JP2008082158A - Roller blind device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roller blind device which decrease a sound generated in the roller blind device and reaching outside during operation. <P>SOLUTION: The roller blind includes a winding shaft 10 of a hollow-tube shape which is stretched in a main stretching direction 2 for housing a retractable flexible planner constitution body, a winding spring 12 formed as a coil spring which is inserted in the winding shaft 10 and stretched in the main stretching direction 2, and an attenuation profile 20 which is arranged in an annular space 16 between the winding shaft 10 and the winding spring 12 and stretched in the main stretching direction 2. The attenuation profile 20 is configured so as to make the inside of the winding shaft 10 contact with an external contact section 24 and to contact the outside of the winding spring 12 with an internal contact section 22. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a hollow tubular winding shaft extending in a main extending direction for accommodating a retractable flexible planar structure, and a coil inserted into the winding shaft and extending in the main extending direction. A winding spring formed as a spring and a damping profile extending in the main direction of extension arranged in an annular space between the winding shaft and the coil spring, especially for use in a vehicle Related roller blind device. The present invention relates to a roller blind device in which a spring rod, in particular extending in the main stretching direction, is inserted into a winding spring.

  This type of roller blind device is known from US Pat. In this known roller blind device, on the other hand, a tube is provided between the torsion spring and the roller placed outside or the shaft placed inside, which abuts against the inside or outside of the torsion spring, respectively. The purpose of this tube is to reduce the harmful noise generated when the torsion spring is twisted.

Although roller blind devices reduce sound, it is considered a drawback of roller blind devices to not prevent the torsion spring from striking against the inner wall or shaft of the roller blind.
German Patent No. 2941711-C2

  An object of the present invention is to provide a roller blind device in which sound generated inside the roller blind device during operation and reaching the outside is reduced.

  According to the present invention, a roller blind device according to a classification section in which a damping profile is formed so as to abut on the inside of the winding shaft by the external contact section and on the outside of the winding spring by the internal contact section is proposed. Concerning noise generation due to the cooperation of the winding spring and the spring rod, according to the classification section in which the damping profile is formed so as to contact the inside of the winding spring by the external contact section and the outside of the spring rod by the internal contact section. A roller blind device is proposed.

  Roller blind devices according to the classification are used to store flexible planar structures that are not in use and to retract flexible planar structures, in particular to transition from a used state to a non-used state. . The planar structure is preferably wound in multiple layers on the winding shaft in the retracted state. The winding spring is twisted during manual withdrawal of the planar structure, so that the winding spring applies a rewinding force to the pulled portion of the planar structure. Changes in the torsional state of the winding spring, in particular the manual withdrawal of the planar structure and the automatic withdrawal of the planar structure, as well as the vibration of the roller blind device, cause a radius relative to the winding spring that twists the winding spring from its starting position. May generate force acting in the direction. Furthermore, the take-up spring may swing out due to vibrations taken from the outside. The take-up of the take-up spring generates harmful noises that are generated especially when hitting the outside of the take-up spring inside the take-up shaft and when hitting the inside of the take-up spring outside the spring rod. Depending on the respective application purpose abutting the inside and outside without play or extensively without play as contemplated by the present invention, and / or in the annular space between the take-up spring and the take-up shaft The damping profile provided in the annular space between the spring rod and the spring rod prevents the winding spring from striking against the inside of the winding shaft or the outside of the spring rod. This damping profile first prevents direct contact between the winding spring on the one hand and the winding shaft or spring rod on the other hand. On the other hand, this damping profile prevents free undamped take-up of the take-up spring and the associated striking inside of the take-up shaft or outside of the spring rod.

  The damping profile is manufactured from an elastic material such as a synthetic resin or rubber that allows a small swing of the take-up spring from its starting position, since such a take-off preferably occurs when the take-up spring is twisted. In addition to material selection, the cross-sectional shape of the damping profile is also preferably configured to remain in a state where limited swing-out of the winding spring is possible.

  The damping profile extends parallel to the winding shaft and the winding spring in the main stretching direction. An embodiment in which the damping profile extends over the entire length of the winding spring is advantageous. However, depending on the purpose, the embodiment may be such that the damping profile is provided only in the partial section of the take-up spring, and the partial section is prevented from hitting the take-up spring with the take-up shaft or the spring rod even in the intermediate section. Preferably, they are separated from each other only within a certain range.

