JP2011199032A - Electronic apparatus - Google Patents

Abstract

An electronic device in which a normal linear member can be used as a connection cable led out from a housing of the electronic device, and a packing material can be easily arranged when the housing is assembled.
A connection cable having a packing material disposed around it, an opening for leading the connection cable to the outside, and a direction intersecting with a direction in which the connection cable is led inside the opening. And a casing 1 having a plurality of ribs 16 in which cutouts 21 for accommodating the connection cables 13 are formed, and the packing material 14 is formed by winding a band-shaped member around the connection cables 13. A slit 22 having a depth that does not penetrate to the connection cable 13 is formed in a portion that contacts the rib 16.
[Selection] Figure 2

Description

  The present invention relates to an electronic device including a connection cable led out of a housing, and more particularly, to an electronic device having a high water-tightness and a dust-proof property in a configuration that can be easily formed in a lead-out portion of the connection cable.

  Portable electronic devices such as notebook personal computers, PDAs (Personal Digital Assistants), mobile phones, and portable game machines are spreading. Such an electronic device contains a precise electronic circuit inside, so it is vulnerable to moisture entering from the outside, and if the rain drops on the device body, the internal circuit is damaged and the device itself is used It was often impossible.

  However, due to the recent increase in outdoor use, for example, even if it has been accidentally dropped into a puddle, etc., or even if the equipment is splashed with water or raindrops, it has waterproofness that does not cause abnormal operation There is an increasing need for mobile phones.

  In addition, notebook computers are used as a means of information processing and transmission, and their use area expands. There is a need for special applications that guarantee operation in harsh conditions.

  As a notebook computer with high water-tightness and dustproofness that meets these needs, a notebook computer with a waterproof keyboard built into the waterproof main unit and the display unit and PC main unit connected by a waterproof flexible cable In order to facilitate disassembly when replacing internal parts of the device and assembly / manufacturing of the device itself, a water repellent layer containing a Teflon (registered trademark) resin and a closed foam polymer layer were laminated. The thing using a waterproof packing is disclosed (refer patent document 1).

JP 2009-003649 A

  However, in the above conventional method, the opening of the casing is covered with an annular packing material, and the connection cable is led out to the outside in a state of being sandwiched between the packing materials. You must use a flexible cable. Also, when assembling a personal computer casing, the packing material must be passed through a flexible cable in advance, and the restrictions on the selection of connection cables and personal computer assembly and manufacturing have not been sufficiently eliminated.

  The present invention solves such a problem of the prior art, and a normal linear member can be used as a connection cable led out from the casing of the electronic device, and the packing material can be used when the casing is assembled. An object is to obtain an electronic device that can be easily arranged.

  In order to solve the above problems, an electronic device according to the present invention includes a connection cable having a packing material disposed around it, an opening through which the connection cable is led out, and a direction in which the connection cable is led inside the opening. A housing having a plurality of ribs arranged in the intersecting direction and formed with notches for accommodating the connection cables, and the packing material is formed by winding a band-shaped member around the connection cables, and the ribs A slit having a depth that does not penetrate to the connection cable is formed in the abutting portion.

  In the electronic device according to the present invention, the packing material disposed around the connection cable led out from the opening of the housing is formed by winding the belt-shaped member around the connection cable, and is formed in the housing. A slit having a depth that does not penetrate to the connection cable is formed in a portion that contacts the rib. For this reason, the packing material having a high degree of fitting with the ribs of the housing can be easily wound around the connection cable.

1 is a perspective view showing an overall configuration of a notebook computer according to an embodiment of the present invention. It is a principal part enlarged plan view which shows the structure of the opening part part in the 1st member which comprises the housing | casing of the notebook computer concerning embodiment of this invention. It is a principal part enlarged plan view which shows the structure of the opening part in the 2nd member which comprises the housing | casing of the notebook computer concerning embodiment of this invention. It is a perspective view which shows the structure of the rib formed in the 1st member which comprises the housing | casing of the notebook personal computer concerning embodiment of this invention. It is a perspective view which shows a mode that the packing material of the notebook computer concerning embodiment of this invention is wound around a connection cable. It is a perspective view which shows the state by which packing material was wound around the connection cable of the notebook computer concerning embodiment of this invention.

