JP2013110042A - Housing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a housing for a card edge connector capable of easily arranging a circuit board while restraining intrusion of foreign matters.SOLUTION: A cylinder part of a first case constituting a housing has a wall projecting from an inner wall and partially narrowing an internal space. The wall has a first wall opposed to one face of the circuit board, and a second wall opposed to a rear face. The opposed face of the first wall has an inclined face whose outside end in a depth direction is nearer the second wall than an end on a deep side in the depth direction, and the opposed face of the second wall has an inclined face whose end on a deep side in the depth direction is nearer the first wall than an outside end in the depth direction. On the inclined faces of the first and second walls, a distance D1 between the outside end in the depth direction on the inclined face of the first wall and the deep side end in the depth direction of the inclined face of the second wall along a height direction is minimum at a distance between the opposed face of the first wall and the opposed face of the second wall along the height direction, longer than thickness T1 of the circuit board, and shorter than a minimum value D2 of an opposite distance of the inclined faces in a direction orthogonal to the inclined faces.

Description

  The present invention relates to a housing for a card edge connector that constitutes an electronic device together with a circuit board and a card edge connector.

  Conventionally, as disclosed in Patent Document 1, a housing for a card edge connector that constitutes an electronic device together with a circuit board and a card edge connector is known. In the card edge connector, the circuit board itself serves as a male terminal, and the end of the circuit board is provided on the end surface of the circuit board by inserting it into the insertion space of the housing constituting the card edge connector. The electrode and the contact portion of the terminal projecting from the housing into the insertion space come into contact with each other to achieve electrical conduction. The card edge connector case includes a card including an insertion space in a state in which one end of the circuit board is inserted and disposed in the insertion space of the card edge connector and the electrode of the circuit board is in contact with the terminal. A part of the edge connector and the circuit board are formed in a bag shape so as to be accommodated in the internal space.

JP 2011-28994 A

  In the card edge connector, the circuit board is inserted into the insertion space of the housing by inserting the card edge connector into the internal space of the housing from the front end surface side where the insertion space opens while the circuit board is accommodated in the housing. The terminal is electrically connected to the electrode. Therefore, until the card edge connector is inserted, foreign matter is likely to enter the internal space of the housing, and there is a possibility that a problem such as a short circuit between electronic components mounted on the circuit board may occur.

  On the other hand, as a technique not conventionally known, it is also conceivable to suppress the intrusion of foreign matter into the internal space by providing the casing with a wall portion protruding from the bag-shaped inner wall. However, the narrower the passage area (space) of the circuit board in the wall in order to enhance the effect of suppressing the entry of foreign matter, the more difficult the circuit board passes through the wall.

  In view of the above problems, an object of the present invention is to provide a case for a card edge connector that can easily arrange a circuit board while suppressing entry of foreign matter.

In order to achieve the above object, the invention according to claim 1
One end of the circuit board is inserted into the insertion space of the card edge connector including a housing having an insertion space into which one end of the circuit board is inserted, and a terminal held in the housing and protruding into the insertion space. A bag-shaped housing for accommodating at least a part of the card edge connector including the insertion space and the circuit board in the internal space in a state where the end portion is inserted and the electrode of the circuit board is in contact with the terminal. ,
A first case having a cylindrical portion formed in a cylindrical shape whose both ends are open so as to cover the outer peripheral surface of the housing; a second case which is assembled to the first case and forms an internal space together with the first case; Have
The cylindrical portion of the first case is provided so as to protrude from the inner wall so as to be positioned between the leading end surface of the insertion space in the housing and the mounting area of the electronic component on the circuit board in the depth direction of the internal space. , Having a wall that partially narrows the interior space,
The wall portion has a first wall portion facing one surface of the circuit board in a height direction orthogonal to the depth direction, and a second wall portion facing the back surface opposite to the one surface of the circuit board,
The facing surface of the first wall portion facing the circuit board has an inclined surface that is closer to the second wall portion in the height direction than the end portion in the depth direction on the outer side in the depth direction,
The surface facing the circuit board in the second wall portion has an inclined surface closer to the first wall portion in the height direction than the end portion on the depth direction outer side on the depth direction outer side,
The inclined surface of the first wall portion and the inclined surface of the second wall portion are an end portion on the outer side in the depth direction on the inclined surface of the first wall portion, and an end on the far side in the depth direction on the inclined surface of the second wall portion. The distance D1 along the height direction with respect to the portion is the smallest in the distance along the height direction between the facing surface of the first wall portion and the facing surface of the second wall portion, and the distance D1 is the thickness of the circuit board. Longer than the length T1 and provided to be shorter than the minimum value D2 of the facing distance between the inclined surface of the first wall portion and the inclined surface of the second wall portion in the direction orthogonal to the inclined surface,
In the height direction, the center of the end in the depth direction on the inclined surface of the first wall and the end on the back in the depth direction of the inclined surface of the second wall, and one end of the circuit board It has a fixing portion for fixing the opposite end portion of the circuit board so that the center of the thickness at the opposite end portion (hereinafter referred to as the opposite end portion of the circuit board) coincides.

  According to this, since the housing has a wall portion that partially narrows the internal space, intrusion of foreign matter deeper in the depth direction than the wall portion with the circuit board inserted into the housing. Can be suppressed. That is, it is possible to suppress the occurrence of defects such as a short circuit in the electronic component that is located on the deeper side in the depth direction than the wall portion.

  By the way, when placing the circuit board in the internal space of the housing, one end of the circuit board on which the electrode is formed is deeper than the wall so that it can be inserted into the insertion space of the card edge connector. The mounting area of the electronic component on which the electronic component is mounted and the end portion fixed by the fixing portion are arranged on the far side in the depth direction from the wall portion. When the casing is composed of only one member, the circuit board is inserted into the internal space from the open end of the bag-shaped casing. In this case, the circuit board is inserted between the first wall portion and the second wall portion. It is necessary to arrange it through the inner space in the depth direction from the wall portion in the inner space. Therefore, the wall portion must be provided so that the electronic component can pass through, and the effect of suppressing foreign matter is weakened. On the other hand, in this invention, a housing | casing consists of two members, the 1st case which has a cylinder part in which the wall part was provided, and a 2nd case. For this reason, when arranging the circuit board, from the opening end side opposite to the opening end on the side that forms the opening end of the housing in the cylindrical portion of the first case, between the first wall portion and the second wall portion. The circuit board can be inserted into the space. Accordingly, the space between the first wall portion and the second wall portion passes through the space where the electronic component is not mounted, such as one end where the electrode is formed, and it is necessary to pass the electronic component. Therefore, the space between the first wall portion and the second wall portion can be set narrow. That is, it is possible to enhance the effect of suppressing the entry of foreign matter into the depth direction depth side from the wall portion.

