JP2012054458A - Retainer (fixture) for holding flexible flat cable, and image forming apparatus using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a retainer for holding a flexible flat cable, which is excellent in workability by virtue of structural simplicity and which is formed in a shape capable of avoiding damage to the flexible flat cable.SOLUTION: A retainer 25 for holding a flexible flat cable, which comprises a metal wire rod such as a spring steel wire, assumes a basic form in which two linear bodies 29 are connected together via an apex 28. A first arrowhead-shaped engaging portion 30 is formed at a leading end, and a second lateral engaging portion 31 is formed at the other end. A portion positioned on the flexible flat cable 22 is formed as a downward convexly curved portion 32. The engaging portions 30 and 31 can be inserted into engaging holes 26 and 27 by making the retainer 25 narrower so that both the linear bodies 29 can adhere tightly to each other.

Description

  The present invention relates to a holding holder for a flexible flat cable (FFC) and an image forming apparatus using the same. The image forming apparatus includes various types such as a single-function machine such as a copying machine, a printer, and a facsimile machine, and a multi-function machine (multi-function machine) having a plurality of functions such as a copying function, a printing function, a scanner function, and a communication function.

  Flexible flat cables are widely used in image forming apparatuses such as copying machines and multifunction peripherals, or various electronic apparatuses and devices. For example, in the case of an image forming apparatus, it is used for transmission of image data signals and the like. The current passing through the flexible flat cable is often weak and delicate, and the flexible flat cable radiates electromagnetic waves due to the antenna effect and may cause noise for other devices.

  Therefore, the flexible flat cable is often fixed to the support so as not to move. On the other hand, the flexible flat cable must be released for maintenance and repair of the apparatus, and therefore, the operation of fixing and releasing is required to be simple.

  For example, a double-sided adhesive tape is used as a fixing means for the flexible flat cable. However, this is not easy even if it is attached or peeled off. It can also damage the cable.

  On the other hand, a one-touch type holding holder has also been proposed. For example, Patent Document 1 discloses a two-part system including a holder portion fixed to a support with an adhesive tape and an arm portion attached to the holder portion from above. Are disclosed.

  Further, in Patent Document 2, the first concave portion is prevented by forming the first concave portion (long groove) into which the flexible flat cable is fitted in the housing constituting the image forming apparatus. A second concave portion having a deepened depth is formed in a part thereof, and a fixing means is arranged at the location of the second concave portion. As means for holding the fixing means in a predetermined position / posture, it is disclosed to use a magnet or to insert both ends into the engaging groove using elastic deformation of the fixing means itself.

JP 2009-183133 A JP 2004-274613 A

  Now, electronic devices such as image forming apparatuses are becoming smaller in size and higher in density, and the arrangement space of the flexible flat cable and the arrangement space of the holding holder are often limited. Therefore, the holding structure of the flexible flat cable should be as simple as possible, and the holding tool is preferably as compact as possible. Low cost and easy attachment / detachment are strongly required as basic functions.

  However, since the thing of patent document 1 is a two-part system, it is bulky and may be an obstacle to the arrangement of other members, a problem that costs increase, and the holder part must be fixed with an adhesive tape. There are problems such as troublesome work.

  On the other hand, the technique of Patent Document 2 is poor in generality because it forms a recess in the housing. Also, if a magnet is used as the fixing method of the fixing means, there is a problem that it may fall off during transportation of the device. Yes, it ’s hard to say. On the other hand, when the fitting method in the engaging groove is adopted as the fixing means, the fixing means (strip) is bent and deformed like a bow and both ends thereof are fitted into the engaging grooves. It can be said that it is troublesome to bend the fixing means like a bow at the time of removal, and it can be said that the removal work is troublesome.

  The present invention has been made to improve the current situation.

  The present invention includes a holding holder for a flexible flat cable and an image forming apparatus using the same. The invention of claim 1 relates to a holding holder, and the present invention is arranged such that the flexible flat cable stacked on a plate-like support body is arranged in a manner of crossing the one end and protrudes from the flexible flat cable. In the holder made of an elastic body that holds and holds the flexible flat cable in the support body by inserting a part and the other end part into an engagement hole provided in the support body, the one end part and the other end part Any one or both of them are elastically deformed so that the interval in the same direction as the longitudinal direction of the flexible flat cable is narrowed to form an engaging portion that can be inserted into and removed from the engaging hole.

