiment, the same components are denoted by the same reference numerals and the description thereof is omitted, and the characteristic parts are described. Also, in each figure, the U direction is the upward direction, the D direction is the downward direction, the F direction is the front direction, the B direction is the rear direction, the R direction is the right direction, and the L direction is the left direction.

[0012] <IP Standard> The IP standard is based on IEC (International Electrotechnical Standard) 60529 Amd.2 Ed.2.0 b Cor.1:2019(b) and JIS (Japanese Industrial Standard) C 0920 (2003). This standard stipulates a method for classifying the protection structure of electromechanical appliances by enclosures. By introducing the classification method of the protection structure, it aims to standardize the expression of the protected content (degree) and its verification method.

[0013] <Purpose of this standard> The definitions for the classification of the protection level by the enclosures of electrical equipment are shown in the following (1)-(2). (1) Protection of the human body against access to dangerous parts inside the enclosure. (2) Protection of the electrical equipment inside the enclosure against the intrusion of solid objects from the outside.

[0014] <IP standard IP4X> As a criterion for judging the effects of the present invention, the IP standard IP4X defined in IEC 60529 Amd.2 Ed.2.0 b Cor.1:2019(b) and JIS C 0920 (2003) is used. As the regulation of IP4X, it is stipulated that a test probe with a length of 100 mm and a diameter of 1 mm is pushed in with a pressing force of 1 N. The test probe is not inserted by being bent by the pressing force and stops at the abutment.

[0015] <First Embodiment> <Overall configuration of in-vehicle device 1> The first embodiment will be described with reference to FIGS. 1 to 5. FIG. 1 is an external perspective view showing the in-vehicle device 1 according to the first embodiment. FIG. 2 is a front view of the in-vehicle device 1 according to the first embodiment as viewed from the front direction F of the housing 3. FIG. 3 is an exploded perspective view showing the in-vehicle device 1 according to the first embodiment. FIG. 4 is a cross-sectional view of the in-vehicle device 1 according to the first embodiment shown in a cross-section along the line B-B in FIG. 5. FIG. 5 is a longitudinal sectional view of the in-vehicle device 1 according to the first embodiment shown in a longitudinal section along the line A-A in FIG. 4. The in-vehicle device 1 meets the IP4X defined in the IEC standard 60529.

[0016] As shown in FIGS. 1 to 5, the in-vehicle device 1 includes a housing 3, a connector attachment portion 2, and a substrate 12.

[0017] The housing 3 is a box. The housing 3 has a front surface 3F on which the connector mounting portion 2 is provided, an upper surface 3U, a lower surface 3D, a right surface 3R, a left surface 3L, and a rear surface 3B facing the front surface 3F. The housing 3 has an opening formed on the front surface 3F side. The housing 3 accommodates the board 12 therein and has the connector mounting portion 2 that defines the mounting positions of the connectors 4, 5, and 6.

[0018] The connector mounting portion 2 is a cover for the housing 3. The connector mounting portion 2 is provided on the front portion 3F of the housing 3. The connector mounting portion 2 is formed flush with the surface of the housing 3 in the front direction F. The connector mounting portion 2 covers an opening of the housing 3 in the front direction F. The connector mounting portion 2 has three openings 7, 8, and 9 formed therein.

[0019] The connector mounting portion 2 is attached by snap fitting to holes 31 provided on the inner wall sides of the upper surface 3U and lower surface 3D of the housing 3. Three snap fits are provided on the upper and lower sides at intervals on the right direction R side, the center side, and the left direction L side. The snap fits are composed of holes 31 provided on the inner wall sides of the upper surface 3U and lower surface 3D of the housing 3, and claw portions 21 provided on the connector mounting portion 2 and engaged with the holes 31. The claw portions 21 are combined and engaged with the holes 31 provided in the housing 3 from the inner wall sides of the upper surface 3U and lower surface 3D of the housing 3, and the connector mounting portion 2 is fixed to the housing 3.

[0020] The board 12 has a circuit for electrically connecting to an external device (not shown). The board 12 is equipped with connectors 4, 5, and 6 for electrically connecting to the external device. That is, a plurality of connectors 4, 5, and 6 are provided. Each of the connectors 4, 5, and 6 exposes a connection portion with the external device in the opening range of each of the openings 7, 8, and 9 of the connector mounting portion 2. The connectors 4, 5, and 6 electrically connect the external device and the board 12 by connecting terminals of the external device. The connectors 4, 5, and 6 are mounted on the board 12 with no gaps between them.

