Cable winding device and method for assembling the cable winding device

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 assembly property. [Means for solving the problem]

[0007] This invention relates to a cable winding device comprising a flexible flat cable, a shaft for fixing the flexible flat cable, and a housing for housing the shaft and the flexible flat cable wound around the shaft, wherein the device is provided with a shaft mounting section that allows the shaft to be mounted at a predetermined location inside the housing. 、 The housing consists of a lower case and an upper cover fitted to the lower case to close the opening, and the shaft mounting portion has a fitting portion that fits the end face of the shaft with 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. The fitting A recessed portion and the other side of the opposing surface are provided. The fitting It is composed of a convex part and a concave part, before The fitting recess and the fitting projection are inserted and fitted together. A pair of fitting recesses and fitting protrusions and another pair of fitting recesses and fitting protrusions are arranged parallel to each other, a pair of fitting recesses and fitting protrusions are provided on the central axis of the shaft, a plurality of other positioning fitting recesses are provided concentrically with respect to the central axis of the shaft, and other positioning fitting protrusions are provided concentrically with respect to the central axis of the shaft, and any of the positioning fitting recesses and positioning fitting protrusions are inserted and fitted together. It is characterized by the following.

[0008] Furthermore, this invention relates to a method for assembling a cable winding device, comprising the steps of: creating a cable winding body by winding the flexible flat cable around the shaft body; and placing the cable winding body at a predetermined location inside the housing. To install The process of attaching death, The housing consists of a lower case and an upper cover fitted to the lower case to close the opening, and the shaft mounting portion has a fitting portion that fits the end face of the shaft with 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. The fitting A recessed portion and the other side of the opposing surface are provided. The fitting It is composed of a convex part and a concave part, before The fitting recess and the fitting protrusion are inserted and fitted together. The pair of fitting recesses and fitting protrusions and the other pair of fitting recesses and fitting protrusions are arranged parallel to each other, the pair of fitting recesses and fitting protrusions are provided on the central axis of the shaft, a plurality of positioning fitting recesses which are other fitting recesses are provided concentrically with respect to the central axis of the shaft, and positioning fitting protrusions which are other fitting protrusions are provided concentrically with respect to the central axis of the shaft, and any of the positioning fitting recesses and positioning fitting protrusions are inserted and fitted together It is characterized by doing so.

[0009] This invention makes it possible to easily wind a flexible flat cable around a shaft, thereby improving the ease of assembly of the cable winding device.

[0010] More specifically, the cable winding device according to the present invention makes it possible to wind a flexible flat cable around the shaft while the shaft is detached from the housing. Therefore, since there is no need to avoid the peripheral wall of the housing when winding the flexible flat cable, it is possible to guide the flexible flat cable perpendicular to the shaft and wind it by rotating the shaft. Thus, the flexible flat cable can be easily wound around the shaft. Furthermore, regarding the automation of this process, it is possible to attach the shaft to a drive shaft and rotate it to wind the flexible flat cable around the shaft. Thus, it becomes easier to automate the process of winding the flexible flat cable around the shaft. In turn, it becomes possible to improve the ease of assembly of the cable winding device.

[0011] Furthermore, the housing is composed of a lower case and an upper cover that fits into the lower case and closes the opening, and the shaft mounting portion has a fitting portion that fits the end face of the shaft with at least the bottom surface of the lower case or the back surface of the upper cover facing the bottom surface.

[0012] Therefore, a flexible flat cable wrapped around the shaft (the aforementioned cable winding body) can be attached to a predetermined location on the bottom surface of the lower case or on the back surface of the upper cover facing the bottom surface. This makes it easier to wrap the flexible flat cable around the shaft, and allows the resulting cable winding body to be attached as a single disc. In turn, it is possible to improve the ease of assembly of the cable winding device.

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

[0014] Therefore, it becomes easier to wrap the flexible flat cable around the shaft, and it is possible to securely attach the cable winding body as a single disc-shaped object despite its simple configuration. In turn, it becomes possible to improve the ease of assembly of the cable winding device.

[0015] Ma Ta, A pair of fitting recesses and fitting protrusions and another pair of fitting recesses and fitting protrusions are arranged parallel to each other. There are Furthermore, the cross-sectional shape of the mating recess and mating protrusion is not limited to a circular shape.

