CN204118613U - A kind of bent hinge for connecting wire casing - Google Patents

Abstract

For connecting a bent hinge for wire casing, its structure is, the middle part of hinge is arc groove, and the side that the two ends that hinge is connected with wire casing deviate from arc groove has protruding hierarchic structure.When described arc groove is semi arch groove, the bend resistance ability of hinge is better.The utility model adopts the hierarchic structure of arc groove and projection, makes hinge not only be easy to bending, simultaneously the stress dispersion when bending, and uniform force improves resistance to fracture energy during hinge bending; Connect wire casing additionally by hierarchic structure, also improve bonding strength.

Description

A kind of bent hinge for connecting wire casing

Technical field

The utility model relates to a kind of hinge of auto-parts, particularly relates to a kind of bent hinge for connecting wire casing.

Background technology

Have a large amount of electric wiring accessories in auto-parts, need to adopt comparatively multiple trunking and bellows to install these electric wirings, the wire casing purposes in particular for inside electric appliance wiring is the most extensive; It has insulation, preventing arc, fire-retardant from the feature such as putting out, and it plays mechanical protection and electic protection effect to the wire laid wherein.When wire casing assembles, need first to be installed in bellows by electric wire, bellows is installed in wire casing again.

Application wire casing is in the car according to inner space of vehicle and size design, and therefore, wire casing often has the feature such as curved surface or structure irregularity; In order to improve the effects such as bonding strength, often need several wire casings to be connected through the hinge, and in order to adjust the position of each wire casing, this hinge often needs to bend frequently.Also be not specifically designed to the hinge connecting this type of wire casing at present, the connection hinge that current actual production adopts has structure as shown in Figure 2, its monnolithic case is a strip structure, such structure is as easy as rolling off a log when bending to rupture due to unbalance stress, is more not suitable for the frequent bending during assembling of wire casing position; Therefore, at present for connecting the hinge of wire casing because structural design intensity difference, there is the shortcomings such as not resistance to bending, the even easy fracture of unbalance stress.

Utility model content

The purpose of this utility model is to provide a kind of bent hinge for connecting wire casing, and it has, and structure stress is all even not easily bends the advantages such as fracture.

The utility model is achieved like this, a kind of bent hinge for connecting wire casing, is characterized in that, the middle part of described hinge is arc groove, and the side that the two ends that hinge is connected with wire casing deviate from arc groove has protruding hierarchic structure.

Preferred structure is: described arc groove is semi arch groove.

The beneficial effects of the utility model are: the utility model adopts the hierarchic structure of arc groove and projection, make hinge not only be easy to bending, simultaneously the stress dispersion when bending, and uniform force improves resistance to fracture energy during hinge bending; Connect wire casing additionally by hierarchic structure, also improve bonding strength.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model when being connected with wire casing.

Fig. 2 is the schematic enlarged-scale view of the utility model when being connected with wire casing.

Fig. 3 is the structure amplification stereogram of the utility model when being connected with wire casing.

Fig. 4 is the structural representation of existing hinge when being connected with wire casing.

Description of reference numerals, 1, wire casing main body 2, the attached body 3 of wire casing, hinge.

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is described further.

As shown in Figure 1, Figure 2 and Figure 3, the utility model is achieved like this, the middle part of described hinge 3 is arc groove, and the side that the two ends that hinge 3 is connected with wire casing deviate from arc groove has protruding hierarchic structure.In use, the hierarchic structure being positioned at hinge 3 two ends respectively body 2 attached with wire casing main body 1 and wire casing is connected, when online groove body 1 and the attached body 2 of wire casing need bending to fasten, the arc groove be positioned in the middle part of hinge 3 bends under external force, crooked place is fixed on the minimum place of arc groove thickness, the direction, the center of circle of arc groove is pointed in its bending direction, makes that the stress that bends is dispersed on arcwall face to come like this, avoids hinge fatigue fracture; Especially, when arc groove is semi arch groove, the Resisting fractre ability of hinge is better; Two ends due to hinge 3 are protruding hierarchic structure, large in the middle part of its Thickness Ratio, are also beneficial to the bonding strength improving hinge 3 and wire casing main body 1 and the attached body 2 of wire casing, avoid broken end.

When automobile wire casing assembles, in the wire casing of said structure, bellows is installed, inside bellows, is inserted in electric wiring, regulated by hinge 3, make bellows outer wall be close to wire casing inwall to fix, bellows be positioned at outside wire casing part extend fixing along ripple pipe clamp muscle or bellows assembling position; Finally by the card window or card nose that are positioned at wire casing outer end, wire casing is fixed on automobile assembling position.

Can be found out by accompanying drawing 4, the elongate configuration of the size uniform that the common wire casing connecting hinge chain of tradition adopts, its crooked place is not fixed, and direction and the stress of bending all cannot be determined, because the defective part of structure the most easily bends, the stress produced during bending herein very easily causes hinge break.

Claims (2)

1. for connecting a bent hinge for wire casing, it is characterized in that, the middle part of described hinge is arc groove, and the side that the two ends that hinge is connected with wire casing deviate from arc groove has protruding hierarchic structure.

2. as claimed in claim 1 for connecting the bent hinge of wire casing, it is characterized in that, described arc groove is semi arch groove.