JP2012103322A - Support structure of electrical components, developing device, and image forming apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a support structure of electrical components for suppressing misalignment of electrical components attached to a support member without using additional components, a developing device, and an image forming apparatus.SOLUTION: A support structure of electrical components comprises a wiring support member 136 having a protrusion 150, which is abutted with a first stop 132A so that the first stop 132A does not bend toward a second stop 132B side, in a state where a detection member 124 is attached to a support member 126. The configuration allows misalignment of the detection member 124 to be suppressed without using additional dedicated components.

Description

  The present invention relates to a support structure for an electrical component, a developing device, and an image forming apparatus.

  Patent Document 1 describes a configuration in which the claw is unlocked by a versatile tool.

  Specifically, the snap-fit coupling member houses a pair of swing pieces with respect to the inside of the frame. The swinging piece is connected to the frame body on the back side of the intermediate portion by a support bar, and has a locking portion at the lower end. A convex portion is formed on the opposite side of the upper end of the swing piece, and a tool such as a screwdriver is inserted between the convex portions to swing the lower end of the swing piece toward the opposite side. The latching state of the latching part latched by the stop hole is released.

JP 2003-32862 A

  The subject of this invention is suppressing the position shift of the electrical component attached to the support member, without using an additional component.

The electrical component support structure according to claim 1 includes a support member and a mounting portion that is supported by the support member and to which electrical wiring is attached, and is movable in one direction while being attached to the support member. An electrical component and the electrical wiring, supported by the support member so as to move in another direction crossing the one direction guided by a guide portion formed on the support member, and An electrical component according to claim 2, further comprising: a wiring support member disposed so as to contact the electrical component when the electrical component supported by the support member moves in the one direction. The support structure according to claim 1, wherein the electric component attached to the support member is moved in the one direction when the wiring support member is not attached to the support member. An air component is removed from the support member.

  According to a third aspect of the present invention, in the electric component support structure according to the first or second aspect, the wiring support member is guided by the guide portion formed on the support member and moved in the other direction. It is attached to and detached from the support member.

  According to a fourth aspect of the present invention, there is provided the electrical component support structure according to any one of the first to third aspects, wherein the one direction and the other direction are orthogonal to each other.

  A developing device according to a fifth aspect includes a plurality of developing rolls, a rotating body that is rotatably supported along the outer peripheral surface of the plurality of developing rolls, and that rotates about a rotation axis. An electrical component supported by a support member by the electrical component support structure described in any one of claims 4 to 4, wherein the detection unit detects the rotary body in a state where the rotary body is stopped at a predetermined position; It is characterized by providing.

  According to a sixth aspect of the present invention, there is provided an image forming apparatus comprising: the developing device according to the fifth aspect; and an image holding body on which an electrostatic latent image formed on a surface is developed by the developing device.

  According to the configuration of the first aspect of the present invention, it is attached to the support member without using an additional component, as compared with the case where the wiring support member is not disposed so as to come into contact with the electrical component that is moving in one direction. It is possible to suppress the displacement of the electrical components that have been made.

  According to the configuration of the second aspect of the present invention, compared to the case where the wiring support member is not disposed so as to come into contact with the electrical component that moves in one direction, it is attached to the support member without using an additional component. It is possible to suppress the detached electrical component from being removed (detached) from the support member.

  According to the configuration of the third aspect of the present invention, the wiring that hits the electrical component that is going to move in one direction as compared with the case where the wiring supporting member moves in one direction and is detached from the supporting member. The support member is prevented from being detached from the support member.

  According to the configuration of claim 4 of the present invention, as compared with a configuration in which one direction and the other direction are not orthogonal to each other, it is possible to effectively suppress the displacement of the electrical component attached to the support member. Can do.

  According to the structure of Claim 5 of this invention, compared with the case where the detection member supported by a support member by the support structure of the electrical component described in any one of Claims 1-4 is not provided, It is possible to improve the detection accuracy of a rotating body stopped at a predetermined position without using a part.

