Winding device for sheet-like material

Abstract

To make it possible to suppress rattling between a barrel and a bearing member, and to quickly and reliably connect a spring member and a support member, as well as the spring member and a spring receiving member.SOLUTION: Among a plurality of convex portions provided on an outer periphery of a fitting portion of a bearing member that is inserted into both ends of a barrel, at least two of the convex portions have a width on a regulating portion side that is greater than a width of a groove formed on an inner periphery of the barrel, and also a gap is provided between the convex portion and the regulating portion, and a slit is formed from a position where the gap is provided to a midway position toward a distal end side. A support shaft of a spring receiving member and a second support member connected to an end of a spring member is provided with a slit through which a locking portion provided at the end of the spring member can be inserted. A locking hook and an operation piece for operating the locking hook are integrally provided in front of a terminal end of the slit in a state perpendicular to the slit. A head of the operation piece is arranged to slightly protrude from outer peripheries of the spring receiving member and the support shaft.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a winding device for winding sheet-like members such as tonneau covers and sunshades installed in automobiles.

Background Art

[0002] In the luggage compartment of an automobile, a flexible tonneau cover (sheet-like member) may be provided to cover the upper part of the luggage compartment so that luggage cannot be seen from outside the window or to prevent direct sunlight from hitting the luggage. Further, a flexible sunshade (sheet-like member) may be provided on the door of an automobile or the like for anti-glare or to ensure privacy inside the vehicle. One end of the tonneau cover or sunshade is fixed to the winding device, and it is configured to be pulled out from the winding device or wound around the winding device as needed.

[0003] As a sunshade device installed in an automobile, for example, there is one as shown in Patent Document 1. The sunshade device disclosed in Patent Document 1 includes a flexible shade, a hollow cylindrical shaft for winding the shade, a bush for a shaft fitted at one end of the shaft, a support member for supporting one end of the shaft in a rotatable state via the bush, a slider fitted in a slidable state along the axial direction inside the shaft, a spring member having one end connected to the slider and the other end connected to the support member, and a case for housing the shaft and having an outlet for pulling out the shade. A plurality of ridges continuously extending along the axial direction are formed on the inner peripheral surface of the shaft, and a plurality of ridges extending along the axial direction are formed on the outer peripheral surfaces of the bush and the slider. The bush and the slider have a non-circular cross-sectional shape corresponding to the cross-sectional shape of the shaft, and are fitted inside the shaft in a rotationally constrained state. Furthermore, one end of the spring member is connected to the slider by inserting it into a connecting hole formed in the slider, and the other end of the spring member is connected to the support member by inserting it into a connecting hole formed in the support member. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2010-95200 [Overview of the Initiative] [Problems that the invention aims to solve]

[0005] However, in the sunshade device disclosed in Patent Document 1, the bush is held at one end of the shaft by fitting multiple protrusions formed on the outer surface of the bush between multiple protrusions formed on the inner surface of the shaft. However, if the gap between the protrusions is narrowed, it becomes difficult to insert the bush onto the shaft, and if the gap is widened, the rattle in the rotational direction increases, and the bush becomes more likely to fall off the shaft. Furthermore, the spring member is connected to the support member and the slider by inserting the end of the spring member into a connecting hole formed in the support member and the slider. However, since the diameter of the spring member is usually about 1 mm, inserting its end into the connecting hole is time-consuming and troublesome. Moreover, because the end of the spring member is simply inserted into the connecting hole, there is a risk that it may come loose from the connecting hole depending on the circumstances. Furthermore, the aforementioned problem also exists in winding devices other than sunshade devices, such as tonneau cover devices.