  The invention of claim 2 embodies the invention of claim 1, and in this invention, the invention comprises two linear bodies extending across the flexible flat cable, and the two linear bodies Is connected integrally at the apex portion on one side of the flexible flat cable, and one end portion including the apex portion is a first engaging portion having an arrowhead shape in plan view, A second engaging portion is formed at the other end of the body in opposite directions. By narrowing the two linear members so that the distance between the two linear members is reduced, the two engaging portions are connected to the support body. It can be inserted into and removed from the engagement hole.

  The invention of claim 3 embodies claim 1 or 2, and in this invention, the holding holder is manufactured by bending a metal wire having spring properties. The invention of claim 4 embodies the inventions of claims 1 to 3, and in this invention, there is one convex curved portion facing the flexible flat cable in the portion overlapping the flexible flat cable in the plan view. Alternatively, a plurality of the curved portions are formed, and the lower end of the curved portion is formed as a contact portion with respect to a portion on the inner side of the longitudinal side edge portion of the flexible flat cable.

  According to a fifth aspect of the present invention, the invention according to the fourth aspect of the present invention is suitably embodied. In the present invention, an operation portion that allows a person to apply a fingertip to each of the two linear bodies is provided in the first engagement. The two linear bodies can be brought closer to each other by pushing both operation parts so as to approach each other. .

  The invention according to claim 6 is applied to an image forming apparatus, and the image forming apparatus is arranged to overlap a flexible flat cable, a support made of a plate material on which the flexible flat cable overlaps, and the flexible flat cable so as to cross the flexible flat cable. One end of the support that is inserted into the engagement hole of the support, while the support has an engagement hole on both sides of the flexible flat cable. And the other end portion, and the one or both of the one end portion and the other end portion of the holding holder are pressed and shrunk in the same direction as the longitudinal direction of the flexible flat cable. An engaging portion that can be inserted into and removed from the hole is formed.

  The holding holder of the present invention is fitted into a pair of engagement holes provided in the support, and it is only necessary to have two engagement holes in the support, and the flexible flat cable is overlaid on the support Since the holding structure of the flexible flat cable is simple, the holding holder can be a single part, so it is compact regardless of the location and can contribute to space saving. And since one part is sufficient, manufacturing cost can also be suppressed.

  In addition, the engaging part of the holding holder can be inserted into and removed from the engaging hole by elastically deforming so that the interval in the same direction as the longitudinal direction of the flexible flat cable is narrowed. Since the direction intersects with the direction in which the interval between the engaging portions changes, an operation of narrowing the width of the engaging portion by holding the holding holder can be easily performed. Therefore, the flexible flat cable can be easily attached and detached.

  If the structure of Claim 2 is employ | adopted, since the 1st engaging part has an arrowhead shape, it can perform very easily inserting the said 1st engaging part in an engagement hole. Moreover, although the 2nd engaging part is hook-shaped, the 2nd engaging part can be easily inserted in an engaging hole by changing a holding holder so that a mutual space | interval may become narrow. Therefore, as a whole, the holding holder can be quickly set on the support, and the workability is excellent.

  In addition, it is possible to remove only the first engagement portion from the engagement hole of the support body by shifting the entire holding holder while the second engagement portion is inserted into the engagement hole. The flexible flat cable can be separated from the support while the holding holder is attached to the support. For this reason, it is possible to remarkably reduce the trouble of re-fixing the flexible flat cable, and it is possible to prevent the holding holder from being lost.

  The holding holder can be a resin molded product or a sheet metal product, for example. However, when the metal wire material is manufactured as described in claim 3, high durability is maintained while maintaining an appropriate spring property. It can be secured. In addition, costs can be suppressed.

  A flexible flat cable is a cable in which a group of harnesses (cables) arranged in parallel is covered with a resin layer from both the front and back sides, so that deformation can be easily done. As a result, the flexible flat cable and the support (component of the apparatus) move relative to each other, and the surface of the flexible flat cable may be rubbed. Further, the flexible flat cable may be repeatedly stretched and bent by the operation of the apparatus. In this case, the flexible flat cable and the support may move relative to each other, and the surface of the flexible flat cable may be rubbed.

  In that case, since the flexible flat cable often moves relative to the support in a twisted state, it can be said that the flexible flat cable is often rubbed by the support at the longitudinal side edge portion rather than the left and right intermediate portions. That is, it can be said that the flexible flat cable is easily rubbed by the support at its longitudinal edge.

