JP2022038395A - Cable guide mechanism and image forming apparatus - Google Patents

Abstract

To prevent a cable member from being excessively bent in association with the movement of a predetermined moving member.SOLUTION: A cable guide mechanism has a moving member that is disposed movably with respect to a device main body and includes a guide member guiding a cable member, and a cover member that is disposed on the device main body and covers the moving member. At a position of the cover member corresponding to the guide member, a concave part storing the guide member while the moving member moves is formed extended in the direction of movement of the moving member. The cable member can be prevented from being excessively bent. Since a space for storing the cable member does not need to be expanded, an image forming apparatus can be reduced in size.SELECTED DRAWING: Figure 1

Description

The present invention relates to a cable guide mechanism and an image forming apparatus.

Conventionally, an image forming unit such as an image forming apparatus such as a printer, a copying machine, a facsimile apparatus, and a compound machine, for example, an electrophotographic printer is provided with an image forming unit, and the image forming unit is uniformly charged by a charging roller. The surface of the photoconductor drum is exposed by an LED head as an exposure device to form an electrostatic latent image, the electrostatic latent image is developed by toner to form a toner image, and the toner image is formed by a transfer roller. It is designed to be transferred to paper. Then, an image is formed and printing is performed by fixing the toner image on the paper in a fixing device as a fixing device arranged in the printer.

By the way, in the printer, a predetermined moving member is moved as a predetermined portion is operated by an operator (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2014-191290

In the conventional printer, for example, it is possible to prevent the flexible printing cable as a cable member connecting the control board and the moving member from being excessively curved as the predetermined moving member moves. There is a need to.

The present invention provides a cable guide mechanism and an image forming apparatus that can solve the problems of the conventional printer and prevent the cable member from being excessively curved with the movement of a predetermined moving member. The purpose is.

Therefore, in the cable guide mechanism of the present invention, a moving member provided on the main body of the device and having a guide member for guiding the cable member, and a cover member fixedly arranged on the main body of the device and covering the moving member. And have.

Then, a recess for accommodating the guide member while the moving member moves is formed at a position corresponding to the guide member in the cover member so as to extend in the moving direction of the moving member.

According to the present invention, in the cable guide mechanism, a moving member provided on the main body of the device and having a guide member for guiding the cable member, and a cover member fixedly arranged on the main body of the device and covering the moving member. And have.

Then, a recess for accommodating the guide member while the moving member moves is formed at a position corresponding to the guide member in the cover member so as to extend in the moving direction of the moving member.

In this case, since the guide member guides the cable member while being housed in the recess of the cover member while the moving member moves, it is possible to prevent the cable member from being excessively curved.

Further, since it is not necessary to increase the space for accommodating the cable member so that the cable member is not excessively curved, the image forming apparatus can be miniaturized.

It is sectional drawing of the cable guide mechanism in 1st Embodiment of this invention. It is a 1st perspective view of the printer in 1st Embodiment of this invention. 2 is a second perspective view of the printer according to the first embodiment of the present invention. It is a conceptual diagram of the printer in 1st Embodiment of this invention. It is a 1st perspective view which shows the state of the printer when the front cover is opened in 1st Embodiment of this invention. It is a perspective view which shows the state of the printer when the image forming unit is removed from the apparatus main body in 1st Embodiment of this invention. 2 is a second perspective view showing a state of the printer when the front cover is opened according to the first embodiment of the present invention. It is sectional drawing of the main part which shows the state of the printer when the front cover in 1st Embodiment of this invention is opened. It is sectional drawing of the main part which shows the state of the printer when the front cover is closed in 1st Embodiment of this invention. It is a perspective view which shows the state of the apparatus main body at the time of opening a front cover in 1st Embodiment of this invention. It is a main part perspective view which shows the state of the apparatus main body when the front cover is closed in 1st Embodiment of this invention. It is a 1st main part perspective view which shows the state of the apparatus main body at the time of opening a front cover in 1st Embodiment of this invention. It is a 1st main part perspective view which shows the state of the apparatus main body at the time of opening a front cover in 1st Embodiment of this invention. It is a perspective view which shows the state which the control board and the LED head in 1st Embodiment of this invention are connected with a flexible printing cable. It is a perspective view of the blindfolded sheet metal in 1st Embodiment of this invention. It is a perspective view of the head holder in the 1st Embodiment of this invention. It is a perspective view of the main part of the cable guide mechanism in the 1st Embodiment of this invention. It is a top view of the head holder and the blindfolded sheet metal in the 1st Embodiment of this invention. It is sectional drawing of the main part of the head holder and the blindfolded sheet metal in 1st Embodiment of this invention. It is a side view of the main part of the head holder and the blindfolded sheet metal in the 1st Embodiment of this invention. It is a figure for demonstrating the position of the head holder when the LED head in the 1st Embodiment of this invention is placed in an exposure position. It is a figure which shows the state of the flexible printing cable when the LED head in the 1st Embodiment of this invention is placed in an exposure position. It is a figure for demonstrating the position of the head holder when the LED head is placed in the retracted position in 1st Embodiment of this invention. It is a figure which shows the state of the flexible printing cable when the LED head is placed in the retracted position in the 1st Embodiment of this invention. It is sectional drawing of the cable guide mechanism in 2nd Embodiment of this invention. It is a perspective view of the head holder in the 2nd Embodiment of this invention. It is 1st main part perspective view of the cable guide mechanism in 2nd Embodiment of this invention. It is a 2nd main part perspective view of the cable guide mechanism in the 2nd Embodiment of this invention. It is a figure which shows the state of the flexible printing cable when the LED head in the 2nd Embodiment of this invention is placed in the exposure position. It is a figure which shows the state of the flexible printing cable when the LED head in the 2nd Embodiment of this invention is placed in the retracted position.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In this case, a printer as an image forming apparatus will be described.

