JP2009135339A - Cable fixing structure, and electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cable fixing structure and an electronic apparatus, wherein the fixing force of a cable can be increased and a housing of the electronic apparatus can be miniaturized. <P>SOLUTION: The cable fixing structure is provided with a plurality of projection parts arrayed zigzag in two lines to fix the cable extended in a first direction and a bending part or an opening part for bending the cable to a second direction different from the first direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cable fixing structure and an electronic device, and more particularly to a structure and an electronic device for fixing a cable to a housing of an electronic device when the cable is pulled out from the electronic device.

  With the advent and development of various electronic devices, the required specifications for the technology of pulling out a cable from a housing are increasing. Specifically, the cost reduction, the downsizing of the housing, and the response to the increase in tensile force applied during mounting.

  As this type of conventional cable fixing method, for example, there is a structure in which the cable is fixed by a clamper. According to this structure, it is possible to fix even in a narrow space. However, it is necessary to make a mold as a separate part, which is problematic in terms of cost.

  As another conventional fixing structure, there is a structure in which a cable is wound around and fixed to a boss. This structure is used in game machine controllers and the like. However, since the boss is provided in the housing, a considerable space is required if the space for winding the cable is combined, and the housing size increases. Specifically, Patent Document 1 discloses an example of a structure in which a cylindrical rib for winding a cord is provided.

  As another fixing structure, there is a method of fixing by attaching one rib. This method is used for a mouse for a personal computer and the like, and a rib space is small. However, there is only one rib and the concentrated load is supported at one place, so that sufficient strength cannot be obtained.

On the other hand, as a fixing structure for improving cost, space, and strength, a structure in which a cable is meandered and fixed through a plurality of ribs or bosses, or a protrusion is alternately provided in the upper and lower or left and right directions in a groove where the cable is disposed. A fixing structure that is provided and clamps the cable with this protrusion has been widely used. Specifically, Patent Document 2 discloses an example of a fixing structure in which lead wires are meandered and fixed between ribs or bosses provided alternately at a constant interval. Similarly, Patent Document 3 discloses an example in which a power cord is attached so as to meander between protrusions. Patent Document 4 discloses an example of a structure in which protrusions are alternately provided on both sides of a groove to clamp a cable. Furthermore, Patent Document 5 discloses an example of a structure in which protruding pieces are alternately projected and held on the side wall of the groove.
Japanese Utility Model Publication No. 1-127288 Japanese Utility Model Publication No. 55-101091 Japanese Utility Model Publication No. 61-4468 Japanese Utility Model Publication No. 62-5589 Japanese Patent No. 3665361

  However, the conventional fixing structure for fixing the cable by meandering between the protrusions has a strong tensile force because the extension direction of the cable is parallel to the extension direction in which the cable is meandered and fixed. When added, there is a problem that the fixing force cannot be held by the rib or the boss, and the cable may come off from the rib.

  Furthermore, since the extension direction of the cable is parallel to the extension direction in which the cable is meandered and fixed, the arrangement of the fixing structure in the casing is restricted, and it is difficult to reduce the size of the casing. There was a case.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a cable fixing structure and an electronic apparatus that can increase the fixing force of the cable and reduce the size of the housing.

  In order to solve the above-described problems, the present invention is characterized by the following measures.

The present invention
A plurality of protrusions arranged in two rows in a staggered pattern for extending and fixing the cable in the first direction;
It has a bending part for bending the cable in a second direction different from the first direction.

  In the above invention, the distance between the two rows of the plurality of protrusions arranged in a staggered pattern may be set to be less than the diameter of the cable.

The present invention also provides:
A housing, an electronic component, and a cable;
The cable is
A plurality of projections arranged in two rows in a staggered manner for extending and fixing the cable in the first direction;
And a bent portion for bending the cable in a second direction different from the first direction.

  In the above invention, the distance between the two rows of the plurality of protrusions arranged in a staggered pattern may be set to be less than the diameter of the cable.

The present invention also provides:
In an electronic device having a housing, an electronic component, and a cable,
The housing is
A plurality of projections arranged in two rows in a staggered manner for extending and fixing the cable in the first direction;
An opening for bending the cable in a second direction different from the first direction;
The opening is provided at a position where the cable bent in the second direction passes through the housing.

  In the above invention, the distance between the two rows of the plurality of protrusions arranged in a staggered pattern may be set to be less than the diameter of the cable.

