JP4068543B2 - Noise absorber - Google Patents

Description

  The present invention relates to a noise absorbing device that absorbs noise propagating in a flat cable.

  A flat cable is used to connect a personal computer and a display or the like in a communicable manner. And in order to implement | achieve information transmission with high precision, the noise absorber which absorbs the noise which propagates the inside of this flat cable with a magnetic body is used.

  In addition, such a noise absorbing device has been tried to be fixed at an appropriate location in order to prevent displacement in a state where the noise absorbing device is attached to the flat cable. For example, in the noise absorbing device disclosed in Patent Document 1 below, an insertion snap projects from the bottom surface of a clamp that accommodates the closed magnetic path core. On the other hand, a hole is formed on the fixed side where the noise absorbing device is fixed. The noise absorbing device is fixed by inserting the snap of the noise absorbing device into the hole on the fixed side with a pressing force.

Japanese Utility Model Publication No. 62-182513 (FIG. 3)

  However, in order to fix the conventional noise absorbing device, at least the length of the snap must be pressed to the fixing side from the state where it is attached to the flat cable. At this time, the length of pressing the flat cable must be bent. For this reason, when the tension | tensile_strength concerning a flat cable is high and it is hard to bend, it was difficult to fix a noise absorber to a predetermined part. In particular, since the demand for downsizing and space saving is increasing in recent electronic devices, the space for pressing the noise absorbing device is narrowed, which makes the operation more difficult.

  An object of the present invention is to provide a noise absorbing device that can be easily fixed to a predetermined portion even when a flat cable is difficult to bend.

The noise absorbing device according to the present invention has an insertion path through which a flat cable is inserted, and is formed of a magnetic material and absorbs noise propagating through the flat cable, a printed circuit board, and the printed circuit board. And a case for holding the absorbing member, and the case has a pair of arms for holding the connector. It can be attached to the connector and is slidable along a flat cable inserted through the insertion path.

According to the noise absorbing device of the present invention, after the flat cable is inserted through the insertion path of the absorbing member, the flat cable is slid toward the mounting board along the flat cable, so that the mounting can be performed on the mounting board. For this reason, it is not necessary to bend the flat cable connected to the connector when the noise absorbing device is mounted, and the noise absorbing device can be easily fixed to a predetermined portion even when the flat cable is difficult to bend. In addition, since the case has a pair of arms for holding the connector, when the noise absorbing device is slid along the flat cable to the mounting board side, the pair of arms will hold the connector. The absorber can be easily fixed.

  Further, the insertion path of the absorbing member may have a facing portion facing the flat cable, and the arm of the case may have an inclination with respect to the facing portion of the insertion path. As a result, even when the flat cable attached to the connector is bent, when the arm holds the connector, the arm can be made substantially parallel to the surface direction of the printed circuit board. Can be mounted on a mounting board.

  The insertion path of the absorbing member has a facing portion facing the flat cable, the arm of the case is provided with a hook portion having a locking surface locked to the connector at the tip, and the locking surface of the hook portion is The inclination may be inclined with respect to the facing portion of the insertion path. As a result, even if the flat cable connected to the connector is bent, the locking surface of the hook portion and the connector can be brought into surface contact with each other, so that the fixing force of the noise absorbing device to the connector is increased. Can do.

  Further, the case may include a claw portion that extends to a side to be mounted on the mounting board and sandwiches an end portion of the printed board with the arm when mounted on the mounting board. As a result, even when an external force is applied in the normal direction of the noise absorbing device when mounted on the mounting board, the claw portion comes into contact with the bottom surface of the printed circuit board, that is, the surface opposite to the side where the connector is provided. In addition, it is possible to prevent the noise absorber from being unexpectedly removed.

  In the noise absorbing device of the present invention, the case may be configured to be mounted on a printed board on a mounting board.

  Further, in this case, the printed board may have a protruding plate, and the case may be configured to be attachable to the plate.

  Further, in this case, the case may be configured to include a housing portion into which the plate having the hole portion is inserted, and a protrusion to be inserted into the hole portion of the plate inserted into the housing portion.

  When such a configuration is adopted, when the noise absorber is slid along the flat cable to the mounting board side, the printed board plate is accommodated in the accommodating part, and the protrusion of the case is inserted into the hole of the plate. Therefore, the noise absorbing device can be easily fixed. Moreover, the situation where the noise absorbing device is unexpectedly pulled out of the plate can be suppressed by the protrusion.

  The case includes a pair of support plates that can hold the printed circuit board, and at least one of the support plates may have a protrusion that is inserted into a hole formed in the printed circuit board. Good.

