JP6520230B2 - Electrical connection structure and image forming apparatus - Google Patents

Description

  The present invention relates to an electrical connection structure and an image forming apparatus.

  An adapter mounting structure is provided in which an adapter fixing portion is provided outside the protector provided with a harness insertion portion inside and which fixes an adapter for fixing the connector to the protector, wherein the adapter slides and fits in the adapter fixing portion A side guide rail is provided, and the adapter is provided with an adapter side guide rail that slides and fits on the protector side guide rail, and either an adapter fixing portion or an adapter is provided with a guide groove along the sliding direction, either of which There is known an adapter mounting structure provided with a positioning rib which is inserted into the guide groove at the other to position and guide the adapter at a regular position of the adapter fixing portion (Patent Document 1).

JP, 2013-143832, A

  SUMMARY OF THE INVENTION An object of the present invention is to provide an electrical connection structure and an image forming apparatus capable of attaching a connector to a substrate easily and at a regular position in a connector connecting operation at which a worker is blinded.

In order to solve the problem, the electrical connection structure according to claim 1 is:
A substrate on which elements and terminals are disposed on the first surface;
A first frame provided opposite to the first surface and holding the substrate;
Holding one end a connector for connection is movably engaged to said first frame has a grip portion which projects beyond the second surface opposite the first surface of the substrate to the terminals of the substrate A connecting member,
A second frame covering the second surface of the substrate;
One end of the grip portion of the connection member protrudes from the outer surface of the second frame,
It is characterized by

The invention according to claim 2 is the connection device according to claim 1 in which
A guide guide is formed on the connection member, and a guide rail is formed on the first frame for moving by engaging the guide formed on the connection member.
It is characterized by

The invention according to claim 3 is the connection device according to claim 1 or 2 , wherein
The connection member has a housing portion for housing the connector, and a slit portion for receiving the entrance of the terminal is formed eccentrically to the entrance direction of the terminal at one end side of the housing portion.
It is characterized by

The invention according to claim 4 is the electrical connection structure according to any one of claims 1 to 3 ;
The connection member is composed of a plurality of types of connection members having guide portions for guiding connection lines extending from the rear ends of the plurality of types of connectors in different directions.
It is characterized by

In order to solve the above-mentioned subject, the image forming apparatus according to claim 5 is
Feeding means for containing and feeding the recording medium;
An image forming unit that forms a toner image including an image carrier and a developing device that forms a toner image;
The electrical connection structure according to any one of claims 1 to 4 , which is disposed above the sheet feeding means and below the image forming unit.
A transfer unit as a power-supplied member for transferring the toner image obtained by the development of the developing device to the recording medium;
And fixing means for fixing the image transferred to the recording medium by the transfer means.

According to the invention as set forth in claim 1 or 2 , the connector can be easily attached to the substrate at the regular position in the connector connecting operation which is blind to the operator.
According to the third aspect of the present invention, it is possible to prevent the mounting direction of the connector on the connecting member from being reversed.
According to the fourth aspect of the present invention, it is possible to suppress the contact of the high-voltage cables close to each other and fix the drawing direction.
According to the fifth aspect of the present invention, the connector can be easily attached to the substrate at the regular position in the connector connecting operation at which the worker is blinded while suppressing the height of the entire image forming apparatus.