[0021] The substrate 12 is configured to be incorporated into the bag-shaped housing 3 by sliding it from an opening in the front direction F of the housing 3 toward the rear direction B. The substrate 12 is fitted and fixed in a groove 32 formed on the inner wall side of the rear part 3B of the housing 3.

[0022] The board 12 is supplied with the voltage and current of an in-vehicle battery, and is equipped with a power supply circuit section that distributes the voltage and current internally, as well as power supply related components 11 and electrical components 20 around the power supply circuit section. The power supply related components 11 are a hazardous location used for purposes (1)-(2) of the IP standard IP4X. The power supply related components 11 are disposed within a projection area in the rear direction B of the connector 6. The electrical components 20 other than the power supply related components 11 are not subject to the IP standard IP4X. The power supply circuit section is formed in the board 12.

[0023] <Gap 10> Between the connectors 4, 5, 6 and the connector attachment portion 2, there is formed a gap 10 through which foreign solid matter can enter from the outside of the housing 3. In other words, between each of the openings 7, 8, 9 for the connectors 4, 5, 6 and each of the connectors 4, 5, 6, there is provided a gap 10 of 1 mm or more.

[0024] The gap 10 takes into consideration manufacturing variations in the board 12, variations in the shapes of the connectors 4, 5, and 6, variations in the positions of the connectors 4, 5, and 6 when they are mounted, positional variations when the board 12 is inserted into the housing 3 and assembled, manufacturing variations in the connector mounting portion 2, and positional variations when the housing 3 and the connector mounting portion 2 are assembled, and takes into consideration the fact that these are assembled using equipment.

[0025] For this reason, it is very difficult to make the gap 10 less than 1 mm. If the gap 10 were to be made less than 1 mm, this would lead to increased costs, such as labor costs for manually assembling the in-vehicle device 1 and costs for dimensional control.

[0026] In addition, since the shapes of the mating surfaces of the connectors 4, 5, 6 employed in the openings 7, 8, 9 for the connectors 4, 5, 6 are not necessarily square or rectangular, a gap 10 is secured from the outermost periphery of the mating surfaces of the connectors 4, 5, 6, and the shapes of the openings 7, 8, 9 for the connectors 4, 5, 6 are made simple square or rectangular. This makes it possible to reuse the shape of the connector mounting portion 2 if only a slight change is made to the connectors 4, 5, 6.

[0027] For the above reasons, a gap 10 is formed between each of the multiple connectors 4, 5, 6 and the connector mounting portion 2 arranged around each of the multiple connectors 4, 5, 6, into which a test probe 14 having a diameter of 1 mm and a length of 100 mm can be pressed with a pressing force of 1 N.

[0028] Specifically, the IP standard IP4X defined in IEC60529 and JIS C 920 is used as the standard between each of the three connectors 4, 5, 6 and the connector mounting portions 2 surrounding each of the three connectors 4, 5, 6, and as stipulated by IP4X, a gap 10 of width 1.5 mm is formed into which a test probe 14 of diameter 1 mm and length 100 mm can be pressed with a pressing force of 1 N.

[0029] <6 walls 15, 16, 17> The housing 3 has six walls 15, 16, 17 inside the housing 3 that protrude toward the board 12 and extend along the mounting direction of the connectors 4, 5, 6. Here, the mounting direction of the connectors 4, 5, 6 is the direction in which terminals of an external device (not shown) are inserted into the connectors 4, 5, 6, i.e., the direction from the front part 3F toward the rear part 3B (rear direction B). The six walls 15, 16, 17 are disposed at positions overlapping with the connectors 4, 5, 6 when viewed from the mounting direction of the connectors 4, 5, 6. The height of the six walls 15, 16, 17 is such that they do not come into contact with the board 12.

[0030] <First Wall 17 and Second Wall 16> The housing 3 includes, as part of six walls 15, 16, 17, a first wall 17 and a second wall 16 disposed opposite to each other so as to sandwich the power supply-related component 11 therebetween.

[0031] The first wall portion 17 is disposed at a position overlapping with the connector 6 when viewed from the mounting direction of the connector 6 out of the connectors 4, 5, and 6. The first wall portion 17 is disposed closer to the center of the housing 3 than the second wall portion 16.

[0032] The second wall portion 16 is disposed at a position overlapping the connector 6 when viewed from the mounting direction of the connector 6.