  When such a configuration is adopted, when the noise absorbing device is slid to the mounting board side along the flat cable, the pair of support plates sandwich the printed board from above and below, so the noise absorbing device can be easily fixed. Can be made. Moreover, the case where the protrusion of the case is inserted into the hole of the printed board can prevent the noise absorbing device from being unexpectedly removed from the printed board.

  According to the noise absorbing device of the present invention, even when the flat cable is difficult to bend, it can be easily fixed to a predetermined portion.

  Hereinafter, preferred embodiments of a noise absorber according to the present invention will be described in detail with reference to the accompanying drawings. In addition, the same code | symbol shall be used for the same element and the overlapping description is abbreviate | omitted.

[First Embodiment]
FIG. 1 is a perspective view showing a noise absorber 1 according to the first embodiment of the present invention, and FIG. 2 is a plan view of the noise absorber 1. The noise absorbing device 1 is attached to a flat cable that connects a personal computer, a display, and the like so as to be able to transmit information, and mainly includes an absorbing member 10 and a case 20 that holds the absorbing member 10. Here, the flat cable refers to a cable in which a plurality of electric wires covered with a resin or the like are bundled in a band shape, and is used for connection between electronic devices such as a personal computer, a display, and a printer. In addition, the flat cable is connected to a connector arranged on the printed circuit board, but the noise absorbing device 1 of the present embodiment is configured so that it can be attached to a mounting board constituted by the printed circuit board and the connector ( The method of mounting will be described later).

  The absorbing member 10 is formed of a magnetic material such as ferrite, for example, and absorbs noise propagating through the flat cable. The absorbing member 10 has a substantially rectangular parallelepiped shape, and an insertion passage 11 through which a flat cable is inserted is formed.

  FIG. 3 is a perspective view showing the case 20 with the absorbent member 10 removed. As shown in FIGS. 1 to 3, holding arms 22 and 22 that hold the absorbing member 10 protrude from both sides of the bottom plate 21 of the case 20. Side walls 23 and 24 project from the pair of sides of the bottom plate 21 of the case 20 on the side where the holding arms 22 and 22 are not provided. The absorbing member 10 is fixed to the case 20 by being held between the side walls 23 and 24 and being held down by the holding arms 22 and 22.

  The case 20 includes a pair of arms 25 and 25 on both sides thereof. Each arm 25 has flexibility, and extends in parallel with the surface direction of the bottom plate 21 of the case 20 and the insertion path 11 of the absorbing member 10. The extending side of the arm 25 is attached to the mounting board. At the tip of each arm 25, a hook portion 26 having a locking surface 26a that is locked to a connector described later is formed. Further, the surfaces of the hook portions 26, 26 facing each other are inclined surfaces 26 b whose intervals gradually increase toward the distal end side of the arm 25.

  Further, a pair of claws 28, 28 extending in the same direction as the extending direction of the arm 25, that is, on the side to be mounted on the mounting board, are formed on the bottom portion of the case 20 with a space from each arm 25, 25. ing. As will be described in detail later, when the noise absorbing device is mounted on the mounting substrate, the end portion of the printed board is sandwiched between the arms 25 and 25 and the claw portions 28 and 28.

  The above is the configuration of the noise absorber of this embodiment. Next, with reference to FIGS. 4 to 6, a method of mounting the noise absorbing device on the mounting substrate will be described.

  FIG. 4 is a perspective view showing a state before the noise absorbing device 1 is mounted on the mounting board. The mounting substrate 40 to be mounted includes a printed circuit board 42 and a connector 45 disposed thereon.

  First, as shown in FIG. 4, the flat cable 30 inserted through the insertion passage 11 of the absorbing member 10 is connected to the connector 45. At this time, the arms 25 and 25 are set to face the mounting substrate 40 side. In this specification, the surface of the connector to which the flat cable is connected is referred to as a front surface 45a, and the opposite surface is referred to as a rear surface 45b.

  Next, as shown in FIGS. 5 and 6, the noise absorber 1 is slid along the flat cable 30 toward the mounting board 40 as indicated by the white arrows in the drawings, and the noise absorber is placed on the mounting board 40. Wear 1 FIG. 5 is a perspective view showing a state in which the noise absorbing device 1 is mounted on the mounting substrate 40, and FIG. 6 is a side view showing the same state.

