JP5459233B2 - Electronic equipment - Google Patents

Description

  The present invention relates to an electronic device in which an insertion opening through which a connection member is inserted is formed in a cover that closes an opening of a case.

  2. Description of the Related Art Conventionally, a control device disclosed in Patent Literature 1 is known as an electronic device in which an insertion opening through which a connection member is inserted is formed in a cover that closes an opening of a case. In this control device, a printed circuit board on which a connector member is mounted as a connection member connected to an external device is accommodated in a case. A cover is fitted on the opening side of the case, and the connection terminal side of the connector member faces the outside of the case from the connector square hole portion of the cover. The printed circuit board accommodated in the case is pressed and supported by a pair of support rails and stoppers provided on the left and right inner wall surfaces of the case and a holding part formed on the cover. Thereby, the shakiness of the printed circuit board with respect to a case is suppressed.

  Moreover, in the vehicle-mounted electronic control apparatus disclosed by the following patent document 2, the shelf and the funnel-shaped part which guides a printed circuit board to a predetermined position and the pair which fixes a printed circuit board are comprised in the inner surface of a housing | casing (case). A protrusion is formed. The connector housing mounted on the printed circuit board is used as a cover for the opening of the case, and the case and the connector housing are fixed by fitting holes and protrusions formed in the case and the connector housing, respectively.

JP 2000-261166 A JP 2002-134963 A

  By the way, as disclosed in Patent Document 1, in the configuration in which the substrate surface of the printed circuit board is pressed and fixed by the holding portion of the cover, the contact area of the substrate surface that contacts the holding portion and the periphery thereof are arranged. Distortion will occur. For this reason, it is necessary to make this region a mounting prohibited region in which elements cannot be mounted, and there is a problem that it is difficult to reduce the size of the substrate because the region (area) that can be mounted on the substrate surface is reduced.

  For this reason, as disclosed in Patent Document 2, it is conceivable that the cover comes into contact with the board surface by using the connector housing mounted (mounted) on the printed board as a cover for the opening of the case. However, in such a configuration, it is necessary to design the connector housing, the printed board, and the case as a set for exclusive use. For this reason, when changing the size of a board | substrate or a case, for example, there exists a problem that it is necessary to prepare the connector housing according to this change.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an electronic device that can reduce the size of the device by reducing the mounting prohibited area on the substrate surface. .

  In order to achieve the above object, in the electronic device according to claim 1, a connection member for connecting to an external device is mounted on a substrate surface, and the substrate is accommodated through a case opening. And a cover body in which an insertion opening for allowing the connection member to be inserted is formed, and is assembled to the case in a state where the connection member is inserted through the insertion opening. A cover for closing the case opening, wherein the cover is formed so as not to contact the substrate surface when assembled to the case in which the substrate is accommodated. A pair of holding portions for holding the substrate on which the connection member is mounted are formed by facing and contacting the connection member.

  According to a second aspect of the present invention, in the electronic device according to the first aspect, the pair of holding portions are formed so as to face and contact the connection member in a direction orthogonal to the substrate surface. It is characterized by that.

  According to a third aspect of the present invention, in the electronic device according to the first or second aspect, the cover is provided with a plurality of the pair of holding portions with respect to the connection member.

  According to a fourth aspect of the present invention, in the electronic device according to any one of the first to third aspects, at least one of the pair of holding portions is in contact with the connection member in an elastically deformed state. It is characterized by being formed as a biasing means for biasing the connection member for holding.

  According to a fifth aspect of the present invention, in the electronic device according to any one of the first to third aspects, one of the pair of holding portions is interposed between the substrate surface and the connecting member and is connected to the connecting member. It is formed as an urging means for urging the connecting member for holding by contacting in a state of being elastically deformed.

  According to a sixth aspect of the present invention, in the electronic device according to the fourth or fifth aspect, the holding portion formed as the urging means contacts the connecting member at a position away from the cover main body, and from the contact position. The cross-sectional area in the direction orthogonal to the substrate surface is gradually increased toward the cover body.

