JPH09167894A - Fixing structure of flat cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent removal of a flat cable from a connector by fixing a cover which can be mounted removably with respect to a barrier wall, e.g. a side plate or a housing, impeding the wiring of a flat cable to an opening and holding the flat cable between the outer edge part of cover and the inner edge part of opening and securing the flat cable in place. SOLUTION: An opening 300b large enough to pass a flat cable 600 is made through the side face of a housing 300, i.e., a barrier wall for the wiring of flat cable 600. The opening 300b is fixed with a cover 700 large enough to close the opening 300 removably from the housing 300a. The flat cable is held between the outer edge part of cover 700 and the inner edge part of opening 300b and securing in place. This structure prevents removal of the flat cable 600 from a connector thus preventing intrusion of foreign matter or dust into the housing 300a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat cable mounting structure for electrically coupling a drive circuit and a driven circuit thereof.

[0002]

2. Description of the Related Art In many devices used today, a means for electrically coupling a drive circuit composed of a power supply circuit board, a control circuit board, etc. and its driven circuit (motor drive circuit, etc.). As such, a flat cable formed by integrating a plurality of cables is widely used. In the case where a barrier such as a side plate and a case that obstructs the wiring of the flat cable intervenes in the middle of the wiring route of the flat cable, in the conventional device, the side plate and the case that obstruct the wiring are generally used. The method of laying the flat cable by circumventing the barrier or providing an opening for inserting the flat cable in the side plate or the housing is adopted.

[0003]

However, in the method of laying a flat cable by circumventing a barrier such as a side plate or a case which obstructs the former wiring, a long flat cable is required and its wiring route is required. When a moving path for a moving body such as a scanner that moves back and forth or a document table that moves up and down is provided, secondary measures such as prevention of interference between this moving body and the flat cable are required. However, there is a problem that increases the cost of equipment.

On the other hand, in the latter method in which the flat cable is wired by providing an opening for inserting the flat cable in the side plate or the casing, the driving circuit and the driven circuit can be connected at the shortest distance, and thus the flat Although the length of the cable may be short, foreign matter or dust may enter the driven circuit through the opening, or the inner edge of the opening may rub against the flat cable when the base of the driven circuit is a moving body. There is a problem that the flat cable is easily pulled out of the connector or damaged.

[0005]

In order to solve the above-mentioned problems, the present invention intervenes in the middle of a wiring path of a flat cable electrically connecting a driving circuit and its driven circuit. An opening having a size large enough to allow the flat cable to be inserted is provided in a barrier such as a side plate and a casing that obstructs the wiring of the flat cable, and the opening has a size to close the opening and is removable from the barrier. The opening cover is attached to the opening, and the flat cable is sandwiched and fixed by the outer edge portion of the opening cover and the inner edge portion of the opening.
Thus, by sandwiching and fixing the flat cable between the outer edge portion of the opening cover and the inner edge portion of the opening,
The shortest flat cable can be used so that the barrier and the flat cable do not rub against each other.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a front view showing an example of a document table of a page turning apparatus according to the present invention.
The binding manuscript 100 includes a manuscript support table 10 on the left and right of the manuscript table 1.
The front cover and the back cover (back cover) are fixedly supported by being sandwiched by the cover cover pressing plates 108a and 108b in a state of being opened on the sheets 1 and 102. Left and right document support table 10
1, 102 are vertically movably supported by two sets of link mechanisms (not shown).
Up-and-down movements of 1, 102 are transmitted to each of seven gears (not shown) via a drive shaft that rotates in synchronization with each link mechanism. As a result, each document support table 101, 102
The up-and-down motion of is converted into the rotating motion of each gear. Here, four gears directly connected to each link mechanism mesh with each other, and between them, three gears as idler gears are arranged so as to form a gear train. As a result, when either one of the left and right original document holders 101 and 102 moves up and down, the other original document holder is vertically moved in the opposite direction by the same amount as the movement amount of the one original document holder. The up and down movements of the document supporting bases 101 and 102 are performed by an external force, for example, an operation of an operator or an operation of pressing a bookbinding document 100 by a scanning unit (not shown).