[0006] In view of the various problems mentioned above, the present invention aims to provide a winding device for a sheet-like member that can suppress rattling and detachment between the barrel and the bearing member, and that can quickly and reliably connect the spring member and the support member, as well as the spring member and the spring receiving member. [Means for solving the problem]

[0007] To solve the above problems, the present invention provides a sheet-like member winding device comprising: a hollow cylindrical barrel on which a sheet-like member is attached to the outer circumference and which has a plurality of grooves formed on its inner circumference along the axial direction; a spring member housed inside the barrel; a tube member interposed between the barrel and the spring member; a spring receiving member housed inside the barrel with a plurality of protrusions formed on its outer circumference that engage with the grooves on the inner circumference of the barrel, and which locks one end of the spring member; a cylindrical fitting portion with a plurality of protrusions formed on its outer circumference that engage with the grooves on the inner circumference of the barrel; and a large diameter restricting portion provided on the base end side of the fitting portion, which is inserted into both axial ends of the barrel. The bearing comprises a first and second bearing member, a first support member having a support shaft inserted through the first bearing member and rotatably supporting one end of the barrel, and a second support member having a support shaft inserted through the second bearing member and rotatably supporting the other end of the barrel, with the other end of the spring member being locked to it, wherein at least two of the multiple protrusions formed on the outer circumference of the fitting portion of the bearing member have a width on the regulating portion side that is slightly wider than the width of the groove formed on the inner circumference of the barrel, and a gap is provided between them and the regulating portion, and a slit is formed from the position where the gap is provided to an intermediate position toward the tip side. Furthermore, the spring receiving member and the support shaft of the second support member are provided with a slit at the end that is inserted into the end of the spring member, through which a locking portion provided at the end of the spring member can be inserted. A locking hook and an operating piece for operating the locking hook are integrally provided just before the end of the slit, perpendicular to the slit, and the head of the operating piece protrudes slightly from the outer circumference of the spring receiving member and the support shaft. [Effects of the Invention]

[0008] In the sheet-like member winding device of the present invention, of the multiple protrusions formed on the outer circumference of the bearing member insertion portion that is fitted into both ends of the barrel, at least two of the protrusions have a width slightly wider on the restricting portion side than the width of the groove formed on the inner circumference of the barrel, and a gap is provided between them and the restricting portion. A slit is formed from the position where the gap is provided to an intermediate position toward the tip. As a result, the protrusions are fitted into the groove in a state where they are compressed inward using the slit, and are pressed against the groove by the force that tries to return to their original shape, thereby preventing rattling between the barrel and the bearing member, and preventing the bearing member from falling out of the barrel. Furthermore, the spring receiving member and the support shaft of the second support member are provided with a slit at the end that is inserted into the end of the spring member, through which the locking portion provided on the end of the spring member can be inserted. In addition, a locking hook and a lever body for operating the locking hook are integrally provided just before the end of the slit, perpendicular to the slit. As a result, when the ends of the spring receiving member and the support shaft are inserted into the end of the spring member, the locking portion is inserted into the slit and locked between its end and the locking hook, thereby allowing the spring member to be easily and irremovably attached to the spring receiving member and the support shaft. Furthermore, since the head of the operating piece, which is integrally provided with the locking hook, protrudes slightly from the outer circumference of the spring receiving member and the support shaft, when the spring receiving member is inserted into the barrel and the support shaft is inserted into the bearing member, the head of the operating piece is forcibly pushed inward, causing the locking hook to lock, thereby reliably preventing the locking part from coming out of the slit. [Brief explanation of the drawing]