FIG. 2 is a schematic cross-sectional view showing an internal configuration of the image forming apparatus 1; FIG. 3 is an exploded perspective view of a power supply substrate 110, a first frame 130, and a second frame 120. (A) is the disassembled perspective view which looked at the arrangement | positioning side of the electrical connection structure 100, (b) is a disassembled perspective view which shows the state to which the power supply board 110 and the 1st frame 130 were fixed. It is a perspective view which shows the state in which the connection member 140 was attached to the 1st frame 130. FIG. It is a perspective view which shows the state in which the electrical connection structure 100 was attached to the housing | casing on the front side of the housing | casing F, and showing it. It is an enlarged perspective view which shows the guide rail part with which the connection member 140 of the 2nd frame 130 is engaged. (A) is a perspective view of the 1st connection member 140A which is one of the connection members 140, (b) is each arrow line view. (A) is a perspective view of the 3rd connection member 140C which is one of the connection members 140, (b) is each arrow line view. It is a perspective view which shows the state in which the connection member 140 was movably engaged with the guide rail part 133 of the 1st frame 130. As shown in FIG. It is a top view which shows the state in which the connection member 140 was engaged with the guide rail part 133 of the 1st frame 130 so that movement was possible. FIG. 10 is a schematic cross-sectional view showing a state in which the connection member 140 is movably engaged with the guide rail portion 133 of the first frame 130. (A) is a cross-sectional schematic diagram which cross | intersects the moving direction of the electrical connection structure 100, (b) is a cross-sectional schematic diagram of a moving direction.

Next, the present invention will be described in more detail by way of embodiments and specific examples with reference to the drawings, but the present invention is not limited to these embodiments and specific examples.
Moreover, in the description using the following drawings, it should be noted that the drawings are schematic, and that the ratio of each dimension is different from the actual one, and is necessary for the explanation to facilitate understanding. The illustration other than the members is appropriately omitted.

(1) Overall Configuration and Operation of Image Forming Apparatus FIG. 1 is a schematic sectional view showing an internal configuration of an image forming apparatus 1 according to the present embodiment.
The overall configuration and operation of the image forming apparatus 1 will be described below with reference to the drawings.

  The image forming apparatus 1 is configured to include a control device 10, a sheet feeding device 20, a photosensitive unit 30, a developing unit 40, a transfer device 50, a fixing device 60, and an electrical connection structure 100. On the upper surface (Z direction) of the image forming apparatus 1, a discharge tray 1a is formed in which the sheet P on which an image is recorded is discharged and stored.

  The control device 10 includes an image forming apparatus control unit 11 that controls the operation of the image forming apparatus 1, a controller unit 12 that prepares image data according to a print processing request, and an exposure control unit 13 that controls lighting of the exposure device LH. Have.

  The controller unit 12 converts print information input from an external information transmission apparatus (such as a personal computer) into image information for forming a latent image, and outputs a drive signal to the exposure apparatus LH at a preset timing. . The exposure apparatus LH of the present embodiment is configured of an LED head in which a plurality of light emitting elements (LEDs: Light Emitting Diodes) are linearly arranged along the main scanning direction.

At the bottom of the image forming apparatus 1, a sheet feeding device 20 is provided. The sheet feeding device 20 includes a sheet stacking plate 21, and a plurality of sheets P as recording media are stacked on the upper surface of the sheet stacking plate 21. The sheet P stacked on the sheet stacking plate 21 and whose position in the width direction is determined by the restriction plate (not shown) is pulled out in the lateral direction (X direction) by the sheet extracting portion 22 one sheet at a time from the upper side. The sheet is conveyed to the nip portion of the pair 23.
Above the sheet feeding device 20, a second sheet feeding device 20A is provided. The second sheet feeding device 20 </ b> A conveys the sheet P drawn by the sheet drawing unit 25 to the nip portion of the registration roller pair 23 through the sheet conveyance path 27.

  The photosensitive unit 30 is provided in parallel with each other above the sheet feeding device 20 (in the Z direction), and includes a photosensitive drum 31 as an image holding member that is rotationally driven. The charging roller 32, the exposure device LH, the developing unit 40, the primary transfer roller 52, and the cleaning blade 34 are disposed along the rotational direction of the photosensitive drum 31. A cleaning roller 33 for cleaning the surface of the charging roller 32 is disposed opposite to and in contact with the charging roller 32.

