JP4866830B2 - Automotive electronics - Google Patents

Description

  The present invention relates to an automobile electronic device, and more particularly, to an automobile electronic device suitable for use in controlling an internal combustion engine of an automobile.

  2. Description of the Related Art Conventionally, an automobile electronic device has a configuration in which a board on which electronic components are mounted is housed in a housing and is electrically connected to the outside by a connector fixed to the housing. Here, it is common to take a waterproof structure from the viewpoint of the waterproofness of the electronic component. The waterproof structure is generally one in which a liquid waterproof adhesive is applied to the gap between the outer periphery of the connector and the inner periphery of the housing and cured.

  The automobile electronic device is fixed to the engine or the vehicle body by bolts. In order to connect the automobile electronic device to an external sensor or actuator, a female connector attached to an end of a cable connected to the sensor or actuator is connected to a male connector of the automobile electronic device. Here, when the female connector is attached to the male connector, an external force such as a large twist is applied. Due to this external force, a load to be peeled off is applied to the adhesion part of the waterproof structure, and a phenomenon of impairing the waterproof property occurs.

  Therefore, a protrusion is provided on the housing side of this adhesion part (seal part), and when an external force is applied, the tip of this protrusion contacts the connector and acts as a stopper, preventing a large deformation of the case, There is known a structure in which a large stress is not applied to (see, for example, paragraph number <0029> of Patent Document 1).

JP 2006-1000025 A

  However, in the thing of patent document 1, as FIG.4 and FIG.5 shows, the processus | protrusion for stress relaxation is provided in the adhesion | attachment site | part (sealing site | part). The tip of the protrusion is in contact with the surface of the connector, and the tip of the protrusion and the connector are not bonded by an adhesive, or even if bonded, the bonding area is very small. Therefore, when a large stress is applied to the seal portion, the relative position of the housing and the connector changes with the tip of the protrusion as a fulcrum, but at this time, interface peeling occurs between the tip of the protrusion and the connector, and the repeated stress is applied. By adding, the area of a peeling part increases gradually and there exists a possibility that the waterproofness in a seal part may fall.

  Here, various electronic devices for automobiles include an engine control unit that controls an internal combustion engine, a motor control unit that controls a motor of an electric vehicle or a hybrid vehicle, a transmission control unit that controls a transmission, and the like. . Among these, the engine control unit for controlling the internal combustion engine has more input signals from the sensors and more output signals to the actuator than other near-toll units, and the number of input / output signal lines is 120 or more. is there. In other control units, it is about 50-80. As the number of input / output signal lines increases, the number of pins of the connector also increases, and as a result, the width of the connector and the width of the housing at the position where the connector is fixed are increased. For this reason, since the amount of deformation of the housing is large when an external force is applied when the male and female connectors are connected, waterproofing is particularly likely to be reduced.

  An object of the present invention is to provide an automotive electronic device with improved waterproofness.

(1) In order to achieve the above object, the present invention provides a case, a substrate fixed to the inside of the case, a cover fixed to the case and constituting a housing, and wiring formed on the substrate A lead terminal connected to the housing, and a connector positioned in the opening of the housing, between the outer peripheral portion of the connector and the inner peripheral portion of the case, and the outer peripheral portion of the connector and the cover An electronic device for automobile in which an adhesive is bonded to an inner periphery of the connector, and is provided in the case at a position different from the adhesive by the adhesive, and the outer periphery of the connector from the inner periphery of the case Bei example a projection which projects toward the part, the protrusion, a concave portion is formed in the center protrudes in a rectangular shape or circular, inside the recess, as the adhesive has to be filled It is.
With this configuration, the waterproof property of the automobile electronic device can be improved.

  (2) In the above (1), preferably, the protrusion is provided at a position closer to the inside of the electronic device than a position of the adhesive portion by the adhesive.

  (3) In the above (1), preferably, the tip of the protruding portion and the outer peripheral portion of the connector are bonded and fixed with a second adhesive.

