JP2017188553A - Housing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a housing which can easily fix a substrate to the housing if there is a dispersion in the sizes of the housing and/or the substrate.SOLUTION: A housing 10 accommodates a substrate 40 on which an electronic component 45 is mounted. The housing 10 includes: a box-shaped housing 20 which has an opening 21 to insert the substrate 40 therein; and a cover 30 which closes the opening 21 of the housing 20. The housing 20 further includes a holding unit 60 which, in order to accommodate the substrate 40 into the housing 20, is configured to depress the substrate 40 in the insertion direction of the substrate 40, so as to position the substrate 40 with an elastic deformation and fix the substrate 40 due to the elastic deformation.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a housing.

  A housing that houses a substrate on which an electronic component is mounted has an opening, and includes a housing that houses the substrate and a cover that closes the opening of the housing (see, for example, Patent Document 1).

  The housing described in Patent Document 1 includes an engagement portion and an engaged portion that engages with the engagement portion on the substrate or the housing in order to prevent the substrate from falling off the housing. The housing is deformed when the board is accommodated, and when it reaches a predetermined position, the engaging part engages with the engaged part provided on the circuit board or the housing, The substrate is fixed.

JP 2014-183139 A

  By the way, in the housing | casing of the said patent document 1, since an engaging part and a to-be-engaged part are engaged, when the dimension of a housing or a board | substrate has dispersion | variation, fixation with a housing and a board | substrate becomes inadequate. there is a possibility.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a housing that can easily fix the substrate to the housing even if the dimensions of the housing and the substrate vary. is there.

Hereinafter, means for solving the above-described problems and the effects thereof will be described.
A housing that solves the above problems is a housing that houses a board on which electronic components are mounted, and a box-shaped housing having an opening for inserting the board, and a cover for closing the opening of the housing And at least one of the housing and the cover, the substrate is elastically deformed by pressing the substrate in the insertion direction of the substrate to accommodate the substrate with respect to the housing. The gist of the present invention is that a holding portion configured to fix the substrate by positioning and accompanying the elastic deformation is provided.

  According to the above configuration, when the substrate is inserted into the housing in order to accommodate the substrate, the substrate is pressed against the holding portion provided in at least one of the housing and the cover in the insertion direction, and the holding portion is elastically deformed so that the substrate is elastically deformed. Is positioned and the substrate is fixed. Therefore, since the holding portion is elastically deformed, even if there are variations in the dimensions of the housing and the substrate, the variations are absorbed by the elastic deformation of the holding portion, so that the substrate can be easily fixed to the housing.

In the case described above, it is preferable that the holding portion is provided integrally with at least one of the housing and the cover.
According to the above configuration, since the holding portion is integrated with at least one of the housing and the cover, work and configuration for providing the holding portion are not necessary, and the holding portion can be provided together with the housing and the cover.

In the case described above, it is preferable that the holding portion is composed of a plurality of protruding members that are elastically deformed.
According to the above configuration, since the holding portion composed of a plurality of protruding members contacts the end portion of the substrate, the protruding members can be elastically deformed in accordance with the tolerance of the substrate, the insertion position deviation, etc., and the holding force of the substrate by the holding portion can be increased. Can be increased.

About the said housing | casing, it is preferable that the said protrusion member is extended so that the said board | substrate may be pinched | interposed.
According to the above configuration, since the holding portion extends so as to sandwich the substrate, the substrate and the holding portion can always contact each other, and the plurality of projecting members can be elastically deformed to hold the substrate.

With respect to the housing, it is preferable that the holding portion is provided with a recess that contacts an end portion of the substrate when the substrate is pressed, and the end portion of the substrate hits an inner wall of the recess.
According to the above configuration, the holding portion is provided with the recess, and when the substrate is pressed, the end portion of the substrate hits the inner wall of the recess to be elastically deformed so that both sides of the recess are caught, and the holding portion is caught. It is possible to further apply a force by which the formed portion sandwiches the substrate.

  According to the present invention, even if there are variations in the dimensions of the housing and the substrate, the substrate can be easily fixed to the housing.