[0033] Specifically, the first wall 17 and the second wall 16 are configured to prevent the test probe 14 from contacting the power supply-related components 11 on the board 12 due to the intrusion of foreign solid objects from the left and right gaps between the connector mounting portion 2 and the connectors 5 and 6. The first wall 17 and the second wall 16 extend from the rear portion 3B to the front direction F inside the housing 3. That is, the first wall 17 and the second wall 16 protrude from the inner wall side of the upper portion 3U in the downward direction D toward the board 12. The power supply-related components 11, which are dangerous areas in the board 12, are arranged in the area sandwiched between the first wall 17 and the second wall 16. The power supply-related components 11 are a battery supply section, a power supply circuit section in the board 12, an actuator output circuit, and the like, and are also called live parts.

[0034] <Gaps 13 between the six wall portions 15, 16, 17 and the substrate 12> Vertical gaps 13 are provided between the six walls 15, 16, 17 and the substrate 12. It is desirable that no components are placed between the six walls 15, 16, 17 and the substrate 12, and that the spacing of the vertical gaps 13 is less than 1 mm. It is desirable that the spacing of the vertical gaps 13 is constant. Electrical components 20 mounted on the substrate 12 other than the power supply related components 11 are referred to as non-live electrical components.

[0035] <Integral formation of six walls 15, 16, 17 and the housing 3> The six wall portions 15, 16, and 17 are integrally formed with the housing 3. The six wall portions 15, 16, and 17 are provided so as to extend from the back surface portion 3B toward the front direction F. That is, by arranging the six wall portions 15, 16, and 17 in parallel with the outer wall of the housing 3, the die cutting of the housing 3 becomes easy, and it becomes possible to integrally mold the housing 3 and the six wall portions 15, 16, and 17.

[0036] On the other hand, when a wall portion is provided in a direction intersecting the opening of the housing 3 in the front direction F from the back surface portion 3B, the number of parts and the assembly process will increase. However, at least one of the wall portions 15, 16, and 17 may be a member separate from the housing 3.

[0037] <Relationship with the test probe 14 for IP4X: Left and right gaps> FIG. 6 is a cross-sectional view showing a case where the test probe 14 according to the first embodiment is inserted into the gap 10 between the connectors 4, 5, and 6 and the connector attachment portion 2 from the left and right directions.

[0038] The intrusion range 18 of the test probe 14 can be calculated from the width of the gap 10 between the connectors 4, 5, and 6 and the connector attachment portion 2. Therefore, depending on the calculation result of the intrusion range 18 of the test probe 14 and the position of the power supply related component 11, it is also possible to shorten the length of the first wall portion 17 or the second wall portion 16. As can be seen from FIG. 6, even when there is no intrusion angle of the test probe 14, a certain length of the first wall portion 17 and the second wall portion 16 is required.

[0039] <Position of the tip portion 17a of the first wall portion 17> A test probe 14 having a diameter of 1 mm and a length of 100 mm is pushed with a pressing force of 1 N through a gap 10 between the connector 5 and the connector mounting portion 2 arranged around the connector 5 on the connector 6 side, and the test probe 14 comes into contact with a corner C1 on the front portion 3F side of the connector 5 and also comes into contact with a corner C2 on the rear portion 3B side of the connector mounting portion 2. This state is defined as a first maximum movable state A1 of the test probe 14 toward the power supply related component 11. The first wall portion 17 extends from the rear portion 3B toward the front portion 3F side until the tip of the test probe 14 abuts against the first wall portion 17 in the first maximum movable state A1.

[0040] With respect to the penetration range 18 of the above-mentioned test probe 14, the first wall portion 17 uses the IP standard IP4X from the gap 10 between the connector 6 and the connector mounting portion 2 arranged around the left and right sides of the connector 6, or from the gap 10 between the connector 5 and the connector mounting portion 2 arranged around the connector 5 on the connector 6 side, and is positioned so that when a test probe 14 with a diameter of 1 mm and a length of 100 mm is pressed in with a pressing force of 1 N as stipulated by IP4X, the tip of the test probe 14 abuts against the area of ​​the first wall portion 17 on the front side 3F of the housing 3.

[0041] In other words, the first wall portion 17 extends toward the front portion 3F from the back portion 3B of the housing 3 facing the front portion 3F as a starting point so as to intersect with the boundary line that defines the maximum movable area of ​​foreign solid objects that may enter through the gap 10 between the connector 6 and the connector mounting portion 2.

