JP2011034346A - Electronic equipment, cable winding structure, and slide type structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce dead space and improve design property. <P>SOLUTION: Electronic equipment 1 is provided with: a first casing 4; a second casing 5 slidable to the first casing 4; a stepper roller 24 arranged in the first casing 4, and equipped with a large diameter section 31 and a small diameter section 32; a flexible cable 21 wound around the large diameter section 31, and equipped with a first section 21a extended from the inside of the first casing 4 to the inside of the second casing 5 and a second section 21b connected to the first section 21a, wound around a small diameter section 32, and extended to the inside of the first casing 4; and a driving part 25 that, when the second casing 4 slides in a direction of releasing the first section 21a, rotates the stepped roller 24 in a direction of winding up the first section 21a. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a technique related to a structure for winding a flexible cable.

  In recent years, there has been provided an electronic device that includes first and second housings stacked on top of each other and in which the second housing can slide with respect to the first housing.

  Patent Document 1 discloses a portable device that is slidable from a closed state in which a second housing covers the top surface of the first housing to an open state in which the top surface of the first housing is exposed. The portable device includes a mainspring unit that urges the second casing so as to change from the closed state to the open state.

  Patent document 2 is disclosing the electric power feeder accommodated in the state which wound the flat cable. This flat cable is divided into a flat cable for power supply and a flat cable for signal supply. The two cables are overlapped with the signal supply flat cable on the inside and the power supply flat cable on the outside.

JP 2007-159018 A JP 2004-48849 A

  By the way, in an electronic device in which the second housing can slide with respect to the first housing, a flexible cable extends between the first housing and the second housing. Such an electronic device is difficult to achieve in combination with a reduction in dead space and an improvement in design.

  That is, a relatively large opening through which the flexible cable is passed from the first housing is provided on the lower wall of the second housing that faces the first housing. In order to reduce the dead space, it is desirable to increase the sliding amount of the second housing relative to the first housing. However, if the sliding amount is increased, the opening of the lower wall of the second housing at the maximum sliding time A part will be exposed outside and design property will be impaired.

  In order to prevent the opening from being exposed and improve the design, it is necessary to form the opening in the lower wall of the second casing to be relatively small. For this purpose, it is necessary to increase the length of the flexible cable so that the flexible cable sufficiently follows the movement of the relatively small opening.

  However, if a long flexible cable is used, the flexible cable may be greatly bent when the second casing is slid, and the flexible cable may protrude from between the first casing and the second casing. . Therefore, in an electronic device using a long flexible cable, on the contrary, the slide amount cannot be made too large, resulting in an increase in dead space. The same applies to various sliding structures such as sliding doors of vehicles and refrigerators.

  The structure of Patent Document 1 is one in which one end portion of a wire wire is pulled by a spring spring and cannot be applied to a case where both end portions such as cables are connected to connectors. In the structure of Patent Document 2, since there is no urging force to wind the cable, the curvature of the cable at the time of accommodation increases. As a result, a large space is required to accommodate the cable in a wound state.

  An object of the present invention is to provide a cable winding structure, an electronic device, and a sliding structure that can realize a reduction in dead space and an improvement in design.

  An electronic device according to one embodiment of the present invention includes a first housing, a second housing that is slidable with respect to the first housing, and a large diameter provided in the first housing. A stepped roller having a portion and a small-diameter portion; a first portion that is wound around the large-diameter portion and extends from the first housing into the second housing; and the first portion. And a flexible cable having a second portion wound around the small-diameter portion and extending into the first housing, and when the second housing slides in a direction in which the first portion loosens. And a drive unit that rotates the stepped roller in a direction to wind up the first portion.

  A cable winding structure according to one aspect of the present invention is a cable winding structure for winding a flexible cable having a first portion and a second portion connected to the first portion, A stepped roller having a large-diameter portion around which the first portion is wound and a small-diameter portion around which the second portion is wound; and when the flexible cable moves in a direction in which the first portion is loosened, And a drive unit that rotates the stepped roller in a direction in which the portion 1 is wound up.