  According to a seventh aspect of the present invention, in the electronic device according to the sixth aspect, the holding portion formed as the urging means includes a protrusion that contacts the connecting member, and a beam portion that connects the protrusion and the cover body. The beam portion is configured such that the length in the direction along the substrate surface gradually increases from the protrusion toward the cover body, and the length in the direction orthogonal to the substrate surface increases gradually. The cross-sectional area is formed so as to gradually increase.

  According to an eighth aspect of the present invention, in the electronic device according to any one of the first to seventh aspects, when the cover is assembled to a case in which the substrate is accommodated, the substrate surface of the substrate is arranged. A pressing portion that presses the removed portion in a direction along the substrate surface is formed.

In the first aspect of the invention, the cover is formed so as not to contact the substrate surface when assembled to the case in which the substrate is accommodated, and the cover main body faces the connection member by facing the connection member. A pair of holding portions for holding the substrate on which the connection member is mounted is formed.
In this way, since the substrate on which the connection member is mounted is held by the pair of holding portions facing each other and contacting the connection member without the cover being in contact with the substrate surface, the substrate surface caused by holding the substrate The occurrence of distortion at is suppressed. As a result, the mountable area on the board surface is widened, so that the board and the apparatus that accommodates the board can be reduced in size by reducing the mounting prohibited area on the board surface.

  In a second aspect of the present invention, the pair of holding portions are formed to face and contact the connection member in a direction orthogonal to the substrate surface. Thereby, it is possible to reliably suppress the transmission of the external force acting in the orthogonal direction with respect to the connection portion of the connection member mounted on the substrate surface.

  In the invention of claim 3, since the cover is provided with a plurality of pairs of holding portions with respect to the connecting member, even when a relatively large external force is transmitted to each holding portion via the connecting member, Since it becomes easy to be relaxed by the holding portion, the substrate on which the connection member is mounted can be reliably held without contacting the substrate surface.

  In the invention of claim 4, at least one of the pair of holding portions is formed as an urging means for urging the connecting member for holding by contacting the connecting member in an elastically deformed state. Therefore, the substrate can be held without coming into contact with the substrate surface, and even when an external force is transmitted to each holding portion through the connecting member, the external force is reduced by elastic deformation of the holding portion formed as a biasing means. can do.

  According to the fifth aspect of the present invention, one of the pair of holding portions is interposed between the substrate surface and the connection member, and urges the connection member for holding by contacting the connection member in an elastically deformed state. Formed as a biasing means. Therefore, the substrate can be held without coming into contact with the substrate surface, and even when an external force is transmitted to each holding portion through the connecting member, the external force is reduced by elastic deformation of the holding portion formed as a biasing means. can do. In particular, since the holding portion formed as the urging means is interposed between the substrate surface and the connection member, the space can be effectively utilized compared to the case where the holding portion is brought into contact with the portion of the connection member that does not face the substrate surface, By adopting the holding portion formed as the urging means, it is possible to suppress an increase in the case opening, that is, an increase in the case size.

  In the invention of claim 6, the holding portion formed as the urging means contacts the connecting member at a position away from the cover body, and a cross-sectional area in a direction perpendicular to the substrate surface from the contact position toward the cover body. Is formed to gradually increase. For this reason, since the external force via the connection member is dispersed and transmitted to the holding portion, stress concentration at the connecting portion between the holding portion and the cover main body is suppressed, and damage to the holding portion or the like can be prevented.

  In the invention of claim 7, the length of the beam portion of the holding portion in the direction along the substrate surface gradually increases from the protrusion toward the cover body, and the length in the direction orthogonal to the substrate surface gradually increases. Thus, it is formed in a tapered shape so that the cross-sectional area gradually increases. Thereby, the said cross-sectional area can be gradually enlarged with the shape which is easy to form, the stress concentration in the connection part of a holding | maintenance part and a cover main body can be suppressed, and damage to a holding | maintenance part etc. can be prevented.

