JP2019021851A - Board attachment structure to electronic equipment enclosure - Google Patents

Abstract

To provide a board attachment structure to an electronic equipment enclosure capable of facilitating positioning of the board to the electronic equipment enclosure, when inserting the board into the electronic equipment enclosure.SOLUTION: In a board attachment structure to an electronic equipment enclosure 10, the electronic equipment enclosure 10 is provided with a guide rail 21 molded integrally with the inner wall surface of a wall part, and elongating in an insertable direction of a board 90, and includes a face cover 30 insertable from an opening end 11A of the electronic equipment enclosure 10 while holding the board 90 from a direction orthogonal to the insertable direction of the board 90. A guided body 33 to be guided by the guide rail 21 is molded integrally with the face cover 30. The guided body 33 has a board holding part 33a molded integrally at one side of the guided body 33, and holding from the insertion start end to the insertion terminal of the board 90 to the electronic equipment enclosure 10, and a rib 33b molded integrally at the other side of the guided body 33, and being fitted into the guide rail 21 slidably.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a substrate mounting structure to an electronic device casing to which one end is open and a substrate can be inserted and removed from the open end, and the inserted substrate is mounted.

  Conventionally, in this type of electronic device casing, as shown in Patent Document 1, a board such as an extension board is inserted into the electronic device casing while being guided by a guide rail groove in the electronic device casing. Is done. The board has a connector fixed to the insertion start end side to the electronic device casing and a front plate (face cover) fixed to the insertion end side to the electronic device casing. The plate-like face cover fixed to the substrate is configured to close the opening of the electronic device casing when the substrate is accommodated in the electronic device casing.

  Some of the substrates have a connector portion for connecting another module on the insertion end side of the electronic device casing. The connector portion is supported by the face cover. Furthermore, vibrations and shocks may be applied to the electronic device casing. Even in such a case, the face cover is attached to the electronic device casing so that the substrate is sufficiently held in the electronic device casing. A locking mechanism that can be stopped is provided. As described above, in order to support the connector portion by the face cover or to provide a locking mechanism for the face cover, the face cover itself is formed in a box shape (so as to cover the insertion end portion of the board to the electronic device casing). ) Need to be formed.

Japanese Utility Model Publication No. 60-103888

  However, when the face cover is formed in a box shape, the terminal end of the substrate inserted into the electronic device casing is covered with the face cover, so that the portion where the face cover is attached in the electronic device casing, that is, the opening of the electronic device casing A guide rail for guiding the substrate cannot be provided at the end portion. Therefore, there is a problem that the substrate is not positioned with respect to the electronic device casing unless the substrate is inserted to the back side (inside the housing) of the electronic device casing.

  Accordingly, an object of the present invention is to provide a structure for mounting a substrate on an electronic device casing that can easily position the substrate with respect to the electronic device casing when the substrate is inserted into the electronic device casing. .

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
That is, the substrate mounting structure to the electronic device casing of the present invention has one end opened, and the substrate can be inserted and removed from the opening end, and the substrate mounting to the electronic device casing to which the inserted substrate is mounted The electronic device casing has a guide groove formed integrally with an inner wall surface of the wall portion and extending in the insertion / removal direction of the substrate from the opening end side. A substrate holding frame that is inserted and removed from the opening end of the electronic device casing in a state where the substrate is held from a direction orthogonal to the direction, and the substrate holding frame has a guided body guided by the guide groove. The substrate body is integrally formed, the guided body is integrally formed on one side of the guided body, and holds the substrate from the insertion start end to the insertion end of the electronic device casing; The guide groove is formed integrally with the other side of the guide body. And the rib portion to be fitted slidably and has a.
In the above configuration, the rib portion of the guided frame can be fitted and slid from the guide groove on the opening end side of the electronic device casing.

In the substrate mounting structure to the electronic device casing of the present invention, the rib portion is formed from the insertion start end of the substrate held by the substrate holding portion to the electronic device casing from the insertion end. .
In the above configuration, the substrate from the insertion start end to the insertion end to the electronic device casing is guided to the guide groove via the guided body.

