Cable winding device and assembly method therefor

Abstract

To provide a cable winding device capable of facilitating winding of flexible flat cable around a shaft body, thereby improving the assemblability thereof.SOLUTION: A cable winding device 1 includes: a flexible flat cable (FFC) 2; a shaft 3 fixing the FFC 2; and an enclosure 4 (a lower case 5 and an upper cover 6) for enclosing the shaft 3 and the FFC 2 wound around the shaft 3. The cable winding device 1 is provided with a shaft body fitting part 7 which can fit the shaft 3 to a specified position inside the lower case 5.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] This invention relates to a cable winding device for a flexible flat cable and a method for assembling the cable winding device.

Background Art

[0002] Conventionally, a cable winding device for a flexible flat cable has been known. The cable winding device disclosed in Patent Document 1 has a structure in which a shaft body and a housing are integrally formed, and a flexible flat cable is wound around the shaft body.

[0003] By the way, in a cable winding device having such a structure, the following operations are performed in the assembly process. That is, the flexible flat cable is fixed to the shaft body, and the flexible flat cable is wound around the shaft body.

[0004] In this regard, in the operation of winding the flexible flat cable around the shaft body, it is necessary to wind the flexible flat cable vertically around the shaft body located inside the housing while guiding the flexible flat cable obliquely upward and rotating it. However, such an operation is difficult for an operator due to the difficulty of handling a long strip-shaped object.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] An object of this invention is to provide a cable winding device capable of easily winding a flexible flat cable around a shaft body, and thus improving the assemblability.

Means for Solving the Problem

[0007] This invention relates to a cable winding device comprising a flexible flat cable, a shaft body for fixing the flexible flat cable, and a housing for accommodating the shaft body and the flexible flat cable wound around the periphery of the shaft body, wherein a shaft body mounting portion is provided to enable the shaft body to be mounted at a predetermined position inside the housing. 、 The housing is composed of a lower case and an upper cover fitted to the lower case to close the opening, and the shaft body mounting portion has a fitting portion for fitting the end face of the shaft body and at least the bottom surface of the lower case or the back surface of the upper cover facing the bottom surface, and the fitting portion is provided on one side of the opposing surfaces. ta qian a fitting concave portion, and provided on the other side of the opposing surface ta qian a fitting convex portion, and is composed of Before the fitting concave portion and the fitting convex portion are inserted and fitted , a pair of the fitting concave portions and the fitting convex portions, and another pair of the fitting concave portions and the fitting convex portions are arranged in parallel to each other, a pair of the fitting concave portions and the fitting convex portions are provided on the central axis of the shaft body, a plurality of positioning fitting concave portions, which are the other fitting concave portions, are provided on a concentric circle with respect to the central axis of the shaft body, positioning fitting convex portions, which are the other fitting convex portions, are provided on the concentric circle with respect to the central axis of the shaft body, and any one of the positioning fitting concave portions and the positioning fitting convex portions are inserted and fitted which is characterized in that.

[0008] Further, this invention relates to a method of assembling a cable winding device, which includes a step of winding the flexible flat cable around the shaft body to create a cable winding body, and a step of mounting the cable winding body at a predetermined position inside the housing. ni zhuang which has , The housing is composed of a lower case and an upper cover fitted to the lower case to close the opening, and the shaft body mounting portion has a fitting portion for fitting the end face of the shaft body and at least the bottom surface of the lower case or the back surface of the upper cover facing the bottom surface, and the fitting portion is provided on one side of the opposing surfaces. ta qian a fitting concave portion, and provided on the other side of the opposing surface ta qian a fitting convex portion, and is composed of Before the fitting concave portion and the fitting convex portion are inserted and fitted , a pair of the fitting concave portions and the fitting convex portions, and another pair of the fitting concave portions and the fitting convex portions are arranged in parallel to each other, a pair of the fitting concave portions and the fitting convex portions are provided on the central axis of the shaft body, a plurality of positioning fitting concave portions, which are the other fitting concave portions, are provided on a concentric circle with respect to the central axis of the shaft body, positioning fitting convex portions, which are the other fitting convex portions, are provided on the concentric circle with respect to the central axis of the shaft body, and any one of the positioning fitting concave portions and the positioning fitting convex portions are inserted and fitted which is characterized in that.