  In the invention of claim 8, the cover is formed with a pressing portion that presses a portion of the substrate excluding the substrate surface in a direction along the substrate surface when assembled to the case in which the substrate is accommodated. As a result, when the cover is assembled to the case, the portion of the substrate excluding the substrate surface is pressed in the accommodation direction by the pressing portion, so that the holding force of the substrate by the cover is increased without causing distortion on the substrate surface. Can do.

FIG. 1A is a side view showing a partial cross section of the electronic device according to the first embodiment, and FIG. 1B is a view seen from the connector side. It is sectional drawing to which the connector vicinity of FIG. 1 was expanded. 3A is a front view showing a detailed shape of the cover of FIG. 1, FIG. 3B is a side view, and FIG. 3C is a line 3C-3C of FIG. 3A. It is sectional drawing by a considerable cut surface. It is the expanded sectional view which expanded the section by the cut surface equivalent to the 4-4 line of Drawing 3 (A). FIG. 5A is a cross-sectional view for explaining a state in which the cover of FIG. 3 is assembled to a case in which a circuit board is accommodated, FIG. 5A shows a state before assembly, and FIG. Indicates. It is sectional drawing which shows the cover which is the principal part of the electronic device which concerns on 2nd Embodiment. It is sectional drawing which shows the cover which is the principal part of the electronic device which concerns on 3rd Embodiment. FIGS. 8A and 8B are cross-sectional views showing a state in which the cover of FIG. 7 is assembled to the case in which the circuit board is accommodated as viewed from above, FIG. 8A shows a state before assembly, and FIG. Indicates the state.

[First Embodiment]
Hereinafter, an electronic device according to a first embodiment of the present invention will be described with reference to the drawings. FIG. 1A is a side view showing a partial cross section of the electronic device 10 according to the first embodiment, and FIG. 1B is a view seen from the connector side. FIG. 2 is an enlarged cross-sectional view of the vicinity of the connector 42 of FIG. 3A is a front view showing the detailed shape of the cover 30 in FIG. 1, FIG. 3B is a side view, and FIG. 3C is 3C-3C in FIG. 3A. It is sectional drawing by the cut surface equivalent to a line. FIG. 4 is an enlarged cross-sectional view in which a cross section taken along a line 4-4 in FIG. 3A is enlarged.

  An electronic device 10 shown in FIG. 1 is mounted on a device such as an automobile, and has a communication function for communicating with an external device (not shown) connected via a connector 42 mounted on a circuit board 40. . The electronic device 10 has an outer case constituted by a resin case 20 formed in a substantially rectangular parallelepiped shape and a resin cover 30 that closes the case opening 21 of the case 20.

  The case 20 is formed so as to incline inward so that the opening end portion constituting the case opening 21 is sandwiched and fitted to the cover 30 so that the opening area becomes smaller toward the end portion side. Further, convex portions 22 that engage with a U-shaped engaging portion 33 described later when the case opening 21 is closed by the cover 30 are provided in the vicinity of the case opening 21 on both outer side surfaces of the case 20.

  A pair of support rails 23 for guiding and supporting the circuit board 40 are formed on both inner side surfaces of the case 20, and the circuit board 40 is guided to the both support rails 23 through the case opening 21 and the case 20. Is housed inside. A predetermined wiring pattern is formed on the substrate surface 40a of the circuit board 40, and an electronic component 41 and the like for realizing the communication function and the like are mounted thereon.

