Patent Grant
7533852
The invention relates to a retaining clip for fastening a plurality of approximately parallel-running, elongate articles to a structure, in particular for fastening lines, pipes or cables, having a base part, in which receivers for the elongate articles are formed, having at least one partition between two such receivers, which comprises a front side and a rear side, wherein there are provided for securing the elongate articles in the receivers at least one first latching finger at the front side and at least one second latching finger at the rear side of the partition.
The known retaining clips are used in particular to fasten brake lines and cables in motor vehicles in a simple and inexpensive manner. By means of blocking fingers an unintentional detachment of the articles as a result of shaking or vibrations is prevented. The blocking fingers allow only a movement of the article in the assembly direction, while blocking a movement in the opposite direction. They offer only a slight resistance when the article is introduced in the assembly direction, and represent a considerable obstacle when the article is to be removed counter to assembly direction. Because the technology has been known for years, such clips are comparatively inexpensive to manufacture.
Known retaining clips however have the following drawbacks:
On the one hand, opposing blocking fingers have to be arranged a specific minimum distance apart from one another in order to allow the article to be fixed to pass through with sufficient ease. In the case of multiple receivers, said minimum distances add up and result in the retaining clip taking up a relatively large amount of space.
On the other hand, the retaining clip widens when an article is to be introduced. As the article is introduced, the latching fingers are compressed, causing spreading of the retaining clip. This is very disadvantageous especially when a plurality of articles are to be introduced simultaneously, particularly in one working step, into the retaining clip because the extra space needed adds up. Because of the deformation of the retaining clip a simultaneous introduction of a plurality of articles is difficult or impossible. The spreading is particularly pronounced when the retaining clip is of a compact design.
With known retaining clip geometries the only choice available was between two disadvantageous variants. Either the retaining clip had large distances between the blocking fingers, in which case the spreading was admittedly slight but the retaining clip was very large. Or the retaining clip was provided with minimal distances between the blocking fingers, in which case the retaining clip admittedly took up little room but the spreading during introduction of the articles was so great that a simultaneous introduction of a plurality of articles was difficult or impossible.
The object of the present invention is therefore to provide a particularly compact retaining clip, which during the simultaneous insertion of a plurality of articles takes up only a small amount of extra space and/or presents only slight spreading.
Said object is achieved by a retaining clip according to the invention in accordance with the features of claim 1. Further developments, which may occur individually or in combination, are the subject matter of the sub-claims.
The retaining clip according to the invention for, in particular, simultaneous fastening of a plurality of approximately parallel-running, elongate articles to a structure, in particular for the fastening of lines, pipes or cables, having a base part, in which receivers for the elongate articles are formed, having at least one partition between two such receivers, which comprises a front side and a rear side, wherein there are provided for securing the elongate articles in the receivers at least one first latching finger at the front side and at least one second latching finger at the rear side of the partition, is characterised in that the width of each latching finger is smaller than the width of the partition and the first latching finger is arranged offset relative to the second latching finger in such a way that no overlapping arises.
The effect achieved by the laterally offset arrangement of the latching fingers is that the latching fingers have to spring back only at one side of the partition. By virtue of the offset arrangement of adjacent latching fingers the widening of the retaining clip during the simultaneous introduction of a plurality of articles is reduced. In particular, a portion of the spreading of the retaining clip is converted into a rotational motion of the individual partitions, which has an advantageous effect upon the extra spatial requirement of the retaining clip. The arrangement according to the invention of the latching fingers allows the arrangement of more latching fingers, which leads to greater security.
With the aid of the base part the retaining clip is fastened in a manner known per se to a structure, for example in the field of vehicle manufacture, to the body of a vehicle. The elongate articles are grasped by the receiver and secured against unintentional detachment with the aid of the latching fingers. With the aid of the partitions a plurality of articles may be held by the same retaining clip.
In an advantageous development of the retaining clip according to the invention, the first latching finger is arranged laterally offset relative to the second latching finger. By virtue of the lateral arrangement an advantageous rotational movement of the partition is effected during introduction of the articles. The distance between the two latching fingers is advantageously 5 to 20% of the width of the partition, preferably 10 to 15% of the width of the partition. The effect achieved by the distance between the two adjacent latching fingers is that two adjacent latching fingers have only a slight influence upon one another and so an unnecessary spreading of the retaining clip during the introduction of a plurality of articles into the respective receivers is avoided.