  In a further development of the invention, in the case of a damping profile arranged between the winding spring and the winding shaft, the damping profile abuts the outside of the winding spring in at least one contact area, and at least one A cross section of the damping profile is formed to be spaced from the outside of the winding spring in the spaced region. In the case of a damping profile arranged between the winding spring and the spring rod, the damping profile abuts the inside of the winding spring in at least one contact area and from the inside of the winding spring in at least one spaced area. In order to be spaced apart, the cross section is formed according to the evolutionary formation.

  Such a damping profile accordingly abuts the winding spring only in the contact section, but not in the full range. Thereby, the winding spring can be swung out in a slightly spaced region during the course of twisting or during the course of vibration. This is particularly advantageous with regard to torsion because the swing is normal within a limited range when the winding spring is twisted. When this twist is completely prevented, this increases the pulling force that is manually procured. In particular, the contact section of such a damping profile is suitable for determining its dimensions on the circumference in the contact area and / or for securing the winding spring in a relaxed state in the unswinged rest position with respect to the device. A damping profile that abuts a simple winding spring is advantageous.

  In a further development of the invention, the damping profile is formed such that the damping profile abuts the take-up spring in three contact areas, each with one spacing area between the contact areas.

  Here, the contact area is preferably evenly distributed around the entire circumference of the winding spring. By the embodiment having three contact areas, good position fixing of the winding spring can be achieved without being swung out in the radial direction.

  In a further development of the invention, the damping profile is formed as a damping hollow profile.

  Such a damped hollow profile is surrounded and closed, so that direct contact between the winding spring on the one hand and the spring rod or winding shaft on the other hand is reliably prevented. Further, the formation as a damped hollow profile can be performed in an easy manner by inserting the winding spring into the damping profile and subsequently inserting the damping profile with the inserted winding spring into the winding shaft. It is advantageous. Correspondingly, it is easy to assemble a damping profile arranged between the winding spring and the spring rod.

  In a further development of the invention, the damping profile has a plurality of profile portions extending in the main stretching direction that are not connected to each other at least along the entire length of the damping profile in the circumferential direction.

  The damping profile with such a separated profile part preferably has a profile part distributed around the winding spring or spring rod at regular intervals in the circumferential direction. In this case, the inner and outer contact sections are arranged such that each profile portion has at least one inner contact section and at least one outer contact section. As an alternative to this, an embodiment in which a profile portion having an internal contact section and another profile portion having an external contact section is also conceivable, which is suitable for purposes according to the respective peripheral conditions. A profile portion having a circular cross section is particularly advantageous.

  The profile parts are connected to each other in the region of the connecting section, which is preferably provided in front of the damping profile. In order to improve the positional stability of the profile portion, it may be preferable to provide a plurality of connecting sections that are preferably regularly spaced from each other in the main stretching direction. The advantages of using a damping profile with profile portions that are not connected over their entire length in the circumferential direction are in particular material savings and weight reduction.

  In a further development of the invention, the cross section of the damping profile is formed such that the radial movement of the internal or external contact section results in a radial movement acting in the same direction of the opposing external or internal contact section. ing.

  In this context, movement in the same direction is movement that also acts radially outward or similarly radially inward. In the assembled state of the damping profile, the configuration of such a damping profile is that the contact section that abuts the winding shaft or the spring rod is pressed against the winding shaft or the spring rod in response to the swinging of the winding spring. This preferably results in a deformation of the damping profile in the region of the external contact section. A configuration is particularly advantageous in which the take-up of the take-up spring produces an increased pressing force in various contact sections that abut the take-up shaft side or the spring rod side over the entire range.

  In a further development of the invention, the cross section of the damping profile is formed so that a radial movement of the internal or external contact section results in a movement of at least one other internal or external contact section.

  In the case of such a mode, the swing-out of the winding spring and the swing-out of the contact section that comes into contact with the wind-up spring appearing along with it move another contact section that contacts the winding spring. The movement then takes place in the circumferential direction and / or in the radial direction. The winding spring thereby remains in contact with the abutting contact sections of the damping profile even in the swing-out state, and the return of the winding spring to its starting position causes a mutual collision of the damping profile and the winding spring. Absent. As a result, the generation of noise is reduced.

