JP2002240393A - Cable supporting structure and imaging apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable supporting structure in which flat cables can be held surely regardless of the wiring conditions, e.g. the layer conditions, thereof without causing any cost increase and an electromagnetic wave generated from the flat cable has no effect on other electronic components. SOLUTION: In the cable supporting structure for holding a cable C at the housing part 1, a recess 1A and supporting holes 3 are provided in the housing part 1. The supporting hole 3 is fitted with a fixing member 2 made of an oscillatory plate member and supporting a cable by inserting bend pieces 2A into the supporting holes 3. The cable C is held by means of the fixing member 2 and the recess 1A facing the fixing member 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a cable support structure and an image forming apparatus, and more particularly to a structure for holding a flat cable which is a type of harness.

[0002]

2. Description of the Related Art In an apparatus using various electric parts such as an image forming apparatus such as a copying machine, a facsimile, a printer, and a printing machine, a harness is used to connect the electric parts. The harness is a lead wire whose core wire is covered with a so-called insulating resin, and is sometimes used as a single wire, but is often used collectively depending on the structure of the wiring portion. If the harness is used collectively,
Flat cables are sometimes arranged and bundled so that the installation space is smaller than when they are bundled.

[0003] The flat cable is held using a vinyl band or the like to an immovable portion such as a housing surface located between connectors of electrical components.

[0004]

The main purpose of a vinyl band is to bundle a single lead wire, and therefore, it is not suitable for holding a flat cable which is flattened by being arranged side by side. Therefore, as shown in FIG.
It is also possible to use a clamp member A having a surface A1 on which a flat cable can be placed and a flexible piece A2 whose base is integrated with the surface and which can swing.

However, the clamp member A shown in FIG.
Although it is a general-purpose product, it is often expensive because it is a special part, so in actual wiring work, a flat cable is often attached and fixed to the housing surface using double-sided tape or a seal . Therefore, depending on the fixing member, additional work such as a work of peeling off the backing paper such as a seal is required, and wiring workability is deteriorated.

[0006] There are cases where a plurality of flat cables are damped depending on their routing conditions. In this case, if the above-mentioned double-sided tape or seal is used, the holding strength with respect to the housing surface is not obtained, and the tape is easily dropped. When a plurality of flat cables are to be held by the clamp member A shown in FIG. 4, the distance between the flexible piece A2 and the mounting surface A1 of the cable cannot be increased beyond a predetermined dimension, and Since the flexible piece A2 has a cantilever shape, the risk of the flat cable dropping off from the free end remains unresolved. As a result, when wiring work is performed in the image forming apparatus, particularly when at least one layer of flat cable is wired, there is a problem that the cost increases and the wiring workability is poor. As a result, there is a possibility that an image forming apparatus having a high cost may be obtained.

[0007] The flat cable generates and stops an electromagnetic wave by a current flowing through a core wire. Although the strength of the electromagnetic wave depends on the current flowing, it may affect electronic components arranged near the supporting position of the flat cable, so that a countermeasure is required.

SUMMARY OF THE INVENTION An object of the present invention is to provide a flat cable that can be securely connected to a flat cable without any increase in cost, irrespective of the wiring conditions such as the state of lamination of the flat cables, in view of the above-mentioned problems in the conventional cable support structure, particularly the flat cable support structure. An object of the present invention is to provide a cable supporting structure and an image forming apparatus having a configuration that can be held and that does not affect the influence of electromagnetic waves generated from a flat cable on other electronic components.

[0009]

According to the first aspect of the present invention,
A cable support structure for holding the cable in the housing portion, comprising a support hole formed of a through hole formed in the housing portion, and a plate having a surface facing the housing portion, A mounting member swingable in a direction of coming and going with respect to the housing portion with a piece portion entering the support hole as a fulcrum, wherein the mounting member has a bent piece partially entering the support hole. A fastening portion provided at an edge opposite to the edge where the bent piece is provided and fixed in a state close to the housing portion, wherein the bent piece is provided with the support hole. Part of the positive surface is placed on the inner edge of the mounting member is configured to form a swing fulcrum of the mounting member, the mounting member,
The flat cable is positioned and supported between the housing and a surface facing the housing in a state close to the housing.

According to a second aspect of the present invention, a portion of the housing portion where the support hole is formed has a concave portion bulging to a side opposite to a side facing the mounting member, and is formed by the concave portion. It is characterized in that the above-mentioned cable can be loaded in a space to be formed.