[0016] Therefore This allows the mounting angle of the shaft to be determined. As a result, the work of adjusting the mounting angle of the shaft when installing it is unnecessary. Furthermore, the shaft will not rotate unintentionally after installation. Ultimately, this improves the ease of assembly of the cable winding device.

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

[0018] ThereforeThe 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 gradually change the maximum payout length of the flexible flat cable. Then, in cable take-up devices with different specifications for 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 assembly property of the cable take-up device.

[0019] As another aspect of this 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 the corner on either one side or both corners.

[0020] According to this 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. Also, it is possible to prevent the flexible flat cable wound around the shaft body from loosening, deviating, or coming undone. As a result, it becomes possible to improve the assembly property of the cable take-up device.

[0021] As another aspect of this 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] This invention makes it possible to standardize the housing of cable winding devices with different specifications for the maximum payout length of flexible flat cables. Furthermore, in cable winding devices with a short maximum payout length of flexible flat cables, winding the flexible flat cable around a shaft with a large outer diameter allows the flexible flat cable to be housed inside the housing at an appropriate density. This prevents the flexible flat cable from hitting the outer wall of the housing and generating abnormal noise.

[0023] Conversely, in cable winding devices with a long maximum payout length for flexible flat cables, winding the flexible flat cable around a shaft with a small outer diameter allows for the flexible flat cable to be housed inside the enclosure at an appropriate density. This prevents friction between the outer wall of the enclosure and adjacent flexible flat cables, which can hinder smooth winding or unwinding.

[0024] In another aspect of this invention, only a pair of fitting recesses and fitting protrusions may be provided, and the cross-sectional shapes of the fitting recesses and fitting protrusions may be formed in a non-circular shape. The non-circular shape includes polygonal shapes that can be fitted in a predetermined phase, such as pentagons and hexagons. It also includes key-fitting shapes.

[0025] This invention makes it possible to determine the mounting angle of the shaft. This eliminates the need to adjust the mounting angle of the shaft when installing it. Furthermore, the shaft will not rotate unintentionally after installation. In turn, it is possible to improve the ease of assembly of the cable winding device.

[0026] In another aspect of this invention, a pair of fitting recesses and fitting protrusions may be provided on the central axis of the shaft, and the cross-sectional shapes of the fitting recesses and fitting protrusions may be formed to be rotationally symmetric. A rotationally symmetric shape is a shape that can be fitted at any phase, and includes, for example, regular polygons in which the lengths of each side are equal and the angles between two sides are also equal. That is, it includes regular pentagons and regular hexagons, etc. Furthermore, it includes not only - shapes and + shapes, but also star shapes (spline shapes), etc.

[0027] This invention allows for changing the mounting angle of the shaft. Therefore, the starting position (circumferential position of the shaft) of the flexible flat cable wound around the shaft can be changed. Consequently, the maximum payout length of the flexible flat cable can be changed in stages. This eliminates the need to select and wind flexible flat cables of different lengths in cable winding devices with different specifications for maximum payout lengths. Ultimately, this improves the ease of assembly of the cable winding device. [Brief explanation of the drawing]

[0028] [Figure 1] Perspective view of a cable winding device. [Figure 2] Exploded perspective view of a cable winding device. [Figure 3] Perspective view of the shaft. [Figure 4] Perspective view of the lower case. [Figure 5] Perspective view of the upper cover. [Figure 6] Flowchart of the assembly process for a cable winding device. [Figure 7]A perspective view showing the process of creating a cable winding body. [Figure 8] A perspective view showing the cable winding assembly attached to the lower case. [Figure 9] A perspective view showing the upper cover fitted into the lower case. [Figure 10] A perspective view showing a shaft according to another embodiment. [Figure 11] A perspective view of the shaft and lower case according to another embodiment. [Figure 12] A perspective view of the shaft and lower case according to another embodiment. [Figure 13] A perspective view of the shaft and lower case according to another embodiment. [Figure 14] A perspective view of a cable winding body using a shaft according to another embodiment.

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

[0030] Furthermore, Figure 6 is a flowchart of the assembly process of the cable winding device 1, Figure 7 is a perspective view showing the state in which the cable winding body 10 is being manufactured, Figure 8 is a perspective view showing the state in which the cable winding body 10 is being attached to the lower case 5, and Figure 9 is a perspective view showing the state in which the upper cover 6 is being fitted to the lower case 5. In this application, the front-rear direction, the up-down direction, and the left-right direction are defined as shown in each drawing.