[0042] <Position of tip 16a of second wall portion 16> From the gap 10 between the connector 6 and the connector mounting portion 2 disposed around the left and right of the connector 6 and provided on the side opposite to the connector 5, a test probe 14 having a diameter of 1 mm and a length of 100 mm is pushed in with a pressing force of 1 N, and the test probe 14 contacts the corner portion C3 on the front portion 3F side in the connector mounting portion 2 disposed around the connector 6, and the test probe 14 contacts the corner portion C4 on the back portion 3B side in the connector 6. The state is defined as the second maximum movable state A2 toward the power supply related component 11 side of the test probe 14. The second wall portion 16 extends from the back portion 3B toward the front portion 3F side to a position where the tip of the test probe 14 abuts against the second wall portion 16 in the second maximum movable state A2.

[0043] <Relationship with the test probe 14 for IP4X: Vertical gap 10> FIG. 7 is a longitudinal sectional view showing a case where the test probe 14 according to the first embodiment is inserted into the gap 10 between the connector 6 and the connector mounting portion 2 from the vertical direction in a longitudinal section along the line C-C of FIG. 6.

[0044] Regarding the intrusion of the test probe 14 from the upper direction U of the connector 6 into the gap 10, the intrusion range 19 is formed. In this case, the test probe 14 does not contact the power supply related component 11. Regarding the intrusion of the test probe 14 from the lower direction D of the connector 6 into the gap 10, it abuts against the substrate 12. Therefore, the test probe 14 cannot enter the inside of the housing 3.

[0045] <Intrusion of the test probe 14 into the upper direction U gap 10 of the connector 6> Between the connector 6 and the connector mounting portion 2 disposed in the upper direction U of the connector 6, a gap 10 that uses the IP standard IP4X and allows a test probe 14 having a diameter of 1 mm and a length of 100 mm to be pushed in with a pressing force of 1 N is formed according to the provisions of IP4X.

[0046] In this case, when the test probe 14 is inserted into the gap 10 between the connector 6 and the connector attachment portion 2 arranged in the upward direction U of the connector 6, the tip of the test probe 14 comes into contact with a corner C5 on the front portion 3F side of the connector attachment portion 2 arranged in the upward direction U of the connector 6, and also comes into contact with a corner C6 on the rear portion 3B side of the connector 6, resulting in a third maximum movable state A3 of the test probe 14 toward the power supply related component 11. In the third maximum movable state A3, the test probe 14 only moves in the upward direction U beyond the height of the power supply related component 11, and the test probe 14 does not come into contact with the power supply related component 11.

[0047] <Insertion of the test probe 14 into the gap 10 in the downward direction D of the connector 6> Between the connector 6 and the connector attachment portion 2 arranged below the connector 6, a gap 10 is formed into which a test probe 14 having a diameter of 1 mm and a length of 100 mm can be pushed in with a pushing force of 1 N.

[0048] In this case, when the test probe 14 is pushed in through the gap 10 between the connector 6 and the connector mounting portion 2 arranged downward D of the connector 6, the tip of the test probe 14 abuts against the end of the board 12 on the connector mounting portion 2 side.

[0049] <Insertion of the test probe 14 into the vertical gap 13 between the first wall 17 and the second wall 16 and the substrate 12> Between the first wall 17 and the second wall 16 and the substrate 12, an IP standard IP4X is used, and as stipulated by the IP4X, when a test probe 14 with a diameter of 1 mm and a length of 100 mm is pressed in with a pressing force of 1 N, the tip of the test probe 14 abuts against the first wall 17 and the second wall 16, forming a gap 13 that does not penetrate through. As described above, the vertical width of this gap 13 is less than 1 mm.

[0050] <Second embodiment> Fig. 8 is a cross-sectional view showing an in-vehicle device 1 according to a second embodiment. As shown in Fig. 8, the power supply-related component 11 is not within a projection area of ​​the connector 6 in the rear direction B. The power supply-related component 11 is disposed between a left side portion 3L of the housing 3 formed adjacently in the left direction L from within the area of ​​the connector 6 in the rear direction B and a first wall portion 17. For this reason, there is no second wall portion 16, and the first wall portion 17 sandwiches the power supply-related component 11 between the inner wall side of the left side portion 3L of the housing 3.

[0051] Depending on the functional requirements for the in-vehicle device 1, the number of connectors in the first embodiment may remain the same, but the circuit scale may become larger, requiring a larger board area for mounting the components. In this case, it is possible to enlarge the housing 3. The power-related components 11 are arranged in a location where they can be protected, regardless of the direction in which the gap 10 between the connector 6 and the connector mounting portion 2 extends. Therefore, by providing one first wall portion 17, it is possible to prevent the test probe 14 from approaching the power-related components 11.