  As shown in FIGS. 1 and 2, a connector 42 is mounted in the vicinity of the outer edge of the substrate surface 40a as a connection member for connecting to the external device corresponding to the predetermined wiring pattern. The connector 42 has an outer shape formed by a substantially rectangular parallelepiped connector housing 43, and a female terminal (not shown) for inserting a male terminal of a harness connected to an external device into a connection end surface 43 a of the connector housing 43. A plurality of abbreviations) are formed. Each female terminal is connected to a corresponding wiring pattern on the board surface 40a via a plurality of connector pins 44. The connector 42 thus configured has a plurality of protrusions 45 provided on the lower surface of the connector housing 43 in contact with the substrate surface 40a, and the connection end surface 43a of the connector housing 43 protrudes from the outer edge of the substrate surface 40a. It is fastened and fixed to the circuit board 40 using screws 46 or the like.

  The connector housing 43 is formed such that when the circuit board 40 is accommodated in the case 20, the connection end surface 43 a protrudes from the case opening 21 and a predetermined gap is provided with respect to the inner surface (opening end) of the case 20. ing.

  The cover 30 closes the case opening 21 in a state where the connection end face 43a of the connector housing 43 is exposed to the outside by being assembled to the case 20 in which the circuit board 40 is accommodated. This prevents foreign matter from being mixed into the case 20 or condensation from the case 20. As shown in FIGS. 3 and 4, the cover 30 includes a cover main body 31 for closing the case opening 21, an annular fitting portion 32 for assembling the cover main body 31 to the case 20, and a pair of U-shapes. And an engaging portion 33.

  The annular fitting part 32 is formed so as to project in a substantially square annular shape along the outer edge of the cover body 31 so as to be fitted and fitted from the inner surface side to the opening end part constituting the case opening 21. The annular fitting portion 32 is formed such that the upper fitting portion 32a located on the upper side contacts the upper surface of the inner surface of the case 20 on the upper surface and contacts the upper surface of the connector housing 43 on the lower surface. The pair of U-shaped engaging portions 33 protrudes in a substantially orthogonal direction from both ends in the longitudinal direction with respect to the cover body 31 so as to engage with the convex portions 22 provided on both outer side surfaces of the case 20. Each is formed in a shape.

  The cover main body 31 is formed with a rectangular insertion opening 34 through which the connector housing 43 can be inserted at the center thereof. Further, the lower edge of the insertion opening 34 of the cover main body 31 is interposed between the board surface 40a and the connector housing 43, and comes into contact with only the connector housing 43 in an elastically deformed state without contacting the board surface 40a. Three support portions 35 are formed (see FIG. 2). These support portions 35 are opposed to the connector housing 43 by the upper fitting portion 32a of the annular fitting portion 32 and contact from the vertical direction, thereby holding a pair of circuit boards 40 on which the connector 42 is mounted. Each functions as a holding unit.

  As shown in FIG. 4, the support portion 35 includes a protrusion 35 a that contacts the connector housing 43 at a position away from the cover body 31, and an elastically deformable beam portion 35 b that connects the protrusion 35 a and the cover body 31. It is configured. The protrusion 35 a is formed with a tip end inclined to facilitate insertion of the connector housing 43 into the insertion opening 34.

  The beam portion 35b is trapezoidal so that the length in the direction along the substrate surface 40a gradually increases from the protrusion 35a toward the cover body 31 in order to avoid stress concentration at the connection portion with the cover body 31. The cross-sectional area in the direction orthogonal to the substrate surface 40a is gradually increased (see FIG. 3C). The beam portion 35b is formed so that the upper surface thereof is connected to the lower edge of the insertion opening 34 substantially in parallel without a step and the thickness thereof is substantially constant.

  By configuring each support portion 35 in this way, when the connector housing 43 is inserted into the insertion opening 34, each projection 35a contacts the lower surface of the connector housing 43 and moves downward, and the beam portion 35b moves downward. Elastically deforms so as to incline toward As a result, the elastic force of the support portion 35 acts upward on the lower surface of the connector housing 43 via the protrusion 35a. At the time of this insertion, since the upper fitting portion 32a of the annular fitting portion 32 is in contact with the upper surface of the connector housing 43, each support portion 35 can be used as a biasing means for biasing the connector housing 43 for holding. Function.

