JP2019192711A - Wiring member fixing structure of electronic apparatus housing, wiring member fixing method and electronic apparatus or video acoustic equipment using the same - Google Patents

Abstract

To provide a wiring member fixing structure capable of facility an operation for fixing a wiring member such as an electric wire, a cable, and a code having an insulation coating in an electronic apparatus housing to a prescribed position along a housing structured by a sheet metal.SOLUTION: A wiring member fixing structure 1 of an electronic apparatus housing, comprises: a wiring member 8; and a metal plate member (rear panel 3) forming a wiring member fixing part 10 that is a metal plate member structuring a housing and fixes the wiring member to the housing. The wiring member fixing part is provided in a corner part formed by folding two flat surface parts of which a prescribed shaped metal plate member is substantially orthogonal is defined, projections 11 and 12 projected so as to be separated from the two flat surface part with a distance of a diameter or less of the wiring member in an inner side of each housing are formed, and the wiring member is housed in a housing space defined by the two projections and the corner part to fix it.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a wiring member fixing structure and a wiring member fixing method for fixing a wiring member such as a cord in a predetermined position inside a housing of an electronic device or an audiovisual device, and more particularly to a housing made of sheet metal. The present invention relates to a wiring member fixing structure for fixing a wiring member such as an electric wire, a cable, or a cord having an insulation coating at a predetermined position along the line.

  An audiovisual apparatus such as an amplifier that amplifies an audio signal may include a plurality of wiring members that connect between boards and a large-sized component such as a heat sink that increases in temperature inside the casing. A flexible and bendable wiring member such as a cord is connected to a component such as a board while the position of the intermediate portion is not fixed. The position is mechanically fixed so as to be separated from a high temperature part such as a heat sink. However, in these audiovisual equipment, the internal structure including the wiring becomes complicated while downsizing, and there may be a case where a sufficient space is not provided between the wiring member and other parts. In addition, when the audiovisual apparatus includes a high-frequency communication interface such as HDMI (registered trademark), there is a risk of being affected by unnecessary radiation from the circuit board or the like.

  In the wiring member fixing structure of the electronic device casing, it is desirable that the number of man-hours required for fixing the wiring member and the cost required for manufacturing are smaller by using the wiring member fixing structure that is easy to mount. Therefore, conventionally, the wiring member may be fixed in a bundled state along the inner wall surface of the casing. In this case, two through holes are formed at predetermined intervals on the wall surface of a casing made of a metal plate, and the two wires are bound and fixed in a state of surrounding a plurality of electric wires through a binding band.

  In addition, conventionally, a mounting box for an electric device or the like provided with an entry hole in a side wall of a rectangular box-like box and attached to a construction material or a panel surface, etc., and a hook for holding an electric wire on the side plate or a base plate in the vicinity thereof. There is a mounting box for an electric device or the like characterized in that stop ribs are arranged at a plurality of locations (Patent Document 1). In addition, it is preferable that the said latching rib is shape | molded integrally with the box.

  Further, conventionally, there is a wiring bundling and fixing structure in which a plurality of wires are bound and fixed to the inner surface of the wall portion of the casing with a binding band, and the first is formed at a predetermined interval on the wall portion of the casing. An insertion portion, a second insertion portion, and a binding band that is fixed to the wall portion in a state where a plurality of wires routed inside the wall portion of the housing are bundled, and the binding band is in a band shape A band part that extends, and a lock part that is connected to one end of the band part, and the lock part that restricts movement of the band part in the anti-insertion direction when the other end of the band part is inserted. The first insertion part is formed as a bent part or a bulging part protruding from the inner surface of the wall part, and is an opening through which the other end of the band part can be inserted into the housing from the outside of the wall part. And the other end of the band portion inserted through the opening portion toward the second insertion portion side A guide surface that guides the wire to extend, and the second insertion portion is formed to include an opening through which the lock portion of the binding band can be inserted into the housing from the outside of the wall portion. There is a fixed structure (Patent Document 2).

Japanese Utility Model Publication No. 4-124 JP 2016-25340 A

  However, in the conventional wiring fixing structure as described in Patent Document 1 or 2, the wire holding latch ribs are arranged at a plurality of positions on the sheet metal parts constituting the housing, or the binding band is inserted through the first one. A first insertion part and a second insertion part are provided. As a result, there is a problem in that a hole is formed in the sheet metal part so as to communicate the inside and outside of the housing. It is common for a housing such as an electronic device or an audiovisual device to be provided with a hole at a predetermined position for reasons of heat dissipation, but the wiring member fixing structure and the heat dissipation structure may be provided at different positions. In many cases, it is not preferable that the internal wiring member can be visually seen through the hole. Also, from the viewpoint of dust prevention and aesthetics, it may not be preferable to provide a hole as a fixing structure for the wiring member.