The developing unit 40 has a developing housing 41 in which a developer is accommodated. In the developing housing 41, a developing roller 42 disposed opposite to the photosensitive drum 31, and a pair of augers 44 for stirring and transporting the developer to the developing roller 42 side at the lower back side of the developing roller 42, 45 are arranged. A layer regulating member 46 for regulating the layer thickness of the developer is disposed close to the developing roller 42.
Each of the developing units 40 is configured in the same manner except for the developer contained in the developing housing 41, and forms toner images of yellow (Y), magenta (M), cyan (C) and black (K) respectively. .

  The surface of the rotating photosensitive drum 31 is charged by the charging roller 32, and an electrostatic latent image is formed by the latent image forming light emitted from the exposure device LH. The electrostatic latent image formed on the photosensitive drum 31 is developed as a toner image by the developing roller 42.

  The transfer device 50 includes an intermediate transfer belt 51 on which the toner images of the respective colors formed on the photosensitive drums 31 of the respective photosensitive unit 30 are multiply transferred, and the toner images of the respective colors formed on the respective photosensitive units 30 as the intermediate transfer belt. A primary transfer roller 52 that sequentially transfers (primary transfer) to 51, and a secondary transfer roller 53 that collectively transfers (secondary transfer) toner images on the intermediate transfer belt 51 onto the sheet P. There is.

  The electrical connection structure 100 is disposed above the second sheet feeding device 20A (Z direction) and below the photosensitive unit 30 and the developing unit 40 (−Z direction), and the charging roller 32, the developing roller 42, and the primary transfer roller 52. Voltage is applied to the secondary transfer roller 53 and the like.

  Each color toner image formed on the photosensitive drum 31 of each photosensitive unit 30 is a primary image as an example of a power-supplied body to which a predetermined transfer voltage is applied from the electrical connection structure 100 controlled by the image forming apparatus control unit 11. The electrostatic transfer (primary transfer) is sequentially performed on the intermediate transfer belt 51 by the transfer roller 52 to form a superimposed toner image on which the respective color toners are superimposed.

  The superimposed toner image on the intermediate transfer belt 51 is conveyed to a region (secondary transfer portion T) in which the secondary transfer roller 53 is disposed as the intermediate transfer belt 51 moves. When the superimposed toner image is conveyed to the secondary transfer portion T, the sheet P is supplied from the sheet feeding device 20 to the secondary transfer portion T in accordance with the timing. Then, a predetermined transfer voltage is applied from the electrical connection structure 100 controlled by the image forming apparatus control unit 11 to the secondary transfer roller 53 as an example of the power-supplied body, and sent out from the registration roller pair 23, and the conveyance guide The multiple toner images on the intermediate transfer belt 51 are collectively transferred onto the sheet P guided by the above.

  The residual toner on the surface of the photosensitive drum 31 is removed by the cleaning blade 34 and collected in a waste developer storage portion. The surface of the photosensitive drum 31 is recharged by the charging roller 32. Incidentally, the residue which can not be completely removed by the cleaning blade 34 and is attached to the charging roller 32 is captured and accumulated on the surface of the cleaning roller 33 which rotates in contact with the charging roller 32.

  The fixing device 60 includes a heating module 61 and a pressure module 62, and a pressure contact area of the heating module 61 and the pressure module 62 forms a fixing nip portion N (fixing area).

The sheet P on which the toner image has been transferred in the transfer device 50 is conveyed to the fixing device 60 via the conveyance guide in a state where the toner image is not fixed. The sheet P conveyed to the fixing device 60 is fixed in a toner image by the action of pressure bonding and heating by the pair of heating modules 61 and the pressure module 62.
The sheet P on which the fixed toner image is formed is discharged from the discharge roller pair 69 to the discharge tray 1 a on the upper surface of the image forming apparatus 1 through the conveyance roller pair 68.

