JP7396142B2 - Additional unit, image forming device - Google Patents

Description

The present invention relates to an additional unit and an image forming apparatus.

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

By attaching a numeric keypad device to the display, it is possible to expand the operation functions of the display and improve its operability, such as by omitting the operation of displaying the numeric keypad on the touch panel and making it possible to input 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. Connect the card reader unit 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 of the operation panel unit with screws. can do.

There has been a problem in that the connection strength of the connection member that connects the additional unit main body and the display section is not sufficient.

In order to solve the above-mentioned problems, the present invention provides an additional unit connected to a display section, which includes a housing, a push-down part provided on the front surface of the housing, and an electrical connection made when the push-down part is pressed. a second substrate that transmits an electrical signal from the first substrate to the display section, a connecting member fixed to the display section, and a fixing section, the fixing section comprising: The method is characterized in that the stacked first substrate and second substrate and the connecting member are fixed.

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

FIG. 1 is a perspective view of an image forming apparatus. FIG. 2 is a perspective view of the image forming apparatus with a numeric keypad connected thereto. FIG. 3 is a perspective view showing the back side of the display operation unit and the numeric keypad device. FIG. 3 is an exploded perspective view of the main body of the numeric keypad device. FIG. 3 is a perspective view of the main body section viewed from the back side. FIG. 6 is a perspective view of the main body of FIG. 5 with the first lid member and the second lid member removed. FIG. 7 is a perspective view of a state in which a connecting portion is connected to the main body portion of FIG. 6; FIG. 8 is a perspective view of a state in which a support is attached to the main body portion of FIG. 7; FIG. 3 is a perspective view of the display and operation unit from the back side with the back cover removed. 10 is a perspective view of a state in which a connecting skeleton is connected to the display operation section of FIG. 9. FIG. 11 is a perspective view of a state in which the connecting skeleton and the main body are connected from the state shown in FIG. 10. FIG. FIG. 12 is a perspective view of the state shown in FIG. 11 after completing the wiring work between the main body and the display/operation section. FIG. 13 is a perspective view of the state shown in FIG. 12 with the first lid member and the connecting cover attached. FIG. 14 is a perspective view of the state shown in FIG. 13 with a back cover attached. FIG. 3 is a perspective view showing a metal frame that connects the connecting skeletons. It is a perspective view of the back side of a main-body part and a connection frame|skeleton. FIG. 17 is a perspective view of FIG. 16 with the rear exterior removed. FIG. 3 is a view of the inside of the main body viewed from the right side. FIG. 3 is a perspective view of an image forming apparatus according to a different embodiment. 20 is a perspective view showing a display operation section and a numeric keypad device in the image forming apparatus of FIG. 19. FIG. It is a perspective view which shows the connection cover of the form which integrated the 1st lid member.

Embodiments according to the present invention will be described below with reference to the drawings. In each figure, the same or corresponding parts are denoted by the same reference numerals, and repeated explanations thereof will be simplified or omitted as appropriate. In the following description, a numeric keypad device connected to an operation display section of an image forming apparatus will be described as an example of an additional unit.

The image forming apparatus 1 shown in FIG. 1 includes a document transport section 2, an image forming section that forms an image on paper as a recording medium based on image information, and a paper feed section 3 that supplies paper to the image forming section. This copying machine includes a paper ejecting section that ejects paper on which an image has been formed to the outside, and a display operation section 10 that performs printing instructions and inputting various settings. Note that the image forming apparatus according to the present invention is not limited to a copying machine, but may be a printer, a plotter, a facsimile, or a multifunctional device thereof.

A display operation section 10 serving as a display section is provided on the front side of the right side of the main body of the image forming apparatus 1 with a support section 11 interposed therebetween. The display/operation unit 10 is a touch panel that displays an operation screen and the like on its liquid crystal portion and allows the screen to be operated by touching its surface.

As shown in FIG. 2, a numeric keypad device 20 as an additional unit is attached to the right side of the display operation section 10. By attaching the numeric keypad device 20 to the display/operation section 10, it becomes possible to input keys such as a numeric keypad without displaying a key screen on the display/operation section 10. Furthermore, it is possible to improve the operability for users who are accustomed to button operations. Therefore, it is possible to expand the operation functions of the display operation section 10 and improve its operability. Further, the front surface of the numeric keypad device 20 is flush with the front surface of the display operation section 10. Thereby, 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 includes a main body portion 21 as an additional unit main body and a connecting portion 22. The main body part 21 is provided with a plurality of keys 28 (see FIG. 2) on its front side. The main body section 21 is a section for inputting an electric signal corresponding to the pressed key 28 to the display operation section 10 when the operator presses the key 28 .