FIG. 2 is a first perspective view of the printer according to the first embodiment of the present invention, FIG. 3 is a second perspective view of the printer according to the first embodiment of the present invention, and FIG. 4 is the first perspective view of the present invention. It is a conceptual diagram of the printer in the embodiment of. In the figure, the positive X-axis direction is the rear direction in the printer 10, the negative X-axis direction is the front direction in the printer 10, the positive Y-axis direction is the left direction in the printer 10, and the negative Y-axis direction is the printer. 10 is the right direction, the Z-axis positive direction is the upward direction in the printer 10, and the Z-axis negative direction is the downward direction in the printer 10.

In the figure, 10 is a printer, and Cs is a housing as a device exterior of the printer 10.

The housing Cs includes a front wall Wf, a back wall Wr, a side wall Ws1 on the left side when viewed from the front wall Wf side, a side wall Ws2 on the right side when viewed from the front wall Wf side, and a top wall Wt.

The front cover Pf is arranged to be openable and closable from the upper half Wfa of the front wall Wf to the front half Wtb of the top wall Wt, and by opening the front cover Pf, the operator accesses the device main body Bd and obtains an image. Paper P or the like as a medium in which jam is generated can be taken out from the forming unit (developer) 20, and maintenance and management of each part in the apparatus main body Bd can be performed. Further, a front panel 22f of the paper cassette 22 as a medium accommodating portion is arranged in the lower half of the front wall Wf so as to be openable and closable. In the present embodiment, cut paper is used as the paper P, but roll paper, fan folding paper, or the like can also be used.

An operation panel 65 is arranged at a portion of the top wall Wt adjacent to the front wall Wf and the side wall Ws2. The operation panel 65 includes a display unit 66 including an LED screen for displaying the status of the printer 10, and an operation unit 67 including switches, keys, and the like for the operator to input an instruction to the printer 10. When the operation panel 65 is formed by a touch panel, the operation panel 65 functions not only as a display unit but also as an operation unit. Further, a stacker sk as a medium loading portion is formed from the central portion of the top wall Wt to the back wall Wr, and a discharge port Hh1 for discharging the paper P on which the image is formed is formed so as to face the stacker sk. A discharge roller pair 26 as a discharge member is rotatably arranged in the discharge port Hh1.

The image forming unit 20 and the paper cassette 22 are detachably arranged in the housing Cs with respect to the apparatus main body Bd, and the LED head 21 as an exposure apparatus is arranged so as to be movable in the vertical direction. A transfer roller 24 as a transfer member is rotatably arranged below the image forming unit 20, and a fixing device 25 as a fixing device is arranged adjacent to the image forming unit 20.

The image forming unit 20 includes a main body 20a and a toner accommodating unit 17 as a developer accommodating unit for accommodating toner as a developer. A toner storage unit 18 as a developer storage unit is formed below the toner storage unit 17 in the main body 20a, and the toner supplied from the toner storage unit 17 is stored in the toner storage unit 18.