  According to the configuration of the sixth aspect of the present invention, the quality of the output image can be improved as compared with the case where the developing device according to the fifth aspect is not provided.

It is the perspective view which showed the support structure of the electrical component which concerns on this embodiment. It is the perspective view which showed the support structure of the electrical component which concerns on this embodiment. It is the perspective view which showed the support structure of the electrical component which concerns on this embodiment. (A) (B) (C) It is the perspective view which showed the support structure of the electrical component which concerns on this embodiment. It is the side view which showed the support structure of the electrical component which concerns on this embodiment. It is the top view which showed the support structure of the electrical component which concerns on this embodiment. FIG. 2 is an enlarged perspective view showing a developing device according to the present embodiment. FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 6, showing a structure for supporting an electrical component according to the present embodiment. FIG. 9 is a cross-sectional view taken along line 9-9 of FIG. 6, showing the structure for supporting an electrical component according to the present embodiment. It is the perspective view which showed the developing device which concerns on this embodiment. FIG. 2 is a configuration diagram illustrating a developing device and the like according to the present embodiment. 1 is a schematic configuration diagram illustrating an image forming apparatus according to an exemplary embodiment.

  Hereinafter, an exemplary embodiment of a support structure for an electrical component, a developing device, and an image forming apparatus according to the present invention will be described with reference to FIGS.

(overall structure)
First, the configuration of the image forming apparatus according to the present embodiment will be described. FIG. 12 is a schematic diagram illustrating the configuration of the image forming apparatus according to the present embodiment.

  The image forming apparatus 10 forms an image on a paper storage unit 12 that stores recording paper P as an example of a recording medium, and the recording paper P that is provided on the paper storage unit 12 and is supplied from the paper storage unit 12. The image forming unit 14 to be performed, the document reading unit 16 provided on the image forming unit 14 for reading the read document G, and the control unit 20 provided in the image forming unit 14 and controlling the operation of each unit of the image forming apparatus 10. And.

  In the following description, the vertical direction of the apparatus main body 10A of the image forming apparatus 10 is described as an arrow V direction, and the horizontal direction is described as an arrow H direction.

  The sheet storage unit 12 is provided with a first storage unit 22, a second storage unit 24, and a third storage unit 26 that store recording sheets P of different sizes. The first storage unit 22, the second storage unit 24, and the third storage unit 26 are provided with a delivery roll 32 that sends out the stored recording paper P to a conveyance path 28 provided in the image forming apparatus 10. . A pair of transport rolls 34 and transport rolls 36 that transport the recording paper P one by one are provided on the transport path 28 downstream of the feed roll 32.

  An alignment roll 38 that stops the recording paper P at one end and feeds it to a secondary transfer position (described later) at a predetermined timing downstream of the conveyance roll 36 in the conveyance direction of the recording paper P in the conveyance path 28. Is provided.

  The upstream portion of the conveyance path 28 is provided in a straight line from the left side of the sheet storage unit 12 to the lower left side of the image forming unit 14 in the arrow V direction when the image forming apparatus 10 is viewed from the front. The downstream portion of the conveyance path 28 is provided from the lower left portion of the image forming portion 14 to the paper discharge portion 15 provided on the right side surface of the image forming portion 14. Further, a double-sided conveyance path 29 through which the recording paper P is conveyed and reversed in order to form an image on both sides of the recording paper P is connected to the conveyance path 28.

  The double-sided conveyance path 29 includes a first switching member 31 that switches between the conveyance path 28 and the double-sided conveyance path 29 from the lower right side of the image forming unit 14 to the right side of the sheet storage unit 12 in a front view of the image forming apparatus 10. A reversing unit 33 linearly provided in the direction of arrow V, a transporting unit 37 transported in the direction of arrow H while the rear end of the recording paper P transported to the reversing unit 33 enters, a reversing unit 33 and a transporting unit And a second switching member 35 for switching 37. The reversing unit 33 is provided with a pair of conveying rolls 42 at intervals, and the conveying unit 37 is provided with a pair of conveying rolls 44 at intervals.

