JP5533893B2 - Electronic equipment - Google Patents

Description

  The present invention relates to an electronic device in which an end portion of a circuit board is inserted into a card edge connector.

  Conventionally, as disclosed in Patent Document 1, an electronic device in which an end portion of a circuit board is inserted into a card edge connector is known. In the case of a card edge connector, the circuit board itself serves as a male terminal. In Patent Document 1, the circuit board is housed in the internal space of the housing (hood portion) and is fixed to the housing. Then, by inserting one end of the circuit board into the insertion space provided in the housing of the card edge connector, a plurality of electrodes provided on the end surface of the circuit board and terminals exposed from the housing The contact portion (contact portion) comes into contact with each other to achieve electrical conduction. Further, the end of the circuit board is fixed (held) by the reaction force of the terminals constituting the card edge connector due to spring deformation, so-called urging force.

JP 2003-178834 A

  By the way, in the electronic device described above, at least a part including the insertion space of the housing is accommodated in the internal space of the housing. Since assembly tolerances are required, there is always a gap between the outer peripheral surface (side surface) excluding the front end surface where the insertion space opens in the housing and the back surface opposite to the front end surface, and the inner surface of the housing. End up.

  Due to this gap, rattling occurs between the housing and the housing. For example, in a state where the electronic device is assembled in a vehicle, when the wire harness electrically connected to the terminal is shaken due to vehicle vibration, the housing is displaced with respect to the housing. For example, when the housing rotates about the circuit board, the terminals held by the housing pierce the electrodes of the circuit board. As a result, the terminal may be damaged or deformed, for example, the plating layer on the terminal surface may be peeled off. In addition, there is a possibility that a short circuit may occur due to the peeled plating scraps. Furthermore, the contact resistance between the terminal and the electrode may change due to a change in the biasing force of the terminal. Further, even when the housing is translated in the thickness direction of the circuit board, for example, the contact resistance between the terminal and the electrode may change or an open (non-contact state) may occur due to a change in the biasing force of the terminal. . Thus, the connection reliability between the terminal and the electrode may be reduced.

  In view of the above problems, an object of the present invention is to suppress a decrease in electrical connection reliability due to relative displacement between a housing and a housing in an electronic device including a card edge connector.

In order to achieve the above object, the invention according to claim 1
A circuit board provided with a plurality of electrodes on at least one of both surfaces at one end; and
A housing having an insertion space into which one end of a circuit board is inserted and arranged, and a spring-deformable member that is held in the housing and electrically connects the electrode and the harness, A protrusion that protrudes into the space, the protrusion including a contact portion that contacts the electrode, the contact portion corresponding to a depth direction of the insertion space and a thickness direction of the circuit board; A card edge connector having a plurality of terminals arranged along a width direction perpendicular to both directions of the direction;
It has a bag shape and has a fixing part for fixing the circuit board inside. One end of the circuit board fixed to the fixing part is inserted into the insertion space of the housing and the electrode is in contact with the terminal. A housing for housing at least a part of the housing including the circuit board and the insertion space in the internal space,
The card edge connector is provided at one end side in the longitudinal direction of the card edge connector, and is provided at an action point portion that functions as an action point, at a position closer to the other end in the longitudinal direction than the action point portion, and the insertion space is opened. And a fulcrum portion functioning as a fulcrum that is supported on the outer peripheral surface so as to be rotatable along the outer peripheral surface excluding the front end surface of the housing and the back surface opposite to the front end surface. By operation, it has a lever that assists the insertion force to insert the circuit board into the insertion space,
The housing has a receiving part for the action point part to function as the action point,
The housing and the lever have a fitting portion that fits in contact with each other at least in the depth direction in a state where the rotation operation of the lever for inserting the circuit board into the insertion space is completed,
A pair of fitting portions are provided so as to sandwich the circuit board in one direction orthogonal to the depth direction,
The fitting portion of the housing protrudes from the outer surface of the facing portion facing the outer peripheral surface of the housing in the housing,
The fitting part of the lever is provided in the part opposite to the action point part with respect to the fulcrum part,
One of the contact portion with the lever in the depth direction in the fitting portion of the housing and the contact portion with the housing in the depth direction in the fitting portion of the lever is inclined with respect to one direction and the depth direction. It has a taper shape.

  As described above, in the present invention, since the lever that uses the lever principle is provided in the card edge connector, even if the number of electrodes (number of terminals) is large, the circuit board is compared with the configuration without the lever. Is easy to insert into the insertion space.

  In addition, a lever provided on the card edge connector is used to suppress relative displacement between the housing and the housing. Specifically, a pair of fitting portions that are fitted in contact with each other in at least the depth direction are provided on the housing and the lever so as to sandwich the circuit board in one direction. Then, one of the contact portion with the lever in the depth direction in the fitting portion of the housing and the contact portion with the housing in the depth direction in the fitting portion of the lever is defined in one direction and the depth direction. And has a tapered shape. For this reason, when the contact parts come into contact with each other by the rotation of the lever, a force along one direction acts on the housing via the lever. As described above, since the fitting portion is provided so as to sandwich the circuit board in one direction, rattling between the housing and the housing is suppressed in at least one direction by fitting both fitting portions respectively. can do. That is, it is possible to suppress relative displacement between the housing and the housing, and to suppress a decrease in electrical connection reliability.

As claimed in claim 2,
The fitting portions may be provided on both surfaces of the circuit board in the height direction.

  According to this, rattling between the housing and the housing can be suppressed at least in the height direction. Therefore, it is effective to suppress the change of the urging force. That is, it is possible to suppress the change in contact resistance between the terminal and the electrode and the occurrence of openness.

As claimed in claim 3,
The electrodes are provided on both sides of the circuit board,
The plurality of terminals, corresponding to the electrodes, have a terminal protruding from one wall surface in the height direction constituting the insertion space, and a terminal protruding from the wall surface facing the one wall surface,
The fitting portion is preferably provided at the same position in the depth direction and the width direction, and at a position where the distance from the center of the insertion space is equal in the height direction.

  According to this, since the center of the insertion space and the center of the circuit board substantially coincide with each other in the height direction, the urging forces of the terminals positioned on both sides of the circuit board can be made substantially equal. .