  In a further development of the invention, the damping profile is formed as a damping hose with a polygonal cross section, the cross section having a concave recess with an internal contact section and a convex convex with an external contact section. Have a place.

  A damping hose with a polygonal cross-section here is that the cross-section of the damping hose is not circular, but the cross-section is a partial area where the inner wall is in contact with the winding spring, and the inner wall is in contact with the winding shaft or spring rod. A damping hose having a substantially uniform inner wall strength with a shape imparting portion having a separate partial region. The contact section is formed in a concave shape or a convex shape. In this case, embodiments having three or more convex external contact sections and concave internal contact sections each are particularly advantageous. In the case of such a damping profile, the radial movement of the contact section can move the adjacent contact section and remains in contact with the entire contact section and the winding spring.

  In a further development of the invention, the damping profile is formed as a damping hose having a circular cross-section and a radially inward and / or radially outwardly facing contact pin exiting the damping hose, respectively at the distal end of the contact pin. An internal or external contact section is preferably provided.

  The use of contact sections that are elastically deformable here is particularly advantageous. This is advantageous both for the winding of the winding spring and for the use of the same type of damping profile for the various winding rollers, winding springs and / or spring rods.

  In a further development of the invention, the damping profile has a smaller inner diameter and / or a larger outer diameter in the non-built-in state than the annular space in which the damping profile is arranged in the built-in state.

  Such a damping profile is elastically deformed in the built-in state, and as a result, the contact section that is separated from the swing-out when the winding spring is swung out in the radial direction is followed in the direction of its relaxed state, thus Stays in contact with the winding spring.

  Other features of the present invention will become apparent from the illustrated and described embodiments of the present invention.

  The illustrated embodiments of the roller blind device according to the invention each show only the winding shaft with the winding spring, the damping element and partly with the spring rod. Conventional components of a roller blind device, such as a flexible planar structure or surrounding housing, are not shown for clarity.

  FIG. 1 a shows the basic structure in the example of the first embodiment of the winding shaft of the roller blind device according to the invention: a winding spring 12 is arranged inside the winding shaft 10, The shaft 10 and the winding spring 12 have a common main extending direction 2. In the annular hollow space 16 between the winding shaft 10 and the winding spring 12 placed inside, there is no play in the winding spring by the internal contact section 22 and in the winding shaft 12 by the external contact section 24, respectively. An attenuating damping profile 20 is inserted.

  FIG. 1b shows the winding shaft 10 shown in FIG. 1a, with a winding spring 12 inserted and a damping profile 20, in a side sectional view. The damping profile 20 abuts against the inner wall 10a of the winding shaft 10 as described above, along with its external contact section 24. The outer damping profile 20 abuts on the outer side 12 b of the winding spring 12 in the inner contact section 22. The three inner contact sections 22 and the three outer contact sections 24 are arranged alternately on the circumference of the damping profile 20 in this case. The cross section of the damping profile 20 has a polygonal, for example, trigeminal shape, with the outer contact section 24 disposed in the chamfered tip region and the inner contact section 22 disposed between the tips. The external attenuation profile 20 is formed in a convex shape in the region of the external contact section 24 and concave in the region of the internal contact section 22.

  The illustrated configuration ensures a particularly quiet operation. The damping profile is very light and can be produced advantageously with its thin-walled and simple construction. The winding spring 12 is held in the position shown in FIGS. 1 a and 1 b by the damping profile 20, but the fact that the damping profile 20 is nevertheless composed of an elastic material and the configuration of the damping profile 20. Based on the above, it is possible to swing out within the range necessary for the torsion as prescribed. Direct contact between the winding shaft 10 and the winding spring 12 is excluded by the damping profile 20 as well as a high radial acceleration of the winding spring, for example due to vibration.

