JP2021148922A - Additional unit, and image forming apparatus - Google Patents

Abstract

To solve the problem in which: the connection strength of an additional unit to a display is not sufficient.SOLUTION: A numeric keypad device is connected to a display operation unit, and comprises: a housing; keys that are provided on a front face of the housing; a key substrate 24 that is conducted by depression of the keys; a wiring board 25 that transmits an electric signal from the key substrate 24 to the display operation unit; a connection skeleton 41 that is fixed to the display operation unit; and one or more columns 33. Male screw parts of the columns 33 are fastened to parts to be fastened 24c, and the screws are fastened to female screw parts of the columns 33 so as to fix the laminated key substrate 24 and the wiring board 25 to the connection skeleton 41.SELECTED DRAWING: Figure 18

Description

The present invention relates to additional units and image forming devices.

The image forming apparatus is provided with a touch panel type display unit that displays an operation screen and receives an operation instruction such as execution of an image forming operation. An additional unit such as a numeric keypad can be attached to this display as an option.

By attaching the numeric keypad to the display unit, it is possible to expand the operation function of the display unit and improve its operability, such as omitting the operation of displaying the numeric keypad on the touch panel and enabling input of numbers. ..

For example, Patent Document 1 (Japanese Unexamined Patent Publication No. 2011-203371) discloses an invention in which a card reader unit is attached to a side surface of an operation panel unit of an image forming apparatus main body. The card reader unit can be connected to the operation panel unit by inserting the connecting part extending toward the operation panel unit into the operation panel unit or by fixing the mounting bracket fixed to the card reader unit to the side surface of the operation panel unit with screws. can do.

There is a problem that the connecting strength of the connecting member that connects the additional unit main body and the display unit is not sufficient.

In order to solve the above problems, the present invention is an additional unit connected to a display unit, which is conductive with a housing, a pressing portion provided on the front surface of the housing, and pressing of the pressing portion. A substrate 1, a second substrate that transmits an electric signal from the first substrate to the display unit, a connecting member fixed to the display unit, and a fixing unit are provided, and the fixing unit comprises. It is characterized in that the laminated first substrate and the second substrate are fixed to the connecting member.

According to the present invention, the connecting strength of the connecting member can be increased.

It is a perspective view of the image forming apparatus. It is a perspective view of the image forming apparatus in the state which connected the numeric keypad apparatus. It is a perspective view which shows the back side of the display operation part and the numeric keypad device. It is an exploded perspective view of the main body part of the numeric keypad. It is a perspective view which looked at the main body part from the back side. FIG. 5 is a perspective view showing a state in which the first lid member and the second lid member are removed from the main body of FIG. It is a perspective view of the state in which the connection part is connected to the main body part of FIG. It is a perspective view of the state which the support is attached to the main body part of FIG. It is a perspective view from the back side of the display operation part with the back cover removed. It is a perspective view of the state in which the connecting skeleton is connected to the display operation part of FIG. From the state of FIG. 10, it is a perspective view of the state in which the connecting skeleton and the main body are connected. It is a perspective view of the state which finished the wiring work of the main body part and the display operation part from the state of FIG. It is a perspective view of the state which attached the 1st lid member and the connecting cover from the state of FIG. It is a perspective view of the state which attached the back cover from the state of FIG. It is a perspective view which shows the metal frame which connects the connecting skeleton. It is a perspective view of the main body part and the back side of a connecting skeleton. It is a perspective view of the state where the rear exterior is removed from FIG. It is the figure which looked at the inside of the main body from the right side. It is a perspective view of the image forming apparatus of a different embodiment. FIG. 5 is a perspective view showing a display operation unit and a numeric keypad device in the image forming apparatus of FIG. It is a perspective view which shows the connection cover of the form which integrated the 1st lid member.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings. In each figure, the same or corresponding parts are designated by the same reference numerals, and the duplicated description thereof will be appropriately simplified or omitted. In the following description, as an example of the additional unit, a numeric keypad device connected to the operation display unit of the image forming apparatus will be described.