  The electronic device of the present invention is disposed in a direction intersecting with a connection cable in which a packing material is disposed around, an opening for leading the connection cable to the outside, and a direction in which the connection cable is led out inside the opening. A casing having a plurality of ribs formed with notches for accommodating connection cables, and the packing material is formed by winding a band-shaped member around the connection cables, and the connection is made at a portion that contacts the ribs. A slit having a depth that does not penetrate to the cable is formed.

  In this way, the packing material can be placed at a predetermined position simply by wrapping the strip member around the connection cable, and the slits of the packing material are strongly fitted to the plurality of ribs formed in the casing near the opening. Therefore, the packing material swells at the space between the ribs, and exhibits high water tightness and dust resistance. For this reason, it is possible to obtain an electronic device that can be easily manufactured using a normal linear connection cable and that has high water tightness and dust resistance.

  In the electronic device according to the present invention, it is preferable that the packing material is formed by winding the band-shaped member around the connection cable a plurality of times. In this way, the thickness of the packing material can be made as desired, and further, the slit is provided only in the portion of the belt-like member that will be positioned on the surface side when wound, so that the packing is It is possible to easily form a slit having a depth that does not penetrate through the material to the connection cable.

  Moreover, it is preferable that the edge part by the side of the winding end of the said strip | belt-shaped member is a termination | terminus part in which the said slit is not formed. By doing in this way, it can be easily wound around the connection cable with the end portion on the winding end side of the band-shaped member integrated, and when the slit of the packing material is fitted to the rib of the housing, The portion of the packing material where the slit is not formed easily swells at the interval between the ribs, and high water tightness and dust resistance can be obtained.

  Furthermore, it is preferable that the notch formed in the rib has a substantially arc shape, and the length of the slit is equal to the length of the arc of the notch. By doing so, the slit portion of the packing material fits strongly with the notch formed in the rib, and the packing material arranged around the connection cable inserted into the notch portion provides high water tightness. Dustproofness can be realized.

  Hereinafter, as an embodiment of an electronic apparatus according to the present invention, a notebook computer will be exemplified and described. The notebook computer according to the present embodiment is configured such that a display unit having a transmissive liquid crystal panel as a display panel and a personal computer main body are configured to be rotatable by a hinge mechanism. In addition, it is highly water-tight and dust-proof for use in harsh conditions where the notebook PC is exposed to water droplets.

  FIG. 1 is a perspective view showing the overall configuration of the notebook computer of the present embodiment.

  In the notebook personal computer 100 according to the present embodiment, the display unit 1 as a housing and the personal computer main body 2 as another housing can be rotated by a hinge mechanism (not shown) housed in a hinge cover 3. It is attached in a state.

  In the notebook personal computer 100 of the present embodiment, the hinge mechanism is provided so as to protrude upward from the inside of the personal computer main body 2 so that the rotation shaft is located slightly above the upper surface of the personal computer main body 2. Further, in the notebook personal computer 100 of the present embodiment, two hinge mechanisms are arranged on the left and right sides of the personal computer main body 2. In the notebook computer of this embodiment, there are no restrictions on the arrangement position of the hinge mechanism and the number of hinge mechanisms, and one or three or more hinge mechanisms may be provided. Further, the position of the pivot shaft of the hinge mechanism is not limited, and the pivot shaft is embedded in the personal computer main body 2 or the rear side of the personal computer main body 2 protrudes rather than the upper side. Various forms of hinge mechanisms can be employed.

  The display unit 1 accommodates a liquid crystal panel 4 as a display panel. When the notebook computer 100 is not used, the display unit 1 is folded by a hinge mechanism and becomes a lid of the personal computer main unit 2. As the liquid crystal panel 4 housed in the display unit 1, for example, a normal active matrix type liquid crystal panel can be used. The liquid crystal panel 4 has a backlight and a driving circuit for displaying an image on the liquid crystal panel 4. A liquid crystal module is formed by integration. As described above, since the configuration of the currently known liquid crystal panel can be used as it is as the display panel, a detailed description of the configuration of the display unit 1 including the liquid crystal panel 4 is omitted.

  On the surface of the personal computer body 2, a keyboard, a touch pad, a lid of a disk drive device, and the like are provided as a normal configuration as a notebook personal computer. The personal computer main body 2 contains a circuit configuration such as a CPU and a memory, a rechargeable battery, various drive devices, and the like. Since the configuration of the personal computer main unit 2 can also be applied to the configuration of a conventionally known notebook personal computer, the detailed description thereof is omitted.

