JPH10309844A - Electric/electronic control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate bad effect that makes noise enter a device because of a long cable by a method wherein a connector is taken off and a base board holding member is opened with center at a first rotation fulcrum and on the other hand, it is opened with center at a second fulcrum in the direction where a cable is not pulled, when the inner operational condition is to be confirmed. SOLUTION: A control base board 15 to which a flat cable 30 is connected at the external section is attached to a base board holding member 20 and projection sections 20a, 20b are provided to both sides of a lower part thereof. The left side projection section 20a is engaged with a fitting hole (a) of an attaching auxiliary plate 19 and right side projection section 20b is engaged with a fitting hole (b) of a bracket 24. A first rotation fulcrum is formed on each of the engagement positions. In terms of the attaching auxiliary plate 19, projection sections 19a, 19b are engaged with fitting holes (c), (d) of a bracket 25, respectively and a second rotational fulcrum is formed on each of the engagement positions. When a component is exchanged, the base board holding member 20 is opened with center at the first rotational fulcrum. When the inner operational condition is confirmed, it is opened with center at the second rotational fulcrum in a direction that a flat cable 30 is not pulled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric / electronic control device such as an image forming apparatus such as a copying machine, a printer, a facsimile, and a multifunction peripheral thereof.

[0002]

2. Description of the Related Art Conventionally, a drive transmission mechanism for transmitting rotation from a drive source to an electric / electronic control device of this type, for example, a copying machine, as shown in FIG. 2, a plate-shaped substrate holding member 3 is attached to a support member (not shown) outside the drive transmission mechanism 2 so as to be openable and closable about pivot points 3a and 3b on both lower sides thereof. A control board 4 is mounted outside the control board 4, and a plurality of cables 5 are connected around the control board 4 via connectors 5a.

[0003] For example, when replacing the components of the drive transmission mechanism 2, the rear exterior cover (not shown) is opened,
The connector 5a was detached and the substrate holding member 3 was removed, and the substrate holding member 3 was opened as shown by a chain line in FIG. In order to check the internal operation state of the device main body 1, after opening the rear exterior cover, the board holding member 3 was removed and the board holding member 3 was opened with the connector 5a connected.

By the way, in such a copying machine, if the cable 5 is connected so as to go around from below the control board 4, for example, the cable 5 does not need to be so long.
It was possible to open and close the substrate holding member 3 even while the device was connected to the control substrate 4.

However, recently, a copier or the like is provided with a plurality of control boards in accordance with the digitization thereof. For example, as shown in FIG. 7, a basic control board held by a board holding member 3 on the back side of the apparatus main body 1 is provided. In addition to the above, there is another type in which another control board 7 is provided in a reading device 6 provided on the upper part, and the control boards 4 and 7 far apart from each other are connected by a cable 8.

In such a copying machine, as shown by a dashed line in FIG.
When 7 is connected, when the substrate holding member 3 is opened while the cable 9 is connected, the opening angle of the substrate holding member 3 becomes small, so that it is difficult to confirm the internal operation state.
When the substrate holding member 3 is forcibly opened, stress is applied to the cable 9. Therefore, conventionally, the control board 4
The control boards 4 and 7 are connected using a relatively long cable 8 as shown by a solid line in FIG.

[0007]

However, in the prior art,
Since the length of the cable 8 is increased in this manner, there is a problem that noise is more likely to enter.

[0008]

Therefore, according to the first aspect of the present invention, a substrate holding member 20 is openably and closably supported in an apparatus main body 10 as shown in the following embodiments, and Holding the control board 15 by the member 20;
In an electric / electronic control device for connecting a cable such as a flat cable 30 to the control board 15 via a connector 35, the connector 35 is detached and the board holding member 20 is opened and closed in order to replace a component in the device body. The first rotation fulcrums A and B at the time and the second rotation fulcrums C and D when the substrate holding member 20 is opened and closed while the cable 30 is connected to check the internal operation state, It is provided on the member 20.

When replacing the components in the main body of the apparatus, the connector 35 is detached, and then the board holding member 20 is opened around the first pivot points A and B. On the other hand, when checking the internal operation state of the device main body, the board holding member 20 is opened around the second pivot points C and D in a direction in which the cable is not pulled.

According to a second aspect of the present invention, in the electric / electronic control device according to the first aspect, for example, a flat cable 30 is used as the cable by bending the flat cable 30 as shown in the following embodiments. The second rotation fulcrum C / D is provided substantially in parallel with e.

When the substrate holding member 20 is opened about the second pivots C and D, the flat cable 30
Is opened centering on the folding line e.