  A sliding structure according to one aspect of the present invention includes a first unit, a second unit that is slidable with respect to the first unit, and a large-diameter portion provided in the first unit. And a stepped roller having a small-diameter portion, a first portion that is wound around the large-diameter portion and extends from the first unit into the second unit, and the first portion. A flexible cable having a second portion wound around the small diameter portion and extending into the first unit, and when the second unit slides in a direction in which the first portion is loosened, And a driving unit that rotates the stepped roller in the direction of winding the first portion.

  According to the present invention, a reduction in dead space and an improvement in design can be realized.

The perspective view of the open state of the electronic device which concerns on the 1st Embodiment of this invention. FIG. 2 is a perspective view of the electronic device shown in FIG. 1 in a closed state. The top view which shows the flexible cable which concerns on the 1st Embodiment of this invention. The perspective view which shows the stepped roller which concerns on the 1st Embodiment of this invention. The perspective view which shows the stepped roller and flexible cable which concern on the 1st Embodiment of this invention. The perspective view which shows the stepped roller and flexible cable which were shown in FIG. Sectional drawing which follows the F7-F7 line | wire of the stepped roller and flexible cable shown in FIG. FIG. 2 is a cross-sectional view of the opened state of the electronic device shown in FIG. 1. FIG. 3 is a cross-sectional view of the electronic device illustrated in FIG. 1 in a closed state. The top view which shows the modification of the flexible cable which concerns on the 1st Embodiment of this invention. The perspective view which shows the modification of the drive part which concerns on the 1st Embodiment of this invention. Sectional drawing which shows the drive part which concerns on the 2nd Embodiment of this invention. Sectional drawing which shows the door closed state of the door structure which concerns on the 3rd Embodiment of this invention. Sectional drawing which shows the state which opened half of the door structure shown in FIG. Sectional drawing which shows the door opening state of the door structure shown in FIG. Sectional drawing which shows an example of the electronic device which is not provided with a stepped roller. Sectional drawing which shows another example of the electronic device which is not provided with a stepped roller.

(First embodiment)
1 to 9 disclose an electronic apparatus 1 according to a first embodiment of the present invention. The electronic device 1 is, for example, a relatively small portable electronic device, and a specific example is a personal digital assistant (PDA). The present invention is not limited to the above, and various electronic devices including smartphones, mobile communication devices, game machines, mobile phones, and the like, as well as relatively large electronic devices such as refrigerators. Is also widely applicable. Moreover, the electronic device 1 is an example of a slide structure according to the present invention.

  As shown in FIG. 1, the electronic device 1 includes a first unit 2 and a second unit 3. The first unit 2 is a main unit having an input function, for example. The second unit is a display unit having a display function, for example.

  As shown in FIGS. 8 and 9, the first unit 2 includes a first housing 4 formed in, for example, a flat box shape. The first housing 4 has an upper wall 4a, a lower wall 4b, and a peripheral wall 4c. The lower wall 4b is located at the bottom of the electronic device 1, and is a wall facing the desk surface when the electronic device 1 is used on the desk surface, for example. The upper wall 4a extends substantially horizontally with the lower wall 4b with a space between the upper wall 4a and the lower wall 4b. The upper wall 4a is provided with an input device (not shown) such as a keyboard and buttons. The peripheral wall 4c stands up with respect to the lower wall 4b and connects the edge of the lower wall 4b and the edge of the upper wall 4a.

  The second unit 3 includes a second housing 5 formed in, for example, a flat box shape. The second housing 5 has an upper wall 5a, a lower wall 5b, and a peripheral wall 5c. The lower wall 5 b faces the upper wall 4 a of the first housing 4. The upper wall 5a of the second casing 5 extends substantially horizontally with the lower wall 5b with a space between the lower wall 5b. The upper wall 5a is provided with an opening 5aa (see FIG. 1) for exposing the display screen, for example. The peripheral wall 5c stands up with respect to the lower wall 5b and connects the edge of the lower wall 5b and the edge of the upper wall 5a.