The perspective view which shows the state which isolate | separated the housing and cover of the housing | casing. The perspective view which shows the state which connected the connector to the housing | casing. 3-3 sectional drawing of the structure of a housing | casing of FIG. 4-4 sectional drawing of FIG. 3 which shows the structure of a housing | casing. Sectional drawing which shows a state when accommodating a board | substrate in a housing | casing. The expanded partial sectional view which shows a state when accommodating a board | substrate in a housing | casing. Sectional drawing which shows the structure of the modification of a housing | casing.

Hereinafter, an embodiment of the housing will be described with reference to FIGS.
As shown in FIG. 1, the housing 10 constitutes an ECU by accommodating a substrate 40, for example. The housing 10 includes a box-shaped housing 20 having an opening 21 that opens in one direction. The housing 10 includes a box-shaped cover 30 that has an opening 31 that is open on one surface and has a rectangular through-hole 32 on a part of a surface that faces the surface on which the opening 31 is provided. The cover 30 closes the opening 21 of the housing 20 by being attached to the outside of the opening 21 of the housing 20. The housing 20 and the cover 30 are made of a synthetic resin material.

  Two engagement holes 24 penetrating the housing 20 are provided near the opening 21 of the upper wall portion 22 of the housing 20 and near the opening 21 of the lower wall portion 23 facing the upper wall portion 22. The upper wall portion 22 and the lower wall portion 23 include a closing portion 25 facing the opening portion 21 in the housing 10, and side wall portions 26 and 27 extending from the opening portion 21 toward the closing portion 25 on both sides in the width direction of the opening portion 21. It is connected by. The interior of the housing 20 surrounded by the upper wall portion 22, the lower wall portion 23, the side wall portions 26 and 27, and the closing portion 25 is hollow. A plate-like substrate 40 made of a synthetic resin material and mounted with electronic components is accommodated in the cavity of the housing 20. In the substrate 40 accommodated in the housing 20, the side surface of the substrate 40 faces the side wall portions 26 and 27. Note that guide portions 29 for positioning the substrate 40 in the thickness direction are provided on the inner surfaces of the side wall portions 26 and 27, respectively. The guide part 29 is provided from the opening part 21 of each side wall part 26 and 27 to the closing part 25. The guide portion 29 is provided by two plate-like members standing on the inner surfaces of the side wall portions 26 and 27 so that the substrate 40 is positioned and fixed inside the housing 10 by sandwiching a part of the substrate 40. It has been.

  On the substrate 40, a connector 50 that is electrically connected to various devices outside the housing 10 and various electronic components 45 such as capacitors and resistors are mounted. In the connector 50, a connection portion 51 that is electrically connected to various devices outside the housing 10 protrudes from the opening 21 of the housing 20 to the outside.

  The cover 30 includes a wall portion 33 in which the penetrating portion 32 is formed, and peripheral wall portions 34 a, 34 b, 34 c, 34 d erected from the wall portion 33. The peripheral wall portion 34a and the peripheral wall portion 34b face each other. The peripheral wall portion 34c and the peripheral wall portion 34d face each other. The size of the penetrating part 32 is set so that the connecting part 51 can be inserted. Two engaging protrusions 35 are formed on the peripheral wall portion 34 a and the peripheral wall portion 34 b at positions corresponding to the engaging holes 24 of the upper wall portion 22 and the lower wall portion 23 of the housing 20.

  As shown in FIG. 2, in a state where the substrate 40 is accommodated in the cavity of the housing 20, the cover 30 is attached to the housing 20 from the opening 31 side to close the opening 21 of the housing 20. At that time, the housing 20 and the cover 30 are fixed through the engagement of the engagement holes 24 and the engagement protrusions 35. A connector 52 with a cable is connected to the connection portion 51 of the connector 50 protruding from the through portion 32 of the cover 30.

Next, the holding unit provided in the housing 10 will be described with reference to FIGS. 3 and 4.
As shown in FIGS. 3 and 4, a holding portion 60 that holds the substrate 40 accommodated in the housing 20 is integrally provided on the inner surface of the closing portion 25 of the housing 20 of the housing 10. The holding unit 60 positions the substrate 40 with elastic deformation when the substrate 40 is pressed in the insertion direction of the substrate 40 in order to accommodate the substrate 40 with respect to the housing 20, and the substrate 40 with elastic deformation. 40 is configured to be fixed.