The image forming apparatus 1 shown in FIG. 1 includes a document conveying unit 2, an image forming unit that forms an image on paper as a recording medium based on image information, and a paper feeding unit 3 that supplies paper to the image forming unit. It is a copying machine provided with a paper ejection unit for discharging the paper on which an image is formed, a display operation unit 10 for inputting printing instructions and various settings, and the like. The image forming apparatus according to the present invention is not limited to a copying machine, and may be a printer, a plotter, a facsimile, a multifunction device thereof, or the like.

The display operation unit 10 as a display unit is provided on the front side of the right side surface of the image forming apparatus 1 main body via the support unit 11. The display operation unit 10 is a touch panel capable of displaying an operation screen or the like on the liquid crystal portion and touching the surface thereof to operate the screen.

As shown in FIG. 2, a numeric keypad device 20 as an additional unit is attached to the right side surface of the display operation unit 10. By attaching the numeric keypad device 20 to the display operation unit 10, it is possible to input keys such as the numeric keypad without displaying the key screen on the display operation unit 10. In addition, the operability of the user who is accustomed to the button operation can be improved. Therefore, the operation function of the display operation unit 10 can be expanded to improve its operability. Further, the front surface of the numeric keypad 20 is flush with the front surface of the display operation unit 10. As a result, the appearance of the numeric keypad device 20 can be improved, and the operability of the numeric keypad device 20 can be improved.

As shown in FIGS. 2 and 3, the numeric keypad device 20 has a main body portion 21 and a connecting portion 22 as an additional unit main body. The main body 21 is provided with a plurality of keys 28 (see FIG. 2) on the front surface side thereof. The main body 21 is a portion in which an operator presses a key 28 to input an electric signal corresponding to the pressed key 28 to the display operation unit 10.

The connecting portion 22 is a portion connected to the display operation unit 10. The connecting portion 22 has a connecting skeleton 41 (see FIG. 10) as a connecting member and a connecting cover 42. The connecting skeleton 41 is a member for connecting the main body 21 to the display operation unit 10, and is formed by processing, for example, a metal plate, and in the present embodiment, drawing processing is performed to increase the rigidity thereof. ing. The connecting cover 42 is a cover member that covers the connecting skeleton 41 from the outside.

By connecting the numeric keypad device 20 to the display operation unit 10 by the connecting unit 22, the numeric keypad device 20 can be moved together in accordance with the change in the posture of the display operation unit 10. Therefore, the wiring connected to the display operation unit 10 of the numeric keypad 20 does not require an extra length, or the wiring connected to the display operation unit 10 when the posture of the display operation unit 10 is changed is, for example, the display operation unit 10. It is possible to prevent the image forming apparatus from being caught between the housing and the housing of the image forming apparatus.

FIG. 4 is an exploded perspective view of the main members constituting the main body portion 21, and is a view seen from the back side of the main body portion 21. The X direction of the double-headed arrow in the figure is the front-back direction of the main body 21 (or the numeric keypad 20), the X1 direction is the front direction, and the X2 direction is the rear direction. Further, the Y direction of the double-headed arrow is the left-right direction of the main body 21 (or the ten-key device 20), the Y1 direction is the right direction, and the Y2 direction is the left direction. The Z direction is the vertical direction of the main body 21 (or the ten-key device 20), the Z1 direction is the upward direction, and the Z2 direction is the downward direction. Hereinafter, these directions are also simply referred to as front-back direction, left-right direction, and up-down direction.

As shown in FIG. 4, from the front side thereof, the main body portion 21 has a front exterior 23, a key substrate 24 as a first substrate, a wiring substrate 25 as a second substrate, a rear exterior 26, and a second. It mainly has a lid member 27 of 1 and a second lid member 40.

A plurality of keys 28 (see FIG. 2) as pressing portions are provided on the front surface side of the front exterior 23. The key 28 includes numbers 0 to 9, +,-, *, /, Enter, a print job start button, a stop button, and the like. However, the present invention is not limited to these, and necessary buttons can be appropriately included in the configuration.

The front exterior 23 has a plurality of holes (20 in this embodiment) 23b. Each key 28 is provided on the front side thereof at a position corresponding to each hole 23b. The front exterior 23 has a fastened portion 23a at positions corresponding to the four corners of the key substrate 24.

The key board 24 has electrical connection points at positions corresponding to the respective keys 28 or holes 23b. When the operator presses any of the keys 28, the corresponding electrical connection points become conductive and generate an electrical signal.

