JP5929649B2 - In-vehicle device - Google Patents

Description

  The present invention relates to an in-vehicle device used by being mounted on a vehicle.

As an in-vehicle device mounted on a vehicle, for example, there is an ETC (registered trademark) or DSRC (registered trademark) in-vehicle device mounted in a vehicle interior.
These in-vehicle devices are configured such that a main body portion including a circuit board on which electronic components are mounted and a card connector into which an IC card such as an ETC card is inserted is accommodated in a case. The lower case holds the main body, and is responsible for fixing in the passenger compartment, protecting from external forces, forming an external design, and the like.

  As such an in-vehicle device, conventionally, it consists of an upper case and a lower case, each provided with a locking claw, and the upper case and the lower case are overlapped and fitted together to lock the locking claws together. An apparatus using cases that are connected to each other while sandwiching a circuit board has been proposed (see Patent Document 1). By pinching the circuit board with the case, the number of parts such as screws for fixing the circuit board to the case can be reduced, and a space for attaching the screws or the like is not required, and the in-vehicle device can be downsized.

Japanese Patent Application No. 2011-97083

  In order to reduce the cost of products, parts may be shared between different devices. When the above-described case is used for both an ETC in-vehicle device and a DSRC in-vehicle device, in order to downsize the DSRC in-vehicle device having many mounted circuit parts to the same size as the ETC in-vehicle device, For example, it is conceivable to use a circuit board (for example, a 6-layer board) that is thicker than a 4-layer board.

  In the case where the circuit board is clamped by the case as described above, if the clamping width of the case (the interval between the portions holding the circuit board) is set in accordance with the thickness of the DSRC circuit board, the thinner ETC is used. When the circuit board is clamped, a gap is generated, and there is a possibility that a rattle is generated due to the vibration of the vehicle or a contact failure of the IC card occurs. On the other hand, if the clamping width is set according to the ETC circuit board, the thicker DSRC circuit board will not fit within the width, and the case may be distorted, or the upper case and the lower case may be attached incorrectly. There is a fear.

  The objective of this invention is providing the vehicle-mounted apparatus which can hold | grip and hold | maintain the circuit board of different thickness favorably.

Is made the inventions in order to solve the above problems, the main body portion having a circuit board having electronic components mounted (11) and (3), the in-vehicle device comprising a casing (5), the housing the main body ( 1). The case contacts the first component (41) having a first contact portion (53) that contacts one of the main surfaces of the circuit board and the other one of the main surfaces of the circuit board and cooperates with the first contact portion. And a second component having a second contact portion (37, 38, 39) that works to pinch the circuit board. And the 1st contact part is constituted so that elastic displacement is possible in the crossing direction which is the direction which crosses the main surface of a circuit board.

  The vehicle-mounted device configured as described above is elastically displaced in a direction in which the first contact portion intersects the main surface of the circuit board among the first contact portion and the second contact portion that sandwich the circuit board. Therefore, even if the thickness of the circuit board clamped by the first contact portion and the second contact portion changes, the distance between the first contact portion and the second contact portion changes due to elastic displacement.

  Therefore, the in-vehicle device can hold and hold the circuit boards having different thicknesses, and the circuit board is not pinched so that a gap is formed, or a part other than the first contact portion in the case is deformed. The risk of falling off can be reduced.

  The main body described above is a portion made up of a circuit board and electronic parts for realizing the function of the in-vehicle device. The case is a portion having a function of covering and protecting the outer periphery of the main body. Of course, a configuration in which a part of the case described above is used to realize the function of the in-vehicle device may be used.

  In addition, the code | symbol in the parenthesis described in this column and a claim shows the correspondence with the specific means as described in embodiment mentioned later as one aspect, Comprising: The technical scope of this invention is shown. It is not limited.