  In the notebook computer 100 of this embodiment, in order to maintain high watertightness and dustproofness, a driving circuit (not shown) that drives the liquid crystal panel 4 inside the display unit 1 and a circuit board (not shown) inside the PC main body unit 2 are connected. In order to do this, a packing material is arranged around the connection cable led out from the display unit 1.

  2 and 3 are partial enlarged views showing the configuration of the part of the display unit 1 from which the connection cable 13 is derived in the notebook computer 100 of the present embodiment.

  The display unit 1 of the notebook computer 100 of the present embodiment is formed by joining a first member 11 whose internal structure is shown in FIG. 2 and a second member 12 whose internal structure is shown in FIG. . Since both are diagrams showing the internal configuration, the first member 11 shown in FIG. 2 and the second member 12 shown in FIG. 3 are in a line-symmetric relationship with each other.

  The first member 11 shown in FIG. 2 is formed with an opening 15 for leading the connection cable 13 to a hinge portion (not shown) that is located on the left side in the drawing. Also, two ribs 16 are formed in the vertical direction in FIG. 2 inside the opening 15 of the first member 11.

  2, the arrangement direction of the two ribs 16 is the direction in which the connection cable 13 is led out, that is, the vertical direction in the figure orthogonal to the horizontal direction in the figure, but the rib 16 formation direction in the notebook computer 100 of this embodiment. Is not limited to the direction orthogonal to the direction in which the connection cable 13 is led out. As will be described later, it is only necessary that the slits 22 of the packing material 14 disposed around the connection cable 13 are fitted with the ribs 16 to ensure watertightness and dustproofness. The angle formed with the forming direction can be allowed up to a range of about plus or minus 45 degrees with respect to 90 degrees which is the most preferable orthogonal state.

  As is clear from the perspective view shown in FIG. 4, the two ribs 16 formed on the first member 11 are formed with substantially arc-shaped cutouts 21 (21a, 21b) at the center thereof. For this reason, the connection cable 13 is in a state of being inserted into the notch 21. In FIG. 2, two ribs 16 are provided. However, in the notebook computer 100 of this embodiment, it is sufficient that a plurality of ribs 16 are formed, and three or more ribs 16 can be provided. .

  As shown in FIG. 2, a packing material 14 is arranged around the connection cable 13, and the packing material 14 is deformed so as to bulge in the peripheral portion of the rib 16, particularly in the interval portion between the ribs 16. The watertightness and dustproofness of the connection cable 13 led out from the opening 15 can be ensured. In addition, the method of arrange | positioning the packing material 14 around the connection cable 13, and the detail of the packing material 14 are later mentioned using FIG. 5 and FIG.

  The second member 12 shown in FIG. 3 has an opening 17 formed in the same manner as that formed in the first member 11 shown in FIG. 2, and the first member 11 and the second member 12 are formed. Are joined so that their end portions are brought into contact with each other, so that a substantially circular opening is formed as a whole.

  The ribs 18 of the same size are formed at the same intervals at positions corresponding to the two ribs 16 of the first member 11 also inside the opening 17 of the second member 12 shown in FIG. However, the notches 21 formed in the ribs 16 of the first member 11 as shown in FIG. 4 do not exist in the two ribs 18 formed in the second member 12. For this reason, when the first member 11 and the second member 12 are joined with their end portions attached together, the connection cable 13 is pushed into the first member 11 side and the second member 12 side. It will be in the state which is not located in.

  When three or more ribs 16 of the first member 11 are formed, it is preferable to form the same number of ribs 18 on the second member 12.

  Next, details of the notch 21 formed in the rib 16 will be described with reference to FIG.

  In the notebook personal computer 100 of the present embodiment, a substantially arc-shaped cutout 21 (21a, 21b) is formed on the rib 16 (16a, 16b) formed on the first member 11 forming the display unit 1. Yes. Here, the substantially arc-shaped notch indicates that the outer periphery of the notch 21 is substantially arc-shaped, and is a concept that does not depend on the magnitude of the prospective angle of the arc. Therefore, like the notch 21a formed in the left rib 16a shown in FIG. 4, when the expected angle is approximately 180 degrees, not only the notch that is cut out of a semicircle but also the expected angle is 180. It is also possible to form a shallow notch of less than 1 degree, or a notch with a prospective angle of 180 degrees or more that the upper end of the rib turns around and becomes narrow. Further, like the notch 21b formed in the right rib 16b shown in FIG. 4, the outer peripheral portion of the notch 21b is not formed only by an arc, but according to the height of the rib 16b, the notch 21b. In some cases, the upper end portion includes a short straight line portion d connected to the arc. Furthermore, the arc portion is not limited to a part of a perfect circle, and the substantially arc-shaped cutout includes a cutout having an outer shape formed by cutting out a part of an ellipse or an ellipse. It is a concept.

