JP2009217185A - Interface cable holding structure of electronic equipment and image forming device - Google Patents

Abstract

An interface cable holding structure excellent in maintainability while minimizing the total length of the interface cable and an image forming apparatus including the interface cable holding structure are provided.
A first control board provided with a control circuit for controlling the operation of an electronic device, a second control board provided with a control circuit for controlling the operation of the electronic device, and a first control board, An interface of an electronic device comprising: an interface cable that connects the second control board; and a partition plate 62 that partitions the space in which the first control board is provided and the space in which the second control board is provided. In the cable holding structure, the partition plate 62 is made of sheet metal, and a part of the partition plate 62 is punched to form a curved cable holding portion 62a, and the mouth portion of the curved cable holding portion 62a is a diaphragm shape. Has been.
[Selection] Figure 5

Description

  The present invention relates to an interface cable holding structure for an electronic device and an image forming apparatus including the same.

  Conventionally, since the scanner unit is often arranged at the uppermost part of the apparatus, the distance from the control board on the image forming apparatus main body side becomes longer, and the interface cable becomes longer accordingly. Since the interface cable serves as a radio wave source, the noise applied to the external board increases as the interface cable becomes longer. For this reason, it is not preferable to lengthen the interface cable. In addition, if a relay such as a crimp terminal is inserted into the interface cable, noise is added to the transferred image information and the image information deteriorates.

The control board of the image forming apparatus main body is often housed in an electrical box that houses the control board or the like as an EMI countermeasure. And in order to ensure the maintainability of the unit arrange | positioned at the back side of an electrical equipment box, rotating the electrical equipment box itself and opening the inside of an apparatus is generally performed (for example, refer patent document 1).
For such a device, when the interface cable is routed so as to pass through the rotation fulcrum side of the electrical equipment box, the interface cable is detoured and routed, resulting in a problem that the interface cable becomes long.
On the other hand, if the cable is routed without detouring the interface cable, the work of removing the interface cable from the electrical box every time when the electrical box is opened becomes necessary and the maintainability is lowered. In order to improve this maintainability, parts such as an edge saddle that can hold the interface cable by inserting the interface cable into the slit are used (for example, see Patent Document 2). However, if the edge saddle is attached separately, the number of parts increases, and it is necessary to form a hole for attaching the edge saddle or attach a screw.

JP 2007-148067 A Japanese Patent Laid-Open No. 5-13965

  Accordingly, the present invention has been made in view of the above-described problems, and an object of the present invention is to provide an interface cable holding structure for an electronic device excellent in maintainability while minimizing the total length of the interface cable, and image formation including the same. An object is to provide an apparatus.

The features of the present invention, which is a means for solving the above problems, are listed below.
The electronic device interface cable holding structure according to claim 1 includes a first control board provided with a control circuit for controlling the operation of the electronic device, and a second control circuit provided for controlling the operation of the electronic device. A control board, an interface cable connecting the first control board and the second control board, and a space where the first control board is provided and a space where the second control board is provided In the interface cable holding structure of an electronic device comprising a partition plate, the partition plate is made of sheet metal, and a portion of the partition plate is punched to form a curved cable holding portion. The mouth portion of the holding portion is characterized by a diaphragm shape.

The interface cable holding structure for an electronic device according to claim 2 is the interface cable holding structure for an electronic device according to claim 1, wherein the cable insertion path of the curved cable holding portion is J-shaped. And
An interface cable holding structure for an electronic device according to a third aspect is the interface cable holding structure for an electronic device according to the first aspect, wherein the interface cable is a cabtyre cable.
The interface cable holding structure for an electronic device according to claim 4 is the interface cable holding structure for an electronic device according to claim 3, wherein the opening width of the mouth portion of the curved cable holding portion is the diameter of the captyre cable. It is characterized by being smaller.

The interface cable holding structure for an electronic device according to claim 5 is the interface cable holding structure for an electronic device according to claim 4, wherein the shape of the edge portion for inserting the cable of the cable holding portion is partially different. It is characterized by.
The interface cable holding structure for an electronic device according to claim 6 is the interface cable holding structure for an electronic device according to claim 4, wherein the interface holding cable is inserted into the cable insertion edge of the cable holding portion when the interface cable is inserted. It is characterized by being bent so as not to be scratched.
The interface cable holding structure for an electronic device according to claim 7 is the interface cable holding structure for an electronic device according to claim 4, wherein a conductive member having a spring property is connected to the inside of the captyre cable with respect to the captyre cable. The conductive member and the cable holding part are in contact with each other, and the conductive member is grounded to the partition plate when the captyre cable is held by the cable holding part. Features.