  As shown in FIGS. 8 and 9, the second housing 5 is slidably connected to the first housing 4 by a slide mechanism (not shown). The second housing 5 overlaps the first housing 4 and covers the upper wall 4a of the first housing 4 (the first state, see FIG. 9), and the first housing 4 It is possible to move between the open state (second state, see FIG. 8) in which the upper wall 4a of the first housing 4 is exposed.

  As shown in FIG. 8, the first housing 4 has a first end 7 and a second end 8. The first end 7 faces the second housing 5 in the open state. The second end portion 8 is located on the opposite side of the first housing 4 from the first end portion 7. A first opening 9 facing the second housing 5 is opened at the first end 7 of the upper wall 4a.

  On the other hand, the second housing 5 has a first end portion 11 and a second end portion 12. The second end 12 faces the first end 7 of the first housing 4 when in the open state. The first end 11 of the second housing 5 is located on the opposite side of the second housing 5 from the second end 12. A second opening 13 facing the first opening 9 of the first housing 4 is opened at the second end 12 of the lower wall 5b.

  As shown in FIG. 8, a first circuit board 15 is accommodated in the first housing 4. The first circuit board 15 is, for example, a main circuit board. A first connector 16 is mounted on the first circuit board 15. A second circuit board 17 is accommodated in the second housing 5. The second circuit board 17 is arranged in the second housing 5 so as to be biased toward the second end portion 12, for example. A second connector 18 is mounted on the second circuit board 17.

  As shown in FIG. 8, the flexible cable 21 extends between the first and second housings 4 and 5 through the first and second openings 9 and 13. As shown in detail in FIGS. 3 and 5, the flexible cable 21 is a flat cable formed in a U shape, for example. The flexible cable 21 includes a first portion 21a, a second portion 21b, and a connecting portion 21c, each formed in a flat shape.

  As shown in FIGS. 8 and 9, the first portion 21 a extends from the first housing 4 into the second housing 5 and moves greatly following the slide of the second housing 5. And has a relatively large length. The second portion 21b is a portion that always fits in the first housing 4, and is shorter in length than, for example, the first portion 21a. As shown in FIG. 3, the first portion 21a and the second portion 21b extend in the same direction. The connecting portion 21c extends in a direction orthogonal to the extending direction of the first portion 21a, and extends between the base end portion 21aa of the first portion 21a and the base end portion 21ba of the second portion 21b. Are connected. The first and second portions 21a and 21b are connected to each other via a connecting portion 21c.

  As shown in FIGS. 1 and 8, a cable winding structure 23 for winding the flexible cable 21 is provided in the first housing 4. As shown in FIG. 6, the cable winding structure 23 includes a stepped roller 24 and a drive unit 25.

  As shown in FIGS. 4 to 6, the stepped roller 24 includes a large diameter portion 31, a small diameter portion 32, a slope portion 33, and a central shaft portion 34. The large-diameter portion 31, the small-diameter portion 32, the slope portion 33, and the central shaft portion 34 are provided separately from each other in the axial direction of the stepped roller 24, and are positioned coaxially with each other.

  The large diameter portion 31 has the largest diameter among the stepped rollers 24, and the first portion 21 a of the flexible cable 21 is wound around the large diameter portion 31. A pair of flange portions 35 a and 35 b stand at both ends of the large diameter portion 31. The flange portions 35a and 35b are located on both sides of the first portion 21a of the flexible cable 21 wound around the large diameter portion 31, and guide the winding of the first portion 21a.

  As shown in FIG. 4, the large-diameter portion 31 is provided with a flat portion 36 in which a part of the surface of the large-diameter portion 31 is cut to form a flat surface in a part in the circumferential direction. The flat part 36 is formed over the entire width of the large diameter part 31, for example. A notch portion 37 is provided in a portion adjacent to the plane portion 36 in the flange portion 35 a located between the large diameter portion 31 and the slope portion 33. Thereby, the flat surface portion 36 of the large diameter portion 31 is smoothly connected to the slope portion 33. By forming the flat portion 36, the step between the large diameter portion 31 and the small diameter portion 32 is reduced. The plane portion 36 is not an essential component and can be omitted as appropriate.