It is a disassembled perspective view of the vehicle-mounted apparatus of a present Example. FIG. 2A is a bottom view of the upper case of the present embodiment, FIG. 2A shows a state of only the upper case, and FIG. 2B shows a state in which circuit boards are stacked. It is a perspective view of the lower case of a present Example. 4A is a perspective view showing a state in which the circuit boards of the lower case of this embodiment are overlaid, and FIG. 4B is a side view seen from the point A in FIG. FIG. 5C is a side view seen from the B viewpoint in FIG. It is the side view which expanded the back of the lower case of a present Example. It is a figure which shows the state (locking state) which assembled | attached the upper case and the lower case, Comprising: FIG. 6 (A) is a top view, FIG.6 (B) is a right view. 7A is a cross-sectional view taken along the line CC in FIG. 6A, and FIG. 7B is a cross-sectional view taken along the line DD in FIG. 6A. It is EE sectional drawing of FIG. 6 (A), Comprising: FIG. 8 (A) is the state (locking state) which assembled | attached the upper case and the lower case, FIG.8 (B) is an upper case and a lower case Is a state where the assembly is released (non-locking state). 9A is a GG cross-sectional view of FIG. 2B, FIG. 9B is a HH cross-sectional view of FIG. 2B, and FIG. 9C is FIG. It is II sectional drawing of). It is FF sectional drawing of FIG. 6 (A). FIG. 11A is a side view illustrating a procedure for assembling the upper case and the lower case, FIG. 11A shows a state in which the upper case and the lower case are separated, and FIG. FIG. 11 (C) is a diagram illustrating a state where the upper case and the lower case are slid to be in a locked state. It is JJ sectional drawing of FIG. 6 (A), Comprising: FIG. 12 (A) is the state which removed the assembly | attachment of the upper case and the lower case (non-locking state), and FIG. And the lower case are assembled (locked state).

Embodiments of the present invention will be described below with reference to the drawings.
[Example]
(1) Configuration of On-Board Device The on-board device 1 according to the present embodiment is an ETC (registered trademark) on-board device used by being mounted on a vehicle. As shown in FIG. 1, the in-vehicle device 1 includes a main body 3 of the in-vehicle device 1 and a case 5 that accommodates the main body 3.

<Configuration of each part>
The main body 3 includes a circuit board 11, a card connector 13, operation components 15a and 15b, a lens 15c, and the like. When assembled, the main body 3 is relatively thin in the vertical direction and has a shape that greatly expands in the front and rear, right and left directions.

  In the following description, the configuration of the in-vehicle device 1 will be described using the front and rear, top and bottom, and left and right directions. It is not intended to limit.

  The circuit board 11 is a printed wiring board on which a plurality of electronic components that are electrically connected by printed wiring are mounted. In FIG. 1, only a part of the electronic component is shown for the purpose of facilitating understanding of the drawing. The circuit board 11 reads information of an IC card (ETC card) through a card connector 13 and is connected to an antenna (not shown) via a connector provided at the rear, and communicates with an ETC roadside device (not shown) via the antenna. I do.

  The card connector 13 is a card holder having a substantially rectangular cylindrical shape slightly larger than the IC card, into which the IC card can be inserted, a space for accommodating the IC card is provided therein, and an IC card is provided in the front. An opening 13a for inserting a card is formed. In addition, a connection terminal that is connected to the contact portion of the chip of the IC card in a state where the IC card is inserted is provided. The card connector 13 is formed of a high strength material (metal or high strength engineering plastic) to protect the IC card. An opening for weight reduction is formed on the upper surface.

  The operation parts 15a and 15b are operation parts for the user to execute control of the main body 3 and removal of the IC card. These operation parts are held by the case 5 so as to be displaceable within a predetermined range. The lens 15c is a light emitting device that indicates the operating state of the in-vehicle device 1 and whether or not an IC card is inserted. The circuit board 11 and the card connector 13 are fixed by screws 17.

Next, Case 5 will be described. The case 5 has an upper case 21 and a lower case 41.
As shown in FIG. 2A, the upper case 21 has an upper wall 22 that expands in the front-rear and left-right directions, an opening in which the operation components 15a and 15b and the like are disposed, and an opening 23a into which the IC card is inserted. A wall 23, a rear wall 24 formed with a plurality of gaps for communicating connection ports of various connectors provided on the circuit board 11 with the outside, a left side wall 25 and a right side provided on both left and right sides of the upper wall 22 And a wall 26. The lower side of the upper case 21 is an opening and covers the main body 3 from the upper side.