[0009] [Figure 1] This is a perspective view showing a winding device for a sheet-like member according to the present invention. [Figure 2] Similarly, this is an exploded perspective view showing the winding mechanism. [Figure 3] This is an explanatory diagram showing the barrel that constitutes the winding device, where (a) is a side view and (b) is a cross-sectional perspective view along line AA of (a). [Figure 4]Similarly, this is an explanatory diagram showing the spring components that make up the winding device, with (a) being a front view and (b) being a side view. [Figure 5] Similarly, this is an explanatory diagram showing the spring support member that constitutes the winding device, where (a) is a plan view, (b) is a left side view, (c) is a right side view, (d) is a front view, (e) is a rear view, and (f) is a cross-sectional view along line BB in (d). [Figure 6] This is a perspective view showing the spring support member that makes up the winding device. [Figure 7] Similarly, this is an explanatory diagram showing the bearing members that make up the winding device, where (a) is a plan view, (b) is a left side view, (c) is a right side view, (d) is a front view, and (e) is a cross-sectional view along line CC in (a). [Figure 8] Similarly, this is a perspective view showing the bearing components that make up the winding device. [Figure 9] Similarly, this is an explanatory diagram showing the first support member that constitutes the winding device, where (a) is a perspective view, (b) is a bottom view, and (c) is a cross-sectional view along the DD line in (b). [Figure 10] Similarly, this is an explanatory diagram showing the support seat of the second support member that constitutes the winding device, where (a) is a perspective view, (b) is a bottom view, and (c) is a cross-sectional view along the EE line in (b). [Figure 11] Similarly, this is an explanatory diagram showing the support shaft of the second support member that constitutes the winding device, where (a) is a plan view, (b) is a left side view, (c) is a right side view, (d) is a front view, (e) is a rear view, and (f) is a cross-sectional view along the FF line of (d). [Figure 12] Similarly, this is a perspective view showing the support shaft of the second support member that constitutes the winding device. [Figure 13] This is an explanatory diagram showing the state in which the first bearing member is attached to the barrel. [Figure 14] This is an explanatory diagram showing the state in which one end of the spring member is attached to the support shaft of the second support member. [Figure 15] This is an explanatory diagram showing the state in which the support shaft of the second support member is inserted into the second bearing member. [Figure 16] This is an explanatory diagram showing how the other end of a spring member is attached to a spring receiving member. [Figure 17] It is an explanatory diagram showing a state where a spring receiving member is fitted into a barrel. [Figure 18] It is an explanatory diagram showing a state where a second bearing member through which a second support member is inserted is attached to a barrel. [Figure 19] It is a cross-sectional view showing a state where a winding device is assembled.

Embodiments for Carrying out the Invention

[0010] Hereinafter, embodiments for carrying out the present invention will be specifically described with reference to FIGS. 1 to 19. FIG. 1 is a perspective view showing a winding device for a sheet-like member according to the present invention, and FIG. 2 is an exploded perspective view showing the same winding device. In FIGS. 1 and 2, reference numeral 1 denotes a winding device for a sheet-like member according to the present invention (hereinafter simply referred to as a winding device). The winding device 1 includes a hollow cylindrical barrel 3 to which one end of a flexible sheet-like member 2 such as a tonneau cover or a sunshade is fixed, a spring member 4 housed in the barrel 3, a spring receiving member 5 also housed in the barrel 3 and having one end of the spring member 4 locked thereto, first and second bearing members 6A and 6B inserted into both end portions of the barrel 3, first and second support members 7 and 8 that rotatably support the barrel 3 via the bearing members 6A and 6B, a tube member 9 interposed between the spring member 4 and the barrel 3, and a ring-shaped collar 10 interposed between the bearing members 6 and the support members 7 and 8.

[0011] Hereinafter, the detailed structure of each member constituting the winding device 1 will be described with reference to FIGS. 1 to 12. First, the barrel 3 is formed in a hollow cylindrical shape from a metal such as aluminum, for example, and has a predetermined length dimension as shown in FIGS. 1 and 2. One end of a flexible sheet-like member 2 such as a tonneau cover or a sunshade is attached to the outer periphery of the barrel 3 as shown in FIG. 1, and a plurality of grooves 31 are formed along the axial direction (length direction) on the inner periphery as shown in FIG. 3.

[0012] The spring member 4 is, for example, a coil spring made by spirally winding a long, slender wire of steel, and has a predetermined length (shorter than the barrel 3) as shown in Figure 2, and has L-shaped locking portions 41 and 42 at both ends as shown in Figures 2 and 4.