[0052] <Third embodiment> Fig. 9 is a cross-sectional view showing an in-vehicle device 1 according to a third embodiment. As shown in Fig. 9, the tip 17a of the first wall 17 and the tip 16a of the second wall 16 are formed in a tapered shape. The length of the first wall 17 from the rear part 3B of the housing 3 to the tip 17a in the front direction F is adapted to the configuration of the first embodiment. The length of the second wall 16 from the rear part 3B of the housing 3 to the tip 16a in the front direction F is adapted to the configuration of the first embodiment.

[0053] When the penetration angle of the test probe 14 is shallow, the tip portions 17a, 16a of the first wall portion 17 and the second wall portion 16 facing the connector 6 are formed into a tapered shape. The tapered shape of the tip portions 17a, 16a of the first wall portion 17 and the second wall portion 16 has a taper angle that extends the power supply related component 11 side in the front direction F and shortens the side opposite the power supply related component 11 side in the rear direction B. This has the effect of preventing the penetration of the test probe 14 more effectively by allowing the test probe 14 to slide due to the taper angle of the tip portions 17a, 16a of the first wall portion 17 and the second wall portion 16 and flow toward the side opposite the power supply related component 11 side and the rear direction B.

[0054] <Fourth embodiment> Fig. 10 is a cross-sectional view showing an in-vehicle device 1 according to a fourth embodiment. As shown in Fig. 10, at least one of the first wall portion 17 and the second wall portion 16, the first wall portion 17, is disposed so as to cover the gap 10 between the connector 6 and the connector attachment portion 2. The first wall portion 17 is disposed between the connector 5 and the connector 6 of the connectors 4, 5, and 6.

[0055] As the first wall portion 17, a tall component such as an electrolytic capacitor is arranged in the extension direction of the back direction B of the gap 10. In this case as well, there is an effect of preventing the intrusion of the test probe 14. Here, care must be taken to arrange the electrolytic capacitor or the like as the first wall portion 17 so that the GND terminal or a surface without a terminal of the electronic component faces the gap 10 side and does not face outward.

[0056] <Effects> (A) An in-vehicle device 1 is supplied with voltage and current from an in-vehicle battery and includes a board 12 on which a power supply circuit section that distributes the voltage and current internally and power-related components 11 around the power supply circuit section are mounted. The in-vehicle device 1 is mounted on the board 12 and includes connectors 4, 5, and 6 that electrically connect an external device to the board 12. The in-vehicle device 1 includes a housing 3 that accommodates the board 12 therein and has a connector mounting section 2 that defines the mounting positions of the connectors 4, 5, and 6. The housing 3 has at least one wall section 17, 16 inside the housing 3 that protrudes toward the board 12 and extends along the mounting direction of the connector 6 (see FIG. 4).

[0057] Between the connectors 4, 5, 6 and the connector mounting portion 2, gaps 10 are formed to absorb the tolerances of the board 12, the connectors 4, 5, 6, the housing 3, and the connector mounting portion 2. This allows the in-vehicle device 1 to be easily assembled at the facility. Also, by forming the openings 7, 8, 9 of the connector mounting portion 2 so that gaps 10 are formed between the connectors 4, 5, 6 and the connector mounting portion 2, the freedom of selection of the connectors 4, 5, 6 can be improved.

[0058] The gap 10 between the connectors 4, 5, 6 and the connector mounting portion 2 allows the intrusion of foreign solid objects. Therefore, in the above embodiment, as described above, the wall portions 17, 16 extending along the mounting direction of the connectors 4, 5, 6 are provided in the housing 3. Therefore, the wall portions 17, 16 prevent foreign solid objects from approaching the power supply related components 11. The vehicle-mounted device 1 according to the above embodiment satisfies the IP standard IP4X, and by preventing foreign solid objects from approaching the power supply related components 11, protection of the human body via foreign solid objects and electrical protection of the power supply related components 11 are appropriately performed. In addition, the wall portions 17, 16 for preventing the intrusion of foreign solid objects have a simple structure extending along the mounting direction of the connector 6 in the housing 3, and do not adversely affect the assembly of the connector 6 and the connector mounting portion 2.

[0059] Therefore, according to the above embodiment, it is possible to prevent foreign solid matter from approaching the power supply related components 11, and it is also possible to provide an in-vehicle device 1 that is easy to install.

[0060] (B) At least one of the walls 17, 16 is disposed at a position overlapping the connector 6 when viewed from the mounting direction of the connector 6 (see FIG. 4).

[0061] In this configuration, it is possible to prevent foreign solid objects from approaching the power supply related components 11 provided in the rear direction B of the connector 6.