  (4) In the above (3), preferably, a gap is provided between the tip of the protruding portion and the outer peripheral portion of the connector.

  (5) In the above (3), preferably, the second adhesive receiving surface provided in the connector is provided in the vicinity of the application portion of the second adhesive. .

( 6 ) In the above ( 1 ), preferably, a projection is formed on the connector and protrudes at the position of the recess of the projection.

( 7 ) In the above ( 6 ), preferably, a first gap is provided between the tip of the protruding portion and the outer peripheral portion of the connector, and the side surface of the protruding portion of the connector and the side surface of the protruding portion of the case A second gap is provided between the first gap and the first gap. The second gap is smaller than the second gap.

( 8 ) In the above (1), preferably, the adhesive is provided on the cover at a position different from the adhesive portion by the adhesive, and includes a protrusion protruding from the inner peripheral side of the cover toward the outer peripheral portion of the connector It is what I did.

  ADVANTAGE OF THE INVENTION According to this invention, the waterproofness in the electronic device for motor vehicles can be improved.

Hereinafter, the configuration of the automobile electronic device according to the reference example will be described with reference to FIGS.
First, the overall configuration of the automotive electronic device according to the reference example will be described with reference to FIGS. 1 and 2.
FIG. 1 is a cross-sectional view illustrating a configuration of an automotive electronic device according to a reference example . 2 is a cross-sectional view taken along line AA ′ of FIG.

  In FIG. 1, wiring is formed in a pattern on the surface of a substrate 1. An electronic component 11 is soldered to the wiring of the substrate 1. Examples of the electronic component 11 include a microprocessor for electrically controlling an actuator and the like, a memory such as a ROM and a RAM, an interface IC for input and output, and an electrical component such as a resistor, a capacitor, and a coil.

  The connector 2 includes a plurality of lead terminals 26. The lead terminal 26 is made of an aluminum wire having a diameter of about 1 mm bent into an L shape. The lead terminal 26 is held on the resin connector 2 by insert molding. A recess is formed in the left side of the connector 2 in the figure. One end of the lead terminal 26 protrudes into the recess to form a male connector. In the case of an engine control unit for controlling an internal combustion engine, the number of lead terminals 26 is 120 or more. The other end of the lead terminal 26 is connected to the wiring of the substrate 1 by solder 4. The electronic component 11 on the substrate 1 can be connected to the outside via the connector 2.

  The substrate 1 is fixed to the case 3 with screws 5A and 5B. The case 3 is made of aluminum die-casting with a plurality of heat radiation fins 32 integrally formed on the outside thereof. The substrate 1 has a rectangular shape, and its four corners are fixed with four screws. Accordingly, in the illustrated example, only the screws 5A and 5B are illustrated, but the screws are used in two further locations in the depth direction of the drawing.

  Inside the case 3, a modularized electronic component 12 is fixed by screws 5C and 5D. When a large capacitor or coil is mounted on the upper portion of the substrate 1, the electronic device becomes large. Therefore, the modularized electronic component 12 is one in which a plurality of large capacitors and coils are packaged with resin to facilitate handling. A plurality of terminals 21 for connection to the wiring of the substrate 1 are provided on the upper surface of the electronic component 12 (the surface opposite to the surface connected to the case 3; the surface positioned on the lower side in the illustrated state). . On the other hand, the substrate 1 has a hole through which the terminal of the electronic component 12 can pass. After the electronic component 12 is fixed to the case 3 with the screws 5C and 5D, the board 1 in which the lead terminals 26 of the connector 2 are soldered to the wiring of the board 1 is disposed in the case 3 in advance. By inserting the 12 terminals into the through holes of the substrate 1, the positional accuracy of the substrate 1 is ensured. Thereafter, the substrate 1 is fixed to the case 3 with screws 5A and 5B. Further, the terminals of the electronic component 12 are soldered to the wiring of the substrate 1.