The key board 24 has holes 24a for fastening screws at its four corners. Further, the key substrate 24 has four fastened portions 24b and four fastened portions 24c. The fastened portions 24b and 24c are nut portions for fastening the screws.

The wiring board 25 is a board that transmits an electric signal generated by the key board 24 to the display operation unit 10. The wiring board 25 has a notch portion 25a, four hole portions 25b, four hole portions 25c, and a connection terminal 25d as a connected portion. The connection terminal 25d is provided in the notch 25a. The hole 25b is provided at a position corresponding to the fastened portion 24b of the key substrate 24, and the hole 25c is provided at a position corresponding to the fastened portion 24c.

The wiring board 25 is electrically connected to the key board 24 by the wiring 29.

The rear exterior 26 has an opening 26a for pulling out the main body side plug 30c (see FIG. 7) to the outside.

The first lid member 27 and the second lid member 40 are detachably provided with respect to the rear exterior 26 (the back surface side portion of the housing described later).

FIG. 5 is a perspective view of the main body 21 in which the above members are assembled as viewed from the back side. The fixed structure of each substrate will be described later. As shown in FIG. 5, the front exterior 23, the rear exterior 26, the first lid member 27, and the second lid member 40 form a housing 50 of the main body 21, and each board, wiring, and the like. Is stored in the housing 50.

Next, the wiring work for electrically connecting the wiring board 25 and the display operation unit 10 will be described with reference to FIGS. 6 and 7.

At the time of wiring work, first, the first lid member 27 on the back side of the main body 21 is removed. As shown in FIG. 6, by removing the first lid member 27, the wiring space A and the connection terminal 25d provided in the numeric keypad 20 as the electric wire storage portion are exposed to the outside, and the wiring work can be performed. Become in a state. Further, in FIG. 6, the second lid member 40 is removed. By removing the second lid member 40, the central portion of the key board 24 and the wiring board 25 is exposed, and the ten-key device 20 and the display operation unit 10 described later can be connected to each other.

As shown in FIG. 7, the connection portion 30 has a wiring 30a, a substrate side plug 30b provided on both sides of the wiring 30a, and a main body side plug 30c.

In the wiring work, the substrate side plug 30b is connected to the connection terminal 25d of the wiring board 25 with the first lid member 27 removed. Then, the main body side plug 30c is exposed from the opening 26a to the outside of the rear exterior 26. Finally, the extra wiring 30a is stored in the wiring space A. With the above, the wiring work on the main body 21 side is completed. Then, by connecting the main body side plug 30c to the display operation unit 10 (see FIG. 12), the wiring board 25 and the display operation unit 10 are electrically connected by the connection unit 30.

As described above, when the operator presses a key, the electrical connection points of the key board 24 are electrically connected to generate an electrical signal. The generated electric signal is transmitted to the wiring board 25 via the wiring 29 (see FIG. 4), and is transmitted from the wiring board 25 to the display operation unit 10 via the wiring 30a. The display operation unit 10 receives an electric signal and accepts the input of the pressed key.

Next, a work procedure for connecting the connecting portion of the numeric keypad 20 to the display operation unit 10 will be described. The main body 21 is in a state where the wiring work is completed, the main body side plug 30c is exposed to the outside (that is, the state shown in FIG. 7), and the main body side plug 30c is not connected to the display operation unit 10. Is.

First, as shown in FIG. 8, the four columns 33 are fixed to the key board 24 through the wiring board 25. That is, each support column 33 is inserted into the hole portion 25c (see FIG. 4) of the wiring board 25, and the male screw portion provided at one end of each support column 33 is fastened to the fastened portion 24b of the key board 24.

Next, the connection work on the display operation unit 10 side is performed.

First, the back cover 12 (see FIG. 3) of the display operation unit 10 is removed to expose the back side of the display operation unit 10 as shown in FIG.

As shown in FIG. 15, the display operation unit 10 is, from the front side thereof, a liquid crystal panel, a metal panel holding frame 13 for holding the liquid crystal panel, a main board 14, and a metal for holding the main board 14. A frame 15 made of metal, a fixing frame 16 (see FIG. 9) for fixing the display operation unit 10 to the support portion 11, and the like are provided. Note that FIG. 15 does not show the housing of the display operation unit, the liquid crystal panel, or the fixed frame 16.

