JP2020190629A - Optical scanner and image forming apparatus - Google Patents

Abstract

To prevent loosening and breaking of a bundle wire arranged between the inside and the outside of a housing, while maintaining dust-proof performance in the housing.SOLUTION: An optical scanner comprises: a bundle wire 43 that is connected to a deflector unit at one end, routed from the inside of a housing 101 along a Y-axis direction, extended to surround the outside of the housing 101 through a side wall 101B, and connected to an external substrate at the other end; a bundle wire outlet 46 that is provided in the side wall 101B to guide the bundle wire 43 from the inside to the outside of the housing 101; a routing area that is provided along the outside of the side wall 101B at a position lower than the bundle wire outlet 46 in the vertical direction, where the bundle wire 43 is routed; and a hooking part 44 that hooks the bundle wire 43 to guide the bundle wire 43 from the bundle wire outlet 46 to the routing area. The hooking part 44 has a first regulation part 44A that regulates a movement of the bundle wire 43 in an X-axis direction, and a second regulation part 44B that regulates a movement of the bundle wire 43 in the Y-axis direction.SELECTED DRAWING: Figure 5

Description

The present invention relates to an optical scanning device and an image forming device, and particularly includes a mechanism for preventing wire biting and loosening of the bundled wire when the bundled wire is extended from a deflector to a substrate outside the housing with a simple configuration. Regarding an optical scanning device.

The exposure apparatus in the image forming apparatus needs to have a deflector and a deflection substrate in the housing, and to connect the bundled wires emitted from the substrate to the substrate outside the housing. At this time, it is necessary to have a configuration in which the bundled wire is not broken and the housing containing the optical component is kept airtight. In the conventional exposure apparatus, a hole is provided in the housing and the bundled wire is passed through the hole to prevent the bundled wire from being loosened and being bitten by the housing and the cover member of the housing. (See, for example, Patent Document 1). This makes it possible to connect the substrate outside the housing to the polarizing device.

Japanese Unexamined Patent Publication No. 2014-163977

However, in the conventional example, although it is possible to prevent wire biting, disconnection, and loosening (looseness) of the bundled wire, since the housing is provided with a hole, the sealing performance and dustproof performance of the exposure apparatus may be deteriorated. .. Even if the holes are closed with dustproof members, the number of parts will increase. Further, as another means, there is a means of crushing the bundled wire with a dustproof member for sealing between the cover of the exposure apparatus and the housing to bring out the bundled wire to the outside of the housing. However, even with this means, there is a possibility that the bundled wire may be loosened (loose), twisted, or bitten or broken before the bundled wire is connected to the substrate outside the housing.

The present invention has been made under such a situation, and it is intended to prevent loosening or disconnection of the bundled wire wired between the inside and the outside of the housing while maintaining the dustproof performance inside the housing. The purpose.

In order to solve the above-mentioned problems, the present invention includes the following configurations.

(1) A light source that emits a light beam, a first substrate on which the light source is mounted, a rotating polymorphic mirror that deflects a light beam emitted from the light source, and a driving means for driving the rotating multifaceted mirror. A deflecting means, a second substrate on which the deflecting means is mounted, an optical member for guiding a light beam deflected by the rotating multifaceted mirror to an object to be scanned, and a bottom surface on which the second substrate is installed. An optical scanning device including a side wall erected from the bottom surface and a housing in which the first substrate is attached to the outside of one side wall of the side wall, and one end thereof. It is connected to the second substrate, crawls from the inside of the housing along the longitudinal direction of the optical member, and is routed around the outside of the housing through a side wall facing the one side wall. A bundled wire whose end is connected to the first substrate, a notch provided on a side wall facing the one side wall for guiding the bundled wire from the inside to the outside of the housing, and the cutout. A guide portion that is provided along the outside of the side wall at a position lower than the notch in the vertical direction and crawls the bundle wire, and the bundle wire for guiding the bundle wire from the notch portion to the guide portion. The hooking portion includes a hooking portion for hooking, and the hooking portion includes a first regulating portion that regulates the movement of the bundle wire in the optical axis direction and a second regulation portion that regulates the movement of the bundle wire in the longitudinal direction. An optical scanning device comprising a unit and a unit.