  Further, in the present invention, the opposing surface of the first wall portion has an inclined surface whose end portion on the outer side in the depth direction is closer to the second wall portion than the end portion on the back side in the depth direction, The opposite surface has an inclined surface closer to the first wall than the end on the depth direction outer side than the end on the outer side in the depth direction. And distance D1 which is the minimum distance between the opposing surfaces along a height direction is made shorter than minimum value D2 of the opposing distance of an inclined surface. Further, the distance D1 is longer than the thickness T1 of the circuit board. Therefore, by making the one surface and the back surface of the circuit board parallel to the portion of the inclined surface that forms the minimum value D2 of the facing distance, the space of the minimum value D2 of the facing distance that is longer than the distance D1 is formed in the circuit. The board is inserted, and the circuit board can be easily arranged. In the present invention, when the circuit board is disposed in the housing, the electrode formation region of the circuit board passes through the space between the first wall portion and the second wall portion as described above, so that the electrode There is a possibility that the electrode may be damaged or a short circuit may occur due to debris peeled off due to contact with the wall portion. Therefore, when at least the electrode formation region of the circuit board passes through the space having the minimum value D2 of the opposing distance, one surface and the back surface of the circuit board are parallel to the portion of the inclined surface that forms the minimum value D2 of the opposing distance. It should be so that.

  On the other hand, in a state where the circuit board is arranged in the internal space, ideally, since the one surface and the back surface of the circuit board are arranged so as to be substantially perpendicular to the height direction, it is further to the back than the wall portion. The ease of entry of foreign matter depends on the distance D1, which is the minimum distance between the opposing surfaces along the height direction. In the present invention, as described above, since the distance D1 is shorter than the minimum value D2 of the facing distance between the inclined surfaces, it is possible to suppress the intrusion of the foreign matter in the depth direction deeper than the wall portion. As described above, according to the present invention, it is possible to arrange the circuit board while suppressing the intrusion of the foreign matter into the depth direction rear side of the wall portion.

  In the present invention, the fixing portion includes the center of the end portion on the outer side in the depth direction on the inclined surface of the first wall portion and the end portion on the inner side in the depth direction on the inclined surface of the second wall portion, and the circuit board. It is provided to fix the opposite end of the circuit board so that the center of thickness at the opposite end coincides. For this reason, even if the circuit board is inclined in the height direction with the fixed portion as a fulcrum and contacts the inclined surface of the first wall portion or the second wall portion, the end portion on the outer side in the depth direction on the inclined surface of the first wall portion Or it will contact either of the edge part of the depth direction back | inner side in the inclined surface of a 2nd wall part. Therefore, since the circuit board does not contact the entire surface of any one of the inclined surfaces, it is possible to suppress the intrusion of foreign matters to the depth direction depth side rather than the wall portion.

As claimed in claim 2,
The inclined surface of the first wall portion and the inclined surface of the second wall portion are the end portions in the depth direction outer side of the inclined surface of the second wall portion in the depth direction outer side of the inclined surface of the first wall portion. It is preferable that they are provided so as not to overlap each other in the depth direction while being located outside in the depth direction.

  According to this, the minimum value D2 of the facing distance between the inclined surfaces can be increased while keeping the distance D1 constant as compared with the configuration in which at least a part overlaps in the depth direction. Therefore, it is possible to easily arrange the circuit board with respect to the housing while suppressing foreign matters. In other words, the electrode formation region of the circuit board can easily pass through the space between the first wall portion and the second wall portion.

As claimed in claim 3,
The inclined surface of the first wall portion and the inclined surface of the second wall portion are the end portions in the depth direction outer side of the inclined surface of the second wall portion in the depth direction outer side of the inclined surface of the first wall portion. Alternatively, at least a portion may overlap in the depth direction while being positioned outside in the depth direction.

  According to this, the length of the inner space on the back side in the depth direction from the wall portion is made constant while the length of the casing in the depth direction is made constant as compared with the configuration in which they are provided so as not to overlap each other in the depth direction. The volume can be increased, that is, the mounting area of the electronic component on the circuit board can be increased. In other words, if the mounting area of the electronic component is fixed in the circuit board, the physique of the housing can be reduced in the depth direction.

  Furthermore, as described in claim 4, the inclined surface of the first wall portion and the inclined surface of the second wall portion may completely coincide with each other in the depth direction. According to this, for example, the effect of downsizing the physique of the housing in the depth direction can be enhanced.

As claimed in claim 5,
In the width direction orthogonal to both the depth direction and the height direction, the distance D1 in at least a part of the wall portion is made shorter than the dimension D3 in the height direction of the insertion space opened in the front end surface of the housing. And good.

  According to this, the wall portion has a function of limiting the inclination of the circuit board. For this reason, it is possible to facilitate insertion of the circuit board into the insertion space when inserting one end of the circuit board into the insertion space of the housing while inserting the card edge connector into the internal space of the housing. .

As claimed in claim 6,
In the width direction, the first wall portion and the second wall portion have an inclined surface over the entire portion facing the circuit board, and at least a part of the portion excluding the portion corresponding to the electrode formation region of the circuit board ( Hereinafter, the portion corresponding to the non-electrode formation region) may be a portion having a distance D1 smaller than the dimension D3, and the portion corresponding to the electrode formation region may be a portion having a distance D1 larger than the dimension D3.

  According to this, since the distance D1 is longer in the portion corresponding to the electrode formation region than in the portion corresponding to the non-electrode formation region of the circuit board, it is easier to insert the circuit board into the insertion space and The electrode can be made difficult to contact.

As claimed in claim 7,
In the wall portion, at least one inclined surface of the first wall portion and the second wall portion in the portion having the distance D1 smaller than the dimension D3 is the inclined surface of the first wall portion and the first surface in the portion having the distance D1 larger than the dimension D3. It is good to be provided in the depth direction depth side rather than the inclined surface of the two wall portions.

  According to this, since the inclined surface of the portion corresponding to the non-electrode forming region is located on the deeper side in the depth direction than the inclined surface of the portion corresponding to the electrode forming region, the inclined portion of the portion corresponding to the non-electrode forming region is The circuit board is guided by the surface. Therefore, the effect of making it difficult for the electrode to come into contact with the wall portion can be enhanced.

As claimed in claim 8,
The circuit board has electrodes on one side and the back side,
The card edge connector has, as terminals, a terminal protruding from a wall surface facing the one surface of the circuit board in the housing, and a terminal protruding from a wall surface facing the back surface of the circuit board in the housing. The circuit board is held by
The first wall portion is located only in one internal space defined by a center that equally divides the internal space in the height direction,
A 2nd wall part is located only in the internal space opposite to the opposing surface of a 1st wall part among the internal spaces divided by the center of an internal space in a height direction,
The center of the outer edge in the depth direction on the inclined surface of the first wall and the inner edge of the second wall in the depth direction equally divides the internal space of the housing in the height direction. It is good also as a structure which corresponds to the center to do.