An electromagnetic clutch (not shown) is connected to the drive shaft 104 via a gear train. When the electromagnetic clutch is turned on, the drive shaft is fixed via the gear train, whereby the drive shaft and each link mechanism are fixed together with each gear, and the left and right document support bases 101,
Since 102 cannot move vertically relative to each other, the left and right document support bases 101 and 102 are held in the attitude (vertical movement position) when the electromagnetic clutch is turned on.

The original table 1 is supported by a wire pulley mechanism (not shown) provided inside the housing 300a of the original table unit 300 so as to move up and down. As shown in FIG. 2, a motor 411 for driving the above wire pulley mechanism and a motor control board (wire controller) 400 for controlling the driving of the motor 411 are arranged. Therefore, in order to control the drive of the motor 411 of the original table unit 300, as shown in FIG. 2, the motor control board 400 disposed inside the housing 300a of the original table unit 300 and the original table unit Thirty
It is necessary to electrically connect the central control board 500 on the apparatus main body side, which is disposed outside the housing 300a of No. 0, with the flat cable 600 via the connectors 400a and 500a.

[0009] Here, the housing 300a is a wiring obstacle.
As described above, the method of wiring the flat cable 600 by bypassing the (barrier) requires a long flat cable, and a moving path of the document table 1 (moving body) that moves up and down is provided in the wiring path. Therefore, a secondary measure for preventing the interference between the document table 1 and the flat cable 600 is required, which causes a problem of increasing the cost of the apparatus.

The flat cable 6 is attached to the housing 300a.
The method of wiring the flat cable 600 by providing the opening 300b for inserting 00 is described in the central control board 500.
Since the (driving circuit) and its motor control board 400 (driven circuit) can be connected at the shortest distance, the length of the flat cable can be short, but on the other hand, inside the driven circuit (in the housing 300aa) through the opening 300b. Foreign matter or dust may enter, or the inner edge of the opening 300b and the flat cable 600 may rub against each other, so that the flat cable 600 may move to the connector 40.
There is a problem that it easily comes off or is damaged from 0a.

Therefore, in the first embodiment of the present invention, as shown in FIG.
As shown in FIG. 3, an opening 30 large enough to allow the flat cable 600 to be inserted through the side surface of the housing 300a serving as a barrier.
0b is provided, and an opening cover 700 having a size that closes the opening and is detachable from the housing 300a is attached to the opening 300b, and an outer edge portion of the opening cover 700 and an inner edge portion of the opening 300b are attached. The flat cable 600 is held and fixed. As a result, the motor control board 400 arranged inside the housing 300a of the document table unit 300 and the central control board 500 on the apparatus main body side arranged outside the housing 300a of the document table unit 300 can be shortest. The flat cable 60 that can be coupled using the flat cable 600 and is inserted through the opening 300b
Since 0 is sandwiched and fixed by the outer edge of the opening cover 700 and the inner edge of the opening 300b, the opening 30 of the housing 300a
Since the flat cable 600 can be wired so as not to rub against the inner edge of the document 0b, and the opening 300b of the housing 300a is covered by the opening cover 700, the original table unit 3
Foreign matter and dust are prevented from entering the inside of the case 300a of No. 00.

Here, when the flat cable 600 inserted through the opening 300b is directly held between the outer edge of the opening cover 700 and the inner edge of the opening 300b, the outer edge of the opening cover 700 and the inner side of the opening 300b are fixed. The flat cable 600 may be damaged or broken due to the holding pressure with the edge. Therefore, in the second embodiment of the present invention, as shown in FIG. 3, elastic members such as foam rubber are provided on the outer edge portion 700a of the opening cover 700 for holding and fixing the flat cable 600 and the inner edge portion 300c of the opening 300b. 4, a cable retainer 800 is provided at the outer edge of the opening cover 700 and a cable retainer 800 is provided at the inner edge of the opening 300b. The flat cable 600 inserted through the 300b is elastically pressed and held to be fixed.