(2) The photoconductor, the optical scanning device according to (1), which forms an electrostatic latent image on the photoconductor, and the electrostatic latent image formed on the photoconductor by the optical scanning device with toner. An image forming apparatus comprising: a developing means for developing and forming a toner image, and a transfer means for transferring the toner image to a recording material.

According to the present invention, it is possible to prevent loosening or disconnection of the bundled wire wired between the inside and the outside of the housing while maintaining the dustproof performance inside the housing.

Schematic of the image forming apparatus of Examples 1 and 2. Schematic of the optical scanning apparatus of Examples 1 and 2. Cross-sectional view of the optical scanning apparatus of Examples 1 and 2. Schematic diagram of the bundled wire path of Example 1 Schematic diagram of the vicinity of the hooked portion of the first embodiment Schematic diagram showing the height configuration in the vicinity of the hook portion of the first embodiment Schematic diagram of the vicinity of the hooked portion of the second embodiment Schematic diagram showing the installation range of the hook portion of the second embodiment

Hereinafter, preferred embodiments of the present invention will be described in detail exemplarily with reference to the drawings. The direction in which the laser beam is scanned and the rotation axis direction of the photosensitive drum or the longitudinal direction of the optical member is defined as the main scanning direction or the Y-axis direction. Further, the rotation direction of the photosensitive drum is defined as the sub-scanning direction, which is a direction substantially orthogonal to the main scanning direction. Further, the optical axis direction of the optical member is the X-axis direction, and the direction orthogonal to the X-axis direction and the Y-axis direction is the Z-axis direction.

[Configuration of image forming apparatus]
The configuration of the image forming apparatus of the first embodiment will be described. FIG. 1 is a schematic configuration diagram showing the overall configuration of the tandem type color laser beam printer of the first embodiment. This laser beam printer (hereinafter, simply referred to as a printer) has four image-forming engines 10Y and 10M that form toner images for each of the colors yellow (Y), magenta (M), cyan (C), and black (Bk). It is provided with 10C and 10Bk (shown by a long and short dash line). The printer also includes an intermediate transfer belt 20 on which the toner image is transferred from the image forming engines 10Y, 10M, 10C, and 10Bk. Then, the toner image multiplex-transferred on the intermediate transfer belt 20 is transferred to a recording material (also referred to as a sheet) P which is a recording medium to form a full-color image. Hereinafter, the symbols Y, M, C, and Bk representing each color will be omitted unless necessary.

The intermediate transfer belt 20 is formed in an endless shape and is hung around a pair of belt transfer rollers 21 and 22, so that the toner image formed by each image forming engine 10 is transferred while rotating in the direction of arrow H. It is configured in. Further, a secondary transfer roller 60 is arranged at a position facing one of the belt transport rollers 21 with the intermediate transfer belt 20 in between. The sheet P is inserted between the secondary transfer roller 60 and the intermediate transfer belt 20 which are in pressure contact with each other, and the toner image is transferred from the intermediate transfer belt 20. The four image-forming engines 10Y, 10M, 10C, and 10Bk described above are arranged in parallel under the intermediate transfer belt 20, and a toner image formed according to the image information of each color is formed on the intermediate transfer belt 20. It is designed to be transferred to. These four image-forming engines 10 are the image-forming engine 10Y for yellow, the image-forming engine 10M for magenta, and the image-forming engine 10C for cyan along the rotation direction (arrow H direction) of the intermediate transfer belt 20. And the image-forming engine for black 10Bk are arranged in this order.

Further, below each image forming engine 10, an optical scanning device 40 that exposes a photosensitive drum 50, which is a photosensitive member (object to be scanned) provided in each image forming engine 10, according to image information is arranged. There is. The optical scanning device 40 is shared by all image forming engines 10Y, 10M, 10C, and 10Bk, and includes four semiconductor lasers (not shown) that emit light beams modulated according to the image information of each color. There is. Then, the optical scanning device 40 exposes the photosensitive drum 50 of each image forming engine 10 by emitting a light beam from the semiconductor laser according to the image information of each color. In FIG. 1, detailed illustration and description of the optical scanning apparatus 40 will be omitted, and FIGS. 2 and 3 will be used in detail.