  FIG. 1 c shows the behavior of the damping profile 20 for the case of radial winding of the winding spring 12. The winding spring is swung out to the left by a small distance in the state shown in the figure, and the starting position 12 'is represented by a dotted line. In the swing-out, the abutting internal contact section 22a is similarly swinged outward in the radial direction. In response, the coupling section 26a of the damping profile 20 that couples to the outer contact sections 24b and 24c adjacent to the inner contact section 22a is pivoted about the adjacent outer contact sections 24b and 24c. As a result, the external contact sections 24 b and 24 c are easily rotated in the direction of the arrow 4. This again results in a corresponding rotation of the connecting sections 26b and 26c opposite the connecting section 26a thereby causing a radially inward follow of the inner contact sections 22b and 22c. As a result, even when the take-up spring 12 is in the swing-out state, it is achieved that all three contact sections 22 a, 22 b and 22 c abut on the outer side 12 b of the take-up spring 12. Continuous tracking that ensures constant contact of the inner sections 22a, 22b and 22c of the damping profile 20 with the winding spring 12 with at least slight vibrations prevents unwanted noise such as rattling or rattling.

  In the embodiment of FIGS. 1 a-1 c, the outer diameter of the damping profile 20 defined by the outer contact sections 24 a, 24 b and 24 c is a dimension of the damping profile 20 that is larger than the inner diameter of the winding shaft 10 in the unassembled state. It is particularly advantageous to determine. The elastic relaxed state which can be achieved in the integrated state thereby additionally supports the following.

  In a variant not shown of the first embodiment, the cross section of the damping profile is formed in the form of an enclosed rectangular function in which the circumferential sections alternately abut against the take-up spring inside and abut against the take-up shaft outside. The circumferential sections are connected to each other by connecting sections in the radial direction.

  2a to 2c show a winding shaft of a second embodiment of the roller blind device according to the present invention. A winding spring 112 is disposed inside the winding shaft 110. The winding spring 112 formed as this coil spring is limited in its radial mobility by a spring rod 114 inserted into the winding spring 112. A damping profile 140 is disposed in the annular space 118 between the winding spring 112 and the spring rod 114. The winding shaft 110, the winding spring 112, the spring rod 114 and the damping profile 140 extend in the main extending direction 102 in parallel with each other.

  The damping profile 140 is formed as a damping hose with a circular cross section and is distributed over the entire circumference to provide a total of three thickened portions 146. The thickened portion 146 extends radially inward and outward from the damping hose, and the thickened portion forms an inner contact section 142 and an outer contact section 144. The damping profile 140 abuts against the spring rod 114 due to the internal contact section 142 and the damping profile 140 abuts against the take-up spring 112 due to the external contact section.

  FIG. 2 c shows how the damping profile 140 behaves when the winding spring 112 is swung from its starting position 112 ′. The damping profile 140 then prevents direct contact between the spring rod 114 and the winding spring 112. Here, the thickened portion 146a is elastically compressed by swinging. The damping profile 140 thereby makes it possible to swing the take-up spring, which in this case pushes the take-up spring back to its starting position. The winding spring 112 and the spring rod 114 are always in indirect contact with each other via at least one of the thickened portions 146.

  3-7 show a cross section of another damping profile disposed between the winding shafts 210, 310, 410, 510 and 610 and the winding springs 212, 312, 412, 512 and 612. However, in the same or correspondingly adapted form, the damping profile can also be used between the spring rod and the winding spring. Unless otherwise indicated, the attenuation profiles each have a cross section as illustrated over their entire length.

  FIG. 3 shows a particularly simple configuration of the damping profile 220 of the roller blind device according to the invention. The damping profile 220 has a substantially elliptical cross section and has two external contact sections 224 that abut against the take-up shaft 210 and two internal contact sections 222 that abut against the take-up spring 212. Such a damping profile 220 is particularly advantageous due to its low weight, simple structure and the associated low cost.

  FIGS. 4 a and 4 b show a damping profile 320 comprised of an external hose 330 and an internal hose 332 that are connected to each other via a connecting pin 334. The outer surface of the outer hose 330 then forms the outer contact section 324 of the damping profile, and the inner side of the inner hose 332 then forms the inner contact section 322. By simply connecting the inner hose 332 and the outer hose 330 to each other via a narrow pin 334, the radial swing out of the starting position 312 ′ of the winding spring 312 is shown in FIG. This is possible during simultaneous elastic extension or elastic compression.