As claimed in claim 4,
The fitting portions may be provided on both side surfaces of the circuit board in the width direction.

  According to this, rattling between the housing and the housing can be suppressed at least in the width direction.

As claimed in claim 5,
The contact portion with the lever in the depth direction in the fitting portion of the housing is tapered away from the circuit board in one direction as the distance from the center of the fitting portion of the housing in the depth direction is increased. Also good.

  According to this, when the lever comes into contact with the tapered portion in the fitting portion of the housing, a force pressing the lever toward the circuit board in one direction acts on the lever. Therefore, rattling between the housing and the housing can be suppressed in at least one direction. In addition, since the fitting portion of the housing has a tapered shape, the fitting portion of the lever can be fitted (press-fitted) into the fitting portion of the housing as the lever rotates.

As claimed in claim 6,
The fitting portion of the housing has a shaft portion that stands up from the outer surface of the facing portion of the housing, and an extending portion that extends from the shaft portion and is disposed to face the outer surface of the facing portion,
The contact part with the housing in the depth direction in the fitting part of the lever has a tapered shape that is further away from the circuit board in one direction as it is farther from the center of the shaft part in the depth direction.
The taper-shaped portion of the lever may be configured to be in contact with the extended portion of the housing and partially enter the gap between the extended portion and the facing portion.

  According to this, when the taper-shaped part in the fitting part of a lever contacts the extension part of a housing | casing, the force pressed down to the circuit board side in one direction will act with respect to a lever. Therefore, rattling between the housing and the housing can be suppressed in at least one direction. Further, since the fitting portion of the lever has a tapered shape, it can be fitted (press-fitted) into the fitting portion of the housing as the lever rotates.

As claimed in claim 7,
The fitting portion of the housing has a columnar shape, and the corner portion between the columnar protruding end surface and the side surface is a contact portion with the lever in the depth direction,
The contact portion with the housing in the depth direction in the fitting portion of the lever may have a taper shape that approaches the circuit board in one direction as the distance from the center of the fitting portion of the housing in the depth direction. good.

  According to this, when the taper-shaped part in the fitting part of a lever contacts the fitting part of a housing | casing, the force which pushes to a lever and the opposite side in one direction will act with respect to a lever. Therefore, rattling between the housing and the housing can be suppressed in at least one direction. Moreover, since the fitting part of the lever has a tapered shape, it can be fitted to the fitting part of the housing as the lever rotates.

As claimed in claim 8,
The fitting part of the lever is provided on both sides in the orthogonal direction so as to sandwich the fitting part of the housing in the orthogonal direction orthogonal to both the one direction and the depth direction,
The fitting part of the housing and the lever are also in contact with each other on both sides in the orthogonal direction across the fitting part of the housing,
It is preferable that the fitting part of a housing | casing and a lever has a shape which replaced the contact part in the depth direction with the orthogonal direction as a contact part in the orthogonal direction.

  According to this, rattling between the housing and the housing can be suppressed even in an orthogonal direction orthogonal to one direction. That is, rattling can be suppressed in both the height direction and the width direction.

As claimed in claim 9,
It is preferable that the fitting part of the housing is provided on the periphery of the opening of the bag-shaped housing.

  According to this, in the depth direction, rattling between the housing and the housing can be suppressed as compared with the configuration in which the housing fitting portion is provided at a position away from the opening periphery.

It is the perspective view which showed typically the electronic device which concerns on 1st Embodiment. FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1 and more specifically embodies an electronic device. It is a perspective view which shows a lever among the electronic devices shown in FIG. It is a perspective view which shows the card edge connector which attached the lever to the housing among the electronic devices shown in FIG. It is a perspective view which shows the rotation operation | movement of a lever for connecting the electrode of a circuit board, and the terminal of a card edge connector. It is a perspective view which shows the rotation operation | movement of a lever for connecting the electrode of a circuit board, and the terminal of a card edge connector. It is a perspective view which shows the rotation operation | movement of a lever for connecting the electrode of a circuit board, and the terminal of a card edge connector. It is a top view which shows the rotation operation | movement of a lever, and respond | corresponds to FIG. It is a top view which shows the rotation operation | movement of a lever, and respond | corresponds to FIG. FIG. 9 is a plan view showing the rotation operation of the lever, corresponding to FIG. 7. It is sectional drawing which follows the XI-XI line of FIG. It is sectional drawing which follows the XII-XII line | wire of FIG. It is sectional drawing which shows schematic structure of the electronic device which concerns on 2nd Embodiment, and respond | corresponds to FIG. It is the figure which expanded the area | region XIV enclosed with the broken line of FIG. It is sectional drawing which shows the modification of a fitting part, and respond | corresponds to FIG. It is the figure which expanded the area | region XVI enclosed with the broken line of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, common or related elements are given the same reference numerals. The depth direction of the insertion space, in other words, the insertion / extraction direction of the circuit board is simply referred to as the depth direction. Further, the thickness direction of the circuit board disposed in the insertion space, in other words, the height direction of the insertion space is simply indicated as a height direction. The width direction of the insertion space orthogonal to both the depth direction and the height direction, in other words, the arrangement direction of the electrodes formed on the circuit board is simply referred to as the width direction.

(First embodiment)
First, a schematic configuration of the electronic device according to the present embodiment will be described.

  As shown in FIGS. 1 and 2, the electronic device 10 includes a circuit board 12, a card edge connector 14, and a housing 16. Such an electronic device 10 is suitable for an electronic control device used as various ECUs (Electric Control Units) of a vehicle, for example.

  As shown in FIG. 2, the circuit board 12 includes an insulating base material 20 made of an electrically insulating material such as a resin, a wiring (not shown) formed on the insulating base material 20, and an electrode 22 (land) as a part of the wiring. And an electronic component (not shown) that is electrically connected to the device.

  The electrode 22 is formed at one end in the depth direction on the circuit board 12 (insulating base material 20). Moreover, it forms in at least one among the one surface 12a and the back surface 12b opposite to this one surface 12a among one edge parts. In addition, the electrodes 22 are arranged along the width direction within the formed surface of the circuit board 12. In the present embodiment, as shown in FIG. 2, electrodes 22 are formed on both surfaces of the one surface 12a and the back surface 12b.