The present invention also provides:
The electronic component may be an antenna module.

  In addition, the said reference code is a reference to the last, and this invention is not limited to the aspect of illustration by this.

  According to the present invention, the cable is extended and fixed in the first direction, and the cable is bent in the second direction different from the first direction, so that sufficient fixing strength against tension can be secured. .

Next, the best mode for carrying out the present invention will be described with reference to the drawings.
(First embodiment)
The cable fixing structure 20 according to the first embodiment will be described with reference to FIGS.

  As shown in FIGS. 1 and 2, the cable fixing structure 20 includes a plurality of projecting portions 22 and 23 and a bent portion 28. Moreover, the cable 26 is fixed using this fixed structure. The direction in which the cable 26 is fixed by the protrusions 22 and 23 and extends is defined as a first direction, and the direction in which the cable 26 is bent and extended by the bending portion 28 is defined as a second direction. Further, the forward direction and the reverse direction of the first direction are defined as X1 and X2, and the forward direction and the reverse direction of the second direction are defined as Y1 and Y2. In this embodiment, the second direction is orthogonal to the first direction.

  As shown in FIGS. 1 and 2, the protrusions 22 and 23 include a plurality of protrusions 22-1, 22-2, 23-1, and 23-2 aligned in two rows in a staggered manner. Specifically, the projection portion is composed of two rows of projection portion rows formed in parallel in the first direction at a predetermined interval. In this embodiment, four projecting portions are provided, and the projecting portions 22-1 and 22-2 form one row, and the projecting portions 23-1 and 23-2 form the other row. Further, the two rows composed of the protrusions 22 and 23 are arranged with a distance W of a predetermined interval. The two rows are arranged to be staggered because the protrusions are not aligned in the second direction. Two or more protrusions are required.

  In addition, although it is the distance W of a predetermined space | interval, it defines not the distance between centers of 2 rows but the distance between the surfaces facing the other row of one row. The predetermined distance W is set to be less than the diameter D of the cable 26. As a result, the cable 26 can meander between the protrusions 22 and 23.

  The bent portion 28 is arranged so that the cable 26 that meanders between the protruding portions 22 and 23 is bent from the first direction X1 to the second direction Y1.

  The cable 26 is a fixed object in the fixed structure. The cable 26 meanders between the protrusions 22 and 23 and extends along the first direction X1. After the cable 26 passes through all of the protrusions 22 and 23, the cable 26 is bent at the bent portion 28. Extends in a second direction Y1 orthogonal to the direction X1.

  As shown in FIG. 3, the cable 26 has a structure in which a plurality of wire cores 38 are housed in a sheath 32 such as PVC together with a shield 34 and a drain wire 36, and has a diameter of about 3 to 5 mmφ. . Specifically, a total of five A wire cores and two B wire cores are housed in a flame retardant PVC sheath, and the outer diameter is 4.00 mmφ. The A wire core has 19 / 0.08TA as a conductor, polyester as an insulator, and an insulation diameter of 0.70 mmφ. The B core has 19 / 0.08TA as a conductor, cross-linked PE as an insulator, and an insulation diameter of 0.75 mmφ. An arbitrary cable can be used within a similar range.

  Next, the operation will be described.

  The protrusions 22 and 23 are members for making it difficult for the cable 26 to be pulled out with respect to the tensile force along the first direction X1. Since the protrusions 22 and 23 are arranged in a staggered manner, the cable 26 meanders between the protrusions 22 and 23 and extends.

  The bent portion 28 is a member for bending the cable 26 extending along the first direction X1 in the second direction Y1. The bent portion 28 is disposed on the extended line in the first direction X1 so as to block the cable 26 from extending in the first direction X1. Therefore, the cable 26 is bent at the bent portion 28 and extended by changing the extending direction of the first direction X1 to the second direction Y1.

  Next, the fixed function will be described.

  A case where a tensile force along the second direction Y1 is applied to the cable 26 will be described.

  Since the cable 26 is in contact with the protrusions 22 and 23 and a frictional force is generated before the tensile force is applied, the cable 26 is fixed against the tensile force even when the tensile force is applied. The FIG. 4 shows an enlarged view of a location where the cable 26 abuts the protrusions 22 and 23. Each protrusion constituting the plurality of protrusions 22 and 23 is in contact with the cable 26 at two contact portions 44.