  When the case has a fixing part that fixes the portion between both ends of the circuit board in addition to the fixing part that fixes the opposite end of the circuit board, the depth direction can be obtained with the circuit board arranged in the case. The position of the circuit board in the height direction is determined by a plurality of fixing portions provided in FIG. Therefore, if the center of the thickness of the circuit board deviates from the center that equally divides the internal space of the housing in the height direction due to variations in the thickness of the circuit board or the like, the terminals and the back surface located on one surface of the circuit board There is a difference in the amount of spring deformation between the terminals located above. That is, the electrical connection state between the terminal and the electrode varies. On the other hand, in the present invention, the circuit board is held by the fixing portion that fixes the opposite end of the circuit board and the terminals located on both sides of the circuit board. For this reason, before the card edge connector is inserted, the opposite end of the circuit board is fixed by the fixing part, and the inclination is limited by the wall part, and the position in the height direction is completely determined. It has not been. Therefore, when inserting the card edge connector into the internal space of the housing and inserting one end of the circuit board into the insertion space of the housing, by the reaction force due to the spring deformation of the terminals located on both sides of the circuit board, The center of the thickness of the circuit board can be made coincident with the center in the height direction of the insertion space of the card edge connector. In other words, the amount of spring deformation is made substantially equal between the terminal located on one surface of the circuit board and the terminal located on the back surface, thereby suppressing variations in the electrical connection state between the terminal and the electrode. Can do.

As the case, for example, as described in claim 9,
The second case has a bag shape with one end opened, and is provided with a fixing portion.
A configuration in which the opening end portion of the second case is connected to one end portion of the cylindrical portion of the first case can be employed.

  In this configuration, the circuit board is fixed to the fixing portion while the circuit board is housed inside the bag shape of the second case, and in this state, the opening end side opposite to the opening end forming the opening end of the casing in the cylindrical portion By connecting the first case to the opening end of the second case so that the circuit board can be inserted through the housing, a housing in which the circuit board is accommodated in the internal space can be obtained.

It is sectional drawing in an electrode formation area which shows schematic structure of the electronic device containing the housing | casing which concerns on this embodiment. It is sectional drawing in the non-electrode formation area which shows schematic structure of the electronic device containing the housing | casing which concerns on this embodiment. It is sectional drawing which follows the III-III line of FIG. 1, FIG. 1 is a cross-sectional view taken along the line II of FIG. FIG. 2 is a cross-sectional view taken along the line II-II in FIG. It is sectional drawing which follows the IV-IV line of FIG. 1, FIG. 4 corresponds to the II line in FIG. 3, and the II-II line in FIG. 4 corresponds to the II-II line in FIG. It is sectional drawing which shows schematic structure of a 1st case among housing | casings. FIG. 5 shows a portion corresponding to the electrode formation region. It is sectional drawing which shows schematic structure of a 1st case among housing | casings. FIG. 6 shows a portion corresponding to the non-electrode formation region. It is sectional drawing for demonstrating the assembly | attachment of the 1st case to a 2nd case. FIG. 7 shows a portion corresponding to the electrode formation region. It is sectional drawing for demonstrating the assembly | attachment of the 1st case to a 2nd case. FIG. 8 shows a portion corresponding to the non-electrode formation region. It is sectional drawing which shows the state which assembled | attached the 1st case to the 2nd case. FIG. 9 shows a portion corresponding to the electrode formation region. It is sectional drawing which shows the state which assembled | attached the 1st case to the 2nd case. FIG. 10 shows a portion corresponding to the non-electrode formation region. It is sectional drawing which shows the example in which inclined surfaces completely overlap in the depth direction. It is sectional drawing which shows the example in which inclined surfaces partially overlap in the depth direction. It is sectional drawing which shows the example in which inclined surfaces are shifted | deviated and provided without overlapping in the depth direction. It is sectional drawing which shows insertion of a card edge connector when the distance D1 is larger than the dimension D3. For convenience, the second case is not shown. It is sectional drawing of a structure with which a housing | casing is provided with the fixing | fixed part which fixes the part between the both ends of a circuit board in a depth direction. It is sectional drawing at the time of inserting a card edge connector in the electronic device which concerns on this 1st Embodiment. It is sectional drawing of the state which inserted the card edge connector. It is sectional drawing which shows the modification of a wall part, and respond | corresponds to FIG. It is sectional drawing which shows the modification of a wall part, and respond | corresponds to FIG. It is sectional drawing which shows the modification of a housing | casing, and has shown the middle of the 2nd case being assembled | attached to a 1st case.

  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. In addition, the depth direction of the bag-shaped housing, in other words, the insertion / extraction direction of the circuit board with respect to the card edge connector is simply referred to as the depth direction. Further, the height direction of the casing orthogonal to the depth direction, in other words, the thickness direction of the circuit board is simply indicated as the height direction. Further, the width direction of the casing 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. Further, in the depth direction, the side close to the bottom of the internal space of the casing is defined as the back side in the depth direction, and the side close to the open end of the internal space is defined as the outside in the depth direction.

  First, a schematic configuration of an electronic device including a housing according to the present embodiment will be described.

  As shown in FIGS. 1 to 4, the electronic device 10 includes a circuit board 12, a card edge connector 14, a housing 16, and a sealing material 18. That is, the electronic device 10 is a waterproof electronic device 10. Such an electronic device 10 is suitable for a waterproof electronic control device used as an engine ECU (Electric Control Unit) of a vehicle, for example.

  The circuit board 12 is electrically connected to an insulating base material 20 made of an electrically insulating material such as a resin, 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).

  The electrode 22 is formed at one end in the depth direction on the circuit board 12 (insulating base material 20). Moreover, it forms on at least one surface 12a 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 FIGS. 1 and 4, electrodes 22 are formed on both the one surface 12 a and the back surface 12 b, respectively.

  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 46 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 46.

  The card edge connector 14 is a relay member that electrically connects a harness (not shown) and a circuit formed on the circuit board 12, and includes a housing 30 made of an electrically insulating material as a main part, and a plurality of pieces held by the housing 30. Terminal 32.

  The housing 30 is formed by, for example, injection molding of resin, and has an insertion space 34 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 FIGS. 1 and 2, the insertion space 34 is open to the front end surface 30 a of the housing 30, and is in accordance with the thickness of the circuit board 12 to accommodate one end of the circuit board 12. And a predetermined depth corresponding to the insertion depth of the circuit board 12. In the present embodiment, the housing 30 has a storage space (not shown) for storing the harness, and when the harness is inserted into the storage space, the terminal 32 and the harness are electrically connected. In addition, the terminal 32 of the structure integrated with the harness is also employable. Further, a fitting portion (not shown) with the housing 16 is provided on the outer peripheral surface of the housing 30.

  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. 1, the terminal 32 includes a holding portion held by the housing 30, and a protruding portion that extends from the holding portion and protrudes into the insertion space 34 so as to be spring-deformable. Then, a part of the protrusion (so-called contact) comes into contact with the electrode 22 in a state where the protrusion is elastically deformed. Therefore, a stable contact pressure with the electrode 22 of the circuit board 12 can be ensured. The contacts 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, of the wall surfaces constituting the insertion space 34, the protruding portions of the terminals 32 protrude into the insertion space 34 from the wall surfaces facing in the height direction, and the terminals located on both sides of the circuit board 12. The circuit board 12 is fixed by a reaction force (biasing force) due to the elastic deformation of 32. Further, the protruding portions of the terminals 32 located on both sides of the circuit board 12 pass through the center of the insertion space 34 in the height direction and are arranged in line symmetry with respect to the imaginary line along the depth direction.