[0009] According to the present invention, a flexible flat cable can be easily wound around a shaft body, and thus the assemblability of the cable winding device can be improved.

[0010] Specifically, according to the cable winding device of the present invention, it is possible to wind a flexible flat cable around the shaft body with the shaft body removed from the housing. Therefore, when winding the flexible flat cable, it is not necessary to bypass the peripheral wall portion of the housing, so it is possible to guide the flexible flat cable perpendicular to the shaft body and wind it by rotating the shaft body. Therefore, the flexible flat cable can be easily wound around the shaft body. Also, regarding the automation of the same operation, it is possible to attach the shaft body to the drive shaft and rotate it to wind the flexible flat cable around the shaft body. Therefore, it is easy to automate the operation of winding the flexible flat cable around the shaft body. As a result, the assemblability of the cable winding device can be improved.

[0011] Further, the housing is composed of a lower case and an upper cover that is fitted to the lower case to close the opening, and the shaft body mounting portion has a fitting portion that fits the end face of the shaft body and at least the bottom surface of the lower case or the back surface of the upper cover facing the bottom surface.

[0012] Therefore, the one with the flexible flat cable wound around the shaft body (the cable winding body described above) can be mounted at a predetermined position on the bottom surface of the lower case or the back surface of the upper cover facing the bottom surface. Therefore, while facilitating the operation of winding the flexible flat cable around the shaft body, it is possible to mount the cable winding body created by this operation as a single disk body. As a result, the assemblability of the cable winding device can be improved.

[0013] Further, the fitting portion is composed of a fitting recess provided on one side of the opposing surface and a fitting protrusion provided on the other side of the opposing surface, and the fitting recess and the fitting protrusion are inserted and fitted together.

[0014] Therefore, while facilitating the operation of winding the flexible flat cable around the shaft body, it is possible to securely mount the cable winding body as a single disk body with a simple structure. As a result, the assemblability of the cable winding device can be improved.

[0015] Ma ta de, One pair of the fitting recesses and the fitting protrusions and another pair of the fitting recesses and the fitting protrusions are arranged parallel to each other. iru Note that the cross-sectional shapes of the fitting recess and the fitting protrusion are not limited to circular shapes.

[0016] Therefore , the mounting angle of the shaft body can be determined. Then, when mounting the shaft body, the operation of appropriately adjusting the mounting angle of the shaft body becomes unnecessary. Also, the shaft body does not rotate inadvertently after being mounted. As a result, the assemblability of the cable winding device can be improved.

[0017] Ma ta de, A pair of the fitting recesses and the fitting protrusions are provided on the central axis of the shaft body, and a plurality of positioning fitting recesses, which are the other fitting recesses, are provided concentrically with respect to the central axis of the shaft body. A positioning fitting protrusion, which is the other fitting protrusion, is provided concentrically with respect to the central axis of the shaft body, and any one of the positioning fitting recesses and the positioning fitting protrusion are inserted and fitted together. iru .

[0018] Therefore, the mounting angle of the shaft body can be changed. Therefore, the winding start position (the position in the circumferential direction of the shaft body) of the flexible flat cable wound around the shaft body can be changed. Accordingly, it becomes possible to stepwise change the maximum payout length of the flexible flat cable. Then, in a cable take-up device with cable specifications having different maximum payout lengths of the flexible flat cable, the work of selecting and winding a flexible flat cable with a different length becomes unnecessary. As a result, it becomes possible to improve the assemblability of the cable take-up device.

[0019] As another aspect of the present invention, a flange portion extending in the radially outer direction may be provided at the corner between the circumferential surface and the end surface of the shaft body. Note that the flange portion may be provided at either one of the corners or at both corners.

[0020] According to the present invention, when winding the flexible flat cable around the shaft body, the flexible flat cable can be guided perpendicular to the shaft body by aligning the flexible flat cable along the flange portion. Therefore, it becomes possible to wind the flexible flat cable without deviation. Accordingly, the work of winding the flexible flat cable around the shaft body becomes easier. In addition, it is possible to prevent the flexible flat cable wound around the shaft body from loosening, deviating, or unwinding. As a result, it becomes possible to improve the assemblability of the cable take-up device.