  In addition, in the protrusion 22-1 which is the protrusion closest to the bent portion 28, the component of the force applied to the protrusion 22-1 in the second direction Y1 is the second force applied by meandering. 2 in comparison with the component in the direction Y1. As a result, the frictional force generated when the cable 26 comes into contact with the protruding portion 22-1 is larger than when the tensile force is applied in the first direction X1 without bending in the second direction Y1. . Therefore, the cable 26 is fixed with respect to a larger tensile force by being bent in the second direction Y1.

  Thus, by providing the bent portion 28 and bending the cable 26 from the first direction X1 to the second direction Y1, the frictional force received from the protrusions 22 and 23 can be increased. It becomes difficult to come off against the tensile force.

  Moreover, since it becomes difficult to remove | exclude with respect to a tensile force, the full length of a fixing structure can be shortened by reducing the number of the projection parts 22 and 23. FIG.

In the present embodiment, the angle formed by the second direction and the first direction is 90 degrees, but an angle other than 90 degrees can also be taken. Thereby, the arrangement structure of the cable can be designed more freely.
(First modification of the first embodiment)
Next, a first modification of the first embodiment will be described with reference to FIG.

  The cable fixing structure according to this modification is a triangular structure instead of the cable fixing structure 20 in which the cross-sectional shape of the projections 22 and 23 in the plane meandering by the cable 26 is rectangular as shown in FIG. Only there is a difference from the first embodiment.

  FIG. 5 is an enlarged view of a portion where the cable 26 contacts the protrusions 22 and 23. Since the cross-sectional shape of the protrusions 22 and 23 is a triangle, the protrusions 22 and 23 abut on the cable 26 with one apex of the triangle as an abutment 44. Since a higher pressure is applied at the abutting position than in the case of the rectangular shape, the protrusions 22 and 23 are in a state of biting into the cable 26, and the tensile force is greater than that in the case of the first embodiment. It becomes difficult to come out against. In particular, when the sheath material of the cable 26 is soft and easily deformed, the effect of the present modification is increased.

  Further, in this modification, even if the shape of only the protrusion 22-1 closest to the bent portion 28 in the row in the second direction of the two rows is the triangle, the effect is obtained. can get.

As described above, the fixing structure according to this modification can increase the fixing force by changing the shape of the protrusion to a triangle.
(Second modification of the first embodiment)
Next, a second modification of the first embodiment will be described with reference to FIG.

  The cable fixing structure according to this modification is the same as the cable fixing structure according to the first embodiment, but the cross-sectional shape of the projections 22 and 23 on the plane where the cable 26 meanders is rectangular as shown in FIG. Instead of this, the only difference from the first embodiment is that the shape is a curved curve.

  FIG. 6 is an enlarged view of a portion where the cable 26 contacts the protrusions 22 and 23. Since the cross-sectional shape of the projections 22 and 23 is a curved shape, the projections 22 and 23 abut the cable 26 with the entire surface as the abutment 44. As a result, although the pressure at which the protrusions 22 and 23 press the cable 26 is reduced, the contact area is increased, the frictional force is increased, the fixing force is increased as compared with the case of the first embodiment, and the tensile force is increased. It becomes hard to come off against force. In particular, when the sheath material of the cable 26 is hard and is not easily deformed, the effect of the present modification is increased.

As described above, in the fixing structure according to this modification, the fixing force can be increased by changing the shape of the protrusion to a curved shape.
(Second embodiment)
Next, an electronic apparatus according to a second embodiment of the present invention will be described with reference to FIGS. In this embodiment, an example in which a GPS (Global Positioning System) is used as an electronic device will be described. Of the configurations shown in FIGS. 7 to 11 used in the following description, the configurations corresponding to the configurations shown in FIGS. 1 and 2 used in the first embodiment are the same as the configurations described above. Reference numerals are assigned and explanations thereof are omitted.

  7 to 9 are a perspective view, a plan view, and a cross-sectional view illustrating the GPS 100 according to the second embodiment of the present invention. As shown in FIGS. 7 and 8, the GPS 100 includes a housing 102, an electronic component 104, and a cable 126.

  The housing 102 includes a top cover 112, a cushion sheet 114, a bottom cover 116, and a cable fixing structure 120. The electronic component 104 includes a module 106, a bonding substrate 108, and a shield case 110. A structure of the GPS 100 including the housing 102 and the electronic component 104 will be described.