According to a third aspect of the present invention, in the electric / electronic control device according to the first or second aspect, for example, as in the following embodiment shown in FIG.
A first fixing member such as a mounting screw 18 to be removed when opening the substrate holding member 20 around B;
When there is a second fixing member such as a mounting screw 28 to be removed when opening the substrate holding member 20 about the rotation fulcrum C / D, the substrate holding member 20 is opened in any direction with the fixing member. Arrow 40 indicating that it is sometimes removed
A display such as 41 is provided.

The first rotation fulcrum A or B or the second rotation fulcrum A
When the substrate holding member 20 is opened around the rotation fulcrums C and D, the display is used to confirm the fixing material to be removed.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 5 is a schematic front view of a copying machine according to an embodiment of the present invention.

In the illustrated copying machine, an apparatus main body indicated by reference numeral 10 is placed on a paper storage table 11 with casters, and an automatic document feeder 12 is mounted on the upper side of the apparatus main body 10 in the figure.
A sorter 13 is attached to the left side.

When making a copy, the original is set, the original is fed into the apparatus main body 10 by the automatic document feeder 12, the image on the original is read by the reading device, and the recording unit charges, writes and develops. To form the read image on the photosensitive member. On the other hand, the sheet is appropriately and selectively sent to the recording unit from one of a sheet cassette provided in the apparatus main body 10 or a sheet cassette provided in multiple stages in the sheet storage table 11,
Then, the read image formed on the photoreceptor is transferred and recorded on paper. Then, after the recording image on the sheet is fixed by the fixing unit, the sheet is sequentially discharged to the sorter 13, where it is sorted and stacked.

In the illustrated copying machine, as shown in FIG. 1, a control board 15 is provided on the back side of the apparatus main body 10, and another control board 16 is provided, for example, in the reading device on the upper side. . The control board 15 is attached to the outside of the plate-shaped board holding member 20 with screws or the like. The substrate holding member 20 is a slightly horizontally long flat plate and has a substantially rectangular shape as a whole, but protrudes laterally from the lower left and right sides thereof to form protrusions 20a and 20b, and has an insertion hole 20c near the left protrusion 20a. Open. And the left protrusion 2
0a is engaged with the fitting hole a of the mounting auxiliary plate 19,
The mounting auxiliary plate 19 is mounted on the substrate holding member 20 by screwing the mounting screw (first fixing member) 18 below the lower side c.

The mounting auxiliary plate 19 is a plate material having a substantially triangular shape as a whole, and has projections 19a and 19b projecting in the oblique direction at two apexes, and the fitting hole a is provided at the remaining apex. An open bent piece 19c is formed.

In the board holding member 20 to which the mounting auxiliary plate 19 and the control board 15 are mounted, the right projection 20b is engaged with the fitting hole b of the bracket 24, and the projections 19a and 19b of the mounting auxiliary plate 19 are connected. The mounting auxiliary plates 19 are attached to the brackets 25 by engaging with the fitting holes cd of the other brackets 25 and screwing the mounting screws (second fixing members) 28 through the insertion holes 20c. Then, the substrate holding member 2
The engagement positions of the protrusions 20a and 20b of the No. 0 and the fitting holes a and b are defined as first rotation fulcrums A and B, which will be described later.
Projections 19a and 19b and fitting holes c and
The engagement position of d serves as second rotation fulcrums CD described later.

The right bracket 24 has an L shape,
A hook portion 24a for forming the fitting hole b is formed at the tip thereof. The left bracket 25 is formed by bending an elongated plate material, and forms a support plate portion 25a that rises substantially vertically in an L-shape and a mounting plate portion 25b that is inclined obliquely at approximately 45 degrees. Further, the bent portion 25 is provided at the upper end of the support plate portion 25a.
c, bent portions 25d are formed at the lower end of the mounting plate portion 25b, and the fitting holes c and 25 are formed in the bent portions 25c and 25d.
d are provided to face each other. The left and right brackets 24 and 25 are supported by base members (not shown) of the device main body 10, respectively.

In this manner, the board holding member 20 is mounted upright as shown by the dotted line in FIG. And, in the normal state, the closed state,
For example, it is attached to, for example, a bracket or a frame in the device main body 10 with a fixing screw. Then, the control board 15
Is connected to the connector 35 of the flat cable 30, for example.

The flat cable 30 has one end connected to a control board 16 in the reader through a connector (not shown).
As shown in FIG. 1, it is bent downward at a right angle on the way, and further bent along a fold line e at an angle of about 45 degrees, and the other end is connected to the control board 15 via the connector 35 as described above. Connecting. The fold line e of the flat cable 30 is provided so as to be located substantially parallel to the engagement position (second rotation fulcrum CD) between the protrusions 19a and 19b of the mounting auxiliary plate 19 and the fitting holes cd. It becomes.