  And when the flexible flat cable is held and supported by the support over its entire width, the long side edge is strongly in contact with the support. It can be said that the layer is easily damaged by rubbing against the support. If the covering layer is scraped off and the harness is exposed, it may cause a short circuit. It can be said that the risk of damage is further increased when the coating layer is thinned to facilitate deformation.

  On the other hand, when the portion inside the longitudinal side edge is pressed by the curved portion as in claim 4 of the present invention, the longitudinal side edge is easily deformed when the flexible flat cable moves relative to the support. Therefore, even if the longitudinal side edge slides on the support, it does not hit strongly, so that damage can be prevented. In addition, since the flexible flat cable is easily deformed so that the long side edge is separated from the support, it is possible to prevent the long side edge from sliding with respect to the support. It can be said that it can be prevented.

  When a downwardly curved portion is formed in the holding holder as in claim 4, the holding holder necessarily has a portion protruding upward from the support plate. By forming the operation portion in the protruding portion, the pressing holder holding operation (or the interval narrowing operation) can be performed more easily. The operation portion also functions as a stopper that restricts the insertion depth of the first engagement portion, and the pressing holder is the first even when the second engagement portion is removed from the engagement hole. It is possible to prevent re-entry into the engaging hole and easily perform the fixing work again.

1 is a schematic diagram of an image forming apparatus to which the present invention can be applied. It is a separate perspective view of the principal part. It is a figure which shows a principal part, (A) is a top view of the holding holder in a free state, (B) is a top view of the holding holder in a closed state, (C) is a flexible flat cable as a support FIG. 4D is a plan view in a stacked state, FIG. 4D is a plan view in a state where a holding holder is attached, and FIG. 5E is an EE front sectional view of FIG.

  Next, an embodiment of the present invention will be described with reference to the drawings. First, an example of an image forming apparatus to which the present invention can be applied will be described with reference to FIG.

(1). Image Forming Apparatus As shown in FIG. 1, the image forming apparatus according to the present embodiment is of a tandem color digital printing system, and has one or more stages disposed in the lower part of the inside of the main body case 1. Paper feed cassette 2, image process unit 3 disposed above paper feed cassette 2, paper discharge tray 4 formed above image process unit 3, and paper P from paper feed cassette 2 toward paper discharge tray 4 A conveyance path 5 is provided, and an image scanner unit 6 with a cover is provided above the paper discharge tray 4. The image scanner unit 6 is provided with an operation panel 7 with a display.

  The image processing unit 3 includes four image forming units 8Y, 8M, 8C, and 8K corresponding to four colors of yellow Y, magenta M, cyan C, and black K. The four image forming units 8Y to 8K are arranged so that the yellow image forming unit 8Y is farthest from the transport path 5 and the black image forming unit 8K is close to the transport path 5, and intermediate transfer is performed from these image forming units 8Y to 8K. The toner image is primarily transferred to the belt 9. Although not shown, four toner storage units corresponding to the image forming units of the respective colors are arranged above the intermediate transfer belt 9.

  The intermediate transfer belt 9 is wound around a driving roller 10 disposed close to the conveyance path 5 and a driven roller 11 disposed outside the yellow image forming unit 8Y, and the toner carried on the intermediate transfer belt 9 is wound around the intermediate transfer belt 9. The image is secondarily transferred to a sheet (recording sheet) P at the position of the driving roller 10. The sheet P is pressed against the intermediate transfer belt 9 by the secondary transfer roller 12. A waste toner collecting container 13 is disposed outside the driven roller 11.

  Each of the image forming units 8 </ b> Y to 8 </ b> K has a photosensitive drum 14. An exposure unit 15 is disposed below the image processing unit 3, and the surface of each photosensitive drum 14 is irradiated with laser light 16 from the exposure unit 15 to form an electrostatic latent image on the photosensitive drum 14. Is done.

  As the paper P discharged from the paper feed cassette 2 is transported through the conveyance path 5, the toner image is secondarily transferred from the intermediate transfer belt 9 and then sandwiched between the fixing roller 17 and the pressure roller 18. As a result, the image is fixed, and is then discharged onto the discharge tray 4 by the discharge roller 19.

  The image reader unit 6 has a document table made of glass. As is well known, an original is read by a scanner and separated into three primary colors of red (R), green (G), and blue (B). Each color data is converted into an electrical signal by an image sensor, and image data is obtained. Is obtained. The image data is processed by the control unit 20 and converted into image data of reproduction colors of cyan (C), magenta (M), yellow (Y), and blank (K).