  Specifically, the holding part 60 is a plurality of protruding members 61 that are elastically deformed, and is erected from the inner surface of the closing part 25. The protruding member 61 of the holding portion 60 is a bowl-shaped member that extends so as to sandwich the substrate 40. That is, the projecting member 61 of the holding portion 60 extends from the inner surface of the lower wall portion 23 toward the upper wall portion 22 and extends to the front of the upper wall portion 22. In addition, you may extend to the inner surface of the upper wall part 22.

  The protruding member 61 of the holding part 60 is provided with a concave part 62 at a position where the tip part 41 of the substrate 40 abuts. When the substrate 40 is pressed against the recess 62 due to the insertion of the substrate 40 into the housing 10, the tip 41 of the substrate 40 abuts against the inner wall 62 a of the recess 62, and the protruding member 61 is elastically deformed, thereby causing the substrate 40. Get involved in.

Next, with reference to FIGS. 3-6, the effect | action of the housing | casing 10 comprised as mentioned above is demonstrated.
As shown in FIG. 5, when the substrate 40 is accommodated in the housing 20, the substrate 40 is inserted along the guide portion 29 of the housing 20. FIG. 5 shows a state where the substrate 40 does not contact the holding unit 60.

  Subsequently, when the cover 30 is mounted so as to close the opening 21 of the housing 20, the inner surface of the wall portion 33 of the cover 30 comes into contact with the base end portion 42 of the substrate 40, and the substrate 40 is pushed by the cover 30. Become.

  As shown in FIG. 6, when the substrate 40 is pushed and the tip portions 41 of the substrate 40 are pressed against the recesses 62 of the plurality of projecting members 61 of the holding unit 60, the plurality of projecting members 61 are elastically deformed, and the substrate The both end portions of the concave portions 62 of the plurality of projecting members 61 are wound around the front end portion 41 of 40. And the force in which the part in which the holding | maintenance part 60 was caught pinches the board | substrate 40 further acts. As a result, as shown in FIGS. 3 and 4, the substrate 40 is positioned, and a restoring force acts by being accompanied by elastic deformation, so that the substrate 40 is fixed to the holding portion 60. As a result, the substrate 40 is attached to the housing 20. Fixed.

As described above, according to this embodiment, the following effects can be obtained.
(1) When the substrate 40 is inserted into the housing 20 to accommodate the substrate 40, the substrate 40 is pressed against the holding portion 60 provided in the housing 20 in the insertion direction, and the holding portion 60 is elastically deformed, thereby causing the substrate 40 to be elastically deformed. And the substrate 40 is fixed. Therefore, since the holding portion 60 is elastically deformed, even if there are variations in the dimensions of the housing 20 and the substrate 40, the variations are absorbed by the elastic deformation of the holding portion 60, so that the substrate 40 can be easily fixed to the housing 20. can do.

(2) Since the housing 20 and the holding portion 60 are integrated, the work and configuration for providing the holding portion 60 are not necessary, and the holding portion 60 can be provided together with the housing 20.
(3) Since the holding portion 60 composed of a plurality of protruding members 61 abuts against the tip portion 41 of the substrate 40, the protruding members 61 can be elastically deformed according to the tolerance of the substrate 40, the displacement of the insertion position, etc., and the substrate by the holding portion 60 The holding power of 40 can be increased.

  (4) Since the holding portion 60 extends so as to sandwich the substrate 40, the substrate 40 and the holding portion 60 can always come into contact with each other, and the plurality of protruding members 61 can be elastically deformed to hold the substrate 40. it can.

  (5) The concave portion 62 is provided in the projecting member 61 of the holding portion 60, and when the substrate 40 is pressed, the front end portion 41 of the substrate 40 comes into contact with the inner wall 62 a of the concave portion 62 so that both sides of the concave portion 62 are caught. It is possible to further apply a force that elastically deforms and the portion where the holding part 60 is wound sandwiches the substrate 40.

In addition, the said embodiment can also be implemented with the following forms which changed this suitably.
In the above configuration, the number of hook-like protrusions 61 of the holding part 60 may be increased, or if the substrate 40 can be fixed by the holding part 60, the number of hook-like protrusions 61 of the holding part 60 May be reduced.

  In the above embodiment, the concave portion 62 provided in the protruding member 61 of the holding portion 60 is the concave portion 62 in which the front end portion 41 of the substrate 40 hits the inner wall 62a, but the bottom portion of the concave portion 62 is located on the inner surface of the closed portion 25. The projecting member 61 of the holding part 60 may be divided into upper and lower parts.