[0021] As another aspect of the present invention, among the cable wound bodies created by winding the flexible flat cable around the shaft bodies with different outer diameters, one selected cable wound body may be provided.

[0022] According to the present invention, in cable winding devices with different specifications for the maximum payout length of flexible flat cables, it becomes possible to share the housing. Further, in a cable winding device with a short maximum payout length of the flexible flat cable, if the flexible flat cable is wound around a shaft body with a large outer diameter, it becomes possible to accommodate the flexible flat cable inside the housing at an appropriate density. Thereby, it is possible to prevent the flexible flat cable from hitting the outer peripheral wall of the housing and generating abnormal noise.

[0023] Conversely, in a cable winding device with a long maximum payout length of the flexible flat cable, if the flexible flat cable is wound around a shaft body with a small outer diameter, it becomes possible to accommodate the flexible flat cable inside the housing at an appropriate density. Thereby, it is possible to prevent the outer peripheral wall of the housing and adjacent flexible flat cables from rubbing against each other and inhibiting smooth winding or payout.

[0024] As another aspect of the present invention, only a pair of the fitting concave portions and the fitting convex portions may be provided, and the cross-sectional shapes of the fitting concave portions and the fitting convex portions may be formed into non-circular shapes. Note that the non-circular shapes include polygonal shapes that can be fitted at a predetermined phase. For example, a pentagon, a hexagon, or the like. Also, a key fitting shape is included

[0025] According to the present invention, the mounting angle of the shaft body can be determined. Then, when mounting the shaft body, the operation of appropriately adjusting the mounting angle of the shaft body becomes unnecessary. Also, the shaft body does not rotate inadvertently after the shaft body is mounted. As a result, the assemblability of the cable winding device can be improved

[0026] As another aspect of the present invention, a pair of the fitting concave portions and the fitting convex portions may be provided on the central axis of the shaft body, and the cross-sectional shapes of the fitting concave portions and the fitting convex portions may be formed into rotationally symmetric shapes. Note that the rotationally symmetric shape is a shape that can be fitted at any phase, and includes, for example, regular polygonal shapes in which the lengths of each side are equal and the angles formed by two sides are also equal. That is, a regular pentagon, a regular hexagon, or the like is included. Also, not only a cross shape or a + shape, but also a star (spline) shape or the like is included

[0027] According to the present invention, the mounting angle of the shaft body can be changed. Therefore, the winding start position (position in the circumferential direction of the shaft body) of the flexible flat cable wound around the shaft body can be changed. Accordingly, it becomes possible to gradually change the maximum payout length of the flexible flat cable. Then, in a cable winding device with different specifications of the maximum payout length of the flexible flat cable, the work of selecting and winding flexible flat cables with different lengths becomes unnecessary. As a result, it becomes possible to improve the assemblability of the cable winding device.

Brief Description of the Drawings

[0028]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

[0029] One embodiment of the present invention will be described in detail based on the drawings. FIG. 1 is a perspective view of the cable winding device 1, FIG. 2 is an exploded perspective view of the cable winding device 1, FIG. 3 is a perspective view of the shaft 3, FIG. 4 is a perspective view of the lower case 5, and FIG. 5 is a perspective view of the upper cover 6.

[0030] Also, FIG. 6 is a flowchart of the assembly process of the cable winding device 1, FIG. 7 is a perspective view showing the situation of creating the cable winding body 10, FIG. 8 is a perspective view showing the situation of mounting the cable winding body 10 on the lower case 5, and FIG. 9 is a perspective view showing the situation of fitting the upper cover 6 to the lower case 5. In the present application, as shown in each drawing, the front-rear direction, the up-down direction, and the left-right direction are defined.

[0031] The cable winding device 1 according to the present invention winds or pays out the flexible flat cable 2 that is routed to the slide seat of the automobile. The flexible flat cable 2 is formed by sandwiching strip-shaped conductors 21 arranged in parallel with a sheet-shaped insulator 22. Hereinafter, the flexible flat cable 2 will be described as the FFC2.

[0032] As shown in FIGS. 1 and 2, in addition to the aforementioned FFC 2, the cable winding device 1 includes a shaft 3 and a housing 4. The housing 4 is composed of a lower case 5 and an upper cover 6. Further, the cable winding device 1 is provided with a shaft mounting portion 7 that enables the shaft 3 to be mounted on the bottom surface 5b of the lower case 5. The shaft mounting portion 7 has two fitting portions 71 and 72.