  The housing 16 has the insertion space 34 in a state where one end of the circuit board 12 is inserted and disposed in the insertion space 34 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 addition, a first case 40 having a cylindrical part 42 formed in a cylindrical shape whose both ends open so as to cover the outer peripheral surface of the housing 30, and the first case 40 and the casing 16 together with the first case 40 are assembled. 2nd case 44 which comprises. The casing 16 is a member having a main characteristic portion in the electronic device 10 shown in the present embodiment. Details thereof will be described later. The cylindrical portion 42 of the first case 40 is provided with a fitting portion (not shown) with the housing 30 constituting the card edge connector 14. A fitting portion (not shown) is also provided between the first case 40 and the second case 44.

  The housing 16 is a fixing portion 46 for fixing an end portion (hereinafter referred to as an opposite end portion) opposite to one end portion of the circuit board 12 on which the electrode 22 is formed as a fixing portion of the circuit board 12. At least. In the present embodiment, the housing 16 has only the fixing part 46 as a fixing part of the circuit board 12, and the circuit board 12 is formed by the fixing part 46 and the terminals 32 located on both sides of the circuit board 12. Fixed (held). In addition, the fixing portion 46 has, in the height direction, a center of an apex portion 52c of an inclined surface 52b of the first wall portion 52 and an apex portion 54c of the inclined surface 54b of the second wall portion 54, which will be described later, It is provided so that the center of the thickness at the opposite end coincides. In the present embodiment, a fixing portion 46 is provided in the second case 44 constituting the housing 16. In addition, the fixing portion 46 is provided at the substantially central position of the circuit board 12 in the width direction, and the fixing portion 46 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 46 for supporting the 12b.

  The sealing material 18 is an accommodation space for the circuit board 12 that is configured by the internal space of the housing 16 and the insertion space 34 of the housing 30 of the card edge connector 14 in a state where the card edge connector 14 is inserted into the housing 16. Is hermetically sealed to prevent water and the like from entering the housing space. As shown in FIGS. 1 and 2, the sealing material 18 is disposed between opposing portions of the housing 30 constituting the card edge connector 14 and the cylindrical portion 42 of the first case 40 constituting the housing 16. Further, the first case 40 and the second case 44 are also disposed between opposing portions. In the present embodiment, only the cylindrical portion 42 of the first case 40 of the housing 16 faces the outer peripheral surface of the housing 30 that constitutes the card edge connector 14. That is, the seal parts of the first case 40 and the housing 30 are not connected to the seal parts of the first case 40 and the second case 44. Thus, since the branch part (three-pronged part) of the sealing material 18 does not exist, airtightness can be improved compared with what has the structure of the housing | casing 16 in which a branch part exists. Note that a rubber ring member (for example, an O-ring) is used as the sealing material 18 disposed between the facing portions of the housing 30 and the cylindrical portion 42 of the first case 40 in consideration of insertion and removal of the card edge connector 14 and the like. Can be adopted. On the other hand, as the sealing material 18 disposed between the facing portions of the first case 40 and the second case 44, the above-described rubber ring member, curable adhesive, or the like can be employed. As the curable adhesive, for example, a silicon-based moisture curable adhesive can be used. In the present embodiment, the seal member 18 disposed between the facing portions of the first case 40 and the second case 44 also employs a rubber ring member.

  Next, the structure of the characteristic part in the housing | casing 16 is demonstrated using FIGS.

  The cylindrical portion 42 of the first case 40 has a wall portion 48 that protrudes from the inner wall and partially narrows the internal space of the housing 16. Further, the portion where the internal space is narrowed by the wall portion 48 is a slit 50 through which the circuit board 12 is inserted when the circuit board 12 is accommodated in the internal space of the housing 16. The wall portion 48 is provided so as to be positioned between the front end surface 30a of the housing 30 and the electronic component mounting region on the circuit board 12 in the depth direction.

  The wall 48 has a first wall 52 that faces the one surface 12 a of the circuit board 12 and a second wall 54 that faces the back surface 12 b of the circuit board 12 in the height direction. The first wall 52 is a surface 52a facing the one surface 12a of the circuit board 12, and an end 52c (hereinafter referred to as a vertex 52c) on the outer side in the depth direction is higher than an end on the far side in the depth direction. It has the inclined surface 52b close | similar to the 2nd wall part 54 in a direction. On the other hand, the second wall portion 54 is a surface facing the back surface 12b of the circuit board 12 such that an end portion 54c on the back side in the depth direction (hereinafter referred to as a vertex portion 54c) is higher than an end portion on the outer side in the depth direction. It has an inclined surface 54b close to the first wall portion 52 in the vertical direction.

  Here, the distance along the height direction between the apex portion 52c of the inclined surface 52b of the first wall portion 52 and the apex portion 54c of the inclined surface 54b of the second wall portion 54 is defined as D1. Further, the thickness of the circuit board 12 (insulating base material 20) is T1, and the minimum value of the facing distance between the inclined surface 52b and the inclined surface 54b in the direction orthogonal to the inclined surfaces 52b and 54b is D2. Then, the distance D1 is minimum in the distance along the height direction between the facing surface 52a of the first wall portion 52 and the facing surface 54a of the second wall portion 54, and is longer than the thickness T1 of the circuit board. The first wall portion 52 and the second wall portion 54 are provided so as to be shorter than the minimum value D2 of the facing distance between the inclined surfaces 52b and 54b.

  In the present embodiment, as shown in FIG. 3, a wall portion 48 is provided over the entire inner wall of the cylindrical portion 42 whose cross section perpendicular to the depth direction is substantially rectangular. The wall 48 is integrally formed as a part of the first case 40. In FIG. 3, the portion inside the two-dot chain line is the wall portion 48. The inclined surface 52b of the first wall portion 52 and the inclined surface 54b of the second wall portion 54 each have a constant amount of change in the height direction with respect to the depth direction. Furthermore, the inclined surfaces 52b and 54b are parallel to each other. For this reason, in this embodiment, the opposing distance is the minimum value D2 over the entire area of the inclined surfaces 52b and 54b. In addition, as shown in FIG. 3, in the width direction, the first wall 52 and the second wall 54 corresponding to the formation region of the electrode 22 and the first wall corresponding to the non-electrode formation regions at both ends in the width direction. The structure is different between the portion 52 and the second wall portion 54.

  As shown in FIGS. 1 and 5, the portions of the first wall portion 52 and the second wall portion 54 corresponding to the formation region of the electrode 22 have only inclined surfaces 52b and 54b as opposed surfaces 52a and 54a, respectively. ing. Further, in the depth direction, the inclined surfaces 52b and 54b completely overlap each other, and the apex portion 52c of the first wall portion 52 is positioned outside the apex portion 54c of the second wall portion 54 in the depth direction. doing. That is, the vertex portion 52c of the first wall portion 52 coincides with the end portion on the outer side in the depth direction of the second wall portion 54, and the vertex portion 54c of the second wall portion 54 is in the depth direction of the first wall portion 52. It matches the end on the far side. Then, in the width direction, in the portions of the first wall portion 52 and the second wall portion 54 corresponding to the formation region of the electrode 22, the distance D <b> 1 is equal to the facing surface 52 a of the first wall portion 52 as shown in FIG. 5. The minimum distance along the height direction of the second wall portion 54 with the facing surface 54a is longer than the thickness T1 of the circuit board and shorter than the minimum value D2 of the facing distance between the inclined surfaces 52b and 54b. It has become.

