JP5648699B2 - Power supply - Google Patents

Description

  The present invention particularly relates to a cable support structure inside a housing for housing electronic components, and a power supply device including the cable support structure.

  In a housing that houses a plurality of electronic components such as a power supply device, a number of cables are attached inside. Since there is a possibility of damage or the like when these cables move, various methods for fixing the cables have been studied. For example, Patent Document 1 discloses a configuration in which a slit is provided in a printed circuit board and the cable is fixed by passing the cable through the slit.

Registered Utility Model No. 3001056

  However, in recent years, power supply devices and the like have been downsized, and printed circuit boards have also been downsized. For this reason, it is often difficult to provide a slit for fixing the cable at a position different from the mounting area of the electronic component on the printed circuit board. Moreover, when a slit is made in the printed circuit board as described in Patent Document 1, the strength of the printed circuit board is lowered. For this reason, the method described in Patent Document 1 is difficult to apply to in-vehicle components and the like that are required to have high reliability.

  The present invention has been made in view of the above, and an object thereof is to provide a cable support structure capable of suitably supporting a cable and a power supply device including the cable support structure.

  In order to achieve the above object, a cable support structure according to the present invention is formed on a base plate, formed with a groove portion that opens to an upper surface and penetrates from a first side surface to a second side surface facing the first side surface. A cable guide member for housing the cable, and a cover member that covers the groove portion of the cable guide member and is fixed in contact with the upper surface of the cable guide portion, and the groove portion includes The width and depth are larger than the diameter of the cable, and the cable is movable.

  According to the above cable support structure, the cable is accommodated in the groove provided in the cable guide member, and the upper surface of the groove is covered and fixed by the cover member, so that the cable can be suitably moved in the groove. Supported. Further, as compared with the conventional cable support structure, processing such as providing a slit in the printed circuit board is not required, and the cable can be suitably supported even in an in-vehicle component that requires high reliability.

  Here, at least one side of the upper surface of the cable guide member sandwiching the groove portion includes a protruding portion protruding upward, and the cover member is provided with an opening corresponding to the protruding portion. can do.

  As described above, the cable is sandwiched between the upper surface of the cable guide member and the cover member by fixing the cover member to the cable guide member by the protrusion and the opening corresponding to the protrusion. Without being accommodated in the groove. Therefore, the possibility that the cover member is fixed to the cable guide member can be reduced, and the cable can be supported more suitably.

  Moreover, it can also be set as the aspect by which a part of side wall of the said projection part and the inner wall of the said groove part are formed on the same surface. In this case, the possibility that the cable is sandwiched between the upper surface of the cable guide member and the cover member can be further reduced.

  Moreover, it can also be set as the aspect provided with the said projection part on both sides of the upper surface of the said cable guide member which pinched | interposed the groove part. As described above, by providing the protrusions on both sides of the upper surface of the cable guide member sandwiching the groove portion, the possibility that the cable is sandwiched between the upper surface of the cable guide member and the cover member can be further reduced. . Furthermore, by adopting a structure in which two or more protrusions are inserted into the opening and the cover member is fixed, the movement of the cover member with respect to the cable guide member is suppressed, and the cable is supported more suitably. Can do.

  Moreover, it is preferable that the connection area | region of the surface of the said cable guide member and the inner wall of the said groove part is chamfered. As described above, by chamfering the cable, it is possible to prevent the cable from being damaged by the cable guide member.

  The cable guide member may be integrally formed with the base plate.

  The power supply device according to the present invention is a power supply device in which an electronic component is placed on a base plate, which is fixed on the base plate, opens on the upper surface, and faces the first side surface from the first side surface. A cable guide member for accommodating a cable formed with a groove portion penetrating to the second side surface, covering the groove portion of the cable guide member, and being in contact with and fixed to the upper surface of the cable guide portion. And a cover member that comes into contact with the upper surface of the electronic component from above.

  According to the power supply device described above, the cable is housed in the groove portion provided in the cable guide member, and the upper surface of the groove portion is covered and fixed by the cover member, so that the cable is preferably supported in a movable state inside the groove portion. Is done. Further, as compared with the conventional cable support structure, processing such as providing a slit in the printed circuit board is not required, and the cable can be suitably supported even in an in-vehicle component that requires high reliability. Furthermore, the cover member functions as a member for supporting the electronic component by having a configuration in which the cover member is in contact with the upper surface of the electronic component from above.