  According to the substrate mounting structure to the electronic device casing of the present invention, the guide groove is extended from the opening end side of the electronic device casing, and the rib portion of the guided body is guided to the opening end side of the electronic device casing. Since it can be slid by fitting from the groove, the substrate can be easily positioned with respect to the electronic device casing when the substrate is inserted into the electronic device casing. Further, since the substrate does not hit the electronic device case when the substrate is inserted into the electronic device case, the components mounted on the substrate and the electronic device case itself are not damaged or damaged.

It is a perspective view which shows the board | substrate attachment structure to the electronic device housing | casing which concerns on this invention. It is a perspective view at the time of inserting a board | substrate in an electronic device housing | casing in the board | substrate attachment structure to the electronic device housing | casing which concerns on this invention. It is a front view of the electronic device housing | casing which concerns on this invention. It is a figure of the board | substrate holding frame which concerns on this invention. It is a figure at the time of inserting a board | substrate holding frame with respect to the electronic device housing | casing which concerns on this invention. It is a perspective view at the time of using a fixed reinforcing material in the board | substrate attachment structure to the electronic device housing | casing which concerns on this invention. It is a figure of the fixed reinforcement material which concerns on this invention.

A structure for attaching the substrate 90 to the electronic device casing 10 according to the present invention will be described.
(Electronic device casing 10)
As shown in FIGS. 1 to 3, the electronic device housing 10 is a substantially rectangular housing made of resin having an opening 11 at the front end, and includes a back wall portion 12, an upper wall portion 13, and a lower wall portion. The side wall part 14, the right side wall part 15, and the left side wall part 16 are provided. The electronic device casing 10 is inserted and accommodated in a board 90 such as an expansion board inserted through the opening 11. In the electronic device housing 10, a wall mounting portion 17 for installing the electronic device housing 10 on a wall surface is provided on the back wall portion 12, and a fixing member (not shown) such as a screw is attached to the wall mounting portion 17. Installed on the wall. Further, the electronic device casing 10 includes an engagement member that can be engaged with a support rail (not shown) such as a DIN rail on the back wall portion 12 and is detachably supported on the support rail via the engagement member. It is configured to be. The electronic device housing 10 includes a plurality of receiving portions 20 and guide rails 21 (an example of “guide grooves”) for inserting / removing a plurality of substrates 90 (four substrates 90 in FIG. 1) in the opening 11. And a plurality of connectors 18 that receive a front end 91 that is an insertion start end of the substrate 90.

  The receiving portion 20 includes an upper inner wall surface 13A and a lower inner wall surface 14A (an example of an “inner wall surface”) that face each other in the upper wall portion 13 and the lower wall portion 14 (an example of a “wall portion”) on the opening 11 side. It is a part formed so as to protrude in a substantially concave shape when viewed from the front, and is formed integrally with each of the upper inner wall surface 13A and the lower inner wall surface 14A. The receiving portion 20 is formed at a plurality of locations in parallel along the upper and lower opening ends 11A of the opening portion 11 (four locations on the upper inner wall surface 13A and the lower inner wall surface 14A in FIG. 1). The receiving portion 20 of the upper inner wall surface 13A and the receiving portion 20 of the lower inner wall surface 14A are arranged so that the recessed portions thereof face each other.

  The guide rail 21 is a portion formed into a groove shape on the upper inner wall surface 13A and the lower inner wall surface 14A, and extends from the opening 11 side of the upper inner wall surface 13A and the lower inner wall surface toward the rear wall portion 12 side. Established. A plurality of guide rails 21 are formed on the upper inner wall surface 13A and the lower inner wall surface 14A (in FIG. 1, four locations on each of the upper inner wall surface 13A and the lower inner wall surface 14A) and are arranged in parallel to each other. The guide rail 21 on the upper inner wall surface 13A and the guide rail 21 on the lower inner wall surface 14A are arranged so that their groove-shaped dents face each other. The board 90 is inserted / removed between the concave portions of the guide rail 21 on the upper inner wall surface 13A and the guide rail 21 on the lower inner wall surface 14A.