  On the other hand, as shown in FIGS. 2 and 6, the portions of the first wall portion 52 and the second wall portion 54 corresponding to the non-electrode forming region have inclined surfaces 52b and 54b as opposed surfaces 52a and 54a, respectively. Also, parallel surfaces 52d and 54d parallel to the depth direction are provided. Further, in the depth direction, the inclined surfaces 52 b and 54 b are provided so as to be partially overlapped with each other, and the vertex portion 52 c of the first wall portion 52 is more than the vertex portion 54 c of the second wall portion 54. Is also located outside in the depth direction. Specifically, the opposing surfaces 52a and 54a completely overlap each other, and in the first wall portion 52, the parallel surface 52d is located on the outer side in the depth direction, and the inclined surface 52b is located on the far side. In the 2nd wall part 54, the inclined surface 54b is located in the depth direction outer side, and the parallel surface 54d is located in the back | inner side. In addition, the end portion of the second wall portion 54 on the outer side in the depth direction is located on the outer side in the depth direction with respect to the apex portion 52 c of the first wall portion 52. In the width direction, in the first wall portion 52 and the second wall portion 54 corresponding to the non-electrode forming region, the distance D1 is equal to the opposing surface 52a of the first wall portion 52 and the first wall portion 52 as shown in FIG. 2 The minimum distance along the height direction of the wall portion 54 with the facing surface 54a, which is longer than the thickness T1 of the circuit board, and shorter than the minimum value D2 of the facing distance between the inclined surfaces 52b and 54b. ing. Furthermore, in this embodiment, as shown in FIGS. 3, 5, and 6, the first wall portion 52 and the second wall portion 54 corresponding to the non-electrode formation region correspond to the formation region of the electrode 22. The distance D <b> 1 is shorter than the first wall portion 52 and the second wall portion 54.

  Thus, in the present embodiment, the inclined surface 52b is provided on the opposing surface 52a of the first wall portion 52 and the inclined surface 54b is provided on the opposing surface 54a of the second wall portion 54 in the entire width direction. As shown in FIGS. 1 to 3, the distance D <b> 1 is the insertion space that opens to the front end surface 30 a of the housing 30 at the first wall portion 52 and the second wall portion 54 corresponding to the non-electrode forming region. 34 is shorter than the dimension D3 in the height direction. Further, the first wall portion 52 and the second wall portion 54 corresponding to the formation region of the electrode 22 are longer than the dimension D3.

  Furthermore, in the present embodiment, as shown in FIGS. 5 and 6, only the one inner space in which the first wall portion 52 is partitioned by the center line CL1 that equally divides the inner space of the housing 16 in the height direction. Is located. The second wall portion 54 is located only in the internal space opposite to the first wall portion 52 among the internal spaces defined by the center line CL1. And the center of the height direction of the vertex part 52c of the inclined surface 52b of the 1st wall part 52 and the vertex part 54c of the inclined surface 54b of the 2nd wall part 54 corresponds with the centerline CL1.

  Next, the procedure for arranging the circuit board 12 in the housing 16 will be described with reference to FIGS.

  As shown in FIGS. 7 and 8, the circuit board 12 is fixed by the fixing portion 46 while the circuit board 12 is housed in the second case 44. Next, the first case 40 is assembled to the second case 44. In this assembling, the one end of the cylindrical portion 42 of the first case 40, more specifically, the opening end opposite to the opening end into which the card edge connector 14 is inserted, the mating surface with the second case 44 in advance. A rubber ring member is disposed as the seal material 18.

  Then, the circuit board 12 is inserted through the slit 50 of the wall 48, and the opening end where the sealing material 18 is disposed is brought close to the second case 44. Here, when at least the formation region of the electrode 22 of the circuit board 12 passes through the slit 50 of the wall 48, the portion of the inclined surface 52 b, 54 b of the circuit board 12 with respect to the portion that forms the minimum value D 2 of the opposing distance. The first case 40 is tilted and brought closer to the second case 44 so that the one surface 12a and the back surface 12b are parallel to each other. In this embodiment, when the formation region of the electrode 22 in the circuit board 12 passes through the opposing surfaces 52a and 52b of at least a portion corresponding to the formation region of the electrode 22 in the first wall portion 52 and the second wall portion 54. In addition, the inclined surfaces 52b and 54b may be parallel to the one surface 12a and the back surface 12b of the circuit board 12.

  Then, after at least the formation region of the electrode 22 of the circuit board 12 passes through the opposing surfaces 52a and 54a of the first wall portion 52 and the second wall portion 54 constituting the wall portion 48, the extending direction of the cylindrical portion 42 is deep. The inclination of the first case 40 is returned so as to be parallel to the vertical direction, and the first case 40 is assembled to the second case 44 as shown in FIGS. Thereby, the housing 16 is configured, and the circuit board 12 is accommodated in the internal space of the housing 16. In this state, the parallel surfaces 52d and 54d of the first wall portion 52 and the second wall portion 54 are substantially parallel to the one surface 12a and the back surface 12b of the circuit board 12.

  Then, the card edge connector 14 in which the ring member as the sealing material 18 is arranged on the outer peripheral surface of the housing 30 is inserted into the insertion space 34 so that one end of the circuit board 12 is inserted and arranged in the casing 16. 1 to 4 can be obtained.

  Next, effects of main characteristic portions of the casing 16 and the electronic device 10 according to the present embodiment will be described.

  In this embodiment, the housing | casing 16 has the wall part 48 which narrows the internal space partially. Therefore, intrusion of foreign matter deeper in the depth direction than the wall portion 48 in a state before the circuit board 12 is disposed in the housing 16 and the card edge connector 14 is inserted into the housing 16 is suppressed. Can do. That is, it is possible to suppress the occurrence of defects such as a short circuit in the electronic component of the circuit board 12 located on the deeper side in the depth direction than the wall portion 48.

  By the way, when the circuit board 12 is arranged in the internal space of the housing 16, one end of the circuit board 12 where the electrode 22 is formed can be inserted into the insertion space 34 of the card edge connector 14. It is disposed outside the wall 48 in the depth direction. Further, the mounting area of the electronic component on the circuit board 12 and the end portion fixed by the fixing portion 46 are arranged on the far side in the depth direction from the wall portion 48. When the casing 16 is composed of only one member, the circuit board 12 is inserted into the internal space from the opening end of the casing 16 having a bag shape. In this case, it has to be arranged on the far side in the depth direction from the wall portion 48 through the slit 50 between the first wall portion 52 and the second wall portion 54. Therefore, the wall part 48 must be provided so that electronic components can pass through, and the dimension in the height direction of the slit 50 becomes wide, and the effect of suppressing foreign matter is weakened. On the other hand, in the present embodiment, the casing 16 is composed of two members, a first case 40 having a cylindrical portion 42 provided with a wall portion 48 and a second case 44. For this reason, when the circuit board 12 is arranged, the circuit board 12 can be inserted into the slit 50 of the wall part 48 from the opening end of the cylindrical part 42 of the first case 40 on the second case 44 side. Therefore, the portion that passes through the slit 50 is a region on the circuit board 12 where no electronic component is mounted, such as a region where an electrode is formed. Thereby, the slit 50 can be set narrowly in the height direction, and the effect of suppressing foreign matter intrusion into the depth direction rear side than the wall portion 48 can be enhanced.

