JP2008177272A - Component fitting device and electronic apparatus with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stably and surely hold a noise removal filter that is attached to a power cord of acoustic equipment, thereby eliminating the fluctuation of the filter. <P>SOLUTION: A holding wall 16 is formed on the outer side part of a mold chassis 10, and a square opening 17 is formed on the holding wall 16. A receiving rib 18 is provided on the front side of the holding wall 16 wherein the square opening 17 is formed. A noise removal filter 33 attached to the power cord 30 is received by the receiving rib 18, and a part of the rear surface of its outer periphery is made to enter the square opening 17 of the holding wall 16. The power cord 30 led out from both ends of the noise removal filter 33 is pressed by an elastic piece 22 so that it may be pressed down to receiving members 24 located at both sides of the receiving rib 18, and the upper end of the power cord 30 is firmly engaged with a locking claw 23. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a component mounting device and an electronic device including such a component mounting device, and more particularly to a component mounting device configured to mount a component by a chassis and an electronic device including such a component mounting device.

  For example, as disclosed in Japanese Utility Model Publication No. 2-33485 and Japanese Utility Model Publication No. 5-4422, a noise removal filter using a cylindrical ferrite core is conventionally known. In this type of filter, for example, a cylindrical ferrite is fitted around the outer periphery of the power cord, and the noise current flowing through the power cord is absorbed by the ferrite constituting the noise elimination filter. The noise current flowing through the power supply line is absorbed by the ferrite core of the noise removal filter, so that the generation of noise is prevented.

The ferrite core of such a noise removal filter is divided into two in the circumferential direction for convenience of attachment to the power cord, and is assembled by joining the semi-cylindrical ferrite cores of 180 degrees each. In order to assemble such a semi-cylindrical ferrite core into a cylindrical shape, a pair of semi-cylindrical cases are coupled to each other via a hinge portion. However, this type of conventional noise elimination filter has been used as it is, with the power cord attached so as to pass through. Therefore, the ferrite core portion is particularly likely to be unstable and unstable. Therefore, for example, a method of fixing to a chassis or cabinet with a fixing wire or the like has been adopted. Such a fixing method is not only uncertain, but also has problems such as inferior assembling property and variation in assembling position because the noise removing filter is manually fixed to a predetermined part. . Also, such a fixing method has a drawback that the noise removal filter cannot always be held stably.
Japanese Utility Model Publication No. 2-33485 Japanese Utility Model Publication No. 5-4422

  An object of the present invention is to provide a component mounting device that can securely hold a component at a predetermined site, and an electronic device including such a component mounting device.

  Another object of the present invention is to provide a component mounting apparatus in which a noise removal filter mounted on a power cord is securely fixed to a predetermined site, and an electronic apparatus including such a component mounting apparatus. .

  Still another object of the present invention is to provide a component mounting device that securely mounts and automatically mounts components as necessary, and an electronic device including such a component mounting device. .

  The above-described problems and other problems of the present invention will be clarified by the technical idea of the present invention and the embodiments thereof described below.

The main invention of the present application is a component in which flexible leads are drawn from both ends,
A chassis provided with an open part, a holding part for storing and holding a component inserted through the open part, and an elastic piece having a locking claw for locking the lead at the tip;
The component mounting apparatus is characterized in that the lead is biased in a direction different from the direction of the open portion by the elastic piece and the component is held by the holding portion.

  Here, the component may be a noise removal filter made of a cylindrical magnetic material. The lead may be a power cord. The chassis may be a molded chassis that integrally includes the holding portion and the locking claw. The mold chassis may be provided with a holding wall integrally, and a part of the part may be received by an opening formed in the holding wall. A receiving rib may be formed inside the opening of the holding wall of the mold chassis, and the bottom of the component may be received by the receiving rib, and the upper portion of the receiving rib may constitute the holding portion.

Another main invention of the present application is an electronic device in which a mold chassis is assembled in a cabinet, a circuit board is attached to the mold chassis, and a power cord is connected to a power circuit of the circuit board.
The present invention relates to an electronic apparatus, wherein a noise removal filter made of a cylindrical magnetic material is attached to the power cord, and the noise removal filter is held by a holding portion of the mold chassis.