The interface cable holding structure for an electronic device according to claim 8 is the interface cable holding structure for an electronic device according to claim 7, wherein the first control board or the second control board is housed in an electrical box. The partition plate is any surface of the electrical box.
The interface cable holding structure for an electronic device according to claim 9 is the interface cable holding structure for an electronic device according to claim 8, wherein the electrical box rotates with one end thereof as a rotation fulcrum. .
The interface cable holding structure for an electronic device according to claim 10 is the interface cable holding structure for an electronic device according to claim 9, wherein the partition plate is on a surface other than the surface having the rotation fulcrum of the electrical box. It is characterized by that.

The interface cable holding structure for an electronic device according to claim 11 is the interface cable holding structure for an electronic device according to claim 1, wherein the partition plate is provided with a retaining member for restricting movement of the interface cable. It is provided.
The interface cable holding structure for an electronic device according to claim 12 is the interface cable holding structure for an electronic device according to claim 1, wherein a step is formed in the cable holding portion of the partition plate by step bending. It is characterized by that.
An interface cable holding structure for an electronic device according to claim 13 is the interface cable holding structure for an electronic device according to any one of claims 1 to 12, and an image forming apparatus main body that forms an image on a document sheet; A scanner unit provided in the main body of the image forming apparatus, and the interface cable connects the main body of the image forming apparatus and the scanner unit.
An interface cable holding structure for an electronic device according to a fourteenth aspect is characterized in that the interface cable holding structure for an electronic device according to any one of the first to thirteenth aspects is provided.

The electronic device interface cable holding structure as the means for solving the above problems and effects are as follows.
In the first aspect of the present invention, the partition plate is made of sheet metal, and a part of the partition plate is punched to form a curved cable holding portion, and the mouth portion of the curved cable holding portion is a drawing shape. Has been. Therefore, the cable can be held by the partition plate using one side of the parts such as the electrical box, so there is no need to use an interface cable holding / protecting member such as an edge saddle, and the number of parts can be reduced. Can do. As a result, the cost can be reduced, and the amount of work when assembling the image forming apparatus can be reduced.

In the invention according to claim 2, since the cable insertion path of the curved cable holding portion is J-shaped, it is possible to prevent the interface cable from being detached from the cable holding portion.
In the invention according to claim 3, since the interface cable is a cabtyre cable, the protective coating on the surface has elasticity, and the interface cable can be easily inserted into the cable holding portion. Further, when it is assumed that the cable and the cable holding portion are rigid bodies, a very large force is required to fit the cable into the cable holding portion, but in the present invention, the surface of the cable is made of resin and is flexible. Therefore, a large force is not required when the interface cable is held by the cable holding portion, and the interface cable can be securely held.

In the invention according to claim 4, since the opening width of the mouth portion of the curved cable holding portion is smaller than the diameter of the captyre cable, it is directed toward the tip portion of the cable holding portion while deforming the protective covering on the cable surface. An interface cable can be inserted.
In the invention according to claim 5, since the shape of the cable insertion edge portion of the cable holding portion is partially different, for example, the rigidity of the tip portion of the cable holding portion is made weaker than other portions, The interface cable can be held with sufficient force.
According to the sixth aspect of the invention, the cable insertion edge portion of the cable holding portion is bent so that the interface cable is not damaged when the interface cable is inserted. By this bending, no force is locally applied to the protective coating, so that the protective coating is not damaged and the cable can be smoothly inserted.

In the invention according to claim 7, when the conductive member having spring property is attached to the captyre cable so as to contact the conductive part inside the captyre cable, and the captyre cable is held by the cable holding part, the conductive Since the conductive member and the cable holding portion are in contact with each other and the conductive member is grounded to the partition plate, the cable can be grounded without adding screws, and the assembling property and the maintainability can be improved. .
In the invention according to claim 8, since the control board is housed in the electrical box, and the partition plate is any surface of the electrical box, the device for housing the control board in the electrical box as a measure against EMI On the other hand, it is possible to provide an interface cable holding structure that is low in cost and reduces the amount of work during assembly.
In the invention according to claim 9, since the electrical box is rotated with one end thereof as a rotation fulcrum, the unit disposed on the back side of the electrical box can be easily and inexpensively maintained.