Further, each image forming engine 10 includes a photosensitive drum 50 and a charging roller 12 that charges the photosensitive drum 50 with a uniform potential. Further, each image processing engine 10 is a developing device that develops an electrostatic latent image formed on the photosensitive drum 50 (on the photoconductor) by exposure of a light beam from the optical scanning device 40 to form a toner image. It is equipped with 13. The developer 13 forms a toner image corresponding to the image information of each color on the photosensitive drum 50. A primary transfer roller 15 is arranged at a position facing the photosensitive drum 50 of each image forming engine 10 so as to sandwich the intermediate transfer belt 20. When a predetermined transfer voltage is applied to the primary transfer roller 15, the toner image on the photosensitive drum 50 is transferred to the intermediate transfer belt 20.

On the other hand, the sheet P is supplied from the paper feed cassette 2 housed in the lower part of the printer housing 1 to the secondary transfer position where the intermediate transfer belt 20 and the secondary transfer roller 60 abut. A pickup roller 24 for pulling out the sheet P housed in the paper feed cassette 2 and a paper feed roller 25 are arranged side by side on the upper part of the paper feed cassette 2. Further, a retard roller 26 for preventing double feeding of the sheet P is arranged at a position facing the paper feed roller 25. The transport path 27 for the sheet P inside the printer is provided substantially vertically along the right side surface in the drawing of the printer housing 1. The sheet P pulled out from the paper feed cassette 2 located at the bottom of the printer housing 1 rises in the transport path 27 and is transported to the registration roller 29. The registration roller 29 controls the timing of the sheet P to enter the secondary transfer position and conveys the sheet P to the secondary transfer position. The sheet P on which the toner image is transferred at the secondary transfer position is conveyed to the fixing device 3 (shown by the broken line). Then, the sheet P on which the toner image is fixed by the fixing device 3 is discharged to the discharge tray 1a provided on the upper portion of the printer housing 1 via the discharge roller 28. In forming a full-color image by the printer configured in this way, first, the optical scanning device 40 exposes the photosensitive drum 50 of each image forming engine 10 at a predetermined timing according to the image information of each color.

[Configuration of optical scanning device]
FIG. 2 is a perspective view showing the configuration of the optical scanning device 40 of the first embodiment. In FIG. 2, the housing (also referred to as an optical box) 101 of the optical scanning device 40 has a bottom surface (bottom portion) which is a plane parallel to the XY plane and an outer wall (standing up from the bottom surface and substantially parallel to the Z-axis direction). It has a side wall, hereinafter also referred to as an outer peripheral portion). A first substrate on which a laser emitting source (light source 61 in FIG. 4) that emits a light beam (laser light) is mounted on one side wall of the outer peripheral portion (side wall) of the housing 101 of the optical scanning device 40. The external board 42 is attached. Inside the optical scanning device 40, an optical mounting member 67 having a cylindrical lens and guiding a light beam emitted from a light source of an external substrate 42 to a rotating multifaceted mirror 51 is provided. Further, inside the optical scanning device 40, a rotating multifaceted mirror 51 that reflects and deflects a light beam is integrally installed in the housing 101. Further, inside the optical scanning device 40, optical lenses 63 (63a to 63f), reflection mirrors 62 (62a to 62h), etc. of the exit optical system (optical member) that guide the light beam onto the photosensitive drum 50 to form an image. Is integrally installed in the housing 101. The reflection mirror 62 is fixed to the housing 101 by fixing springs at both ends in the longitudinal direction (Y-axis direction). The light beam deflected by the rotating multi-sided mirror 51 is configured to be guided by the optical lenses 63b, 63d, 63e, 63f after passing through the optical lenses 63a and 63c. The light beam that has passed through the optical lens 63 is reflected by the reflection mirror 62 at least once, guided to the photosensitive drum 50, and imaged.

The housing 101 is provided with an opening surrounded by a side wall and through which the rotary multifaceted mirror 51 is passed when the rotary multifaceted mirror 51 is installed on the bottom surface. The opening of the housing 101 is closed by a cover member (not shown). The cover member has a plurality of snap fits (not shown) which are a plurality of first locking portions. Further, on the outside of the side wall of the housing 101, a plurality of snap fits (a plurality of snap fits) which are a plurality of second locking portions which are locked to each of the plurality of snap fits on the cover member side when the cover member closes the opening. Not shown). In FIG. 2, for convenience of explanation, the cover member that seals the upper opening of the housing 101 is omitted.