  Here, the electronic device may be an audio device. The holding portion may include a receiving rib that receives a bottom portion of the noise removal filter, and an opening of a holding wall that receives an outer portion of the noise removal filter. Further, the power cord may be pulled out from both ends of the noise removing filter, and the power cord may be locked by the locking claws so as to be pressed against the receiving member. Further, the power cord may be bent in the radial direction with respect to the center of the noise removal filter and locked with the locking claw. In addition, it is preferable that locking claws are provided at both ends of the holding portion that holds the noise removal filter, and that the distance between the locking claws on both sides from the end surface of the noise removal filter is different from each other.

  The main invention of the present application is a part in which flexible leads are pulled out from both ends, an opening part, a holding part for storing and holding a part inserted through the opening part, and a locking claw for locking the lead. And a chassis provided with an elastic piece. The lead is biased in a direction different from the direction of the open portion by the elastic piece, and the component is held by the holding portion.

  Therefore, according to such a component mounting apparatus, by inserting the component from the open portion toward the holding portion, and by locking the leads drawn out on both sides of the component with the locking claws on the distal end side of the elastic piece, The component is stably held by the holding portion.

  Another main invention of the present application is an electronic device in which a mold chassis is assembled in a cabinet, a circuit board is attached to the mold chassis, and a power cord is connected to a power circuit of the circuit board. A noise removal filter made of a cylindrical magnetic material is attached, and the noise removal filter is held by a holding portion of the mold chassis.

  Therefore, according to such an electronic device, the noise removal filter made of a magnetic material attached to the power cord is held by the holding portion of the mold chassis. It becomes possible to hold it stably without changing it.

  The present invention will be described below with reference to embodiments shown in the drawings. FIG. 1 shows an overall configuration of a component mounting apparatus according to the present embodiment. This component mounting apparatus includes a mold chassis 10. That is, a molded chassis 10 that is incorporated into a cabinet of an electronic device and is integrally formed of, for example, ABS resin is used. The mold chassis 10 is surrounded on its three sides by side walls 11 and the bottom is constituted by a bottom plate 12. A mounting leg 13 extending downward is extended to the bottom plate 12, and the mold chassis 10 is attached to a predetermined position of the cabinet by the mounting leg 13.

  As shown in FIGS. 2 and 3, a rectangular holding wall 16 is formed on the side surface of the mold chassis 10 where the side wall 11 is not formed. The holding wall 16 is slightly smaller than the opposing side wall 11. The holding wall 16 is formed with a horizontally long rectangular opening 17. A pair of receiving ribs 18 are erected in parallel with each other on the bottom plate 12 inside the holding wall 16 having the rectangular opening 17. The end of the receiving rib 18 is reinforced by a reinforcing rib 19 orthogonal to the receiving rib 18.

  Elastic pieces 22 are erected on the bottom plate 12 inside the holding wall 16 and on both sides of the receiving rib 18. And the elastic piece 22 is each provided with the latching claw 23 in the upper end. A receiving member 24 is erected on the bottom plate 12 so as to face such a locking claw 23. The receiving member 24 is integrally formed with ribs 25 on the base side and on both sides.

  The receiving rib 18 forms a holding portion inside the holding wall 16, and a noise removal filter 33 attached to the power cord 30 is held in the holding portion. The power cord 30 has a plug 31 connected to the tip side portion. The other end of the power cord 30 is connected to a power circuit on a circuit board attached to the mold chassis 10 to supply commercial power.

  Next, the noise removal filter 33 attached to the power cord 30 and absorbing the noise current flowing through the power cord 30 will be described with reference to FIGS. The noise removing filter 33 includes a semi-cylindrical case body 35 and a semi-cylindrical lid body 36. The lids 35 and 36 are integrally formed of a synthetic resin such as polypropylene via a hinge part 37 and are opened and closed by the hinge part 37. In addition, semicircular cuts 38 are formed in the side walls at both ends in the axial direction of the case main body 35 and the lid 36, respectively, and the power cord is formed by a circular insertion portion formed by aligning the cuts 38. 30 is inserted.