  As the electronic component, a microcomputer, a power transistor, a resistor, a capacitor, or the like can be used. This electronic component is mounted on the circuit board 12 in a region different from the region where the electrodes 22 are formed. Specifically, in the depth direction of the circuit board 12, an end opposite to the one end where the electrode 22 is formed is a portion fixed by a fixing portion 66 described later. In the depth direction, an electronic component is mounted in a region between the formation region of the electrode 22 and the region fixed by the fixing unit 66.

  The card edge connector 14 is a relay member that electrically connects the wire harness 100 (hereinafter referred to as the harness 100) and a circuit (electrode 22) configured on the circuit board 12. The main part includes a housing 30 made of an electrically insulating material, a plurality of terminals 32 held by the housing 30, and a lever 34 that assists the insertion force when the circuit board 12 is inserted into the card edge connector 14. ing.

  The housing 30 is formed by, for example, resin injection molding, and has an insertion space 36 into which one end of the circuit board 12, that is, an end having an electrode formation region is inserted and arranged. As shown in FIG. 2, the insertion space 36 is open to the front end surface 30 a of the housing 30, and a predetermined amount corresponding to the thickness of the circuit board 12 is required to accommodate one end of the circuit board 12. It has a predetermined depth corresponding to the height and the insertion depth of the circuit board 12. Further, the housing 30 has a storage space 38 for storing the harness 100. When the harness 100 is inserted into the storage space 38, the terminal 32 and the harness 100 are electrically connected via the contact 40. It has become. In addition, the terminal 32 having a structure integrated with the harness 100 may be employed.

  The housing 30 has a convex shape for rotatably supporting the lever 34 at a predetermined position on the outer peripheral surface 30b excluding the front end surface 30a and a surface opposite to the front end surface 30a in the depth direction (surface on the harness 100 side). The support part 42 (boss) is provided. This support part 42 protrudes from the outer peripheral surface 30b along the height direction, and has comprised the column shape.

  The terminal 32 is formed using a metal material having good conductivity. For example, phosphor bronze coated with nickel plating and further coated with gold plating can be employed. As shown in FIG. 2, a part of the terminal 32 is held by the housing 30, and one end protrudes into the storage space 38 and is connected to the harness 100. On the other hand, the other end protrudes into the insertion space 36. The protruding portion 44 is provided so as to be spring-deformable, and a part 44 a (hereinafter, referred to as a contact portion 44 a) of the protruding portion 44 is in contact with the electrode 22 in an elastically deformed state. Therefore, a stable contact pressure with the electrode 22 of the circuit board 12 can be ensured. The contact portions 44a of the terminals 32 correspond to the electrodes 22 of the circuit board 12 and are arranged along the width direction.

  In the present embodiment, the protruding portions 44 of the terminals 32 protrude into the insertion space 36 from the wall surfaces facing in the height direction among the wall surfaces constituting the insertion space 36. And the edge part arrange | positioned in the insertion space 36 in the circuit board 12 is fixed (hold | maintained) by the reaction force (biasing force) by the elastic deformation of the terminal 32 located in the both surfaces side of the circuit board 12. Yes. In addition, the terminals 32 located on both sides of the circuit board 12 pass through the center of the insertion space 36 in the height direction, and are arranged symmetrically with respect to a virtual line along the depth direction.

  As shown in FIG. 3, the lever 34 includes a flat plate-like first plate portion 46 and second plate portion 48, and a connecting portion 50 that connects one ends of these plate portions 46 and 48. In this embodiment, the board parts 46 and 48 and the connection part 50 are integrally molded using the resin material.

  The first plate portion 46 has a substantially V shape in which two straight pieces are connected so that the central angle forms an obtuse angle, and one of the two pieces to which the connecting portion 50 is connected is longer than the other. ing. Further, a protrusion 52 functioning as an action point is provided on the surface of the first plate portion 46 opposite to the end of the connecting portion 50 connected to the connecting portion 50 and on the side opposite to the arrangement side of the connecting portion 50. ing. In the present embodiment, the protrusion 52 has a cylindrical shape. The protrusion 52 corresponds to an action point described in the claims.

  In addition, a through hole 54 through which the support portion 42 provided on the outer peripheral surface 30 b of the housing 30 is inserted is provided at the connecting portion of the two pieces constituting the first plate portion 46. That is, the through hole 54 is provided at a position closer to the protrusion 52 than the center of the first plate portion 46 in the longitudinal direction. The through hole 54 has an opening shape corresponding to the outer contour (circular shape) of the support portion 42, and the opening area is slightly larger than the cross-sectional area of the support portion 42 having a columnar shape. For this reason, the through-hole 54 is rotatably supported by the support portion 42 and functions as a fulcrum. This through-hole 54 (the wall surface of the through-hole 54 in the 1st board part 46) is corresponded to the fulcrum part as described in a claim.

  In the first plate portion 46, a lever fitting portion 82 constituting the fitting portion 80 is provided at a portion between the end portion connected to the connecting portion 50 and the through hole 54. Details of the fitting portion 80 and the lever fitting portion 82 will be described later.

  On the other hand, the second plate portion 48 is configured to have the same plate thickness, shape, and size as the first plate portion 46. The entire region is connected by the connecting portion 50 so as to overlap the first plate portion 46. Further, the projection 52, the through hole 54, and the lever fitting portion 82 are formed in the same configuration as the first plate portion 46. Further, the protrusion 52 is provided on the back side of the surface facing the first plate portion 46. That is, in the plate portions 46 and 48, the protrusions 52 are provided on the surfaces opposite to the surfaces facing each other.

  In the lever 34 configured as described above, for example, the end opposite to the end provided with the protrusions 52 of the plate portions 46 and 48, in other words, the connecting portion 50 functions as a power point. In the present embodiment, the lever 34 is assembled to the housing 30 so that the plate portions 46, 48, in other words, the lever fitting portion 82 sandwich the circuit board 12 in the height direction.