[0033] As shown in FIG. 3, the shaft 3 is formed in a cylindrical shape. The shaft 3 is provided with a slit 31 bored downward from its upper end surface 3t. The slit 31 curves along the outer peripheral surface 3c from the slit inlet of the outer peripheral surface 3c and eventually leads to a slit outlet 3o extending in the left-right direction. The shaft 3 can fix the FFC 2 fitted into the slit 31. Note that the FFC 2 is pulled out upward by being bent obliquely at the slit outlet 3o (see FIG. 7).

[0034] Also, the shaft 3 is provided with fitting holes 34 and 35 bored upward from its lower end surface 3b. The fitting hole 34 constitutes the fitting portion 71 and is formed parallel to the central axis C on the rear side of the slit outlet 3o. The fitting hole 34 has a circular cross-sectional shape and is a bottomed hole that does not penetrate to the upper end surface 3t of the shaft 3. On the other hand, the fitting hole 35 constitutes the fitting portion 72 and is formed parallel to the central axis C on the front side of the slit outlet 3o. The fitting hole 35 also has a circular cross-sectional shape and is a bottomed hole that does not penetrate to the upper end surface 3t of the shaft 3.

[0035] As shown in FIG. 4, the lower case 5 is formed in a Q shape when viewed from above. The lower case 5 has a bottom wall portion 51 and a peripheral wall portion 52 extending upward from the outer peripheral end portion of the bottom wall portion 51. The peripheral wall portion 52 is substantially cylindrical, but the right wall portion 52b in the rear portion extends in the left-right direction. Further, the rear wall portion 52r in the right wall portion extends in the front-rear direction and is bent to the right to be parallel to the wall portion 52b. Thus, a cable passage 53 extending to the right side is formed in the lower case 5.

[0036] Further, the lower case 5 is provided with fitting shafts 54 and 55 extending upward from its bottom surface 5b. The fitting shaft 54 constitutes a fitting portion 71 and is formed parallel to the central axis C at a position and size corresponding to the fitting hole 34 described above. The fitting shaft 54 has a circular cross-sectional shape and further has a tapered shape in which the diameter increases from the tip side to the base side. On the other hand, the fitting shaft 55 constitutes a fitting portion 72 and is formed parallel to the central axis C at a position and size corresponding to the fitting hole 35 described above. The fitting shaft 55 also has a circular cross-sectional shape and further has a tapered shape in which the diameter increases from the tip side to the base side.

[0037] Note that there is no wall closing the inner accommodation space at the upper end portion of the lower case 5, and an opening 5o is formed. Further, a plurality of reinforcing ribs 511 spreading radially are provided on the bottom surface 5b of the lower case 5. Furthermore, on the outer peripheral surface (peripheral wall portion 52) of the lower case 5, a fitting receiving portion 521 is provided against which the leading edge of the fitting wall portion 62 described later abuts when the upper cover 6 is fitted. The fitting receiving portion 521 is bent downward in some places and also serves to guide a locking plate portion 65 described later by two fitting receiving portions 521 that are parallel to each other along the vertical direction. A locking claw 522 is provided between the fitting receiving portions 521 extending downward.

[0038] As shown in FIG. 5, the upper cover 6 is formed in a Q shape when viewed from the upper side. The upper cover 6 has a lid wall portion 61 and a fitting wall portion 62 extending downward from the outer peripheral end portion of the lid wall portion 61. The fitting wall portion 62 is substantially cylindrical, but the right wall portion 62b in the rear portion extends in the left-right direction. Also, the rear wall portion 62r in the right wall portion extends in the front-rear direction and bends to the right to be parallel to the wall portion 62b. In this way, a lid portion 63 that covers the cable passage 53 of the lower case 5 described above is formed on the upper cover 6.

[0039] Further, a slit 64 penetrating from the front surface 6f to the back surface 6b is provided on the upper cover 6 from the left portion to the central portion. The slit 64 is for passing the FFC 2 drawn upward from the shaft 3. Furthermore, a locking plate portion 65 extending further downward from the fitting wall portion 62 is provided on the upper cover 6. The locking plate portion 65 is formed parallel to the central axis C at a position corresponding to the locking claw 522 described above. The locking plate portion 65 has a plate width that fits between two fitting receiving portions 521 that are parallel to each other along the vertical direction, and further, a locking hole 652 penetrating from the inner peripheral surface to the outer peripheral surface is formed.

