JP2007227824A - Substrate housing case - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a substrate housing case capable of holding a substrate while putting it in a predetermined position. <P>SOLUTION: In the substrate housing case, guides 4 for guiding the movement of a substrate are provided on two confronted inner lateral sides 3, and a pair of holding members 8, 9 for crimping and holding the substrate are provided on an end face 5 in a direction where the substrate is inserted. An interval between confronted portions of the pair of holding members 8, 9 is smaller than the thickness of the substrate, one of the confronted portions is a plane, and the other has a protruding shape. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a substrate housing.

  A configuration in which a printed wiring board on which various electronic components are mounted is accommodated in a case is employed. When the printed wiring board is accommodated in the case, the board may vibrate (rattles occur) unless the board is fixed. Generally, the case is provided with a guide for guiding movement when the printed wiring board is inserted, and this guide also plays a role of holding the printed wiring board and preventing vibration.

  However, when a case containing a printed wiring board is mounted on a vehicle and used, it vibrates violently, unlike when it is used in a stationary state. Therefore, holding the board only with a guide cannot sufficiently prevent vibration. . For this reason, especially in the case of in-vehicle use, it is necessary to hold not only the guide but also other holding members. Therefore, a wiring board housing case is disclosed in which a holding member is provided on the end surface of the case, and the printed wiring board can be held in a state where the printed wiring board is held so as to prevent vibration (see, for example, Patent Document 1).

In the wiring board housing case of Patent Document 1, a protrusion is formed on the inner back surface of the case body, and a protrusion is formed on the protrusion. Each protrusion has a triangular prism shape, and is formed so that apexes face each other. In Patent Document 1, when a printed wiring board is inserted into the case body, the printed wiring board that has reached the inner back surface collapses each protrusion of the protruding portion by its insertion end and enters between the protruding portions. That is, the printed wiring board is sandwiched from both sides with each protrusion being crushed and deformed. With this configuration, the substrate is held so as to prevent the printed wiring board from rattling in the vertical direction (perpendicular to the substrate surface).
JP 2001-15961 A

  However, when this board is inserted and accommodated while crushing both protrusions sandwiched from both sides of the printed wiring board, the contact position with the protrusion changes depending on the insertion position of the printed wiring board, so the amount of crushing of each protrusion Is not constant. For this reason, the position of the printed wiring board in the case (position in the direction perpendicular to the board surface) differs for each case. Therefore, the conventional method has a problem that the placement accuracy of the printed wiring board is low and it is difficult to place the board at a predetermined position.

  This problem causes the following problems. For example, when a printed wiring board is connected to an external electronic device, a connector provided on the printed wiring board is exposed from the opening of the case and connected to the electronic device. However, the opening of the case needs to be approximately the same size as the connector, and there is almost no gap. For this reason, if the position of the printed wiring board is shifted in the direction perpendicular to the board surface, the position of the connector is also shifted in the same direction, making it difficult to expose the connector from the opening. In addition, when the positional relationship between the external electronic device and the case is determined, the printed wiring board may be displaced, and the connector may be displaced, thereby making it difficult to connect to the electronic device.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a substrate housing that can place and hold a substrate in a predetermined position.

  When the substrate is housed in the housing, if both of the pair of holding members protrude, the substrate is inserted while crushing both the protrusions, so that it is difficult to make the arrangement position of the substrate constant. In the present invention, since the opposing part of the holding member has one side as a flat surface and the other protrudes, the substrate moves along the flat surface, and is held in a state where only the protruding holding member is crushed. We paid attention to the fact that the substrate can be held in a fixed position.

  For this purpose, the substrate housing case of the present invention is provided with a guide portion that guides the movement of the substrate on the two opposing inner side surfaces, and a pair of holdings that hold the substrate between the terminal surfaces in the direction of inserting the substrate. A substrate housing case provided with a member, wherein the pair of holding members has an interval between opposed portions smaller than the thickness of the substrate, one of the opposed portions is a flat surface, and the other is a protruding shape. It is characterized by.