  Here, the mounting process of the noise absorber 1 will be described in detail. First, when the noise absorbing device 1 is pressed toward the mounting substrate 40, the inclined surfaces 26 b of the hook portions 26 of the arms 25, 25 abut against both corners of the front surface 45 a of the connector 45. When the noise absorbing device 1 is further pressed, the arms 25 and 25 are pushed outward while the inclined surface 26 b is in contact with the connector 45. When the noise absorbing device 1 is pressed to a position where the locking surface 26a of the hook portion 26 exceeds the rear surface 45b of the connector 45, the arms 25 and 25 are restored to the original state by the elastic force accumulated by the bending. Hold 45. At this time, since the locking surface 26a of the hook portion 26 abuts on the rear surface 45b of the connector 45, unintentional withdrawal in the extending direction of the arm 25 of the noise absorbing device 1 is prevented.

  As described above, according to the noise absorbing device 1 of the present embodiment, after the flat cable 30 is inserted through the insertion path 11 of the absorbing member 10, the flat cable 30 is slid toward the mounting substrate 40 along the flat cable 30. It can be mounted on the mounting substrate 40. Therefore, it is not necessary to bend the flat cable 30 connected to the connector 45 when the noise absorbing device 1 is mounted, and the noise absorbing device 1 can be easily fixed to a predetermined portion even when the flat cable 30 is difficult to bend. can do. The noise absorbing device of the present embodiment that exhibits such an effect is particularly useful when it is difficult to bend because the tension applied to the flat cable is high, or when the space for mounting the noise absorbing device is narrow.

  As shown in FIG. 6, when the noise absorbing device 1 is mounted, the end portion of the printed circuit board 42 is sandwiched between the arms 25 and 25 and the claw portions 28 and 28. Thereby, for example, even when an external force is applied in the normal direction of the noise absorbing device 1, the claw portion 28 contacts the bottom surface of the printed circuit board 42, that is, the surface opposite to the side where the connector 45 is provided, Unexpected removal of the noise absorbing device 1 can be prevented.

[Second Embodiment]
Next, a second embodiment of the noise absorbing device according to the present invention will be described with reference to FIGS.

  First, the configuration of the noise absorbing device of the present embodiment will be described with reference to FIGS. FIG. 7 is a perspective view showing the noise absorbing device 1 of the present embodiment, FIG. 8 is a perspective view of the noise absorbing device 1 viewed from the bottom side, and FIG. 9 is the noise absorbing device 1 shown in FIG. FIG. 6 is a cross-sectional view taken along line IX-IX.

  The absorbent member 10 is the same as that of the first embodiment, and the configuration of the case 20 is different from that of the first embodiment. In addition, the noise absorbing device 1 of the present embodiment is configured to be mounted on the printed board 42 of the mounting board 40. More specifically, the noise absorbing device 1 is attached to a plate 46 provided on the printed board 42 and protruding outward. A hole 47 is formed in the central region of the plate 46 in the width direction.

  Further, in the case 20 of the present embodiment, a substantially L-shaped stopper 50 having a housing portion 29 for housing the plate 46 when the noise absorbing device is mounted on the mounting substrate 40 and a protrusion 50a at the tip (see FIG. 8 and FIG. 9). The protrusion 50 a of the stopper 50 is inserted into the hole 47 of the plate 46 when the plate 46 is inserted into the accommodating portion 29.

  As shown in FIG. 8, the accommodating part 29 is comprised from a pair of receiving part 29a, 29a by which the both ends of the plate 46 are each inserted. As shown in FIG. 8, each receiving portion 29 a includes a side wall 29 b that prevents lateral displacement with respect to the plate 46, a bottom portion 29 c that sandwiches both ends of the plate 46 between the bottom plate 21 of the case, and a front end surface of the plate 46. And a back wall 29d that will be opposed to each other. The interval between the side walls 29 b of the receiving portions 29 a is set to be approximately the same as the width direction of the plate 46.

  The stopper 50 is located between the receiving portions 29a, 29a, and a wall portion 50b standing on the bottom plate 21 of the case, and a plate portion extending in a cantilever state from the upper end in FIG. 8 of the wall portion 50b. 50c. The interval between the plate portion 50c and the bottom plate 21 of the case is set to be approximately equal to the interval between the bottom portion 29c of the receiving portion 29a and the bottom plate 21. The protrusion 50a is formed at the tip of the plate portion 50c. The protrusion 50 a protrudes toward the bottom plate 21 of the case 20, and is defined by a locking surface 50 d that extends in the normal direction of the bottom plate 21 and an inclined surface 50 e that is inclined with respect to the bottom plate 21.

  The above is the configuration of the noise absorber of this embodiment. Next, with reference to FIG.10 and FIG.11, the mounting method of this noise absorption apparatus is demonstrated.