[0040] Next, the assembly process of the cable winding device 1 will be described. As shown in FIG. 6, in the assembly process of the cable winding device 1, there are a cable winding body creation process S1, a cable winding body mounting process S2, and an upper cover fitting process S3, and these are performed in order. However, there may be other processes not described in the present application.

[0041] As shown in FIG. 7, the cable reel body creating step S1 is a step of creating the cable reel body 10. In the cable reel body creating step S1, the shaft 3 is attached to the drive shaft S and rotated, and the FFC2 is wound around the shaft 3. With such a configuration, since it is not necessary to bypass the peripheral wall portion 52 of the lower case 5, the FFC2 can be wound around the shaft 3 perpendicularly. In order to wind the FFC2 without deviation, it is preferable to guide the running FFC2 with a guide roller or the like.

[0042] As shown in FIG. 8, the cable reel body mounting step S2 is a step of mounting the cable reel body 10 at a predetermined position inside the lower case 5. In the cable reel body mounting step S2, the shaft 3 at the center of the cable reel body 10 is mounted at a predetermined position on the bottom surface 5b of the lower case 5. Specifically described, the fitting hole 34 and the fitting shaft 54 that constitute the fitting portion 71 are fitted together, and at the same time, the fitting hole 35 and the fitting shaft 55 that constitute the fitting portion 72 are fitted together. With such a configuration, the cable reel body 10 can be mounted as a single disk body.

[0043] As shown in FIG. 9, the upper cover fitting step S3 is a step of fitting the upper cover 6 to the lower case 5. In the upper cover fitting step S3, the upper cover 6 is placed over the lower case 5 on which the cable reel body 10 is mounted and locked to each other. Specifically described, the locking plate portion 65 of the upper cover 6 is fitted between two fitting receiving portions 521 that are parallel to each other along the vertical direction, and the locking claw 522 is hooked on the locking hole 652 by pushing it in as it is. With such a configuration, the opening 5o of the lower case 5 can be closed, and at the same time, the shaft 3 (cable reel body 10) can be pressed so as not to come out by the back surface 6b of the upper cover 6. The back surface 6b of the upper cover 6 is a plane perpendicular to the vertical direction in order to press the shaft 3 (cable reel body 10) with a surface.

[0044] As described above, the cable winding device 1 includes an FFC 2, a shaft 3 for fixing the FFC 2, and a housing 4 (a lower case 5 and an upper cover 6) that houses the shaft 3 and the FFC 2 wound around the shaft 3. The cable winding device 1 is provided with a shaft mounting portion 7 that enables the shaft 3 to be mounted at a predetermined position inside the lower case 5.

[0045] Also, in the assembly process of the cable winding device 1, a cable winding body creating step S1 of winding the FFC 2 around the shaft 3 to create a cable winding body 10 and a cable winding body mounting step S2 of mounting the cable winding body 10 at a predetermined position inside the lower case 5 are performed.

[0046] According to such a cable winding device 1 and its assembly method, the FFC 2 can be easily wound around the shaft 3, and thus the assemblability of the cable winding device 1 can be improved.

[0047] Specifically, according to the cable winding device 1 according to the present invention, it is possible to wind the FFC 2 around the shaft 3 with the shaft 3 removed from the lower case 5. Therefore, when winding the FFC 2, it is not necessary to bypass the peripheral wall portion 52 of the lower case 5, so it is possible to guide the FFC 2 perpendicular to the shaft 3 and wind it by rotating the shaft 3. Accordingly, the FFC 2 can be easily wound around the shaft 3. Also, regarding the automation of the same operation, it is possible to attach the shaft 3 to the drive shaft S and rotate it to wind the FFC 2 around the shaft 3. Therefore, it is easy to automate the operation of winding the FFC 2 around the shaft 3. As a result, the assemblability of the cable winding device 1 can be improved.