  According to the above configuration, when the substrate is inserted into the substrate housing case, the substrate is guided by the guide portion provided on the inner surface of the case and moves within the case. And the board | substrate which moved to the terminal surface of a housing | casing is clamped and hold | maintained between a pair of holding members provided in the terminal surface. Here, since the distance between the opposing portions of the pair of holding members is smaller than the thickness of the substrate, the substrate contacts each holding member during insertion. In addition, since each of the holding members has a flat surface on one side and a protruding shape on the other side, the substrate in contact with the holding member moves along the flat surface while smashing the protruding holding member. Inserted. That is, the substrate moves while crushing only the protruding holding member. As a result, the substrate can be arranged with reference to the planar position of the holding member, and the substrate can be arranged at a predetermined position. The crushing of the holding member means that the holding member is crushed and deformed.

  In the substrate housing case of the present invention, the end portion of the holding member whose opposing portion is a flat surface is located upstream of the end portion of the holding member whose protruding portion is a protruding shape in the direction in which the substrate is inserted. Preferably it is located.

  According to the above-described configuration, when the substrate is inserted between the holding members, the substrate first comes into contact with the end of the holding member where the opposing portion is a flat surface, and then the opposing portion is the protrusion-shaped holding member. Touch the end. As a result, the substrate comes into contact with the holding member whose opposing portion is a flat surface first, so that the substrate can be easily inserted along the flat surface, and the substrate can be disposed with reference to the flat surface.

  According to the present invention, the opposing portions of the pair of holding members that hold the substrate have a structure in which one is a flat surface and the other is protruded, so that the substrate can be disposed at a predetermined position.

  An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing a schematic configuration of a case body 1 (substrate housing case), and FIG. 2 is a perspective view showing a schematic configuration of a lid 2. The case body 1 and the lid 2 can be attached to each other, and the lid 2 is attached to the case body 1 after the substrate is inserted into the case body 1. In addition, the kind of board | substrate is not limited, It can apply to various board | substrates, such as a printed wiring board.

  As shown in FIG. 1, the case main body 1 has a substantially rectangular parallelepiped shape. In addition, the case body 1 has a space in which one surface is open and the substrate can be accommodated therein. The substrate is inserted from the opening and accommodated in the case body 1.

  FIG. 3 is a cross-sectional view of the case body 1 as viewed from the direction of the opening. As shown in FIGS. 1 and 3, the case main body 1 includes a guide portion 4 that guides the movement of the substrate to two opposing inner side surfaces 3. In addition, the case body 1 includes a holding unit 6 that holds and holds the substrate on the end surface 5 in the direction in which the substrate is inserted, and a support unit 7 that engages and supports the substrate.

  The guide portion 4 guides the movement of the substrate, and is extended on both side surfaces 3 of the case body 1 in the insertion direction of the substrate. The guide portions 4 are provided at intervals wider than the thickness of the substrate, and the substrate is guided by this groove portion. Therefore, the substrate moves while being guided by the groove when the end portion enters the groove of the guide portion 4.

  The depth of the groove of this guide part 4 should just be provided to such an extent that it can guide a board | substrate. Further, the width of the groove in the thickness direction of the substrate is larger than the thickness of the substrate, and the width of the groove becomes narrower from the opening portion of the case body 1 toward the end surface 5. As described above, by increasing the width of the groove in the opening portion, the substrate can be easily inserted.

  The holding portion 6 has a pair of holding members including a first holding member 8 and a second holding member 9. Here, the first holding member 8 and the second holding member 9 will be specifically described. FIG. 4 is an enlarged perspective view of the holding members 8 and 9, and FIG. 5 is a cross-sectional view of the holding members 8 and 9.

  As shown in FIGS. 4 and 5, the first holding member 8 and the second holding member 9 have contact portions 8a and 9a that come into contact with and sandwich the substrate, and each of the contact portions 8a and 9a has the contact portions 8a and 9a. It is provided so as to face each other.

  Further, the contact portion 8a of the first holding member 8 (a portion facing the second holding member 9) is a flat surface and has an inclined surface at an end thereof. That is, the part which clamps a board | substrate is a plane, and the direction in which a board | substrate is inserted is an inclined surface. For this reason, when the inserted substrate comes into contact with the inclined surface, the substrate proceeds along the inclined surface, and after reaching the plane, proceeds on the plane.