Further, the image forming unit 20 is rotatably arranged facing the photoconductor drum 11 as an image carrier and the photoconductor drum 11 and adheres toner to the photoconductor drum 11 to form a developer image. The developing roller 12 as a developing agent carrier forming a toner image, the supply roller 13 as a developing agent supplying member for supplying toner to the developing roller 12, and the photoconductor drum 11 are rotatably arranged so as to face each other. A charging roller 14 as a charging device that uniformly charges the surface of the photoconductor drum 11 is arranged by pressing the tip against the developing roller 12, and the toner supplied on the developing roller 12 is thinned to form a toner layer. It is scraped off by a developing blade 19 as a developer regulating member to be formed, a cleaning blade 15 as a cleaning member for scraping and removing residual toner as a transfer residual developer on the photoconductor drum 11, and the cleaning blade 15. The waste toner transport path 16 as a waste developer transport path for transporting the removed residual toner as waste toner which is a waste developer is provided.

The LED head 21 is arranged above the main body 20a so as to face the photoconductor drum 11 and exposes the photoconductor drum 11 charged by the charging roller 14 according to the image data to expose the photoconductor drum 11 to the photoconductor drum 11. An electrostatic latent image as a latent image is formed on the surface. The developing roller 12 forms a toner image on the photoconductor drum 11 by adhering the toner to the electrostatic latent image.

The transfer roller 24 is arranged below the main body 20a so as to face the photoconductor drum 11 and transfers the toner image on the photoconductor drum 11 to the paper P supplied from the paper cassette 22.

The fuser 25 includes a heating roller R1 as a first fixing member and a pressure roller R2 as a second fixing member, and a heating element such as a halogen lamp (not shown) is arranged in the heating roller R1. To. In the fuser 25, the toner image transferred to the paper P is heated by the heating roller R1 and pressed by the pressure roller R2 to be fixed on the paper P.

Further, in FIG. 4, 27 is a sealing member formed of a film or the like and the tip of which is pressed against the developing roller 12 to be arranged. In the sealing member 27, the toner in the toner storage portion 18 is outside the main body portion 20a. Prevents leakage to.

The photoconductor drum 11, the developing roller 12, the supply roller 13, the charging roller 14, and the transfer roller 24 are each rotated in the direction of the arrow.

The paper P in the paper cassette 22 is fed to the medium transport path Rt1 in the direction of arrow A by the feed roller 23, is carried by the transport roller m1 as a transport member, and is transported between the photoconductor drum 11 and the transfer roller 24 (nip). The toner image is transferred in the direction of arrow B, and the toner image is fixed in the fuser 25 to form an image. Subsequently, the paper P is conveyed in the direction of arrow C, is discharged in the direction of arrow D (outside the device main body Bd) through the discharge port Hh1 by the discharge roller pair 26, and is loaded on the stacker sk.

By the way, in the printer 10, a predetermined portion by an operator, a predetermined moving member in the present embodiment as the front cover Pf is operated, and a third cooperation member in the present embodiment. The head holder 45 (FIG. 6), which will be described later, is moved, and the LED head 21 is moved as the head holder 45 is moved.

FIG. 5 is a first perspective view showing a state of the printer when the front cover is opened according to the first embodiment of the present invention, and FIG. 6 is an image forming unit from the main body of the apparatus according to the first embodiment of the present invention. 7 is a perspective view showing the state of the printer when the front cover is opened, FIG. 7 is a second perspective view showing the state of the printer when the front cover according to the first embodiment of the present invention is opened, and FIG. 8 is a second perspective view showing the state of the printer when the front cover is opened. A cross-sectional view of a main part showing the state of the printer when the front cover is opened in the first embodiment, and FIG. 9 is a key showing the state of the printer when the front cover is closed in the first embodiment of the present invention. Sectional sectional view, FIG. 10 is a perspective view showing a state of the apparatus main body when the front cover according to the first embodiment of the present invention is opened, and FIG. 11 is a perspective view showing a state of the apparatus main body when the front cover according to the first embodiment of the present invention is closed. FIG. 12 is a perspective view of a main part showing the state of the main body of the apparatus at the time, and FIG. 12 is a perspective view of the first main part showing the state of the main body of the apparatus when the front cover is opened according to the first embodiment of the present invention. Is a second perspective view showing a state of the main body of the apparatus when the front cover is opened according to the first embodiment of the present invention. In FIGS. 5 to 9, the X-axis positive direction is the rear direction in the printer 10, the X-axis negative direction is the front direction in the printer 10, the Y-axis positive direction is the left direction in the printer 10, and the Y-axis negative direction. The direction is the right direction in the printer 10, the Z-axis positive direction is the upward direction in the printer 10, and the Z-axis negative direction is the downward direction in the printer 10.