[0048] Also, in the cable winding device 1, the housing 4 is composed of a lower case 5 and an upper cover 6 that is fitted to the lower case 5 to close the opening 5o, and the shaft mounting portion 7 has two fitting portions 71 and 72 that fit the lower end surface 3b of the shaft 3 and the bottom surface 5b of the lower case 5.

[0049] According to such a cable winding device 1, the one obtained by winding the FFC 2 around the shaft 3 (the cable winding body 10 described above) can be mounted at a predetermined position on the bottom surface 5b of the lower case 5. Therefore, while facilitating the operation of winding the FFC 2 around the shaft 3, it is possible to mount the cable winding body 10 created by this operation as a single disk body. As a result, the assemblability of the cable winding device 1 can be improved.

[0050] Also, in the cable winding device 1, the fitting portions 71 and 72 are composed of fitting holes 34 and 35 provided on the lower end surface 3b of the shaft 3 and fitting shafts 54 and 55 provided on the bottom surface 5b of the lower case 5, and the fitting holes 34 and 35 and the fitting shafts 54 and 55 are inserted and fitted.

[0051] According to such a cable winding device 1, while facilitating the operation of winding the FFC 2 around the shaft 3, it is possible to reliably mount the cable winding body 10 as a single disk body with a simple configuration. As a result, the assemblability of the cable winding device 1 can be improved.

[0052] Also, in the cable winding device 1, a pair of fitting holes 34 and fitting shafts 54 and another pair of fitting holes 35 and fitting shafts 55 are arranged parallel to each other. Note that the cross-sectional shapes of the fitting holes 34, 35 and the fitting shafts 54, 55 are circular, but are not limited thereto.

[0053] According to such a cable winding device 1, the mounting angle of the shaft 3 can be determined. Then, when mounting the shaft 3, the operation of appropriately adjusting the mounting angle of the shaft 3 becomes unnecessary. Also, the shaft 3 will not rotate inadvertently after being mounted. As a result, it becomes possible to improve the assemblability of the cable winding device 1.

[0054] In the correspondence between the configuration of this invention and the above-described embodiment, the cable winding device of this invention corresponds to the cable winding device 1, Similarly hereinafter, the flexible flat cable corresponds to the FFC 2, the shaft body corresponds to the shaft 3, the end face of the shaft body corresponds to the lower end face 3b, the housing corresponds to the housing 4, the lower case corresponds to the lower case 5, the bottom surface of the lower case corresponds to the bottom surface 5b, the upper cover corresponds to the upper cover 6, the back surface of the upper cover corresponds to the back surface 6b, the shaft body mounting portion corresponds to the shaft body mounting portion 7, the cable winding body corresponds to the cable winding body 10, the fitting recess corresponds to the fitting holes 34, 35, the fitting convex portion corresponds to the fitting shafts 54, 55, the fitting portion corresponds to the fitting portions 71, 72, the step of creating the cable winding body corresponds to the cable winding body creation step S1, the step of mounting the cable winding body at a predetermined position inside the housing corresponds to the cable winding body mounting step S2. However, this invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.

[0055] For example, in the cable winding device 1, the outer peripheral surface 3c of the shaft 3 is formed in a cylindrical shape except for the slit inlet described above. However, as shown in FIG. 10, a flange portion 36 extending in the radially outer direction may be provided at the corner between the outer peripheral surface 3c of the shaft 3 and its respective end surfaces 3t, 3b. Note that the flange portion 36 may be provided at the corner on either one side or at the corners on both sides.

[0056] According to the cable winding device 1 according to such an embodiment, when winding the FFC 2 around the shaft 3, the FFC 2 can be guided perpendicular to the shaft 3 by causing the FFC 2 to follow along the flange portion 36. Therefore, it becomes possible to wind the FFC 2 without deviation. Accordingly, the operation of winding the FFC 2 around the shaft 3 becomes easier. In addition, it is possible to prevent the FFC 2 wound around the shaft 3 from loosening, deviating, or coming apart. As a result, it becomes possible to improve the assemblability of the cable winding device 1.