Subsequently, a state in which the light beam emitted from the light source of the external substrate 42 is applied to the photosensitive drum 50 will be described in detail with reference to FIG. 3 showing a cross section of the optical scanning device 40. FIG. 3 is a cross-sectional view of the optical scanning device 40 for explaining how the laser beam deflected by the rotating multifaceted mirror 51 is guided to the photosensitive drum 50. The opening of the housing 101 is closed by the cover member 68. The optical scanning device 40 rotates at a high speed to rotate each optical beam so as to scan the optical beams of the four optical paths along the rotation axis direction of the photosensitive drum 50. A deflector unit 41 including a motor unit 49 as a means is provided. The deflector unit 41, which is a deflecting means, is a second substrate on which a rotary multifaceted mirror 51, a motor unit 49 for driving a motor for rotating the rotary multifaceted mirror 51, a rotary multifaceted mirror 51, and a motor unit 49 are mounted. Includes a deflector substrate (not shown). The light beam deflected by the rotating multifaceted mirror 51 of the deflector unit 41 passes through the optical lens 63, is guided to the photosensitive drum 50 which is the surface to be scanned by the reflection mirror 62, and is imaged on the photosensitive drum 50. ..

The light beam LY corresponding to the photosensitive drum 50Y emitted from the light source of the external substrate 42 is deflected by the rotating multifaceted mirror 51 and incident on the optical lens 63a. The light beam LY that has passed through the optical lens 63a is incident on the optical lens 63b, passes through the optical lens 63b, and is then reflected by the reflection mirror 62a. The light beam LY reflected by the reflection mirror 62a passes through the transparent window 69a and scans the photosensitive drum 50Y.

The laser beam LM corresponding to the photosensitive drum 50M emitted from the light source of the external substrate 42 is deflected by the rotating multifaceted mirror 51 and incident on the optical lens 63a. The laser beam LM that has passed through the optical lens 63a is reflected by the reflection mirror 62b and the reflection mirror 62c, is incident on the optical lens 63e, passes through the optical lens 63e, and is reflected by the reflection mirror 62d. The laser beam LM reflected by the reflection mirror 62d passes through the transparent window 69b and scans the photosensitive drum 50M.

The laser beam LC corresponding to the photosensitive drum 50C emitted from the light source of the external substrate 42 is deflected by the rotating multifaceted mirror 51 and incident on the optical lens 63c. The laser beam LC that has passed through the optical lens 63c is reflected by the reflection mirror 62e and the reflection mirror 62f and is incident on the optical lens 63f, and the laser beam LC that has passed through the optical lens 63f is reflected by the reflection mirror 62g. The laser beam LC reflected by the reflection mirror 62g passes through the transparent window 69c and scans the photosensitive drum 50C.

The light beam LBk corresponding to the photosensitive drum 50Bk emitted from the light source of the external substrate 42 is deflected by the rotating multifaceted mirror 51 and incident on the optical lens 63c. The light beam LBk that has passed through the optical lens 63c is incident on the optical lens 63d, passes through the optical lens 63d, and is reflected by the reflection mirror 62h. The light beam LBk reflected by the reflection mirror 62h passes through the transparent window 69d and scans the photosensitive drum 50Bk.

[Cable tie route]
FIG. 4 is a diagram showing a path of a bundled line 43 in which a plurality of signal lines for electrically connecting the deflector unit 41 of the first embodiment and the external substrate 42 are bundled into one bundle. FIG. 4 shows a view of the cover member 68 removed and viewed from the + Z direction (opening side) so that the inside of the housing 101 can be seen. In FIG. 4, some reference numerals of the members described in FIG. 2 and the like are omitted.