In a further advantageous development of the retaining clip according to the invention, the partition wall is elbowed between the offset latching fingers. By virtue of the elbow, an adequate amount of space is provided for yielding of a latching finger during introduction. The elbow, on the one hand, reduces the size of the retaining clip because the depth of the elbow may be utilised twice, by two latching fingers, and, on the other hand, reduces the spreading of the retaining clip during introduction because the latching fingers may disappear in the elbow during introduction of the articles.
In a special development of the invention, the partition has an opening, in particular a slot. By virtue of the opening, in particular the slot, adjacent latching fingers are substantially independent of one another. The effect thereby achieved is that the retaining clip acquires extra elasticity, which manifests itself in a lower resistance in the assembly direction when the articles are introduced. The ability of the latching fingers to secure the articles against unintentional detachment remains unaffected thereby.
In a preferred development of the invention, on both sides of the partition in each case two or more vertically offset latching fingers are disposed. By virtue of the arrangement of a plurality of vertically offset latching fingers, additional security against detachment of the articles from the receiver is achieved. Even if an individual latching finger is no longer capable of fulfilling its function, others are available to prevent detachment.
According to the invention, the ratio of the width of an individual latching finger to the width of the partition is advantageously between 1:4 and 1:2, in particular the ratio is approximately 2:5. Said ratio advantageously maximises the retaining ability of the latching fingers, with the proviso of minimal spreading of the retaining clip during the simultaneous introduction of a plurality of articles.
According to the invention, the retaining clip has outer walls, which for securing the elongate articles comprise at least one latching finger. The outer walls therefore perform a similar retaining function to the partitions.
The outer walls are advantageously provided with reinforcing structures. During introduction of the articles the reinforcing structures counteract a widening of the retaining clip in that they compel the latching fingers to deform elastically to a greater extent. Despite such a reduction of the spreading of the retaining clip, simultaneous introduction of a plurality of articles is made possible by virtue of the arrangement according to the invention of the retaining fingers.
The retaining clip according to the invention is advantageously made of elastic material, in particular of plastics material. With the aid of a plastic injection moulding technique retaining clips according to the invention are simple and inexpensive to manufacture.
Further details and advantageous developments, which may arise individually or in combination, are described with reference to the accompanying drawings. The drawings are intended, not to limit the invention, but merely to clarify it by means of an example.
The partitions 4, 4′ each have a front side 12 and a rear side 11. On the front side 12 first latching fingers 5, 5′ and on the rear side 11 second latching fingers 6, 6′ are provided. Adjacent latching fingers 5 and 6 and/or 5′ and 6′ are arranged laterally offset so—viewed from the longitudinal direction of the retaining clip 1—there is no overlapping, which would take up space unnecessarily. The partitions 4, 4′ on their respective sides have two vertically offset latching fingers 6, 6′ and/or 5, 5′ respectively, which provide additional security against unintentional detachment of the article.
The partitions 4, 4′ are elbowed between the offset latching fingers 5, 6 and/or 5′, 6′. The elbow on the one hand provides the latching fingers 5, 6 with enough space to yield when the articles are introduced and on the other hand reduces the required minimum size of the retaining clip 1.
The outer walls 7, 7′ have reinforcing structures 9, which reduce an upward bending of the side walls 7, 7′. The vertical offset H between the latching fingers 5 and 5′ and/or between 6 and 6′ corresponds approximately to the diameter of the article, which is to be fastened and retained in the receiver 8. The retaining clip 1 is made of elastic and particularly robust plastics material.
The partitions 4, 4′ are elbowed, wherein the depth T of the elbow corresponds approximately to the material thickness of the latching fingers 5, 6. During introduction of the article 2 the elbow 14 provides the latching finger 5, 6 with enough space to yield upon elastic deformation of the latching finger 5, 6. The elbow moreover offers a saving of space for the retaining clip 1. The ratio of the width BR of the individual latching fingers 5, 6 to the width BZ of the partition 4, 4′ is approximately 2:5.