(2) Electrical connection structure (2.1) Overall configuration Fig. 2 is an exploded perspective view of the power supply substrate 110, the first frame 130, and the second frame 120, and Fig. 3 is a connecting member for the second frame 130. FIG. 4 is a perspective view showing a state in which the electrical connection structure 100 is attached to the housing F. FIG. 5 is a perspective view showing a state in which the electrical connection structure 100 is attached to the housing F. It is a perspective view shown located in the front side of body F.
Hereinafter, the entire configuration of the electrical connection structure 100 according to the present embodiment will be described with reference to the drawings.

As shown in FIG. 2, the power supply substrate 110 is a transformer that generates a voltage to be supplied to the photosensitive unit 30, the developing unit 40, the primary transfer roller 52, and the secondary transfer roller 53 on the lower surface 110a as the first surface. Elements such as a transformer), a resistor, and a capacitor (capacitor) and an output terminal are arranged.
The upper surface 110b as the second surface of the power supply substrate 110 is formed in a rectangular shape by an insulator so as to have a larger shape in plan view than the upper surface 110b of the power supply substrate 110 in order to prevent creeping discharge. It is held by the second frame 120.
The lower surface 110a of the power supply substrate 110 is supported by a first frame 130 that forms the upper surface side of the sheet conveyance path 27 of the second sheet feeding device 20A (see FIG. 1).

As shown in FIG. 3, the first frame 130 is disposed on the bottom side (the −Z direction) of the housing F. A connector for connecting the output terminal (see FIG. 10B) of the power supply substrate 110 to the primary transfer roller 52 as a power receiver and the secondary transfer roller 53 on one end side (-Y direction) of the second frame 130 A connecting member 140 holding 150 is engaged.
The connecting member 140 is composed of a first connecting member 140A, a second connecting member 140B, and a third connecting member 140C having different shapes of connector holding portions according to the type (150A, 150B, 150C) of the connector 150. In the following description, any one of the first connection member 140A, the second connection member 140B, and the third connection member 140C will be described as the connection member 140 as necessary.

The upper surface 130a side of the first frame 130 has a recess 131 corresponding to the cross-sectional shape of the sheet conveyance path 27 (see FIG. 3), and the power supply substrate 110 has the upper surface 110b supported by the first frame 120. The element disposed on the lower surface 110a of the housing is accommodated (see FIG. 4).
As shown in FIG. 4, the electrical connection structure 100 attached to the housing F is a second frame 120 formed in a larger shape in plan view than the upper surface 110 b of the power supply substrate 110 at the upper side (Z direction). It covers so as to separate the photosensitive unit 30, the developing unit 40, and the power supply substrate 110 which are covered and disposed above (in the Z direction).

  When the image forming apparatus 1 is located on the front side (Y direction) opposite to the output terminal of the power supply substrate 110, the output terminal and the connector 150 are not visible (see FIG. 5).

(2.2) Connection Structure FIG. 6 is an enlarged perspective view showing a guide rail portion engaged with the connection member 140 of the first frame 130, and FIG. 7 (a) is a first connection which is one of the connection members 140. FIG. 8A is a perspective view of the third connection member 140C which is one of the connection members 140. FIG. 8B is a view of each of the members 140A.
Hereinafter, the connection structure of the electrical connection structure 100 according to the present embodiment will be specifically described with reference to the drawings.

As shown in FIG. 6, slit-like guide rail portions 132, 133, 134 are formed on the upper surface 130 a of the first frame 130.
In the guide rail portion 132, guide grooves 132a and 132b having an angled shape in cross section are formed extending in the depth direction (Y direction) of the image forming apparatus 1, and a guide guide 146A of a first connection member 140A described later is movably engaged. United.
Similarly, in the guide rail portions 133 and 134, guide grooves 133a, 133b, 134a and 134a having an angled sectional view are formed corresponding to the guide guides 146B and 146C of the second connection member 140B and the third connection member 140C, respectively. It is formed extending in the depth direction (Y direction) of the device 1.