  FIG. 5 shows a state in which the packing material 14, which is a belt-like member, is wound around the connection cable 13 in order to arrange the packing material 14 around the connection cable 13. FIG. 6 shows a state in which the packing material 14 is wound around the connection cable 13.

  As shown in FIG. 5, the packing material 14 arranged around the connection cable 13 of the notebook computer 100 of the present embodiment is fixed by winding one end of the belt-shaped member around the connection cable 13 and winding it around the connection cable 13. It is arranged.

  By doing in this way, even after it fixes after both ends of connecting cable 13 with a predetermined fixing member etc., packing material can be easily arranged at an arbitrary place. For this reason, it is not necessary to pass the connection cable through the packing material in advance like the conventional packing material made of resin or hard rubber. In addition, in order to place a conventional molded packing material at a desired position of the connection cable with both ends fixed, it is necessary to divide the packing material and arrange it around the connection cable and then reintegrate it. However, the packing material 14 of this embodiment eliminates such trouble. Furthermore, a gap is generated between the packing material and the connecting cable between the packing materials and the connecting cable, which is likely to occur by dividing the packing material once and then integrating the packing material. Can be solved. For this reason, the new packing material 14 can be disposed without removing the connection cable 13 not only when the notebook personal computer 100 is manufactured but also when the notebook personal computer 100 is repaired, and handling becomes extremely easy.

  It is preferable that a slit 22 is formed in advance in the packing material 14 that is in the state of a band-shaped member before being wound around the connection cable 13. As shown in FIG. 5, the packing material 14 in which the slits 22 are formed in advance is wound around the connection cable 13 at the position on the winding end side in the length direction of the belt-shaped member, and as shown in FIG. The slits 22 can be formed on the surface of the packing material 14 arranged around the periphery of the.

  The width X and the length Y of the slit 22 formed in the packing material 14 are substantially equal to the width t of the rib 16 to be fitted and the circumferential length L of the arc portion of the notch 21 shown in FIG. More preferably. . By doing in this way, the slit 22 of the packing material 14 wound around the connection cable 13 and the notch 21 part of the rib 16 fit reliably.

  As shown in FIG. 6, the packing material 14 disposed around the connection cable 13 of the present embodiment is wound around the connection cable 13 about two and a half times. In this way, by being wound around the connection cable 13 a plurality of times, it is possible to form the packing material 14 having a necessary thickness by overlapping the belt-like members. Further, as shown in FIG. 5, since the slit 22 having a length Y corresponding to the circumferential length L of the notch 21 is provided on the winding end side of the belt-like member 14, the thickness of the slit 22 in the state of the belt-like member is provided. Even in the packing material 14 wound around the connection cable 13, the slit 22 is not formed in the portion corresponding to the second layer from the surface. It is formed only on the surface, and the slit 22 does not have a depth that penetrates to the connection cable 13. For this reason, the packing material 14 is formed on the surface at the portion where the slit 22 is formed and is fitted with the notch 21 of the rib 16 and is continuously formed at the inner peripheral portion near the connection cable 13. High water tightness and dustproofness can be obtained in the provided opening 15.

  In order to arrange the packing material 14, the number of times the belt-shaped member is wound around the connection cable is not limited to the two and a half times shown as the embodiment, and the thickness of the packing material 14 that is the belt-shaped member, It should be determined as appropriate according to the material and required watertightness / dustproofness. However, when the packing material 14 is wound around the connection cable 13 twice or less and when the connection cable 13 is surrounded by a single layer at the portion where the slit 22 is formed, the packing material which is a band-shaped member is used. The depth of the slit 22 formed in 14 is less than the thickness of the belt-like member so that the slit 22 does not penetrate to the connection cable 13 when wound around the connection cable 13. It is necessary.