The connecting part 22 is a part connected to the display operation part 10. The connecting portion 22 includes a connecting skeleton 41 (see FIG. 10) as a connecting member and a connecting cover 42. The connection skeleton 41 is a member for connecting the main body part 21 to the display operation part 10, and is formed by processing a metal plate material, for example, and in this embodiment, it is subjected to a drawing process to increase its rigidity. ing. The connection cover 42 is a cover member that covers the connection skeleton 41 from the outside.

By connecting the numeric keypad device 20 to the display/operation unit 10 using the connecting portion 22, the numeric keypad device 20 can be moved together with the change in the posture of the display/operation unit 10. Therefore, extra length is not required for the wiring connected to the display/operation unit 10 of the numeric keypad device 20, and the wiring connected to the display/operation unit 10 when changing the posture of the display/operation unit 10 is, for example, It is possible to prevent the image forming apparatus from being caught between the image forming apparatus and the casing of the image forming apparatus.

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

As shown in FIG. 4, the main body part 21 includes, from the front side, a front exterior 23, a key board 24 as a first board, a wiring board 25 as a second board, a rear exterior 26, and a third board. It mainly includes one lid member 27 and a second lid member 40.

On the front side of the front exterior 23, a plurality of keys 28 (see FIG. 2) are provided as pressing parts. The keys 28 include numbers 0 to 9, +, -, *, /, Enter, and a print job start button and stop button. However, the configuration is not limited to these, and any necessary buttons can be included in the configuration as appropriate.

The front exterior 23 has a plurality of (20 in this embodiment) holes 23b. Each key 28 is provided on its front side at a position corresponding to each hole 23b. The front exterior 23 has fastened portions 23 a at positions corresponding to the four corners of the key board 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 key 28, the corresponding electrical connection point becomes conductive and generates an electrical signal.

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

The wiring board 25 is a board that transmits electrical signals generated by the key board 24 to the display operation section 10. The wiring board 25 has a notch 25a, four holes 25b, four holes 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 in the fastened part 24b of the key board 24, and the hole 25c is provided in the fastened part 24c at a corresponding position.

The wiring board 25 is electrically connected to the key board 24 by 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 removably attached to the rear exterior 26 (the rear side portion of the casing, which will be described later).

FIG. 5 is a perspective view of the main body section 21 assembled with the above members, viewed from the back side. Note that the fixing structure of each board 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 constitute a casing 50 of the main body 21, and each board, wiring, etc. is housed in the casing 50.

Next, wiring work for electrically connecting the wiring board 25 and the display/operation unit 10 will be explained using FIGS. 6 and 7.

At the time of wiring work, first, the first lid member 27 on the back side of the main body part 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 device 20 as a wire storage section are exposed to the outside, allowing wiring work to be performed. become a state. Moreover, in FIG. 6, the second lid member 40 is removed. By removing the second lid member 40, the central portions of the key board 24 and the wiring board 25 are exposed, making it possible to connect the numeric keypad device 20 and the display/operation unit 10, which will be described later.

As shown in FIG. 7, the connecting portion 30 includes a wiring 30a, a board-side plug 30b and a main body-side plug 30c provided on both sides of the wiring 30a.

In the wiring work, the board-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 to the outside of the rear exterior 26 through the opening 26a. Finally, the extra wiring 30a is stored in the wiring space A. With the above steps, the wiring work on the main body section 21 side is completed. Then, by connecting the main body side plug 30c to the display and operation section 10 (see FIG. 12), the wiring board 25 and the display and operation section 10 are electrically connected through the connection section 30.

As described above, when the operator presses a key, the electrical connection points on the key board 24 become conductive and an electrical signal is generated. The generated electrical signal is transmitted to the wiring board 25 via the wiring 29 (see FIG. 4), and from the wiring board 25 to the display/operation unit 10 via the wiring 30a. The display operation unit 10 receives electrical signals and inputs from pressed keys.

Next, a working procedure for connecting the connecting portion of the numeric keypad device 20 to the display operation section 10 will be described. Note that the main body section 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 section 10. It is.

First, as shown in FIG. 8, four pillars 33 are fixed to the key board 24 by passing through the wiring board 25. As shown in FIG. That is, each support 33 is inserted into the hole 25c (see FIG. 4) of the wiring board 25, and the male threaded portion provided at one end of each support 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 and operation section 10 is removed to expose the back side of the display and operation section 10, as shown in FIG.