  The first switching member 31 is a triangular prism-shaped member, and the leading end portion is moved to either the transport path 28 or the double-side transport path 29 by a driving unit (not shown) so as to switch the transport direction of the recording paper P. It has become. Similarly, the second switching member 35 is a triangular prism-like member, and the conveyance direction of the recording paper P is switched by moving the leading end to either the reversing unit 33 or the conveyance unit 37 by a driving unit (not shown). It is like that. The downstream end of the transport unit 37 is connected to the front side of the transport roll 36 in the upstream portion of the transport path 28 by a guide member (not shown). In addition, a folding-type manual sheet feeding unit 46 is provided on the left side surface of the image forming unit 14, and the recording sheet P can be conveyed from the manual sheet feeding unit 46 to the alignment roll 38 of the conveyance path 28. Has been.

  The document reading unit 16 is transported by a document transport device 52 that transports the read document G one by one, a platen glass 54 that is arranged below the document transport device 52 and on which the read document G is placed, and is transported by the document transport device 52. A document reading device 56 that reads the read document G or the read document G placed on the platen glass 54 is provided. The document conveying device 52 has a conveying path 55 in which a plurality of pairs of conveying rolls 53 are arranged, and a part of the conveying path 55 is arranged so that the recording paper P passes over the platen glass 54. The document reading device 56 reads the read document G conveyed by the document conveying device 52 while being stationary at the left end portion of the platen glass 54, or is read on the platen glass 54 while moving in the arrow K direction. G is read.

  On the other hand, the image forming unit 14 is provided with a cylindrical image carrier 62 in the center of the apparatus main body 10A. The image holding body 62 is rotated in the arrow + R direction (clockwise direction in FIG. 12) by a driving unit (not shown) and holds an electrostatic latent image formed by light irradiation. A corotron charging device 64 that charges the surface of the image carrier 62 is provided above the image carrier 62 and at a position facing the outer peripheral surface of the image carrier 62.

  An exposure device 66 is provided at a position downstream of the charging device 64 in the rotation direction of the image carrier 62 and facing the outer peripheral surface of the image carrier 62. The exposure device 66 forms an electrostatic latent image by irradiating (exposing) light to the outer peripheral surface of the image carrier 62 charged by the charging device 64 based on the image signal corresponding to each toner color. .

  The electrostatic latent image formed on the outer peripheral surface of the image carrier 62 is developed with toner of a predetermined color on the downstream side of the portion irradiated with the exposure light of the exposure device 66 in the rotation direction of the image carrier 62. Then, a rotation switching type developing device 70 that is visualized is provided. A specific configuration of the developing device 70 will be described later.

  An intermediate transfer belt 68 to which a toner image formed on the outer peripheral surface of the image carrier 62 is transferred is downstream of the developing device 70 in the rotation direction of the image carrier 62 and below the image carrier 62. Is provided. The intermediate transfer belt 68 is endless, and is driven by being in contact with a drive roll 61 that is rotationally driven by the control unit 20, a tension applying roll 63 for applying tension to the intermediate transfer belt 68, and the back surface of the intermediate transfer belt 68. It is wound around a plurality of rotating transport rolls 65 and an auxiliary roll 69 that rotates in contact with the back surface of the intermediate transfer belt 68 at a secondary transfer position described later. The intermediate transfer belt 68 rotates in the direction of the arrow -R (counterclockwise direction in FIG. 11) as the drive roll 61 rotates.

  A primary transfer roll 67 is provided on the opposite side of the image carrier 62 across the intermediate transfer belt 68 to primarily transfer the toner image formed on the outer peripheral surface of the image carrier 62 to the intermediate transfer belt 68. . The primary transfer roll 67 is in contact with the back surface of the intermediate transfer belt 68 at a position away from the position where the image carrier 62 and the intermediate transfer belt 68 are in contact with the downstream side in the moving direction of the intermediate transfer belt 68. When the primary transfer roll 67 is energized from a power source (not shown), the toner image on the image carrier 62 is primarily transferred to the intermediate transfer belt 68 by a potential difference from the grounded image carrier 62. Yes.