  FIG. 10 is a perspective view showing a state before the noise absorbing device 1 is mounted on the mounting board. First, as shown in the figure, the flat cable 30 inserted through the insertion passage 11 of the absorbing member 10 is connected to the connector 45.

  Next, as shown in FIG. 11, the noise absorbing device 1 is slid along the flat cable 30 as indicated by the white arrow in the drawing, and the noise absorbing device 1 is mounted on the mounting substrate 40. In addition, the figure has shown the state seen from the bottom face of the printed circuit board.

  Hereinafter, the mounting process of the noise absorbing device 1 will be described in detail. First, when the noise absorbing device 1 is pressed toward the mounting substrate 40 so that the plate 46 is inserted into the housing portion 29, the inclined surface 50 e of the protrusion 50 comes into contact with the tip of the plate 46. When the noise absorbing device 1 is further pressed, the plate portion 50 c of the stopper 50 is pushed upward in FIG. 8 while the inclined surface 50 e is in contact with the tip of the plate 46. When the noise absorbing device 1 is pressed to a position where the locking surface 50d of the protrusion 50 exceeds the edge of the hole 47 of the plate 46 far from the connector 45, the plate portion 50c of the stopper 50 is accumulated by bending. The original state is restored by the elastic force, and the protrusion 50 a is inserted into the hole 47 to be locked to the plate 46. At this time, since the locking surface 50d of the protrusion 50 abuts against the edge of the hole 47 of the plate 46, the noise absorbing device 1 is prevented from being unexpectedly pulled out in the extending direction of the plate 46.

  As described above, according to the noise absorbing device 1 of the present embodiment, after the flat cable 30 is inserted through the insertion path 11 of the absorbing member 10, the flat cable 30 is slid toward the mounting substrate 40 along the flat cable 30. It can be mounted on the mounting substrate 40. Therefore, it is not necessary to bend the flat cable 30 connected to the connector 45 when the noise absorbing device 1 is mounted, and the noise absorbing device 1 can be easily fixed to a predetermined portion even when the flat cable 30 is difficult to bend. can do. Moreover, since the plate | board 46 of the printed circuit board 42 is accommodated by the accommodating part 29, the position shift of a noise absorption apparatus can be prevented.

[Third Embodiment]
Next, with reference to FIGS. 12-14, 3rd Embodiment of the noise absorber which concerns on this invention is described.

  First, the configuration of the noise absorbing device of the present embodiment will be described with reference to FIGS. FIG. 12 is a perspective view showing the noise absorbing device 1 of the present embodiment, and FIG. 13 is a side view of the noise absorbing device 1.

  The absorbent member 10 is the same as that of the first embodiment, and the configuration of the case 20 is different from that of the first embodiment. In addition, the noise absorbing device 1 of the present embodiment is configured to be mounted on the printed board 42 of the mounting board 40. More specifically, the noise absorbing device 1 is attached to the printed circuit board 42 in which the holes 48 are formed.

  In the case 20 of the present embodiment, support portions 51 for mounting on the printed circuit board 42 are provided on both sides of the case 20 in the width direction, that is, on the side where the holding arm 22 is provided.

  Each of the support portions 51 includes a pair of upper and lower flexible support plates 51a that hold the printed circuit board 42 when mounted, and connects the pair of support plates 51a to each other and a front end surface of the printed circuit board 42. It includes an opposing wall 51b that will face each other. Further, the interval between the support plates 51 a arranged above and below is set to be approximately the same as the thickness of the printed circuit board 42.

  Further, at least one of the support plates 51a has a protrusion 52 that is inserted into the hole 48 of the printed circuit board 42 in the central region in the width direction of the support plate 51a. In this embodiment, the protrusion part 52 is formed in the bottom face of the upper side support plate 51a, and each protrusion part 52 is made into the cone shape. The diameter of the bottom surface of the projection 52 is set to a size that can be inserted into the hole 48 of the printed circuit board 42. Further, the interval between the protrusions 52 is equal to the interval between the holes 48 of the printed circuit board 42.

  The above is the configuration of the noise absorber of this embodiment. Next, a method for mounting the noise absorbing device will be described with reference to FIGS.

  FIG. 12 is a perspective view showing a state before the noise absorbing device 1 is mounted on the mounting board. First, as shown in the figure, the flat cable 30 inserted through the insertion passage 11 of the absorbing member 10 is connected to the connector 45. At this time, the printed circuit board 42 is inserted between the support plates 51 a and 51 a of the support portion 51.