  The housing 16 has the insertion space 36 in a state where one end of the circuit board 12 is inserted and disposed in the insertion space 36 of the card edge connector 14 and the electrode 22 of the circuit board 12 is in contact with the terminal 32. It is a bag-shaped member that accommodates at least a part of the card edge connector 14 and the circuit board 12 in the internal space. In the present embodiment, a first case 60 having a cylindrical portion 62 formed in a cylindrical shape whose both ends open so as to cover the outer peripheral surface of the housing 30, a bag shape, assembled to the first case 60, And a second case 64 that constitutes the casing 16 together with the one case 60.

  The housing 16 serves as a fixing part for fixing the circuit board 12, and a fixing part 66 for fixing one end of the circuit board 12 opposite to the one end where the electrode 22 is formed (hereinafter referred to as the opposite end). At least. In the present embodiment, the housing 16 has only a fixing portion 66 as a fixing portion of the circuit board 12, and the circuit board 12 is formed by the fixing portion 66 and the terminals 32 located on both sides of the circuit board 12. Fixed (held). In the present embodiment, a fixing portion 66 is provided on the second case 64 constituting the housing 16. In addition, the fixing portion 66 is provided at the substantially central position of the circuit board 12 in the width direction, and the fixing portion 66 that supports the one surface 12a of the circuit board 12 and the back surface of the circuit board 12 in the vicinity of both ends of the circuit board 12 in the width direction. And a fixing portion 66 that supports 12b.

  Further, as shown in FIG. 2, the first case 60 has a fitting through hole 68 at the end of the cylindrical portion 62 on the second case 64 side in the height direction. Has a wedge-shaped protrusion 70 on the periphery of the bag-shaped opening in the height direction. And the projection part 70 fits in the through-hole 68, the 1st case 60 is assembled | attached to the 2nd case 64, and the bag-shaped housing | casing 16 is comprised. In FIGS. 1 and 5 to 7, illustration of the through hole 68 and the protrusion 70 is omitted.

  Further, the first case 60 has a protective wall 72 for suppressing foreign matter from entering the internal space of the housing 16 in which the circuit board 12 is accommodated, specifically, the electronic component placement region of the circuit board 12. . The protective wall 72 is provided at the same position in the depth direction on the inner surface of the cylindrical portion 62 positioned on both surfaces 12a and 12b of the circuit board 12 in the height direction. The circuit board 12 is accommodated in the housing 16 with a slit formed between the protruding front end surfaces of the protective wall 72 on the one surface 12a and the protective wall 72 on the back surface 12b. And the electrode formation area of the circuit board 12 is located in the bag-shaped opening side rather than the protection wall in the depth direction. The width of the slit in the height direction is set to a length that is longer than the thickness of the circuit board 12 and shorter than the height of the insertion space 36 that opens to the front end surface 30 a of the housing 30. For this reason, the protective wall 72 prevents the foreign matter from entering the back side of the housing 16 with respect to the protective wall 72, while the circuit board 12 is inserted into the insertion space 36 during assembly. The position of the circuit board 12 can be regulated in the vertical direction.

  Moreover, the housing | casing 16 has the receiving part 74 for the protrusion part 52 of the figure lever 34 to function as an action point. The receiving portion 74 is formed on the outer surface of the peripheral edge of the opening of the housing 16, specifically, the outer peripheral surface of the cylindrical portion 62 of the first case 60 in the height direction. In the present embodiment, the receiving portion 74 opens to the harness 100 side in the depth direction while having an upper surface and a side surface facing the outer peripheral surface of the cylindrical portion 62 while being spaced apart from the outer peripheral surface. It has the wall part 76 provided in this. For this reason, the edge part on the opposite side to the connection part 50 in the lever 34 can be accommodated in the space comprised between the wall part 76 and the cylinder part 62 (housing | casing 16).

  A guide groove 78 having one end opened to the harness 100 side in the depth direction is provided on the upper surface of the wall portion 76. Of the wall surfaces constituting the guide groove 78, the wall surface on the harness 100 side in the depth direction is a receiving surface 78 a that receives the protrusion 52 when the circuit board 12 is inserted into the insertion space 36. In the present embodiment, as shown in FIG. 8, the outer contour of the upper surface of the wall portion 76 is rectangular with sides along the depth direction and sides along the width direction. One end of the guide groove 78 is open to the side on the harness 100 side in the depth direction among the sides along the width direction, and the other end is located in the upper surface. Further, the guide groove 78 has a predetermined range extending from the opening end along the depth direction, and the predetermined range extending from the opening end toward the end thereof is inclined with respect to the depth direction and the width direction. Yes. Further, the range from the inclined portion to the end extends along the width direction. Of the surface of the guide groove 78 that has a component perpendicular to the depth direction, that is, the surface of the inclined portion and the surface extending in the width direction, the portion on the harness 100 side in the depth direction is It is a receiving surface 78a.

  Further, the housing 16 has a housing fitting portion 84 corresponding to the lever fitting portion 82 described above. Details of the housing fitting portion 84 will be described later.

  Next, a procedure for assembling the electronic device 10 configured as described above will be described.

  First, the prepared circuit board 12 is inserted into the second case 64 constituting the housing 16 from the end opposite to the end having the electrode formation region. At this time, the end portion of the circuit board 12 is fixed by the fixing portion 66. Next, the first case 60 is assembled to the second case 64 by fitting the protrusions 70 of the second case 64 into the through holes 68 of the first case 60. Thereby, the housing | casing 16 is comprised. In this state, since the housing 16 has the protective wall 72, until the card edge connector 14 is assembled, a foreign object enters deeper than the protective wall 72 of the housing 16 and short-circuits between the electronic components. It is possible to suppress the occurrence of unspecificity.

  A card edge connector 14 is prepared separately. Specifically, the lever 34 is assembled to the housing 30 holding the terminals 32 as shown in FIG. The lever 34 is assembled by inserting the support portions 42 of the housing 30 into the through holes 54 of the lever 34 on both sides in the height direction.