  Further, when the cover 30 is assembled to the case 20 in which the circuit board 40 is accommodated, a portion of the circuit board 40 excluding the board surface 40a, specifically, the side edge portion 40b of the circuit board 40 is provided on the cover 30. A pressing portion 36 that presses in the direction along the surface 40a (the accommodation direction in which the circuit board 40 is accommodated in the case 20) is provided. In order to apply an appropriate elastic force to the side edge portion 40b, the pressing portion 36 is formed of a member that is more easily elastically deformed than the cover body 31, such as a rubber member.

  Next, attachment of the cover 30 to the case 20 that houses the circuit board 40 will be described with reference to FIG. 5 is a cross-sectional view for explaining a state in which the cover 30 in FIG. 3 is assembled to the case 20 in which the circuit board 40 is accommodated, and FIG. 5 (A) shows a state before the assembly. (B) shows the state after assembly.

  First, the circuit board 40 is inserted into the case 20 so as to be guided by the support rails 23 through the case opening 21. Then, the circuit board 40 is inserted to a predetermined position in contact with a stopper (not shown) provided on the both support rails 23 and accommodated in the case 20. After housing the circuit board 40 in the case 20 in this way, as shown in FIG. 5A, the cover 30 is placed so that the cover 30 faces the connection end face 43 a of the connector housing 43 at the insertion opening 34. Move closer to.

  Then, by pushing the cover 30 into the case side, the projections 35a of the respective support portions 35 are pressed down while coming into contact with the lower surface of the connector housing 43, and the respective beam portions 35b are elastically deformed so as to be inclined downward. At this time, the annular fitting portion 32 is in contact with the upper surface of the connector housing 43 at the lower surface of the upper fitting portion 32a. Further, when the cover 30 is pushed into the case side, the annular fitting portion 32 comes into contact from the inner surface side so as to widen the opening end portion constituting the case opening 21 to the outer surface side.

  Then, as shown in FIG. 5B, the cover 30 is pushed into the case side until the pressing portion 36 comes into contact with the side edge portion 40b of the circuit board 40, so that the annular fitting portion 32 is fitted into the opening end portion. The two U-shaped engaging portions 33 are engaged with the convex portions 22 respectively. Thereby, the assembly of the cover 30 to the case 20 is completed in a state where the connection end face 43a of the connector housing 43 protrudes outward from the insertion opening 34.

  When the assembly is completed, the cover 30 is mounted on the circuit board on which the connector 42 is mounted by contacting the connector housing 43 from above and below by a pair of holding portions of the support portion 35 and the upper fitting portion 32a. 40 is held without contacting the substrate surface 40a. In such an assembled state, even when an external force is transmitted to each support portion 35 via the connector 42, this external force is relieved by the elastic deformation of each support portion 35.

  As described above, in the electronic device 10 according to the present embodiment, the cover 30 is formed so as not to contact the board surface 40a when assembled to the case 20 in which the circuit board 40 is accommodated. The support portion 35 and the upper fitting portion 32a are formed as a pair of holding portions that hold the circuit board 40 on which the connector 42 is mounted by facing the connector housing 43 from above and below.

  In this way, the circuit board on which the connector 42 is mounted is formed by the support portion 35 and the upper fitting portion 32a that are a pair of holding portions facing each other and contacting the connector housing 43 in a state where the cover 30 is not in contact with the substrate surface 40a. Since 40 is held, the occurrence of distortion on the board surface 40a due to the holding of the circuit board 40 is suppressed. As a result, the mountable area on the board surface 40a is widened, so that the circuit board 40 and the electronic device 10 that accommodates the circuit board 40 can be reduced in size by reducing the mounting prohibited area on the board surface 40a.

  Further, the support portion 35 and the upper fitting portion 32a are formed so as to face and contact the connector housing 43 in a direction (vertical direction) orthogonal to the board surface 40a. Thereby, it is possible to reliably suppress the transmission of an external force acting in the orthogonal direction (vertical direction) to each connector pin 44 that is a connection portion of the connector 42 mounted on the board surface 40a.