In the invention according to claim 10, since the partition plate is on a surface other than the surface having the rotation fulcrum of the electrical box, it is necessary to remove the harness from the electrical box every time the electrical box is rotated. The harness can be attached and detached more easily than when using an edge saddle or the like.
In the invention described in claim 11, since the partition plate is provided with a retaining member for restricting the movement of the interface cable, the interface connector is prevented from being damaged when the interface cable is pulled during assembly. Can be prevented.
In the invention described in claim 12, since the step is formed in the cable holding portion of the partition plate by the step bending process, the detachment of the interface cable from the cable holding portion can be suppressed.
In the invention according to the thirteenth aspect, since the scanner unit is arranged at the uppermost part of the device, the distance from the electrical box is likely to be long, and the interface cable holding structure of the present invention can be suitably used.

  The best mode for carrying out the present invention will be described below with reference to the drawings. Note that it is easy for a person skilled in the art to make other embodiments by changing or correcting the present invention within the scope of the claims, and these changes and modifications are included in the scope of the claims. The following description is an example of the best mode of the present invention, and does not limit the scope of the claims.

Embodiments of the present invention will be described below with reference to the drawings.
[First Embodiment]
FIG. 1 shows a housing structure of an image forming apparatus including a first embodiment of an interface cable holding structure for an electronic device according to the present invention. The structure 1 has a substantially cubic shape. A scanner unit 3 is provided on the upper surface side of the housing 2 constituting the image forming apparatus main body. The interface cable 4 from the scanner unit 3 is connected to the control board in the electrical box 6 through the interface cable holding structure 5 of the present invention. More specifically, as shown in FIG. 2, the scanner unit 3 is provided with a first control board 31 provided with a control circuit for controlling the operation of the scanner, and the electrical box 6 is provided with the main body of the image forming apparatus. A second control board 61 provided with a control circuit for controlling the operation is provided. The first control board 31 and the second control board 61 are connected by the interface cable 4. Any surface of the electrical box 6, in this embodiment, the upper partition plate 62, partitions the space S 1 in which the first control board 31 is provided and the space S 2 in which the second control board 61 is provided. ing. Of course, a large number of partition plates may exist between the space S1 and the space S2, but the present invention is applied to at least one of the partition plates.

As shown in FIG. 3, the electrical box 6 has a thin rectangular parallelepiped shape, and the interface cable holding structure 5 of the electronic device of the present invention is provided on the upper surface of the box. In the drawing of the electrical box 6, a hinge part 63 composed of a pair of protrusions is provided on the left end side, and the electrical box 6 rotates with the hinge part 63 as a pivot point. When the electrical box 6 is rotated, the parts on the back side of the electrical box 6 are exposed to the outside, so that the parts can be replaced or repaired. Since the partition plate 62 is on the upper surface of the electrical box 6 and is on a surface other than the surface having the rotation fulcrum, it is necessary to remove the interface cable 4 every time the electrical box 6 is rotated. The total length of the interface cable 4 can be shortened.
The electrical equipment box 6 is provided with a back cover 64. When the plurality of screws provided at the corners of the back cover 64 are removed, the back cover 64 can be removed. When the back cover 64 of the electrical box 6 is removed, it becomes as shown in FIG. As shown in the figure, a second control board 61 having an area more than half of the back of the electrical box is provided in the electrical box 6, and an interface cable is provided at the corner of the second control board 61. 4 (shown in FIG. 2) is provided with an interface connector 65. A cable holding portion 62 a that holds the interface cable 4 is provided in the vicinity of the interface connector 65. Since the interface connector 65 is generally on the receptacle side, a plug-side connector is provided at the end of the interface cable 4. If the interface connector 65 is on the plug side, a receptacle-side connector is provided at the end of the interface cable 4. Therefore, the front end side of the interface cable 4 cannot be inserted into the cable holding portion 62a, and the cable is slid in the horizontal direction and fitted into the cable holding portion 62a.

As shown in FIGS. 5 and 6, the cable holding portion 62 a is formed by bending a part of a sheet metal partition plate 62. The cable holding part 62a has a curved shape, and the mouth part 62a1 of the curved cable holding part 62a has a diaphragm shape. Further, the cable insertion edge portion of the cable holding portion 62a is bent. More specifically, a so-called hemming process is applied to the cable insertion edge of the cable holding portion 62a. Therefore, the protective coating is not damaged when the cable is inserted. Note that notches are formed in the cable insertion edge portions to facilitate bending.
When the cable holding portion 62a is formed on the partition plate 62 in this way, the number of parts can be reduced as compared with the case where a cable holding / protecting member such as an edge saddle is used. The amount of work when assembling the image forming apparatus can be reduced.