  Then, the card edge connector 14 is assembled to the housing 16 in which the circuit board 12 is fixed and accommodated. In this assembly, the lever 34 described above is used. First, the housing 30 of the card edge connector 14 is inserted into the housing 16 from the front end face 30a side. At this time, as shown in FIGS. 5 and 8, the protrusion 52 of the lever 34 is positioned at the opening end of the guide groove 78 provided in the receiving portion 74 of the housing 16. At this time, the protruding portion 44 (contact portion 44 a) of the terminal 32 is not in contact with the circuit board 12.

  Next, the connecting portion 50 (or the plate portions 46, 48 of the lever 34) so that the lever 34 rotates with the through hole 54 (wall surface thereof) as a fulcrum in a state where the protruding portion 52 enters the guide groove 78. An external force is applied to the vicinity of the end opposite to the protrusion 52 in FIG. As a result, the protruding portion 52 advances to the back side of the guide groove 78, and as shown in FIGS. 6 and 9, when the protruding portion 52 advances to the inclined portion, it is supported by the receiving surface 78a. Thereby, the rotational force with the through hole 54 (fulcrum) as the rotation axis is converted into the insertion force after the depth direction, and the housing 30 is further inserted into the back side of the housing 16. For example, when the protruding portion 52 reaches the inclined portion of the guide groove 78, the protruding portion 44 (contact portion 44 a) of the terminal 32 comes into contact with the circuit board 12.

  Further, when an external force is applied, the protrusion 52 advances to the back side of the guide groove 78 while being supported by the receiving surface 78a, and the protrusion 52 reaches the end of the guide groove 78 as shown in FIGS. At that time, the assembly of the card edge connector 14 to the housing 16 is completed. By the time this assembly is completed, the protruding portion 44 (contact portion 44a) of the terminal 32 is located on the electrode 22 of the circuit board 12 in the depth direction, and the contact portion 44a is in contact with the electrode 22 at the time of completion. . Further, when the assembly is completed, the lever fitting portion 82 and the housing fitting portion 84 constituting the fitting portion 80 are also fitted.

  Thus, the electronic device 10 shown in FIGS. 1 and 2 can be obtained. As described above, in the lever 34, the length from the through hole 54 serving as a fulcrum to the connecting portion 50 serving as a power point is longer than the length of the protrusion 52 from the through hole 54. For this reason, even if the number of terminals 32 is large (for example, 100 to 200), the card edge connector 14 can be assembled to the housing 16 with a small force by the lever principle. In other words, the circuit board 12 can be inserted into the insertion space 36 and the electrode 22 can be brought into contact with the contact portion 44 a of the terminal 32.

  Next, the structure of the fitting part 80 which is a characteristic part among the electronic devices 10 described above will be described.

  As described above, the lever 34 and the housing 16 are fitted in contact with each other at least in the depth direction in a state where the rotation operation of the lever 34 for inserting the circuit board 12 into the insertion space 36 is completed. A joint 80 is provided. The fitting portion 80 includes a lever fitting portion 82 that is a fitting portion on the lever side, and a housing fitting portion 84 that is a fitting portion on the housing 16 side. Further, a pair of fitting portions 80 are provided so as to sandwich the circuit board 12 in one direction orthogonal to the depth direction.

  In the present embodiment, a pair of fitting portions 80 are provided in the height direction. That is, the fitting part 80 is provided on both surfaces 12a and 12b of the circuit board 12 in the height direction. The pair of fitting portions 80 are provided at the same position in the depth direction and the width direction, and at the same distance from the center of the insertion space 36 in the height direction.

The lever fitting portion 82 is provided on the opposite side of the projection 52 with respect to the through hole 54.
Specifically, as shown in FIG. 3, each of the plate portions 46 and 48 is a part of a portion (piece) between the end portion connected to the connection portion 50 and the through hole 54. A lever fitting portion 82 is provided on the narrow-angle side formed by the two pieces constituting 48.

  In the present embodiment, the lever fitting portion 82 is provided integrally with the plate portions 46 and 48, and has a flat plate shape together with the plate portions 46 and 48. Further, as shown in FIG. 8, the lever fitting portion 82 has a groove 82a formed in a substantially rectangular flat plate portion, and the housing fitting portion 84 is inserted into the groove 82a. Reference numeral 82b denotes a root portion that comes into contact with the housing fitting portion 84 in the depth direction when the assembly of the card edge connector 14 to the housing 16 is completed (hereinafter referred to as an assembly completion time). Specifically, the corner portion between the side surface and the upper surface of the root portion 82 b is a contact portion in the depth direction with the housing fitting portion 84. Reference numerals 82c and 82d denote side portions positioned on both sides so as to sandwich the housing fitting portion 84 in the width direction when the assembly is completed. The side portions 82c and 82d are portions that come into contact with the housing fitting portion 84 in the width direction when the assembly is completed. Specifically, the corner portions between the side surfaces and the upper surface of the side portions 82 c and 82 d become contact portions in the width direction with the housing fitting portion 84. Reference numeral 82e denotes a tapered portion provided so that the width of the groove 82a becomes wider toward the opening end in order to guide the housing fitting portion 84 into the groove 82a. In this embodiment, the taper part 82e is provided in the wall surface of the side part 82d which reaches the housing | casing fitting part 84 previously by rotation operation of the lever 34. FIG.

  On the other hand, the housing fitting portion 84 is provided so as to protrude from the outer surface of the facing portion facing the outer peripheral surface 30 b of the housing 30 in the housing 16. In the present embodiment, it is provided so as to protrude from the outer surface of the cylindrical portion 62 of the first case 60 facing the outer peripheral surface 30 b of the housing 30. Further, the housing fitting portion 84 and thus the fitting portion 80 are provided on the opening periphery (near the opening) of the bag-shaped housing 16.