  Further, since the cover 30 is provided with a plurality of support portions 35 as a pair of holding portions with respect to the connector housing 43, even when a relatively large external force is transmitted to each support portion 35 via the connector 42, Since the external force is easily relaxed at each support portion 35, the circuit board 40 on which the connector 42 is mounted can be reliably held without contacting the board surface 40a. In the present embodiment, three support portions 35 are provided. However, the present invention is not limited thereto, and four or more support portions 35 may be provided, or one or two locations may be provided depending on an assumed external force. Good.

  Further, each support portion 35 which is one of the pair of holding portions is formed as an urging means for urging the connector 42 for holding by contacting the connector housing 43 in an elastically deformed state. . Therefore, the circuit board 40 can be held without coming into contact with the board surface 40a, and the elasticity of each support part 35 formed as an urging means even when an external force via the connector 42 is transmitted to each support part 35. The external force can be relaxed by deformation.

  In addition, each support portion 35, which is one of the pair of holding portions, is interposed between the board surface 40 a and the connector housing 43 and contacts the connector housing 43 in an elastically deformed state to hold the connector 42. Therefore, it is formed as an urging means for urging. Thus, since each support part 35 is interposed between the board | substrate surface 40a and the connector housing 43, when this holding | maintenance part is made to contact the site | part of the connector housing 43 which does not oppose the board | substrate surface 40a, for example, the upper surface of the connector housing 43 In comparison, the space can be effectively utilized, and the increase in the size of the case opening 21, that is, the increase in the size of the case 20 can be suppressed by adopting the support portions 35.

  Further, each support portion 35 contacts the connector housing 43 at a position away from the cover main body 31 by the protrusion 35a, and the beam portion 35b extends from the contact position toward the cover main body 31 in a direction orthogonal to the substrate surface 40a. It is formed so that the cross-sectional area gradually increases. For this reason, since the external force via the connector 42 is dispersed and transmitted to each support portion 35, stress concentration at the connecting portion between each support portion 35 and the cover body 31 is suppressed, and each support portion 35 and the like are damaged. Can be prevented.

  In particular, the beam portion 35b of each support portion 35 has a base so that the cross-sectional area gradually increases as the length in the direction along the substrate surface 40a from the protrusion 35a toward the cover body 31 gradually increases. Since it is formed in a shape (tapered shape), the cross-sectional area can be gradually increased with an easily formed shape.

  The cover 30 is provided with a pressing portion 36 that presses the side edge portion 40b of the circuit board 40 in the direction along the board surface 40a when the cover 30 is assembled to the case 20 in which the circuit board 40 is accommodated. Thereby, when the cover 30 is assembled to the case 20, the side edge portion 40b different from the substrate surface 40a is pressed by the pressing portion 36 in the accommodation direction, so that the substrate 30 is not distorted and the cover 30 is not distorted. The holding power of the circuit board 40 can be increased. The pressing portion 36 may be formed integrally with the cover main body 31 by protruding a part of the cover main body 31 so as to be elastically deformable without providing another member such as a rubber member.

[Second Embodiment]
Next, an electronic device according to a second embodiment of the present invention will be described with reference to FIG. FIG. 6 is a cross-sectional view showing a cover 30a that is a main part of the electronic device 10 according to the second embodiment. FIG. 6 is an enlarged cross-sectional view corresponding to a cross section taken along line 4-4 in FIG.
The electronic device 10 according to the second embodiment differs from the electronic device according to the first embodiment in that a cover 30a is employed instead of the cover 30. Therefore, substantially the same components as those of the electronic device of the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIG. 6, the cover 30 a employs a beam portion 35 c instead of the beam portion 35 b with respect to the cover 30 described above. The beam portion 35c is formed in a trapezoidal shape (tapered shape) so that the length in the direction along the substrate surface 40a gradually increases from the protrusion 35a toward the cover body 31 as in the first embodiment. Not only that, but the length in the direction perpendicular to the substrate surface 40a (thickness: vertical direction in FIG. 6) is gradually increased, so that the cross-sectional area is gradually increased. In particular, the beam portion 35c is formed such that the upper surface thereof is connected to the lower edge of the insertion opening 34 substantially in parallel without a step, and the lower surface thereof is inclined so as to change the thickness.

