Winder for a Band Shaped Element

Abstract

A winder is for a band-shaped element. A stator includes an end wall, which forms a first side support for the band-shaped element, and a band guide arranged perpendicularly to the end wall. A rotor comprises an end cover which forms a second side support for the band-shaped element. A reel boss is arranged perpendicularly on the end cover and provided with an engagement portion for receiving an end portion of the band-shaped element. A cranking handle projects from the end cover at a distance from the center axis of the reel boss. The stator includes at least one spacer element which supportingly abuts by an end face against a rim portion of the end cover of the rotor, and the stator and the rotor comprise complementary radial-guide means arranged to center the rotor on the stator.

Claims

1. A winder for a band-shaped element, the winder comprising: a stator comprising an end wall, which is arranged to form a first side support for the band-shaped element, and a band guide arranged substantially perpendicularly to the end wall peripherally on the end wall and arranged for the band-shaped element to be passed through; a rotor comprising an end cover which is arranged to form a second side support for the band-shaped element; a reel boss arranged perpendicularly on the end cover and provided with an engagement portion arranged to receive an end portion of the band-shaped element, and a cranking handle projecting from the end cover in the opposite direction to that of the reel boss and at a distance from the center axis of the reel boss; the stator comprising at least one spacer element which is arranged to supportingly abut by an end face against nearly an entire circumference of a rim portion of the end cover of the rotor; and the stator and the rotor comprising complementary radial-guide means arranged to center the rotor on the stator, wherein the rotor is arranged to be pulled out of the stator for release of the wound band-shaped element.

2. The winder according to claim 1, wherein the spacer element is formed as a cylindrical side wall projecting up from the end wall of the stator and being penetrated at leased by the band guide.

3. The winder according to claim 2, wherein the side wall is formed as several separate side-wall sections which, spaced apart, project up from the end wall of the stator.

4. The winder according to claim 1, wherein said radial-guide means are formed of a center cut-out in the reel boss of the rotor and a shaft which projects perpendicularly up from the end wall of the stator, the center cut-out being arranged to accommodate at least a portion of the shaft.

5. The winder according to claim 1, wherein said radial-guide means are formed of a circumferential face on the end cover of the rotor and an internal supporting face on a side wall.

6. The winder according to claim 1, wherein the end cover of the rotor is provided with a rim portion, wherein a stepping circumferential face is arranged to be encircled by the spacer element, and an annular, stepped rim face is arranged to rest against the end face of the spacer element.

7. The winder according to claim 1, wherein a handle is arranged externally on the stator.

8. The winder according to claim 1, wherein the band guide of the stator has an open-end portion.

9. The winder according to claim 4, wherein an end portion of the shaft of the stator is arranged to extend through the rotor and receive a locking means, the locking means resting supportingly, in an active position, against the rotor.

10. The winder according to claim 1, wherein the stator is arranged to receive one or more liner plates centered on a shaft which projects perpendicularly up from the end wall of the stator.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In what follows, examples of preferred embodiments are described, which are illustrated in the accompanying drawings, in which

[0032] FIG. 1 shows an exploded perspective drawing of a winder viewed towards a closed end portion of a stator provided with a cylindrical sidewall;

[0033] FIG. 2 shows an exploded perspective drawing of the winder viewed towards an open end portion of the stator;

[0034] FIG. 3 shows a perspective drawing of a rotor with an end portion of a strap attached to a reel boss;

[0035] FIGS. 3a and 3b show radial sections through a portion of the stator and the rotor in alternative embodiments of a radial guiding of the rotor in the stator;

[0036] FIG. 4 shows a top view of the rotor;

[0037] FIG. 5 shows a top view of the stator with a sectioned sidewall;

[0038] FIG. 6 shows an assembled winder in perspective, in which a spring pin through a projecting portion of the center shaft of the stator fixes the rotor to the stator;

[0039] FIG. 7 shows an exploded perspective drawing of a stator with two liner plates for adjusting the winder to smaller strap widths; and

[0040] FIG. 8 shows a perspective drawing of a winder with a quick-release coupling for the connection to a mount on a base.

DETAILED DESCRIPTION OF THE DRAWINGS

[0041] Reference is first made to FIGS. 1 and 2, in which the reference numeral 1 indicates a winder for a band-shaped element 2, for example a load-securing strap, the winder 1 comprising a stator 11 and a rotor 12.

[0042] The stator 11 is shown here with a cylindrical cross section having an end wall 114, extending from which there is a sidewall 111 which is interrupted by a slot-shaped band guide 112. The band guide 112 is provided with an open end portion 1122 and is defined against the side wall 111 by rounded guide edges 1121 (se FIG. 2 in particular) which also braces the side wall 111 in the end wall 114. The stator 11 has an open top. Coinciding axially with the center axis S of the stator 11, a shaft 113 projects up from the end wall 114 towards the open top of the stator 11 (see FIG. 2). Externally on the end wall 114, that is to say opposite the shaft 113, a handle 115 (see FIG. 1) is arranged. Alternatively, the handle 115 may be arranged externally on the sidewall 111.