  After the substrate 1 is assembled in the case 3, the cover 6 is fixed to the case 3 with screws 5E so as to cover the substrate 1. The cover 6 is obtained by bending a stainless steel plate. The case 3 and the cover 6 form a housing in which the mounting portion of the connector 2 is opened.

  A bolt hole (not shown) used when the electronic device main body is fixed to the engine or the vehicle body is provided on the outer periphery of the case 3. Using these holes, the electronic device main body including the case 3 is fixed to the engine and the vehicle body.

  A gap is formed between the outer peripheral portion of the connector 2 and the inner surface facing the outer peripheral portion of the connector of the case 3. Further, a gap is formed between the outer periphery of the connector 3 and the inner surface of the cover 6 facing the outer periphery of the connector. Among these gaps, the gap at the end of the case 3 and the gap at the end of the cover 6 are bonded by a waterproof adhesive 7A. The waterproof adhesive 7A is used to ensure waterproofness, dustproofness, and rustproofing ability of the internal space (internal space of the electronic device) formed by the case 3 and the cover 6 in which the electronic component 11 is disposed. The waterproof adhesive 7A is a silicon-based room temperature curable or thermosetting resin, and is also a resin having elasticity even after being cured. By having elasticity, some external force is applied to the connector 2, and the height of the gap between the outer peripheral portion of the connector 2 and the inner surface of the case 3 facing the outer peripheral portion of the connector, the outer peripheral portion of the connector 3, and the cover Even when the height of the gap between the outer peripheral portion of the connector 6 and the inner surface facing the connector changes, the waterproof adhesive 7A can be deformed to ensure waterproofness, dustproofness and rustproofing ability.

Further, in this example , the inner surface side of the case 3 is a surface facing the outer peripheral portion of the connector 2 and the position where the waterproof adhesive 7A is bonded to the case 3 and the connector 2 is different. The protrusion 31 is provided at a position on the inner side of the electronic device with respect to the bonding portion. The protrusion 31 is integrally formed with the case 3 by aluminum die casting.

  One or more protrusions 31 are provided in the depth direction of FIG. In the example shown in FIG. 2, two protrusions 31A1 and 31A2 are provided.

  A gap 22 is provided between the protruding portion 31 and the outer peripheral portion of the connector 2 at a position facing the protruding portion 31. The height H1 of the gap 22 is smaller than the gap between the outer peripheral portion of the connector 2 and the inner surface facing the outer peripheral portion of the connector of the case 3, that is, the gap between the portions bonded by the waterproof adhesive 7A. is doing. For example, if the height of the gap between the portions bonded by the waterproof adhesive 7A is 1.0 mm, the height H1 of the gap 22 is set to about 0.2 mm. Further, the gap between the protruding portion 31 and the outer peripheral portion of the connector 2 is bonded and fixed by an adhesive 7B.

  The adhesive 7B is a silicon-based room temperature curable or thermosetting resin. The adhesive 7B only needs to fix the tip of the protrusion 31 to the outer periphery of the connector 2, and therefore does not need to be a resin having elasticity after curing. When there is no adhesive 7 </ b> B, a gap 22 exists between the protruding portion 31 and the outer peripheral portion of the connector 2 at a position facing the protruding portion 31. Here, since the electronic device is attached to the engine and the vehicle body, vibrations of the engine and the vehicle body are transmitted to the electronic device. For example, when the case 3 vibrates, the tip of the protrusion 31 repeatedly collides with the connector 2, and wear on the outer periphery of the connector 2 occurs. However, when the protrusion 31 and the connector 2 are fixed by the adhesive 7B, both the case 3 and the connector 2 vibrate, so that the above-described wear does not occur. Accordingly, a different type of adhesive from the waterproof adhesive 7A can be used as the adhesive 7B. However, when different types of adhesives are used for the adhesive 7B and the waterproofing adhesive 7A, each application process is required, whereas if the same adhesive is used, 2 processes can be performed in one process. Since it can also be applied simultaneously to the place, in consideration of the manufacturing process, the same type of adhesive as the waterproofing adhesive 7A can be used as the adhesive 7B.