  The image data converted into reproduced colors is stored in the memory 21 of the control unit 20 for each color, subjected to image correction necessary for correcting misregistration, and then operated corresponding to each color in synchronization with the supply of the paper P. The data is read out line by line and output as a light emitting diode drive signal in the exposure unit 15. Then, the laser beam 16 irradiated from the exposure unit 15 via the mirror mechanism scans the surface of each photosensitive drum 14, thereby forming an electrostatic latent image on the surface of the photosensitive drum 14.

  Then, the image data signal subjected to data processing in the control unit 20 is transmitted to the exposure unit 15 through the flexible flat cable 22. The flexible flat cable 22 extends from the control unit 20 to the exposure unit 15 in a state in which the inside of the main body case 1 is drawn. Therefore, it is necessary to fix one place or a plurality of places to a support body such as a machine frame. The holding holder of the present invention can be used for fixing (holding and holding) the flexible flat cable 22 for transmitting image data. Of course, it can also be used for fixing flexible flat cables used in other parts.

(2) Pressing holder Next, a holding structure and a holding holder for the flexible flat cable 22 will be described with reference to FIGS. In the following description and claims, the term “plan view” is used, which means a case where it is arranged on a horizontal plane, and the holding holder of the present invention is a wall surface or a ceiling surface. It does not mean that it cannot be used.

  The flexible flat cable 22 is overlapped with a support 24 made of a metal plate, and this is pressed and held by a holding holder 25 arranged so as to cross the flexible flat cable 22. A rectangular (rectangular) first engagement hole 26 and a second engagement hole 27 are vacant at portions of the support 24 that are located on both sides of the flexible flat cable 22. Although both engagement holes 26 and 27 are the same size and do not need to be distinguished from each other, they are distinguished by attaching the first and second indications for the convenience of explanation.

  The holding holder (fixing tool) 25 of the present embodiment is manufactured using a metal wire having elasticity such as a spring steel wire or a stainless steel wire as a material, and has a basic form in which one wire is folded in two. . Therefore, it has two elongated linear bodies 29 having one end connected by the apex 28, and in a free state where no external force is applied, as can be clearly understood from FIG. The interval between the two linear bodies 29 has a V shape that widens from the apex 28 toward the free end.

  One end portion including the apex 28 of the presser holder 25 is an arrowhead-shaped (or arrow-shaped) first engagement portion 30 having a V shape and a flange portion 30 a, and on the other hand, both linear bodies 29. At the other end (free end), a hook-shaped second engaging portion 31 protruding in the opposite direction in plan view is formed by bending. Accordingly, the free ends of the two linear bodies 29 have an L shape in plan view.

  In the free state, the distance dimension W2 between the other ends of the two linear bodies 29 is larger than the vertical width dimension L1 of the engagement holes 26 and 27 (the dimension measured in the longitudinal direction of the flexible flat cable 22). Yes. Further, the maximum width dimension W1 of the first engagement portion 30 in the free state is also set to a value larger than the vertical width dimension L1 of the engagement holes 26 and 27.

  As shown in FIG. 3B, both linear bodies 29 can be deformed against the elasticity of the apex 28 so as to overlap each other. That is, it can be narrowed (or narrowed). When the first engagement portion 30 is deformed in such a narrow manner, the maximum width dimension of the first engaging portion 30 is inevitably reduced from W1 to W1 ′. The narrowed width dimension W1 ′ is set to the diagonal direction of the engagement holes 26 and 27. The dimension is set slightly smaller than the dimension L2.

  Therefore, when the holding holder 25 is fully closed, as shown by a one-dot chain line in FIG. 3 (C), an oblique posture extending long in a direction (direction A) perpendicular to the diagonal line of the engagement holes 26 and 27 is obtained. The first engagement portion 30 can be inserted into the engagement holes 26 and 27 (when there is a space in which the holding holder 25 can be held upright with respect to the support 24, the holding holder 25 is flat. It is also possible to insert the first engagement portion 30 into the first engagement hole 26 in a posture extending in a diagonal direction of the first engagement hole 26 as viewed.

  When the squeezing action is released after the first engagement portion 30 is inserted into the engagement holes 26 and 27, both linear bodies 29 expand, and then the flange portion 30a of the first engagement portion 30 is engaged with the engagement holes 26 and 27. The first engagement portion 30 is held so as not to be able to be removed from the engagement holes 26 and 27 by being hooked on the inner peripheral edge.