-If the board | substrate 40 can be fixed with the protrusion member 61 of the holding | maintenance part 60, it is good also as a recessed part which does not contact the inner side wall 62a.
In the above embodiment, the concave portion 62 is provided in the protruding member 61 of the holding portion 60. However, the concave portion 62 may be omitted if the substrate 40 can be fixed by the protruding member 61 of the holding portion 60.

  -In above-mentioned embodiment, although the protrusion member 61 of the holding | maintenance part 60 was used as the hook-shaped member, it is good also as a protrusion member of another shape. For example, as shown in FIG. 7, it is good also as the holding | maintenance part 70 provided with the some needle-shaped protrusion member 71. FIG. Even in such a shape, when the substrate 40 is inserted into the housing 20 and pressed against the holding portion 70, the needle-like projecting member 71 is elastically deformed, and the substrate 40 is held by the restoring force of the projecting member 71. At the same time, the plurality of projecting members 71 hit from various directions, whereby the substrate 40 can be positioned and the substrate 40 can be fixed.

In the above configuration, the side wall portions 26 and 27 may be further provided with holding portions.
In the above embodiment, the guide portion 29 is provided from the opening portion 21 of the side wall portions 26 and 27 to the closing portion 25, but it may be provided only near the opening portion 21 and the closing portion 25 of the side wall portions 26 and 27. Good.

  In the above embodiment, the holding portion 60 is provided on the housing 20 so that the tip portion 41 of the substrate 40 abuts, but the holding portion 60 may be provided on the cover 30. That is, a holding portion may be provided on the inner surface of the wall portion 33 of the cover 30 so that the base end portion 42 of the substrate 40 abuts. Further, the cover 30 and the holding portion may be provided integrally.

-Moreover, you may provide a holding | maintenance part in both the housing 20 and the cover 30. FIG.
In the above embodiment, the holding unit 60 is provided integrally with the housing 20 (cover 30). However, the holding unit 60 may be provided separately from the housing 20 (cover 30).

  In the above embodiment, the holding part 60 is a plurality of hook-like protrusions 61 and the holding part 70 is a plurality of needle-like protrusions 71. Not only these but holding parts of other shapes may be used. For example, as a rectangular parallelepiped member, the substrate 40 may be positioned by being elastically deformed by pressing the substrate 40, and may be a holding unit that fixes the substrate 40 by elastic deformation.

  In the above configuration, the material of the holding portion 60 (70) is not particularly limited as long as it is a material that can be elastically deformed.

  DESCRIPTION OF SYMBOLS 10 ... Housing, 20 ... Housing, 21 ... Opening part, 22 ... Upper wall part, 23 ... Lower wall part, 24 ... Engagement hole, 25 ... Closure part, 26 ... Side wall part, 27 ... Side wall part, 29 ... Guidance , 30 ... cover, 31 ... opening, 32 ... penetration, 33 ... wall, 34a, 34b, 34c, 34d ... peripheral wall, 35 ... engagement projection, 40 ... substrate, 41 ... tip, 42 ... Base end portion, 45 ... electronic component, 50 ... connector, 51 ... connecting portion, 52 ... connector with cable, 60 ... holding portion, 61 ... projection member, 62 ... recess, 62a ... inner side wall, 70 ... holding portion, 71 ... Protruding member.

Claims (5)

A housing that houses a substrate on which electronic components are mounted,
A box-shaped housing having an opening for inserting the substrate;
A cover for closing the opening of the housing,
At least one of the housing and the cover positions the substrate with elastic deformation by pressing the substrate in the insertion direction of the substrate to accommodate the substrate with respect to the housing, and A housing provided with a holding part configured to fix the substrate by elastic deformation. The housing according to claim 1, wherein the holding portion is provided integrally with at least one of the housing and the cover. The housing according to claim 1, wherein the holding portion includes a plurality of protruding members that are elastically deformed. The housing according to claim 3, wherein the protruding member extends so as to sandwich the substrate. The holding portion is provided with a recess that the end of the substrate hits when the substrate is pressed,
The housing according to claim 4, wherein an end of the substrate hits an inner wall of the recess.