  Further, on the inner surface side of the cover 6, the surface facing the outer peripheral portion of the connector 2, and at a position different from the adhesive portion between the cover 6 and the connector 2 by the waterproof adhesive 7 </ b> A, the adhesive portion Also, a protrusion 61 is provided at a position inside the electronic device. The protrusion 61 is formed by bending the cover 6 integrally with the cover 6. A gap is provided between the protruding portion 61 and the outer peripheral portion of the connector 2 at a position facing the protruding portion 61. Further, the gap between the protruding portion 61 and the outer peripheral portion of the connector 2 is bonded and fixed by an adhesive 7C. The adhesive 7 </ b> C is the same type as the adhesive 7 </ b> B, and fixes the tip of the protrusion 61 to the outer periphery of the connector 2. One or more protrusions 61 are provided in the depth direction of FIG. In the example shown in FIG. 2, two protrusions 61A1 and 61A2 are provided.

  The connector 2 is integrally provided with an eaves portion 27. If the adhesive 7 </ b> B applied to the protruding portion 31 is pushed out, it may adhere to the lead terminal 26 or the substrate 1. Even in such a case, the extruded adhesive can be prevented from adhering to the lead terminal 26 or the substrate 1 by being received by the eaves portion 27.

  Next, the operation of the protrusions 31 and 61 will be described.

  First, by providing the protrusions 31 and 61, even when stress is applied to the connector 2, the tip of the protrusion 31 contacts the outer periphery of the connector 2 and acts as a stopper to prevent a large deformation of the housing. In addition, it is possible to prevent a large stress from being applied to the waterproof adhesive 7A, and it is possible to prevent deterioration of the waterproof property. That is, the lead terminal 26 of the connector 2 is connected to the board 1 by the solder 4 and the board 1 is fixed by the screws 5A and 5B. When an external force is applied to the connector 2, the connector 2 is movable with a screw 5 </ b> A close to the connector 2 as a fulcrum. Here, since the movable range is restricted by the protrusions 31 and 61, the amount of deformation in the adhesive portion by the waterproof adhesive 7A can be restricted, so that the waterproof adhesive 7A can be prevented from being subjected to a large stress, and is waterproof. Deterioration can be prevented.

  Secondly, the protrusions 31 and 61 are provided at positions different from the bonding portion between the case 3 and the connector 2 and the bonding portion between the cover 6 and the connector 2 by the waterproof adhesive 7A. As described in the prior art, as in Patent Document 1, when a protrusion is provided on the bonding portion, when the bonding portion is stressed, the relative position of the housing and the connector changes with the tip of the protrusion as a fulcrum. There is a possibility that the waterproofness at the seal portion is lowered due to the interface peeling.

  On the other hand, by providing the waterproof adhesive 7A at a position different from the adhesive portion between the cover 6 and the connector 2, even when stress is applied to the adhesive portion, the waterproof property at the seal portion does not deteriorate. It is.