Next, as shown in FIGS. 10 and 15, the connecting skeleton 41 is fixed to the frame 15. Specifically, a plurality of screws 90 are fastened to the holes of the frame 15 via the holes provided in the connecting skeleton 41. As a result, the connecting skeleton 41 and the frame 15 are fixed. By fixing the connecting skeleton 41 to the high-strength portion of the display operating unit 10, that is, the metal frame 15, the connecting strength of the connecting unit 22 to the display operating unit 10 can be increased.

Then, as shown in FIGS. 11 and 16, the screws 90 are fastened to the nuts of the columns 33 through the holes 41a of the connecting skeleton 41. As a result, the connecting skeleton 41 is fixed to the main body 21. That is, the main body 21 is connected and fixed to the display operation unit 10 via the connecting skeleton 41. For convenience, the description of the wiring 30a and the main body side plug 30c is omitted in FIG. 11, and the description of the wiring 30a is omitted in FIG. 16 (and FIG. 17 described later), but the wiring 30a and the main body side plug 30c are shown in FIG. It is in the state of 7.

Next, as shown in FIG. 12, the main body side plug 30c is connected to the display operation unit 10, and the wiring board 25 and the display operation unit 10 are electrically connected.

Then, as shown in FIG. 13, the connecting cover 42 is attached to the connecting skeleton 41, and the screws 90 are fastened at four points. Further, the first lid member 27 is attached to the rear exterior 26.

Finally, as shown in FIG. 14, the display operation unit 10 is attached to the back cover 12. By attaching the connecting cover 42 and the first lid member 27 to the numeric keypad 20, the opening to the outside of the main body 21 can be made as small as possible.

As described above, the numeric keypad device 20 can be connected to the display operation unit 10.

Further, the operation of removing the numeric keypad 20 from the display operation unit 10 is performed in the reverse procedure of the above. First, the back cover 12 is removed from the display operation unit 10 and the connecting cover 42 is removed from the numeric keypad 20 by releasing the fastening with the screws 90. Then, the first lid member 27 is removed to bring about the state shown in FIG. Next, the main body side plug 30c is pulled out from the display operation unit 10, and the screw 90 that connects the connecting skeleton 41 and the support column 33 is released. As a result, the main body 21 is removed from the connecting skeleton 41, the side of the display operation unit 10 is in the state of FIG. 10, and the side of the main body 21 is in the state of FIG. The display operation unit 10 side then releases the screw 90 that connects the connecting skeleton 41 and the frame 15, and removes the connecting skeleton 41 (see FIG. 9). Finally, by attaching the back cover 12 by fastening the screws, the display operation unit 10 is returned to its original state. The side of the main body 21 is removed by releasing the fastening of the support column 33 to the key board 24 (see FIG. 7), and the board side plug 30b is pulled out to remove the connecting portion 30 (see FIG. 6). Finally, the first lid member 27 and the second lid member 40 are attached to the rear exterior 26 to reach the state shown in FIG.

Next, the fixed structure of each member of the main body and the fixed structure with the connecting skeleton will be described in more detail.

As shown in FIGS. 17 and 18, the screws 90 are fastened to the four fastened portions 23a provided on the front exterior 23 via the key substrate 24. That is, the key board 24 is fixed to the front exterior 23 at its four corners. Then, the screws 90 are fastened to the four fastened portions 24b provided on the key board 24 via the wiring board 25. That is, the wiring board 25 is fixed to the key board 24 at its four corners. In this way, the key board 24 is fixed to the front exterior 23 at the four corners, and the wiring board 25 is fixed to the fixed key board 24 at the four corners. Therefore, each of the stacked substrates is securely fixed to the housing of the main body 21.

Further, as described above, the male screw portions on one end side (lower side in FIG. 18) of each support column 33 penetrate the wiring board 25 and are fastened to the fastened portion 24c of the key board 24 at four points. That is, the support column 33 is fixed to the key board 24 and the wiring board 25. Then, the screw 90 is fastened to the nut portion on the other end side (upper side in FIG. 18) of the four columns 33 via the connecting skeleton 41. That is, the connecting skeleton 41 is fixed to the support column 33. As described above, the support column 33 and the screw 90 are fixing members for fixing the laminated key board 24, the wiring board 25, and the connecting skeleton 41, and the support column 33 and the screw 90 form the fixing portion 51. ..