  As shown in FIGS. 7 and 9, the cushion sheet 114, the shield case 110, and the bonding substrate 108 are disposed on the bottom cover 116 sequentially from the bottom to the top, and the module 106 is disposed thereon. It has a structure. The laminated structure from the bottom cover 116 to the module 106 is covered with the top cover 112.

  The cable 126 is connected to the bonding substrate 108 of the module 104 using soldering or a connector 118 and is pulled out of the housing 102. During the drawing, the cable 126 is fixed inside the housing 102 by using the cable fixing structure 120.

  10 and 11 are enlarged views of the periphery of the cable fixing structure 120 disposed on the top cover 112. FIG. The cable fixing structure 120 is disposed inside the top cover 112 of the housing 102. The cable fixing structure 120 includes a plurality of projecting portions 22 and 23, a bent portion 28, and an opening 130. The definition of the first direction and the second direction, the definition and structure of the protrusion, and the structure of the bent part are the same as those of the cable fixing structure 20. The second direction is orthogonal to the first direction.

  The opening 130 is provided in the top cover 112 at a position where the cable 126 bent from the first direction X1 to the second direction Y1 passes through the top cover 112.

  The cable 126 meanders between the protrusions 22 and 23, extends along the first direction X1, passes through the protrusions 22 and 23, and then bends in the second direction Y1 to open the opening. Extend through 130.

  Next, the operation will be described.

  The top cover 112 and the bottom cover 116 have a function of protecting the electronic component 104.

  The module 106 has a function that characterizes the electrical effect of the GPS 100. In this embodiment, an antenna module for GPS is used. In addition to the antenna module, a module having an arbitrary function can be used.

  The bonding substrate 108 is a member for bonding the module 106 and the shield case 110, and is for mechanical integration and electrical connection.

  The shield case 110 is for removing the influence of the electromagnetic field on the electronic circuit and connector disposed therein. Signals transmitted by cables are easily affected by external magnetism, floating radio waves, and the like. Therefore, it is isolated by the shield case 110.

  The cushion sheet 114 has a function of absorbing vibrations and shocks from the bottom cover 116 and not transmitting them to the shield case 110.

  The cable 126 is arranged to make an electrical connection from the inside of the housing 102 to the outside. That is, the electronic component 104 disposed inside the housing 102 is integrally or externally disposed via the connector 118.

  The protruding portions 22 and 23 and the bent portion 28 operate in the same manner as the cable fixing structure 20.

  The opening 130 is a through hole provided in the top cover 112 and has a function of drawing the cable 126 from the inside of the housing 102 to the outside.

  In addition, by making the width of the hole of the opening 130 substantially equal to the diameter of the cable 126, it is possible to provide a function of guiding the extension of the cable 126 in the second direction Y1. It is.

  Since the opening 130 has a function as a bent portion, the bent portion 28 may be omitted.

  Next, the fixed function will be described.

  A case where a tensile force along the second direction Y1 is applied to the cable 126 will be described.

  Since the cable 126 is in contact with the protrusions 22 and 23 and the frictional force is generated before the tensile force is applied, the cable 126 is fixed against the tensile force even when the tensile force is applied. The

  In addition, since the cable 126 bends from the first direction X1 to the second direction Y1 at the edge 132 of the opening 130, a frictional force is generated by contacting the edge 132. As a result, the total frictional force received by the cable 126 is greater than when a tensile force is applied in the first direction X1 without bending in the second direction Y1. Therefore, the cable 126 is fixed against a greater tensile force by being bent in the second direction Y1.

  Thus, by providing the bent portion 28 and the opening portion 130 and bending the cable 126 from the first direction X1 to the second direction Y1, not only the frictional force received from the protrusions 22 and 23 but also the edge 132 is provided. The frictional force received from the load can be applied, and it is difficult to pull out with respect to a larger tensile force.

  Moreover, since it becomes difficult to remove | exclude with respect to a tensile force, the full length of a fixing structure can be shortened by reducing the number of the projection parts 22 and 23. FIG.

  Furthermore, since the extending direction and the extending direction of the cable 126 can be arranged at right angles, the fixing structure of the cable 126 in the top cover 112 can be simplified, and the size of the GPS 100 can be further reduced. it can.