  The small diameter portion 32 has a smaller diameter than the large diameter portion 31, and the second portion 21b of the flexible cable 21 is wound around the small diameter portion 32. The small diameter portion 32 functions as a mandrel that supports the second portion 21b. The slope portion 33 is provided between the large diameter portion 31 and the small diameter portion 32, and the diameter continuously decreases from the large diameter portion 31 toward the small diameter portion 32.

  As shown in FIG. 4, the central shaft portion 34 is adjacent to the large diameter portion 31 from the side opposite to the slope portion 33. Protrusions 38 are provided at the tip of the small diameter portion 32 and the tip of the central shaft portion 34, respectively. As shown in FIG. 1, these protrusions 38 are engaged with bearings 42 of a support portion 41 provided in the first housing 4 and are rotatably supported.

  As shown in FIGS. 5 and 6, the first and second portions 21 a and 21 b of the flexible cable 21 extend so as to be shifted from each other so as to face the large diameter portion 31 or the small diameter portion 32, respectively. The base end portion 21aa of the first portion 21a is aligned with the flat portion 36 of the large-diameter portion 31, and is attached to the flat portion 36 by, for example, adhesion or double-sided tape. As shown in FIG. 8, the distal end portion of the first portion 21 a is connected to the second connector 18 in the second housing 5. The opening edge 13a of the second opening 13 of the lower wall 5b of the second housing 5 has a relatively large roundness (round), and as shown in FIG. The first portion 21a of the flexible cable 21 is gently curved and is not easily stressed.

  As shown in FIG. 6, the second portion 21 b is wound around the small diameter portion 32 in the same direction as the winding direction of the first portion 21 a with respect to the large diameter portion 31 (for example, the clockwise direction in FIG. 6). ing. As shown in FIG. 8, the distal end portion of the second portion 21 b is connected to the first connector 16 in the first housing 4. As shown in FIG. 7, the connecting portion 21 c is fitted to the slope portion 33, passes through the notch portion 37 of the flange portion 35 a, and extends in an inclined manner along the slope portion 33.

  As shown in FIGS. 1 and 2, the drive unit 25 moves the stepped roller 24 in a direction to wind up the first portion 21 a when the second housing 5 slides in the direction in which the first portion 21 a is loosened. Rotate. The drive unit 25 according to the present embodiment is, for example, a spring, and is disposed concentrically with the central shaft portion 34 as shown in FIG. 4 and surrounds the outer periphery of the central shaft portion 34 of the stepped roller 24. The drive unit 25 has an inner peripheral portion of the mainspring fixed to the central shaft portion 34 of the stepped roller 24, and an outer peripheral portion connected to the support portion 41 of the first casing 4 (that is, with respect to the outer wall of the first casing 4). And fixed).

  As a result, the drive unit 25 stores an urging force when the second housing 5 slides in the direction in which the first portion 21a is pulled (for example, when sliding toward the closed state), and the first portion 21a The stepped roller 24 is rotated by the urging force stored when the second housing 5 slides in the direction in which it is loosened (for example, when sliding toward the open state).

Next, the operation of the electronic device 1 will be described.
As shown in FIGS. 2 and 9, when the electronic apparatus 1 is in the closed state, the first portion 21a of the flexible cable 21 is pulled out from the stepped roller 24, and the first casing 4 and the second casing are drawn. It stretches between the body 5 for a long time. Further, the second portion 21 b of the flexible cable 21 is bent to some extent in the first housing 4. In this closed state, the driving unit 25 which is a mainspring is in a state where the urging force is stored.

  When the second housing 5 is slid from the closed state toward the open state as shown in FIGS. 1 and 8, the first portion 21a of the flexible cable 21 tries to bend. 25 rotates the stepped roller 24, and the flexible cable 21 is wound around the stepped roller 24. Here, since the shaft diameter is different between the large diameter portion 31 and the small diameter portion 32, the amount of winding is different even with the same number of turns. That is, the large-diameter portion 31 can wind up the flexible cable 21 more than the small-diameter portion 32.