  Third, the protrusions 31 and 61 are provided at positions on the inner side of the electronic device than the bonding portion between the cover 6 and the connector 2 by the waterproof adhesive 7A. Lead terminals 26 of the connector 2 are connected to the substrate 1 by solder 4. Therefore, the connector 2 has a structure that is fixed to the substrate 1 at the end of the lead terminal 26. The lead terminal 26 is bent, for example, by 90 degrees near the center thereof. Here, when the bending angle is deviated from, for example, 90 degrees, the connector 2 is attached to the surface of the board 1 in a slightly inclined state. Further, when the end portion of the lead terminal 26 is soldered to the substrate 1, when the lead terminal 26 is fixed at a right angle with respect to the plane of the substrate 1, the angle of the lead terminal 26 with respect to the plane of the substrate 1 is 90 degrees. Even when the position is further shifted, the connector 2 is attached with a slight inclination with respect to the surface of the substrate 1. In such a case, since the upper surface of the connector 2 is engaged with the protruding portion 31 or the lower surface of the connector 2 is engaged with the protruding portion 61, the connector 2 is positioned between the protruding portion 31 and the protruding portion 61. Be regulated. As a result, the connector 2 is positioned between the case 3 and the cover 6. That is, a gap between the outer periphery of the connector 2 to which the waterproof adhesive 7A is applied and the inner surface of the case 3 facing the outer periphery of the connector, and the outer periphery of the connector 3 and the connector of the cover 6 Since the gap between the outer peripheral portion and the inner surface facing the gap can be prevented from becoming narrower than a predetermined dimension, and the thickness of the waterproof adhesive 7A can be increased to a predetermined dimension or more, the adhesive strength can be ensured. , Can improve waterproofness.

Here, another example of the protrusion 31 provided on the case 3 of the automotive electronic device according to the reference example will be described with reference to FIGS. 3 and 4.
3 and 4 are cross-sectional views showing other configurations of the protrusion 31 provided on the case 3 of the automotive electronic device according to the reference example . 3 and 4 show a cross-sectional shape at the position AA ′ in FIG. 1.

  In the example shown in FIG. 3, the protrusion 31 shown in FIG. 1 includes three protrusions 31B1, 31B2, and 31B3 in the depth direction of FIG. 1, as shown in FIG. Further, the protrusion 61 shown in FIG. 1 includes three protrusions 61B1, 61B2, and 61B3 in the depth direction of FIG. 1, as shown in FIG.

  In the example shown in FIG. 4, the protrusion 31 shown in FIG. 1 is composed of one protrusion 31C as shown in FIG. 4 in the depth direction of FIG. This is made longer than the examples shown in FIGS. Further, the protrusion 61 shown in FIG. 1 is composed of one protrusion 61C in the depth direction of FIG. 1 as shown in FIG. 4, but the length in the depth direction in FIG. It is longer than the example shown in FIG.

As described above, according to this example , the protrusion can be provided at a position different from the bonding portion between the case and the connector and the bonding portion between the cover and the connector, thereby improving the waterproofness.

Next, with reference to FIGS. 5 to 7, description will be given of a configuration of an automotive electronic device according to an exemplary embodiment of the present invention.
Figure 5 is a sectional view showing the structure of an automobile electronic device according to an exemplary embodiment of the present invention. 6 is an enlarged cross-sectional view of a main part of FIG. FIG. 7 is an enlarged plan view of a main part of FIG. The same reference numerals as those in FIG. 1 indicate the same parts. 5-7, the same code | symbol has shown the identical part.

In the present embodiment, the configuration of the protruding portion 31D provided on the case 3 is different from the protruding portion 31 shown in FIG. 1, and the protruding portion 29 is provided on the connector 2. Further, the projection 61 provided on the cover 6 shown in FIG. 1 is not provided.

As shown in FIG. 7A, the protrusion 31D provided on the case 3 protrudes in a rectangular shape, and a recess is formed at the center thereof. A protrusion 29 is provided on the upper surface of the connector 2 so as to protrude to the position of the recess of the protrusion 31D. The protrusion 29 is integrally formed with the connector 2.

In FIG. 1, as described above, since the substrate 1 is assembled in conformity with the electronic component 12, it is necessary to absorb dimensional variations. Therefore, the projection 29 of the connector 2 has a clearance 24 for absorbing this dimensional variation.

  On the other hand, as described above with reference to FIG. 1, the gap 22 is provided between the protruding portion 31D and the outer peripheral portion of the connector 2 at a position facing the protruding portion 31D. The height H <b> 1 of the gap 22 is smaller than the width L <b> 1 of the clearance 24. For example, when the height H1 of the gap 22 is 0.2 mm, the width L1 of the clearance 24 is about 1 mm.