[0062] (C) At least one of the walls 17, 16 includes a first wall 17 and a second wall 16 arranged opposite to each other so as to sandwich the power supply-related component 11 therebetween (see FIG. 4).

[0063] In this configuration, the first wall portion 17 and the second wall portion 16 face each other so as to sandwich the power supply related component 11 therebetween, making it possible to prevent foreign solid objects from approaching.

[0064] (D) Between the connectors 4, 5, 6 and the connector attachment portion 2, there is formed a gap 10 through which foreign solid matter can enter from the outside of the housing 3 (see FIG. 2).

[0065] In this configuration, the gap 10 between the connectors 4, 5, 6 and the connector mounting portion 2 allows foreign solid objects to enter. However, at least one of the walls 17, 16 is inside the housing 3 and protrudes toward the board 12, extending along the mounting direction of the connector 6. This prevents foreign solid objects from approaching the power supply related components 11. Preventing foreign solid objects from approaching the power supply related components 11 in this way ensures protection of the human body via foreign solid objects and electrical protection of the power supply related components, and satisfies the IP standard IP4X.

[0066] (E) At least one of the first wall portion 17 and the second wall portion 16, the first wall portion 17, is disposed so as to cover the gap 10 between the connectors 5, 6 and the connector attachment portion 2 (see FIG. 10).

[0067] In this configuration, the first wall portion 17 covers the gap 10 between the connectors 5, 6 and the connector mounting portion 2. Therefore, foreign solid objects cannot approach the power supply related components 11.

[0068] (F) The in-vehicle device 1 meets the IP4X standard defined in IEC standard 60529.

[0069] In this configuration, the power supply-related components 11 are prevented from being approached by foreign solid objects, while the IP standard IP4X can be complied with as a standard.

[0070] (G) First wall portion 17 is disposed between connector 6 and connector 5 of connectors 4, 5, and 6. Connector attachment portion 2 is provided on front portion 3F of housing 3. First wall portion 17 starts from rear portion 3B of housing 3 facing front portion 3F and extends toward front portion 3F so as to intersect with a boundary line that defines the maximum movable area of ​​a foreign solid object that enters through gap 10 between connector 6 and connector attachment portion 2 (see FIG. 6).

[0071] In this configuration, the first wall 17 is provided to a necessary length while complying with the IP standard IP4X as a standard. This allows for greater freedom in the layout of components on the board 12 inside the housing 3.

[0072] (H) At least one of the walls 17, 16 has a height that does not contact the substrate 12 (see FIG. 5).

[0073] In this configuration, at least one of the walls 17, 16 does not come into contact with the board 12, so that there is no adverse effect of damaging components on the board 12 during assembly.

[0074] (I) The first wall portion 17 is disposed closer to the center of the housing 3 than the second wall portion 16 (see FIG. 4).

[0075] In this configuration, the first wall 17 extends from the rear part 3B of the housing 3 to the front part 3F of the housing 3 from the gap 10 between the connector 5 and the connector attachment part 2 arranged around the connector 5 on the connector 6 side to a position where the tip of the test probe 14 in the maximum movable state abuts against the first wall 17. Therefore, the IP standard IP4X can be complied with as a standard while preventing foreign solid objects from approaching the power supply related parts 11.

[0076] (J) At least one of the walls 17, 16 is integrally formed with the housing 3 (see FIG. 3).

[0077] In this configuration, the housing 3 including at least one of the walls 17 and 16 is easy to manufacture. This makes it easy to demold the housing 3, and the housing 3 can be formed by integral molding. This also reduces the number of parts and assembly steps.

[0078] (K) At least one of the walls 17, 16 is a separate member from the housing 3.

[0079] In this configuration, at least one of the walls 17, 16 and the housing 3 can be manufactured using different materials in different manufacturing steps.

[0080] (L) The housing 3 has a front part 3F on which the connector mounting part 2 is provided, and a back part 3B facing the front part 3F. The first wall part 17 is arranged at a position overlapping the connector 6 among the connectors 4, 5, and 6 when viewed from the mounting direction of the connectors 4, 5, and 6. A test probe 14 having a diameter of 1 mm and a length of 100 mm is pushed with a pressing force of 1 N from a gap 10 between the connector 5 and the connector mounting part 2 arranged around the connector 5 on the connector 6 side, and the test probe 14 contacts a corner C1 on the front part 3F side of the connector 5 and a corner C2 on the back part 3B side of the connector mounting part 2. This state is defined as a first maximum movable state A1 of the test probe 14 toward the power supply related component 11 side. In the first maximum movable state A1, the first wall part 17 extends from the back part 3B to the front part 3F side until the tip of the test probe 14 hits the first wall part 17 (see FIG. 6).