  On the other hand, the contact portion 9a of the second holding member 9 (part facing the first holding member 8) has a protruding shape and has a shape protruding toward the first holding member 8. . Specifically, the contact portion 9 a of the second holding member 9 has a so-called triangular shape in which the width gradually decreases toward the first holding member 8.

  The second holding member 9 also has an inclined surface at the end of the contact portion 9a. As described above, by providing the inclined surfaces on both the first holding member 8 and the second holding member 9, it becomes easy to draw the substrate between the holding members 8 and 9.

  Further, the first holding member 8 and the second holding member 9 are configured such that the interval between the opposing portions of the holding members 8 and 9 (the distance between the closest portions of the contact portions 8a and 9a) is sandwiched between the substrates. It arrange | positions so that it may become smaller than the thickness of. Moreover, the said space | interval is smaller than the width | variety of the groove | channel of the guide part 4 in the thickness direction of a board | substrate. Each of the contact portions 8a and 9a is located inside the end portion of the groove of the guide portion 4 in the thickness direction of the substrate. Thereby, when the substrate is inserted, the substrate comes into contact with the first holding member 8 and the second holding member 9.

  The first holding member 8 is provided so as to be positioned in the direction in which the case main body 1 opens than the second holding member 9. In other words, the end of the first holding member 8 is provided at a position upstream of the end of the second holding member 9 in the direction in which the substrate is inserted.

  The shape of the second holding member 9 is not particularly limited, and may be any shape that can be easily crushed as compared to the first holding member 8 (a shape that allows the substrate to proceed while being crushed). This is because, as will be described later, when the substrate is inserted, the substrate is inserted while the second holding member 9 is crushed. Such a shape is a protruding shape in which a portion facing the first holding member 8 has a protruding portion, and examples thereof include a triangular cross-sectional shape, a cross-sectional trapezoidal shape, a cross-sectional wedge shape, and a semicircular cross-sectional shape.

  The support portion 7 is a semi-cylindrical convex portion provided on the terminal surface 5 of the case body 1 and extending in a direction perpendicular to the substrate surface. As shown in FIG. 3, two support portions 7 are provided on the end surface 5 of the case body 1.

  Each support portion 7 provided in the case main body 1 is provided on a terminal surface 5 in the vicinity of both side surfaces 3 of the case main body 1. On the other hand, the substrate has a concave portion in a portion corresponding to each of the support portions 7, and the substrate can be supported by engaging the convex portion and the concave portion when the substrate is accommodated. ing.

  As shown in FIG. 2, a holding portion 6, a support portion 7, and an opening portion 11 are provided on the inner surface of the lid 2 that faces the end surface 5. The holding portion 6 provided on the lid 2 has a first holding member 8 and a second holding member 9, and each holding member is provided on the case main body 1. It is the same composition as. When the lid 2 is attached to the case main body 1, the substrate is sandwiched between the holding members 8 and 9 on the lid 2 side. That is, also on the lid 2 side, the substrate is held in the same configuration as the holding by the holding portion 6 of the case body 1.

  The support portion 7 provided on the lid 2 is provided near the center in the horizontal direction of the substrate. The support portion 7 of the lid 2 is also a convex portion having the same configuration as the support portion 7 provided in the case main body 1. The substrate also has a concave portion in the portion that engages with the support portion 7 on the lid 2 side, and the convex portion on the lid 2 side also engages with the concave portion of the substrate when the substrate is accommodated.

  The opening 11 is an opening for exposing an external connection member such as a connector mounted on the substrate. When the board is accommodated, the connector or the like is exposed from the opening 11 and connected to the outside.

  Next, a structure in which the case main body 1 having the above structure holds the substrate will be described. FIG. 6 is a cross-sectional view showing a schematic configuration after the substrate 10 is inserted into the case body 1 and accommodated. As shown in FIG. 6, the substrate 10 is sandwiched and held between the first holding member 8 and the second holding member 9. The substrate 10 is placed on the planar contact portion 8a and is held in a state in which a part of the protruding contact portion 9a is crushed (a state in which the second holding member 9 is bitten). Yes.