[0013] The spring receiving member 5 is made of synthetic resin, for example, and as shown in Figures 5 and 6, it has a three-stage diameter consisting of a large-diameter portion 51 which is approximately the same diameter as the inner diameter of the barrel 3, a medium-diameter portion 52 which is smaller in diameter than the large-diameter portion 51, and a small-diameter portion 53 which is smaller in diameter than the medium-diameter portion 52. As shown in Figure 5(b), the outer circumference of the large-diameter portion 51 has multiple protrusions 54a to 54d (for example, four at 90° intervals) that fit into multiple grooves 31 formed on the inner circumference of the barrel 3, and two of these protrusions 54a and 54c extend to the outer circumference of the medium-diameter portion 52. The tip end of the protrusions 54a to 54d is tapered as shown in Figure 5, and the rear end (towards the medium-diameter portion 52) is formed with a width dimension that is approximately the same as or slightly narrower than the grooves 31 formed on the inner circumference of the barrel 3. The medium-diameter portion 52 and the small-diameter portion 53 are provided with a slit 55 having an opening on the tip side of the small-diameter portion 53, positioned to correspond to the protrusions 54a and 54c that extend to the outer circumference of the medium-diameter portion 52. Furthermore, the medium-diameter portion 52 has a locking hook 56 and an operating piece 57 integrally formed perpendicular to the slit 55, just before the end of the slit 55, and windows 58 and 59 are provided at the portions facing the locking hook 56 and operating piece 57, respectively. The slit 55 has a width dimension that allows the locking piece 41 of the spring member 4 to pass through, and a gap is provided between the locking hook 56 and the end of the slit 55 that allows the locking piece 41 to be locked. The operating piece 57 protrudes through the window 59, and its head protrudes slightly outward from the protrusion 54d formed on the outer circumference of the large-diameter portion 51.

[0014] The bearing members 6A and 6B are, for example, cylindrical bodies made of synthetic resin, and as shown in Figures 7 and 8, they are equipped with a fitting portion 61 having a diameter approximately the same as the inner diameter of the barrel 3, and a regulating portion 62 formed on the base end side of the fitting portion 61 having a diameter approximately the same as the outer diameter of the barrel 3. As shown in Figures 7 and 8, the outer circumference of the fitting portion 61 has a plurality of protrusions 63a to 63h that engage with a plurality of grooves 31 formed on the inner circumference of the barrel 3, extending from the base end (regulating portion 62 side) towards the tip end. Two of these protrusions, 63a and 63e, have a gap 64 between the base end and the regulating portion 62, and a slit 65 is formed from the position where the gap 64 is provided to an intermediate position toward the tip end. Furthermore, the tip end of the two protrusions 63a and 63e is tapered, and the base end (regulating portion 62 side) is formed with a width dimension that is slightly wider than the grooves 31 formed on the inner circumference of the barrel 3. On the other hand, the remaining protrusions 63b to 63d and 63f to 63h are tapered at the tip end, and the base end (regulating portion 62 side) is formed with a width dimension that is approximately the same as or slightly narrower than the grooves 31 formed on the inner circumference of the barrel 3.

[0015] The first support member 7 is made of synthetic resin, for example, and as shown in Figure 9, comprises an inverted T-shaped support seat 71 and a cylindrical support shaft 72 that is integrally projected horizontally from the vertical portion of the support seat 71 and inserted into the bearing member 6A. A projection 71a is provided on the back surface of the support seat 71 that fits into a hole (not shown) provided on the automobile side, and a nut 71b is embedded therein, into which a bolt or the like (not shown) for fixing the support seat 71 to the automobile is screwed. The support seat 71 may be formed in an L-shape, for example.