[0081] In order to accommodate the tolerances of the board 12, connectors 4, 5, 6, housing 3, and connector mounting portion 2, the vehicle-mounted device 1 has predetermined gaps 10 formed between the connectors 4, 5, 6 and the connector mounting portion 2. The gaps 10 between the connectors 4, 5, 6 and the connector mounting portion 2 allow the connector opening shape of the connector mounting portion 2 to be reused so that the connectors 4, 5, 6 have some leeway in selection.

[0082] At this time, the gap 10 between the connectors 4, 5, 6 and the connector attachment portion 2 allows foreign solid objects to enter. Here, in this configuration, the housing 3 has a first wall portion 17 and a second wall portion 16 that are arranged opposite each other inside the housing 3 and sandwich the power supply related component 11. For this reason, foreign solid objects cannot approach the power supply related component 11. And, preventing foreign solid objects from approaching the power supply related component 11 in this way ensures protection of the human body via foreign solid objects and electrical protection of the power supply related components, and satisfies the IP standard IP4X.

[0083] Therefore, the power supply-related components 11 are prevented from being approached by foreign solid objects, while the IP standard IP4X is complied with as a standard.

[0084] In addition, in this configuration, the first wall 17 is provided with a necessary length while complying with the IP standard IP4X as a standard. This allows for greater freedom in the layout of components on the board 12 inside the housing 3.

[0085] (M) A plurality of connectors 4, 5, 6 are provided. Between each of the plurality of connectors 4, 5, 6 and the connector mounting portion 2 arranged around each of the plurality of connectors 4, 5, 6, a gap 10 is formed into which a test probe 14 having a diameter of 1 mm and a length of 100 mm can be pushed with a pushing force of 1 N (see FIG. 2).

[0086] In this configuration, the gap 10 between the connectors 4, 5, 6 and the connector attachment portion 2 allows foreign solid objects to enter. However, the housing 3 has a first wall portion 17 and a second wall portion 16 that are disposed opposite each other inside the housing 3 and sandwich the power supply related component 11. For this reason, foreign solid objects cannot approach the power supply related component 11. Preventing foreign solid objects from approaching the power supply related component 11 in this way ensures protection of the human body via foreign solid objects and electrical protection of the power supply related components, and satisfies the IP standard IP4X.

[0087] (N) Between the connector 6 and the connector mounting portion 2 arranged in the downward direction D of the connector 6, there is formed a gap 10 into which a test probe 14 having a diameter of 1 mm and a length of 100 mm can be pushed with a pressing force of 1 N. The connector 6 is mounted on the board 12 with no gap between the board 12 and the connector. When the test probe 14 is pushed in through the gap 10 between the connector 6 and the connector mounting portion 2 arranged in the downward direction D of the connector 6, the tip of the test probe 14 abuts against the end of the board 12 on the connector mounting portion 2 side (see FIG. 7).

[0088] In this configuration, the power supply-related components 11 are prevented from being approached by foreign solid objects, while the IP standard IP4X can be complied with as a standard.

[0089] (O) A test probe having a diameter of 1 mm and a length of 100 mm is pushed with a pressing force of 1 N through a gap 10 between the connector 6 and the connector mounting portion 2 arranged around the left and right sides of the connector 6 and provided on the opposite side to the connector 5, and the test probe 14 comes into contact with a corner C3 on the front portion 3F side of the connector mounting portion 2 arranged around the connector 6, and also comes into contact with a corner C4 on the rear portion 3B side of the connector 6. This state is defined as a second maximum movable state A2 of the test probe 14 toward the power supply related component 11. In the second maximum movable state A2, the second wall portion 16 extends from the rear portion 3B toward the front portion 3F side until the tip of the test probe 14 abuts against the second wall portion 16 (see FIG. 6).

[0090] In this configuration, the second wall 16 is provided to a necessary length while complying with the IP standard IP4X as a standard. This allows for greater freedom in the layout of components on the board 12 inside the housing 3.

[0091] (P) First wall 17 is provided between connector 6, which is one of connectors 4, 5, and 6, and is arranged at a position overlapping first wall 17 when viewed from the mounting direction of connector 6, and connector 5 adjacent to connector 6. First wall 17 is provided at a position where, using IP standard IP4X, when test probe 14 with a diameter of 1 mm and a length of 100 mm is pressed in with a pressing force of 1 N as stipulated by IP4X, the tip of test probe 14 abuts against an area of ​​first wall 17 on the front surface 3F side of housing 3 from gap 10 between connector 6 and connector mounting portion 2 arranged around left and right sides of connector 6, or between connector 5 and connector mounting portion 2 arranged around connector 5 on the connector 6 side (see FIG. 10).