[0057] Also, as described above, in the cable winding device 1, a structure is adopted in which a pair of fitting holes 34 and fitting shafts 54 and another pair of fitting holes 35 and fitting shafts 55 are arranged parallel to each other. However, as shown in FIG. 11, a pair of fitting holes 34 and fitting shafts 54 are provided on the central axis C of the shaft 3, a plurality of positioning fitting holes 35, which are other fitting holes, are provided concentrically with respect to the central axis C of the shaft 3, and positioning fitting shafts 55, which are other fitting shafts, are provided concentrically with respect to the central axis C of the shaft 3. Any one of the positioning fitting holes 35 and the positioning fitting shaft 55 may be inserted and fitted together.

[0058] According to the cable winding device 1 according to such an embodiment, the mounting angle of the shaft 3 can be changed (see the arrow R in FIG. 11). Therefore, the winding start position of the FFC 2 wound around the shaft 3 (the position in the circumferential direction of the shaft 3) can be changed. Accordingly, it becomes possible to stepwise change the maximum payout length of the FFC 2. Then, in the cable winding device 1 with different specifications of the maximum payout length of the FFC 2, the work of selecting the FFC 2 with different lengths and winding it is no longer necessary. As a result, it becomes possible to improve the assemblability of the cable winding device 1.

[0059] However, if the mounting angle of the shaft 3 is changed, the phase of the FFC 2 drawn out from the shaft 3 upward will change. Therefore, for the upper cover 6, it is necessary to use one corresponding to the mounting angle of the shaft 3. That is, for the drilling direction of the slit 64, it is necessary to use one corresponding to the mounting angle of the shaft 3. Even considering this point, since the shaft 3 and the lower case 5 are common, it becomes possible to improve the assemblability.

[0060] Also, as described above, in the cable winding device 1, a structure is adopted in which a pair of fitting holes 34 and fitting shafts 54 and another pair of fitting holes 35 and fitting shafts 55 are arranged parallel to each other. However, as shown in FIG. 12, only a pair of fitting holes 34 and fitting shafts 54 may be provided, and the cross-sectional shapes of the fitting holes 34 and fitting shafts 54 may be formed in a non-circular shape. Note that the non-circular shape includes polygonal shapes that can be fitted at a predetermined phase. For example, a regular pentagon, a regular hexagon, etc. Also, a key fitting shape is included.

[0061] According to the cable winding device 1 according to such an embodiment, the mounting angle of the shaft 3 can be determined. Then, when mounting the shaft 3, the work of appropriately adjusting the mounting angle of the shaft 3 is no longer necessary. Also, the shaft 3 will not rotate inadvertently after the shaft 3 is mounted. As a result, it becomes possible to improve the assemblability of the cable winding device 1.

[0062] Also, as described above, in the cable take-up device 1, a structure is adopted in which a pair of fitting holes 34 and fitting shafts 54 and another pair of fitting holes 35 and fitting shafts 55 are arranged parallel to each other. However, as shown in FIG. 13, a pair of fitting holes 34 and fitting shafts 54 may be provided on the central axis C of the shaft 3, and the cross-sectional shapes of the fitting holes 34 and fitting shafts 54 may be formed in a rotationally symmetric shape. The rotationally symmetric shape is a shape that can be fitted at any phase, and includes, for example, a regular polygon in which the lengths of each side are equal and the angles formed by two sides are also equal. That is, it includes a regular pentagon, a regular hexagon, etc. Also, not only a cross shape and a + shape, but also a star (spline) shape, etc. shall be included.

[0063] According to the cable take-up device 1 according to such an embodiment, the mounting angle of the shaft 3 can be changed (see the arrow R in FIG. 13). Therefore, the winding start position (position in the circumferential direction of the shaft 3) of the FFC 2 wound around the shaft 3 can be changed. Accordingly, it becomes possible to stepwise change the maximum payout length of the FFC 2. Then, in the cable take-up device 1 with different specifications of the maximum payout length of the FFC 2, the work of selecting the FFC 2 with different lengths and winding it is no longer necessary. As a result, the assemblability of the cable take-up device 1 can be improved.

[0064] Furthermore, as described above, in the cable take-up device 1, among the cable winding bodies 10 created by winding the FFC 2 around the shafts 3 with different outer diameters, one selected cable winding body 10 may be provided.