  On the left side wall 25, a first left side locking piece 31 is formed at a position closer to the front, and a second left side locking piece 32 is formed at a position closer to the rear. Further, the right side wall 26 is formed with a first right side locking piece 33 at a position near the front, a second right side locking piece 34 at a position near the rear, and a rear end locking piece at the rear end. 35 is formed.

  The first left side locking piece 31, the second left side locking piece 32, the first right side locking piece 33, the second right side locking piece 34, and the rear end locking piece 35 are all in the inner direction, that is, the main body portion. It protrudes in the direction in which 3 is arranged.

  In addition, ribs 36 for increasing strength are arranged in a lattice pattern on the upper case 21. A left projection 37 is formed at a position along the left side wall 25 and behind the first left locking piece 31. A right protrusion 38 is formed at the position along the right wall 26 and behind the first right locking piece 33, and behind the second right locking piece 34 and in front of the rear end locking piece 35. A rear protrusion 39 is formed. The left protrusion 37, the right protrusion 38, and the rear protrusion 39 are higher than the other ribs 36, that is, protrude downward.

  As shown in FIG. 3, the lower case 41 cooperates with the lower wall 42 extending in the front-rear and left-right directions and the rear wall 24 of the upper case 21 to form an opening for externally connecting the connector of the circuit board 11. It has a lower wall 43 and a left inner wall 44 and a right inner wall 45 provided on the left and right sides of the lower wall 42. The lower case 41 covers the main body 3 from below. In a state where the lower case 41 is assembled with the upper case 21, the left inner wall 44 and the right inner wall 45 are located inside the left side wall 25 and the right side wall 26 of the upper case 21.

  The left inner wall 44 is formed with a first substrate support portion 46 at a position closer to the front, and a left rear locking portion 47 is formed at a position closer to the rear. The right inner wall 45 has a second substrate support portion 48 formed at a position near the front, a third substrate support portion 49 formed at a position near the rear, and a rear end locked portion 50 at the rear end. Is formed.

  Since the first substrate support unit 46, the second substrate support unit 48, and the third substrate support unit 49 basically have the same configuration, the second substrate support unit 48 shown in FIG. This will be explained as a representative. In FIG. 4B, components corresponding to those in FIG.

  The second substrate support portion 48 is engaged with the support column 51 extending upward from the surface 45 a facing upward on the outer side of the right inner wall 45, the locking piece 52 extending forward from the upper end of the support column 51, and the upper end of the support column 51. It has a movable part 53 which is a columnar member extending backward in the opposite direction to the stop piece 52.

  The locking piece 52 is connected to the right inner wall 45 on the inner side (left side). The outside (right side) is open. That is, it can be said that the locking piece 52 protrudes outward from the right inner wall 45. A groove 54 is formed by the surface 45 a of the right inner wall 45, the support column 51, and the locking piece 52.

  On the other hand, the movable portion 53 is not connected to the right inner wall 45 and extends along the main surface of the circuit board 11, and its tip is formed to be elastically displaceable in the vertical direction intersecting with the main surface of the circuit board 11. Has been.

  A first protrusion 56, a second protrusion 57, and a third protrusion 58 are formed in this order from the front on the upper end of the second substrate support portion 48. The upper portion of the locking piece 52, the upper portion of the column portion 51, and the movable portion, respectively. 53 is provided at the top of the tip. The protruding heights of the first protrusion 56 and the second protrusion 57 are substantially the same, but the third protrusion 58 protrudes above the first protrusion 56 and the second protrusion 57.

  As shown in FIG. 4B, the first substrate support portion 46 has a shape that is substantially reversed left and right with respect to the second substrate support portion 48, and the column portion 51 extends from the surface 44 a facing upward on the outer side of the left inner wall 44. Extends upward.

The third substrate support portion 49 is substantially the same as the second substrate support portion 48 except that the first protrusion 56 is not provided.
The left rear locking portion 47 has the same configuration as the column portion 51, the locking piece 52 and the second protrusion 57 in the second substrate support portion 48, and is different in that the movable portion 53 is not provided.