  Further, on the opposite side of the auxiliary roll 69 across the intermediate transfer belt 68, a secondary transfer roll 71 as an example of transfer means for secondary transfer of the toner image primarily transferred onto the intermediate transfer belt 68 onto the recording paper P. Between the secondary transfer roll 71 and the auxiliary roll 69 is a secondary transfer position for transferring the toner image onto the recording paper P.

  The secondary transfer roll 71 is in contact with the surface of the intermediate transfer belt 68. When the secondary transfer roll 71 is energized from a power source (not shown), the toner image on the intermediate transfer belt 68 is secondarily transferred onto the recording paper P by a potential difference from the auxiliary roll 69 that is grounded. Yes.

  As shown in FIG. 11, on the opposite side of the drive roll 61 across the intermediate transfer belt 68, a cleaning device 100 as an example of a developer recovery device that recovers residual toner after secondary transfer of the intermediate transfer belt 68. Is provided. In the cleaning device 100, the cleaning blade 106 contacts the intermediate transfer belt 68 and scrapes off the toner. The cleaning blade 106 and the secondary transfer roll 71 of the cleaning device 100 are arranged so that the toner images of the respective colors are multiplexed (primary) transferred to the intermediate transfer belt 68 and secondarily transferred onto the recording paper P until the toner images of the intermediate transfer belt 68 are secondarily transferred. It is designed to be away from the outer peripheral surface.

  Further, a predetermined reference on the intermediate transfer belt 68 is detected by detecting a mark (not shown) on the surface of the intermediate transfer belt 68 at a position facing the tension applying roll 63 around the intermediate transfer belt 68. A position detection sensor 83 is provided for detecting a position and outputting a position detection signal that serves as a reference for the start timing of the image forming process.

  A cleaning device 73 is provided on the downstream side of the primary transfer roller 67 in the rotation direction of the image carrier 62 to clean residual toner and the like remaining on the surface of the image carrier 62 without being primarily transferred to the intermediate transfer belt 68. ing. The cleaning device 73 is configured to collect residual toner and the like with a cleaning blade and a brush roll that are in contact with the surface of the image carrier 62. Further, on the upstream side (downstream side of the primary transfer roll 67) of the cleaning device 73 in the rotation direction of the image carrier 62, a static eliminator 75 is provided that performs static elimination by irradiating the outer peripheral surface of the image carrier 62 with light. It has been.

  The static eliminator 75 irradiates the outer peripheral surface of the image carrier 62 with light before collecting residual toner or the like by the cleaning device 73 to reduce static electricity, thereby increasing the recovery rate of residual toner or the like. belongs to. It should be noted that neutralization means after collecting residual toner or the like may be provided on the downstream side of the cleaning device 73 and the upstream side of the charging device 64.

  As shown in FIG. 12, the secondary transfer position of the toner image by the secondary transfer roll 71 is set in the middle of the above-described transport path 28, and the transport direction of the recording paper P in the transport path 28 (indicated by the arrow A). A fixing device 80 for fixing the toner image on the recording paper P onto which the toner image has been transferred by the secondary transfer roll 71 is provided downstream of the secondary transfer roll 71 in FIG. The fixing device 80 is disposed on the toner image surface side (upper side) of the recording paper P, and has a heating roll 82 having a heat source that generates heat when energized, and the recording paper P disposed on the lower side of the heating roll 82 and the outer periphery of the heating roll 82. It is comprised with the pressurization roll 84 which pressurizes toward a surface. A transport roll 39 that transports the recording paper P toward the paper discharge unit 15 or the reversing unit 33 is provided downstream of the fixing device 80 in the transport direction of the recording paper P in the transport path 28.

  On the other hand, below the document reading device 56 and above the developing device 70, yellow (Y), magenta (M), cyan (C), black (K), first special color (E), and second special color. Toner cartridges 78Y, 78M, 78C, 78K, 78E, and 78F that store the respective color (F) toners are provided to be replaceable in the horizontal direction.