In the figure, 10 is a printer, Wr is a front wall, Wt is a back wall, Ws1 and Ws2 are side walls, Wt is a top wall, Pf is a front cover, Wfa is the upper half of the front wall Wf, and Wtb is the top wall Wt. In the first half of the device, Bd is the device body, 21 is the LED head, 26 is the discharge roller pair, and 30 is fixedly arranged to the device body Bd to cover the head holder 45 and the image forming unit 20 to the device body Bd. The blind sheet metal 31 as a cover member and a protective member for protecting the LED head 21 held by the head holder 45 when attached / detached is a predetermined portion of the front cover Pf, in the present embodiment. The protrusions 33 as engaging portions formed so as to project from the left and right side edges of the upper half portion Wfa are arranged on the side walls Ws1 and Ws2 of the device main body Bd, and accompany the operation of the front cover Pf by the operator. It is a cooperation mechanism that moves the LED head 21.

By the way, for example, when the operator accidentally touches the LED head 21 or gives an impact to the LED head 21 when the image forming unit 20 is attached to or detached from the device main body Bd, the LED head 21 is damaged.

Therefore, in the present embodiment, when the operator opens the front cover Pf, the head holder 45 is moved upward by each of the cooperation mechanisms 33, and the LED head 21 is moved and placed behind the blindfold sheet metal 30. , It is designed to be held by the blindfold sheet metal 30.

Therefore, each cooperation mechanism 33 is a cam member 35 as a first cooperation member, which is movably arranged in the front-rear direction (X-axis direction) as the front cover Pf is opened and closed by the operator. A lever member 36 as a second coordinating member that is swingably arranged with respect to the device main body Bd as the device body Bd moves, and a lever that is extended and arranged between the side walls Ws1 and Ws2 of the device main body Bd. The head holder 45 is provided so as to be movable in the vertical direction (Z-axis direction) as the member 36 swings.

Each of the cam members 35 includes a cam 41 having a rectangular shape, and a contact surface s1 to be brought into contact with the protrusion 31 is formed at the front end of each cam 41, and the contact surface s1 is formed from the front end to the rear end of each cam 41. A long groove dt1 as an engaging member is formed, and a long hole h1 as a guide member extending in the vertical direction is formed on the rear end side of the long groove dt1 of each cam 41. Then, a pair of protrusions as engaged members are projected toward each cam 41 at positions corresponding to the long grooves dt1 on the inner peripheral surfaces of the side walls Ws1 and Ws2 at predetermined intervals in the front-rear direction. ps1 and ps2 are formed. As the protrusions ps1 and ps2 are moved along the long groove dt1, each cam member 35 is moved in the front-rear direction. The cam member 35 is provided with a spring (not shown) as an urging member that urges the cam 41 forward and brings the cam 41 into constant contact with the protrusion 31.

Each lever member 36 includes a lever 43 having a "dogleg" shape, and a protrusion ps3 as a locking member moved along the elongated hole h1 is provided on each cam 41 at the front end of the lever 43. The swing shaft sh1 is formed so as to project toward the side wall Ws1 and Ws2 at the center of each lever 43, and the swing shaft sh1 is formed at the rear end of each lever 43 with respect to the swing shaft sh1. The elongated hole h2 as a guide member is formed so as to extend in the radial direction. When each of the cam members 35 is moved in the front-rear direction, the protrusion ps3 is moved along the elongated hole h1, and each lever member 36 is swung with respect to the device main body Bd.

The head holder 45 is arranged so as to extend in the left-right direction (Y-axis direction), and holds the LED head 21 at the lower end. Further, a pair of holder bosses bs1 and bs2 as locking members are formed at both ends of the head holder 45 so as to project toward the side walls Ws1 and Ws2 at predetermined intervals in the vertical direction. In the form, the lower holder boss bs1 is moved along the elongated hole h2. When the lever member 36 was swung with respect to the device main body Bd, each holder boss bs1 was moved along the elongated hole h2, and the head holder 45 was formed with the holder bosses bs1 and bs2 on the side walls Ws1 and Ws2. It is moved in the vertical direction while being moved along the guide groove dt2.

Next, the operation of the cooperation mechanism 33 will be described.

As the front cover Pf is closed by the operator, each protrusion 31 moves the cam member 35 rearward against the urging force of the spring. At this time, the lever member 36 is rotated in the counterclockwise direction in FIGS. 8 and 9, the head holder 45 is moved downward, and the LED head 21 is placed at the exposure position shown in FIG.