  As shown in FIG. 5, the rear end locked portion 50 is a section substantially parallel to the surface 45 a and is connected to the rear lower wall 43 and the right inner wall 45, so that the front and right sides are opened. A groove 61 is formed. A locking claw 63 extending downward is formed at the front end of the rear end locked portion 50.

<Placement of each component in the state where the in-vehicle device is assembled>
In the state where the main body 3 and the case 5 are assembled, the in-vehicle device 1 has the upper case 21 and the lower case 41 stacked in the vertical direction as shown in FIGS. 6 (A) and 6 (B). And the main-body part 3 is accommodated in the inside.

  In the above state, the CC cross section of FIG. 6 (A) corresponding to the first substrate support portion 46 is as shown in FIG. 7 (A). That is, the first left locking piece 31 enters the groove 54 at an outer position along the left outer edge of the main body 3. And the surface 31a which faces the upper side in the 1st left side locking piece 31 and the surface 52a which faces the lower side in the locking piece 52 contact, and the 1st left side locking piece 31 and the locking piece 52 latch. doing.

  Similarly, the DD cross section of FIG. 6A corresponding to the second substrate support portion 48 is also the second cross section at the outer position along the right outer edge of the main body portion 3 as shown in FIG. 7B. One right-side locking piece 33 enters the groove 54. And the surface 33a which faces the upper side in the 1st right side locking piece 33 and the surface 52a which faces the lower side in the locking piece 52 contact, and the 1st right side locking piece 33 and the locking piece 52 latch. doing.

  Although not shown, like the first substrate support portion 46 and the second substrate support portion 48, the locking piece 52 and the second left locking piece 32 are locked in the left rear locking portion 47, and the third The locking piece 52 and the second right locking piece 34 are also locked in the substrate support portion 49.

  Further, the EE cross section of FIG. 6A corresponding to the rear end locked portion 50 has a rear end locking piece 35 entering the groove 61 as shown in FIG. The locking piece 35 and the rear end locked portion 50 are locked.

  As described above, the upper case 21 and the lower case 41 are locked at a plurality of positions along the outer edge of the main body 3. That is, the upper case 21 and the lower case 41 are connected to each other and are in a locked state in which movement in the direction away from each other in the vertical direction is suppressed.

Further, in the rear end locked portion 50, the locking pawl 63 and the rear end locking piece 35 are locked, so that the rear end locking piece 35 moves relatively forward and the locking is released. Is suppressed.
At this time, the card connector 13 is disposed on the left inner wall 44 and the right inner wall 45 with a slight clearance. Specifically, as shown in FIG. 7 (B), the second substrate support 48 (right inner wall) with respect to a contact length of 0.8 mm in the left-right direction between the locking piece 52 and the first right locking piece 33. 45) and the clearance of the card connector 13 is as small as 0.2 mm.

  That is, even if the second substrate support portion 48 is deformed inward by receiving an external force, the second substrate support portion 48 is placed on the card before the engagement between the engagement piece 52 and the first right engagement piece 33 is released. It contacts the outer edge of the connector 13 in the left-right direction. The same applies to the left side shown in FIG.

  7A and 7B, the upper case 21 and the lower case 41 clamp the circuit board 11 from different surfaces in the locked state in which the upper case 21 and the lower case 41 are assembled. .

  The upper case 21 is shown in FIGS. 9A to 9C which are GG sectional view, HH sectional view, and II sectional view of FIG. 2B in which the circuit board 11 is arranged on the upper case 21. As shown, the upper surface 11 a of the circuit board 11 contacts the left protrusion 37, the right protrusion 38, and the rear protrusion 39.

  On the other hand, the lower case 41 has a lower surface 11b of the circuit board 11, the first board support part 46, and the second board support part 48, as shown in FIGS. In contact with the movable portion 53 of the third substrate support portion 49.

  Since the upper case 21 and the lower case 41 are configured in this way, when the upper case 21 and the lower case 41 are brought into the locked state, the left protrusion 37, the right protrusion 38, the rear protrusion 39, the movable portion 53, Cooperate to pinch the circuit board 11.