According to a third aspect of the present invention, a locking hole is provided in the housing portion at a position facing the fastening piece of the mounting member, separately from the support hole, and a part of the locking hole. A locking projection protruding inward of the locking hole is provided, and the mounting member has a portion in which a part of an edge where the fastening portion is located is bent in a direction protruding toward the locking hole. A stop piece is provided, the locking piece is provided with a fitting hole into which the locking projection of the locking hole can be fitted, and the mounting member is mounted on the housing using the bent piece as a swing fulcrum. When approaching, the engaging protrusion of the engaging hole on the housing side is fitted into the engaging hole of the engaging piece, so that the engaging piece can be held in a state where it does not fall off the housing.

According to a fourth aspect of the present invention, the bent piece and the locking piece are provided in a pair along the wiring direction of the cable, and the bent piece and the locking piece are perpendicular to the direction in which the bent piece and the locking piece face each other. The cable is laid in the direction.

The invention according to claim 5 is characterized in that the mounting member is formed of a conductive member.

According to a sixth aspect of the present invention, the cable is
It is a flat cable with harnesses arranged in parallel.

According to a seventh aspect of the present invention, a cable supporting structure according to one of the first to fifth aspects is used.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a partial perspective view of a housing portion showing a cable support structure according to an embodiment of the present invention. In FIG. 1, a cable supporting structure according to this embodiment is intended for a flat cable C in which a plurality of harnesses are arranged in parallel, and a concave portion 1 </ b> A
A main part is constituted by the mounting member 2 arranged to face A. Hereinafter, each unit will be described. Case 1
In the case of the present embodiment, is a housing of an image forming apparatus such as a copier, a printer, a facsimile machine, and a printing machine. Are provided in a pair along the wiring direction of the cable (the direction indicated by the arrow F). This allows
The flat cable C to be supported can be effectively prevented from falling in the wiring direction.

As shown in FIG. 1B, a concave portion 1A bulging to the opposite side to the surface facing the mounting member 2 to be described later is formed at the position where the support hole 3 is formed in the housing portion 1. Have been. The recess 1 </ b> A is a portion that constitutes a space for accommodating the flat cable C facing the attachment member 2 described below.

As the mounting member 2, a plate made of a conductive material is used, and in this embodiment, a metal plate which can be processed by sheet metal is used. The attachment member 2 has a bent piece 2A that can enter the support hole 3 and a hole 2B that forms a fastening portion provided at an edge opposite to the edge where the bent piece 2A is provided. Is provided. The bent piece 2A is shaped so that a part of the bent surface can be placed on the inner edge of the support hole 3, and in the present embodiment, is bent into an angle. When the bent piece 2 </ b> A enters the support hole 3, a part of the bent piece 2 </ b> A is placed on the inner edge of the support hole 3, and as shown in FIG. The swing fulcrum that can be brought into and out of contact with each other is constituted.

In FIG. 1B, the bent piece 2A is formed in an angle (L-shape), but each L-shape is not a right angle. The base of the bent piece 2A (for convenience, indicated by reference numeral 2A1 in FIG. 1B) is a surface of the mounting member 2 that faces the recess 1A on the housing 1 side (for convenience, FIG. 1B).
2C), and the front end (indicated by reference numeral 2A2 in FIG. 1B for convenience) bent to the base 2A has an acute angle with respect to the base 2A1. (The angle indicated by the symbol θ in FIG. 1B).
For this reason, the tip 2A2 of the bent piece 2A is not parallel to the surface 2B of the mounting member 2 that faces the recess 1A of the housing 1.

The base 2A1 and the tip 2 of the bent piece 2A
When the tip 2A2 abuts against the inner surface of the support hole 3 because the tip A2 is at an acute angle, an elastic repulsive force is generated at the tip 2A2 when the mounting member 2 swings. For this reason, the bent piece 2 </ b> A is pressed against the inner surface of the support hole 3 so as to be hard to come off, and when the fastening portion is fastened to the housing 1, it does not accidentally come off the support hole 3.

In this embodiment, the tip 2A2 of the bent piece 2A
When the mounting member 2 swings in the direction approaching the housing 1 due to the bent state of the above, a configuration is provided which can prevent the difficulty in fastening due to the elastic repulsion. This configuration includes a locking hole 4 provided in the housing 1 and a locking piece 2D provided in the mounting member 2. In FIG. 1, a locking hole 4 is provided in the housing 1 at a position where the swinging end of the mounting member 2 is close to the housing. The locking hole 4 is provided with a locking projection 4 </ b> A partially formed of a cut and raised piece, and the locking projection 4 </ b> A can be engaged with the mounting member 2 side.