[0016] The second support member 8 is made of synthetic resin, for example, and as shown in Figures 2 and 10 to 12, it comprises an inverted T-shaped support seat 81 and a support shaft 82 that is fitted horizontally to the vertical portion of the support seat 81. As shown in Figure 10, a rectangular hole 81a is formed in the vertical portion of the support seat 81 into which the base end of the support shaft 82 (a connecting portion 82c, described later) fits. Furthermore, a projection 81b is provided on the back surface of the support seat 81 that fits into a hole (not shown) provided on the automobile side, and a nut 81c is embedded therein, into which a bolt or the like (not shown) for fixing the support seat 81 to the automobile is screwed. The support seat 81 may be formed in an L-shape, for example. As shown in Figures 11 and 12, the support shaft 82 comprises a cylindrical shaft portion 82a inserted into the bearing member 6B, a disc-shaped flange 82b formed coaxially and integrally on the base end side of the shaft portion 82a and having approximately the same diameter as the restricting portion 62 of the bearing member 6B, and a rectangular coupling portion 82c formed coaxially and integrally on the flange 82b and fitted into a rectangular hole portion 81a formed in the vertical portion of the support seat 81. The tip end of the shaft portion 82a is a small-diameter portion 82d inserted into the end of the spring member 4, and a slit 83 having an opening in the small-diameter portion 82d is formed on the tip end side of the shaft portion 82a, including the small-diameter portion 82d, extending toward the flange 82b to a predetermined position. Furthermore, a locking hook 84 and an operating piece 85 for operating it are integrally formed on the shaft portion 82a just before the end of the slit 83, perpendicular to the slit 83, and window portions 86 and 87 are provided in the portions facing the locking hook 84 and operating piece 85. The slit 83 has a width dimension that allows the locking portion 42 of the spring member 4 to be inserted, and a gap is formed between the locking hook 84 and the end of the slit 83 that allows the locking portion 42 of the spring member 4 to be engaged. The operating piece 85 protrudes through the window portion 87, and its head protrudes slightly outward from the outer circumference of the shaft portion 82a.

[0017] The tube member 9 is made of, for example, rubber or a soft resin material, and as shown in Figure 2, has the same length as or slightly shorter than the spring member 4, and has an outer diameter that is the same as or slightly smaller than the inner diameter of the barrel 3 and an inner diameter that is the same as or slightly larger than the outer diameter of the spring member, and is interposed between the barrel 3 and the spring member 4. The collar 10 is made of, for example, synthetic resin and is formed in a ring shape with an outer diameter approximately the same as the regulating portion 62 of the bearing members 6A and 6B and an inner diameter approximately the same as the outer diameter of the support shafts 72 and 82 of the support members 7 and 8.

[0018] Next, the assembly of the winding device 1 according to the present invention will be explained with reference to Figures 13 to 19. First, the bearing member 6A is attached to one end of the barrel 3. In this case, as shown in Figure 13(a), with the multiple grooves 31 formed on the inner circumference of the barrel 3 and the multiple protrusions 63a to 63h provided on the outer circumference of the fitting portion 61 of the bearing member 6A aligned, the tip of the fitting portion 61 is inserted from the end of the barrel 3 (see Figure 13(b)), and it is inserted until the restricting portion 62 contacts the end of the barrel 3 (see Figure 13(d)). At this time, since the tip side of the protrusions 63a to 63h is tapered, insertion into the grooves 31 can be performed smoothly. In addition, of the protrusions 63a to 63h, the protrusions 63b to 63d and 63f to 63h are formed with a width dimension that is approximately the same as or slightly narrower than the grooves 31 at the base end side (restricting portion 62 side), so when fitted into the grooves 31, the rotation of the bearing member 6A in the circumferential direction is restricted. On the other hand, since the protrusions 63a and 63e are formed with a width dimension that is slightly wider than the groove 31 formed on the inner circumference of the barrel 3 at their base end (regulating portion 62 side) (see Figure 13(c)), they will encounter slight resistance when fitted into the groove 31. However, a gap 64 is formed between the base end of the protrusions 63a and 63e and the regulating portion 62, and a slit 65 is formed from the position where the gap 64 is formed to an intermediate position toward the tip. Therefore, by pushing them into the groove 31 while resisting the resistance, the protrusions 63a and 63e are fitted into the groove 31 in a state where they are compressed inward, as shown in Figure 13(e). As a result, the protrusions 63a and 63e are pressed against the groove 31 by the force that tries to return them to their original state, so that looseness does not occur between the bearing member 6A and the barrel 3, and the bearing member 6A does not come out of the barrel 3.