  A pair of small rectangular protrusions 39 are formed on the outer peripheral surface of the case body 35 opposite to the hinge portion 37. A locking piece 40 having a small rectangular opening for receiving such a protrusion 39 is attached to the tip of the lid 36 opposite to the hinge portion 37. As shown in FIGS. 4 and 6, the case body 35 and the lid body 36 are respectively accommodated with ferrite cores 41 and 42 that are semi-cylindrical and divided into two at 180 degrees. It has become.

  Accordingly, with the ferrite cores 41 and 42 housed in the case body 35 and the lid body 36, respectively, the lid body 36 is rotated 180 degrees at the hinge portion 37 with respect to the case body 35, and the tip of the lid body 36 is By engaging the opening portion of the locking piece 40 on the side with the protrusion 39 of the case main body 35, the case is closed as shown in FIGS. The split surfaces of the ferrite cores 41 and 42 are in contact with each other to form a cylindrical ferrite core. In addition, as shown in FIG. 6, the power cord 30 is inserted through the central hole 43 at the center side of the ferrite cores 41 and 42. In the present embodiment, the power cord 30 is drawn out from both ends of the noise removal filter 33 after being inserted through the center hole 43 of the ferrite cores 41 and 42 in a loop shape.

  The noise removing filter 33 attached to the power cord 30 is held by the holding portion of the mold chassis 10 as shown in FIGS. That is, the bottom portion of the noise removing filter 33 is received by the receiving rib 18 formed integrally with the bottom plate 12 of the mold chassis 10. In addition, the outer portion of the back side of the noise removal filter 33 is held so that a part thereof enters the rectangular opening 17 of the holding wall 16. Further, the power cord 30 drawn from both ends of the noise removing filter 33 is engaged by the engaging claw 23 at the tip of the elastic piece 22 so as to be pressed against the receiving member 24 integrally provided to the bottom plate 12. Will be stopped. Therefore, the noise removal filter 33 held by the upper surface of the receiving rib 18 and the rectangular opening 17 of the holding wall 16 is stable because the power cords 30 at both ends are locked by the locking claws 23 of the elastic piece 22. The holding state will be maintained.

  FIG. 9 shows an operation of attaching the noise removing filter 33 to the holding portion. The noise removing filter 33 is attached to the power cord 30 from the open portion on the bottom plate 12 of the mold chassis 10 and on the upper side of the receiving rib 18. The noise removal filter 33 is moved obliquely downward (see FIG. 9A). In this state, the noise removal filter 33 is placed on the upper portion of the receiving rib 18 and a part of the outer peripheral side on the back side is inserted into the rectangular opening 17 of the holding wall 16 as shown in FIG. 9B. . At this time, the power cord 30 is bent upward.

  In this way, the power supply cord 30 drawn from both sides of the noise removal filter 33 in the state where the noise removal filter 33 is received on the rib 18 and a part thereof is received in the rectangular opening 17 of the holding wall 16. It is locked by the locking claw 23 of the elastic piece 22 so as to be pressed by 24. In this operation, as indicated by a chain line in FIG. 9B, the elastic piece 22 is elastically deformed rightward in the drawing to increase the distance between the receiving member 24 and the power cord 30 is received by the elastic piece 22 in this state. It inserts between the members 24. After that, the elastic piece 22 is moved to the left by its elastic restoring force and is locked by the locking claw 23 on the distal end side as shown in FIG. 9C. The receiving member 24 is provided with ribs 25 on the base side portion and on the back side portion, so that the receiving member 24 has high rigidity and hardly deforms. On the other hand, since the elastic piece 22 is not provided with such a rib, it is easily elastically deformed as shown by a chain line in FIG. 9B. Therefore, the power cord 30 can be locked by the locking claw 23 of the elastic piece 22 by such elastic deformation. Since the locking claw 23 presses the upper end of the power cord 30, the noise removal filter 33 is on the upper side and does not come off to the open side.