  In the present embodiment, inclined surfaces 52b and 54b that are in parallel with each other are provided on at least a part of the opposing surfaces 52a and 54a of the first wall portion 52 and the second wall portion 54, respectively. And the distance D1 along the height direction between the vertex parts 52c and 54c is made shorter than the opposing distance D2 of the inclined surfaces 52b and 54b. Further, the distance D1 is longer than the thickness T1 of the circuit board 12. Therefore, when the first case 40 is assembled to the second case 44, the inclined surfaces 52b and 54b of the first wall portion 52 and the second wall portion 54 are parallel to the one surface 12a and the back surface 12b of the circuit board 12. Then, the circuit board 12 passes through the space of the minimum value D2 of the facing distance longer than the distance D1. Thereby, the circuit board 12 can be easily arranged in the housing 16. In the present embodiment, as described above, the opposing surfaces 52a and 52b of the first wall portion 52 and the second wall portion 54 corresponding to at least the formation region of the electrode 22 are formed on the formation of the electrode 22 on the circuit board 12. When the region passes, the inclined surfaces 52b and 54b are made parallel to the one surface 12a and the back surface 12b of the circuit board 12. Therefore, when the wall part 48 contacts the electrode 22 of the circuit board 12, it can suppress that the electrode 22 is damaged, or a short circuit arises by the debris which peeled.

  Also, in a state before the circuit board 12 is disposed in the internal space of the housing 16 and the card edge connector 14 is inserted into the housing 16, the one surface 12a and the back surface 12b of the circuit substrate 12 are ideally high. Arranged so as to be substantially perpendicular to the vertical direction. Therefore, the ease of entry of foreign matter into the depth direction rear side of the wall portion 48 depends on the distance D1 along the height direction between the vertex portions 52c and 54c. In the present embodiment, since the distance D1 is shorter than the minimum value D2 of the facing distance between the inclined surfaces 52b and 54b, it is possible to suppress the intrusion of foreign matters to the far side in the depth direction from the wall portion 48. As described above, according to the housing 16 and the electronic device 10 according to the present embodiment, the circuit board 12 is arranged in the housing 16 while suppressing the intrusion of foreign matter deeper in the depth direction than the wall portion 48. It can be made easier.

  In the present embodiment, the fixing portion 46 includes the center in the height direction between the apex portion 52c of the inclined surface 52b of the first wall portion 52 and the apex portion 54c of the inclined surface 54b of the second wall portion 54, and the circuit board. The opposite end of the circuit board 12 is provided so as to be fixed so that the center of thickness at the opposite end of 12 coincides. For this reason, even if the circuit board 12 is inclined in the height direction with the fixed portion 46 as a fulcrum and contacts the inclined surface 52b of the first wall portion 52 or the inclined surface 54b of the second wall portion 54, the first wall portion 52 Either the apex portion 52c or the apex portion 54c of the second wall portion 54 comes into contact. Accordingly, since the circuit board 12 does not contact the entire surface of any of the inclined surfaces 52b and 54b, that is, is not parallel to the inclined surfaces 52b and 54b, the foreign substance can enter the depth direction deeper than the wall portion 48. Can be suppressed. Assuming that the circuit board 12 is not warped, in this embodiment, when the circuit board 12 is tilted, the circuit board 12 comes into contact with the wall portion 48 of the portion corresponding to the non-electrode forming region. Specifically, it contacts the end portion on the outer side in the depth direction of the parallel surface 52d of the first wall portion 52 or the apex portion 54c of the inclined surface 54b of the second wall portion. Therefore, even if the circuit board 12 is inclined, it does not come into contact with any one of the inclined surfaces 52b and 54b.

  Next, effects of other characteristic portions of the housing 16 and the electronic device 10 according to the present embodiment will be described.

  Here, the positional relationship and the effect in the depth direction of the inclined surfaces 52b and 54b of the 1st wall part 52 and the 2nd wall part 54 are demonstrated. In FIG. 11, the inclined surface 52 b of the first wall portion 52 and the inclined surface 54 b of the second wall portion 54 completely coincide with each other in the depth direction. In this embodiment, the portion of the wall 48 corresponding to the formation region of the electrode 22 has this arrangement.

  With such an arrangement, if the length of the casing 16 in the depth direction is constant, the inner space on the far side in the depth direction than the wall portion 48 in the casing 16 can be made wider. That is, in the circuit board 12, a mounting area for electronic components can be widened. In other words, if the mounting area of the electronic components on the circuit board 12 is constant, the body size in the depth direction of the housing 16 can be reduced.

  In FIG. 12, the inclination of the first wall portion 52 is performed while the apex portion 52c of the inclined surface 52b of the first wall portion 52 is located on the outer side in the depth direction than the apex portion 54c of the inclined surface 54b of the second wall portion 54. A part of the inclined surface 54b of the surface 52b and the second wall portion 54 overlaps in the depth direction. In the present embodiment, the wall portion 48 corresponding to the non-electrode forming region has this arrangement. With such an arrangement, the physique in the depth direction of the housing 16 becomes larger when the mounting area of the electronic component on the circuit board 12 is fixed as compared with the arrangement shown in FIG. However, the minimum value D2 of the facing distance between the inclined surfaces 52b and 54b can be increased while keeping the distance D1 constant. That is, the circuit board 12 can be easily arranged in the housing 16 while suppressing the intrusion of foreign matter. In other words, the formation region of the electrode 22 of the circuit board 12 can easily pass through the slit 50 of the wall portion 48.

  In addition, in FIG.11 and FIG.12, the example in which at least one part of inclined surface 52b, 54b overlaps was shown. However, as shown in FIG. 13, the apex portion 52 c of the inclined surface 52 b of the first wall portion 52 is positioned on the outer side in the depth direction than the apex portion 54 c of the inclined surface 54 b of the second wall portion 54. The inclined surface 52b of the wall portion 52 and the inclined surface 54b of the second wall portion 54 may be provided so as not to overlap each other in the depth direction. According to this, the minimum value D2 of the facing distance between the inclined surfaces 52b and 54b can be further increased while keeping the distance D1 constant as compared with the configuration in which at least a part of the inclined surfaces 52b and 54b overlap. Therefore, the circuit board 12 can be more easily arranged with respect to the housing 16 while suppressing the entry of foreign matter.