  The number of slits 22 formed in the packing material 14 and the interval between the slits 22 are made equal to the number of disposed ribs 16 and the interval between the ribs 16 formed in the first member 11 to be fitted. For this reason, each of the two slits 22 formed in the packing material 14 can be accurately fitted to the two ribs 16 formed in the first member 11, and the two ribs as shown in FIG. The packing material 14 swells at intervals of 16 and can exhibit high confidentiality and dustproofness.

  As shown in FIG. 5, it is preferable that the end part 14a of the width Z in which the slit 22 is not formed is formed in the end part of the packing material 14 at the winding end side. By doing in this way, when the packing material 14 which is a strip | belt-shaped member by which the slit was formed previously is wound around the connection cable 13, the edge part of the packing material 14 will fall apart and wind the packing material 14 It is possible to avoid a decrease in workability of work. In addition, since the end portion 14 a is formed on the winding end side of the packing material 14, it is possible to secure a portion where the slit 22 is not formed on both outer sides of the slit 22 in the length direction. For this reason, when the slit 22 fits into the notch portion 21 of the rib 16, it is possible to effectively prevent a gap from being formed in the packing material 14 and to ensure high water tightness and dustproofness. it can.

  For these reasons, the width Z of the end portion 14a of the packing material 14 should be adjusted as appropriate in consideration of the material and thickness of the packing material 14. Of course, if there is no hindrance in winding the packing material 14 around the connection cable 13 and the winding end portion of the packing material 14 is securely fixed and the desired watertightness and dustproofness can be obtained, the end portion of the packing material 14 is provided. It is not essential to provide 14a, and the slit 22 may be formed up to the end of the packing material 14 on the winding end side.

  As the packing material 14, for example, a resin such as foamable silicon or urethane having a thickness of 2 to 4 mm, or a rubber sheet with low hardness can be used. Further, the packing material 14 used in the notebook computer 100 of the present embodiment facilitates winding and fixing to the connection cable 13 and obtains high water tightness and dustproofness at the portion where the packing materials 14 overlap each other. In addition, a layered adhesive (not shown) is applied to the entire back surface of the packing material 14. In addition, the adhesive layer is not required on the entire back surface of the sheet-like packing material 14, but the packing material 14 is fixed to the connection cable 13, or at least at the final end wound around the connection cable 13. As described above, the packing material 14 can be securely fixed to the connection cable 13 by using an adhesive layer only at both ends in the longitudinal direction of the back surface of the packing material 14 that is a belt-like member, and the wound packing material 14 It suffices that the adhesive layer is provided only in a necessary portion as long as the watertightness and dustproofness are not lowered between the respective layers. Alternatively, the packing material 14 may be fixed from the outside of the packing material 14 after the packing material 14 is wound around the connection cable without providing an adhesive layer on the packing material 14.

  FIG. 5 illustrates a state in which the length direction of the packing material 14 and the connection cable 13 are arranged substantially perpendicularly when the packing material 14 that is a belt-shaped member is wound around the connection cable 13. In the personal computer 100, it is also possible to arrange the packing material 14 as a belt-shaped member slightly obliquely with respect to the connection cable 13 and to wind it in a spiral shape. Thus, when the length direction of the packing material 14 is wound obliquely around the connection cable 13, the slit 22 formed in the length direction in the state of the belt-like member is formed when a plurality of layers are overlapped by winding. The arrangement positions are shifted from each other. For this reason, the depth of the slit 22 from the surface of the packing material 14 is set to the thickness of the packing material 14 that is a band-shaped member, and the slit 22 that does not penetrate to the connection cable 13 can be easily formed.

  If the slit 22 having a desired depth can be formed on the surface of the packing material 14 over a predetermined length Y that fits with the notch 21 of the rib 16, the band shape before being wound around the connection cable 13 is formed. Forming the slit 22 in advance in the packing material 14 that is a member is not an essential requirement in the notebook computer 100 of the present embodiment, and the slit 22 is formed after the packing material 14 is wound around the connection cable 13. It doesn't matter. In particular, when the depth of the slit 22 to be formed in the packing material 14 is larger than the thickness of the packing material 14 at the band-shaped member, that is, the slit 22 is formed across a plurality of layers of the wound packing material 14. In the case where it is necessary to form the slit 22 at a predetermined position of the packing material 14 that overlaps when the packing material 14 is wound around the connection cable 13 before the packing material 14 is wound around the connection cable 13, it may be difficult. is there. In such a case, it is preferable to form the slit 22 having a desired depth after the packing material 14 is wound around the connection cable 13.