By the way, in the above-mentioned equipment, in recent years,
In order to facilitate disassembly at the time of recycling after disposal, it is desired to reduce the use of fastening members such as screws as much as possible. Therefore, in the third embodiment of the present invention, the opening cover 700 for the housing 300a is provided.
As shown in FIG. 3 and FIG.
By sliding the opening cover 700 in a predetermined direction (here, the vertical direction in FIG. 5) with respect to the opening 300b of a, the tongue piece 700b which is a part of the outer edge of the opening cover 700 is slid.
And a part of the inner edge of the opening 300b is engaged and disengaged. At this time, the sliding direction of the opening cover 700 is
As shown in FIG. 5, the flat cable 600 is aligned with the pressing direction of the cable presser 800. According to this flat cable mounting structure, when mounting the opening cover 700 in the opening 300b, first, from the state shown in FIG.
The lower outer edge tongue 700b of the opening cover 700 is engaged with the lower inner edge of the opening 300b, and then FIG.
As shown in FIG. 5, after the opening cover 700 is slid in a predetermined direction (downward in FIG. 5) against the elasticity of the cable retainer 800, the pressing of the opening cover 700 is stopped, so that the elasticity of the cable retainer 800 is exerted. By the resilience,
As shown in FIG. 4, since the tongue piece 700b on the outer edge above the opening cover 700 is engaged with the inner edge above the opening 300b, the housing 300 can be used without using a fastening member such as a screw.
The opening cover 700 can be locked with respect to the opening 300b of a. Here, by performing an operation opposite to the operation at the time of attaching the opening cover 700 to the opening 300b,
The opening cover 700 can be easily removed from the opening 300b without using a tool such as a screwdriver.

[0014]

As described above, according to the present invention, the flat cable can be securely held and fixed by the opening of the housing and the opening cover, so that the flat cable can be prevented from coming off from the connector and can be inserted into the housing. Foreign matter and dust can be prevented from entering. Further, by holding the flat cable with the cable holder made of an elastic body, it is possible to prevent damage to the holding and fixing portion of the flat cable. Furthermore, by engaging and disengaging the opening of the housing and the opening cover using the elasticity of the cable retainer, the number of parts can be reduced, cost can be reduced, and at the time of assembly and maintenance, and
Workability at the time of waste recycling can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a document table unit of a bookbinding document as an embodiment of the present invention.

FIG. 2 is a schematic side view showing a first embodiment of a flat cable mounting structure in the document table unit.

FIG. 3 is a schematic perspective view showing second and third embodiments of the flat cable mounting structure.

FIG. 4 is a schematic cross-sectional view showing how the opening cover is attached to the opening of the housing in the second and third embodiments.

FIG. 5 is a schematic cross-sectional view showing one process of attaching or detaching the opening cover to / from the opening of the housing in the second and third embodiments.

[Explanation of symbols]

 1 Document Plate 100 Binding Document 101, 102 Document Support Plate 108a, 108b Cover Holding Plate 300 Document Plate Unit 300a Document Plate Unit Case 300b Case Opening 300c Opening Inner Edge 400 Motor Control Board 400a Motor Control Board Connector 411 motor 500 central control board 500a central control board connector 600 flat cable 700 opening cover 700a opening cover outer edge 700b opening cover tongue 800 cable retainer

Claims (3)

[Claims] 1. A case in which a barrier such as a side plate and a casing that interferes with the wiring of the flat cable is interposed in the middle of a wiring path of the flat cable that electrically connects the driving circuit and the driven circuit. In the flat cable mounting structure, an opening having a size large enough to allow the flat cable to pass therethrough is provided, and an opening cover having a size that closes the opening and detachable from the barrier is provided. A flat cable mounting structure, wherein the flat cable is clamped and fixed by an outer edge portion of the opening cover and an inner edge portion of the opening by mounting the flat cable in the opening. 2. The flat member according to claim 1, wherein elastic members made of foamed rubber are provided on an outer edge portion of the opening cover for holding and fixing the flat cable and an inner edge portion of the opening. Cable mounting structure. 3. A structure for attaching / detaching the opening cover to / from the barrier, wherein a part of an outer edge of the opening cover and a part of an inner edge of the opening are formed by sliding the opening cover with respect to the opening in a predetermined direction. 3. The flat cable mounting structure according to claim 2, wherein the opening cover is slidably engaged with and disengaged from, and the sliding direction of the opening cover is aligned with the pressing direction of the elastic member against the flat cable.