[0019] Next, one end of the spring member 4 is attached to the support shaft 82 of the second support member 8. In this case, as shown in Figure 14(a), the locking portion 42 formed on one end of the spring member 4 is inserted through the slit 83 formed on the tip side of the support shaft 82, and the small diameter portion 82d provided on the tip side of the support shaft 82 is inserted into one end of the spring member 4. Then, as shown in Figure 14(b), when the locking portion 42 comes into contact with the locking hook 84 formed on the support shaft 82 perpendicular to the slit 83, the locking hook 84 is pressed toward the window portion 87, opening the slit 83. As a result, the locking portion 42 reaches the end of the slit 83, and as shown in Figure 14(c), the locking hook 84 returns to its original state and closes the slit 83, preventing the locking portion 42 from coming out of the slit 83. To remove the spring member 4 from the support shaft 82, the operating piece 85 is operated to open the slit 83, which is blocked by the locking hook 84 as shown in Figure 14(c), as shown in Figure 14(b), and the spring member 4 is then pulled out from the support shaft 82.

[0020] Next, the bearing member 6B is attached to the support shaft 82. When attaching the bearing member 6B to the support shaft 82, a ring-shaped collar 10 is pre-attached to the base end of the support shaft 82 in contact with the flange 82b, as shown in Figure 15(a). When attaching the bearing member 6B to the support shaft 82, as shown in Figure 15(a), the other end of the spring member 4 is inserted through the bearing member 6B from the regulating portion 62 side, and the support shaft 82 attached to one end of the spring member 4 is inserted until the collar 10 contacts the regulating portion 62 of the bearing member 6B, as shown in Figure 15(b). In this case, since the head of the operating piece 85 for operating the locking hook 84 protrudes from the outer circumference of the support shaft 82, when the support shaft 82 is inserted into the bearing member 6B, as shown in Figure 15(b), the operating piece 85 is forcibly pushed inward from the support shaft 82, and the locking hook 84 is also pressed toward the window portion 86, resulting in a locked state. As a result, the locking piece 42 formed at one end of the spring member 4 is reliably prevented from coming out of the slit 83.

[0021] Next, the spring receiving member 5 is attached to the other end of the spring member 4. Before attaching the spring receiving member 5, the tube member 9 is pre-attached to the other end of the spring member 4, as shown in Figure 15(b). Note that the tube member 9 is not shown in Figure 16. After attaching the tube member 9 to the outer circumference of the spring member 4 as described above, the locking portion 41 formed on the other end of the spring member 4 is inserted through the slit 55 formed in the spring receiving member 5, as shown in Figure 16(a), and the small diameter portion 53 of the spring receiving member 5 is inserted into the other end of the spring member 4. Then, as shown in Figure 16(b), when the locking portion 41 comes into contact with the locking hook 56 formed on the spring receiving member 5 perpendicular to the slit 55, the locking hook 56 is pressed toward the window portion 59, opening the slit 55. As a result, the locking portion 41 reaches the end of the slit 55, and as shown in Figure 16(c), the locking hook 56 returns to its original position and closes the slit 55, preventing the locking portion 41 from coming out of the slit 55. To remove the spring member 4 from the spring receiving member 5, the operating piece 57 is operated to open the slit 55, which is closed by the locking hook 56 as shown in Figure 16(c), as shown in Figure 16(b), and the spring member 4 is then pulled out of the spring receiving member 5.