  As a result, the long first portion 21 a extending to the second housing 5 is wound up relatively much by the large-diameter portion 31, and the short second portion 21 b that always fits in the first housing 4 is formed. The small diameter portion 32 is wound up relatively little. Thereby, the 1st part 21a can be expanded / contracted largely, without extending / contracting the 2nd part 21b very much. Furthermore, since the small diameter portion 32 functions as a mandrel with respect to the second portion 21b, the posture of the second portion 21b is easily stabilized in the process in which the first portion 21a is largely wound. That is, the stress applied to the second portion 21b is small, and the risk of disconnection is reduced.

  According to the electronic apparatus 1 having such a configuration, it is possible to realize a reduction in dead space and an improvement in design. Note that the “dead space” in the present specification is, for example, a portion where the first and second casings 4 and 5 overlap each other when the electronic device is opened (region D in FIG. 16C), An area where buttons and other parts cannot be arranged at high density.

  Here, for comparison, electronic devices that do not include a stepped roller are shown in FIGS. In order to reduce the dead space D, it is desirable to increase the sliding amount of the second casing 5 with respect to the first casing 4, but when the sliding amount is increased, as shown in FIG. The opening 13 in the lower wall of the second housing 5 is exposed to the outside during maximum sliding. For this reason, design nature will be spoiled.

  In order to prevent the opening 13 from being exposed and improve the design, it is necessary to form the opening 13 in the lower wall of the second housing 5 relatively small as shown in FIG. . However, in such an electronic device having a relatively small opening 13, as shown in FIG. 17B, if the length of the flexible cable is not sufficient, the cable is not moved when the second housing 5 is slid. The second housing 5 will hit. Therefore, as shown in FIG. 17C, it is necessary to increase the length of the flexible cable so that the flexible cable sufficiently follows the movement of the small opening 13.

  However, when a long flexible cable is used, as shown in FIG. 17D, the flexible cable is greatly bent when the second casing 5 is slid, and the first casing 4 and the second casing 5 The flexible cable protrudes from the space. Therefore, in an electronic device using a long flexible cable, on the contrary, the slide amount cannot be made too large, resulting in an increase in dead space. As described above, it is difficult to achieve a reduction in dead space and an improvement in design.

  On the other hand, the electronic device 1 according to the present embodiment includes a stepped roller 24 having a large diameter portion 31 and a small diameter portion 32 and a drive unit 25 that rotates the stepped roller 24. Then, the first portion 21a of the flexible cable 21 that extends from the first housing 4 into the second housing 5 and is to be greatly expanded and contracted is wound around the large-diameter portion 31 of the stepped roller 24, so that the first The second portion 21 b of the flexible cable 21 that does not need to be greatly expanded and contracted is wound around the small diameter portion 32 of the stepped roller 24.

  Thereby, only the 1st part 21a can be rolled up large when the 2nd housing | casing 5 slides. That is, in the electronic device 1 using the long flexible cable 21, the bending of the flexible cable 21 can be reduced or almost eliminated. Therefore, a large slide amount can be secured without worrying about the flexible cable 21 protruding outside. Thereby, dead space can be reduced in the electronic device 1 (that is, the electronic device in which the opening 9 of the second housing 5 is formed to be relatively small) with improved design. If the dead space can be reduced, for example, the area of the operation surface of the upper wall 4a of the first housing 4 can be increased.

  Here, the second portion 21 b of the flexible cable 21 is a portion that is always housed in the first housing 4, and substantially does not require winding. Therefore, it is also conceivable to wind only the first portion 21a by winding only the first portion 21a around the roller. However, if only the first portion 21a is taken up, the second portion 21b is severely twisted in the process of taking up the first portion 21a, there is a risk of disconnection, and the life of the cable is shortened.

  On the other hand, in the electronic device 1 according to the present embodiment, by winding the second portion 21b that is substantially unnecessary to be wound around the small diameter portion 32, the small diameter portion 32 functions as a mandrel, and the first portion 21a is large. In the process of being wound, the posture of the second portion 21b is likely to be stabilized. Thereby, the stress applied to the second portion 21b is small, the risk of disconnection is small, and the life of the cable is prolonged.