[0031] The cable winding device 1 according to the present invention winds up or unwinds a flexible flat cable 2 routed to a sliding seat of an automobile. The flexible flat cable 2 consists of parallel strip-shaped conductive materials 21 sandwiched between sheet-shaped insulators 22. Hereafter, the flexible flat cable 2 will be referred to as FFC2.

[0032] As shown in Figures 1 and 2, the cable winding device 1 includes a shaft 3 and a housing 4 in addition to the FFC 2 described above. The housing 4 is composed of a lower case 5 and an upper cover 6. The cable winding device 1 also has a shaft mounting section 7 that allows the shaft 3 to be attached to the bottom surface 5b of the lower case 5. The shaft mounting section 7 has two fitting sections 71 and 72.

[0033] As shown in Figure 3, the shaft 3 is formed in a cylindrical shape. The shaft 3 has a slit 31 drilled downward from its upper end surface 3t. The slit 31 curves along the outer surface 3c from the slit entrance on the outer surface 3c and eventually connects to a slit exit 3o that extends in the left-right direction. The shaft 3 can fix the FFC 2 that is fitted into the slit 31. The FFC 2 is bent diagonally at the slit exit 3o and pulled upward (see Figure 7).

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

[0035] As shown in Figure 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 that extends upward from the outer peripheral end of the bottom wall portion 51. The peripheral wall portion 52 is almost cylindrical, but the right side wall portion 52b in the rear part extends in the left-right direction. In addition, the rear side wall portion 52r in the right wall portion extends in the front-rear direction and is bent to the right so as to be parallel to the wall portion 52b. In this way, a cable passage 53 extending to the right is formed in the lower case 5.

[0036] Furthermore, the lower case 5 is provided with fitting shafts 54 and 55 extending upward from its bottom surface 5b. The fitting shaft 54 ​​constitutes the 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 is tapered, with its diameter increasing from the tip to the base. On the other hand, the fitting shaft 55 constitutes the 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 is tapered, with its diameter increasing from the tip to the base.

[0037] Furthermore, the upper end of the lower case 5 does not have a wall that closes the inner storage space, and an opening 5o is formed. In addition, the bottom surface 5b of the lower case 5 is provided with multiple reinforcing ribs 511 that spread radially. Moreover, the outer circumferential surface (peripheral wall portion 52) of the lower case 5 is provided with fitting receiving portions 521 that the leading edge of the fitting wall portion 62, which will be described later, abuts against when the upper cover 6 is fitted. The fitting receiving portions 521 are bent downwards in places, and the two fitting receiving portions 521 that are parallel to each other along the vertical direction also serve to guide the locking plate portion 65, which will be described later. Locking claws 522 are provided between the fitting receiving portions 521 that extend downwards.

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

[0039] Furthermore, the upper cover 6 has a slit 64 that penetrates from its surface 6f to its back surface 6b, extending from the left side to the center. The slit 64 is for passing the FFC2, which is pulled upward from the shaft 3, through. In addition, the upper cover 6 is provided with a locking plate portion 65 that extends further downward from its fitting wall portion 62. The locking plate portion 65 is formed parallel to the central axis C at a position corresponding to the aforementioned locking claw 522. The locking plate portion 65 has a plate width that fits between two fitting receiving portions 521 that are parallel to each other in the vertical direction, and furthermore, a locking hole 652 is formed that penetrates from the inner circumferential surface to the outer circumferential surface.

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

[0041] As shown in Figure 7, the cable winding body creation process S1 is the process of creating the cable winding body 10. In the cable winding body creation process S1, the shaft 3 is attached to the drive shaft S and rotated, and the FFC 2 is wound around the shaft 3. With this configuration, there is no need to avoid the peripheral wall portion 52 of the lower case 5, so it is possible to wind the FFC 2 perpendicular to the shaft 3. In order to wind the FFC 2 without misalignment, it is preferable to guide the moving FFC 2 with guide rollers or the like.