  ADVANTAGE OF THE INVENTION According to this invention, the cable support structure which can perform the support of a cable suitably, and a power supply device provided with this cable support structure are provided.

It is a perspective view which shows a part of power supply device provided with the cable support structure which concerns on this embodiment. It is a perspective view which shows the base plate and the cable guide member in the power supply device shown in FIG. It is a perspective view which shows the structure of a cover member. It is a perspective view explaining attachment to the cable guide member of a cover member. It is a side view which illustrates typically the composition at the time of attaching a cover member to a cable guide member. It is a figure explaining the modification of a cable guide member and a cover member.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is an exploded perspective view showing a schematic configuration of a part of the power supply device according to the present embodiment. FIG. 2 is a perspective view showing a base plate and a cable guide member in the power supply device shown in FIG.

  The power supply device 1 according to the present embodiment is used as, for example, a switching power supply device incorporated in a vehicle battery charger or the like. The power supply device 1 includes a housing 10, a transformer 12, and a cable 13. The power supply device 1 includes a configuration in which each component constituting the power supply device including the transformer 12 is housed in a case. Specifically, an input capacitor, a switching element, a main transformer, a choke coil, an output capacitor, and the like are accommodated, and these components are connected by a conductive member such as a cable, a bus bar, or a printed circuit board pattern. Functions as a DC converter.

  In FIG. 1, only the area | region containing the transformer 12 which is one of the electronic components among the said power supply devices 1 and the connection cable 13 connected with respect to an electronic component is shown, and description is described about another area | region. Omitted. For example, the housing 10 includes a base plate 11, a side wall that surrounds the base plate 11, and a lid that covers the side wall from above, but only the base plate 11 is shown in FIG. 1.

  A cable guide member 20 and a cable wall member 30 are provided on the base plate 11. In the power supply device 1 according to the present embodiment, the cable guide member 20 and the cable wall member 30 are integrally formed with the base plate 11 so as to be fixed on the base plate 11, but are separate members. It may be fixed on the base plate 11. A cover member 40 is fixed to the upper surface of the cable guide member 20 with screws 51.

  As shown in FIG. 2, the cable guide member 20 is formed with a groove 23 that opens to the upper surface and penetrates from the first side surface 21 to the second side surface 22 that faces the first side surface 21. The groove 23 is provided to accommodate the cable 13. The width and depth of the groove 23 are larger than the diameter of the cable 13, and the cable 13 can move in a direction different from the axis of the cable.

  In order to prevent the cable 13 from being damaged, the bottom surface 23A and the side wall 23B of the groove 23 and the connecting line region of the first side surface 21 and the connection region of the second side surface 22 are provided with C chamfering or R chamfering. Preferably it is.

  By forming the groove portion 23 in the cable guide member 20, the upper surface of the cable guide member 20 is divided into the first upper surface 24A and the second upper surface 24B. Among these, two protrusions 25 and 26 and a screw hole 27 projecting upward are formed on the second upper surface 24B. Among these, the protrusion 25 is provided at a position where the side surface is substantially flush with the side wall 23 </ b> B of the groove 23, that is, at a position close to the side wall 23 </ b> B of the groove 23. Further, the protrusion 26 is provided to prevent the cover member 40 from rotating.

  The cable wall member 30 provided on the base plate 11 is a convex portion for preventing the cable 13 from coming into contact with another electronic component, the side wall of the housing 10 or the like when the cable 13 is attached. The function of the cable wall member 30 will be described later.

  Next, the cover member 40 will be described with reference to FIG. The cover member 40 is formed by molding a metal plate, and is centered on the through hole 41 for fixing to the screw hole 27 of the cable guide member 20 with a screw 51 in a predetermined direction. The groove cover portion 42 for covering the groove portion 23 of the extended cable guide member 20 and the core support portion 43 extending in a direction different from the groove cover portion 42 are configured.

  The width of the cover portion 42 corresponds to the width of the cable guide member 20 (the distance between the first side surface 21 and the second side surface 22). Further, the side edges 42A and 42B along the extending direction from the through hole 41 are bent so as to be rounded upward to prevent the cable 13 from being damaged when contacting the cable 13. . The groove cover portion 42 is provided with a through hole 44 corresponding to the protruding portion 25 of the cable guide member 20.