  According to the mounting structure of the noise removal filter 33 according to such an embodiment, the noise removal filter 33 is securely held by the holding portion of the mold chassis 10. No change or wobbling. Further, it is not necessary to manually fix the noise removing filter 33 or the power cord 30 with a wire or the like. As shown in FIG. 9, since the noise removal filter 33 can be held on the holding portion of the mold chassis 10 through the open portion from obliquely above, automatic assembly is also possible. Further, since the mounting position of the noise removal filter 33 is uniquely determined, it is possible to prevent interference with other components.

  Although the present invention has been described above with reference to the illustrated embodiments, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea of the present invention. For example, the shape or size of the rectangular opening 17 or the receiving rib 18 of the holding wall 16 for mounting the noise removal filter 33 in the above embodiment may be changed as appropriate according to the structure and size of the noise removal filter 33. Can do. Also, the holding position of the noise removal filter 33 on the mold chassis 10 can be changed as appropriate in relation to the attachment of other components, for example, a printed circuit board or other components.

  The present invention can be used to attach a noise removal filter in an audio device.

It is an external appearance perspective view of a mold chassis. It is principal part sectional drawing of the mold chassis. It is a principal part top view of the mold chassis. It is a disassembled perspective view of a noise removal filter. It is an assembly perspective view of the noise removal filter. It is a longitudinal cross-sectional view of the noise removal filter. It is a perspective view which shows the attachment with respect to the mold chassis of a noise removal filter. It is the principal part front view. It is a principal part longitudinal cross-sectional view which shows the attachment operation | movement of a noise removal filter.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Mold chassis, 11 ... Side wall, 12 ... Bottom plate, 13 ... Mounting leg, 16 ... Holding wall, 17 ... Rectangular opening, 18 ... Receiving rib, 19 ... Reinforcement rib, 22 ... Elastic piece, 23 ... Locking claw, 24 ... receiving member, 25 ... rib, 30 ... power cord, 31 ... plug, 33 ... noise removal filter, 35 ... case body, 36 ... lid, 37 ... hinge part, 38 ... semicircular cut, 39 ... protrusion , 40 ... locking piece, 41, 42 ... ferrite core, 43 ... center hole

Claims (12)

Parts with flexible leads drawn from both ends,
A chassis provided with an open part, a holding part for storing and holding a component inserted through the open part, and an elastic piece having a locking claw for locking the lead at the tip;
The component mounting apparatus is characterized in that the lead is biased in a direction different from the direction of the open portion by the elastic piece, and the component is held by the holding portion.   The component mounting apparatus according to claim 1, wherein the component is a noise removal filter made of a cylindrical magnetic material.   The component mounting apparatus according to claim 1, wherein the lead is a power cord.   The component mounting apparatus according to claim 1, wherein the chassis is a molded chassis that integrally includes the holding portion and the locking claw.   The component mounting apparatus according to claim 4, wherein the mold chassis is integrally provided with a holding wall, and a part of the component is received by an opening formed in the holding wall.   A receiving rib is formed inside the opening of the holding wall of the mold chassis, and the bottom of the component is received by the receiving rib, and the upper part of the receiving rib constitutes the holding portion. The component mounting apparatus according to claim 5. In an electronic device in which a mold chassis is assembled in a cabinet, a circuit board is attached to the mold chassis, and a power cord is connected to a power circuit of the circuit board.
An electronic apparatus, wherein a noise removal filter made of a cylindrical magnetic material is attached to the power cord, and the noise removal filter is held by a holding portion of the mold chassis.   The electronic device according to claim 7, wherein the electronic device is an audio device.   The electronic device according to claim 7, wherein the holding portion includes a receiving rib that receives a bottom portion of the noise removal filter, and an opening of a holding wall that receives an outer portion of the noise removal filter.   10. The electronic apparatus according to claim 9, wherein a power cord is pulled out from both ends of the noise removal filter, and the power cord is locked with a locking claw so as to be pressed against the receiving member.   11. The electronic apparatus according to claim 10, wherein a power cord is bent in a radial direction with respect to the center of the noise removal filter and is locked by the locking claw.   11. The locking claw is provided at each end of the holding portion that holds the noise removal filter, and the distance between the locking claws on both sides from the end surface of the noise removal filter is different from each other. The electronic device described.

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