The optical scanning device 40 has four light sources, and the light sources are mounted on the external substrate 42. One of the four light sources is the light source 61. Further, the side wall of the housing 101 on which the external substrate 42 (that is, the light source 61) is attached is designated as the side wall 101A. Further, the side wall facing the side wall 101A is referred to as the side wall 101B. Further, a side wall substantially orthogonal to the side wall 101A and the side wall 101B, and the side wall in the −X direction in the drawing is referred to as a side wall 101C. The side wall facing the side wall 101C (the side wall in the + X direction in the figure) is referred to as the side wall 101D. Further, on the outer side of the side walls 101A, 101B, 101C, and 101D of the housing 101, a crawling area 45 for restricting the movement of the bundle wire 43 in the vertical direction (Z direction) is provided. The side wall 101B is provided with a bundled wire outlet 46 for allowing the bundled wire 43 to exit from the inside of the housing 101, and a hooking portion 44 for hooking the bundled wire 43.

The bundled wire 43 having one end 43a connected to the deflector unit 41 is routed in the direction opposite to the side where the light source 61 is installed when viewed from the deflector unit 41. In other words, the bundled wire 43 is routed away from the light source 61. As a result, the bundled wire 43 passes through the side wall 101B of the housing 101 and exits the housing 101. The route around which the bundled wire 43 up to this point is routed is defined as the route A. The bundled wire 43 protruding from the inside of the housing 101 to the outside is routed along the outside side of the side wall 101B in the direction away from the deflector unit 41 in the X-axis direction (−X direction). As a result, the bundle wire 43 reaches the corner portion connecting the side wall 101B to the side wall 101C. The route around which the bundled wire 43 up to this point is routed is defined as the route B. As shown in FIG. 4, the crawling areas 45 are provided at two locations having different heights in the Z-axis direction, and are provided discontinuously substantially parallel to the bottom surface of the housing 101. Therefore, the bundle wire 43 is exposed in the portion of the crawling area 45 where the upper member is not provided, but the bundle wire 43 cannot be visually recognized by the upper member in the portion where the upper member is provided. The routing state of the bundled wire 43 is indicated by a chain line.

The bundle wire 43 is routed along the outer side of the side wall 101C in the direction approaching the outer substrate 42 in the Y-axis direction. As a result, the bundled wire 43 reaches the corner portion connecting the side wall 101C to the side wall 101A. The route around which the bundled wire 43 up to this point is routed is defined as the route C. The bundled wire 43 reaches the external substrate 42 along the outer side of the side wall 101A, and the other end 43b of the bundled wire 43 is connected to the external substrate 42. The route around which the bundled wire 43 up to this point is routed is defined as the route D. In this way, the bundled wire 43 goes around the outside of the path A → the path B → the path C → the path D and the housing 101 about halfway along the side walls 101B, 101C, 101A, and goes to the external substrate 42 on which the light source 61 is mounted. Is connected with. When the connecting portion of the other end 43b of the bundled wire 43 is provided at the end portion in the + X direction in FIG. 4 on the external substrate 42, the side wall 101B → the side wall 101D → the side wall 101A after the path A. , The half circumference opposite to the above description may be used as the route. Routes A to D are collectively called bundled routes.

At this time, the reason why the bundled wire 43 is routed in the direction opposite to the light source 61 as in the path A is to prevent the bundled wire 43 from obstructing the optical path of the laser beam L from the light source 61 to the rotating multifaceted mirror 51. Is. The bundled wire 43 passes through a crawling area 45 provided on the outer periphery of the housing 101 and is connected to the external substrate 42. As described above, one end 43a of the bundled wire 43 is connected to the deflector unit 41, and the bundled wire 43 is crawled from the inside of the housing 101 along the longitudinal direction of the optical member. The bundle wire 43 is routed around the outside of the housing 101 through the side wall 101B facing one side wall 101A, and the other end 43b is connected to the external substrate 42.

[Cable tie exit and hook]
FIG. 5 is an enlarged view of a portion where the bundled wire 43 of the side wall 101B of the first embodiment protrudes from the inside of the housing 101 to the outside. The double-headed arrow 201 indicates the direction of the optical axis. The bundle wire outlet 46 has a notch-shaped portion 461 provided in a notch shape in the Z direction of the side wall 101B, and a protrusion 462 protruding from the side wall 101B toward the inside of the housing 101, and the bundle wire 43 Is a portion through which the housing 101 passes from the inside to the outside. The bundle wire outlet 46 functions as a notch provided in the side wall 101B facing one side wall 101A to guide the bundle wire 43 from the inside to the outside of the housing 101. The above-mentioned crawling area 45 is provided along the outside of the side wall at a position lower than the bundle wire outlet 46 in the vertical direction, and functions as a guide portion for crawling the bundle wire 43.