  Even in this case, the cross-sectional area can be gradually increased with an easily formed shape, and the external force via the connector 42 is dispersed and transmitted to each support portion 35. The stress concentration at the connection portion is suppressed, and the breakage of each support portion 35 and the like can be prevented. In particular, since the upper surface of the beam portion 35c is formed substantially parallel to the lower edge of the insertion opening 34 without a step, the upper surface of the cover 30a is inclined as in the case of the lower surface. Molding becomes easy, and the manufacturing cost can be reduced.

  The beam portion employed in the cover 30a gradually increases in thickness from the projection 35a toward the cover body 31, and the length in the direction along the substrate surface 40a is constant without changing. It may be formed. Further, the cover 30a may be formed such that the beam portion thereof is constant without changing the length in the direction along the substrate surface 40a and the thickness depending on the action state of the external force and the like. It may be formed so as to directly contact the lower surface of the connector housing 43 by eliminating 35a.

[Third Embodiment]
Next, an electronic device according to a third embodiment of the present invention will be described with reference to FIGS. FIG. 7 is a cross-sectional view showing a cover 30b, which is a main part of the electronic device 10 according to the third embodiment. FIG. 8 is a cross-sectional view showing a state where the cover 30b of FIG. 7 is assembled to the case 20 in which the circuit board 40 is accommodated, as viewed from above, and FIG. 8 (A) shows a state before the assembly. B) shows the state after assembly. FIG. 7 is a cross-sectional view corresponding to a cross section taken along the line 3C-3C in FIG.

  The electronic device 10 according to the third embodiment is different from the electronic device according to the first embodiment in that a cover 30b is used instead of the cover 30. Therefore, substantially the same components as those of the electronic device of the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIG. 7, the cover 30 b is formed so as to newly adopt a pair of restricting portions 37 with respect to the cover 30 described above. The pair of restricting portions 37 are provided on both side edges of the insertion opening 34, and come into contact with the connector housing 43 from both sides when the cover 30b is assembled to the case 20, so that the board surface of the connector housing 43 is provided. It has the function of regulating and holding movement in the direction along 40a. That is, the pair of restriction portions 37 also function as a pair of holding portions that hold the connector 42.

  The restricting portion 37 includes a protrusion 37 a that contacts the side surface of the connector housing 43 at a position away from the cover body 31, and an elastically deformable beam portion 37 b that connects the protrusion 37 a and the cover body 31. The protrusion 37 a is formed with an inclined front end side in order to facilitate insertion of the connector housing 43 into the insertion opening 34. The beam portion 37b is formed so that its inner side surface is connected to the side edge of the insertion opening 34 substantially in parallel with no step and the thickness thereof is substantially constant.

  By configuring the both restricting portions 37 in this way, the connector housing 43 is inserted into the insertion opening 34 from the state in which the insertion opening 34 faces the connection end surface 43a of the connector housing 43 as shown in FIG. When the projection 37a is inserted into the connector housing 43, the projections 37a contact the side surfaces of the connector housing 43 and move outward, so that the beam portion 37b is elastically deformed so as to incline outward. As a result, as shown in FIG. 8B, the elastic force of both restricting portions 37 acts inward so as to be held between both side surfaces of the connector housing 43 via the projections 37a.

  Therefore, it is possible to restrict the connector 42 from moving in the direction along the board surface 40a, particularly in the direction orthogonal to the accommodation direction (the left-right direction in FIG. 8). Further, by restricting the movement of the connector 42 in the direction along the board surface 40a, the number of locations where the connector 42 is fixed to the circuit board 40 using the screws 46 or the like can be reduced, and the mountable area (area) of the board surface 40a. Can be spread.