[0092] In this configuration, the IP standard IP4X is complied with as a standard, and the first wall portion 17 is provided only in a necessary portion. This allows for greater freedom in the layout of components on the board 12 inside the housing 3.

[0093] Although the embodiments of the present invention have been described above, the above-mentioned embodiments merely show some of the application examples of the present invention, and it is not intended that the technical scope of the present invention be limited to the specific configurations of the above-mentioned embodiments. [Explanation of symbols]

[0094] 1...vehicle-mounted device, 2...connector mounting portion, 3...housing, 3B...rear portion, 3D...bottom portion, 3F...front portion, 3L...left portion, 3R...right portion, 3U...top portion, 4...connector, 5...connector, 6...connector, 7...opening, 8...opening, 9...opening, 10...gap, 11...power supply-related part, 12...circuit board, 13...gap, 14...test probe, 15...wall portion, 16...second wall portion, 16a...tip portion, 17...first wall portion, 17a...tip portion, 18...intrusion range, 19...intrusion range, 20...electrical part, 21...claw portion, 31...hole, 32...groove.

Claims

1. a substrate on which a power supply circuit unit that receives a voltage and a current from an in-vehicle battery and distributes the voltage and the current therein and on which power supply-related components around the power supply circuit unit are mounted; a connector mounted on the board and electrically connecting an external device to the board; a housing that accommodates the board therein and has a connector mounting portion that defines a mounting position of the connector; Equipped with the housing has a first wall portion and a second wall portion that are inside the housing, protrude toward the board, extend along a mounting direction of the connector, and are disposed opposite to each other so as to sandwich the power supply-related component therebetween; the housing has a front portion on which the connector attachment portion is provided and a rear portion opposed to the front portion, the first wall portion is disposed at a position overlapping a first connector of the connectors when viewed from a mounting direction of the connectors, When a test probe having a diameter of 1 mm and a length of 100 mm is pushed with a pressing force of 1 N through a gap between a second connector adjacent to the first connector and the connector mounting portion arranged around the second connector on the first connector side, and the test probe comes into contact with a corner on the front side of the second connector and also comes into contact with a corner on the rear side of the connector mounting portion, the state is defined as a first maximum movable state of the test probe toward the power supply related component, The first wall portion extends from the rear portion toward the front portion to a position where the tip portion of the test probe abuts against the first wall portion in the first maximum movable state. In-vehicle device.

2. The in-vehicle device according to claim 1 , The in-vehicle device meets the IP4X standard defined in IEC 60529. In-vehicle device.

3. The in-vehicle device according to claim 1 , The height of the first wall portion and the second wall portion is such that they do not come into contact with the substrate. In-vehicle device.

4. The in-vehicle device according to claim 1 , The first wall portion is disposed closer to the center of the housing than the second wall portion. In-vehicle device.

5. The in-vehicle device according to claim 1 , The first wall portion and the second wall portion are integrally formed with the housing. In-vehicle device.

6. The in-vehicle device according to claim 1 , The first wall portion and the second wall portion are separate members from the housing. In-vehicle device.

7. The in-vehicle device according to claim 1 , The connector is provided in plurality, Between each of the plurality of connectors and the connector mounting portion disposed around each of the plurality of connectors, a gap is formed into which the test probe can be pushed with a pushing force of 1 N. In-vehicle device.

8. The in-vehicle device according to claim 1 , a gap is formed between the first connector and the connector attachment portion disposed below the first connector, into which the test probe can be pushed with a pushing force of 1 N; The connector is mounted on the board with no gap between the board and the connector, When the test probe is pushed into the gap between the first connector and the connector mounting portion disposed below the first connector, the tip of the test probe abuts against an end of the board on the connector mounting portion side. In-vehicle device.

9. The in-vehicle device according to claim 1 , When the state in which the test probe is pushed with a pressing force of 1N through a gap between the first connector and the connector mounting portion arranged around the left and right sides of the first connector and provided on the opposite side to the second connector, and the test probe comes into contact with a corner on the front side of the connector mounting portion arranged around the first connector and also comes into contact with a corner on the rear side of the first connector, is defined as a second maximum movable state of the test probe toward the power supply related component, The second wall portion extends from the rear portion toward the front portion to a position where the tip portion of the test probe abuts against the second wall portion in the second maximum movable state. In-vehicle device.

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