[0042] As shown in Figure 8, the cable winding assembly mounting process S2 is the process of mounting the cable winding assembly 10 to a predetermined location inside the lower case 5. In the cable winding assembly mounting process S2, the shaft 3 at the center of the cable winding assembly 10 is mounted to a predetermined location on the bottom surface 5b of the lower case 5. Specifically, the fitting hole 34 constituting the fitting portion 71 and the fitting shaft 54 ​​are fitted together, and at the same time, the fitting hole 35 constituting the fitting portion 72 and the fitting shaft 55 are fitted together. With this configuration, the cable winding assembly 10 can be mounted as a single disc.

[0043] As shown in Figure 9, the upper cover fitting process S3 is the process of fitting the upper cover 6 onto the lower case 5. In the upper cover fitting process S3, the upper cover 6 is placed over the lower case 5 on which the cable winding body 10 is attached and locked together. Specifically, the locking plate portion 65 of the upper cover 6 is fitted between two fitting receiving portions 521 that are parallel to each other in the vertical direction, and the locking claws 522 are hooked into the locking holes 652 by pushing it in. With this configuration, the opening 5o of the lower case 5 can be closed, and at the same time, the back surface 6b of the upper cover 6 can hold the shaft 3 (cable winding body 10) in place so that it does not come out. The back surface 6b of the upper cover 6 is a plane perpendicular to the vertical direction in order to hold the shaft 3 (cable winding body 10) in place 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 (lower case 5 and upper cover 6) for housing the shaft 3 and the FFC 2 wound around the shaft 3. The cable winding device 1 is also provided with a shaft mounting section 7 that allows the shaft 3 to be mounted at a predetermined location inside the lower case 5.

[0045] Furthermore, the cable winding device 1 performs two assembly steps: a cable winding body creation step S1 in which FFC2 is wound around the shaft 3 to create a cable winding body 10, and a cable winding body mounting step S2 in which the cable winding body 10 is mounted to a predetermined location inside the lower case 5.

[0046] With this cable winding device 1 and its assembly method, the FFC2 can be easily wound around the shaft 3, thereby improving the ease of assembly of the cable winding device 1.

[0047] More specifically, according to the cable winding device 1 of the present invention, it is possible to wind the FFC2 around the shaft 3 with the shaft 3 removed from the lower case 5. Therefore, when winding the FFC2, there is no need to avoid the peripheral wall portion 52 of the lower case 5, and it is possible to guide the FFC2 perpendicular to the shaft 3 and wind it by rotating the shaft 3. Thus, the FFC2 can be easily wound around the shaft 3. Furthermore, regarding the automation of this work, it is possible to attach the shaft 3 to the drive shaft S and rotate it to wind the FFC2 around the shaft 3. Thus, it becomes easy to automate the work of winding the FFC2 around the shaft 3. In turn, it is possible to improve the ease of assembly of the cable winding device 1.

[0048] Furthermore, in the cable winding device 1, the housing 4 is composed of a lower case 5 and an upper cover 6 that fits into the lower case 5 and closes 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] With this cable winding device 1, the FFC2 wrapped around the shaft 3 (the aforementioned cable winding body 10) can be attached to a predetermined location on the bottom surface 5b of the lower case 5. Therefore, the work of wrapping the FFC2 around the shaft 3 is made easier, and the resulting cable winding body 10 can be attached as a single disc. In turn, the ease of assembly of the cable winding device 1 can be improved.

[0050] Furthermore, in the cable winding device 1, the fitting portions 71 and 72 consist 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 together.

[0051] With this cable winding device 1, the process of winding the FFC 2 around the shaft 3 is made easier, and the cable winding body 10 can be reliably mounted as a single disc-shaped body despite its simple configuration. This, in turn, improves the ease of assembly of the cable winding device 1.

[0052] Furthermore, 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. The cross-sectional shape of the fitting holes 34, 35 and fitting shafts 54, 55 is circular, but is not limited to this.

[0053] With this cable winding device 1, the mounting angle of the shaft 3 can be determined. This eliminates the need to adjust the mounting angle of the shaft 3 when installing it. Furthermore, the shaft 3 will not rotate unintentionally after installation. Ultimately, this improves the ease of assembly of the cable winding device 1.

