CN1930026A

CN1930026A - Strap tension indication

Info

Publication number: CN1930026A
Application number: CNA2005800078236A
Authority: CN
Inventors: H·维特
Original assignee: Britax Roemer Kindersicherheit GmbH
Current assignee: Britax Roemer Kindersicherheit GmbH
Priority date: 2004-03-12
Filing date: 2005-03-07
Publication date: 2007-03-14
Also published as: GB0405550D0

Abstract

A safety harness webbing strap (1) has a piece of elastomeric belt (2) stitched (3) to it at two points along its length. The position of the two stitchings along the length of the strap is such that in the relaxed state of the strap, with not tension in either the strap or the belt, the later draws a bight or belly (4) into the strap. Two lengths (5,6) of sleeving are stitched into the same points (3). The elastomeric belt is threaded within the lengths of sleeving. These are of equal length and jointly extend for the full length of the elastomeric belt in its relaxed state. When the elastomeric belt is tensioned, it opens at the joint between the two lengths (5,6) and stretches to a length greater than the sleeving. Thus it becomes exposed to view between the lengths of sleeving, as shown in Figure 2. The extent of stretching of the belt is limited by the distance along the strap between the stitching. Once the strap is straightened, the belt will stretch no more.

Description

The belt tension indication

Technical field

[0001] the present invention relates to a kind of device that is used to indicate belt tension.

Background technology

[0002] in automation children restraint system, typically, the child safety seat on adult seat that is fixed on automobile needs tension that children are remained on band in the child seat and/or tension the child seat bolt is tied up band in vehicle.For preceding a kind of band, normally this is to bring realization by pulling out central authorities, and this central zone is fixed to independent band and strains independent band, particularly shoulder belt.In the later case, tension may bring realization by utilizing traditional band regulating control to tighten.

[0003] except feeling them, the tradition tension arranges do not have the user can be used for measuring the method for the tension force in the band.

[0004] in this manual, term " tension indicator " is to be used for the unflagging device of expression indication.

[0005] the purpose of this invention is to provide a kind of indicating device, be used for indicating the tension force of restraining.

Summary of the invention

[0006] according to the present invention, the tension indicator of combining with band is provided, wherein Dai tension force will be instructed to out, and this combination comprises:

● band, and

● tension indicator, described tension indicator comprises:

● elastic component, length along band, its end is fixed on two positions, elastic component length than the non-tension freely between its end, the fixed position vertically further separates band, thus, and when belt sag, elastic component forms a curve between the fixed position, and

● indicating device, when band and elastic component are stretched when being in tension, it is used for visually indicating the elongation of elastic component, thus, may be displayed in the band and does not relax.

[0007] should understand, also unnecessary by " end " of elastic component is its terminal end, but its effective end, because they are represented the fixed position and in use tensile force are delivered to elastic component.For example, in one embodiment, wherein elastic component is the length that is sutured in the elastomeric belt of band, sew up and terminal end between residual, do not participate in carrying out the elongation of elastic component with the tension force in the index strip.

[0008] oversleeve can be fixed in band at the end away from elastomeric material.For example, elastomeric material can be fixed in band by oversleeve.But oversleeve and elastic component are sewn onto together and are with preferably by same stitching.

[0009] therefore, in a preferred implementation:

● elastic component is an INT COMP, and

● indicating device is:

● an external member, its end is fixed to the end of elastic component, and parcel elasticity INT COMP, and this external member has

● at least one opening, when being arranged to externally member elongation, it opens, supply to observe with the exposed inner elastic component.

This layout is such: makes the terminal fixed with each other of two members, and is fixed in band, and during use, outside and INT COMP both elongations.

[0010] special:

● elastic component is that the length along band is fixed in the elastomeric material of the certain-length of two positions, and than the length of the elastomeric material of non-tension freely, the fixed position vertically further separates belt; And

● visual indication is an oversleeve that is fixed in band, and wherein elastic material containing is in oversleeve, and when not straining, oversleeve has the length that can cover elastomeric material;

Layout is such: when the band tension, elastomeric material is pulled out from oversleeve, and the indication that is exposed and is tightened up with observation band.