The mounting member 2 has a pair of locking pieces 2 near the fastening portion 2B along the wiring direction of the flat cable C.
D is provided. The locking piece 2D is formed by a cut-and-raised piece, and a fitting hole 2D1 penetrating in the thickness direction is provided in a part thereof. The locking projection 4A can be fitted into the fitting hole 2D1.

Since the present embodiment has the above configuration,
As shown in FIG. 1B, the mounting member 2 is a bent piece 2A.
Swinging in the direction approaching the housing portion 2 with the fulcrum as a fulcrum, the fitting hole 2D1 located on the locking piece 2D on the mounting member 2 side faces the locking projection 4A on the housing portion 1 to lock. The protrusion 4A can be fitted in the fitting hole 2D1. Thereby, even if the fastening portion 2B of the attachment member 2 is not yet fastened, the swinging end of the attachment member 2 is locked at A against the elastic repulsion at the tip 2A2 of the bent piece 2A; In other words, the attachment member 2 is temporarily fixed, and the flat cable C located in the concave portion 1A can be sandwiched and supported. In addition, since the flat cable C can be supported in a state where it is positioned in the concave portion 1A, there is no careless pressing by the fastening operation of the mounting member 2 on the flat cable C, so that the flat cable C may be damaged. Absent.

The attachment member 2, which can hold the flat cable C located in the concave portion 1A while covering the flat cable C irrespective of the elastic repulsion at the bent piece 2A,
Since the flat cable C is shielded, the electromagnetic waves generated from the flat cable C can be shielded. The mounting member 2 is connected to the housing 1 via a fastening member or the like.
, A part of the ground circuit can be configured, so that the influence of the electromagnetic wave from the flat cable C can be prevented from being applied to the nearby electronic components.

Next, a modified example according to the embodiment of the present invention will be described. In the members described below, the same components as those shown in FIG. 1 are denoted by the same reference numerals. FIG.
Shows a modification of the attachment member (indicated by the reference numeral 2 'for convenience). In the figure, the attachment member 2' is provided with a fall prevention portion 2 of the flat cable C between the bent pieces 2A.
E is provided. In this configuration, as shown in FIG. 3, a case where a plurality of flat cables C are supported is an object. That is, as shown in FIG. 3A, when it is desired to support a plurality of flat cables C at the same place, the bent piece 2A of the mounting member 2 'is inserted into the support hole 3, and the flat cable C is connected at this stage. It is positioned on the recess 1A or on the fall prevention portion 2E of the mounting member 2 '. In the process of swinging the mounting member 2 ', the fall prevention unit 2E prevents the flat cable C from dropping off the mounting member 2'.

FIGS. 1C and 3C show a state in which the attachment members 2 and 2 'in the state shown in FIGS. 1A and 3A swing toward the paper surface. In this state, since the locking projection 4A and the fitting hole 2D1 are fitted in each other, the fastening operation to the fastening portion 2B can be performed without any holding operation of the mounting members 2 and 2 '.

[0028]

According to the first aspect of the present invention, the bending member formed on one of the edges of the mounting member is fitted into the supporting hole of the housing portion and is swung, whereby the mounting member is rotated. Can be brought into a state of being close to the housing portion, and the cable can be held by simply loading the cable between the housing portion and the surface facing the housing portion. In particular, since the mounting member is formed of a plate material and has a simple configuration in which the cable is sandwiched in a state of being covered with the housing, the mounting member can be formed in a simple shape that can prevent the cable from falling off, thereby preventing an increase in cost. Can be.

According to the second aspect of the present invention, a recessed portion is provided at a position where the support hole is formed in the housing portion, on the side opposite to the side facing the mounting member, and the cable is loaded into the recessed portion. Since it is possible, even when the mounting member swings in a direction approaching the housing, the mounting member does not receive an unexpected pressing external force by the mounting member. This allows the cable to be supported without damaging the cable.

According to the third aspect of the present invention, the mounting member is provided separately from the support hole at the end opposite to the end where the bent piece is provided, and has a locking projection at a part thereof. Since the locking piece that can be fitted into the stop hole is provided, when the mounting member is swung toward the housing with the bent piece as a fulcrum, the locking piece is engaged with the locking hole before fastening. A simple temporary fixing state can be obtained only by fitting the retaining projections. Thus, when the cable is swung toward the housing with the cable loaded between the housing and the housing, the mounting member can be prevented from being inadvertently dropped off from the housing, and the cable can be reliably prevented. The cable can be held.