The notch-shaped portion 461 of the bundle wire outlet 46 has a length (hereinafter, referred to as a width) 46A in the X-axis direction (optical axis direction 201). The width 46A is called the bundled wire exit range. In the first embodiment, the bundled wire outlet range 46A is provided so as to be, for example, 9.5 mm. The surface 102 is a surface of the side wall 101B facing the cover member 68, and is a surface where the housing 101 and the cover member 68 come into contact with each other when the cover member 68 is attached to the housing 101. Hereinafter, the surface 102 is referred to as a contact surface 102. Further, a snap fit 70 is provided on the side wall 101B of the housing 101, and engages with the snap fit (not shown) on the cover member 68 side. The snap fit is also provided on the other side walls 101A, 101C, and 101D.

FIG. 5 shows a state in which the bundled wire 43 passes through the bundled wire outlet 46 of the housing 101 (side wall 101B) and is hooked on the hooked portion 44. The bundled wire 43 is guided to the crawling area 45 via the hooking portion 44. The vicinity of the bundle wire outlet 46 is pressed by a dustproof member (not shown) provided on the cover member 68 side when the cover member 68 is attached to the housing 101. At this time, the bundled wire 43 itself on the bundled wire outlet 46 is also pressed by the dustproof member on the cover member 68 side, so that the airtightness inside the housing 101 is ensured.

(Hook part)
A hook portion 44 is installed in the vicinity of the bundling wire outlet 46. The hooking portion 44 is provided to guide the bundled wire 43 from the bundled wire outlet 46 to the crawling area 45. The bundled wire 43 passes through the hooked portion 44, and specifically, is hooked on the hooked portion 44 when going from top to bottom in the hooked portion 44, thereby connecting to the external substrate 42 via the bundled wire path. Will be done.

The hooking portion 44 is substantially orthogonal to the X-axis direction (optical axis direction 201) and substantially parallel to the Y-axis, and the second regulating portion 44A is substantially orthogonal to the Y-axis direction and substantially parallel to the X-axis. It has 44B and. The first regulating unit 44A regulates the movement of the bundled wire 43 in the optical axis direction 201, and prevents the bundled wire 43 from entering the optical path in the optical axis direction 201. The first regulation unit 44A may be provided singly or a plurality. The second regulation unit 44B is installed substantially orthogonal to the first regulation unit 44A, and restricts the movement of the bundle wire 43 in the Y-axis direction (longitudinal direction), for example, the bundle wire 43 is pulled in the + Y direction. It prevents one end 43a of the bundled wire 43 from being detached from the deflector unit 41. The first regulation unit 44A is installed at a position within the bundled wire outlet range 46A (within the range) in the X-axis direction (optical axis direction 201). In other words, it can be said that the hook portion 44 is provided directly below the bundle wire outlet 46. Further, at least one snap fit 70 is installed at a position within the bundled wire outlet range 46A in order to improve the airtightness due to contact between the housing 101 and the cover member 68 at the position of the bundled wire outlet 46. .. In other words, the first regulation unit 44A is provided in the vicinity of the snap fit 70.

In the assembling process until the bundled wire 43 coming out of the bundled wire outlet 46 is pulled toward the outer periphery of the housing 101 and connected to the external substrate 42, the bundled wire 43 gets over the bundled wire outlet 46 and covers the housing 101. A force is applied in the direction of reaching the contact surface 102 with the member 68. However, by installing the first regulating portion 44A of the hooking portion 44, the movement of the bundled wire 43 in the tensile direction, that is, the wire biting between the housing 101 and the cover member 68 is prevented.

Further, when the tensile force applied to the bundled wire 43 is released at the time of assembling after the bundled wire 43 discharged from the bundled wire outlet 46 is connected to the external substrate 42, the bundled wire 43 is loosened due to loosening. To do. In the first embodiment, by providing the surfaces of the first regulating portion 44A and the second regulating portion 44B of the hooking portion 44 in the vicinity of the bundled wire outlet 46 in at least two directions, it is possible to prevent the bundled wire 43 from being loosened. To.