  The large-diameter portion 31 and the small-diameter portion 32 are provided separately in the axial direction of the stepped roller 24, and the first portion 21a and the second portion 21b are opposed to the large-diameter portion 31 or the small-diameter portion 32, respectively. If extended and shifted, only the first portion 21a can be wound long with a simple structure.

  When the second part 21b is wound around the small diameter part 32 in the same direction as the winding direction of the first part 21a with respect to the large diameter part 31, the direction of expansion and contraction of the first part 21a and the second part 21b Are the same, the postures of the first portion 21a and the second portion 21b are more stable and less stressed.

  When the flexible cable 21 is formed in a U shape in which the first portion 21a and the second portion 21b extend in the same direction, the first portion 21a and the second portion 21b with respect to the stepped roller 24 The winding direction can be made uniform, and the above effect can be realized with a simple structure.

  In addition, the flexible cable 21 is not restricted to what was formed in the U shape. The flexible cable 21 may have, for example, a key shape (see FIG. 10) in which the first portion 21a and the second portion 21b extend in opposite directions with respect to the connecting portion 21c, or other shapes.

  When the stepped roller 24 includes the slope portion 33 between the large diameter portion 31 and the small diameter portion 32, there is no large step between the large diameter portion 31 and the small diameter portion 32, so the first portion 21a and the second portion It can be avoided that the part 21b is bent greatly. Thereby, the stress concerning the flexible cable 21 can be made small. In particular, when the connecting portion 21c that connects the first portion 21a and the second portion 21b is inclined and extends along the slope portion 33, the stress applied to the flexible cable 21 can be further reduced.

  When the large-diameter portion 31 has flange portions 35a and 35b for guiding the first portion 21a, and the flange portion 35a has a notch portion 37, while reliably guiding the winding of the first portion 21a, The stress applied to the flexible cable 21 can be reduced.

  If the drive unit 25 is a mainspring, the above effect can be obtained by rotating the stepped roller 24 with a very simple structure that does not require a power source. The drive unit 25 may be a plate-shaped spring as shown in FIG.

  When the drive unit 25 that is a mainspring is directly beside the large-diameter portion 31 in the axial direction of the stepped roller 24, it is possible to efficiently transmit the urging force and to reduce the size of the entire cable winding structure 23. it can.

(Second Embodiment)
Next, an electronic apparatus 1 according to a second embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the structure which has the same or similar function as the structure of the said 1st Embodiment, and the description is abbreviate | omitted. The configuration other than that described below is the same as that of the first embodiment.

  The drive unit 25 according to the present embodiment is a motor. As illustrated in FIG. 12, the electronic device 1 includes a detection unit 51 that detects a slide of the second housing 5, and a control unit that controls driving of the drive unit 25 (motor) based on the detection of the detection unit 51. 52. The driving unit 25 rotates the stepped roller 24 in synchronization with the slide of the second housing 5.

  Even with such a configuration, it is possible to achieve a reduction in dead space and an improvement in design as in the first embodiment.

(Third embodiment)
Next, a door structure 61 according to a third embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the structure which has the same or similar function as the structure of the said 1st Embodiment, and the description is abbreviate | omitted. The configuration other than that described below is the same as that of the first embodiment.

  The door structure 61 is an example of a sliding structure referred to in the present invention. For example, the door structure 61 is a door of a vehicle or a door of a household electric appliance such as a refrigerator, but is not limited thereto. The door structure 61 includes a first unit 2 (first door) and a second unit 3 (second door). The first unit 2 is, for example, a fixed door. The second unit 3 is, for example, an open / close door. For example, an electronic component such as a door sensor is mounted on the second unit 3.

  Even with such a configuration, it is possible to achieve a reduction in dead space and an improvement in design as in the first embodiment.

  The electronic apparatus 1 and the door structure 61 according to the first to third embodiments of the present invention have been described above, but the present invention is not limited to these. Each component according to the first to third embodiments can be used in appropriate combination. Further, the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the gist thereof in the implementation stage.