(Face cover 30)
As shown in FIGS. 2 and 4, the substrate 90 has a rear end portion 92 (to the electronic device casing 10) that is an end portion opposite to the front end portion 91 (starting end of insertion into the electronic device casing 10) side. Is inserted into the electronic device casing 10 while being held by the face cover 30 (an example of a “board holding frame”) from the side of the insertion end. The face cover 30 is a frame for holding the substrate 90 in the electronic device casing 10, and is a frame for inserting and removing the substrate 90 from the opening end 11 </ b> A of the electronic device casing 10. And a claw body 32 and a guided body 33.

  The main body 31 is a main part of the face cover 30 and is constituted by a long member made of resin. The main body 31 is disposed between the upper wall portion 13 and the lower wall portion 14 on the opening 11 side so as to close the opening 11 of the electronic device housing 10 when the face cover 30 is inserted into the electronic device housing 10. Placed in. The main body 31 is configured to support the rear end portion 92 of the substrate 90 and to support a connector portion 95 such as a pin connector provided on the rear end portion 92 side of the substrate 90.

  The claw body 32 is a portion that is locked to the receiving portion 20 of the electronic device casing 10 when the face cover 30 is housed in the electronic device casing 10. The claw body 32 is formed of a resin member formed integrally with the main body 31 at both ends in the longitudinal direction of the main body 31. In other words, the claw bodies 32 are provided at both ends of the face cover 30 in the direction orthogonal to the insertion direction S (insertion / removal direction) of the face cover 30 with respect to the electronic device casing 10.

  The claw body 32 has a free end on one end side and a fixed end formed integrally with the main body 31 on the other end side, and is on the side S in the insertion direction S to the electronic device housing 10 and has a fixed end. And a folded portion is formed between the free ends. Specifically, the claw body 32 is formed in a substantially U shape in a side view, extends in a direction opposite to the insertion direction S to the electronic device housing 10, and an outer member whose distal end in the extending direction is a free end. 32a, an inner member 32b having a fixed end connected to the main body 31 and extending in the insertion direction S to the electronic device casing 10, and a folding member 32c that is a portion that is folded from the inner member 32b to the outer member 32a. And. The lengths of the outer member 32a, the inner member 32b, and the folding member 32c in the width direction (the direction perpendicular to the insertion direction S into the electronic device casing 10) are the lengths of the recesses of the receiving portion 20 of the electronic device casing 10. The length is approximately the same as the width.

  The nail | claw body 32 is elastically deformed in the direction approaching the center side of the face cover 30 (main body 31). Specifically, the claw body 32 is elastic in a direction in which the outer member 32a approaches the inner member 32b with the folded member 32c as a fulcrum by pressing the free end side portion (one end portion of the outer member 32a) of the outer member 32a. Deform. In the face cover 30, the claw bodies 32 provided at both ends of the main body 31 are elastically deformed so that the distance between the one end portions of the outer member 32 a of the claw body 32 is the upper side wall portion of the electronic device casing 10. 13 and the interval between the receiving portions 20 provided on the lower wall portion 14.

  The claw body 32 has a convex locking portion 32d formed integrally with the outer member 32a at the center of the outer surface of the outer member 32a. The locking portion 32 d is a portion that is directly locked by the receiving portion 20 of the electronic device housing 10 when the face cover 30 is housed in the electronic device housing 10, and is inserted into the electronic device housing 10. It is molded by a resin-made protruding member that is inclined to S (the inclined surface faces the insertion direction S to the electronic device casing 10) and has a triangular shape (mountain shape) in side view. The locking portion 32d moves in a direction approaching the inner member 32b by pressing the free end side portion (one end portion of the outer member 32a) of the outer member 32a and elastically deforming the claw body 32, and is received by the receiving portion 20. The lock is released. That is, the free end side portion of the outer member 32a (one end portion of the outer member 32a) is an unlocking portion 32e for releasing the locking of the locking portion 32d by the receiving portion 20, and the face cover 30 is connected to the electronic device. When mounted on the housing 10, the locking portion 32d is unlocked by the receiving portion 20 by operating the locking releasing portion 32e.