As shown in FIG. 15, the display operation unit 10 includes, from the front side, a liquid crystal panel, a metal panel holding frame 13 for holding the liquid crystal panel, a main board 14, and a metal panel holding frame 13 for holding the main board 14. A frame 15 made of aluminum, a fixing frame 16 (see FIG. 9) for fixing the display operation section 10 to the support section 11, and the like are provided. Note that FIG. 15 does not show the housing of the display operation section, 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 holes in the frame 15 through holes provided in the connecting frame 41. Thereby, the connecting skeleton 41 and the frame 15 are fixed. By fixing the connecting frame 41 to a strong portion of the display/operation unit 10, that is, the metal frame 15, the connection strength of the connection unit 22 to the display/operation unit 10 can be increased.

Then, as shown in FIGS. 11 and 16, the screws 90 are passed through each hole 41a of the connecting frame 41 and fastened to the nut portion of each support column 33. Thereby, the connecting skeleton 41 is fixed to the main body part 21. That is, the main body section 21 is connected and fixed to the display operation section 10 via the connection skeleton 41. For convenience, the wiring 30a and the main body plug 30c are not shown in FIG. 11, and the wiring 30a is not shown in FIG. 16 (and FIG. 17, which will be described later). 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 section 10, and the wiring board 25 and the display/operation section 10 are electrically connected.

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

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

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

Further, the operation for removing the numeric keypad device 20 from the display operation section 10 is performed in the reverse order to the above. First, by releasing the screws 90, the back cover 12 is removed from the display operation section 10, and the connection cover 42 is removed from the numeric keypad device 20. Then, the first lid member 27 is removed and the state shown in FIG. 12 is achieved. Next, the main body side plug 30c is pulled out from the display/operation section 10, and the screws 90 connecting the connecting skeleton 41 and the support column 33 are unfastened. As a result, the main body section 21 is removed from the connecting frame 41, the display/operation section 10 side becomes the state shown in FIG. 10, and the main body section 21 side becomes the state shown in FIG. 8. The display/operation unit 10 then releases the screws 90 connecting the connecting frame 41 and the frame 15 and removes the connecting frame 41 (see FIG. 9). Finally, by attaching the back cover 12 by fastening the screws, the display and operation unit 10 is returned to its original state. On the main body part 21 side, the support 33 is unfastened from the key board 24 and removed (see FIG. 7), and the board side plug 30b is pulled out to remove the connection part 30 (see FIG. 6). Finally, the first lid member 27 and the second lid member 40 are attached to the rear exterior 26, resulting in the state shown in FIG. 5.

Next, the fixing structure of each member of the main body portion and the fixing structure with the connecting skeleton will be explained in more detail.

As shown in FIGS. 17 and 18, screws 90 are fastened to the four fastened portions 23a provided on the front exterior 23 via the key board 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 parts 24b provided on the key board 24 via the wiring board 25. In other words, 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 its four corners, and the wiring board 25 is fixed at its four corners to the fixed key board 24. Therefore, each of the superimposed substrates is securely fixed to the casing of the main body section 21.

Further, as described above, the male screw portion at one end of each support 33 (lower side in FIG. 18) passes through the wiring board 25 and is fastened to the fastened portion 24c of the key board 24 at four locations. That is, the support column 33 is fixed to the key board 24 and the wiring board 25. Then, screws 90 are fastened to the nut portions on the other end side (upper side in FIG. 18) of the four pillars 33 via the connecting skeleton 41. That is, the connecting skeleton 41 is fixed to the support column 33. As described above, the strut 33 and the screws 90 are fixing members that fix the stacked key board 24 and wiring board 25 and the connecting frame 41, and the strut 33 and the screws 90 constitute the fixing part 51. .

As described above, by fixing the connecting frame 41 to the two laminated substrates, the connection strength between the connecting frame 41 and the main body part 21 can be increased, and the load rigidity of the connecting part 22 against key operations can be increased. can be increased. In other words, even if a worker presses down the key 28 and a load is applied from the front to the rear on the numeric keypad device 20, the connecting portion 22 can support the load, and the connecting portion 22 is deformed due to lack of rigidity. This also prevents the numeric keypad device 20 from shifting its position.

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

In particular, in this embodiment, as shown in FIG. Assuming that the center position of 1) is a line D2, the connecting skeleton 41 is provided facing the center positions D1 and D2. Furthermore, support columns 33 are provided at two locations in the vertical direction so as to sandwich the center positions D1 and D2. That is, the fixing positions of the connecting skeleton 41 to the key board 24 or the wiring board 25 are provided on both sides of the central positions D1 and D2. Thereby, the main body part 21 can support the load at the center side in the vertical direction, so that the connection strength of the connecting part 22 to the main body part 21 can be further increased.