  The sliding structure referred to in the present invention is not limited to the electronic device 1 and the door structure 61, and can be widely applied as long as it has a sliding mechanism. The drive unit 25 that rotates the stepped roller 24 is not limited to a spring or a motor. The drive unit 25 may be a mechanical mechanism that transmits the slide of the second housing 5 as the rotation of the stepped roller 24, for example.

  DESCRIPTION OF SYMBOLS 1 ... Electronic device, 2 ... 1st unit, 3 ... 2nd unit, 4 ... 1st housing | casing, 5 ... 2nd housing | casing, 21 ... Flexible cable, 21a ... 1st part, 21b ... 1st 2 part, 21c ... coupling part, 23 ... cable winding structure, 24 ... stepped roller, 25 ... drive part, 31 ... large diameter part, 32 ... small diameter part, 33 ... slope part, 35a, 35b ... collar part, 37 ... Notch.

Claims (14)

A first housing;
A second housing slidable relative to the first housing;
A stepped roller provided in the first housing and having a large diameter portion and a small diameter portion;
A first portion that is wound around the large-diameter portion and extends from the first housing into the second housing, is connected to the first portion, is wound around the small-diameter portion, and A flexible cable having a second portion extending into one housing;
A drive unit that rotates the stepped roller in a direction to wind up the first part when the second casing slides in a direction in which the first part is loosened;
An electronic apparatus comprising: In the description of claim 1,
The large diameter portion and the small diameter portion are provided separately in the axial direction of the stepped roller,
The electronic device, wherein the first portion and the second portion are shifted from each other so as to face the large diameter portion or the small diameter portion, respectively. In the description of claim 2,
The electronic device, wherein the second portion is wound around the small diameter portion in the same direction as the winding direction of the first portion with respect to the large diameter portion. In the description of claim 3,
The flexible cable has an U-shape in which the first portion and the second portion extend in the same direction. In the description of claim 3,
The flexible cable has a key shape in which the first portion and the second portion extend in opposite directions to each other. In the description of claim 1,
The stepped roller is provided with an slope between the large diameter portion and the small diameter portion, and a slope portion whose diameter continuously decreases from the large diameter portion toward the small diameter portion. In the description of claim 6,
The flexible cable includes a connecting portion that connects the first portion and the second portion, and the connecting portion extends in an inclined manner along the slope portion. . In the description of claim 7,
The large-diameter portion has a flange portion that stands on both sides of the first portion and guides the first portion, and the flange portion has a notch at a portion through which the connecting portion passes. Electronic equipment characterized by In the description of claim 1,
The electronic apparatus according to claim 1, wherein the large-diameter portion has a flat portion to which the flexible cable is attached in a part of the circumferential direction. In the description of claim 1,
The drive unit stores an urging force when the second casing slides in a direction in which the first part is pulled, and the driving unit moves when the second casing slides in a direction in which the first part is loosened. An electronic device comprising a spring that rotates the stepped roller by an urging force. In the description of claim 1,
The electronic device according to claim 1, wherein the driving unit is a motor driven in synchronization with the slide of the second casing. A cable winding structure for winding a flexible cable having a first portion and a second portion connected to the first portion,
A stepped roller having a large diameter portion around which the first portion is wound and a small diameter portion around which the second portion is wound;
A drive unit that rotates the stepped roller in a direction to wind up the first part when the flexible cable moves in a direction in which the first part is loosened;
A cable winding structure characterized by comprising: In the description of claim 12,
The first portion and the second portion extend offset from each other;
The cable winding structure, wherein the large diameter portion and the small diameter portion are provided separately in the axial direction of the stepped roller so as to face the first portion or the second portion, respectively. A first unit;
A second unit slidable relative to the first unit;
A stepped roller provided in the first unit and having a large diameter portion and a small diameter portion;
A first portion that is wound around the large-diameter portion and extends from the first unit into the second unit, is connected to the first portion, is wound around the small-diameter portion, and A flexible cable having a second portion extending into one unit;
A drive unit that rotates the stepped roller in a direction to wind up the first part when the second unit slides in a direction in which the first part is loosened;
A sliding structure characterized by comprising:

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