As described above, by fixing the connecting skeleton 41 to the two laminated substrates, the connecting strength between the connecting skeleton 41 and the main body 21 can be increased, and the load rigidity of the connecting portion 22 with respect to the key operation. Can be enhanced. That is, even when the operator presses the key 28 and a load is applied to the numeric keypad device 20 from the front direction to the rear direction, the connecting portion 22 can support the load, and the connecting portion 22 is deformed due to insufficient rigidity. And the position shift of the numeric keypad device 20 can be prevented.

Further, as described above, the two laminated substrates are securely fixed to the housing of the main body 21, and the connection strength of the connecting skeleton 41 to the housing of the main body 21 can be increased.

In particular, in the present embodiment, as shown in FIG. 18, the central position of the key board 24 in the vertical direction (which is also the longitudinal direction of the key board 24) is set to line D1, and the vertical direction of the wiring board 25 (also in the longitudinal direction of the wiring board 25). If the central position of (there is) is the line D2, the connecting skeleton 41 is provided so as to face the central positions D1 and D2. Further, the columns 33 provided at two positions in the vertical direction are provided so as to sandwich the central positions D1 and D2. That is, fixed positions of the connecting skeleton 41 with respect to the key board 24 or the wiring board 25 are provided on both sides of the central positions D1 and D2. As a result, the main body 21 can support the load on the central side in the vertical direction, so that the connecting strength of the connecting portion 22 to the main body 21 can be further increased.

Further, by adopting a highly rigid metal connecting skeleton 41 as a member for connecting the display operation unit 10 and the main body 21, the rigidity of the connecting portion 22 can be increased. Further, by bridging the connecting skeleton 41 between the main body 21 and the display operation unit 10, the surface having the largest area of the main body 21 (the surface not the side surface) and the surface having the largest area of the display operation unit 10 It can be connected to (a surface that is not a side surface). Therefore, the strength of connection of the numeric keypad device 20 to the display operation unit 10 can be increased as compared with the case where the main body 21 and the display operation unit 10 are connected to each other or at least one of the side surfaces.

Due to the height of the support column 33, the connecting skeleton 41 does not interfere with the housing portion on the back side of the display operation unit 10, and the main body 21 and the display operation unit 10 are placed further rearward (upper side in FIG. 17). Can be bridged. Further, as shown in FIG. 15, the connecting skeleton 41 also has a stepped structure in which the heights of the portion fixed to the frame 15 and the bridge portion are different.

Next, the layout of the main body 21 will be described with reference to FIGS. 17 and 18.

The key board 24 arranges electrical connection points at positions corresponding to the keys 28 (see FIG. 2) arranged on the front side of the main body 21, and provides electrical connection points corresponding to each key 28 when pressed. It is necessary to make it conductive. That is, the key board 24 needs to be arranged corresponding to the range in which the key 28 is arranged.

Conventionally, since the substrate of the main body 21 is a single substrate, the area is large. On the other hand, in the present embodiment, the key substrate 24 and the wiring substrate 25 are separated and arranged so as to be overlapped with each other. As a result, the key board 24 can be made smaller than before. Then, as shown in FIGS. 17 and 18, the key board 24 is arranged closer to the lower side of the front exterior 23, in other words, the lower end of the key board 24 (the other end of the key board 24 in the longitudinal direction). By arranging the space A adjacent to the lower end of the front exterior 23, a space A in which the members are not arranged can be provided on the upper side of the main body 21 in the housing. Then, this portion is used as a wiring space A for wiring work and storing excess wiring. As a result, the work of inserting / removing the plug 30b on the substrate side and accommodating the wiring 30a can be performed using this space, and the workability is improved. Further, the surplus wiring 30a can be stored in the wiring space A, and the main body 21 can handle a plurality of wirings having different lengths (see FIG. 7). The key board 24 needs to be arranged on the front side of the main body 21 due to its function. Therefore, the key board 24 is arranged on the front side of the main body 21, and the wiring board 25 is arranged on the rear side.