  The maximum width dimension W1 ′ of the first engaging portion 30 in a state where the holding holder 25 is closed may be set to a dimension slightly smaller than the vertical width dimension L1 of the engagement holes 26 and 27. In this case, the first engagement portion 30 can be inserted into the engagement holes 26 and 27 while keeping the holding posture of the holding holder 25 in the same posture as the holding posture, without making the holding posture 25 oblique.

  The full width W2 ′ of the second engagement portion 31 in the state where the holding holder 25 is closed is larger than the vertical width dimension L1 and the diagonal dimension L2 of the engagement holes 26 and 27, but from FIG. As can be understood, the dimension W3 obtained by adding the thickness of the wire to the width dimension of the second engagement portion 31 in the linear body 29 on one side is slightly smaller than the vertical width dimension L1 of the engagement holes 26 and 27. It is set.

  For this reason, the second engaging portion 31 is inserted into the engaging holes 26 and 27 with the bent portion of one linear body 29 being shifted either up or down on the paper surface, and then the second linear portion 29 is bent. The part can be held in the engagement holes 26 and 27 so as not to be detached by adopting a procedure of inserting the part into the engagement holes 26 and 27 and then restoring the part by elastic force. Of course, the width W2 ′ in the narrowed state may be set to a value slightly smaller than the vertical width L1 of the engagement holes 26 and 27.

  The holding holder 25 is formed with a downwardly convex curved portion 32 with respect to the support 24, and the lower end of the curved portion 32 forms an abutting portion 32 a for the flexible flat cable 22. The contact portion 32a is set so as to be located at the left and right intermediate portion of the flexible flat cable 22 or in the vicinity thereof. The curved portion 32 can be rephrased as a curved downward convex portion.

  The curved portion 32 is located on the inner side of the both engaging portions 30 and 31, and therefore, both ends of the curved portion 32 are raised away from the support body 24. For this reason, the curved portion 32 includes the first portion. It continues to the engaging portion 30 via the first inclined portion 33, and continues to the second engaging portion 31 via the second inclined portion 34 (therefore, the holding holder 25 is located on the side surface. It has a form close to an M shape in view.) The first inclined portion 33 is formed with a U-shaped operation portion 35 that protrudes outward from each other. Therefore, there is a gap between the operation unit 35 and the support 24. The operation part 35 can also be formed in a state where it is raised upward.

(3) Summary The fixing work of the flexible flat cable 22 by the holding holder 25 is, for example, setting the flexible flat cable 22 at a predetermined position after fitting the first engagement portion 30 into the first engagement hole 26, Subsequently, the second engaging portion 31 is inserted into the first engaging hole 27 in the procedure. It is also possible to attach the holding holder 25 to the support 24 with the flexible flat cable 22 set in a predetermined position.

  When W1 ′ is larger than L1, as described above, the holding fixture 25 is inclined and the first engagement portion 30 is inserted into the first engagement hole 26, and then returned to the posture across the flexible flat cable 22. After that, the second engagement portion 31 is inserted into the second engagement hole 27. When the second engaging portion 31 is inserted into the second engaging hole 27, the first engaging portion 30 is once inserted deeply into the first engaging hole 26, or the entire holding holder 25 is bent and deformed. Good. The operation of inserting the second engagement portion 31 into the second engagement hole 27 may be performed by picking the connecting portion between the bending portion 32 and the second inclined portion 34.

  When the engaging portions 30 and 31 are fitted and engaged in the engaging holes 26 and 27, the linear body 29 is expanded by the elastic restoring force, so that the engaging portions 30 and 31 are engaged with the engaging holes. The flexible flat cable 22 is held at the lower end of the bending portion 32 by being held so as not to be able to be pulled out from 26 and 27 and urged by the elastic force so that the bending portion 32 approaches the support 24. It is held by the support 24 by 32a.

  When the flexible flat cable 22 is separated from the support 24 for maintenance or the like, the second engagement portion 31 is removed from the second engagement hole 27 and the first engagement portion 30 is fitted into the first engagement hole 26. It ’s better to leave it crowded. In this case, since the operation portion 45 serves as a stopper and the presser holding tool 25 is prevented from being deeply fitted into the first engagement hole 26, the resetting is easy.

  It is also possible to first fit the second engagement portion 31 into the second engagement hole 27 and then fit the first engagement portion 30 into the first engagement hole 26, and the second engagement portion It is also possible to remove only the first engagement portion 30 from the first engagement hole 26 while maintaining the state in which 31 is fitted and engaged in the second engagement hole 27. However, in this case, W1 ′ needs to be set to a value smaller than L1.