The cable insertion path of the curved cable holding portion 62a is J-shaped. Therefore, the possibility that the interface cable 4 inserted into the cable holding part 62a is detached can be reduced. More specifically, even if some force is applied in the horizontal direction to the interface cable 4 press-fitted into the distal end portion 62a2 of the cable holding portion 62a and the interface cable 4 is detached from the distal end portion 62a2, the interface cable 4 is held by the cable in one direction. Since it does not come out from the part 62a, the interface cable 4 can be reliably stopped in the cable insertion path of the cable holding part 62a.
Various cables can be used as the interface cable 4. In this embodiment, a cabtyre cable is used. A cabtyre cable is a conductor made of stranded wire coated with a resin insulating material.
The opening width of the mouth portion 62a1 of the curved cable holding portion 62a is smaller than the diameter of the captyre cable. However, since the protective covering of the captyre cable is deformed, there is no problem in inserting the interface cable 4 into the cable holding portion 62a. Further, since the opening width is narrowed, unintentional detachment of the interface cable 4 from the cable holding portion 62a can be reliably prevented.

Further, as shown in FIG. 7, a conductive member 7 having an annular spring property is attached to the portion of the interface cable 4 held by the cable holding portion 62a. The conductive member 7 is a split sleeve and wraps the interface cable 4 while being pressed by a spring force. The protective covering of the interface cable 4 where the conductive member 7 is attached is peeled off, and the conductive member 7 and the cable conductor are in direct contact. Of course, it is also possible to form teeth on the conductive member 7 and bite into the cable conductor without removing the protective coating of the cable. When the conductive member 7 is brought into contact with the conductive wire of the cable, the cable holding portion 62a comes into contact with the conductive member 7, so that the conductive wire can be set to the same potential as the partition plate 62. For example, as shown in FIGS. 8 and 9, this configuration can be suitably used for a coaxial cable provided with a net-like shield wire. In this coaxial cable, an insulating layer 42 is formed around a core wire 41, and a shield wire 43 is provided thereon. Although the protective coating is provided on the shield wire 43, the conductive coating 7 is provided on the shield wire 43 because the protective coating is removed in FIG. 8.
The shield wire 43 is formed in a net shape along the longitudinal direction of the cable. When the shield wire 43 is grounded, it is possible to prevent noise from being applied to the signal in the core wire 41. Moreover, since the grounding is performed at the same time when the interface cable 4 is assembled, the workability is excellent. In addition, although metal, such as a copper alloy, can be used suitably for the material of the electroconductive member 7, if it has electroconductivity, it may be other than a metal. Or what gave metal plating to the surface of plastic may be used. In short, it is sufficient that at least one line in the interface cable 4 can be grounded.

[Second Embodiment]
FIG. 10 shows the interface cable 4 used in the second embodiment of the interface cable holding structure for an electronic device of the present invention. The second embodiment is different from the first embodiment only in the form of the interface cable 4. For this reason, the same members are denoted by the same reference numerals, and description thereof is omitted.
In the interface cable holding structure of the second embodiment, the interface cable 4 is provided with two ring-shaped prevention members 8. The retaining member 8 is for restricting the movement of the interface cable 4, and the cable holding portion 62a is disposed between the two rings. When the prevention member 8 is provided in this way, even if the interface cable 4 is pulled when the image forming apparatus is assembled, one of the prevention members 8 comes into contact with the cable holding portion 62a. It is possible to prevent the interface connector 65 on 61 from being damaged or to prevent the end of the interface cable 4 from coming off the interface connector 65.

[Third Embodiment]
FIG. 11 shows a cable holding portion 62a used in the third embodiment of the interface cable holding structure for an electronic device of the present invention. The fourth embodiment is different from the first embodiment only in the form of the cable holding portion 62a. For this reason, the same members are denoted by the same reference numerals, and description thereof is omitted.
A step is formed in the cable holding portion 62a by step bending. If such a step is provided, the interface cable 4 can be easily inserted and removed, and the interface cable 4 can be held with a sufficient holding force at the distal end portion 62a2. Can be held.

  In the above-described embodiment, the example in which the first control board 31 is provided in the scanner unit 3 and the second control board 61 is provided in the electrical box 6 has been described. However, the first control board 31 is provided in the electrical box 6. The provided second control board 61 may be provided in the scanner unit 3. The device connected to the electrical box 6 via the interface cable 4 may not be the scanner unit 3.

  In the above-described embodiment, the example in which the cable insertion edge portion of the cable holding portion 62a is hemmed has been described. However, the shape of the cable insertion edge portion of the cable holding portion 62a is partially different. Also good. As shown in FIG. 12, curl processing or L-shaped bending processing may be performed. When the tip end portion 62a2 of the cable holding portion 62a is bent into an L shape, the interface cable 4 can be held with an appropriate force with a sufficient contact area.