  The attenuation profile 420 shown in FIGS. 5a and 5b is similar to the attenuation profile 140 of the embodiment of FIGS. Similarly, a circular hose section 430 having a thickened portion 432 is provided at three points spaced from each other at 120 °. The thickened portion 432 extends inward and outward from the circular cross section of the hose 430. The section of the thickened portion 432 facing inward forms an internal contact section 422. The section of the thickened portion 432 facing outward forms an external contact section 424. Unlike the embodiment of FIGS. 2a to 2c, a hollow tube is provided in the thickened portion 432, which is advantageous for elastic deformation. As shown in FIG. 5 b, the swinging spring 412 is swung out from the starting position in this embodiment, in which two thickened portions 432 a and 432 b are compressed in the radial direction, and this is the third through the inner wall 430 of the hose 430. The compression of the thickened portion 432c is caused in the circumferential direction, and consequently the radial expansion of the thickened portion 432c. Thus, the embodiment of FIGS. 5 a and 5 b also ensures that at least a smaller winding spring 412 swing is possible without contact loss in the inner contact section 422 outside the winding spring 412.

  FIGS. 6 a and 6 b show an embodiment having a damping profile 520 comprised of a hose section 530 that abuts the inner wall of the winding shaft 510 and a contact pin 532 that extends inwardly from the hose section 530. The hose section 530 then forms an external contact section 524. Each contact pin 532 has internal and external legs 532a and 532b bent together. Each of the inner legs 532b enters an inner contact section 522 formed as a contact pin 532c formed in a concave shape so as to abut against the take-up spring 512. The contact pin 532 is preferably dimensioned so that it is elastically pre-biased by a take-up spring 512 with the contact pin inserted. As soon as the winding spring 512 swings out from the starting position 512 ′, this increases the elastic stress of the contact pin 532a arranged in the direction in which the swing out occurs, while the opposing contact pin 532b elastically relaxes. Although it occurs, it remains in contact with the winding spring 512 at that time.

  FIG. 7 shows a damping profile 620 that uses four profile portions 630 distributed around the entire circumference that are not circumferentially connected to each other at the cut plane of FIG. The profile portions 630 each have a circular cross section, the opposing sides of the profile portion 630 form an internal contact section 622 that abuts the take-up spring 612, and the spaced apart sides of the profile portion 630 abut the take-up shaft 610. An external contact section 624 that contacts is formed. The profile portions 630 are connected to each other via connecting pins 632 up and down outside the cut surface shown, and such connecting pins 632 are provided at least on the front surface of the damping profile. It is preferred to distribute further connecting sections 632 over the entire length of the damping profile. In addition to the material savings associated with this type of configuration of the damping profile, such a damping profile is particularly advantageous for the behavior of the winding spring 612 during swinging. The profile portion 630 is moved circumferentially in a limited range so that the profile portion can elastically swing out of its starting position shown in FIG. 7 during simultaneous compression. Accordingly, the limited mobility of the suitably limited winding spring 612 is provided.

1 is a first embodiment of a roller blind device according to the present invention having a damping profile according to a perspective sectional view. 1 is a first embodiment of a roller blind device according to the present invention with a winding spring that does not swing out and a damping profile according to a side sectional view. 1 is a first embodiment of a roller blind device according to the present invention with an oscillating winding spring and a damping profile, according to a side sectional view. Fig. 3 is a second embodiment of a roller blind device according to the present invention having a damping profile according to a perspective cross-sectional view. FIG. 4 is a second embodiment of a roller blind device according to the present invention with a winding spring that does not swing out and a damping profile according to a side sectional view. FIG. 4 is a second embodiment of a roller blind device according to the present invention with a swinging winding spring and damping profile according to a side cross-sectional view. It is 3rd Embodiment of the roller blind apparatus based on this invention by side sectional drawing. It is 4th Embodiment of the roller blind apparatus which concerns on this invention which has the winding spring which does not swing out by side sectional drawing. It is 4th Embodiment of the roller blind apparatus which concerns on this invention which has the coiled winding spring by the side sectional drawing. It is 5th Embodiment of the roller blind apparatus which concerns on this invention which has the winding spring which does not swing out by side sectional drawing. It is 5th Embodiment of the roller blind apparatus which concerns on this invention which has the coiled spring taken out by side sectional drawing. It is 6th Embodiment of the roller blind apparatus which concerns on this invention which has the winding spring which does not swing out by side sectional drawing. It is 6th Embodiment of the roller blind apparatus which concerns on this invention which has the coiled spring taken out by the side sectional drawing. It is 7th Embodiment of the roller blind apparatus which concerns on this invention by side sectional drawing.