The protrusion 31D of the case 3 and the protrusion 29 of the connector 2 are provided at positions different from the position where the waterproof adhesive 7 is applied. Further, the protruding portion 31D of the case 3 and the protruding portion 29 of the connector 2 are provided on the inner side of the electronic device from a position different from the position where the waterproof adhesive 7 is applied.

  In addition, the adhesive 7B is filled in the concave portion inside the rectangular protrusion 31D. The tip of the protrusion 31D and the outer peripheral surface of the connector 2 are also bonded by the adhesive 7B. Therefore, the adhesive 7B in the recess inside the rectangular protrusion 31D is in a substantially closed space.

Next, the operation of the protrusion 31D of the case 3 and the protrusion 29 of the connector 2 will be described with reference to FIG.

  The electronic device shown in FIG. 5 is fixed to an engine or a vehicle body. The connector 2 is a male connector. On the other hand, the sensor and the actuator are connected to a cable, and a female connector is connected to the end of the cable. And a female connector is inserted with respect to the connector 2, external force is applied, and connectors are connected.

The external force F1 applied to the connector 2 is transmitted to the protrusion 29 . At this time, the waterproof adhesive 7B filled in the substantially closed space is pushed, but since the waterproof adhesive 7A is filled in the substantially closed space, there is almost no space for deformation when pushed, A high elastic modulus will be generated. Then, a reaction force F2 that opposes the external force F1 is generated. This reaction force F2 can prevent the protrusion 29 from shifting in the pressed direction. Therefore, since the stress acting on the waterproof adhesive 7A can be relaxed, it is possible to prevent the waterproof property from deteriorating.

  When the female connector is connected to the connector 2, the direction of the external force acting on the connector 2 does not necessarily act only in the direction shown in FIG. For example, an external force that acts on the connector 2 may act. Even in such a case, since such an external force has a component in the direction of the external force F1 in FIG. 6, the force in the direction of the external force F1 among the external forces acting on the connector as a whole is described above. As described above, the same reaction force F2 is generated, and the effect is exhibited.

Next, the shape of the protrusion 31D and the protrusion 29 will be described with reference to FIG. In the example shown in FIG. 7A, a rectangular shape is provided so that the receiving surface can be secured against the external force received by the connector 2. In the example shown in FIG. 7B, the U-shaped protrusion 29A is so strong as to be strong against the lateral direction of the external force. In the example shown in FIG. 7C, an H-shaped protrusion 29B is considered in the horizontal direction as in FIG. 7B. In the example shown in FIG. 7D, the case of a normal round projection 29C is shown. As shown in such an example, a shape corresponding to the productivity and the external force is selected.

As shown in FIG. 2, two combinations of the protrusion 31D and the protrusion 29 shown in FIG. 7 can be provided in the depth direction of the paper surface of FIG. 5, or as shown in FIG. It can also be provided. Moreover, as shown in FIG. 4, it is also possible to make a long one into a screen.

  In the example shown in FIG. 5, no protrusion is provided between the cover 6 and the connector 2, but the protrusion 61 shown in FIG. 1 may be provided.

  As described above, according to the present embodiment, the waterproofness can be improved by providing the protruding portion at a position different from the bonding portion between the case and the connector and the bonding portion between the cover and the connector.

  Also, by providing a recess in the protrusion, and combining this protrusion with another protrusion and filling the recess space with an adhesive, the stress applied to the waterproof adhesive portion can be relieved, and the waterproof property can be reduced. It can be improved.

Next, the configuration of an automotive electronic device according to another embodiment of the present invention will be described with reference to FIG.
FIG. 8 is a cross-sectional view showing a main configuration of an automobile electronic device according to another embodiment of the present invention. The same reference numerals as those in FIG. 1 indicate the same parts.