  Further, the contact portion with the lever 34 in the depth direction in the housing fitting portion 84 is tapered such that the further away from the center of the housing fitting portion 84 in the depth direction, the farther from the circuit board 12 in the height direction. I am doing. In the present embodiment, the housing fitting portion 84 extends from the outer peripheral surface 30b of the housing 30 along the height direction, and the outer contour of the cross section perpendicular to the height direction is a perfect circle. Further, as shown in FIGS. 11 and 12, the housing fitting portion 84 has one end connected to the outer peripheral surface 30b, a shaft portion 86 having a constant diameter in the height direction, and one end connected to the shaft portion 86. The diameter-enlarging portion 88 has a diameter that increases as the distance from the outer peripheral surface 30b increases. Furthermore, one end is connected to the enlarged diameter portion 88 and has a head 90 extending in the height direction while maintaining the same diameter as the maximum diameter of the enlarged diameter portion 88. Thus, the outer peripheral surface 88a of the enlarged diameter portion 88 has a tapered shape in the depth direction. Further, it is also tapered in the width direction. The base portion 82b and the side portions 82c and 82d of the lever fitting portion 82 are in contact with the outer peripheral surface 88a of the enlarged diameter portion 88.

  Next, the effect of the characteristic part of the electronic device 10 according to the present embodiment will be described.

  In the present embodiment, the card edge connector 14 is provided with a lever 34 utilizing the lever principle. For this reason, even if the number of electrodes 22 (number of terminals 32) is large, the circuit board 12 can be easily inserted into the insertion space 36 as compared with the configuration without the lever 34.

  Further, the lever 34 provided on the card edge connector 14 is used to suppress relative displacement between the housing 30 and the housing 16. Specifically, the housing fitting portion 84 has a diameter-expanded portion 88 that increases in diameter as it moves away from the outer peripheral surface 30b. The outer peripheral surface 88a of the enlarged diameter portion 88 has a tapered shape that is separated from the circuit board 12 in the height direction as the distance from the center of the housing fitting portion 84 increases in the depth direction. Accordingly, when the corner portion of the base portion 82b of the lever fitting portion 82 comes into contact with the outer peripheral surface 88a of the enlarged diameter portion 88 of the housing fitting portion 84 due to the rotation operation of the lever 34 during assembly, as shown in FIG. Thus, a force (solid arrow in the figure) acts on the lever 34 in a direction orthogonal to the outer peripheral surface 88a. This force has a component in the height direction. Therefore, in the height direction, a force that presses the lever 34 toward the circuit board 12 (insertion space 36) acts. The pressing force is generated by the pair of fitting portions 80 that sandwich the circuit board 12 in the height direction. As described above, rattling between the housing 30 (card edge connector 14) and the housing 16 can be suppressed at least in the height direction. Therefore, even if the harness 100 connected to the terminal 32 swings due to vehicle vibration in a state where the electronic device 10 is assembled to the vehicle, the housing 30 is suppressed from being displaced with respect to the housing 16. As a result, the housing 30 is prevented from rotating around the circuit board 12 and from being translated in the height direction. Therefore, it is possible to reduce the possibility of problems such as damage or deformation of the terminal 32, short circuit due to peeled plating dust, change in contact resistance between the terminal 32 and the electrode 22 due to biasing force change, and open (non-contact state). As described above, relative displacement between the housing 30 and the housing 16 can be suppressed, and the electrical connection reliability can be prevented from being lowered. Further, since the outer peripheral surface 88a of the enlarged diameter portion 88 has a tapered shape, the root portion 82b can be fitted (press-fitted) into the enlarged diameter portion 88 as the lever 34 rotates.

  In particular, in this embodiment, since the fitting part 80 is provided on both surfaces 12a and 12b of the circuit board 12 in the height direction, the change in the urging force of the terminal 32 can be effectively suppressed. . That is, it is possible to suppress a change in contact resistance between the terminal 32 and the electrode 22 or an open state.

  Furthermore, in this embodiment, the fitting part 80 is provided in the position where the distance with the center of the insertion space 36 is mutually equal in the height direction and the same position in the depth direction and the width direction. As a result, the center of the insertion space 36 and the center of the circuit board 12 substantially coincide with each other in the height direction, so that the urging force of the terminals 32 positioned on both sides 12a and 12b of the circuit board 12 is substantially Can be equal.

  Moreover, in this embodiment, the lever fitting part 82 has the side parts 82c and 82d, and both side parts 82c are attached to the outer peripheral surface 88a of the enlarged diameter part 88 of the housing fitting part 84 in the assembled state. , 82d come into contact. Also in the width direction, the outer peripheral surface 88a of the enlarged diameter portion 88 has a tapered shape that is separated from the circuit board 12 in the height direction as the distance from the center of the housing fitting portion 84 increases. Accordingly, when the corners of the side portions 82c and 82d in the lever fitting portion 82 come into contact with the outer peripheral surface 88a of the enlarged diameter portion 88 by the rotation operation of the lever 34 during assembly, as shown in FIG. A force (solid arrow in the figure) acts on the portions 82c and 82d in a direction perpendicular to the outer peripheral surface 88a. This force has components opposite in the width direction at both side portions 82c and 82d. Therefore, rattling between the housing 30 (card edge connector 14) and the housing 16 can be suppressed in the width direction.

  By the way, the lever 34 is more easily bent as the formation position of the housing fitting portion 84, and by extension, the fitting portion 80 is farther from the opening periphery of the bag-shaped housing 16 in the depth direction. That is, the effect of suppressing rattling between the housing and the housing is reduced. On the other hand, in the present embodiment, the housing fitting portion 84 and thus the fitting portion 80 are provided on the opening periphery of the bag-shaped housing 16. For this reason, rattling between the housing 30 and the housing 16 can be effectively suppressed.

(Modification)
In the said embodiment, the fitting part 80 showed the example which contacts and mutually fits in the depth direction and the width direction. However, the fitting part 80 should just be what mutually contacts and fits at least in the depth direction. For example, the lever fitting portion 82 may not have the side portions 82c and 82d, and the root portion 82b may be in contact with the outer peripheral surface 88a.

  In the said embodiment, the example which the housing | casing fitting part 84 has the outer peripheral surface 88a of the enlarged diameter part 88 as a taper-shaped site | part was shown. That is, the example which has a taper in the perimeter centering on a height direction was shown. However, it suffices that at least the contact portion of the lever fitting portion 82 has a tapered portion. For example, when the fitting part 80 contacts and fits only in the depth direction, a taper shape may be provided only in a portion of the housing fitting part 84 on the harness 100 side in the depth direction.