Further, as the front cover Pf is opened by the operator, each protrusion 31 moves the cam member 35 forward by the urging force of the spring, and at this time, the lever member 36 moves in the clockwise direction in FIGS. 8 and 9. The head holder 45 is moved upward, and the LED head 21 is placed at the exposure position shown in FIG. As shown in FIG. 11, a blindfold sheet metal 30 is arranged in front of the head holder 45 so as to extend in the vertical direction and the horizontal direction. Therefore, for example, the operator installs the image forming unit 20 in the apparatus main body. The image forming unit 20 does not come into contact with the LED head 21 when it is attached to and detached from the Bd, and the LED head 21 can be protected.

By the way, in the printer 10, when print data is sent from a host computer (not shown) as a higher-level device, the print data is edited by a control unit (not shown) to generate image data, and the image data is sent to the LED head 21. The LED head 21 is driven.

Therefore, a control board 51 (FIG. 14), which will be described later, constituting the control unit is disposed in the device main body Bd of the printer 10, and the control board 51 and the LED head 21 are described later as cable members. It is connected via a flexible printed cable (FFC) 53.

FIG. 14 is a perspective view showing a state in which the control board and the LED head according to the first embodiment of the present invention are connected via a flexible printing cable.

In the figure, Ws2 is a side wall, Bd is a device main body, 21 is an LED head, 45 is a head holder, 51 is a control board, and one end of 53 is fixed to the head holder 45 and connected to the LED head 21, and the other end is a device. The flexible printing cable 55, which is fixed to the main body Bd and connected to the control board 51 and connects the LED head 21 and the control board 51, grounds the LED head 21 to the device main body Bd and blindfolds the head holder 45. It is a head grounding spring as a grounding member for generating a predetermined urging force between the sheet metal 30 (FIG. 13) and between the head holder 45 and the LED head 21, and as a urging member. In the figure, the LED head 21 is placed at the exposure position.

By the way, when the operator opens the front cover Pf (FIG. 2), the LED head 21 moves as the head holder 45 is moved upward and is placed in the retracted position. At this time, the control board 51 is placed. Since it is fixed to the device main body Bd and its position does not change, it is necessary to prevent the flexible printing cable 53 from being excessively curved.

Further, if the space for accommodating the flexible printing cable 53 is widened so that the flexible printing cable 53 is not excessively curved, the size of the printer 10 becomes large.

Therefore, in the present embodiment, the cable guide mechanism is formed by the head holder 45 and the blind sheet metal 30, the cable guide portion Gd1 is arranged at a predetermined position of the head holder 45, and the LED head 21 is placed in the retracted position. The flexible printing cable 53 is guided by the cable guide portion Gd1 at the time of squeezing, and the flexible printing cable 53 is prevented from being excessively curved.

FIG. 1 is a sectional view of a cable guide mechanism according to the first embodiment of the present invention, FIG. 15 is a perspective view of a blindfold sheet metal according to the first embodiment of the present invention, and FIG. 16 is a first embodiment of the present invention. A perspective view of the head holder according to the first embodiment, FIG. 17 is a perspective view of a main part of the cable guide mechanism according to the first embodiment of the present invention, and FIG. 18 is a plan view of the head holder and the blindfold sheet according to the first embodiment of the present invention. FIG. 19 is a sectional view of a main part of the head holder and the blindfold sheet according to the first embodiment of the present invention, and FIG. 20 is a side view of the main part of the head holder and the blindfold sheet according to the first embodiment of the present invention. 21 is a diagram for explaining the position of the head holder when the LED head in the first embodiment of the present invention is placed in the exposed position, and FIG. 22 is a diagram for explaining the position of the head holder when the LED head is placed in the exposed position, and FIG. 22 is a diagram showing the LED in the first embodiment of the present invention. FIG. 23 shows a state of the flexible printing cable when the head is placed in the exposed position, and FIG. 23 shows the head holder when the LED head according to the first embodiment of the present invention is placed in the retracted position. FIG. 24 is a diagram for explaining the position, showing the state of the flexible printing cable when the LED head in the first embodiment of the present invention is placed in the retracted position. In the figure, the positive X-axis direction is the rear direction in the printer 10, the negative X-axis direction is the front direction in the printer 10, the positive Y-axis direction is the left direction in the printer 10, and the negative Y-axis direction is the printer. 10 is the right direction, the Z-axis positive direction is the upward direction in the printer 10, and the Z-axis negative direction is the downward direction in the printer 10.