  The core support portion 43 is formed by bending along a fold line orthogonal to the extending direction of the plate-like member, and as a spring-like support tool that presses against the core of the transformer 12 from above at the end portion 45. Function.

  Further, a notch 46 corresponding to the shape of the protrusion 26 is provided at the periphery of the through hole 41 at a position corresponding to the protrusion 26 of the cable guide member 20.

  A configuration when the cover member 40 is attached to the cable guide member 20 will be described with reference to FIGS. 4 and 5. FIG. 4 is a perspective view in which only the screw 51 is disassembled, and FIG. 5 is a side view thereof.

  When the cover member 40 is attached to the cable guide member 20, both the upper surfaces 24 </ b> A and 24 </ b> B sandwiching the groove portion 23 of the cable guide member 20 come into contact with the cover member 40 with the connection cable 13 being accommodated in the groove portion 23. (The connection cable is omitted in FIG. 4). Then, the protrusion 25 is inserted into the through hole 44 of the cover member, and the cover member 40 is attached to the cable guide member 20 so that the protrusion 26 corresponds to the notch 46. The cover member 40 is fixed to the cable guide member 20 by attaching the screws 51 to the through holes 41 and the screw holes 27 in the state. At this time, even if the screw 51 is loosened, the protrusions 25 and 26 of the cable guide member 20 are provided, so that the rotation of the cover member 40 can be suppressed.

  4 and 5, the end 45 of the core support 43 abuts against the upper surface of the core of the transformer 12. And the end 45 presses the core upper surface of the transformer 12 by being fixed by the screw 51. That is, the core support portion 43 has a function of pressing the core of the transformer 12 against the base plate 11 and fixing the transformer 12.

  At this time, as shown in FIG. 5, the groove cover portion 42 covers the upper surface of the groove portion 23 of the cable guide member 20 and is fixed in contact with the upper surfaces 24 </ b> A and 24 </ b> B of the cable guide member 20. The cable 13 is accommodated in the groove portion 23 so as to be movable in a direction different from the axial direction. In addition, since the upper surfaces 24A and 24B of the cable guide member 20 and the groove cover portion 42 are fixed when they are attached, the connection cable is connected between the cover member 40 and the upper surfaces 24A and 24B of the cable guide member 20. It can be prevented from being sandwiched between them. Moreover, when fixing the cable guide member 20 and the cover member 40 using the through-hole 44 and the projection part 25 penetrated by this, possibility that the cable 13 will be pinched | interposed between these can further be reduced. In particular, when the side surface of the protruding portion 25 is formed so as to be flush with the side wall of the groove portion 23, the possibility that the cable 13 is pinched is further reduced.

  And by using the wall member 30 for cables, as shown in FIG. 1, the movement of the cable 13 accommodated in the groove 23 can be suppressed, and the cable 13 is damaged due to contact with the side wall of the housing 10 or the like. Risk can be reduced.

  As described above, according to the power supply device 1 according to the present embodiment, the cable 13 is accommodated in the groove portion 23 provided in the cable guide member 20, and the upper surface of the groove portion 23 is covered by the groove cover portion 42 of the cover member 40. By fixing the cover member 40 in the state, the cable 13 is suitably supported in a state in which the cable 13 can move inside the groove portion 23. Further, when the cable 13 is supported, it is not necessary to process the electronic component such as providing a slit in the printed board. Therefore, according to the cable support structure in the power supply device 1 described above, the cable 13 can be favorably supported even in an in-vehicle component or the like that requires high reliability.

  Further, according to the power supply device 1 described above, the cover member 40 has a configuration in which the cover member 40 comes into contact with the upper surface of the core of the transformer 12 from above, so that the cover member 40 also functions as a member that supports the electronic component. Reduction and downsizing of the power supply device can be promoted.

  As mentioned above, although embodiment of this invention was described, the cable support structure and power supply device which concern on this invention are not limited to the above, A various change can be performed.

  For example, in the above-described embodiment, the cable guide member 20 has been described as being integrally molded with the base plate 11, but the same cable support structure as that of the above-described embodiment is realized using the cable guide member 20 that is separate from the base plate 11. You can also

  Various modifications can be made to the method of attaching the cover member 40 to the cable guide member 20. For example, a method of fixing the cable guide member 20 and the cover member 40 using an adhesive or the like can be used.