  The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide a wiring member fixing structure and a wiring member fixing method for an electronic device casing, and an electronic device or an audiovisual device using the same. A wiring member fixing structure that makes it easy to fix a wiring member such as an electric wire, cable, cord, etc. having insulation coating at a predetermined position along a casing made of sheet metal in an electronic device casing There is to do.

  A wiring member fixing structure of an electronic device casing according to the present invention includes a wiring member and a sheet metal member that forms a wiring member fixing portion that is a member of a sheet metal constituting the casing and fixes the wiring member to the casing. The wiring member fixing portion is provided at a corner portion formed by bending a sheet metal member of a predetermined shape so as to define two plane portions that are substantially orthogonal to each other, and the wiring member is provided inside the casing from the two plane portions, respectively. A protrusion protruding so as to be separated by a distance equal to or less than the diameter is formed, and the wiring member is accommodated and fixed in the accommodating space defined by the two protrusions and the corners.

  Preferably, in the wiring member fixing structure of the electronic device casing of the present invention, the protrusion is formed in a spherical shape so as not to provide a hole in the sheet metal member that allows communication between the inside and the outside of the casing.

  Preferably, in the wiring member fixing structure of the electronic device casing of the present invention, the radius dimension defining the spherical protrusion is equal to or greater than the thickness dimension of the sheet metal member.

  Moreover, the electronic device or audiovisual device of the present invention includes the wiring member fixing structure of the electronic device casing.

  The wiring member fixing method for an electronic device casing according to the present invention is a wiring fixing method for fixing a wiring member to a predetermined position of the casing of the electronic device casing, and is a sheet metal member that is a sheet metal member constituting the casing. The step of forming the wiring member fixing portion for fixing the wiring member to the housing on the member includes forming a corner portion by bending a sheet metal member having a predetermined shape so as to define two plane portions substantially orthogonal to each other, A step of forming protrusions that project away from the plane portion at a distance equal to or less than the diameter of the wiring member inside the housing, and the wiring member is accommodated in an accommodation space defined by the two protrusions and the corners And a fixing step.

  Preferably, in the wiring member fixing method for an electronic device casing according to the present invention, the protrusion is formed by embossing so that the step of forming the protrusion does not provide a hole that allows the inner side and the outer side of the casing to communicate with each other. Forming a spherical surface.

  Preferably, in the wiring member fixing method for an electronic device casing of the present invention, the radial dimension defining the spherical protrusion is equal to or greater than the thickness dimension of the sheet metal member.

  The operation of the present invention will be described below.

  The wiring member fixing structure of the electronic device casing according to the present invention includes a wiring member such as an electric wire, a cable, and a cord having insulation coating, and a sheet metal member constituting the casing, and the wiring that fixes the wiring member to the casing. A sheet metal member that forms a member fixing portion. The wiring member fixing portion of the sheet metal member is provided at a corner portion formed by bending a sheet metal member having a predetermined shape so as to define two plane portions that are substantially orthogonal to each other. Furthermore, the wiring member fixing portion is formed with a protrusion that protrudes away from the two flat portions at a distance equal to or smaller than the diameter of the wiring member inside the housing.

  Therefore, the wiring member fixing portion of the sheet metal member accommodates and fixes the wiring member in the accommodating space defined by the two protrusions and the corners. If the wiring member is operated so as to pass between the two spaced projections, the operation of fixing the wiring member at a predetermined position along the casing made of sheet metal becomes easy. In the wiring member fixing structure of the electronic device casing or the wiring member fixing method of the electronic device casing, the wiring member such as an electric wire / cable / cord having an insulation coating is provided along a casing made of sheet metal. Since no other fixing member is required for fixing at this position, there is an advantage that the work is facilitated, the manufacturing cost can be suppressed, and the number of work steps can be reduced.

  In this wiring member fixing structure, it is preferable that the protrusion is formed in a spherical shape so as not to provide a hole in the sheet metal member that allows communication between the inside and outside of the housing. The fact that there is no hole in the protrusions eliminates the possibility that the insulation surface of the wiring member is damaged or disconnected due to burrs on the cut surface because the cut surface of the sheet metal member is not exposed. Can do. When fixing a wiring member such as an electric wire, cable or cord having insulation coating at a predetermined position along a casing made of sheet metal, a hole which is not preferable from the viewpoint of dust prevention and aesthetics is formed in the sheet metal member of the casing. There is an advantage that it is not necessary to provide.