  The first special color E and the second special color F are selected from special colors (including transparent) other than yellow, magenta, cyan, and black, or are not selected. Then, when the first special color E and the second special color F are selected, the developing device 70 forms an image with six colors of Y, M, C, K, E, and F, and the first special color E When the second special color F is not selected, image formation with four colors Y, M, C, and K is performed.

  In the image forming apparatus 10, an opening / closing part 10 </ b> B that opens and closes with respect to the apparatus main body 10 </ b> A is provided on the right side surface of the image forming part 14.

  Next, a specific configuration of the developing device 70 will be described.

  As shown in FIGS. 10 and 11, the developing device 70 includes a rotating body 86 that is rotatably supported about a rotation shaft 86 </ b> A with respect to the apparatus main body 10 </ b> A (see FIG. 12).

  Then, along the outer peripheral surface of the rotating body 86, yellow (Y), magenta (M), cyan (C), black (K), first special color (E), and second special color (F) toners. Developing units 72Y, 72M, 72C, 72K, 72E, and 72F corresponding to the colors are arranged in this order.

  As shown in FIG. 11, in the developing device 70, a developing device 72 </ b> Y that performs development processing by rotating a rotating body 86 in the direction of the arrow + R by 60 ° at a central angle by a motor (not shown) as a rotating unit. 72M, 72C, 72K, 72E, and 72F are switched to face the outer peripheral surface of the image carrier 62. Since the developing units 72Y, 72M, 72C, 72K, 72E, and 72F have the same configuration, the developing unit 72Y will be described here, and the other developing units 72M, 72C, 72K, 72E, and 72F will be described. Is omitted.

  The developing device 72Y includes a case member 76 serving as a main body, and includes toner and a carrier that are supplied into the case member 76 from a toner cartridge 78Y (see FIG. 12) via a toner supply path (not shown). A developer (not shown) is filled. The case member 76 is formed with a rectangular opening 76 </ b> A facing the outer peripheral surface of the image holding body 62, and the outer peripheral surface of the opening 76 </ b> A faces the outer peripheral surface of the image holding body 62. A developing roll 74 is provided.

  The developing roll 74 is rotatably supported by the case member 76. Further, a plate-like regulating member 79 for regulating the layer thickness of the developer conveyed by the developing roll 74 is provided in the case member 76 near the opening 76A along the longitudinal direction of the opening 76A. Is provided.

  The developing roller 74 includes a cylindrical developing sleeve 74A that is rotatably provided, and a magnetic member 74B that includes a plurality of magnetic poles fixed inside the developing sleeve 74A. In the developing roll 74, a developer (carrier) magnetic brush is formed by the rotation of the developing sleeve 74A, and the layer thickness is regulated by the regulating member 79, so that the developer layer is formed on the outer circumferential surface of the developing sleeve 74A. Is supposed to form. The developer layer on the outer peripheral surface of the developing sleeve 74A is conveyed to a position facing the image holding body 62, and toner corresponding to the latent image (electrostatic latent image) formed on the outer peripheral surface of the image holding body 62 is used. Develop with adhesion.

  In addition, in the case member 76, two conveyance rollers 77 formed in a spiral shape are arranged in parallel so as to be rotatable, and the case member 76 is filled by rotating the two conveyance rollers 77. The developer is circulated and conveyed in the axial direction of the developing roll 74 (longitudinal direction of the developing device 72Y). The six developing rolls 74 provided in each of the developing units 72Y, 72M, 72C, 72K, 72E, and 72F are arranged in the circumferential direction so that the distance from the adjacent developing roll 74 is a central angle of 60 °. The next developing roller 74 is opposed to the outer peripheral surface of the image holding member 62 by switching the developing device 72. In order to make the developing roll 74 and the image holding body 62 face each other, the rotational position of the rotating body 86 must be detected with respect to the apparatus main body 10A (see FIG. 12).

(Main part configuration)
Next, a configuration for detecting the rotational position of the rotating body 86 with respect to the apparatus main body 10A (see FIG. 12) will be described.