[0011] oversleeve can be provided in the arbitrary end of elastomeric material, perhaps even at both ends.If it is fixed at one end, it will expose elastomeric material at the other end.If it is fixed on two ends, this exposure mediates.

[0012] in another embodiment:

● elastic component is the external member with center cavity, and

● indicating device comprises:

● at least one opening in the elasticity external member, and when external member extends, be arranged to and open, and

● an INT COMP, it is provided in the elasticity external member in-to-in cavity, and when external member was in its extended state, INT COMP was visual by described opening or each opening.

[0013] in a substituting example, INT COMP is to prolong member, and its end is fixed in band, preferably is fixed to the end of external member.Selectively, INT COMP is one can not prolong member, and it is fixed in band, and preferably one of its end is fixed in one of end of external member.In addition, INT COMP externally component inside only tied down by external member.

[0014] preferably, elastic component is a coil spring, and it is fixed in band by terminal spring eye, and indicating member is bolt or rod at spring inner.Coil spring can be the type of coil bound when not having tension force, blocks indicating member thus, up to abundant stretching to open the coil of spring.

Description of drawings

[0015] in order to help to understand the present invention, now will be and with reference to the accompanying drawings by example, its two specific embodiment are described, in the accompanying drawing:

[0016] Fig. 1 is the transparent view when being in relaxed state according to a tension indicator of the present invention and a band;

[0017] Fig. 2 is the similar view of indicating device when being in tension;

[0018] Fig. 3 be second kind of tension indicator of the present invention and band be similar to Fig. 1-view;

[0019] Fig. 4 is the view that is similar to Fig. 2 of second tension indicator.

The specific embodiment

[0020] Fig. 1 and Fig. 2 at first with reference to the accompanying drawings, a band shape that is used for the type of safety strap is with 1, for example, be used for children are strapped in safety seat, perhaps be used for the safety seat bolt is tied up at vehicle, along it length its have by sewing up the 3 one section elastic belt 2 that is stitched into its two positions.Two suture location along the length of being with are such: when band is in relaxed state, all do not have tension force in band or belt, and the latter forms a curve or belly 4 in band.

[0021] two of oversleeve length 5,6 are seamed to same position 3.Elastic belt is curled and puts into oversleeve length.These are equal lengths, and when relaxed state, are elongated to the overall length of this elastic belt jointly.Oversleeve is the type that is not easy to wrinkle, and such as the nonwoven cloth material of filling and rolling, as shown in Figure 1, when lax, it wraps up elastomeric belt fully.

[0022] when elastomeric belt is strained, its joint between two length 5,6 reveals, and is stretched to the length longer than oversleeve.Thus, it is exposed to observe, as shown in Figure 2 between the length of oversleeve.The length of the elongation of belt is limited by the distance along band between sewing up.In case band is straightened, belt will no longer extend.

[0023] transmit tension force if band is parallel to belt, when belt extends fully, the true tension force in band will be tension force in the belt or bigger.

[0024] length of belt and the separation in the band of sewing up will be selected to guarantee that belt extends fully when tension force reaches required rank.

[0025] this required rank can be simply indicated by belt that exposes and the belly that is drawn out band.

[0026] selectively, belt can be coloured, and thus, for example exposed portions is red R when presenting big inadequately tension force, but red length is limited, and when belt extended fully, green portion G was exposed to the either side of red part thus.

[0027] can select in the example at another, elastic belt can by for one section shock cord of the length of elastomeric material or elastic component or or even coil spring replace.

[0028] with reference now to Fig. 3 and Fig. 4, the tension indicator shown in comprises the coil spring 11 of coil bound type here, and as shown in Figure 3, at this moment it does not carry tension force.It end it have spring eye 12, by spring eye 12, it is stitched into and is with on 15 by sewing up 14.Among Fig. 3, when band is when relaxing, the spring the inside is lax and not visible, and a bolt 16 is loaded into.When the band tension, it is visual that bolt becomes, and with the tension force of indication in band, this is the same mode with the tensioning by exposure belt index strip in Fig. 2.