  In the above-described embodiment, the example in which the fitting portion 80 is provided at the same position in the depth direction and the width direction and at the same distance from the center of the insertion space 36 in the height direction is shown. However, the positional relationship between the pair of fitting portions 80 is not limited to the above example. What is necessary is just to be provided so that the circuit board 12 may be pinched | interposed in a height direction.

  In the above embodiment, an example in which the pair of fitting portions 80 are provided so as to sandwich the circuit board 12 in the height direction has been described. However, the pair of fitting portions 80 may be provided so as to sandwich the circuit board 12 in the width direction, that is, to be positioned on both side surfaces of the circuit board 12 in the width direction. In this case, rattling between the housing 30 and the housing 16 can be suppressed at least in the width direction.

  In the above-described embodiment, an example in which the housing fitting portion 84 is provided on the opening peripheral edge of the bag-shaped housing 16 has been described. However, the housing fitting portion 84 may be provided at a position away from the opening periphery of the housing 16 in the depth direction.

  Further, the lever 34 is not limited to the above example. At least the projection 52 as the action point is located on one end side with respect to the center in the longitudinal direction of each plate portion 46, 48, and the through hole 54 functioning as a fulcrum is closer to the other end than the projection 52 The distance between the through hole 54 and the protrusion 52 may be set shorter than the distance between the portion serving as the power point and the through hole 54.

(Second Embodiment)
In the present embodiment, the description of the parts common to the electronic device 10 shown in the above embodiment is omitted. In 1st Embodiment, the case fitting part 84 made the taper shape among the lever fitting parts 82 and the case fitting parts 84 was shown.

  On the other hand, the present embodiment is characterized in that the lever fitting portion 82 has a tapered shape. Also in the example shown in FIGS. 13 and 14, the pair of fitting portions 80 are provided so as to sandwich the circuit board 12 in the height direction. Further, as shown in FIG. 14, the housing fitting portion 84 includes a shaft portion 92 erected along the height direction from the outer peripheral surface of the cylindrical portion 62 of the first case 60, and a tip end of the shaft portion 92. The extending portion 94 extends toward the harness 100 in the depth direction and is disposed opposite to the outer peripheral surface of the cylindrical portion 62.

  On the other hand, of the lever fitting portion 82, the contact portion with the housing fitting portion 84 in the depth direction, specifically, the end surface 82f on the fixing portion 66 side in the depth direction is the shaft portion 92 in the depth direction. As the distance from the center increases, the taper shape increases away from the circuit board 12 in the height direction.

  The end surface 82f having a tapered shape of the lever fitting portion 82 is an extended portion 94 of the housing fitting portion 84, specifically, an end surface along the height direction constituting the extended portion 94 and a lower surface facing the cylinder portion 62. A part of the contact portion enters the gap between the extension portion and the facing portion, while being in contact with the corner portion.

  Next, the effect of the above configuration will be described.

  At the time of assembly, when the end surface 82f of the lever fitting portion 82 comes into contact with the corner portion of the extending portion 94 of the housing fitting portion 84 by the rotation operation of the lever 34, as shown in FIG. A force (solid arrow in the figure) acts in a direction perpendicular to the end face 82f. This force has a component in the height direction and toward the circuit board. Therefore, in the height direction, a force that presses the lever 34 toward the circuit board 12 (insertion space 36) acts. The pressing force is generated by the pair of fitting portions 80 that sandwich the circuit board 12 in the height direction. As described above, rattling between the housing 30 (card edge connector 14) and the housing 16 can be suppressed at least in the height direction. Further, since the end surface 82f of the lever fitting portion 82 has a tapered shape, the lever fitting portion 82 can be fitted (press-fitted) into the housing fitting portion 84 as the lever 34 rotates.

  Although description is omitted, also in the configuration shown in the present embodiment, the various configurations shown in the first embodiment and its modifications can be adopted. And the effect similar to 1st Embodiment can be show | played.

(Modification)
In the above embodiment, the height direction of the end portion 82f, which is the contact portion with the housing fitting portion 84 in the depth direction, of the lever fitting portion 82 is further away from the center of the shaft portion 92 in the depth direction. In FIG. 2, the taper shape is away from the circuit board 12. And the example which suppresses rattling of the housing 30 (card edge connector 14) and the housing | casing 16 in a height direction by the force which presses the lever 34 to the circuit board 12 side (insertion space 36 side) is shown. It was. On the other hand, in the example shown in FIGS. 15 and 16, the end surface 82f of the lever fitting portion 82 has a tapered shape that approaches the circuit board 12 in the height direction as the end surface 82f is further away from the center of the shaft portion 92 in the depth direction. ing. Moreover, the housing | casing fitting part 84 has comprised the column shape, and the corner | angular part of this columnar protrusion end surface 84a and the side surface 84b is a contact part with the lever in the depth direction. In such a fitting portion 80, when the end surface 82f of the lever fitting portion 82 comes into contact with the corner portion of the housing fitting portion 84 by the rotation operation of the lever 34 during assembly, as shown in FIG. A force (solid arrow in the figure) acts on the lever 34 in a direction perpendicular to the end face 82f. This force has a component in the height direction and opposite to the circuit board. Therefore, in the height direction, a force that pushes the lever 34 to the circuit board 12 (opposite to the insertion space 36 acts). This pushing and spreading force causes a pair of fittings that sandwich the circuit board 12 in the height direction. Occurring at the joint 80. As described above, rattling between the housing 30 (card edge connector 14) and the housing 16 can be suppressed at least in the height direction.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

  In the present embodiment, an example of the electronic device 10 having a non-waterproof structure is shown. However, the present invention can also be applied to a waterproof electronic device 10. For example, a rubber member is formed between the outer peripheral surface 30b and the inner surface of the housing 16 (first case 60) so as to surround the outer peripheral surface 30b of the housing 30 and at the position where the fitting portion 80 is formed in the depth direction. Alternatively, a sealing member (for example, an O-ring) may be disposed. In this case, the portion of the seal member immediately below the fitting portion 80 can be compressed by the fitting portion 80. That is, the sealing performance can be improved.