Further, when the bundle wire 43 is guided from the bundle wire outlet 46 to the crawling area 45 downward in the Z-axis direction, an opening 48 is provided in the hooking portion 44 to facilitate hooking of the bundle wire 43. The third regulating portion 47 forms an opening 48 together with the hooking portion 44. The third regulating unit 47 regulates the movement of the bundled wire 43 in the + X direction when the tensile force is released when the bundled wire 43 is routed and the bundled wire 43 is loosened. In FIG. 5 and the like, the third regulating portion 47 has a curved shape in order to smooth the hooking operation of the bundled wire 43 on the hooking portion 44, but it may have another shape.

(Structure in the height direction)
FIG. 6 is a diagram illustrating a configuration in the height direction (Z-axis direction) in the vicinity of the hook portion 44 of the first embodiment. The surface of the notch-shaped portion 461 of the bundle wire outlet 46 on the side facing the cover member 68 is defined as the surface 46B. The surface 46B is provided so as to be lower than the surface 102 in the height direction. Further, the surface of the protruding portion 462 of the bundled wire outlet 46 on the side facing the cover member 68 is designated as the surface 462A. The surface 462A is provided so as to be lower than the surface 102 in the height direction and higher than the surface 46B. By lowering the surface 46B than the surface 462A, the bundled wire 43 can be guided downward when the bundled wire 43 comes out from the inside of the housing 101, and the bundled wire 43 can be prevented from riding on the surface 102. be able to.

In the first embodiment, the position of the bundled wire outlet 46 in the height direction, that is, the position of the hooking portion 44 in the height direction of the surface 46B, that is, the first regulating portion 44A and the second regulating portion 44B are installed lower. The distance between the height of the surface 46B and the height of the first regulating portion 44A or the second regulating section 44B (hereinafter referred to as a step) is defined as a step distance 46C. In the first embodiment, for example, the step distance 46C is set to 6.7 mm. With such a positional relationship, the movement of the bundled wire 43 in the height direction is prevented, that is, wire biting and loosening, similar to the effects of the first regulating portion 44A and the second regulating portion 44B of the hooking portion 44 described above. Can be prevented. When the bundled wire 43 is routed around the right half circumference in FIG. 4, the hooking portion 44, the third regulating portion 47, and the opening 48 may be configured symmetrically with respect to the Y axis in FIG. 5 and the like. Good.

As described above, according to the first embodiment, it is possible to prevent the bundled wire wired between the inside and the outside of the housing from being loosened or broken while maintaining the dustproof performance inside the housing.

In the first embodiment, the configuration in which the first regulating portion 44A of the hooking portion 44 is installed within the bundled wire outlet range 46A with respect to the position of the bundled wire outlet 46 in the optical axis direction 201 has been described. In the second embodiment, a configuration will be described in which the first regulating portion 44A of the hooking portion 44 is installed outside the bundled wire outlet range 46A to prevent the bundled wire 43 from being bitten.

[Hooking portion 44 of Example 2]
FIG. 7 is a diagram showing the configuration of the bundled wire 43 and the hooking portion 44 of the second embodiment. The bundled wire 43 exiting from the bundled wire outlet 46 is connected to the external substrate 42 by half-circling the housing 101 as in FIG. The arrow shown in FIG. 7 indicates the crawling direction outside the housing 101 after the bundle wire 43 has come out of the housing 101, and corresponds to the path B in FIG. The hook portion 44 is arranged on the side opposite to the crawling direction outside the housing 101 when viewed from the bundling outlet 46, in other words, in a direction away from the crawling direction of the bundling wire 43. The contact surface 46D is a surface where the bundle wire outlet 46 and the bundle wire 43 come into contact with each other. With this configuration, the hooking portion 44 is suppressed, and loosening (disassembly) and wire biting of the bundled wire 43 can be prevented as in the first embodiment. However, if the bundled wire 43 gets on the contact surface 102, wire biting occurs, so that the position of the hooking portion 44 needs to be limited.