When the face cover 30 is attached to the electronic device casing 10, the unlocking portion 32 e is on the opening 11 side of the electronic device casing 10 and protrudes outside the opening end 11 </ b> A of the opening 11. Provided. That is, the lock release portion 32e is provided at a position on the insertion end side (rear end portion 92 side) of the substrate 90 on the opposite side to the insertion start end side (front end portion 91 side) of the substrate 90, and on the opening 11 side. It is configured to be operable from. In this way, the locking release portion 32e is provided on the opening 11 side of the electronic device casing 10 and protrudes outward from the opening end 11A of the opening 11, so that the electronic device casing 10 can be used as a rail or the like. Even if it is fixed, the unlocking portion 32e can be easily operated.
As for the latch release part 32e, the protrusion part 32f is integrally formed with the outer side member 32a on the outer surface and inner surface. The protrusion 32f is a protrusion for reinforcing the locking release part 32e (the free end side of the outer member 32a).

  The guided body 33 supports the upper end portion 93 and the lower end portion 94 of the substrate 90 and is attached to the guide rail 21 of the electronic device casing 10 when the face cover 30 is inserted into and removed from the electronic device casing 10. It is the part to be guided. The guided body 33 is formed of a resin member which is provided in parallel with the claw body 32 at both ends in the longitudinal direction of the main body 31 and is formed integrally with the main body 31.

  The guided body 33 is a long member extending in the insertion direction S from the longitudinal direction of the main body 31 to the electronic device casing 10, and includes an upper end 93 and a lower end of the substrate 90. 94 is configured to cover the whole. One end of the guided body 33 is a free end, and the other end is a fixed end formed integrally with the main body 31.

  The guided body 33 is integrally formed with a substrate holding portion 33a on an inner surface which is one side thereof. The substrate holding portion 33a is a concave long groove portion, and the upper end portion 93 and the lower end portion 94 of the substrate 90 are fitted therein. The substrate holding portion 33a is configured such that the upper end 93 and the lower end 94 of the substrate 90 are moved from the front end 91 side (starting insertion into the electronic device casing 10) to the rear end 92 (from the electronic device casing 10). Is extended along the longitudinal direction of the guided body 33 so as to hold up to the insertion end). That is, the substrate holding part 33a extends along the insertion direction S (insertion / removal direction) of the substrate 90, and holds the substrate 90 from a direction orthogonal to the insertion direction S (insertion / removal direction) of the substrate 90.

  In the guided body 33, a rib portion 33b is integrally formed on the outer surface on the other side. That is, the rib portion 33b is formed on the surface opposite to the surface on which the substrate holding portion 33a is formed. The rib portion 33 b is a long protruding portion protruding in a convex shape, and is slidably fitted into the guide rail 21 of the electronic device housing 10. The rib portion 33 b extends along the longitudinal direction of the guided body 33. That is, the rib portion 33b is inserted into the electronic device casing 10 from the front end portion 91 side (the insertion start end of the electronic device casing 10) to the rear end portion 92 side of the substrate 90 held by the substrate holding portion 33a. (End). The rib portion 33 b is provided by being divided at the central portion of the guided body 33. A locking hole 33c for locking the substrate 90 to the substrate holding portion 33a is provided between the divided rib portions 33b (the central portion of the guided body 33). By hooking the hook portion provided on the substrate 90 into the locking hole 33c, the connection between the substrate 90 and the substrate holding portion 33a is strengthened.

  By forming the guided body 33 in this way, substantially the entire upper end 93 and lower end 94 of the substrate 90 (from the insertion start end to the insertion end of the electronic device housing 10) is guided body 33 ( It is guided to the guide rail 21 via the rib part 33b). Therefore, the effective range of the guide rail 21 with respect to the substrate 90 (guided body 33) is widened, and the substrate 90 can be positioned with respect to the electronic device housing 10 on the opening end 11A side of the electronic device housing 10.