  Moreover, in this wiring member fixing structure, it is preferable that the radius dimension defining the spherical protrusion is equal to or greater than the thickness dimension of the sheet metal member. It can arrange | position more stably in the state shape | molded in the predetermined position.

  The wiring member fixing structure of the electronic device casing of the present invention is in line with the casing constituted by sheet metal wiring members such as electric wires, cables, and cords having an insulation coating in the casing of the electronic device or the audiovisual apparatus. It is possible to provide a wiring member fixing structure that facilitates the operation of fixing at a predetermined position.

It is a figure explaining the wiring member fixing structure 1 of the electronic device housing | casing by preferable embodiment of this invention. Example 1 It is a perspective view explaining the wiring member fixing | fixed part 10 of the electronic device housing | casing by preferable embodiment of this invention. Example 1

  Hereinafter, a wiring member fixing structure and a wiring member fixing method of an electronic device casing according to preferred embodiments of the present invention and an electronic device or an audiovisual device using the same will be described, but the present invention is not limited to these embodiments.

  FIG. 1 and FIG. 2 are diagrams for explaining a wiring member fixing structure 1 of an electronic device casing and a wiring fixing method thereof according to a preferred embodiment of the present invention. Specifically, FIG. 1 is a partially enlarged perspective view of a part of the rear side of the electronic device casing as viewed from the inside of the casing.

  2A is an enlarged front view of the wiring fixing member, and FIG. 2B is a cross-sectional view of the wiring fixing portion 10 taken along the line A-A ′ in FIG. The electronic device including the wiring member fixing structure 1 is specifically an AV receiver that is an electronic device including an amplifier that amplifies an audio signal. In order to make the figure easy to understand, its entire configuration and wiring member fixing structure The illustration of a part of the configuration unnecessary for the description of 1 is omitted.

  The wiring member fixing structure 1 of the present embodiment fixes the cable 8 as a wiring member at a predetermined position in the housing of the AV receiver. FIG. 1 illustrating the wiring member fixing structure 1 includes a metal chassis 2, a rear panel 3 that is attached to the chassis 2 to form a housing, a substrate 6 that is attached to the inside of the housing, and a substrate 6. It includes a component 7 that is mounted and mounted, a cable 8 that connects and connects the substrate 7 and the antenna holder 9, and a wiring fixing unit 10 that fixes the cable 8.

  The cable 8 includes connector portions (not shown) corresponding to the terminals of the board at both ends. For example, the cable 8 may be an antenna cable, a coaxial cable, a USB cable, a power cord, or the like. The cable 8 of the present embodiment is a relatively thin wiring member having an insulation coating, and its diameter is φ = 1.0 mm.

  The cable 8 may include a component that is sensitive to high heat, so that it is preferable not to directly touch the semiconductor element that generates heat or other components such as a heat sink that dissipates the heat. In addition, in order to prevent abnormal noise from coming into contact with the chassis 2 due to vibration, the influence of unnecessary radiation from the circuit board 6 of a high-frequency communication interface such as HDMI (registered trademark) is avoided. Even in terms of points, it is preferable to arrange them along the corners 3 c of the rear panel 3.

  That is, the wiring member fixing structure 1 is illustrated in the perspective view of FIG. 1 and FIG. 2 with the cable 8 connecting between the plurality of boards 6 or components (in the present embodiment, the antenna holder 9) in the housing. Thus, it is a structure arranged and fixed along the corner | angular part 3c of the rear panel 3. FIG. Therefore, in this wiring member fixing structure 1, two wiring fixing portions 10 are provided at the corner 3c of the rear panel 3, and the intermediate portion of the cable 8 is fixed at a predetermined position. According to this wiring fixing method, the cable 8 as a wiring member can be fixed at a predetermined position of the casing of the electronic device casing.

  The rear panel 3 of the present embodiment is formed by bending a sheet metal member which is an iron steel plate having a thickness T = 0.8 mm. A back plate portion 3a which is a flat surface portion of the rear panel 3 constitutes a back surface portion of the housing. The back plate portion 3 a is attached to the chassis 2 at the lower end side.

  On the other hand, the upper end side of the back plate portion 3a is bent forward at a substantially right angle to form a top surface portion 3b which is a flat portion substantially orthogonal to the back plate portion 3a. The corner portion 3c is formed as a corner portion connecting the back plate portion 3a and the top surface portion 3b. Therefore, the substrate 6 and the cable 8 are accommodated in the inner side 4 of the housing surrounded by the back plate portion 3a, the top surface portion 3b, and the corner portion 3 of the rear panel 3.