In the figure, 20 is an image forming unit, Gd1 is a cable guide portion, and 30 is a blindfold sheet metal. The blindfold sheet metal 30 extends from the front to the rear at the main body portion 30a and the upper ends of the main body portion 30a. The formed mounting portion 30b is provided and mounted on the top wall Wt via the mounting portion 30b.

Further, reference numeral 45 denotes a head holder, and the head holder 45 is hung from the main body portion 75 at both ends of the main body portion 75 formed so as to extend in the left-right direction, that is, at each end portion on the side wall Ws1 and Ws2 sides. The holding portions 45a and 45b are provided, holder bosses bs1 and bs2 are formed at both ends of the holding portions 45a and 45b, and the LED head 21 is held in the region Ar1 between the holding portions 45a and 45b.

The cable guide portion Gd1 is disposed at a predetermined location in the longitudinal direction of the head holder 45, and in the present embodiment, at a location adjacent to the holding portion 45b, and the control board 51 (FIG. 14) and the LED head 21 are arranged. The flexible printing cable 53 that connects to and is routed via the cable guide portion Gd1.

Therefore, a rectangular through hole h3 that penetrates the head holder 45 in the vertical direction is formed at a position adjacent to the holding portion 45b in the head holder 45, and the flexible printing cable faces the through hole h3. The first and second regulating members Rs1 and Rs2 that regulate the movement of the 53 are arranged so as to face each other.

The first restricting member Rs1 is a flat portion 61 formed by projecting from the front end of the through port h3 toward the center and extending in the left-right direction, and the front end of the through port h3 from the rear end of the flat portion 61. It is provided with an inclined portion 62 formed by being raised at a predetermined angle and inclined with respect to the moving direction of the head holder 45, and as a first regulating portion between the flat portion 61 and the inclined portion 62. Edge eg1 is formed.

Further, at the front end of the inclined portion 62 of the first restricting member Rs1, a holder protrusion 63 as a guide member is formed so as to rise from the central portion in the left-right direction at a predetermined angle and project forward from the head holder 45. The holder protrusion 63 is supported by the first regulating member Rs1.

Then, the holder projection 63 is formed with a tapered surface St as a guide surface facing the through port h3 and inclined with respect to the moving direction of the head holder 45, and the tapered surface St forms the head holder 45. The movement of the flexible printing cable 53 as it moves in the vertical direction is restricted, and the flexible printing cable 53 is guided.

Further, the blindfold sheet metal 30 extends in the moving direction (vertical direction) of the head holder 45 at the end portion on the side wall Ws1 side of the main body portion 30a, that is, at a position corresponding to the holder protrusion 63, and protrudes forward. The groove wx as a concave portion is formed. A part of the tapered surface St of the holder protrusion 63 is accommodated in the space Sp formed by the groove portion wx and the abutting surface Sb described later while the head holder 45 moves, so that the head holder 45 moves. Along with this, it is moved along the groove wx in the space Sp.

The second restricting member Rs2 includes a facing portion 64 formed at the rear end of the through port h3 so as to face the tapered surface St of the holder protrusion 63. The facing portion 64 is formed so as to extend left and right by a predetermined length and hang downward by a predetermined length in a direction orthogonal to the moving direction of the head holder 45, and is formed on the lower edge. The edge eg2 as the second regulating part is formed.

The flexible printing cable 53 is curved while its movement is restricted by the first and second regulating members Rs1 and Rs2 while the head holder 45 is moved in the vertical direction.

Further, the abutting surface Sb is formed in the portion of the main body portion 30a of the blindfold sheet metal 30 facing the through port h3. In this case, since a part of the tapered surface St of the holder projection 63 housed in the space Sp is projected forward from the main body portion 30a, the flexible printing cable 53 is forcibly forced by the head holder 45. It is guided by the holder protrusion 63 without being deformed. The flexible printing cable 53 is guided by the holder projection 63 and tries to project forward from the main body portion 30a, but hits the abutting surface Sb and is prevented from projecting forward. Therefore, the flexible printing cable 53 is guided in the direction away from the abutting surface Sb by the holder protrusion 63 as the head holder 45 is moved in the vertical direction, and is behind the main body portion 30a in FIG. The control board 51 (FIG. 14) and the LED head 21 are connected in a state of being housed in the area Ar2.

Next, the state of the flexible printing cable 53 when the LED head 21 is moved in the vertical direction and placed in the exposed position and when placed in the retracted position will be described.