As shown in FIG. 7A, the first connection member 140A has an accommodation portion 142A which is erected from the bottom surface 141A and accommodates the connector 150A, and the accommodation portion 142A passes the inserted connector 150A. And an elastically deformable fixing portion 143A for fixing.
As shown by arrow A in FIG. 7B, a slit portion 144A for receiving the entry of the output terminal provided on the power supply substrate 110 is formed eccentrically in the entry direction of the output terminal on one end side of the housing portion 142A. (See e in the figure).

  As shown by arrows B and C in FIG. 7B, on the other end side of the first connection member 140A, the cable 151A as a connection line extending from the rear end of the connector 150A is guided backward (-Y direction) A guide portion 145A is formed.

As shown by arrows A, C, and E in FIG. 7B, the guide of the first connection member 140A engaged with the guide grooves 132a and 132b of the guide rail portion 132 of the first frame 130 on the bottom surface 141A. Guide 146A is formed.
As shown by the arrow D in FIG. 7B, the height of the rear end side (-Y direction) of the accommodation portion 142A of the first connection member 140A is a height that protrudes upward (Z direction) relative to the accommodation portion 142A. The holding part 147A which has is formed (refer h in the figure).

FIGS. 8A and 8B show the configuration of the third connection member 140C provided corresponding to the other connector 150C, but in the same manner as the first connection member 140A except for the position of the guide portion 145C. It is configured.
In the third connection member 140C, as shown by arrows B and C in FIG. 8B, the guide portion 145C is formed in a direction different from that of the first connection member 140A.

(3) Operation of Electrical Connection Structure FIG. 9 is a perspective view showing a state in which the connection member 140 is movably engaged with the guide rail portion 133 of the first frame 130, and FIG. 10 is a view of the first frame 130. FIG. 11 is a plan view showing a state in which the connecting member 140 is movably engaged with the guide rail portion 133. FIG. 11 is a state in which the connecting member 140 is movably engaged with the guide rail portion 133 of the first frame 130. FIG. 12A is a schematic cross-sectional view intersecting the moving direction of the electric connection structure 100 according to this embodiment, and FIG. 12B is a schematic cross-sectional view in the moving direction.

The electrical connection structure 100 according to the present embodiment includes a second frame 120 that supports the upper surface 110b of the power supply substrate 110 having elements disposed on the lower surface 110a and has a larger shape in plan view than the upper surface 110b. Connecting member 140 for holding the first frame 130 for holding the lower surface 110a of the power supply substrate 110, and the connector 150 for connecting the output terminal of the power supply substrate 110, the primary transfer roller 52 as a power supply and the secondary transfer roller 53 It consists of
The connecting member 140 is movably engaged with the first frame 130, and a gripping portion 147 gripped when moving the connecting member 140 is formed to project from the upper surface of the first frame 130.

As shown in FIG. 10, when the connectors 150A, 150B, 150C are connected to the output terminals of the power supply substrate 110, the connection members 140A, 140B, 140C move in the moving directions of the grips 147A, 147B, 147C. Are regulated to be at the same position (Y1-Y1 in the figure).
In addition, on the upper surface of the second frame 120, there is provided an arrow clearly indicating the moving direction corresponding to the position of each of the connecting members 140A, 140B, 140C.

  Therefore, when it is the front side (Y direction) of the image forming apparatus 1 and is located on the opposite side of the output terminal of the power supply substrate 110, the output terminal and the connector 150 are not visible but the second frame The grip portion 147 of the connection member 140 formed so as to protrude from the upper surface of the connector 120 can be visually recognized, and the assembly operation can be smoothly performed, and the power supply substrate 110 and the connector 150 can be electrically connected reliably. In addition, it can be checked whether the connector connection work has been completed correctly.