Next, a method for attaching the substrate 90 to the electronic device housing 10 will be described.
As shown in FIGS. 2 and 5A, the substrate 90 with the face cover 30 attached is inserted from the opening end 11 </ b> A of the electronic device housing 10. At this time, the rib portion 33b of the guided body 33 of the face cover 30 is inserted into the guide rail 21 extending from the opening end 11A side of the electronic device casing 10. As a result, the face cover 30 is positioned with respect to the electronic device casing 10. That is, the substrate 90 can be positioned with respect to the electronic device casing 10 on the opening end 11 </ b> A side of the electronic device casing 10.

  Subsequently, as shown in FIG. 5B, the claw body 32 of the face cover 30 is inserted into the receiving portion 20 of the electronic device casing 10. Accordingly, the rib portion 33 b of the guided body 33 is guided along the guide rail 21, and the locking portion 32 d of the claw body 32 comes into contact with the receiving portion 20. Furthermore, when the main body 31 of the face cover 30 is pushed into the electronic device casing 10, the locking portion 32d of the nail body 32 is pressed by the receiving portion 20, and the nail body 32 has a structure as shown in FIG. The outer member 32a is pushed in a direction approaching the inner member 32b with the folded member 32c as a fulcrum. That is, the interval between the locking portions 32 d of the claw body 32 provided at both ends of the main body 31 is smaller than the interval between the receiving portions 20 provided on the upper wall portion 13 and the lower wall portion 14 of the electronic device casing 10. . Then, by pushing the main body 31 of the face cover 30 into the electronic device casing 10 until the top of the locking portion 32d passes through the receiving portion 20, the locking portion 32d receives the locking portion 32d as shown in FIG. The outer member 32a returns to its original position while being fitted into the portion 20. Thereby, the substrate 90 on which the face cover 30 is mounted is attached to the electronic device casing 10.

  Next, a method for removing the substrate 90 from the electronic device housing 10 will be described. In a state where the substrate 90 with the face cover 30 attached is attached to the electronic device casing 10, the unlocking portions 32 e (the free ends of the outer members 32 a) of the respective nail bodies 32 provided at both ends of the main body 31. Manipulate. Specifically, the outer members 32 a of the respective claws 32 provided at both ends of the main body 31 are pressed toward the center of the main body 31. Thereby, the outer member 32a is pushed in the direction approaching the inner member 32b with the folding member 32c as a fulcrum, and the interval between the locking portions 32d of the claw bodies 32 provided at both ends of the main body 31 is It becomes smaller than the space | interval of the receiving parts 20 provided in the upper side wall part 13 and the lower side wall part 14. FIG. That is, the locking of the locking portion 32d by the receiving portion 20 is released.

  Subsequently, the face cover 30 is pulled out from the opening end 11 </ b> A of the electronic device housing 10 in a state where the outer member 32 a is pressed toward the center of the main body 31. Thereby, the fitting of the claw body 32 by the receiving portion 20 is released, and subsequently, the guide of the guided body 33 by the guide rail 21 is released. That is, the substrate 90 on which the face cover 30 is mounted is removed from the electronic device casing 10.

  As described above, according to the present embodiment, the guide rail 21 is extended from the opening end 11 </ b> A side of the electronic device housing 10, and the rib portion 33 b of the guided body 33 is connected to the opening end 11 </ b> A of the electronic device housing 10. Since the side guide rail 21 is fitted and slidable, the substrate 90 can be easily positioned with respect to the electronic device housing 10 when the substrate 90 is inserted into the electronic device housing 10.

  In the present embodiment, the face cover 30 is fixed to the electronic device casing 10 by locking the claw body 32 of the face cover 30 to the receiving portion 20 of the electronic device casing 10. Without being limited thereto, the face cover 30 may be fixed to the electronic device housing 10 by a fixing member such as a screw without providing the claw body 32 on the face cover 30.

  In the present embodiment, the substrate 90 is attached to the electronic device housing 10 by locking the claw portion of the face cover 30 by the receiving portion 20 of the electronic device housing 10. However, the present invention is not limited to this. For example, a structure in which the substrate 90 is attached to the electronic device housing 10 by using a fixing reinforcing member 40 as shown in FIG. 6 may be used.