Further, by employing a highly rigid metal connection skeleton 41 as a member that connects the display operation section 10 and the main body section 21, the rigidity of the connection section 22 can be increased. In addition, by bridging this connecting frame 41 between the main body 21 and the display/operation unit 10, it is possible to connect the largest surface of the main body 21 (the surface that is not the side surface) and the largest surface of the display/operation unit 10. (a surface that is not a side surface) can be connected. Therefore, the connection strength of the numeric keypad device 20 to the display and operation section 10 can be increased compared to the case where the main body section 21 and the display and operation section 10 are connected side to side, or at least one side is connected at a side.

Note that due to the height of the column 33, the connecting frame 41 does not interfere with the casing part on the back side of the display/operation section 10, and the main body section 21 and the display/operation section 10 are connected at the rear side (upper side in FIG. 17). Can be bridged. Further, as shown in FIG. 15, the connecting frame 41 also has a stepped structure in which the height of the portion fixed to the frame 15 and the bridge portion are different.

Next, the layout of the main body section 21 will be explained using FIGS. 17 and 18.

The key board 24 has electrical connection points arranged at positions corresponding to each key 28 (see FIG. 2) arranged on the front side of the main body 21, and when each key 28 is pressed, the corresponding electrical connection point is connected. It is necessary to conduct. In other words, the key board 24 needs to be arranged corresponding to the range in which the keys 28 are arranged.

Conventionally, the substrate of the main body portion 21 was a single substrate, which resulted in a large area. On the other hand, in this embodiment, the key board 24 and the wiring board 25 are separated and arranged so that they are overlapped. Thereby, the key board 24 can be made smaller than before. As shown in FIGS. 17 and 18, by arranging the key board 24 closer to the lower side of the front exterior 23, in other words, the lower end of the key board 24 (the other longitudinal end of the key board 24) By arranging the member (also known as a member) at a position adjacent to the lower end of the front exterior 23, a space A where no member is arranged can be provided above the housing of the main body 21. This area was designated as a wiring space A for wiring work and for storing surplus wiring. Thereby, the work of inserting and removing the board-side plug 30b and storing the wiring 30a can be performed using this space, and the work efficiency is improved. Moreover, it becomes possible to store the surplus wiring 30a in the wiring space A, and the main body part 21 can accommodate a plurality of wirings having different lengths (see FIG. 7). Note that the key board 24 needs to be placed 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 part 21, and the wiring board 25 is arranged on the rear side.

Further, in this 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 (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 placed in the center of the direction. Thereby, as described above, the center position D2 of the wiring board 25 can be placed between the pillars 33, and the connection strength of the connection part 22 can be increased.

Furthermore, as shown in FIG. 18, due to the above-mentioned central arrangement of the wiring board 25, the main body part 21 is attached to the rear exterior 26 from above to below (which is also the longitudinal direction of the key board 24, and from the left to the right in the figure). It is possible to form an inclined surface 26b that is inclined in the direction of decreasing the thickness (downward in the figure). In other words, by arranging the wiring board 25 further upward, the thickness of the lower part of the main body part 21 can be reduced, so that the inclined surface 26b can be formed.

When the display operation section 10 is placed on the top surface of the image forming apparatus and its surface is inclined from the top to the bottom (see FIG. 20a), by providing the inclined surface 26b, the front surface of the display operation section 10 and the main body are 21 can be aligned, the appearance of the numeric keypad device 20 can be improved, and its operability can be improved.

Further, as shown in FIG. 17, the wiring board 25 is provided with a notch 25a into which a board-side plug 30b is inserted. As a result, the board-side plug 30b can be placed further down (on the right side in the figure) of the main body portion 21, and the wiring space A can be provided wider. That is, by providing the cutout portion 25a, it is possible to achieve both the above-described central placement of the wiring board 25 and the securing of wiring space.

The cutout portion 25a is located on the right side of the center position of the wiring board 25 in the left-right direction (the side opposite to the display and operation unit 10 from the center position of the numeric keypad device 20 in the connection direction to the display and operation unit 10, and on the near side in FIG. 17). will be placed in Thereby, the connection position of the board-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 and removing the board-side plug 30b and storing the wiring 30a. Further, the depth of the notch 25a is set so that when the board-side plug 30b is connected to the wiring board 25, a part of the board-side plug 30b is exposed from the connection skeleton 41. This improves the workability of inserting and removing the board-side plug 30b into and out of the wiring board 25. Further, by making the cutout 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 above-mentioned connecting portion 22 from being impaired as much as possible.