As mentioned above, when the operator closes the front cover Pf (FIG. 2), the LED head 21 is placed in the exposed position as shown in FIG. 21, which causes the flexible print cable 53 to be in FIG. 22. As shown in, at the lower end, it is connected to the connector Cn of the LED head 21, extends upward in the through hole h3, is regulated by the edge eg1 of the first regulating member Rs1, and is slightly curved rearward. It is slightly bent forward above the restricting member Rs2 and the head holder 45, and is bent 90 [°] in the vicinity of the mounting portion 30b of the blindfold sheet metal 30 to be connected to the control board 51.

Then, when the operator opens the front cover Pf, the LED head 21 is moved upward and placed in the retracted position as shown in FIG. 23, whereby the flexible printing cable 53 is moved upward in FIG. 24. As shown in, at the lower end, it is connected to the connector Cn of the LED head 21, extends upward, and is curved rearward away from the edge eg1 of the first regulatory member Rs1 in the through hole h3, above which the first The tapered surface of the holder protrusion 63 in the front-rear direction, which is regulated by the edge eg2 of the regulating member Rs2 of 2 and is curved forward, passes between the tapered surface St of the second regulating member Rs2 and the first regulating member Rs1. It is routed toward the side where St is formed, that is, the side opposite to the taber surface St side, is curved, and is connected to the control board 51.

As described above, in the present embodiment, the holder protrusion 63 guides the flexible printing cable 53 in a state where a part of the holder protrusion 63 is housed in the groove wx of the blindfold sheet metal 30 as the head holder 45 moves. Therefore, the flexible printing cable 53 is not excessively curved.

Therefore, the flexible printing cable 53 is not damaged, and it is possible to prevent the durability of the printer 10 from being lowered.

Further, since it is not necessary to increase the space for accommodating the flexible printing cable 53 so that the flexible printing cable 53 is not excessively curved, the printer 10 can be miniaturized.

Next, a second embodiment of the present invention will be described in which the first and second guiding members are arranged below the first and second regulating members Rs1 and Rs2. The same reference numerals are given to those having the same structure as that of the first embodiment, and the effects of the same embodiment are used for the effects of the invention due to having the same structure.

25 is a sectional view of the cable guide mechanism according to the second embodiment of the present invention, FIG. 26 is a perspective view of the head holder according to the second embodiment of the present invention, and FIG. 27 is a second embodiment of the present invention. A first perspective perspective view of the cable guide mechanism according to the embodiment, FIG. 28 is a second perspective view of the cable guide mechanism according to the second embodiment of the present invention, and FIG. 29 is a second embodiment of the present invention. FIG. 30 shows a state of the flexible printing cable when the LED head in the embodiment is placed in the exposed position, FIG. 30 shows the state when the LED head in the second embodiment of the present invention is placed in the retracted position. It is a figure which shows the state of a flexible printing cable. In the figure, the positive X-axis direction is the rear direction in the printer 10 as an image forming apparatus, the negative X-axis direction is the front direction in the printer 10, and the positive Y-axis direction is the left direction in the printer 10. The negative axis direction is the right direction in the printer 10, the positive direction in the Z axis is the upward direction in the printer 10, and the negative direction in the Z axis is the downward direction in the printer 10.

In the figure, 45 is a head holder as a moving member and a third cooperation member, h3 is a through hole formed in a position adjacent to a holding portion 45b in the head holder 45, and 53 is a cable member. The flexible printing cable, Gd1, is a cable guide portion arranged at a predetermined position on the head holder 45. The cable guide portion Gd1 is formed with first and second restricting members Rs1 and Rs2 that regulate the movement of the flexible printing cable 53 so as to face the through-hole h3 and face each other. Below the regulating members Rs1 and Rs2 of 2, the first and second guiding members Ld1 and Ld2 for guiding the flexible printing cable 53 between the first and second regulating members Rs1 and Rs2 penetrate. It is arranged so as to face the mouth h3 and face each other.

Further, a holder protrusion 63 as a guide member is formed by rising at a predetermined angle from the central portion in the left-right direction of the front end of the inclined portion 62 of the first regulating member Rs1.

The first guide member Ld1 includes an outer rib 71 formed so as to project left and right from the front end of the through hole h3 toward the center directly above the LED head 21 as an exposure device, and the outer rib 71 of the outer rib 71. An edge eg3 as a first guiding portion is formed at the rear end.

The second guide member Ld2 is formed so as to project laterally from a position slightly forward of the rear end of the through port h3 toward the center slightly above the first guide member Ld1. A rib 72 is provided, and an edge eg4 as a second guiding portion is formed at the front end of the inner rib 72.