[0022] Next, the bearing member 6B is attached to the other end of the barrel 3. A support shaft 82 to which one end of the spring member 4 is attached is inserted through the bearing member 6B, and a spring receiving member 5 is attached to the other end of the spring member 4. Therefore, when attaching the bearing member 6B to the other end of the barrel 3, first, as shown in Figures 17(a) and (b), the spring receiving member 5 is inserted into the barrel 3 from the other end with the multiple (4) protrusions 54a to 54d on its outer circumference aligned with a predetermined groove 31 on the inner circumference of the barrel 3. In this case, since the tip of the protrusions 54a to 54d is tapered, insertion into the groove 31 can be performed smoothly. Furthermore, since the rear end (middle diameter portion 52 side) of the protrusions 54a to 54d is formed to be approximately the same width as or slightly narrower than the groove 31, when inserted into the groove 31, the rotation of the spring receiving member 5 in the circumferential direction is restricted. In addition, since the head of the operating piece 57 for operating the locking hook 56 protrudes from the outer circumference of the spring receiving member 5, when the spring receiving member 5 is inserted into the barrel 3, as shown in Figure 17(c), the operating piece 57 is forcibly pushed inward of the spring receiving member 5, and the locking hook 56 is also pressed toward the window portion 58, resulting in a locked state. As a result, the locking piece 41 formed on the other end of the spring member 4 is reliably prevented from coming out of the slit 55.

[0023] Next, as shown in Figures 18(a) and (b), the spring member 4 and the tube member 9 attached to its outer circumference are inserted into the barrel 3 following the spring receiving member 5. The bearing member 6B, through which the support shaft 82 attached to one end of the spring member 4 is inserted, is then inserted into the barrel 3 from the other end, with the multiple protrusions 63a to 63h on its outer circumference aligned with the multiple grooves 31 on the inner circumference of the barrel 3, and the restricting portion 62 is brought into contact with the other end of the barrel 3 as shown in Figure 18(c). The bearing member 6B has the same structure as the bearing member 6A, and by inserting it into the barrel 3 from the other end as described above, rotation in the circumferential direction is restricted. Furthermore, as shown in Figure 18(d), two of the multiple protrusions 63a to 63h, protrusions 63a and 63e, are compressed inward using a slit 65 formed from the position where the gap 64 is provided to an intermediate position toward the tip, and fit into a groove 31 formed on the inner circumference of the barrel 3. As a result of the force trying to return to its original state, the bearing member 6B is pressed against the groove 31, which prevents looseness from occurring between the bearing member 6B and the barrel 3, and prevents the bearing member 6B from coming out of the barrel 3.

[0024] As described above, the bearing member 6A is attached to one end of the barrel 3, and the spring receiving member 5, spring member 4, and tube member 9 are inserted into the barrel 3 from the other end, and the bearing member 6B and support shaft 82 are attached to the other end. Then, as shown in Figure 19, the collar 10 is attached to the support shaft 72 of the first support member 7, and with the collar 10 in contact with the restricting portion 62 of the bearing member 6A, the support shaft 72 is rotatably inserted into the bearing member 6A, and the coupling portion 82c provided on the support shaft 82 inserted into the bearing member 6B is fitted into the hole 81a provided in the support seat 81 of the second support member 8, thereby completing the assembly of the winding device 1.

[0025] In the winding device 1 configured as described above, multiple protrusions 63a to 63h are formed on the outer circumference of the bearing members 6A and 6B attached to both ends of the barrel 3, and these protrusions fit into multiple grooves 31 formed on the inner circumference of the barrel 3. Two of these protrusions, 63a and 63e, have a width slightly wider on the side of the restricting portion 62 than the width of the groove 31, and a gap 64 is provided between them and the restricting portion 62. A slit 65 is formed from the position where the gap 64 is provided to an intermediate position toward the tip. As a result, the protrusions 63a and 63e are fitted into the groove 31 in a state where they are compressed inward, and the force trying to return them to their original state causes them to press against the groove 31. This effectively prevents the bearing members 6A and 6B from rattling relative to the barrel 3 or from coming off the barrel 3. Furthermore, since the protrusions 63b to 63d, 63f to 63h other than the protrusions 63a and 63e have a width on the regulating portion 62 side that is the same as or slightly narrower than the width of the groove 31, they can be fitted into the groove 31 without any particular resistance, and the bearing members 6A and 6B can be prevented from rotating in the circumferential direction relative to the barrel 3.