  As shown in FIG. 11, when the connection member 140 is moved and the connector 150 is connected to the output terminal of the power supply substrate 110, the edge 141 a of the bottom surface 141 of the connection member 140 is on the upper surface of the second frame 130. The movement is restricted by coming into contact with the formed convex portion 130a (see the arrow in FIG. 11), and the connector 150 can be prevented from invading into the element side of the power supply substrate 110.

At one end side of the housing portion 142 for housing the connector 150 of the connection member 140, a slit portion 144 for receiving the entry of the output terminal provided on the power supply substrate 110 is formed eccentrically in the entry direction of the output terminal.
Therefore, it is possible to prevent the mounting direction of the connector 150 to the housing portion 142 from being reversed.

At the other end side of the connection member 140, a guide portion 145 for guiding a cable 151 as a connection line extending from the rear end of the connector 150 backward (in the -Y direction) is formed. The first connection member 140A and the third connection member 140C are formed at different positions so as to guide the cables 151 in different directions.
Therefore, the contact between the adjacent cables to which the high voltage is supplied can be suppressed, and the drawing direction can be fixed.

In the image forming apparatus 1 according to the present embodiment, a sheet feeding device 20 is provided at the bottom, and a second sheet feeding device 20A is provided above the sheet feeding device 20.
Then, above the second sheet feeding device 20A, an electrical connection structure 100 having a power supply substrate 110 having elements disposed on the lower surface with respect to the image forming apparatus 1 is disposed. 30, the developing unit 40 is disposed.
According to the electrical connection structure 100 according to the present embodiment, the connector 150 can be easily connected to the power supply substrate 110 at the regular position in the connector connection operation where a blind spot from the operator is achieved while suppressing the height of the entire image forming apparatus 1. Can be attached to

DESCRIPTION OF SYMBOLS 1 ... Image forming apparatus 10 ... Control apparatus 20 ... Paper feeding apparatus 30 ... Photosensitive body unit 40 ... Development unit 50 ... Transfer apparatus 60 ... Fixing apparatus 100 ... Electric Connection structure 110: power supply substrate 110a: lower surface 110b: upper surface 120: second frame body 130: first frame body 131: recessed portion 132: guide rail portion 132a ··· .. Guide groove
140, 140A, 140B, 140C ... connection member 142, 142A ... accommodation portion 143A ... fixed portion
144, 144A ... Slit part
145, 145A, 145C145 ... guiding part 146A, 146B ... guiding
147, 147A ... gripping portion 150, 150A, 150B, 150C ... connector
151, 151A ... Cable

Claims (5)

A substrate on which elements and terminals are disposed on the first surface;
A first frame provided opposite to the first surface and holding the substrate;
Holding one end a connector for connection is movably engaged to said first frame has a grip portion which projects beyond the second surface opposite the first surface of the substrate to the terminals of the substrate A connecting member,
A second frame covering the second surface of the substrate;
One end of the grip portion of the connection member protrudes from the outer surface of the second frame,
Electrical connection structure characterized by A guide guide is formed on the connection member, and a guide rail is formed on the first frame for moving by engaging the guide formed on the connection member.
The electrical connection structure according to claim 1, characterized in that: The connection member has a housing portion for housing the connector, and a slit portion for receiving the entrance of the terminal is formed eccentrically to the entrance direction of the terminal at one end side of the housing portion.
The electrical connection structure according to claim 1 or 2 , characterized in that: The connection member is composed of a plurality of types of connection members having guide portions for guiding connection lines extending from the rear ends of the plurality of types of connectors in different directions.
The electrical connection structure according to any one of claims 1 to 3 , characterized in that: Feeding means for containing and feeding the recording medium;
An image forming unit that forms a toner image including an image carrier and a developing device that forms a toner image;
The electrical connection structure according to any one of claims 1 to 4 , which is disposed above the sheet feeding means and below the image forming unit.
A transfer unit as a power-supplied member for transferring the toner image obtained by the development of the developing device to the recording medium;
Fixing means for fixing the image transferred to the recording medium by the transfer means;
An image forming apparatus characterized by

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