  With this configuration, the substrate can be reliably held in the vertical direction (perpendicular to the substrate surface), and the substrate can be prevented from vibrating in the same direction. Further, since the substrate is placed on the planar contact portion 8a, the position of the substrate surface in the vertical direction can be made constant. That is, the substrate can be arranged at a predetermined position.

  FIG. 7 is a plan view showing a schematic configuration after the substrate 10 is inserted and accommodated in the case body 1 and the lid 2 is attached. As shown in FIG. 7, in the substrate 10, the convex portions of the support portions 7 respectively provided on the case body 1 and the lid 2 are engaged with the concave portions of the substrate 10. In addition, description of the holding member 6 is abbreviate | omitted in FIG.

  With this configuration, the substrate 10 can be fixed at three points. Further, the fulcrum of the substrate 10 is a large triangle. For this reason, it can prevent that the board | substrate 10 rotates in the horizontal direction with respect to a board | substrate surface, and can make the rotation tolerance of a board | substrate plane high. In order to further increase the rotation resistance of the substrate plane, the substrate to be accommodated may be fixed at three or more points. The greater the number of points to be fixed, the higher the rotation resistance.

  In addition, it is preferable that the lid | cover 2 is mounted | worn with the curved state in which both ends are located in the case main body 1 side rather than the center part. By mounting the lid 2 in this way, the force with which the lid 2 presses the substrate can be increased, so that the substrate can be held more reliably.

  In this way, by holding the substrate using both the holding unit 6 and the support unit 7, it is possible to prevent both the vertical rotation (vibration) and the horizontal rotation (vibration) of the substrate surface. become.

  The case body 1 can hold a substrate and is formed using a material that can be crushed when the substrate is inserted. As such a material, for example, a resin is used. The main body case 1 can be manufactured by injection molding using a mold or the like. In this case, a single material is generally used. That is, since each holding member is made of the same material, the ease of crushing can be changed by making the shapes different from each other.

  In addition, a plurality of materials may be used by using two or more molds. In this case, the materials of the holding members can be different. Therefore, the shape of each holding member is changed to the above-described shape, and if the materials are different, the ease of crushing of each holding member can be further changed.

  Next, a method for inserting the substrate 10 into the case body 1 will be described. FIG. 8 is a side view showing a process of inserting the substrate 10 into the case main body 1.

  As shown in FIG. 8A, first, the substrate 10 is inserted along the guide portion 4 from the opening portion of the case body 1. Further, as described above, the end portion of the first holding member 8 is located upstream of the end portion of the second holding member 9 in the direction in which the substrate 10 is inserted. For this reason, as shown in FIG. 8B, the substrate 10 first contacts the first holding member 8 and rises along the inclined surface of the holding member 8.

  The substrate 10 raised along the inclined surface is further pushed in along the plane of the first holding member 8. Since the distance between the opposing portions of the holding members 8 and 9 is smaller than the thickness of the substrate 10, the substrate 10 contacts the second holding member 9.

  Next, as shown in FIG. 8C, the substrate 10 is inserted while crushing the contact portion 9 a of the second holding member 9, and is sandwiched between the first holding member 8 and the second holding member 9. . In other words, the substrate 10 is inserted on the plane without crushing the first holding member 8, crushing only the second holding member 9, and held between the holding members 8 and 9.

  Thereafter, the lid 2 is attached to the case body 1, and the substrate 10 is sandwiched between the holding members 6 provided on the lid 2, and the convex portions of the support portions 7 provided on the case body 1 and the lid 2 and the substrate 10. The substrate 10 is accommodated in the case body 1 by engaging the concave portion of the substrate and supporting the substrate 10.

  As described above, when the substrate 10 is inserted into the case main body 1, the substrate 10 enters the case main body 1 while being guided by the guide portion 4. And when it reaches the end surface 5, it is held by the holding portion 6, and is supported by each support portion 7 by mounting the lid 2.

  In this method, since the substrate is inserted while only the protruding holding member is crushed, the substrate 10 can be arranged based on the plane position of the holding member, and the substrate 10 can be arranged at a predetermined position. it can.

  The board housing case composed of the case body 1 and the lid 2 can be used for various electronic devices when the board is a printed wiring board on which an electronic component such as an IC or an electric element is mounted. . In addition, the substrate housing can prevent vibrations in both the vertical direction and the horizontal direction with respect to the substrate surface, and therefore can be suitably used particularly for in-vehicle electronic devices.