Further, in the present embodiment, the wiring board 25 is aligned with the upper end of the key board 24. In other words, the upper end of the wiring board 25 (which is also one end of the wiring board 25 in the longitudinal direction of the key board 24) is arranged adjacent to the upper end of the key board 24, and the wiring board 25 is placed above and below the main body 21. It is located on the center side of the direction. As a result, as described above, the central position D2 of the wiring board 25 can be arranged between the columns 33, and the connecting strength of the connecting portion 22 can be increased.

Further, as shown in FIG. 18, due to the central arrangement of the wiring board 25, the main body 21 is directed toward the rear exterior 26 from above to below (which is also the longitudinal direction of the key board 24 and is from the left to the right in the figure). An inclined surface 26b that is inclined in a direction of reducing the thickness (downward in the figure) can be formed. That is, by arranging the wiring board 25 on the upper side, the thickness on the lower side of the main body 21 can be reduced, so that the inclined surface 26b can be formed.

When the display operation unit 10 is placed on the upper surface of the image forming apparatus and the surface of the display operation unit 10 is inclined from the upper side to the lower side (see FIG. 20a), the front surface and the main body portion of the display operation unit 10 are provided by providing the inclined surface 26b. The front surface of the 21 can be aligned, the appearance of the numeric keypad 20 can be improved, and the operability thereof can be improved.

Further, as shown in FIG. 17, the wiring board 25 is provided with a notch portion 25a for inserting the board side plug 30b. As a result, the substrate side plug 30b can be arranged on the lower side (right side in the drawing) of the main body portion 21, and the wiring space A can be provided wider. That is, by providing the notch portion 25a, it is possible to achieve both the above-mentioned central arrangement of the wiring board 25 and the securing of the wiring space.

Further, the notch portion 25a is on the right side of the center position in the left-right direction of the wiring board 25 (the side opposite to the center position in the connection direction of the numeric keypad device 20 with respect to the display operation unit 10 and the front side in FIG. 17). Is placed in. As a result, the connection position of the substrate side plug 30b can be arranged at a position farther from the connection position of the main body side plug 30c. Therefore, it is possible to improve the workability of inserting / removing the plug 30b on the substrate side and storing the wiring 30a. Further, the depth of the cutout portion 25a is set so that a part of the substrate side plug 30b is exposed from the connecting skeleton 41 when the substrate side plug 30b is connected to the wiring board 25. As a result, the workability of the insertion / removal operation of the substrate side plug 30b with respect to the wiring board 25 is improved. Further, by making the notch portion 25a the minimum necessary size, it is possible to prevent the rigidity of the wiring board 25 from being impaired as much as possible. Therefore, it is possible to prevent the support rigidity of the connecting portion 22 described above from being impaired as much as possible.

As described above, by arranging each member in the housing of the main body 21, it is possible to obtain the above-mentioned effect of securing the wiring space and increasing the rigidity of the connecting portion 22, or to improve the appearance of the numeric keypad 20. At the same time, the main body 21 can be made as small as possible.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

In the above embodiment, the case where the numeric keypad device 20 is fixed to the display operation unit 10 by the connecting unit 22 has been described. However, the numeric keypad device 20 of the present embodiment may be placed on the image forming device without being connected by the connecting portion 22.

For example, as shown in FIG. 19, in the image forming apparatus 1 of the present embodiment, the display operation unit 10 is provided in the center of the front surface side of the image forming apparatus. The display operation unit 10 can change the inclination of the image forming apparatus 1 main body.

The numeric keypad device 20 is placed on the upper surface of the main body of the image forming device 1 and is arranged adjacent to the display operation unit 10. In this case, the ten-key device 20 is mounted on the image forming apparatus 1 with the connecting portion 22 not attached and the second lid member 40 attached to the back surface side (see FIG. 5). That is, the back surface of the housing formed by the rear exterior 26, the first lid member 27, and the second lid member 40 serves as a mounting surface for the image forming apparatus.

At the time of wiring work, the first lid member 27 of the numeric keypad device 20 is removed, and the substrate side plug 30b (see FIG. 7) is connected to the wiring board 25. Then, the wiring 30a is inserted into the hole 27a (see FIG. 5) of the first lid member 27, and the first lid member 27 is closed with the main body side plug 30c and a part of the wiring 30a exposed to the outside. Be done.