  Next, as shown in FIG. 14, the noise absorbing device 1 is slid along the flat cable 30 as indicated by the white arrow in the drawing, and the noise absorbing device 1 is mounted on the mounting substrate 40. FIG. 3 is a perspective view showing a state where the noise absorbing device 1 is mounted on the mounting substrate 40.

  Hereinafter, the mounting process of the noise absorbing device 1 will be described in detail. First, when the noise absorbing device 1 is pressed against the mounting substrate 40 so that the printed circuit board 42 is inserted between the support plates 51a and 51a, the outer peripheral surface (conical surface) of the protrusion 52 comes into contact with the tip of the printed circuit board 42. . When the noise absorbing device 1 is further pressed, the support plate 51a of the support portion 51 is pushed upward in FIG. 14 while the protrusion 52 is in contact with the tip of the printed circuit board. When the noise absorbing device 1 is pressed to a position where the protrusion 52 is inserted into the hole 48 of the printed circuit board 42, the support plate 51a of the support 51 is restored to the original state by the elastic force accumulated by the bending and is supported. The protrusions 52 of the plate 51 a are locked to the printed circuit board 42 by being inserted into the holes 48. At this time, since the support plate 51a of the support portion 51 holds the printed board 42, the noise absorbing device 1 is prevented from being unexpectedly pulled out in the normal direction of the printed board 42. Furthermore, since the protrusion 52 is inserted into the hole 48, the positional shift of the noise absorbing device 1 in the surface direction of the printed circuit board 42 is prevented.

  As described above, according to the noise absorbing device 1 of the present embodiment, after the flat cable 30 is inserted through the insertion path 11 of the absorbing member 10, the flat cable 30 is slid toward the mounting substrate 40 along the flat cable 30. It can be mounted on the mounting substrate 40. Therefore, it is not necessary to bend the flat cable 30 connected to the connector 45 when the noise absorbing device 1 is mounted, and the noise absorbing device 1 can be easily fixed to a predetermined portion even when the flat cable 30 is difficult to bend. can do. Moreover, since the printed circuit board 42 is pinched by the support part 51, the position shift of a noise absorption apparatus can be prevented.

  Note that the plate 46 as in the second embodiment may be provided on the printed circuit board, and the plate 46 may be held between a pair of support plates.

[Fourth Embodiment]
Next, with reference to FIG. 15, FIG. 16 (a) and FIG. 16 (b), 4th Embodiment of the noise absorber which concerns on this invention is described.

  First, the configuration of the noise absorbing device of the present embodiment will be described with reference to FIG. FIG. 15 is a perspective view showing the noise absorbing device 1 of the present embodiment.

  The absorbent member 10 is the same as that of the first embodiment, and the configuration of the case 20 is different from that of the first embodiment. In addition, the noise absorbing device 1 of the present embodiment is configured to be attached to the connector 45 of the mounting substrate 40.

  The insertion passage 11 of the absorbing member 10 has a flat facing portion 12 that faces the flat cable when it is inserted. In addition, the case 20 of the present embodiment includes a pair of arms 25 and 25 on both sides in the width direction of the case 20. Each arm 25 has an inclination of 30 degrees with respect to the facing portion 12 of the insertion path 11. That is, each arm 25 is inclined with respect to the bottom surface 21 of the case 20. The arms 25 are parallel to each other. Similarly to the first embodiment, a hook portion 26 having a locking surface 26 a that is locked to the connector 45 is formed at the tip of each arm 25. Moreover, the mutually opposing surface of each hook part 26 and 26 is the inclined surface 26b which a space | interval gradually spreads toward the outer side with respect to the longitudinal direction of an arm.

  The above is the configuration of the noise absorber of this embodiment. Next, a method for mounting the noise absorbing device will be described with reference to FIGS. 16 (a) and 16 (b).

  First, as shown in FIG. 16A, the flat cable 30 inserted through the insertion passage 11 of the absorbing member 10 is connected to the connector 45. At this time, as shown in the figure, the flat cable 30 may bend depending on the position of the device connected through the connector 45 and the flat cable 30.

  Next, as shown in FIG. 16B, the noise absorbing device 1 is slid along the flat cable 30 to mount the noise absorbing device 1 on the mounting substrate 40. Hereinafter, the mounting process of the noise absorbing device 1 will be described in detail. First, when the noise absorbing device 1 is pressed against the mounting board 40 side so that the arms 25, 25 narrow the connector 45, the inclined surface 26b of the hook portion 26 of the arms 25, 25 contacts the corner of the front surface 45a of the connector 45. Touch. When the noise absorbing device 1 is further pressed, the arms 25 and 25 are pushed outward while the inclined surface 26 b is in contact with the connector 45. When the noise absorbing device 1 is pressed to a position where the locking surface 26a of the hook portion 26 exceeds the rear surface 45b of the connector 45, the arms 25 and 25 are restored to the original state by the elastic force accumulated by the bending. Hold 45.