  When the housing 16 has the wall portion 48 as shown in the present embodiment, even if the circuit board 12 is inclined from the center line CL1 in the height direction, the inclination of the circuit board 12 is limited by the wall portion 48. That is, the wall 48 has a function of limiting the inclination of the circuit board 12. For example, as shown in FIG. 14, when the distance D <b> 1 of the wall 48 is longer than the height dimension D <b> 3 of the insertion space 34 that opens to the front end surface 30 a of the housing 30, one end of the circuit board 12 is It is also conceivable that the tip 30 a contacts the housing 30 and is difficult to insert into the insertion space 34. On the other hand, in this embodiment, the distance D1 in at least a part of the wall portion 48 is shorter than the dimension D3 in the width direction. Specifically, the distance D1 is shorter than the dimension D3 in the portion of the wall portion 48 corresponding to both ends in the width direction of the circuit board 12 which is the non-electrode forming region. Therefore, when one end of the circuit board 12 is inserted into the insertion space 34 of the housing 30 while the card edge connector 14 is inserted into the internal space of the housing 16, the circuit board 12 is inserted into the insertion space 34. Can be easier.

  In particular, in the present embodiment, in the width direction, the first wall portion 52 and the second wall portion 54 have inclined surfaces 52b and 54b over the entire area facing the circuit board 12, respectively. A portion corresponding to the non-electrode forming region of the circuit board 12 is a portion having a distance D1 smaller than the dimension D3, and a portion corresponding to the forming region of the electrode 22 is a portion having a distance D1 larger than the dimension D3. . Thus, if a difference is provided in the distance D1, the circuit board 12 will ideally contact the shortest part of the distance D1. Therefore, it is possible to effectively prevent the electrode 22 from contacting the wall portion 48 while making it easy to insert the circuit board 12 into the insertion space 34 of the housing 30.

  Further, in the present embodiment, in the wall portion 48, at least one of the inclined surface 52b of the first wall portion 52 and the inclined surface 54b of the second wall portion 54 in a portion having a distance D1 smaller than the dimension D3 is a distance greater than the dimension D3. It is provided in the depth direction back side rather than the inclined surface 52b of the 1st wall part 52 and the inclined surface 54b of the 2nd wall part 54 in a part with large D1. Specifically, each of the inclined surfaces 52b and 54b in the portion of the wall portion 48 corresponding to the non-electrode forming region is more than the inclined surfaces 52b and 54b in the portion of the wall portion 48 corresponding to the forming region of the electrode 22. It is provided on the back side in the depth direction. For this reason, when the circuit board 12 passes through the slit 50 of the wall portion 48, the circuit board 12 is guided by the inclined surfaces 52b and 54b of the portion corresponding to the non-electrode forming region. Therefore, the electrode 22 can be more effectively suppressed from contacting the wall portion 48.

  By the way, as shown in FIG. 15, in the case where the housing 16 has a fixing portion 56 that fixes a portion between both ends of the circuit board 12 in addition to the fixing portion 46 that fixes the opposite end of the circuit board 12. With the circuit board 12 disposed in the housing 16, the position in the height direction of the circuit board 12 is determined by a plurality of fixing portions 46 and 56 provided in the depth direction. Therefore, the center line CL2 of the thickness of the circuit board 12 is deviated from the center line CL1 due to variations in the thickness of the circuit board 12 (insulating base material 20), variations in the seating surface height of the fixing portion 56, and the like. There is a fear. When such a deviation occurs, a difference occurs in the amount of spring deformation between the terminal 32 located on the one surface 12a of the circuit board 12 and the terminal 32 located on the back surface 12b. That is, the electrical connection state between the terminal 32 and the electrode 22 varies. The center line CL1 substantially coincides with a center line (not shown) in the height direction that equally divides the insertion space 34 of the housing 30 in a state where the card edge connector 14 is assembled to the housing 16. On the other hand, in the present embodiment, the housing 16 has only a fixing portion 46 that fixes the opposite end of the circuit board 12, and terminals that are located on both sides of the fixing portion 46 and the circuit board 12. 32, the circuit board 12 is held. Therefore, in the state before the card edge connector 14 is inserted, the opposite end of the circuit board 12 is fixed by the fixing part 46 and the inclination of the circuit board 12 is limited by the wall part 48, The position is not completely determined. Therefore, as shown in FIG. 16, even if the center lines CL1 and CL2 are shifted in the initial state of inserting the card edge connector 14 into the housing 16, it is caused by the spring deformation of the terminals 32 located on both surfaces of the circuit board 12. With the reaction force, as shown in FIG. 17, the center line CL2 can be made substantially coincident with the center line CL1. That is, the center line CL2 can be made to substantially coincide with a center line (not shown) that equally divides the insertion space 34 of the housing 30. In other words, the amount of spring deformation is made substantially equal between the terminal 32 located on the one surface 12a of the circuit board 12 and the terminal 32 located on the back surface 12b, and the electrical connection state between the terminal 32 and the electrode 22 varies. Can be suppressed. In this embodiment, the 1st wall part 52 is located only in one internal space divided by the centerline CL1 which equally divides the internal space of the housing | casing 16 in a height direction. The second wall portion 54 is located only in the internal space opposite to the first wall portion 52 among the internal spaces defined by the center line CL1. And the center of the height direction of the vertex part 52c of the inclined surface 52b of the 1st wall part 52 and the vertex part 54c of the inclined surface 54b of the 2nd wall part 54 corresponds with the centerline CL1. Therefore, it is possible to make the center line CL2 substantially coincide with the center line CL1.

  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 in which the portions of the wall portions 48 corresponding to both ends of the circuit board 12 that is the non-electrode forming region in the width direction are portions where the distance D1 is shorter than the dimension D3 of the insertion space 34 is shown. . However, for example, as shown in FIG. 18, without providing the electrode 22 at the center portion in the width direction of the circuit board 12, the portion of the wall portion 48 corresponding to both ends in the width direction and the wall portion 48 corresponding to the center in the width direction. This portion may be a portion where the distance D1 is shorter than the dimension D3. Furthermore, as shown in FIG. 19, the wall portion 48 may be provided so that the distance D <b> 1 is a portion shorter than the dimension D <b> 3 of the insertion space 34 in the entire width direction.

  In the present embodiment, an example in which the housing 16 is configured by the first case 40 having the cylindrical portion 42 and the bag-like second case 44 has been described. However, the second case 44 is not limited to a bag shape. For example, in the example shown in FIG. 20, the second case 44 shown in the above embodiment is divided by, for example, the center line CL1, and the portion closer to the first wall portion 52 than the center line CL1 is connected to the cylindrical portion 42. A part of one case 40 is used, and a part on the second wall 54 side is a second case 44. Even when the housing 16 having such a configuration is adopted, the circuit board 12 is inserted into the slit 50 of the wall portion 48 from the opening end side opposite to the opening end forming the opening end of the housing 16 in the cylindrical portion 42. Can be made. Further, the sealing material 18 interposed between the first case 40 and the housing 30 is not connected to the sealing material 18 interposed between the first case 40 and the second case 44. As described above, when the branch portion (three-forked portion) of the sealing material 18 does not exist, airtightness can be improved as compared with the case 16 having the structure of the casing 16 in which the branch portion exists. In the configuration shown in FIG. 20, a silicon-based moisture-curing adhesive is used as the sealing material 18 interposed between the first case 40 and the second case 44.

  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.