  In the present embodiment, the configuration of the protrusion 31E is different from the configuration shown in FIG. That is, the protruding portion 31E is a rectangular protruding portion similar to the protruding portion 31D shown in FIG. 5 and FIG.

  As a result, when the application workability of the adhesive 7B is taken into consideration, the adhesive can be easily applied because of the enclosure. In addition, since the substantially closed space is formed when the connector 2 is assembled, the characteristics of the elastic body when there is little volume relief can be used, so that a reaction force against external force application can be obtained.

As described above, according to the present embodiment, the waterproofness can be improved by providing the protruding portion at a position different from the bonding portion between the case and the connector and the bonding portion between the cover and the connector.

It is sectional drawing which shows the structure of the electronic device for motor vehicles by a reference example . It is A-A 'sectional drawing of FIG. It is sectional drawing which shows the other structure of the projection part 31 provided in case 3 of the electronic device for motor vehicles by a reference example . It is sectional drawing which shows the other structure of the projection part 31 provided in case 3 of the electronic device for motor vehicles by a reference example . It is sectional drawing which shows the structure of the electronic device for motor vehicles by one Embodiment of this invention. It is a principal part expanded sectional view of FIG. It is a principal part enlarged plan view of FIG. It is sectional drawing which shows the principal part structure of the electronic device for motor vehicles by other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Board | substrate 11 ... Electronic component 12 ... Electronic component 121 modularized ... Terminal 122 of electronic component ... Guide pin 2 of electronic component ... Connector 22 ... Clearance 24 ... Clearance 26 of a board | substrate plane direction ... Terminal 27 ... Reception surface 3 ... Case 31 ... Projection 32 ... Radiation fin 4 ... Solder 5 ... Set screw 6 ... Cover 61 ... Projection 7A ... Waterproof adhesives 7B and 7C ... Adhesive

Claims (8)

A case, a substrate fixed to the inside of the case, a cover fixed to the case and constituting a housing, and a lead terminal connected to a wiring formed on the substrate; and an opening of the housing Having a connector positioned on the part,
An automotive electronic device having an adhesive between the outer peripheral portion of the connector and the inner peripheral portion of the case and between the outer peripheral portion of the connector and the inner peripheral portion of the cover.
Wherein provided in the casing at a position different from the bonding portion by adhesive, Bei example a protrusion from the inner circumferential side protruding toward the outer circumferential portion of the connector of the case,
The protrusion has a recess formed in the center thereof and protrudes in a rectangular shape or a ring shape,
An automotive electronic device , wherein an adhesive is filled in the recess . The automobile electronic device according to claim 1,
The automobile electronic device according to claim 1, wherein the protrusion is provided at a position closer to the inside of the electronic device than a position of the adhesive portion by the adhesive. The automobile electronic device according to claim 1,
An automotive electronic device, wherein a tip of the protrusion and an outer peripheral portion of the connector are bonded and fixed with a second adhesive. The automobile electronic device according to claim 3,
An automotive electronic device, wherein a gap is provided between a tip of the protrusion and an outer peripheral portion of the connector. The automobile electronic device according to claim 3,
An automotive electronic device comprising a receiving surface for the second adhesive provided in the connector, in the vicinity of the application portion of the second adhesive. The automobile electronic device according to claim 1 ,
An automobile electronic device comprising a protrusion formed on the connector and protruding at the position of the recess of the protrusion. The automobile electronic device according to claim 6 ,
A first gap is provided between the tip of the protrusion and the outer periphery of the connector;
A second gap is provided between a side surface of the protruding portion of the connector and a side surface of the protruding portion of the case;
The automobile electronic device according to claim 1, wherein the first gap is smaller than the second gap. The automobile electronic device according to claim 1,
An automotive electronic device comprising: a protrusion provided on the cover at a position different from an adhesive portion by the adhesive, and protruding from an inner peripheral side of the cover toward an outer peripheral portion of the connector.

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