  As described above, in the notebook computer 100 of the present embodiment, the plurality of ribs 16 are formed inside the opening 15 from which the connection cable 13 is led out, and the connection cable 13 is formed in the notch 21 formed in the rib 16. The slit 22 formed in the packing material 14 wound around the mating member ensures a high water-tightness and dust-proof property for the lead-out portion of the ordinary linear connection cable 13 while having a structure that is easy to manufacture. Can be realized.

  In the above embodiment, only the ribs 16 formed on the first member 11 out of the ribs 16 and 18 formed on the first member 11 and the second member 12 constituting the display unit 1 are substantially omitted. An example in which the arc-shaped cutout 21 is provided has been described. However, the notebook computer 100 of the present embodiment is not limited to this, and the notches 21 can be formed in both the rib 16 of the first member 11 and the rib 18 of the second member 12.

  Moreover, when the depth of the notch 21 is deep like the notch 21b formed in the rib 16b shown on the right side in FIG. 4, the thickness of the packing material 14 disposed around the connection cable 13 is increased. The watertightness and dustproofness are not lowered from the portion of the notch 21 formed in the rib 16, such as by sticking a shield member in the vicinity of the rib 18 formed in the second member 12 in this embodiment. Such treatment can be performed.

  Further, in the notebook personal computer 100 of the present embodiment, the shape of the notch 21 formed in the rib 16 is exemplified as a substantially arc shape, but the shape of the notch is not limited, and the packing material to be fitted or the like If the required water-tightness and dustproofness can be obtained by adjusting the thickness, for example, use a polygonal cutout as a whole or, in extreme cases, a substantially V-shaped cutout. You can also.

  Moreover, in the said embodiment, although the packing material 14 arrange | positioned around the connection cable 13 derived | led-out from the display part 1 of the notebook personal computer 100 to a hinge part was demonstrated, it derives from the other part of the housing | casing of the notebook personal computer 100. Needless to say, the above configuration can be applied to the packing material disposed around other connection cables.

  Further, in the present embodiment, the notebook computer used in a special environment provided with a transmissive liquid crystal panel as a display panel has been described as the electronic apparatus of the present invention. However, this is merely an example, and the present invention is not limited thereto. It does not limit the scope of application.

  Even when the electronic device of the present invention is a notebook personal computer, the present invention is not limited to one that assumes a particularly severe use condition, and it is needless to say that the present invention can be applied to a regular personal computer. Further, the display panel of the notebook computer is not limited to the illustrated transmissive liquid crystal panel, and various display panels such as a transflective liquid crystal panel, a reflective liquid crystal panel, a PDP panel, an EL panel, and an FED panel can be used. .

  In addition, the electronic device to which the present invention is applied is not limited to a laptop computer, and includes water-tight and dust-proof devices including portable devices such as PDAs, portable DVD players, electronic dictionaries, game machines, and mobile phones. The present invention can be applied to various electronic devices that require high performance.

  The present invention can be used for various electronic devices in which high water-tightness and dustproofness are required in the lead-out portion of the connection cable led out from the housing.

1 Display (housing)
2 PC body 3 Hinge cover 4 Liquid crystal panel (display element)
DESCRIPTION OF SYMBOLS 11 1st member 12 2nd member 13 Connection cable 14 Packing material 15, 17 Opening part 16, 18 Rib 21 Notch part 22 Slit 100 Notebook computer (electronic device)

Claims (4)

A connection cable with packing material around it,
A housing having an opening for leading out the connection cable to the outside, and a plurality of ribs formed inside the opening in a direction intersecting with the direction in which the connection cable is led and having a notch for receiving the connection cable And
The packing material is formed by winding a band-shaped member around the connection cable, and a slit having a depth that does not penetrate to the connection cable is formed in a portion that contacts the rib.   The electronic device according to claim 1, wherein the packing material is formed by winding the band-shaped member around the connection cable a plurality of times.   The electronic device according to claim 1, wherein an end portion on the winding end side of the belt-shaped member is a terminal portion where the slit is not formed.   4. The electronic device according to claim 1, wherein the notch formed in the rib has a substantially arc shape, and the length of the slit is equal to the length of the arc of the notch. 5.

Images