  As shown in FIG. 10, a ring-shaped ring member 120 is provided as a component of the rotating body 86 on one end side in the rotating shaft direction (hereinafter simply referred to as “rotating shaft direction”) of the rotating body 86. The ring member 120 is also rotated by the rotation of the rotating body 86. The ring member 120 is formed with only one rectangular protrusion 122 that protrudes outward in the rotation axis direction.

  Further, as shown in FIG. 7, a detection member 124 is provided as an example of an electrical component that detects the protrusion 122. The detection member 124 is supported by a support member 126 by a support structure 130 for electrical components, and the support member 126 is fixed to the apparatus main body 10A.

  As shown in FIGS. 3 and 5, the detection member 124 includes a detection portion 124 </ b> A that is opened inward in the rotation axis direction, and a connector 124 </ b> B as an example of an attachment portion to which one end of an electrical wiring 134 described later is attached. I have. The detection member 124 detects the projection 122 when the projection 122 passes through the detection unit 124A or stops in the detection unit 124A.

  In addition, a pair of claw portions 132 projecting outward in the rotation axis direction are provided on the detection member 124 on the opposite side to the opening side of the detection portion 124A. The pair of claws 132 are disposed on the inner side (rotation shaft 86A side) of the rotating body 86 in the radial direction (an example of one direction, the direction of arrow G shown in FIG. 3) while being attached to the support member 126. A first claw 132A and a second claw 132B provided on the opposite side of the first claw 132A.

  The support member 126 has a rectangular through-hole 128 in which the first claw 132A is hooked on the edge and a rectangular through-hole 129 in which the second claw 132B is hooked on the edge. Are formed side by side. When the detection member 124 is attached to the support member 126, the first claw 132A and the second claw 132B are elastically deformed so as to approach each other, and the first claw 132A and the second claw 132B are supported by the through hole 128 and the through hole 129. The first claw 132A and the second claw 132B are elastically returned through the surface 126A of the member 126. Thereby, the detection member 124 is attached to the surface 126A side of the support member 126 (it is attached by what is called a snap fit).

  Next, the wiring support member 136 that supports the electrical wiring 134 (see FIG. 7) attached to the connector 124B of the detection member 124 will be described.

  As shown in FIG. 3, the wiring support member 136 includes a cylindrical portion 140 that supports the electrical wiring 134, and the cylindrical portion 140 can be freely opened and closed by engaging or disengaging the meshing portion 142. It is said that. With this configuration, the electrical wiring 134 is supported by the cylindrical portion 140 by inserting the electrical wiring 134 into the cylindrical portion 140 with the cylindrical portion 140 being opened and further engaging the engaging portion 142. Yes.

  Further, the wiring support member 136 is attached to the support member 126. Specifically, the bottom surface 140A of the cylindrical portion 140 on the side attached to the support member 126 has a T-shaped insertion portion 144 (see FIG. 3) as viewed from the attachment direction to the support member 126 (the direction of arrow J shown in FIG. 3). 6). The insertion portion 144 and the bottom surface 140A are connected by a connecting portion 146 having a rectangular cross section.

  Furthermore, the bottom surface 140A is provided with a pair of curved portions 148 that are curved in an umbrella shape so as to sandwich the connecting portion 146 when viewed from the direction of arrow G.

  Specifically, the bending portion 148 includes a first bending portion 148A disposed on the distal end side (T-shaped horizontal bar side) of the T-shaped insertion portion 144 and the first bending portion 148A across the connecting portion 146. And a second curved portion 148B provided on the opposite side. In addition, a protrusion 150 that protrudes in the direction of arrow G in a state of being attached to the support member 126 is provided at the tip of the second bending portion 148B. Then, in a state where the wiring support member 136 is attached to the support member 126, which will be described later, the bending portion 148 is elastically deformed by being pressed against the back surface 126B of the support member 126, and the backlash of the cylindrical portion 140 is suppressed by this restoring force. It has come to be.