  In the present embodiment, the case 16 includes the first case 60 having the cylindrical portion 62 and the bag-like second case 64. However, the configuration of the housing 16 is not limited to the above example. For example, the housing | casing 16 may be comprised only from one member which makes a bag shape. In that case, if there is the protective wall 72, tall electronic components are caught and the circuit board 12 cannot be inserted into the back side of the housing 16. Therefore, it is preferable that the protective wall 72 is not provided or the protective wall 72 is provided with a sufficient slit width so as not to hit the electronic component.

  In this embodiment, the circuit board 12 has the electrodes 22 on both surfaces 12a and 12b, and the circuit board 12 is held by the terminals 32 arranged on both surfaces. However, it is also possible to employ a configuration in which the electrode 22 is provided only on one surface of the circuit board 12 and the terminal 32 is disposed only on the surface side on which the electrode 22 is formed. For example, in order to fix the circuit board 12, the other surface side of the circuit board 12 may be supported by a support portion provided integrally with the housing 30.

DESCRIPTION OF SYMBOLS 10 ... Electronic device, 12 ... Circuit board, 14 ... Card edge connector, 16 ... Case, 22 ... Electrode, 30 ... Housing, 32 ... Terminal, 34 ... · Lever, 36 ··· Insertion space, 42 ··· Supporting portion, 44 ··· Projection portion, 44a ··· Contact portion, 52 ··· Projection portion (operation point portion), and 54 ··· Through hole (Fulcrum part), 60 ... 1st case, 64 ... 2nd case, 74 ... receiving part, 80 ... fitting part, 82 ... lever fitting part, 84 ... housing Body fitting part, 100 ... wire harness (harness)

Claims (9)

A circuit board provided with a plurality of electrodes on at least one of both surfaces at one end; and
A housing having an insertion space in which one end portion of the circuit board is inserted and arranged, and a member that is held in the housing and is provided so as to be spring deformable to electrically connect the electrode and the harness, A protrusion that protrudes into the insertion space, the protrusion including a contact portion that contacts the electrode, the contact portion corresponding to a depth direction of the insertion space and a thickness direction of the circuit board; A card edge connector having a plurality of terminals arranged along a width direction perpendicular to both directions of the height direction of the insertion space;
It has a bag shape and has a fixing portion for fixing the circuit board inside, and one end of the circuit board fixed to the fixing portion is inserted and arranged in the insertion space of the housing, and the electrode is a terminal. A housing for housing at least a part of the housing including the circuit board and the insertion space in an internal space in a state of being in contact with
The card edge connector is provided at one end side in the longitudinal direction of the card edge connector, and is provided at a position closer to the other end in the longitudinal direction than the action point portion. And a fulcrum portion functioning as a fulcrum supported by the outer peripheral surface so as to be rotatable along the outer peripheral surface excluding the front end surface of the housing and the back surface opposite to the front end surface. And having a lever for assisting an insertion force for inserting the circuit board into the insertion space by a rotational operation,
The housing has a receiving part for the action point part to function as an action point,
The housing and the lever have a fitting portion that fits in contact with each other at least in the depth direction in a state where the rotation operation of the lever for inserting the circuit board into the insertion space is completed. And
A pair of the fitting portions are provided so as to sandwich the circuit board in one direction orthogonal to the depth direction,
The fitting portion of the housing protrudes from the outer surface of the facing portion facing the outer peripheral surface of the housing in the housing,
The fitting portion of the lever is provided at a portion opposite to the action point portion with respect to the fulcrum portion,
One of the contact portion with the lever in the depth direction in the fitting portion of the housing and the contact portion with the housing in the depth direction in the fitting portion of the lever is the one direction and the depth. An electronic device having a tapered shape inclined with respect to a direction.   The electronic device according to claim 1, wherein the fitting portions are provided on both surfaces of the circuit board in the height direction. The electrodes are provided on both sides of the circuit board,
The plurality of terminals, corresponding to the electrodes, have a terminal protruding from one wall surface in the height direction constituting the insertion space, and a terminal protruding from the wall surface facing the one wall surface. ,
The fitting portion is provided at the same position in the depth direction and the width direction, and at a position where the distance from the center of the insertion space is equal to each other in the height direction. 3. The electronic device according to 2.   The electronic device according to claim 1, wherein the fitting portion is provided on each side surface of the circuit board in the width direction.   The contact portion with the lever in the depth direction in the fitting portion of the casing is tapered away from the circuit board in the one direction as the distance from the center of the fitting portion of the casing in the depth direction is increased. The electronic device according to claim 1, wherein the electronic device has a shape. The fitting portion of the housing has a shaft portion that stands up from the outer surface of the facing portion of the housing, and an extending portion that extends from the shaft portion and is disposed to face the outer surface of the facing portion,
The contact portion with the housing in the depth direction in the fitting portion of the lever has a tapered shape that is farther from the circuit board in the one direction as it is farther from the center of the shaft portion in the depth direction. ,
The taper-shaped portion of the lever is in contact with the extended portion of the housing, and a part of the portion enters a gap between the extended portion and the facing portion. The electronic device according to any one of claims 1 to 4. The fitting portion of the housing has a columnar shape, and a corner portion between the columnar protruding end surface and the side surface is a contact portion with the lever in the depth direction,
The contact portion with the housing in the depth direction in the fitting portion of the lever is tapered such that the distance from the center of the fitting portion of the housing in the depth direction approaches the circuit board in the one direction. The electronic device according to claim 1, wherein the electronic device is configured as follows. The fitting portion of the lever is provided on both sides in the orthogonal direction so as to sandwich the fitting portion of the housing in an orthogonal direction orthogonal to both the one direction and the depth direction.
The housing and the lever fitting portion are in contact with each other on both sides in the orthogonal direction across the fitting portion of the housing,
The fitting portion of the casing and the lever has a shape in which the contact portion in the depth direction is replaced with the orthogonal direction as the contact portion in the orthogonal direction. The electronic device according to claim 1.   The electronic device according to claim 1, wherein the fitting portion of the casing is provided on an opening peripheral edge of the bag-shaped casing.

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