  That is, in the process of forming the rear panel 3 which is a sheet metal member, the sheet metal member of a predetermined shape is bent so as to define the back plate part 3a and the top surface part 3b which are substantially orthogonal, and the corner part 3c is formed, and the cable The process of forming the wiring member fixing | fixed part 10 which fixes 8 is included.

  As shown in FIG. 1, the wiring fixing portions 10 of the present embodiment are provided at two locations in the corner portion 3 c of the rear panel 3. As shown in FIG. 2, each wiring fixing portion 10 protrudes from the back plate portion 3 a to the inside 4 of the housing, and protrudes from the top surface portion 3 b to the inside 4 of the housing. And a protrusion 12 provided on the surface. The protrusions 11 and 12 are formed by a process of forming protrusions that protrude from the back plate portion 3a and the top surface portion 3b to the inside 4 of the housing so as to be separated from each other by a distance equal to or less than the diameter φ of the cable 8.

  The protrusions 11 and 12 are protrusions that are formed into a spherical shape by embossing the rear panel 3 that is a sheet metal member. Embossing is a processing method in which an embossed pattern is formed by pressing the material with a stamping tool that has an uneven pattern. The protrusion 11 and the protrusion 12 of this embodiment are protrusions formed by protruding a part of the sheet metal member from the outer side 5 to the inner side 4 of the housing and protruding from the inner side 4.

  The outer shape of the protrusion 11 is formed as a spherical surface with a radius R1 = 1.0 mm, and similarly, the outer shape of the protrusion 12 is formed as a spherical surface with a radius R2 = 1.0 mm. In the projection 11 and the projection 12, the distance dimension A = B = 2.9 mm from the corner of the outer side 5 and the center point of the radial dimension R1 or R2 that defines each spherical surface at a position on the auxiliary line AA ′ Is located. In the case of the present embodiment, the dimensions of the radii R1 and R2 are set to a value equal to or greater than the thickness T = 0.8 mm of the sheet metal member.

  The shape of the protrusion 11 and the protrusion 12 is formed in a spherical shape so as not to provide a hole for communicating the inner side 4 and the outer side 5 of the housing by embossing. That is, since the protrusion 11 and the protrusion 12 do not have a hole, the cut surface of the sheet metal member constituting the rear panel 3 is not exposed. Therefore, the protrusion 11 and the protrusion 12 are suitable for use to fix the cable 8. The two protrusions 11 and 12 and the corner 3c of the rear panel 3 define a housing space 13 in which the cable 8 is fixed.

  As shown in FIG. 2B, the wiring fixing portion 10 is provided in the corner portion 3c of the rear panel 3 so that the two protrusions 11 and the protrusion 12 are separated by a distance W = 0.97 mm. Therefore, the cable 8 having a diameter φ = 1.0 mm is passed through the two protrusions 11 and 12 so as to be pushed toward the corner 3c and fixed in the accommodation space 13. If the distance W between the two protrusions 11 and 12 is equal to or less than the diameter of the cable 8, the relatively flexible cable 8 can be deformed and passed between the two protrusions.

  As described above, the wiring member fixing portion 10 of the rear panel 3 can accommodate and fix the cable 8 in the accommodating space 13 defined by the two protrusions 11 and 12 and the corner portion 3c. Since no other fixing member is required to fix the cable 8 to the wiring member fixing portion 10, there is an advantage that the work is facilitated, the manufacturing cost can be suppressed, and the number of work steps can be reduced.

  Further, since the two protrusions 11 and 12 are formed in a spherical shape so as not to provide a hole, when the cable 8 is accommodated and fixed in the accommodation space 13, the cable 8 may be cut by a burr on the cut surface. There is no risk of damage to the insulation coating or disconnection. Further, when fixing the cable 8 along the corner 3c of the rear panel 3, there is an advantage that it is not necessary to provide a hole in the rear panel 3 which is not preferable from the viewpoint of dust prevention and aesthetics.

  The radius dimension R1 or R2 that defines the spherical projection 11 and the projection 12 may be set to a value equal to or greater than the thickness T dimension of the sheet metal member of the rear panel 3. For example, even if the thickness T dimension of the sheet metal member of the rear panel 3 is 0.7 mm, which is thinner than in the present embodiment, the center point of the radial dimension R1 or R2 that defines the spherical surfaces of the protrusion 11 and the protrusion 12 is What is necessary is just to provide in the position of distance dimension A = B = 2.8mm from the corner | angular of the outer side 5. FIG. Then, the distance W between the two protrusions 11 and the protrusions 12 can be maintained at 0.97 mm.