  On the other hand, the support member 126 is formed with a through hole 152 to which the wiring support member 136 is attached. The through hole 152 has a T-shape that includes a horizontal hole portion 152A and a vertical hole portion 152B (an example of a guide portion) so as to correspond to the insertion portion 144 provided in the wiring support member 136. . And this vertical hole 152B is extended in the orthogonal direction (an example of another direction, the arrow H direction shown in FIG. 3) orthogonal to the arrow G direction mentioned above.

  With this configuration, when the wiring support member 136 is attached to the support member 126, the insertion / insertion portion 144 is inserted into the through hole 152 formed in the support member 126 so that the T shape corresponds to the back surface 126 </ b> B side of the support member 126. (See FIG. 2). With the insertion portion 144 inserted into the through hole 152, the wiring support member 136 is moved in the arrow H direction along the vertical hole portion 152B (see FIG. 1). Thereby, the wiring support member 136 is attached to the support member 126.

  Then, with the wiring support member 136 attached to the support member 126, the protrusion 150 provided on the distal end side of the second bending portion 148B hits the first claw 132A provided on the detection member 124, and the first claw 132A does not bend toward the second claw 132B (see FIG. 9).

  In addition, the first curved portion 148 </ b> A is provided with a protrusion 156 that protrudes from the back surface side of the support member 126. The protrusion 156 is fitted into the lateral hole 152 </ b> A of the through hole 152 in a state where the wiring support member 136 is attached to the support member 126. As a result, the movement of the wiring support member 136 attached to the support member 126 in the direction of arrow H is restricted (see FIG. 8).

  Further, as shown in FIGS. 6 and 7, on the back surface 126 </ b> B of the support member 126, as with the wiring support member 136, a wiring support member 160 that supports the electrical wiring 134 is a circle formed on the support member 126. It can be attached to the hole 162.

  Further, in the support member 126 formed by bending the plate member, a connection member 164 to which the other end of the electric wiring 134 is fixed is attached to a surface different from the surface to which the wiring support member 160 is attached.

(Function)
Next, a process of attaching the detection member 124, the wiring support member 136, and the like to the support member 126 will be described, and the operation of the electrical component support structure 130 will be described in the description.

  The first claw 132A and the second claw 132B of the detection member 124 are elastically deformed so as to approach each other, and the first claw 132A and the second claw 132B are passed through the through hole 128 and the through hole 129 from the surface 126A side of the support member 126. The first claw 132A and the second claw 132B are elastically returned. As a result, the detection member 124 is attached to the surface 126A of the support member 126 as shown in FIGS. 3 and 4A. Further, the connection member 164 is attached to the support member 126.

  Next, as shown in FIGS. 2 and 4B, the wiring support member 160 is attached to the circular hole 162 formed in the support member 126 from the back surface 126 </ b> B side of the support member 126. Further, the insertion portion 144 (see FIGS. 3 and 6) of the wiring support member 136 is inserted from the back surface 126B side of the support member 126 into the through hole 152 formed in the support member 126 so that the T shape corresponds.

  Next, as shown in FIG. 1, the wiring support member 136 is moved in the direction of arrow H with the insertion portion 144 of the wiring support member 136 inserted into the through hole 152 (see FIG. 1). As a result, the wiring support member 136 is attached to the support member 126, the protrusion 150 of the wiring support member 136 hits the first claw 132A, and the first claw 132A does not bend toward the second claw 132B.

  Further, the protrusion 156 of the wiring support member 136 is fitted into the lateral hole portion 152A of the through hole 152, and the movement of the wiring support member 136 attached to the support member 126 in the direction of arrow H is restricted (see FIG. 8). ).

  Next, as shown in FIG. 4C, one end of the electrical wiring 134 is moved in the direction of arrow G and attached to the connector 124 </ b> B of the detection member 124, and the other end of the electrical wiring 134 is attached to the connection member 164. Further, the wiring support member 136 and the wiring support member 160 support the electrical wiring 134 between one end and the other end.

  Thereby, the electrical wiring 134 and the detection member 124 are attached to the support member 126.

  When removing the detection member 124 from the support member 126, the detection member 124 is removed from the support member 126 by performing a process reverse to the process described above. Here, when removing the wiring support member 136 from the support member 126, the support member 126 can be moved in the direction of arrow H by pulling out the protrusion 156 from the lateral hole portion 152 </ b> A of the through hole 152.