The outer walls 7, 7′ have reinforcing structures 9, by means of which an extra stiffness of the outer walls 7, 7′ is achieved. The effect of the extra stiffness is that, when a plurality of articles 2 are simultaneously introduced, the latching fingers 5, 6 are plastically deformed to a greater extent and so space is saved, and/or spreading is reduced.
When a plurality of articles 2 are simultaneously introduced into the retaining clip 1 according to the invention, widening of the retaining clip 1 is reduced as a result of the offset arrangement of the latching fingers 5, 6 because a portion of the widening is converted into a rotational motion of the partitions 4, 4′. A further portion of the widening is taken up by the latching fingers 5, 6, which as a result of the elbow have enough room to yield.
To increase the elasticity of the partition 4, 4′, openings 13 are provided in the partition 4, 4′. The effect of the openings 13 is that the first latching fingers 5 are to a greater extent independent of the second latching fingers 6, thereby making it easier to introduce a plurality of articles 2. The distance A between the first latching finger 5 and the second latching finger 6 is preferably 10 to 15% of the width BZ of the partition 4, 4′. The outer walls 7, 7′ also have a retaining function in that they each have one latching finger 5, 6.
The holding clip 1 according to the invention, for, in particular, simultaneous fastening of a plurality of approximately parallel-running, elongate articles to a structure (not shown), in particular for the fastening of lines, pipes or cables, having a base part 3, in which receivers 8 for the elongate articles 2 are formed, having at least one partition 4, 4′ between two such receivers 8, which comprises a front side 12 and a rear side 11, wherein there are provided for securing the elongate articles 2 in the receivers 8 at least one first latching finger 5 at the front side 12 and at least one second latching finger 6 at the rear side 11 of the partition 4, 4′, is characterised in that the width BR of each latching finger is smaller than the width BZ of the partition 4, 4′ and the first latching finger 5 is arranged offset relative to the second latching finger 6 in such a way that no overlapping occurs. The laterally offset latching fingers 5, 6 allow a particularly compact style of construction of the retaining clip 1, which makes it possible to mount a plurality of articles in the retaining clip 1 simultaneously without the retaining clip 1 being substantially spread, with the result that the fastening of a plurality of articles is enabled in a simple manner.
| Number | Date | Country | Kind |
|---|---|---|---|
| 101 44 153 | Sep 2001 | DE | national |
The present application is a continuation of pending international patent application PCT/EP02/10008 filed on Sep. 6, 2002 which designates the United States and was published in German, and which claims priority of German patent application 101 44 153.3 filed Sep. 7, 2001.
| Number | Name | Date | Kind |
|---|---|---|---|
| 4114241 | Bisping | Sep 1978 | A |
| 4253629 | Wilmes | Mar 1981 | A |
| 5029782 | Andre et al. | Jul 1991 | A |
| 5807018 | Peek et al. | Sep 1998 | A |
| 5947426 | Kraus | Sep 1999 | A |
| 5954300 | Sturies et al. | Sep 1999 | A |
| 6216987 | Fukuo | Apr 2001 | B1 |
| 6450459 | Nakanishi | Sep 2002 | B2 |
| 6565049 | Hahn | May 2003 | B2 |
| 6708931 | Miura | Mar 2004 | B2 |
| 20010019091 | Nakanishi | Sep 2001 | A1 |
| 20040065785 | Miura et al. | Apr 2004 | A1 |
| 20040113027 | Nakanishi | Jun 2004 | A1 |
| 20040144897 | Maruyama | Jul 2004 | A1 |
| Number | Date | Country |
|---|---|---|
| 569297 | Nov 1993 | EP |
| 0 683 343 | Nov 1995 | EP |
| 2 609 507 | Jul 1988 | FR |
| 09-317946 | Dec 1997 | JP |
| 2002-235872 | Aug 2002 | JP |
| Number | Date | Country | |
|---|---|---|---|
| 20050001108 A1 | Jan 2005 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/EP02/10008 | Sep 2002 | US |
| Child | 10814478 | US |