  Similarly, even if the thickness T dimension of the sheet metal member of the rear panel 3 is 1.0 mm thicker than in the case of the present embodiment, the center point of the radial dimension R1 or R2 that defines the spherical surfaces of the protrusion 11 and the protrusion 12 is For example, what is necessary is just to provide in the position of distance dimension A = B = 3.1mm from the corner | angular of the outer side 5. Then, the distance W between the two protrusions 11 and the protrusions 12 can be maintained at 0.97 mm.

  The shape of the two protrusions 11 and 12 is preferably a spherical shape as in this embodiment, but it is a shape that does not provide a hole that allows the housing 4 and the outer side 5 to communicate with each other by embossing. If it exists, it may be cylindrical or prismatic. Two protrusions 11 and protrusions that protrude so as to be separated from the two flat portions 3a and 3b by a distance W equal to or less than the diameter φ of the cable 8 from the two flat portions 3a and 3b without exposing the cut surface of the sheet metal member. 12 may be formed.

  The distance W between the two protrusions 11 and 12 may be the distance of the narrowest space between the two protrusions regardless of the shape of the protrusion. If the distance W is equal to or less than the diameter φ of the cable 8, the arrangement of the two protrusions 11 and 12 is not aligned with the position on the auxiliary line AA ′ as in this embodiment, and the positional relationship is shifted. It may be.

  In this wiring member fixing method, the cable 8 can be fixed at a predetermined position along the casing made of sheet metal by the wiring fixing portion 10 in the casing of the electronic apparatus or the audiovisual apparatus. Since the work for fixing to the position becomes easy and the structure is simple and the cost increase is small, there is an advantage that the number of work steps can be reduced. Of course, an auxiliary wiring fixing member such as a tape may be used in combination.

  The wiring member fixing structure and method of the present invention can be applied not only to audiovisual equipment such as an amplifier that amplifies an audio signal, but also to wiring member fixing structures of other audiovisual equipment or equipment such as an electronic computer.

DESCRIPTION OF SYMBOLS 1 Wiring member fixing structure 2 Chassis 3 Rear panel 6 Board | substrate 8 Cable 9 Antenna holder 10 Wiring fixing | fixed part 11 1st protrusion 12 2nd protrusion 13 Housing space

Claims (7)

A wiring member, and a sheet metal member that forms a casing and forms a wiring member fixing portion that fixes the wiring member to the casing.
The wiring member fixing portion is provided at a corner portion formed by bending the sheet metal member having a predetermined shape so as to define two plane portions that are substantially orthogonal to each other. A protrusion protruding so as to be separated by a distance equal to or less than the diameter of the wiring member is formed, and the wiring member is accommodated and fixed in an accommodation space defined by the two protrusions and the corner portion.
Wiring member fixing structure of electronic equipment casing. The protrusion is formed in a spherical shape so as not to provide a hole that allows the inside and outside of the housing to communicate with the sheet metal member.
The wiring member fixing structure for an electronic device casing according to claim 1. A radius dimension defining the spherical projection is equal to or greater than a thickness dimension of the sheet metal member;
The wiring member fixing structure for an electronic device casing according to claim 2.   An electronic device or an audiovisual device including the wiring member fixing structure for an electronic device casing according to any one of claims 1 to 3. A wiring fixing method for fixing a wiring member to a predetermined position of a casing of an electronic device casing,
Forming a wiring member fixing portion for fixing the wiring member to the casing on a sheet metal member which is a sheet metal member constituting the casing;
Bending the sheet metal member of a predetermined shape so as to define two plane portions substantially orthogonal to each other, forming a corner portion, and a distance not more than the diameter of the wiring member from the two plane portions to the inside of the housing, respectively Forming a protrusion protruding so as to be separated, and storing and fixing the wiring member in an accommodation space defined by the two protrusions and the corner; and
A wiring member fixing method for an electronic device casing, comprising: The step of forming the protrusion includes a step of forming the protrusion into a spherical shape by embossing so as not to provide a hole in the sheet metal member that allows communication between the inside and the outside of the housing.
The wiring member fixing method for an electronic device casing according to claim 5. A radius dimension defining the spherical projection is equal to or greater than a thickness dimension of the sheet metal member.
The wiring member fixing method of the electronic device housing according to claim 6.