  Now, the flexible flat cable 22 has a structure in which a large number of harnesses are arranged in parallel and these are covered with a film, and if the film is damaged, it causes a short circuit. For example, when the support 24 (or another member) is moved or detached during maintenance, the flexible flat cable 22 and the support 24 may move relative to each other. In that case, since the flexible flat cable 22 is often twisted, if the flexible flat cable 22 is pressed and fixed over the entire width, the longitudinal side edge 22a of the flexible flat cable 22 is strongly attached to the support 24. There is a risk of being damaged.

  On the other hand, in the present embodiment, the flexible flat cable 22 is merely pressed and held in a state where the middle portion thereof is close to point contact at the curved portion 32, and the longitudinal side edge portion 22a is easily deformed. Since it is held, it is possible to suppress a situation in which the longitudinal side edge is rubbed with the support 24, and even if it is rubbed with the support 24, damage caused by damage is extremely small. For this reason, the durability of the flexible flat cable 22 can be improved.

(4). Others The present invention can be embodied in various ways other than the above embodiment. For example, the holding holder is not limited to a wire rod, and a resin molded product or a sheet metal processed product can be used. When a metal wire or a metal plate is used as a material, it is also possible to cover a soft protective material at least on a portion that contacts the flexible flat cable. Other forms may be employed for the first engaging portion and the second engaging portion. For example, the first engagement portion can be formed in a semicircular shape, a trapezoidal shape, or a single letter shape in plan view.

  As a means for pressing a portion of the flexible flat cable excluding both side edges, it is possible to form an inverted trapezoidal downward projecting portion instead of the curved portion as in the embodiment. In any case, it is also possible to form a plurality of abutting portions and hold the flexible flat cable at a jumping position along the width direction.

  The present invention is useful for holding and holding various flexible flat cables. Therefore, it can be used industrially.

DESCRIPTION OF SYMBOLS 3 Image process part 6 Image reader part 8Y-8K Image formation unit 14 Photoconductor drum 20 Control part 22 Flexible flat cable 24 Support body 25 Holding | holding holder 26,27 Engagement hole 28 Apex part 29 Linear body 30 1st engagement Part 31 Second engaging part 32 Curved part (downward projecting part)
32a Contact part 35 Operation part

Claims (6)

A flexible flat cable overlaid on a plate-like support is placed so as to cross it, and one end and the other end protruding from the flexible flat cable are inserted into engagement holes provided in the support. A holder made of an elastic body that holds and holds the flexible flat cable on the support,
An engagement portion that can be inserted into and removed from the engagement hole by elastically deforming one or both of the one end portion and the other end portion so that the interval in the same direction as the longitudinal direction of the flexible flat cable is narrowed. And
Holding holder for flexible flat cable. It consists of two linear bodies extending so as to cross the flexible flat cable, and the two linear bodies are connected together at the apex portion on one side across the flexible flat cable,
One end portion including the apex portion is a first engaging portion having an arrowhead shape in a plan view, and a second engaging portion is formed at the other end of the two linear bodies in opposite directions. The two engaging parts can be inserted into and removed from the engaging holes of the support body by narrowing so that the distance between the two linear bodies approaches.
A holding holder for a flexible flat cable according to claim 1. Manufactured by bending metal wire with springiness,
A holding holder for a flexible flat cable according to claim 1 or 2. One or more convex curved portions facing the flexible flat cable are formed in a portion overlapping the flexible flat cable in the plan view, and the lower end of the curved portion is a longitudinal side edge portion of the flexible flat cable. It consists of a contact part against the inner part,
A holding holder for a flexible flat cable according to any one of claims 1 to 3. Each of the two linear bodies is formed with an operation portion on which a person can apply a fingertip in a portion located in the vicinity of the first engagement portion and on the support body. It is possible to bring the two linear bodies closer to each other by pushing them closer together.
A holding holder for a flexible flat cable according to claim 4. It has a flexible flat cable and a support made of a plate material on which the flexible flat cable overlaps, and a holding holder that is placed on the flexible flat cable so as to cross the flexible flat cable, and sandwiches the flexible flat cable among the supports While the engagement holes are open on both sides, the holder has one end and the other end inserted into the engagement holes of the support, and one end and the other end of the holding holder. Either one or both of them and an engaging portion that can be inserted into and removed from the engaging hole by being compressed in the same direction as the longitudinal direction of the flexible flat cable.
Image forming apparatus.

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