[0026] Furthermore, the spring member 4 is provided with slits 55 and 83 through which the locking portions 41 and 42 formed at the end of the spring member 4 are inserted. These slits are also integrally formed just before the end of the slits 55 and 83, perpendicular to the slits 55 and 83, and operating pieces 57 and 85 for operating the locking portions 56 and 84 are formed. Therefore, by inserting the spring member 5 and the support shaft 82 into the end of the spring member 4 and simultaneously inserting the locking portions 41 and 42 through the slits 55 and 83 to lock them between their ends and the locking portions 56 and 84, the spring member 4 can be easily and securely attached to the spring member 5 and the support shaft 82. Furthermore, since the heads of the operating pieces 57 and 85 protrude slightly from the outer circumference of the spring receiving member 5 and the support shaft 82, when the spring receiving member 5 is inserted into the inner circumference of the barrel 3 and the support shaft 82 is inserted into the inner circumference of the bearing member 6B, the operating pieces 57 and 85 are forcibly pushed inward towards the spring receiving member 5 and the support shaft 82, causing the locking hooks 56 and 84 to lock, thereby reliably preventing the locking pieces 41 and 42 from coming out of the slits 55 and 83. [Explanation of symbols]

[0027] 1 Winding device 2 Sheet-like member 3 barrels 31 Groove 4 Spring member 41,42 Locking part 5. Spring support member 51 Large diameter section 52 Medium diameter part 53 Small diameter section 54a~54d Convex part 55 slits 56 Locking Hooks 57 Operation piece 58, 59 Window section 6A, 6B Bearing Members 61 Inset part 62 Regulatory Department 63a~63h Convex part 64 Gap 65 slits 7. Support Member 71 Support seat 72 Support shaft 8. Support Member 81 Support seat 82 Support shaft 82a Shaft 82b Flange 82c joint 82d Small diameter section 83 Slits 84 Locking Hooks 85 Operation piece 86,87 Window section 9 Tube members 10 colors

Claims

1. A winding device for winding up sheet-like materials such as tonneau covers and sunshades installed on automobiles, A hollow cylindrical barrel having the sheet-like member attached to its outer circumference and having multiple grooves formed along its inner circumference in the axial direction, A spring member housed within the barrel, A tube member is interposed between the barrel and the spring member, A spring receiving member is housed inside the barrel with a plurality of protrusions formed on its outer circumference that engage with grooves on the inner circumference of the barrel, and which locks one end of the spring member in place. The first and second bearing members are fitted to both axial ends of the barrel, and each has a cylindrical fitting portion with a plurality of protrusions formed on its outer circumference that engage with a groove on the inner circumference of the barrel, and a large diameter restricting portion provided on the base end side of the fitting portion. A first support member having a support shaft inserted through the first bearing member and rotatably supporting one end of the barrel, The system comprises a second support member having a support shaft that is inserted through the second bearing member and rotatably supports the other end of the barrel, and into which the other end of the spring member is locked, Of the multiple protrusions formed on the outer circumference of the fitting portion of the bearing member, at least two of the protrusions have a width slightly wider on the regulating portion side than the width of the groove formed on the inner circumference of the barrel, and a gap is provided between them and the regulating portion, and a slit is formed from the position where the gap is provided to an intermediate position toward the tip side. A winding device for sheet-like members, characterized by the above.

2. The winding device for a sheet-like member according to claim 1, characterized in that the spring receiving member and the support shaft of the second support member are provided with a slit at the end that is inserted into the end of the spring member through which a locking portion provided at the end of the spring member can be inserted, and a locking hook and an operating piece for operating the locking hook are integrally provided just before the end of the slit, perpendicular to the slit, and the head of the operating piece protrudes slightly from the outer circumference of the spring receiving member and the support shaft.

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