  Here, according to the noise absorber of this embodiment, in addition to the effects of the first embodiment, the following effects can also be obtained. That is, even when the flat cable 30 attached to the connector 45 is bent, the arms 25 and 25 can be made substantially parallel to the surface direction of the printed circuit board 42 when the arms 25 and 25 hold the connector. The noise absorbing device can be mounted on the mounting board in the posture. Further, since the locking surface 26a of the hook portion 26 can be brought into surface contact with the rear surface 45b of the connector 45, the fixing force of the noise absorbing device 1 to the connector 45 can be increased.

  The inclination of the arm 25 with respect to the opposing surface 12 of the insertion path 11 is not limited to 30 degrees, and a desired angle can be selected as appropriate.

[Fifth Embodiment]
Next, with reference to FIG. 17, FIG. 18 (a) and FIG. 18 (b), a fifth embodiment of the noise absorber according to the present invention will be described.

  First, the configuration of the noise absorbing device of the present embodiment will be described with reference to FIG. FIG. 17 is a perspective view showing the noise absorbing device 1 of the present embodiment.

  The absorbent member 10 is the same as that of the first embodiment, and the configuration of the case 20 is different from that of the first embodiment. The insertion passage 11 of the absorbing member 10 has a facing portion 12 that faces the flat cable.

  The case 20 includes a pair of arms 25 and 25 on both sides in the width direction of the case 20. The extending direction of each arm 25 is equal to that in the first embodiment. A hook portion 26 having a locking surface 26 a that is locked to the connector 45 is formed at the tip of each arm 25. Further, the locking surfaces 26 a and 26 a of the hook portion 26 have an inclination of 60 degrees with respect to the facing portion 12 of the insertion path 11. In other words, the locking surface 26 a is inclined with respect to the bottom surface of the case 20. Further, the surfaces of the hook portions 26 and 26 that face each other and that are closer to the tip than the locking surface 26a are inclined surfaces 26b whose intervals gradually increase toward the outside.

  The above is the configuration of the noise absorber of this embodiment. Next, a method for mounting the noise absorbing device will be described with reference to FIGS. 18 (a) and 18 (b).

  First, as shown in FIG. 18A, the flat cable 30 inserted through the insertion passage 11 of the absorbing member 10 is connected to the connector 45. In the present embodiment, the flat cable is bent as in the fourth embodiment.

  Next, as shown in FIG. 18B, the noise absorbing device 1 is slid along the flat cable 30 to attach the noise absorbing device 1 to the mounting substrate 40. Hereinafter, the mounting process of the noise absorbing device 1 will be described in detail. First, when the noise absorbing device 1 is pressed against the mounting substrate 40 so that the arms 25 and 25 hold the connector 45, the inclined surface 26 b of the hook portion 26 of the arms 25 and 25 hits the corner of the front surface 45 a of the connector 45. Touch. When the noise absorbing device 1 is further pressed, the arms 25 and 25 are pushed outward while the inclined surface 26 b is in contact with the connector 45. When the noise absorbing device 1 is pressed to a position where the locking surface 26a of the hook portion 26 exceeds the rear surface 45b of the connector 45, the arms 25 and 25 are restored to the original state by the elastic force accumulated by the bending. Hold 45. At this time, since the locking surface 26a of the hook portion 26 abuts on the rear surface 45b of the connector 45, unintentional withdrawal in the extending direction of the arm 25 of the noise absorbing device 1 is prevented.

  As described above, according to the noise absorbing device 1 of the present embodiment, after the flat cable 30 is inserted through the insertion path 11 of the absorbing member 10, the flat cable 30 is slid toward the mounting substrate 40 along the flat cable 30. It can be mounted on the mounting substrate 40. Therefore, it is not necessary to bend the flat cable 30 connected to the connector 45 when the noise absorbing device 1 is mounted, and the noise absorbing device 1 can be easily fixed to a predetermined portion even when the flat cable 30 is difficult to bend. can do. Even when the flat cable 30 is bent, since the locking surface 26a of the hook portion 26 has an inclination, the locking surface 26a of the hook portion 26 and the back surface 45b of the connector are in surface contact. Therefore, the fixing force of the noise absorbing device 1 to the connector 45 can be increased.

  In addition, the inclination of the locking surface 26a of the hook part 26 with respect to the opposing surface 12 of the insertion path 11 is not limited to 60 degrees, and a desired angle can be selected as appropriate.