As shown in FIG. 20A, the exposed wiring 30a (see the hatched portion in the figure) passes through the inside of the image forming apparatus 1 main body from the back side of the display operation unit 10 and from the right side of the display operation unit 10. It is exposed to the outside of the image forming apparatus 1 again and is connected to the main body portion 21. As shown in FIG. 20B, by providing the wiring 30a with a sufficient length, it is possible to cope with the posture change of the display operation unit 10.

In the present embodiment, the main body side plug 30c has an L shape having a connecting portion extending in the insertion / extraction direction and a portion extending in the vertical direction from the connecting portion. As a result, when the posture of the display operation unit 10 is changed, the main body side plug 30c is less likely to be caught by the numeric keypad device 20, and the main body side plug 30c can be prevented from being damaged.

In the above embodiments, the ten-key device 20 is not equipped with the connecting portion 22 (state of FIG. 5) and the ten-key device 20 is attached with the connecting portion 22 and connected to the display operation unit 10 (state of FIG. 14). ), The first lid member 27 is commonly used to cover the back side of the numeric keypad 20, but the present invention is not limited to this. That is, as shown in FIG. 21, the connecting cover 42 may be provided with a portion 42a corresponding to the first lid member 27. In this case, when the connecting portion 22 is attached to the numeric keypad 20 and connected to the display operation unit 10, the first lid member 27 is not attached to the rear exterior 26, and the connecting cover 42 is attached to the first lid member 27. Can cover the part corresponding to. In this case, since it is not necessary to attach the first lid member 27 to the main body 21 by itself with the second lid member 40 removed from the rear exterior 26, the first lid member 27 and the second lid The member 40 can be formed as an integral member.

1 Image forming device 10 Display operation unit (display unit)
20 numeric keypad device (additional unit)
21 Main body (additional unit main body)
22 Connecting part 23 Front exterior 24 Key board (first board)
25 Wiring board (second board)
25a Notch 26 Rear exterior 26b Inclined surface 27 First lid member 28 Key (pressing part)
30 Connection part 33 Support (fixing member)
40 Second lid member 41 Connecting skeleton (connecting member)
50 Housing 51 Fixing part 90 Screw (fixing member)
A Wiring space (electric wire storage)
Center position of D1 key board D2 Center position of wiring board

Japanese Unexamined Patent Publication No. 2011-203371

Claims (11)

An additional unit connected to the display
With the housing
A pressing portion provided on the front surface of the housing and
A first substrate that conducts by pressing the pressing portion and
A second substrate that transmits an electric signal from the first substrate to the display unit, and
The connecting member fixed to the display unit and
With a fixed part,
An additional unit in which the fixing portion fixes the laminated first substrate, the second substrate, and the connecting member. It further has a connecting part that electrically connects the display part and the second substrate.
The second substrate has a notch and
The additional unit according to claim 1, wherein the second substrate is connected to the connection portion at the notch portion. The additional unit according to claim 2, wherein the cutout portion is formed on the side opposite to the display unit side from the central position of the second substrate in the connection direction with respect to the display unit. The additional unit according to any one of claims 1 to 3, wherein the connecting member is arranged so as to face the central position in the longitudinal direction of the first substrate. The additional unit according to any one of claims 1 to 4, wherein the connecting member is arranged so as to face the central position in the longitudinal direction of the second substrate. The additional unit according to any one of claims 1 to 5, wherein one end of the second substrate is provided adjacent to one end of the first substrate in the longitudinal direction of the first substrate. .. 6. The sixth aspect of the invention, wherein in the longitudinal direction of the first substrate, the housing has an inclined surface on the back surface thereof that is inclined in a direction that reduces the thickness of the housing from one side to the other. Additional unit. The additional unit according to any one of claims 1 to 7, wherein one end of the first substrate in the longitudinal direction is provided adjacent to the end of the housing in the direction. The additional unit according to claim 8, wherein the housing has an electric wire accommodating portion on one side in the longitudinal direction of the first substrate. It is provided detachably from the back surface side portion of the housing, and further has a lid member that constitutes a part of the housing in the mounted state on the back surface side portion.
The connecting member is detachably provided,
The addition according to any one of claims 1 to 9, wherein the back surface side portion of the housing and the lid member form a mounting surface for an image forming apparatus with the connecting member removed and the lid member attached. unit. With the display unit
An image forming apparatus for attaching / detaching the additional unit according to any one of claims 1 to 10 to / from the display unit.

Images