As described above, by arranging each member within the housing of the main body section 21, it is possible to secure the wiring space described above, increase the rigidity of the connecting section 22, or improve the appearance of the numeric keypad device 20. At the same time, the main body portion 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 changes can be made without departing from the gist of the present invention.

In the above embodiment, a case has been described in which the numeric keypad device 20 is fixed to the display operation section 10 by the connecting section 22. However, the numeric keypad device 20 of this embodiment may be placed on the image forming apparatus without being connected by the connecting portion 22.

For example, as shown in FIG. 19, in the image forming apparatus 1 of this embodiment, the display operation section 10 is provided at the center of the front side of the image forming apparatus. The display operation unit 10 can change its tilt with respect to the main body of the image forming apparatus 1.

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

During wiring work, the first lid member 27 of the numeric keypad device 20 is removed, and the board-side plug 30b (see FIG. 7) is connected to the wiring board 25. 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. It will be done.

As shown in FIG. 20A, the exposed wiring 30a (see the hatched area 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 again exposed to the outside of the image forming apparatus 1 and connected to the main body section 21 . As shown in FIG. 20(b), by providing the wiring 30a with a sufficient length, it is possible to cope with changes in the posture of the display/operation unit 10.

In this 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 from the connecting portion in a direction perpendicular to the connecting portion. Thereby, when changing the attitude of the display/operation unit 10, the main body side plug 30c is less likely to be caught on the numeric keypad device 20, and damage to the main body side plug 30c can be prevented.

In the above embodiment, the state in which the connecting portion 22 is not attached to the numeric keypad device 20 (the state shown in FIG. 5) and the state in which the connecting portion 22 is attached to the numeric keypad device 20 and connected to the display operation unit 10 (the state shown in FIG. 14) are described. ), the first lid member 27 is used in common to cover the back side of the numeric keypad device 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 part 22 is attached to the numeric keypad device 20 and connected to the display operation section 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. The corresponding part can be covered. In this case, since it is not necessary to attach the first lid member 27 alone to the main body 21 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 apparatus 10 Display operation section (display section)
20 Numeric keypad device (additional unit)
21 Main body (additional unit main body)
22 Connecting portion 23 Front exterior 24 Key board (first board)
25 Wiring board (second board)
25a Notch portion 26 Rear exterior 26b Inclined surface 27 First lid member 28 Key (pressing part)
30 Connection part 33 Support column (fixing member)
40 Second lid member 41 Connection skeleton (connection member)
50 Housing 51 Fixed part 90 Screw (fixing member)
A Wiring space (wire storage area)
D1 Center position of key board D2 Center position of wiring board

Japanese Patent Application Publication No. 2011-203371

Claims (11)

An additional unit connected to the display section,
A casing and
a push-down portion provided on the front surface of the housing;
a first substrate that becomes electrically conductive when the pressing part is pressed;
a second substrate that transmits an electrical signal from the first substrate to the display section;
a connecting member fixed to the display section;
A fixed part;
An additional unit characterized in that the fixing part fixes the stacked first and second substrates and the connecting member. further comprising a connection part that electrically connects the display part and the second substrate,
the second substrate has a notch,
The additional unit according to claim 1, wherein the second board is connected to the connection part at the cutout part. 3. The additional unit according to claim 2, wherein the notch is formed on a side opposite to the display section from a center position of the second substrate in a connection direction to the display section. The additional unit according to any one of claims 1 to 3, wherein the connecting member is arranged to face a 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 to face a 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 board is provided adjacent to one end of the first board in the longitudinal direction of the first board. . 7. In the longitudinal direction of the first substrate, the casing has an inclined surface on its back surface that is inclined in a direction that reduces the thickness of the casing from the one side toward the other side. additional units. 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 an end of the housing in that direction. 9. The additional unit according to claim 8, wherein the casing has an electric wire storage section on one side in the longitudinal direction of the first board. further comprising a lid member that is removably attached to the back side portion of the casing and constitutes a part of the casing when attached to the back side portion;
the connecting member is removably provided,
The addition according to any one of claims 1 to 9, wherein when the connecting member is removed and the lid member is attached, the rear side portion of the casing and the lid member constitute a mounting surface for the image forming apparatus. unit. comprising the display section,
An image forming apparatus in which the additional unit according to claim 1 is attached to and detached from the display section.

Images