  The right projection 38 and the movable portion 53 of the second substrate support 48 will be described as a representative of these, and as shown in FIG. 10 which is a DD cross-sectional view of FIG. And the third projection 58 of the movable portion 53 are opposed to each other, and the circuit board 11 is sandwiched between the tip of the right projection 38 and the third projection 58. Since the third protrusion 58 protrudes above the first protrusion 56 and the second protrusion 57, when the circuit board 11 is sandwiched, the movable portion 53 is elastically displaced so that the front bends downward.

  Note that when the movable portion 53 is elastically displaced in the downward direction, the support portion 51 comes into contact with the lower surface of the circuit board 11 via the second protrusion 57. Thereby, it is suppressed that the movable part 53 displaces below more than predetermined.

<How to assemble the case>
As shown in FIGS. 11A to 11C, the lower case 41 is overlapped on the upper case 21 and is slid so that the lower case 41 moves relatively forward. It can be in a stopped state.

  More specifically, as shown in FIG. 11 (B), when the lower case 41 is overlapped in a state of being slightly shifted rearward from the assembled state, the JJ cross section in FIG. 6 (A). As shown in FIG. 12A in which the main body 3 is omitted, the first left-side locking piece 31 of the upper case 21 is located outside the groove 54. When sliding as shown in FIG. 11C from this state, the first left-side locking piece 31 is accommodated in the groove 54 as shown in FIG.

  In the state of FIG. 11 (B), the rear end locked portion 50 has the rear end locking piece 35 positioned outside the groove 61 as shown in FIG. 8 (B). In the state (C), the rear end locking piece 35 is accommodated in the groove 61 as shown in FIG.

  The upper case 21 and the lower case 41 are unlocked by sliding the upper case 21 and the lower case 41 so that the state shown in FIG. 11C is changed to the state shown in FIG. 11B. Thus, the upper case 21 and the lower case 41 are in the unlocked state in which the suppression of the relative movement in the vertical direction is released. That is, the upper case 21 and the lower case 41 are slid in an overlapping state, thereby realizing a transition between the locked state and the non-locked state.

(2) Effect In the on-vehicle apparatus 1 of the present embodiment described above, the movable portion 53 and the left protrusion are elastically displaced in the vertical direction intersecting the main surface of the circuit board 11 by the movable portion 53 that sandwiches the circuit board 11. 37, the distance between the right protrusion 38 and the rear protrusion 39 changes.

  Therefore, even if the thickness of the circuit board 11 arranged at the interval changes, the risk that gaps may be formed above and below the circuit board 11 or parts other than 53 may be deformed can be reduced. Even the circuit board 11 can be satisfactorily clamped.

  Further, since the movable portion 53 extends long from the support portion 51 along the main surface of the circuit board 11, the range of elastic deformation is increased, and the circuit board 11 having a wide range of thickness can be favorably pinched. it can.

In addition, since the movable portion 53 extends along the outer periphery of the lower case 41, it is convenient to easily clamp the end portion of the circuit board 11 on which the electronic component is not mounted.
Further, since the movable portion 53 and the locking piece 52 are connected and integrated with the support column 51 as a center, the case 5 can be prevented from being enlarged.

  Even if the circuit board 11 strongly presses the movable part 53 downward, the first protrusion 56 and the second protrusion 57 supported by the support column part 51 come into contact with the circuit board 11, thereby displacing the movable part 53. Is suppressed until the upper end of the third protrusion 58 is aligned with the height of the first protrusion 56 and the second protrusion 57. For this reason, it is possible to prevent the movable portion 53 from being greatly displaced and damaged by applying a large external force.

  In addition, when an external force is applied to the locking piece 52 to displace upward, the first protrusion 56 comes into contact with the circuit board 11 and suppresses the displacement. Therefore, the front end of the locking piece 52 is bent upward, and the engagement with the first left side locking piece 31, the second left side locking piece 32, the first right side locking piece 33, and the second right side locking piece 34. It can suppress that a stop is cancelled | released.