[0054] In the correspondence between the structure of this invention and the embodiments described above, the cable winding device of this invention corresponds to the cable winding device 1, The same applies to the following: The flexible flat cable is compatible with FFC2. The shaft corresponds to shaft 3, The end face of the shaft body corresponds to the lower end face 3b, The enclosure is compatible with enclosure 4. The lower case is compatible with lower case 5. The bottom of the lower case corresponds to bottom 5b. The upper cover is compatible with upper cover 6. The back of the upper cover corresponds to back 6b, The shaft mounting section corresponds to the shaft mounting section 7. The cable winding body corresponds to the cable winding body 10. The mating recesses correspond to the mating holes 34 and 35. The mating protrusions correspond to the mating shafts 54 and 55. The mating portion corresponds to the mating portions 71 and 72. The process of creating the cable winding body corresponds to the cable winding body creation process S1. The process of attaching the cable winding body to a predetermined location inside the housing corresponds to the cable winding body attachment process S2. However, this invention is not limited to the configuration of the above-described embodiment, and many other embodiments can be obtained.

[0055] For example, in the cable winding device 1, the outer circumferential surface 3c of the shaft 3 is formed in a cylindrical shape except for the slit inlet mentioned above. However, as shown in Figure 10, flange portions 36 extending radially outward may be provided at the corners between the outer circumferential surface 3c of the shaft 3 and its respective end faces 3t, 3b. The flange portions 36 may be provided at either one corner or at both corners.

[0056] According to this embodiment of the cable winding device 1, when winding the FFC2 around the shaft 3, the FFC2 can be guided perpendicular to the shaft 3 by following the flange portion 36. Therefore, it is possible to wind the FFC2 without misalignment. Consequently, the work of winding the FFC2 around the shaft 3 becomes even easier. In addition, it is possible to prevent the FFC2 wound around the shaft 3 from loosening, shifting, or unraveling. Ultimately, this makes it possible to improve the ease of assembly of the cable winding device 1.

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

[0058] According to this embodiment of the cable winding device 1, the mounting angle of the shaft 3 can be changed (see arrow R in Figure 11). Therefore, the starting position of winding the FFC 2 around the shaft 3 (the position in the circumferential direction of the shaft 3) can be changed. Consequently, the maximum payout length of the FFC 2 can be changed in stages. This eliminates the need to select and wind FFC 2 of different lengths in cable winding devices 1 with different specifications for maximum payout lengths of FFC 2. In turn, it becomes possible to improve the ease of assembly of the cable winding device 1.

[0059] However, changing the mounting angle of shaft 3 will alter the phase of FFC2, which is pulled upward from shaft 3. Therefore, the upper cover 6 must be one that corresponds to the mounting angle of shaft 3. In other words, the direction of drilling the slit 64 must be one that corresponds to the mounting angle of shaft 3. Even considering this point, since shaft 3 and lower case 5 are common, it is possible to improve ease of assembly.

[0060] Furthermore, as mentioned above, the cable winding device 1 has a structure 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 Figure 12, only a pair of fitting holes 34 and fitting shafts 54 may be provided, and the cross-sectional shape of the fitting holes 34 and fitting shafts 54 may be formed in a non-circular shape. The non-circular shape shall include polygonal shapes that can be fitted at a predetermined phase. For example, regular pentagons and regular hexagons. It shall also include key fitting shapes.

[0061] According to this embodiment of the cable winding device 1, the mounting angle of the shaft 3 can be determined. This eliminates the need to adjust the mounting angle of the shaft 3 when mounting it. Furthermore, the shaft 3 will not rotate unintentionally after being mounted. Ultimately, this improves the ease of assembly of the cable winding device 1.

[0062] Furthermore, as mentioned above, the cable winding device 1 has a structure 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 Figure 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 shape of the fitting holes 34 and fitting shafts 54 may be formed to be rotationally symmetric. A rotationally symmetric shape is a shape that can be fitted at any phase, and includes, for example, regular polygons in which the length of each side is equal and the angle between two sides is also equal. In other words, it includes regular pentagons and regular hexagons, etc. Furthermore, it includes not only - shapes and + shapes, but also star shapes (spline shapes), etc.

[0063] According to this embodiment of the cable winding device 1, the mounting angle of the shaft 3 can be changed (see arrow R in Figure 13). Therefore, the starting position of winding the FFC 2 around the shaft 3 (the position in the circumferential direction of the shaft 3) can be changed. Consequently, the maximum payout length of the FFC 2 can be changed in stages. This eliminates the need to select and wind FFC 2 of different lengths in cable winding devices 1 with different specifications for maximum payout lengths of FFC 2. In turn, it becomes possible to improve the ease of assembly of the cable winding device 1.