  Further, in this embodiment, the cable 126 passes through the protrusions 22 and 23 in the first direction X1, and then bends at the bent portion 28 and extends in the second direction Y1 through the opening 130. Although it goes out, the bending part 28 may be provided also in the reverse direction X2 side of X1, and you may make it bend in the direction different from X2. By performing bending at both ends, the fixing force can be further increased.

Furthermore, in this embodiment, the angle formed by the second direction and the first direction is 90 degrees, but an angle other than 90 degrees may be taken. Thereby, the cable fixing structure can be reduced in size according to the shape of an arbitrary housing.
(Modification of the second embodiment)
Next, a modified example of the second embodiment will be described with reference to FIG.

  In the second embodiment, the electronic device according to this modification example has a tapered edge 132 as shown in FIG. 12 in the cross-sectional shape of the plane where the cable 126 of the opening 130 meanders. This is different from the embodiment.

  FIG. 12 is a diagram illustrating a case where a tapered edge 132 is formed in the opening 130 in FIG. 11. A tapered edge 132 is formed in the opening 130, and the cable 126 contacts the edge 132 when bent from the first direction X1 to the second direction Y1. As a result, the edge 132 bites into the cable 126. As a result, the frictional force generated at the edge 132 is further increased, and it is difficult for the tensile force to come off as compared with the case of the second embodiment. In particular, when the sheath material of the cable 126 is soft and easily deformed, the effect of this deformation is increased.

  Therefore, in the fixing structure according to this modification, the fixing force can be increased by providing the opening 130 with the tapered edge 132.

  As described above, in the embodiment of the electronic device described above, the top cover 112 using a resin is applied and the bonding substrate 108 and the shield case 110 are included in the configuration, but the present invention is limited to this. It can be applied as a cable fixing structure to various devices and apparatuses.

It is a perspective view of the fixing structure of the cable which is 1st Example of this invention. It is a top view of the fixing structure of the cable which is 1st Example of this invention. It is a figure for demonstrating the fixing structure of the cable which is 1st Example of this invention, and is sectional drawing of a cable. It is a figure for demonstrating the fixing structure of the cable which is 1st Example of this invention, and is an enlarged view of the location where a cable contact | abuts to a projection part. It is a figure for demonstrating the fixing structure of the cable which is the 1st modification of 1st Example of this invention, and is an enlarged view of the location where a cable contact | abuts to a projection part. It is a figure for demonstrating the fixing structure of the cable which is the 2nd modification of 1st Example of this invention, and is an enlarged view of the location where a cable contact | abuts to a projection part. It is a perspective view of the electronic device which is 2nd Example of this invention. It is a top view of the electronic device which is 2nd Example of this invention. It is sectional drawing between AA 'in FIG. It is a figure for demonstrating the electronic device which is 2nd Example of this invention, and is a perspective view of the fixing structure of a cable. It is a figure for demonstrating the electronic device which is 2nd Example of this invention, and is a top view of the fixing structure of a cable. It is a figure for demonstrating the electronic device which is a modification of 2nd Example of this invention, and is an enlarged view of the location where a cable contact | abuts to the edge of an opening part.

Explanation of symbols

20 Cable fixing structure 22 Projection portion 23 Projection portion 26 Cable 28 Bending portion 44 Contact portion 100 GPS
102 Housing 104 Electronic component 106 Module 108 Bonded substrate 110 Shield case 112 Top cover 114 Cushion sheet 116 Bottom cover 118 Connector 120 Cable fixing structure 126 Cable 130 Opening 132 Edge

Claims (6)

A plurality of protrusions arranged in two rows in a staggered pattern for extending and fixing the cable in the first direction;
A cable fixing structure comprising a bent portion for bending the cable in a second direction different from the first direction.   The cable fixing structure according to claim 1, wherein a distance between two rows of the plurality of protrusions arranged in a staggered pattern is set to be less than a diameter of the cable.   An electronic apparatus comprising: a housing, an electronic component, and a cable, wherein the cable is fixed with the cable fixing structure according to claim 1. In an electronic device having a housing, an electronic component, and a cable,
The housing is
A plurality of projections arranged in two rows in a staggered manner for extending and fixing the cable in the first direction;
An opening for bending the cable in a second direction different from the first direction;
The opening is provided in a position where the cable bent in the second direction passes through the housing.   The electronic apparatus according to claim 4, wherein a distance between two rows of the plurality of protrusions arranged in a staggered pattern is set to be less than a diameter of the cable.   6. The electronic apparatus according to claim 3, wherein the electronic component is an antenna module.