[Sixth Embodiment]
Next, a sixth embodiment of the noise absorbing device according to the present invention will be described with reference to FIG. First, the configuration of the noise absorber of this embodiment will be described.

  The absorbent member 10 is not an integrally formed product but can be divided, and is composed of an upper upper piece 10a in FIG. 19 and a lower lower piece 10b in FIG. Further, the upper piece 10a and the lower piece 10b have notches formed on the surfaces facing each other, and by combining the two, the insertion passage 11 is formed by each notch.

  The case 20 is made of resin, and includes an upper upper case 20a and a lower lower case 20b in the figure. The upper case 20a holds the upper piece 10a of the absorbing member 10, and the lower case 20b holds the lower piece 10b. Further, raised locking portions 20d and 20d are formed on both sides in the width direction of the lower case 20b. The locking portions 20d and 20d are formed by providing depressions around the locking portions 20d and 20d. On the other hand, on both sides in the width direction of the upper case 20a, substantially annular hook portions 20c, 20c that are locked to the locking portions 20d, 20d are provided. The hook portions 20c and 20c have flexibility and are fitted into recesses around the locking portions 20d and 20d. Further, the lower case 20b is provided with a housing portion 29 and a stopper 50 (see FIG. 8) as in the second embodiment.

  The above is the configuration of the noise absorber of this embodiment. Next, a method for mounting the noise absorbing device will be described.

  First, a flat cable is disposed in a notch (a part of the insertion path 11) of the lower piece 10b held by the lower case 20b, and an upper case 20a into which the upper piece 10a is fitted is put on the flat cable, and the hook portion 20c is locked to the locking portion 20d. As a result, the flat cable is inserted into the insertion path 11.

  Next, the noise absorbing device 1 is slid along the flat cable to the mounting board side, the printed circuit board plate is received by the receiving portion 29 as in the second embodiment, and the plate is locked by the stopper 50.

  As described above, according to the noise absorbing device 1 of the present embodiment, it can be mounted on the mounting board by sliding along the flat cable sandwiched between the upper and lower cases. For this reason, it is not necessary to bend the flat cable when the noise absorbing device 1 is mounted, and the noise absorbing device 1 can be easily fixed to a predetermined portion even when the flat cable is difficult to bend.

[Seventh Embodiment]
Next, a seventh embodiment of the noise absorber according to the present invention will be described with reference to FIG. First, the configuration of the noise absorber of this embodiment will be described.

  The absorbing member 10 can be divided as in the sixth embodiment, and includes an upper upper piece 10a and a lower lower piece 10b in FIG. Further, the upper piece 10a and the lower piece 10b have notches formed on the surfaces facing each other, and by combining the two, the insertion passage 11 is formed by each notch.

  The case 20 is made of resin as in the sixth embodiment, and includes an upper upper case 20a and a lower lower case 20b in the drawing. The upper case 20a holds the upper piece 10a of the absorbing member 10, and the lower case 20b holds the lower piece 10b. The upper case 20a and the lower case 20b are connected to each other by a hinge portion so as to be freely opened and closed. The hinge portion is formed integrally with the upper case 20a and the lower case 20b and has flexibility. A raised locking portion 20d is formed on the side surface of the lower case 20b facing the hinge portion as in the sixth embodiment. On the other hand, a substantially annular hook portion 20c that is locked to the locking portion 20d is provided on the side surface of the upper case 20a that faces the hinge portion. Furthermore, the lower case 20b includes claw portions 28, 28 as in the first embodiment.

  The above is the configuration of the noise absorber of this embodiment. Next, a method for mounting the noise absorbing device will be described.

  First, a flat cable is disposed in a notch (a part of the insertion path 11) of the lower piece 10b held by the lower case 20b, and an upper case 20a into which the upper piece 10a is fitted is put on the flat cable, and the hook portion 20c is locked to the locking portion 20d. As a result, the flat cable is inserted into the insertion path 11.

  Next, the noise absorbing device 1 is slid to the mounting board side along the flat cable, and the printed board is sandwiched between the arms 25 and 25 and the claw portions 28 and 28 as in the first embodiment. The connector of the mounting board is locked by the hook portions 26 and 26.

  As described above, according to the noise absorbing device 1 of the present embodiment, it can be mounted on the mounting board by sliding along the flat cable sandwiched between the upper and lower cases. For this reason, it is not necessary to bend the flat cable when the noise absorbing device 1 is mounted, and the noise absorbing device 1 can be easily fixed to a predetermined portion even when the flat cable is difficult to bend.