Now, in the illustrated copying machine, the device body 10
When it becomes necessary to replace the components on the rear side, the operation is stopped, the rear exterior cover (not shown) is opened, the connector 35 is removed, and the fixing screw is removed, and the board holding member 2 is removed.
0, and after removing the mounting screw 18, the substrate holding member 20 is moved to the first rotation fulcrum AB as shown in FIG.
Is opened in the direction of the arrow X on the front side in the figure.

On the other hand, when it is necessary to check the internal operation state during the operation of the copying machine, similarly, after opening the rear exterior cover, remove the fixing screw with the flat cable 30 connected. The substrate holding member 20 is removed, and the mounting screw 28 is removed this time. Then, the board holding member 20 is slightly moved upward in the direction of the mounting plate portion 25b of the left bracket 25 to disengage the projection 20b from the fitting hole b of the right bracket 24.

Thereafter, as shown in FIG. 3, the substrate holding member 20 is opened in the direction in which the flat cable 30 is not pulled around the second rotation fulcrum C and D, that is, in the direction of the arrow Y which is diagonally short in the figure. At this time, the flat cable 30
Are opened around the folding line e with the opening operation of the substrate holding member 20.

In the illustrated copying machine, for example, FIG.
As shown in FIG.
A configuration in which, for example, a seal indicated by arrows 40 and 41 is attached next to the position 28 to indicate which mounting screw 18 or 28 should be removed when the substrate holding member 20 is opened in the X direction or the Y direction. Good to do. Thereby, when replacing the parts of the device main body 10 or when confirming the internal operation, the operator looks at the arrows 40 and 41 and sees which one of the mounting screws 18.2.
Find out if 8 should be removed.

For example, when replacing parts, the operator
Looking at the arrow 40, the X direction indicated by the arrow 40 is selected as the direction in which the substrate holding member 20 is opened, and the mounting screw 18 is removed to open in the direction. On the other hand, when confirming the internal operation, the Y direction is selected as the opening direction by looking at the arrow 41, and the mounting screw 28 is removed to open in the direction.

Note that this display method is not limited to the above-described sticking of a seal, but may be, for example, a method of directly engraving or printing on the substrate holding member 20. The display is not limited to the case where the opening / closing direction is indicated by an arrow, but may be indicated by a description or the like.

[0029]

Therefore, according to the first to third aspects of the present invention, when replacing a part in the apparatus main body, the connector is detached and the substrate holding member is opened around the first rotation fulcrum. When checking the internal operation state, the substrate holding member is opened in the direction in which the cable is not pulled around the second pivot point, so that it is not necessary to use a long cable as in the related art. The disadvantage that noise is likely to enter due to the long distance can be eliminated.

According to the second aspect of the present invention,
When the substrate holding member is opened around the second pivot point,
Since the flat cable is opened around the folding line, it is possible to prevent the flat cable from being damaged due to excessive stress being applied by pulling or twisting when the substrate holding member is opened.

According to the third aspect of the present invention,
When the substrate holding member is opened and closed, the fixing material to be removed can be seen by looking at the display, so that even an unskilled worker can properly remove the fixing material according to the contents of the maintenance without hesitation.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a structure for supporting a board holding member to which a control board is attached so as to be openable and closable in a copying machine according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state where the substrate holding member is opened in one direction about a first rotation fulcrum.

FIG. 3 is a perspective view showing a state where the substrate holding member is opened in another direction about a second rotation fulcrum.

FIG. 4 is a partially enlarged view of a portion where an arrow is provided beside a mounting screw of the substrate holding member.

FIG. 5 is a schematic front view of the copying machine.

FIG. 6 is a perspective view showing a conventional copying machine with its back side opened.

FIG. 7 is a perspective view illustrating an arrangement of a control board in another conventional copying machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Device main body 15 Control board 18 Mounting screw (1st fixing material) 20 Board holding member 28 Mounting screw (2nd fixing material) 30 Flat cable 35 Connector 40/41 Arrow (display) A / B 1st rotation fulcrum CD Second pivot point e Fold line

Claims (3)

[Claims] An electric / electronic control device for supporting a board holding member in an apparatus main body so as to be openable and closable, holding a control board with the board holding member, and connecting a cable to the control board via a connector. A first pivot point for opening and closing the board holding member by removing the connector to replace a component in the device body;
A second pivot point for opening and closing the substrate holding member with the cable connected to check the internal operation state,
An electric / electronic control device provided on the substrate holding member. 2. The electric / electronic control device according to claim 1, wherein a flat cable is bent and used as the cable, and the second rotation fulcrum is provided substantially in parallel with the bent line. 3. A first fixing member to be removed when opening the substrate holding member about the first rotation fulcrum, and a second fixing member to be removed when opening the substrate holding member about the second rotation fulcrum. 3. The electric / electronic control device according to claim 1, wherein when there is a fixing member, the fixing member is provided with an indication indicating that the substrate holding member is to be removed when the substrate holding member is opened in any direction. 4.