Next, the state of the flexible printing cable 53 when the LED head 21 is moved in the vertical direction and placed in the exposed position and when placed in the retracted position will be described.

Similar to the first embodiment, when the operator closes the front cover Pf, the LED head 21 is placed in the exposed position, whereby the flexible print cable 53 is at the lower end, as shown in FIG. In, it is connected to the connector Cn of the LED head 21 and extends upward through between the edge eg3 of the first guide member Ld1 and the edge eg4 of the second guide member Ld2 in the through hole h3, and extends upward to the first regulation member. It is regulated by the edge eg1 as the first regulating part of the Rs1 and is slightly curved backward, and above the head holder 45, is slightly curved forward, and is a blindfold as a cover member and as a protective member. It is curved by 90 [°] in the vicinity of the mounting portion 30b of the sheet metal 30 and connected to the control board 51 constituting the control portion.

Then, when the operator opens the front cover Pf, the LED head 21 is moved upward and placed in the retracted position, whereby the flexible printing cable 53 is placed at the lower end as shown in FIG. It is connected to the connector Cn of the LED head 21, passes between the edge eg3 of the first guide member Ld1 and the edge eg4 of the second guide member Ld2 in the through hole h3, extends upward, and extends upward, and is the first regulation member Rs1. It is curved backward away from the edge eg1 of the Passing between the tapered surface St of the restricting member Rs1 of 1, and routed and curved toward the side where the tapered surface St of the holder protrusion 63 is formed in the front-rear direction, that is, the opposite side of the tapered surface St. It is connected to the control board 51.

As described above, in the present embodiment, the first and second guide members Ld1 and Ld2 disposed below the first and second restricting members Rs1 and Rs2 use the flexible printing cable 53 as the first flexible printing cable 53. , Since it is guided between the second regulating members Rs1 and Rs2, the flexible printing cable 53 is not excessively curved.

In each of the above-described embodiments, the head holder 45 is moved in the vertical direction, but the head holder 45 can be moved, rotated, or swung in a predetermined direction.

Further, although the printer 10 is described in each of the above embodiments, the present invention can be applied to an image forming apparatus such as a copying machine, a facsimile machine, and a multifunction device.

It should be noted that the present invention is not limited to each of the above-described embodiments, and various modifications can be made based on the gist of the present invention, and these are not excluded from the scope of the present invention.

30 Blindfold sheet metal 45 Head holder 53 Flexible printing cable 63 Holder protrusion Bd Device body wx Groove

Claims (12)

(A) A moving member that is movably arranged with respect to the main body of the device and has a guide member that guides the cable member.
(B) It has a cover member which is arranged in the main body of the apparatus and covers the moving member, and also has a cover member.
(C) A cable guide characterized in that a recess for accommodating the guide member while the moving member moves is formed at a position corresponding to the guide member in the cover member so as to extend in the moving direction of the moving member. mechanism. The cable guide mechanism according to claim 1, wherein the guide member is moved in a space formed by the recess as the moving member moves. The cable guide mechanism according to claim 1 or 2, wherein the guide member is formed so as to be inclined with respect to the moving direction of the moving member to regulate the movement of the cable member and to form a guide surface for guiding the cable member. .. The cable guide mechanism according to any one of claims 1 to 3, wherein an abutting surface on which the cable member abuts is formed on the cover member. The cable guide mechanism according to claim 4, wherein the guide member is formed so as to project from the abutting surface toward the concave portion. The cable guide mechanism according to claim 4 or 5, wherein the guide member guides the cable member in a direction away from the abutting surface as the moving member moves. The cable guide mechanism according to claim 3, wherein the restricting member is arranged so as to face the guide surface in a direction orthogonal to the moving direction of the moving member. One end of the cable member is fixed to the moving member, passes between the guide surface and the restricting member, and faces the side opposite to the side on which the guide surface is formed in a direction orthogonal to the moving direction of the moving member. The cable guide mechanism according to claim 7, wherein the cable guide mechanism is routed and the other end is fixed to the main body of the apparatus. The cable guide mechanism according to claim 7, wherein the moving member includes a guiding member for guiding the cable member below the regulating member. (A) The moving member is a head holder that holds an exposure apparatus.
(B) The cable guide mechanism according to any one of claims 1 to 9, wherein the cable member connects a control unit and an exposure device. An image forming apparatus having the cable guide mechanism according to any one of claims 1 to 10. The image forming apparatus according to claim 11, wherein the moving member is moved as the front cover of the image forming apparatus is opened and closed.

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