  As mentioned above, although the invention made | formed by this inventor was concretely demonstrated based on embodiment, this invention is not limited to the said embodiment.

1 is a perspective view showing a first embodiment of a noise absorbing device according to the present invention. It is a top view of the case shown in FIG. It is a perspective view of the case shown in FIG. It is a perspective view which shows the state before mounting | wearing the mounting board | substrate with the noise absorption apparatus shown in FIG. It is a perspective view which shows the state after mounting | wearing the mounting board | substrate with the noise absorption apparatus shown in FIG. It is a side view which shows the state after mounting | wearing the mounting board with the noise absorption apparatus shown in FIG. It is a perspective view which shows 2nd Embodiment of the noise absorber which concerns on this invention. It is the perspective view which looked at the noise absorber shown in FIG. 7 from the bottom face side. FIG. 9 is a cross-sectional view of the noise absorbing device shown in FIG. It is a perspective view which shows the state before mounting | wearing the mounting board | substrate with the noise absorption apparatus shown in FIG. It is the perspective view which looked at the state after mounting the noise-absorbing device shown in FIG. It is a perspective view which shows 3rd Embodiment of the noise absorber which concerns on this invention, and shows the state before mounting | wearing with a mounting board. It is a side view of the noise absorber shown in FIG. It is a perspective view which shows the state after mounting | wearing the mounting board | substrate of the noise absorption apparatus shown in FIG. It is a perspective view which shows 4th Embodiment of the noise absorber which concerns on this invention. FIG. 16A is a side view showing a state before the noise absorbing device is mounted on the mounting substrate, and FIG. 16B is a diagram showing a state after the noise absorbing device is mounted on the mounting substrate. . It is a perspective view which shows 5th Embodiment of the noise absorber which concerns on this invention. 18A is a side view showing a state before the noise absorbing device is mounted on the mounting board, and FIG. 18B is a side view showing a state after the noise absorbing device is mounted on the mounting board. is there. It is a perspective view which shows 6th Embodiment of the noise absorber which concerns on this invention. It is a perspective view which shows 7th Embodiment of the noise absorber which concerns on this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Noise absorption apparatus, 10 ... Absorbing member, 11 ... Insertion passage, 12 ... Face part, 20 ... Case, 21 ... Bottom plate, 22 ... Holding arm, 25 ... Arm, 26 ... Hook part, 26a ... Locking surface, 26b ... Inclined surface, 28 ... Claw part, 29 ... Accommodating part, 29a ... Receiving part, 30 ... Flat cable, 40 ... Mounting board, 42 ... Printed circuit board, 45 ... Connector, 46 ... Plate, 47 ... Hole, 48 ... Hole 50 ... Stopper, 50a ... Projection, 51 ... Support, 51a ... Support plate, 51b ... Opposing wall, 52 ... Projection.

Claims (8)

An absorption member that has an insertion path through which the flat cable is inserted, is formed of a magnetic material, and absorbs noise that propagates in the flat cable;
A mounting board having a printed circuit board and a connector that is arranged on the printed circuit board and connected to the flat cable, and includes a case that holds the absorbing member,
The case has a pair of arms for holding the connector, and can be attached to the connector on the mounting board,
A noise absorbing device characterized by being slidable along the flat cable inserted through the insertion passage. The insertion path of the absorbing member has a facing portion facing the flat cable,
The noise absorbing device according to claim 1 , wherein the arm of the case has an inclination with respect to the facing portion of the insertion path. The insertion path of the absorbing member has a facing portion facing the flat cable,
The arm of the case includes a hook portion having a locking surface to be locked to the connector at the tip,
The locking surface of the hook portion, a noise absorbing device according to claim 1, characterized in that it has an inclination relative to the facing portion of the insertion path. Wherein the case, the mounting together with the substrate to extend in a side to be mounted, according to claim 1, characterized in that it comprises a pawl portion which sandwich the end portion of the printed circuit board between the arms when worn on the mounting substrate ~ The noise absorber according to claim 3 .   The noise absorbing device according to claim 1, wherein the case is attachable to the printed circuit board in the mounting substrate. The noise absorbing device according to claim 5 , wherein the printed circuit board has a protruding plate, and the case is attached to the plate of the printed circuit board. The case includes a housing portion in which the plate having a hole portion is inserted, according to claim 6, characterized in that it comprises a projection which is inserted into the hole of the plate inserted into the housing part Noise absorber. The case includes a pair of support plates capable of holding the printed circuit board,
The noise absorbing device according to claim 5 , wherein at least one of the support plates has a protrusion inserted into a hole formed in the printed circuit board.

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