[0043] The rotor 12 is formed of an end cover 121, shown as a circular one here. Perpendicularly on the end cover, and coinciding with the center axis S, a reel boss 122 is arranged, which is provided with an engagement portion 1221 arranged to receive and secure an end portion 21 of the band-shaped element 2 (see FIG. 3). The engagement portion 1221 is shown here as two parallel grooves arranged on either side of a center cut-out 1222 extending through the reel boss 122 and the end cover 121. The center cut-out 1222 is arranged to receive the shaft 113 of the stator 11. A cranking handle 123 projects from the end cover 121 near the circumference of the end cover 121 and in the opposite direction to that of the reel boss 122 (see FIG. 2).

[0044] In this embodiment, the shaft 113 and the complementary center cut-out 1222 form a radial guide for the rotor 12 relative to the stator 11, and the reel boss 122, the end cover 121 and the cranking handle 123 form a crank which can be rotated around the shaft 113 of the stator 11. See also FIG. 4.

[0045] The side wall 111 forms a spacer element for the rotor 12 relative to the end wall 114 of the stator 11, as an end face 111a (see FIG. 2) of the side wall 111 is arranged to rest against a rim portion 121a of the end cover 121 of the rotor 12. FIG. 3 and FIG. 3a show a stepped rim portion 121a, in which a stepping circumferential face 121 defines an annular rim face 121 (see FIG. 3a in particular). When the rotor 12 is connected to the stator 11, the annular rim face 121 is resting against the end face 111a of the end wall 114, the upper portion of the sidewall 111 forming a supporting face 111b encircling said circumferential face 121 and forming a radial guide for the rotor 12.

[0046] FIG. 3b shows an alternative form of a radial guide of the rotor 12 relative to the stator 11, said end face 111a being stepped in such a way that the end cover 121 of the rotor may be recessed into the stator 11.

[0047] The embodiments of the radial guide that are shown in FIGS. 3, 3a and 3b may replace the radial guide formed of the shaft 113 and the complementary center cut-out 1222 shown in FIGS. 1 and 2 and described above.

[0048] In FIG. 5, an alternative embodiment of the stator 11 is shown, in which, from the circumference of the end wall 114, several sidewall sections 111 project, separated by side openings 111. In the same way as described above concerning the side wall 111, the side-wall sections 111 form spacer elements for the rotor 12, as the end faces 111a of the sidewall sections 111, too, form abutments for the end cover 121 of the rotor 12.

[0049] Reference is now made to FIG. 6, in which an alternative embodiment of the winder 1 is shown. In this embodiment, the shaft 113 of the stator 11 is provided with an end portion 1132, which, in the assembled state of the winder 1, projects out from the center cut-out 1222 of the rotor 12. A locking means 15, shown here as a linchpin, has been passed through a radial bore 1133 in said end portion 1132 and is resting supportingly against the end cover 121 of the rotor 12. The locking means 15 is particularly practical when the winder 1 is being stored.

[0050] Reference is now made to FIG. 7, in which first and second liner plates 13, 14 of different thicknesses are shown about to be inserted into the stator 11, the effective axial length of the stator 11 thereby being reduced to adapt the winder 1 for a band-shaped element with a smaller width.

[0051] In FIG. 8, the stator 11 is provided with an attachment 116, shown here as a quick-release coupling, for the connection to a base 3, typically via a quick-release mount 31 which is permanently fixed to the base 3.

[0052] When a band-shaped element 2, for example a load-securing strap, is to be rolled up to occupy as little space as possible during storing, for example, the rotor 12 is pulled out of the stator 11. The end portion 21 of the band-shaped element 2 is inserted into the engagement portion 1221 of the reel boss 122 of the rotor 12. The band-shaped element 2 is extended in the radial direction out from the reel boss 122, and the rotor 12 and the band-shaped element 2 are inserted into the stator 11, as the band-shaped element 2 is inserted sideways into the slot-shaped band guide 112 of the stator 11 through the open end portion 1122 of the band guide 112. The rotor 12 is rotated around the shaft 113 of the stator 11, so that the band-shaped element 2 is wound around the reel boss 122. When the band-shaped element 2 has been wound up, the rotor 12 is pulled out of the stator 11 together with the coil.

[0053] It should be noted that all the above-mentioned embodiments illustrate the invention, but do not limit it, and persons skilled in the art may construct many alternative embodiments without departing from the scope of the attached claims. In the claims, reference numbers in parentheses are not to be regarded as restrictive.

[0054] The use of the verb to comprise and its different forms does not exclude the presence of elements or steps that are not mentioned in the claims. The indefinite article a or an before an element does not exclude the presence of several such elements.

[0055] The fact that some features are indicated in mutually different dependent claims does not indicate that a combination of these features cannot be used with advantage.