  The holding portion includes a pair of holding members, and holds the substrate inserted between the holding members. The pair of holding members has an interval between the opposing portions of the substrate. The substrate holder is smaller than the thickness, and one of the opposing portions is a flat surface and the other is a protruding shape. Even if this substrate holder is used, the substrate can be arranged at a predetermined position as described above.

  Further, in this substrate holder, the end portion of the holding member whose opposing portion is a flat surface is positioned upstream of the end portion of the holding member having a protruding shape in the direction in which the substrate is inserted. It may be a configuration. In this case, it becomes easy to insert the substrate along a plane.

  In addition, the method of holding the substrate includes a pair of holding members that are provided with guide portions that guide the movement of the substrate on two opposing inner side surfaces, and that hold the substrate between the terminal surfaces in the direction of inserting the substrate. The substrate holding method is to hold the substrate by inserting the substrate into the substrate housing case provided with the substrate and sandwiching the substrate between the holding members, and the pair of holding members has an interval between the opposing portions of the substrate. The substrate holding method is smaller than the thickness and one of the opposing portions is a flat surface and the other has a protruding shape, and the substrate is inserted while crushing the protruding holding member while moving on the flat surface. .

  According to this method, the opposing portions are held by sandwiching the substrate between a pair of holding members, one of which is a flat surface and the other is a protruding shape. Further, the substrate moves on a plane and is inserted while crushing the protruding holding member. Therefore, since the substrate is inserted while only one of the holding members is crushed, the substrate can be sandwiched and the substrate can be disposed with reference to the plane.

  Further, in this substrate holding method, the end portion of the holding member in which the facing portion is a flat surface is located upstream of the end portion of the holding member having the protruding portion in the protruding shape in the facing portion. And when inserting a board | substrate between the said holding members, after making a board | substrate contact the holding member whose opposing part is a plane, the opposing part is a method of making a board | substrate contact the protrusion-shaped holding member, Also good. With this method, it becomes easy to insert the substrate along a plane.

  Moreover, the said vehicle-mounted electronic device can be manufactured by inserting and hold | maintaining the printed wiring board which mounted the electronic component in the above-mentioned board | substrate accommodating housing | casing.

It is a perspective view which shows schematic structure of the case main body of this embodiment. It is a perspective view which shows schematic structure of the lid | cover of this embodiment. It is sectional drawing which shows schematic structure of the case main body of this embodiment. It is the perspective view which expanded the holding member of this embodiment. It is sectional drawing to which the holding member of this embodiment was expanded. It is sectional drawing which shows schematic structure after inserting the board | substrate of this embodiment into a case main body, and accommodating. It is a top view which shows schematic structure after inserting the board | substrate of this embodiment into a case main body, and accommodating. (A)-(c) is a side view of a case main body which shows the process of inserting the board | substrate of this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case main body 2 Lid 3 Inner side surface 4 Guide part 5 Termination surface 6 Holding part 7 Support part 8 1st holding member 8a Contact part 9 2nd holding member 9a Contact part 10 Board | substrate

Claims (3)

A substrate housing case in which a guide portion for guiding the movement of a substrate is provided on two opposing inner side surfaces, and a pair of holding members for holding and holding the substrate on a terminal surface in a direction in which the substrate is inserted is provided. ,
The pair of holding members have a space between opposing portions smaller than the thickness of the substrate, one of the opposing portions is a flat surface, and the other is a protruding shape. The end portion of the holding member whose opposing portion is a flat surface is located upstream of the end portion of the protruding holding member in the direction in which the substrate is inserted. 2. The substrate housing case according to 1. An in-vehicle electronic device provided with a board housing housing containing a printed wiring board on which electronic components are mounted,
The board housing case is provided with guide portions for guiding the movement of the printed wiring board on two opposing inner side surfaces, and holds the board by holding it on the end face in the direction of inserting the printed wiring board. A pair of holding members are provided,
The pair of holding members is an in-vehicle electronic device characterized in that the distance between the facing portions is smaller than the thickness of the printed wiring board, one of the facing portions is a flat surface and the other is a protruding shape.