[0065] According to the cable take-up device 1 according to such an embodiment, in the cable take-up device 1 with different specifications of the maximum payout length of the FFC 2, it becomes possible to make the lower case 5 and the upper cover 6 common. Also, in the cable take-up device 1 with a short maximum payout length of the FFC 2, if the FFC 2 is wound around a shaft 3 with a large outer diameter, it becomes possible to accommodate the FFC 2 at an appropriate density inside the lower case 5. Thereby, it is possible to prevent the FFC 2 from hitting the outer peripheral wall 42 of the lower case 5 and generating abnormal noise.

[0066] On the contrary, in a cable take-up device with a long maximum payout length of FFC2, if FFC2 is wound around a shaft 3 with a small outer diameter, it becomes possible to accommodate FFC2 at an appropriate density inside the lower case 5. This can prevent the outer peripheral wall 42 of the lower case 5 and adjacent FFC2s from rubbing against each other and inhibiting smooth take-up or payout.

Explanation of Reference Numerals

[0067] 1... Cable take-up device 2... Flexible flat cable 3... Shaft 4... Housing 5... Lower case 6... Upper cover 7... Shaft mounting portion 10... Cable winding body 34... Fitting hole 35... Fitting hole 54... Fitting shaft 55... Fitting shaft 71... Fitting portion 72... Fitting portion 3b... Lower end face of the shaft 5b... Bottom surface of the lower case 6b... Back surface of the upper cover S1... Cable winding body creation process S2... Cable winding body mounting process

Claims

1. A flexible flat cable a shaft body for fixing the flexible flat cable; A cable winding device comprising: a housing that houses the shaft body and the flexible flat cable wound around the shaft body, a shaft attachment portion is provided to enable the shaft to be attached to a predetermined position inside the housing, The housing is composed of a lower case and an upper cover that is fitted to the lower case to close the opening, the shaft mounting portion has a fitting portion that fits an end surface of the shaft with at least a bottom surface of the lower case or a back surface of the upper cover that faces the bottom surface, the fitting portion is composed of a fitting recess provided on one side of the opposing surfaces and a fitting protrusion provided on the other side of the opposing surfaces, The fitting recess and the fitting protrusion are inserted and fitted together, a pair of the fitting recesses and the fitting protrusions and another pair of the fitting recesses and the fitting protrusions are arranged parallel to each other, a pair of the fitting recess and the fitting protrusion are provided on a central axis of the shaft body, A plurality of positioning fitting recesses, which are the other fitting recesses, are provided concentrically with respect to the central axis of the shaft body, a positioning fitting protrusion, which is another fitting protrusion, is provided on the concentric circle with respect to the central axis of the shaft body, Any one of the positioning fitting recesses and the positioning fitting protrusions is inserted and fitted. Cable winding device.

2. A flange portion extending radially outward is provided at a corner between the peripheral surface and the end surface of the shaft body.

2. A cable winding device according to claim 1.

3. The cable winding body is provided with one of the cable winding bodies selected from among the cable winding bodies produced by winding the flexible flat cable around the shaft bodies having different outer diameters. The cable winding device according to claim 1 or 2.

4. A flexible flat cable a shaft body for fixing the flexible flat cable; A method for assembling a cable winding device including a shaft body and a housing that accommodates the flexible flat cable wound around the shaft body, comprising the steps of: a step of winding the flexible flat cable around the shaft to create a cable winding body; and attaching the cable winding body to a predetermined location inside the housing, The housing is composed of a lower case and an upper cover that is fitted to the lower case to close the opening, the shaft mounting portion has a fitting portion that fits an end surface of the shaft with at least a bottom surface of the lower case or a back surface of the upper cover that faces the bottom surface, The fitting portion is composed of a fitting recess provided on one side of the opposing surfaces and a fitting protrusion provided on the other side of the opposing surfaces, The fitting recess and the fitting protrusion are inserted and fitted together, a pair of the fitting recesses and the fitting protrusions and another pair of the fitting recesses and the fitting protrusions are arranged parallel to each other, a pair of the fitting recess and the fitting protrusion are provided on a central axis of the shaft body, A plurality of positioning fitting recesses, which are other fitting recesses, are provided concentrically with respect to a central axis of the shaft body, a positioning fitting protrusion, which is another fitting protrusion, is provided on the concentric circle with respect to the central axis of the shaft body; Any one of the positioning fitting recesses and the positioning fitting protrusions is inserted and fitted. A method for assembling a cable winding device.

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