  In the present embodiment, the wall portion 48 has inclined surfaces 52b, 54b and parallel surfaces 52d, 54d on a part of the facing surfaces 52a, 54a in the width direction, and only the inclined surfaces 52b, 54b in the remaining portions. showed that. However, the wall portion 48 may have only the inclined surfaces 52b and 52b as the opposed surfaces 52a and 54a in the entire width direction. Moreover, it is good also as a structure which has the inclined surfaces 52b and 54b and the parallel surfaces 52d and 54d as opposing surfaces 52a and 54a in the whole width direction. Furthermore, it is good also as a structure which has an inclination part only in the part of the width direction in the wall part 48, does not have an inclination part in the remaining part, and has only a parallel part. For example, in the configuration shown in the present embodiment, the portion of the wall portion 48 corresponding to the non-electrode forming region has a structure having at least inclined surfaces 52b and 54b, and the portion of the wall portion 48 corresponding to the forming region of the electrode 22 is set. A structure having only parallel surfaces 52d and 54d may be used.

  In the present embodiment, the inclined surface 52b of the first wall portion 52 and the inclined surface 54b of the second wall portion 54 each have an inclination in which the amount of change in the height direction with respect to the depth direction is constant, and the inclined surfaces 52b and 54b. An example is shown in which the two are parallel to each other. However, the inclined surface 52b and the inclined surface 54b may be configured so that the amount of change in the height direction (that is, the inclination) differs from the depth direction. For example, in FIG. 5, by increasing the inclination of the inclined surface 52b, the distance between the slits 50 in the height direction may be increased toward the back in the depth direction.

  Further, as the inclined surfaces 52b and 54b, it is possible to adopt a configuration having an inclination in which the amount of change in the height direction with respect to the depth direction is not constant. For example, it is good also as the inclination from which a variation | change_quantity becomes large, so that it approaches the depth direction back side.

DESCRIPTION OF SYMBOLS 10 ... Electronic device, 12 ... Circuit board, 14 ... Card edge connector, 16 ... Case, 22 ... Electrode, 30 ... Housing, 32 ... Terminal, 34 ... -Insertion space, 40 ... first case, 42 ... cylindrical part, 44 ... second case, 46 ... fixing part, 48 ... wall part, 52 ... first wall part , 52a ... opposing surface, 52b ... inclined surface, 52c ... apex (end in the depth direction), 54 ... second wall, 54a ... opposing surface, 54b ... -Inclined surface, 54c ... apex (end in the depth direction)

Claims (9)

A card edge connector having a housing having an insertion space into which one end of the circuit board is inserted, and a terminal held in the housing and protruding into the insertion space. A bag shape in which at least a part of the card edge connector including the insertion space and the circuit board are accommodated in the internal space in a state where one end is inserted and arranged and the electrode of the circuit board is in contact with the terminal. A housing of
A first case having a cylindrical portion that is formed in a cylindrical shape that opens at both ends so as to cover the outer peripheral surface of the housing, and a second case that is assembled to the first case and forms the internal space together with the first case. A case, and
The cylindrical portion of the first case extends from the inner wall so as to be positioned between the leading end surface of the insertion space in the housing and the mounting area of the electronic component on the circuit board in the depth direction of the internal space. Projectingly provided, having a wall portion that partially narrows the internal space,
The wall portion includes a first wall portion facing one surface of the circuit board and a second wall portion facing a back surface opposite to the one surface of the circuit board in a height direction perpendicular to the depth direction. ,
The surface facing the circuit board in the first wall portion has an inclined surface that is closer to the second wall portion in the height direction than the end portion in the depth direction on the outer side in the depth direction,
The surface facing the circuit board in the second wall portion has an inclined surface that is closer to the first wall portion in the height direction than the end portion in the depth direction outside the end portion in the depth direction,
The inclined surface of the first wall portion and the inclined surface of the second wall portion are the depth direction outer end of the inclined surface of the first wall portion and the depth direction of the inclined surface of the second wall portion. The distance D1 along the height direction with the end on the back side is the minimum in the distance along the height direction between the facing surface of the first wall portion and the facing surface of the second wall portion, and the distance D1 is longer than the thickness T1 of the circuit board and shorter than the minimum value D2 of the facing distance between the inclined surface of the first wall portion and the inclined surface of the second wall portion in the direction orthogonal to the inclined surface. Provided,
In the height direction, the center of the end portion on the outer side in the depth direction on the inclined surface of the first wall portion and the end portion on the rear side in the depth direction on the inclined surface of the second wall portion, and one of the circuit board A housing having a fixing portion for fixing the opposite end portion of the circuit board so that the center of the thickness at the opposite end portion coincides with the center of the thickness.   The inclined surface of the first wall portion and the inclined surface of the second wall portion are such that the outer end in the depth direction of the inclined surface of the first wall portion is the depth direction depth of the inclined surface of the second wall portion. The housing according to claim 1, wherein the casing is provided so as to be located outside in the depth direction with respect to the end portion on the side, and so as not to overlap each other in the depth direction.   The inclined surface of the first wall portion and the inclined surface of the second wall portion are such that the outer end in the depth direction of the inclined surface of the first wall portion is the depth direction depth of the inclined surface of the second wall portion. The casing according to claim 1, wherein at least a part of the casing overlaps in the depth direction while being positioned on the outer side in the depth direction than the end portion on the side.   The casing according to claim 3, wherein the inclined surface of the first wall portion and the inclined surface of the second wall portion completely coincide with each other in the depth direction.   In the width direction orthogonal to both the depth direction and the height direction, the distance D1 in at least a part of the wall portion is larger than the height direction dimension D3 of the insertion space opened in the front end surface of the housing. The casing according to any one of claims 1 to 4, wherein the casing is short.   In the width direction, the first wall portion and the second wall portion have an inclined surface over the entire portion facing the circuit board, and a portion excluding a portion corresponding to an electrode formation region of the circuit board 6. At least a part of the portion is a portion having a distance D1 smaller than the dimension D3, and a portion corresponding to the electrode formation region is a portion having a distance D1 larger than the dimension D3. Enclosure.   In the wall portion, at least one inclined surface of the first wall portion and the second wall portion in the portion having the distance D1 smaller than the dimension D3 is the height of the first wall portion in the portion having the distance D1 larger than the dimension D3. The housing according to claim 6, wherein the housing is provided on a deeper side in the depth direction than the inclined surface and the inclined surface of the second wall portion. The circuit board has the electrodes on one side and the back side,
The card edge connector includes, as the terminals, a terminal protruding from a wall surface facing one surface of the circuit board in the housing, and a terminal protruding from a wall surface facing the back surface of the circuit board in the housing, and these terminals And the circuit board is held by the fixing portion,
The first wall is located only in one internal space defined by a center that equally divides the internal space in the height direction,
The second wall portion is located only in the internal space opposite to the facing surface of the first wall portion among the internal spaces defined by the center of the internal space in the height direction,
The center of the depth direction outer end portion of the inclined surface of the first wall portion and the depth direction rear end portion of the inclined surface of the second wall portion is the internal space of the housing in the height direction. The casing according to claim 1, wherein the casing coincides with a center that equally divides. The second case has a bag shape with one end opened, and the fixing portion is provided.
The housing according to any one of claims 1 to 8, wherein an opening end portion of the second case is connected to one end portion of the cylindrical portion of the first case.

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