According to the fourth aspect of the present invention, since the bent piece and the locking piece are provided as a pair along the wiring direction of the cable, even if the cable falls down in the wiring direction, the cable by the mounting member is used. Can be held.
Accordingly, it is possible to prevent the cable from falling down in the wiring direction, which is likely to occur when the number of stacked cables is large, and to reliably maintain the supporting state of the cable.

According to the fifth aspect of the present invention, since the mounting member is formed of a conductive member, the electromagnetic wave shielding member is located at a position facing the cable. Thereby, it is possible to prevent the electromagnetic wave generated from the cable from affecting the nearby electronic components.

According to the sixth aspect of the present invention, even when a flat cable in which harnesses are arranged in parallel is targeted, the flat cable is loaded into the space in the concave portion of the housing and prevented from falling off by the mounting member. It is possible to do. In particular, even when the flat cable is used in a laminated state, the flat cable is sandwiched between the concave portion and the mounting member facing the concave portion, so that displacement and dropping out can be reliably prevented.

According to the seventh aspect of the present invention, a cable,
In particular, it is possible to obtain a mounting member serving as a support member for the flat cable without increasing costs, and
Since the effect of electromagnetic waves on the electronic components arranged near the support position of the flat cable in the device can be almost eliminated, malfunction of the device can be prevented beforehand.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a cable support structure for explaining an example according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a modification of a mounting member used in the support structure shown in FIG.

FIG. 3 is a perspective view showing a cable support structure using the attachment member shown in FIG. 2;

FIG. 4 is a side view showing an example of components used for a cable support structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing part 1A recessed part 2 Mounting member 2A Bending piece 2B Hole which is a fastening part 2D Locking piece 2D1 Fitting hole 3 Supporting hole 4 Locking hole 4A Locking projection C Flat cable

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) H02G 3/26 HF term (Reference) 2C061 AP03 AP04 CG03 CG06 CG07 CG08 CP08 CP09 2H071 EA08 3J022 EA16 EB14 EC14 EC24 ED26 FA01 FB03 FB12 GA06 GA16 GB23 GB24 5G363 AA16 BA05 DA13 DA15 DC08

Claims (7)

[Claims] 1. A cable support structure for holding a cable in a housing, comprising: a support hole formed by a through hole formed in the housing; and a surface facing the housing. A mounting member that is swingable in a direction of coming and going with respect to the housing portion with a piece portion that enters the support hole as a fulcrum, and the mounting member has a part in the support hole. A bent piece to be inserted, and a fastening portion provided on an edge opposite to the edge where the bent piece is provided and fixed in a state close to the housing part, Has a shape in which a part of a positive surface is placed on the inner edge of the support hole to form a swing fulcrum of the mounting member. The flat cable is positioned and supported between the flat cable and the surface facing the flat cable. Cable support system according to claim and. 2. The cable support structure according to claim 1, wherein a portion of the housing where the support hole is formed has a concave portion bulging to a side opposite to a side facing the mounting member, A cable support structure, wherein the cable can be loaded into a space defined by the concave portion. 3. The cable support structure according to claim 1, wherein the housing has a locking hole separately from the support hole at a position facing the fastening piece of the mounting member. A locking projection that is provided on the mounting portion and protrudes inward of the locking hole; a direction in which a part of an edge where the fastening portion is located projects toward the locking hole on the mounting member; An engaging piece is provided, the engaging piece being fitted with an engaging projection of the engaging hole, and the mounting member pivotally supports the bent piece. It is characterized in that it can be held in a state in which it does not fall off from the housing part by being fitted with a locking projection of the locking hole on the housing side in a fitting hole of the locking piece when approaching the housing. Cable support structure. 4. The cable supporting structure according to claim 1, wherein the bent piece and the locking piece are provided as a pair along a wiring direction of the cable, and the bent piece and the locking piece are provided in a pair. A cable support structure, wherein the cable is laid in a direction perpendicular to a direction in which the cables face each other. 5. The cable support structure according to claim 1, wherein the attachment member is formed of a conductive member. 6. The cable support structure according to claim 1, wherein the cable is a flat cable in which harnesses are arranged in parallel. 7. An image forming apparatus using the cable support structure according to claim 1.