  As described above, with the detection member 124 attached to the support member 126, the protrusion 150 of the wiring support member 136 is applied to the first claw 132A, and the first claw 132A is not bent toward the second claw 132B. By doing so, the positional deviation of the detection member 124 is suppressed without using a dedicated component.

  Further, by preventing the first claw 132A from bending toward the second claw 132B, the detection member 124 is prevented from moving in the direction of the arrow G, and the detection member 124 attached to the support member 126 is supported. The separation from the member 126 is suppressed.

  In addition, the wiring support member 136 is attached to and detached from the support member 126 by moving the wiring support member 136 in the arrow H direction intersecting the arrow G direction. For this reason, even if the wiring support member 136 is pushed in the arrow G direction by the first claw 132A of the detection member 124, the wiring support member 136 is prevented from being detached from the support member 126.

  Further, since the arrow G direction in which the detection member 124 moves and the arrow H direction in which the wiring support member 136 moves are orthogonal, the displacement of the detection member 124 attached to the support member 126 is effectively suppressed. The

  Further, by using the above-described electric component support structure 130 to attach the detection member 124 for detecting the rotational position of the rotating body 86 of the developing device 70, the detection accuracy of the rotating body 86 that passes or stops at a predetermined position can be improved. improves.

  Further, since the detection accuracy of the rotating body 86 that has passed or stopped at the determined position is improved, the accuracy of the stopping position of the developing roller 74 attached to the rotating body 86 with respect to the image holding body 62 is improved. This improves the quality of the output image.

  Further, when one end of the electrical wiring 134 is attached to the connector 124B, the displacement of the detection member 124 is suppressed even if the connector 124B is pushed in the direction of the arrow G.

  Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It is clear to the contractor. For example, in the above embodiment, the wiring support member 136 is attached to the support member 126 by moving the wiring support member 136 in the direction of the arrow H, and the protrusion 150 is applied to the first claw 132A. The projection may be applied to the first claw by attaching to the support member from a direction orthogonal to the first.

  In the above-described embodiment, the configuration in which the protrusion 150 and the first claw 132A contact with the detection member 124 and the wiring support member 136 attached to the support member 126 has been described. A gap may be provided between them.

DESCRIPTION OF SYMBOLS 10 Image forming apparatus 62 Image holding body 70 Developing apparatus 74 Developing roll 86 Rotating body 86A Rotating shaft 124 Detection member (an example of electric member)
124B connector (example of mounting part)
126 Support member 130 Support structure for electrical component 134 Electrical wiring 136 Wiring support member 152B Vertical hole (an example of guide part)

Claims (6)

A support member;
An electrical component that is supported by the support member and includes an attachment portion to which an electrical wiring is attached, and is movable in one direction while being attached to the support member;
The electrical wiring is supported, supported by the support member to be guided by a guide portion formed on the support member and moved in another direction intersecting the one direction, and supported by the support member. And a wiring support member arranged to come into contact with the electrical component when the electrical component is about to move in the one direction,
Support structure for electrical components with   The electrical component is removed from the support member when the electrical component attached to the support member is moved in the one direction in a state where the wiring support member is not attached to the support member. The support structure of the electrical component as described.   3. The electric component support structure according to claim 1, wherein the wiring support member is attached to and detached from the support member by being guided by the guide portion formed on the support member and moved in the other direction.   The electric component support structure according to claim 1, wherein the one direction and the other direction are orthogonal to each other. A plurality of developing rolls;
A plurality of the developing rolls are rotatably supported along the outer peripheral surface, and a rotating body that rotates around a rotation axis;
An electrical component supported by a support member by the electrical component support structure according to any one of claims 1 to 4, wherein the rotary body is detected in a state where the rotary body is stopped at a predetermined position. A detection member that
A developing device comprising: A developing device according to claim 5;
An image carrier on which an electrostatic latent image formed on the surface is developed by the developing device;
An image forming apparatus comprising:

Images