[0064] Furthermore, as mentioned above, the cable winding device 1 may include one selected cable winding body 10 from among those created by winding FFC2 around shafts 3 of different outer diameters.

[0065] According to this embodiment of the cable winding device 1, it is possible to use the same lower case 5 and upper cover 6 for cable winding devices 1 with different specifications for the maximum payout length of the FFC2. Furthermore, in cable winding devices 1 with a short maximum payout length of the FFC2, if the FFC2 is wound around a shaft 3 with a large outer diameter, it is possible to accommodate the FFC2 inside the lower case 5 at an appropriate density. This prevents the FFC2 from hitting the outer peripheral wall 42 of the lower case 5 and generating abnormal noise.

[0066] Conversely, in a cable winding device with a long maximum payout length of FFC2, winding the FFC2 onto a shaft 3 with a small outer diameter allows the FFC2 to be housed inside the lower case 5 at an appropriate density. This prevents friction between the outer periphery wall 42 of the lower case 5 and adjacent FFC2s from hindering smooth winding or unwinding. [Explanation of symbols]

[0067] 1…Cable winding device 2… Flexible flat cable 3… Shaft 4…Cabinet 5…Lower case 6… Upper cover 7... Shaft mounting section 10…Cable winding body 34…Matching hole 35…Matching hole 54…Mating shaft 55…Mating shaft 71... Fitting part 72... Fitting part 3b...Lower end surface of the shaft 5b...Bottom of the lower case 6b... The underside of the upper cover S1…Cable winding body creation process S2…Cable winding assembly installation process

Claims

1. Flexible flat cable and A shaft for fixing the aforementioned flexible flat cable, A cable winding device comprising a shaft and a housing for housing the flexible flat cable wound around the shaft, A shaft mounting portion is provided that allows the shaft to be mounted at a predetermined location inside the housing. The housing consists of a lower case and an upper cover that fits into the lower case and closes the opening. The shaft mounting portion has a fitting portion that fits the end face of the shaft with at least the bottom surface of the lower case or the back surface of the upper cover facing 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 projection are inserted and fitted together. A pair of fitting recesses and fitting protrusions and another pair of fitting recesses and fitting protrusions are arranged parallel to each other. A pair of fitting recesses and fitting protrusions are provided on the central axis of the shaft body. Multiple positioning fitting recesses, which are other fitting recesses, are provided concentrically with respect to the central axis of the shaft body. Other positioning fitting protrusions, which are fitting protrusions, are provided on the concentric circles with respect to the central axis of the shaft body. Either of the positioning fitting recesses and positioning fitting protrusions are inserted and fitted together. Cable winding device.

2. A flange extending radially outward is provided at the corner between the circumferential surface and the end surface of the shaft body. The cable winding device according to claim 1.

3. The system comprises one selected cable winding body, which is created by winding the flexible flat cable around the shaft body of a different outer diameter. The cable winding device according to claim 1 or claim 2.

4. Flexible flat cable and A shaft for fixing the aforementioned flexible flat cable, A method for assembling a cable winding device comprising a shaft and a housing for housing the flexible flat cable wound around the shaft, A step of winding the flexible flat cable around the shaft to create a cable winding body, The process includes attaching the cable winding body to a predetermined location inside the housing, The housing consists of a lower case and an upper cover that fits into the lower case and closes the opening. The shaft mounting portion has a fitting portion that fits the end face of the shaft with at least the bottom surface of the lower case or the back surface of the upper cover facing 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 projection are inserted and fitted together. A pair of fitting recesses and fitting protrusions and another pair of fitting recesses and fitting protrusions are arranged parallel to each other. A pair of fitting recesses and fitting protrusions are provided on the central axis of the shaft body. Multiple positioning fitting recesses, which are other fitting recesses, are provided concentrically with respect to the central axis of the shaft body. Other positioning fitting protrusions, which are fitting protrusions, are provided on the concentric circles with respect to the central axis of the shaft body. Either of the positioning fitting recesses and positioning fitting protrusions are inserted and fitted together. Assembly method for a cable winding device.

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