  As shown in FIG. 6, the fixing reinforcing member 40 is formed by attaching the substrate 90 (face cover 30) to the electronic device casing 10, the nail body 32 and the guided body 33 of the face cover 30, and the electronic device casing. 10 are fitted to the upper side wall part 13 and the lower side wall part 14. As a result, the face cover 30 and the upper wall portion 13 and the lower wall portion 14 of the electronic device casing 10 are fixed via the fixing reinforcing material 40.

  As shown in FIG. 7, the fixed reinforcing member 40 is a resin member having a substantially J shape in a side view, and extends in the insertion direction S into the electronic device casing 10, and the distal end in the extending direction is a free end. A first wall portion 41, a second wall portion 42 facing the first wall portion 41, extending in the insertion direction S into the electronic device housing 10, and having a free end at the distal end in the extending direction; And a folded wall portion 43 that is a portion that is folded from the first wall portion 41 to the second wall portion 42.

  Between the first wall portion 41 and the second wall portion 42, a plurality of (three in FIG. 7) engagement protrusion portions 44 are formed so as to protrude from the folded wall portion 43 in a substantially L shape in a side view. . A wall receiving portion 44 a that receives the upper wall portion 13 or the lower wall portion 14 of the electronic device casing 10 is provided on the upper portion of the engaging protrusion 44. In the fixed reinforcing member 40, the upper wall portion 13 or the lower wall portion 14 is fitted between the wall receiving portion 44 a and the inner wall surface of the first wall portion 41.

  A claw that receives the outer member 32a (locking release portion 32e) of the claw body 32 of the face cover 30 between the first wall portion 41 and the second wall portion 42 and between the adjacent engagement protrusions 44. A receiving portion 43a is provided. When the fixed reinforcing member 40 is attached to the electronic device housing 10 in the claw receiving portion 43a, the outer member 32a (lock release portion 32e) of the claw body 32 is fitted. The protruding tip 44b of the engaging protruding portion 44 that forms the inlet portion of the claw receiving portion 43a is formed in a tapered shape so that the outer member 32a (locking release portion 32e) of the claw body 32 can be easily fitted into the claw receiving portion 43a. Has been.

  A plurality of (four locations in FIG. 7) insertion portions 42a are provided at the end of the second wall portion 42 in the insertion direction S side with respect to the electronic device housing 10. The insertion portion 42 a is inserted toward the folded member 32 c between the outer member 32 a and the inner member 32 b of the claw body 32 of the face cover 30 when the fixed reinforcing member 40 is attached to the electronic device housing 10. The insertion portion 42a is formed in a curved shape so that the tip portion can be easily inserted between the outer member 32a and the inner member 32b.

10 Electronic Equipment Case 11A Open End 21 Guide Rail (Guide Groove)
30 Face cover (board holding frame)
33 Guided body 33a Substrate holding part 33b Rib part 90 Substrate

Claims (2)

One end is open, the board can be inserted and removed from the open end, and the board mounting structure to the electronic equipment housing to which the inserted board is attached,
The electronic device casing is integrally formed on the inner wall surface of the wall portion, and a guide groove extending in the insertion / removal direction of the substrate is provided from the opening end side,
A substrate holding frame that is inserted and removed from the opening end of the electronic device casing in a state in which the substrate is held from a direction orthogonal to the insertion and removal direction of the substrate;
A guided body guided by the guide groove is integrally formed on the substrate holding frame,
The guided body is:
A substrate holding part that is integrally formed on one side of the guided body and holds the substrate from the insertion start end to the insertion end of the electronic device housing;
A rib formed integrally with the other side of the guided body and slidably fitted into the guide groove;
A board mounting structure to an electronic device casing, characterized by comprising: 2. The electronic device housing according to claim 1, wherein the rib portion is formed from an insertion start end of the substrate held in the substrate holding portion to the electronic device housing from an insertion end. Board mounting structure.

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