  Further, the first substrate support portion 46, the second substrate support portion 48, and the third substrate support portion 49 in the lower case 41 are separated from the circuit board 11 by the third protrusion 58 alone, or the third protrusion 58 and the first protrusion 56 The contact is made at three points of the second protrusion 57. Therefore, the frictional force with the circuit board 11 can be reduced, and the smooth sliding between the upper case 21 and the lower case 41 can be suppressed.

(3) Correspondence In the above embodiment, the lower case 41 is an example of the first part in the present invention, and the upper case 21 is an example of the second part in the present invention.

The movable portion 53 is an example of the first contact portion in the present invention, and the left protrusion 37, the right protrusion 38, and the rear protrusion 39 are examples of the second contact portion in the present invention.
In addition, the first left side locking piece 31, the second left side locking piece 32, the first right side locking piece 33, and the second right side locking piece 34 are an example of the locked portion in the present invention, and the column portion 51 is provided. It is an example of the stopper in this invention.

The lower surface 11b of the circuit board 11 is an example of the other main surface in the present invention, and the upper surface 11a is an example of one of the main surfaces in the present invention.
Further, the vertical direction corresponds to the crossing direction in the present invention.

[Modification]
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and it goes without saying that various forms can be taken as long as they belong to the technical scope of the present invention.

  For example, although the movable part 53 illustrated the structure extended along the outer periphery of the circuit board 11 in the vicinity of the outer edge of the circuit board 11, if the main surface of the circuit board 11 can be contacted, the position where the movable part 53 is arrange | positioned The extending direction is not particularly limited.

Further, the specific shape of the movable portion 53 is not particularly limited as long as it has a column shape having a length, and may be a thin plate shape, a cylindrical shape, or a bent shape.
Moreover, in the said Example, although the structure which connects the upper case 21 and the lower case 41 by the slide was illustrated, you may be comprised so that it may connect by the structure of other than that. For example, the upper case 21 or the lower case 41 may be provided with a locking claw, and the upper case 21 and the lower case 41 may be connected by overlapping in the vertical direction and locking the locking claw to the other. However, it may be configured to be fixed by screwing or the like.

DESCRIPTION OF SYMBOLS 1 ... Car-mounted apparatus, 3 ... Main-body part, 5 ... Case, 11 ... Circuit board, 21 ... Upper case, 37 ... Left protrusion, 38 ... Right protrusion, 39 ... Back protrusion, 41 ... Lower case, 51 ... Support | pillar part, 52 ... Locking piece, 53 ... Moving part

Claims (4)

An in-vehicle device (1) comprising a main body (3) having a circuit board (11) on which electronic components are mounted, and a case (5) for housing the main body,
The case is
A first component (41) having a first contact portion (53) in contact with one of the main surfaces of the circuit board;
A second component having a second contact portion (37, 38, 39) that contacts the other main surface of the circuit board and clamps the circuit board in cooperation with the first contact portion;
The first contact portion is configured to be elastically displaceable in a crossing direction that is a direction crossing a main surface of the circuit board .
Further, the first component is configured such that when one of the main surfaces of the circuit board comes into contact with the first contact portion, the first contact portion is elastically displaced to a predetermined position. An in-vehicle device comprising a suppression unit that contacts one side and suppresses elastic displacement exceeding the predetermined position of the first contact unit . The first contact portion is a columnar member extending along a main surface of the circuit board from a column portion (51) provided in the first component, and a tip extending from the column portion is in the intersecting direction. The vehicle-mounted device according to claim 1, wherein the vehicle-mounted device is configured to be elastically displaceable. The first part includes a locking piece (52) extending from the support column in a direction opposite to the first contact portion,
The second part includes a locked portion (31, 32, 33, 34) that locks with the locking piece,
The in-vehicle device according to claim 2, wherein the first component and the second component are connected to each other by locking the locking piece and the locked portion. The said 1st component is equipped with the stopper (51) which suppresses the displacement more than the predetermined of a said 1st contact part by contacting one of the main surfaces of the said circuit board. The Claim 1 to Claim 3 characterized by the above-mentioned. The in-vehicle device according to any one of the above.

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