  Here, three modified examples according to the cable support structure will be described with reference to FIGS. In FIG. 6, a cable guide member 60 having a concave shape and having a groove 61 that accommodates the cable 13 in the center, and two upper surfaces 62A and 62B sandwiching the groove 61 of the cable guide member 60 are schematically illustrated. The description will be made with reference to a plate-like cover member 70 that abuts against and is fixed.

  First, in FIG. 6A, as in the present embodiment, a screw hole 64 is formed in one upper surface 62B across the groove 61 of the cable guide member 60, and the screw hole 64 is also formed in the cover member 70. A corresponding opening 71 is formed, and a cable support structure is shown in which a screw 75 is inserted and fixed thereto. In this case, the cover member 70 and the upper surface 62A, 62B of the cable guide member 60 can be fixed by the screw 75 in a state where the cover member 70 is in contact with the upper surface 62A, 62B. 70 may rotate about the screw 75 as an axis.

  Next, in FIG. 6B, protrusions 65 and 66 are formed at positions close to the groove 61 on the upper surfaces 62A and 62B on both sides of the groove 61 of the cable guide member 60, and correspond to the protrusion. Openings 72 and 73 are formed. A screw hole 64 is formed in the upper surface 62B, and an opening 71 corresponding to the screw hole 64 is also formed in the cover member 70. A cable support structure in which a screw 75 is inserted and fixed to the cable guide member 60 and the cover member 70 is shown. In this case, since the cover member 70 is attached to the protrusions 65 and 66 and the cable guide member 60 and the cover member are fixed in contact with each other, the cable 13 is interposed between the cover member 70 and the upper surfaces 62A and 62B of the cable guide member 60. The possibility of being caught in is very low. Further, the rotation of the cover member 70 can be suppressed by the protrusions 65 and 66. In addition, when not using screw fixation, it is preferable to use another method (adhesive etc.) as a method of fixing a cover member with respect to a cable guide member.

  As shown in FIG. 6 (C), among the upper surfaces 62A and 62B on both sides of the cable guide member 60 with the groove 61 interposed therebetween, one side uses a screw 75 and the other side uses a protrusion 65. You can also. As described above, various modifications can be made to the method of attaching the cover member to the cable guide member.

  Moreover, although the said embodiment demonstrated the case where the cable support structure which concerns on this embodiment was applied with respect to the power supply device 1, it can also apply with respect to another apparatus.

  Moreover, in the said embodiment, although the core support part 43 of the cover member 40 is set as the structure which presses the core of the transformer 12 from upper direction, the structure contact | abutted from the upper direction with respect to another electronic component may be sufficient. Further, the cover member 40 may be configured without including the core support portion 43.

DESCRIPTION OF SYMBOLS 1 ... Power supply device, 10 ... Housing, 11 ... Base plate, 12 ... Transformer, 13 ... Cable, 20, 60 ... Cable guide member, 21 ... 1st side surface, 22 ... 2nd side surface, 23 ... Groove part, 25, 26 ... Projection part, 30, 70 ... Wall member for cable, 40 ... Cover member, 41 ... Groove cover part, 43 ... Core support part, 51, 75 ... Screw

Claims (6)

A power supply device in which electronic components are placed on a base plate,
A cable guide member for accommodating a cable fixed on the base plate and having a groove formed through the first side surface to the second side surface facing the first side surface;
A cover member that covers the groove portion of the cable guide member, is in contact with and fixed to the upper surface of the cable guide member, and is in contact with the upper surface of the electronic component from above;
A power supply apparatus comprising: On at least one side of the upper surface of the cable guide member sandwiching the groove, a protrusion projecting upward is provided,
The power supply device according to claim 1, wherein the cover member is provided with an opening corresponding to the protrusion. The power supply device according to claim 2, wherein a part of the side wall of the protrusion and the inner wall of the groove are formed on the same surface. The power supply device according to claim 2, wherein the protrusion is provided on both sides of the upper surface of the cable guide member with the groove interposed therebetween. The power supply device according to claim 1, characterized in that the connection area between the surface and the grooves of the inner wall of the cable guide member is chamfered. The power supply apparatus according to claim 1 , wherein the cable guide member is integrally formed with the base plate.

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