Claims

1. tension indicator with band combination, wherein Dai tension force will be instructed to out, and this combination comprises:

● described band, and

● tension indicator, described tension indicator comprises:

● elastic component, end at it is fixed in two positions along the length of described band, than between its end freely, the elastic component length of non-tension, the fixed position vertically further separates described band, thus, when described belt sag, described elastic component forms a curve between described fixed position, and

● indicating device, when described band and described elastic component are stretched when being in tension, it is used for visually indicating the elongation of described elastic component, thus, may be displayed in the described band not lax.

2. tension indicator according to claim 1 and band combination, the fixed end of wherein said elastic component is its terminal end.

3. according to the tension indicator and the band combination of claim 1, the fixed end of wherein said elastic component is by residual live end that separates from terminal end.

4. according to the tension indicator and the band combination of claim 1, claim 2 or claim 3, wherein said fixed end is directly fixed on described band.

5. according to the tension indicator and the band combination of claim 1, claim 2 or claim 3, wherein said fixed end is fixed in described band by described intermediate member.

6. according to the tension indicator and the band combination of claim 5, wherein said intermediate member forms the described visual indication of part.

7. according to the tension indicator and the band combination of aforementioned each claim, one of wherein said elastic component and described visual indication are at least in part in another in-to-in INT COMP as external member.

8. tension indicator and the band according to claim 7 makes up, wherein:

● described elastic component is an INT COMP, and

● described indicating device is:

● an external member, be fixed in the end of described elastic component at its end, and wrap up described elasticity INT COMP, described external member has

● at least one opening, it is arranged to open when described external member extends, to expose described inner elastic member for observing.

This layout is such: makes the terminal fixed with each other of two members, and is fixed in described band, and during use, described outside and described INT COMP both elongations.

9. tension indicator and the band according to claim 7 makes up, wherein:

● visual indication is an oversleeve that is fixed in band, by elastic material containing in oversleeve, when not straining, oversleeve has the length that can cover elastomeric material;

10. according to the tension indicator and the band combination of the claim 9 that is attached to claim 4, wherein said oversleeve is fixed in described band at the end away from described elastomeric material.

11. according to the tension indicator and the band combination of the claim 9 that is attached to claim 4, wherein said elastomeric material is fixed in described band by described oversleeve.

12. according to the tension indicator and the band combination of claim 9, claim 10 or claim 11, wherein said oversleeve is provided at an end of described elastomeric material, is exposed to the elastomeric material of the other end when elongation.

13. according to the tension indicator and the band combination of claim 9, claim 10 or claim 11, wherein, described oversleeve is provided at the two ends of described elastomeric material respectively, the elastomeric material in the middle of being exposed to when elongation.

14. according to the tension indicator and the band combination of each claim of claim 9-13, wherein said elastomeric material itself is painted.

15. according to the tension indicator and the band combination of each claim of claim 9-13, wherein said elastomeric material provides color or mark level, with according to the degree that exposes, indicates the degree of the tension force in described band.

16. according to the tension indicator and the band combination of claim 4, wherein:

● described elastic component is the external member with center cavity, and

● described indicating device comprises:

● at least one opening in described elasticity external member, and when external member extends, be arranged as and open, and

● an INT COMP, it is provided in the described elasticity external member in-to-in cavity, and when external member was in its extended state, INT COMP was visual by described opening or each opening.

17. according to the tension indicator and the band combination of claim 16, wherein said INT COMP is to prolong member, wherein its end is fixed in described band, preferably fixes at the end of described external member.

18. according to the tension indicator of claim 16 and band combination, wherein said INT COMP is to prolong member, it is fixed in described band, and preferably one of the end at it is fixed in one of end of described external member.

19. according to the tension indicator and the band combination of claim 16, wherein said INT COMP is only to be tied down in described external member the inside by described external member.

20. according to the tension indicator of each claim of claim 16-19 and band combination, wherein said elastic component is a coil spring, is fixed in described band by its terminal spring eye, and described indicating member is bolt or rod in described spring the inside.

21. according to the tension indicator and the band combination of claim 19, wherein said coil spring is such, that is: be coil bound when not having tension force, blocks described indicating member thus, up to fully being stretched to the coil of opening described spring.