  As a modification of the third embodiment, the beam portion 37b is formed from the protrusion 37a to the cover body 31 like the beam portion 35b and the beam portion 35c described above in order to avoid stress concentration at the connection portion with the cover body 31. Alternatively, the cross-sectional area in the direction orthogonal to the substrate surface 40a may be gradually increased. Thereby, the stress concentration in the connection part of the control part 37 and the cover main body 31 can be avoided.

In addition, this invention is not limited to said each embodiment and its modification, You may actualize as follows.
(1) A member inserted through the insertion opening 34 of the cover 30, 30 a, 30 b and held by the support portion 35 or the like is not limited to the connector 42 and is connected to an external device such as a cable mounted on the circuit board 40. It may be a connecting member.

(2) Each support portion 35 is not limited to be interposed between the board surface 40 a and the connector housing 43, but is formed to be interposed between the inner surface of the case 20 and the connector housing 43, for example. May be. In this case, a member that faces and contacts the connector housing 43 by the support portions 35 is provided in the cover main body 31 to form a pair of holding portions that hold the circuit board 40 on which the connector 42 is mounted.

DESCRIPTION OF SYMBOLS 10 ... Electronic device 20 ... Case 21 ... Case opening 30, 30a, 30b ... Cover 31 ... Cover main body 32a ... Upper fitting part (a pair of holding part)
34 ... opening for insertion 35 ... support part (a pair of holding parts)
35a ... Projection 35b, 35c ... Beam part 36 ... Pressing part 37 ... Restricting part (a pair of holding parts)
DESCRIPTION OF SYMBOLS 40 ... Circuit board 40a ... Board surface 40b ... Side edge part 42 ... Connector (connection member)
43 ... Connector housing

Claims (8)

A board on which a connecting member for connecting to an external device is mounted on the board surface;
A case in which the substrate is accommodated through a case opening;
A cover body having an insertion opening through which the connection member is inserted, and the case opening is closed by being assembled to the case with the connection member being inserted through the insertion opening; A cover,
An electronic device comprising:
The cover is formed so as not to contact the substrate surface when assembled to the case in which the substrate is accommodated.
The electronic device according to claim 1, wherein the cover main body is formed with a pair of holding portions that hold the substrate on which the connection member is mounted by contacting the connection member so as to face the connection member.   The electronic device according to claim 1, wherein the pair of holding portions are formed to face and contact the connection member in a direction perpendicular to the substrate surface.   The electronic device according to claim 1, wherein the cover includes a plurality of the pair of holding portions with respect to the connection member.   At least one of the pair of holding portions is formed as urging means for urging the connecting member for holding by contacting the connecting member in an elastically deformed state. Item 4. The electronic device according to any one of Items 1 to 3.   One of the pair of holding portions is interposed between the substrate surface and the connection member, and biasing means for biasing the connection member for holding by contacting the connection member in an elastically deformed state. The electronic device according to claim 1, wherein the electronic device is formed as:   The holding portion formed as the urging means contacts the connecting member at a position away from the cover main body, and a cross-sectional area in a direction perpendicular to the substrate surface from the contact position toward the cover main body is gradually increased. The electronic device according to claim 4, wherein the electronic device is formed so as to be large. The holding portion formed as the urging means is composed of a protrusion that contacts the connecting member and a beam portion that connects the protrusion and the cover body,
The beam portion gradually increases in length in a direction along the substrate surface from the protrusion toward the cover body, and gradually increases in length in a direction perpendicular to the substrate surface, so that the cross-sectional area gradually increases. The electronic device according to claim 6, wherein the electronic device is formed to be large.   The cover is formed with a pressing portion that presses a portion of the substrate excluding the substrate surface in a direction along the substrate surface when assembled to the case in which the substrate is accommodated. Item 8. The electronic device according to any one of Items 1 to 7.

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