Explanation of symbols

2 Main extending direction 10 Winding shaft 12 Winding spring 16 Annular hollow space 20 Damping profile 22 Internal contact section 24 External contact section

Claims (13)

A hollow tubular winding shaft (10; 110; 210; 310; 410; 510; 610) extending in the main stretching direction (2; 102) for accommodation of a retractable flexible planar structure;
A winding spring (12; 112; 212; 312; 412; 512; 612) formed as a coil spring that is inserted into the winding shaft and extends in the main extending direction;
A damping profile (20; 220; 320; 420; 520; 620) extending in a main stretching direction disposed in an annular space (16) between the winding shaft and the winding spring; Especially a roller blind device for use in a vehicle,
The damping profile can be applied to the inside of the winding shaft by external contact sections (24; 224; 324; 424; 524; 624) and by the internal contact sections (22; 222; 322; 422; 522; 622). It is configured to contact the outside of the take-up spring,
Roller blind device. The attenuation profile is
The damping so as to abut against the outside of the winding spring (12; 212; 412; 512; 612) in at least one contact area and to separate from the outside of the winding spring in at least one spacing area 2. The roller blind device according to claim 1, characterized in that a cross section of the profile (20; 220; 420; 520; 620) is formed. A hollow tubular winding shaft (110) extending in a main extending direction (102) for accommodation of a retractable flexible planar structure;
A winding spring (112) formed as a coil spring inserted into the winding shaft and extending in the main extending direction;
A spring rod (114) inserted into the winding spring (112) and extending in the main extending direction;
Roller blind, particularly for use in a vehicle, having a damping profile (140) extending in the main extending direction disposed in an annular space (118) between the winding shaft and the winding spring A device,
The damping profile (140) is formed to abut on the inside of the winding spring by an external contact section (144) and on the outside of the spring rod (114) by an internal contact section (142). Characterized by the
Roller blind device. The attenuation profile is
The damping profile (140) is adapted to abut against the inside of the winding spring (112) in at least one contact area and to separate from the inside of the winding spring (112) in at least one spaced area. The roller blind device according to claim 3, wherein a cross section is formed.   The damping profile (20; 140; 420) is formed to abut against the take-up spring in three contact areas, each having a spacing area between the contact areas. The roller blind device according to any one of 2 and 4.   6. A roller blind device according to any one of the preceding claims, characterized in that the damping profile (20; 140; 220; 320; 420; 520) is formed as a damping hollow profile.   6. The damping profile (620) of claim 1, wherein the damping profile (620) comprises a plurality of profile portions (630) extending in a main stretching direction that are not circumferentially connected at least over the entire length of the damping profile. The roller blind device according to any one of claims.   8. A roller blind device according to claim 7, characterized in that the profile parts (630) are connected to each other by connecting pins (632) surrounding at least the front surface.   The damping profile so that radial movement of the internal or external contact section (22, 24) results in radial movement acting in the same direction of the opposing external or internal contact sections (24, 22). The roller blind device according to any one of claims 1 to 8, wherein a cross section of (20) is formed.   The damping profile so that radial movement of the inner or outer contact section (22a; 422a, 422c) results in movement of at least one other inner or outer contact section (22b, 22c; 422b). The roller blind device according to any one of claims 1 to 9, wherein a cross section of (20; 420) is formed. Said damping profile (20) is formed as a damping hose having a polygonal cross section;
The cross section
11. A concave recess including the inner contact section (22) and a convex protrusion including the outer contact section (24). The roller blind device according to Item.   The damping profile (520) is preferably formed as a damping hose (530) having a circular cross section and contact pins (532) facing radially inward and / or radially outward from the damping hose (530); 11. A roller blind device according to any one of the preceding claims, characterized in that an inner or outer contact section (522) is provided at the distal end (532c) of the contact pin (532), respectively.   The damping profile (20; 520) is characterized in that it has a smaller inner diameter and / or a larger outer diameter than the annular space (16) in which the damping profile is arranged in the built-in state, in a non-built-in state. The roller blind device according to any one of claims 1 to 12.

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