FIG. 1 is an explanatory view showing a housing structure of an image forming apparatus including a first embodiment of an interface cable holding structure for an electronic device according to the present invention. FIG. 2 is an explanatory diagram showing a connection structure between the scanner unit and the electrical box. FIG. 3 is an explanatory view showing the appearance of the electrical box. FIG. 4 is an explanatory view showing a form in which the back cover of the electrical box is removed. FIG. 5 is an explanatory view showing an electrical box including a cable holding part which is a main part of the present invention. FIG. 6 is an explanatory view showing details of the cable holding portion which is a main part of the present invention. In addition, the hemming process is given to the inner edge part of the cable holding part. FIG. 7 is an explanatory view showing a form in which a conductive member is attached to the interface cable. FIG. 8 is a cross-sectional view of a portion where the conductive member of FIG. 7 is attached. FIG. 9 is an explanatory view showing a form in which the conductive member of FIG. 7 is held by the cable holding portion. FIG. 10 is an explanatory view showing an interface cable used in the second embodiment of the interface cable holding structure for an electronic device of the present invention. FIG. 11 is an explanatory view showing a cable holding portion used in the third embodiment of the interface cable holding structure for an electronic device according to the present invention. FIG. 12 is an explanatory view showing a modification of the cable holding portion of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Structure 2 Case 3 Scanner unit 31 1st control board 4 Interface cable 5 Interface cable holding structure 6 Electrical box 61 2nd control board 62 Partition plate 62a Cable holding part 62a1 Portion 62a2 Tip part 63 Hinge part 64 Back surface Cover 65 Interface connector 7 Conductive member 8 Prevention member S1, S2 Space

Claims (14)

A first control board provided with a control circuit for controlling the operation of the electronic device;
A second control board provided with a control circuit for controlling the operation of the electronic device;
An interface cable connecting the first control board and the second control board;
A partition plate that partitions the space in which the first control board is provided and the space in which the second control board is provided;
In an interface cable holding structure of an electronic device comprising:
The partition plate is made of sheet metal,
A part of the partition plate is punched to form a curved cable holding portion, and a mouth portion of the curved cable holding portion is formed into a diaphragm shape. . In the interface cable holding structure of the electronic device according to claim 1,
The interface cable holding structure for an electronic device, wherein a cable insertion path of the curved cable holding portion is J-shaped. In the interface cable holding structure of the electronic device according to claim 1,
The interface cable holding structure for an electronic device, wherein the interface cable is a cabtyre cable. In the interface cable holding structure of the electronic device according to claim 3,
An interface cable holding structure for an electronic device, wherein an opening width of a mouth portion of the curved cable holding portion is smaller than a diameter of the captyre cable. In the interface cable holding structure of the electronic device according to claim 4,
An interface cable holding structure for an electronic device, wherein the shape of the cable insertion edge of the cable holding part is partially different. In the interface cable holding structure of the electronic device according to claim 4,
An interface cable holding structure for an electronic device, wherein the cable holding edge portion of the cable holding portion is bent so that the interface cable is not damaged when the interface cable is inserted. In the interface cable holding structure of the electronic device according to claim 4,
A conductive member having a spring property is attached to the captyre cable so as to be in contact with a conductive part inside the captyre cable, and the captyre cable is held by the cable holding part. An interface cable holding structure for an electronic device, wherein the conductive member is grounded to the partition plate. The interface cable holding structure for an electronic device according to claim 7,
The first control board or the second control board is housed in an electrical box;
The interface cable holding structure for an electronic device, wherein the partition plate is any surface of the electrical box. The interface cable holding structure for an electronic device according to claim 8,
The electrical equipment box rotates with one end thereof as a rotation fulcrum. An interface cable holding structure for an electronic device. The interface cable holding structure for an electronic device according to claim 9,
The said partition plate exists in surfaces other than the surface which has the said rotation fulcrum of the said electrical equipment box. The interface cable holding structure of the electronic device characterized by the above-mentioned. In the interface cable holding structure of the electronic device according to claim 1,
An interface cable holding structure for an electronic device, wherein the partition plate is provided with a retaining member for restricting movement of the interface cable. In the interface cable holding structure of the electronic device according to claim 1,
An interface cable holding structure for an electronic device, wherein a step is formed in the cable holding portion of the partition plate by step bending. The interface cable holding structure for an electronic device according to any one of claims 1 to 12,
An image forming apparatus main body for forming an image on an original paper;
A scanner unit provided in the image forming apparatus main body;
With
The interface cable holding structure for an electronic device, wherein the interface cable connects the image forming apparatus main body and the scanner unit. An image forming apparatus comprising the interface cable holding structure for an electronic device according to any one of claims 1 to 13.

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