(Range of the position where the hook is provided)
FIG. 8 is a diagram for explaining a range of positions where the hook portion 44 is provided. The central portion of the contact surface 46D of the bundle wire outlet 46 with the bundle wire 43 in the optical axis direction 201 is defined as the central portion 46F. A straight line J is drawn from the central portion 46F toward the central portion of the first regulating portion 44A of the hooking portion 44, for example, in the Y-axis direction. The angle formed by the straight line J and the straight line K parallel to the optical axis direction 201 is defined as the angle 46E. At this time, the angle 46E is set to, for example, within 45 °. By limiting the position of the hooking portion 44 so that the angle 46E is within 45 degrees in this way, it is possible to prevent the bundled wire 43 from getting over the contact surface 102.

In the configuration of the second embodiment, the hook portion 44 is provided in the direction opposite to the direction in which the bundle wire 43 is routed around the side wall 101B. The angle between the hooking portion 44 and the straight line J connecting the position where the bundled wire outlet 46 and the bundled wire 43 come into contact with the first regulating portion 44A and the straight line K substantially parallel to the optical axis direction is 45 degrees or less. It is provided as follows. Therefore, there are points such as an increase in the length of the bundled wire 43, an acute angle of bending of the bundled wire 43 by the hooking portion 44, and an increase in the load. However, when the housing 101 has an arrangement limitation such that the hook portion 44 cannot be provided directly under the bundle wire outlet 46 as in the first embodiment, the configuration as in the second embodiment is arranged. It can be one of the effective means to meet the restrictions.

As described above, according to the second embodiment, it is possible to prevent loosening or disconnection of the bundled wire wired between the inside and the outside of the housing while maintaining the dustproof performance inside the housing.

41 Deflection unit 42 External board 43 Bundled wire 44 Hooking part 45 Crawling area 46 Bundled wire outlet 61 Light source 101 Housing

Claims (6)

A light source that emits a light beam and
A first substrate on which the light source is mounted and
A deflecting means having a rotating multi-sided mirror for deflecting a light beam emitted from the light source and a driving means for driving the rotating multi-sided mirror.
A second substrate on which the deflection means is mounted and
An optical member for guiding the light beam deflected by the rotating multifaceted mirror to the object to be scanned, and
A housing having a bottom surface on which the second substrate is installed and a side wall erected from the bottom surface, and the first substrate is attached to the outside of one side wall of the side walls.
An optical scanning device equipped with
One end is connected to the second substrate, crawls from the inside of the housing along the longitudinal direction of the optical member, and is routed outside the housing through a side wall facing the one side wall. And the other end of the bundled wire connected to the first substrate,
A notch provided on the side wall facing the one side wall to guide the bundled wire from the inside to the outside of the housing, and
A guide portion provided along the outside of the side wall at a position lower than the notch portion in the vertical direction and crawling the bundled wire, and a guide portion.
A hooking portion for hooking the bundled wire in order to guide the bundled wire from the notch portion to the guide portion,
With
The hooking portion is characterized by having a first regulating portion that regulates the movement of the bundled wire in the optical axis direction and a second regulating portion that regulates the movement of the bundled wire in the longitudinal direction. Optical scanning device. The optical scanning apparatus according to claim 1, wherein the hook portion is provided at a position lower than the cutout portion in the vertical direction. The optical scanning apparatus according to claim 2, wherein the first regulating portion is provided within a range of length of the cutout portion in the optical axis direction. A cover having a plurality of first locking portions and surrounded by the side wall to close the opening through which the second substrate is passed when the second substrate is installed on the bottom surface. Members and
A plurality of second locking portions provided on the side wall and locked to each of the plurality of first locking portions when the cover member closes the opening.
With
The optical scanning apparatus according to claim 3, wherein at least one of the plurality of second locking portions is provided within a range of length of the cutout portion in the optical axis direction. The hook portion is provided in a direction opposite to the direction in which the bundle wire is routed around the side wall facing the one side wall, and the position where the notch portion and the bundle wire come into contact and the first regulation. The optical scanning apparatus according to claim 2, wherein the angle formed by the straight line connecting the portions and the straight line substantially parallel to the optical axis direction is 45 degrees or less. Photoreceptor and
The optical scanning apparatus according to any one of claims 1 to 5, which forms an electrostatic latent image on the photoconductor.
A developing means for developing an electrostatic latent image formed on the photoconductor by the optical scanning device with toner to form a toner image,
A transfer means for transferring the toner image to the recording material,
An image forming apparatus comprising.

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