Summary of the invention
The object of the invention is to improve above-mentioned fixing clamp in an advantageous manner, specifically: fixing clamp can safety and being easily arranged in different types of carrier, and fixing clamp can be made up of the material having compared with low elastic modulus, still guarantees high confining force simultaneously.
According to the present invention, realize this object by the fixing clamp of the feature with claim 1.Accordingly, for being comprised by the fixing clamp of Components installation on carrier: standing part, component can be mounted thereto; And lock section, it is for being arranged on carrier by fixing clamp, wherein lock section comprises terminate in enlarged undercut portions and at least two locking plates, locking plate from terminate in enlarged undercut portions deviate from the free end of standing part extend along the direction of standing part, wherein each locking plate is provided with multiple locking teeth, and locking teeth is arranged on the outside of locking plate away form one another.Multiple locking teeth arranges and is used for safety and is easily arranged in different carriers by fixing clamp, in the opening of particularly vehicle body.According to the state of carrier, particularly have the state of the carrier of different wall, other locking teeths each can provide safe locking.Therefore, same fixing clamp advantageously can use in the opening of carrier with different wall, and does not reduce the lock mass of fixing clamp.
Also advantageously use to have according to the design of fixing clamp of the present invention and be less than about 2300N/mm
2the material, particularly plastic materials of (traction) Young's modulus.Especially, such as about 1000N/mm can be positioned at for (traction) Young's modulus of the material of this fixing clamp now
2to about 2000N/mm
2scope in.
Preferably, (traction) Young's modulus is at about 1250N/mm
2to about 1900N/mm
2scope in; Particularly preferably in about 1300N/mm
2to about 1800N/mm
2scope in, such as about 1500N/mm
2.
Fixing clamp such as can by thermoplastic material particularly propylene (PP) make.This material is used for manufacturing at an easy rate.(traction) Young's modulus of PP is about 1300N/mm
2to about 1800N/mm
2.
Especially, fixing clamp can be injection-molded parts.This provide easy and simultaneously cheap manufacture.
Component can be such as binding locking and to introduce binding locking in binding band.Binding is locking can be arranged on fixing part office with binding band.Can also expect, component comprises the one or more maintenance alar parts for fixed cable or cable stock.
Two locking plates can be arranged in a plane.Also can arrange like this: locking plate and terminate in enlarged undercut portions are arranged in sagittate mode.This architecture provides the fixing and better propagation effect that fixing clamp improves in the carrier, and increase the confining force that fixing clamp can apply.
Can arrange so in addition: each locking teeth is formed a pair to the relevant locking teeth of other locking plates.By paired locking, the confining force of fixing clamp increases.
This external enwergy is arranged like this: each locking plate is arranged three locking teeths.Usually, for the use of fixing clamp, only consider the different carrier of limited quantity.The quantity of three locking teeths on each locking plate is considered such fact and is provided the good compromise between less locking teeth (it can more stably design subsequently) and a lot of locking teeth (it provides the good conformity of the different wall to carrier).
Advantageously can also arrange like this: the orientation of each flank of tooth of locking teeth is different.The flank of tooth be when the opening in fixing clamp insertion vector and pulling force acts on fixing clamp time engage the surface of locking teeth of the rear side of carrier, this pulling force attempts fixing clamp to pull out opening, that is, this flank of tooth is the surface of transmitting confining force.
Can arrange so in addition: compared to the flank of tooth of contiguous locking teeth, the flank of tooth of the first locking teeth comprises the less acute angle of the plane relative to the longitudinal axis perpendicular to terminate in enlarged undercut portions, and the locking teeth of this vicinity is orientated as than the free end of the first locking teeth closer to locking plate.This provide following advantage: each tooth surface is set to substantially same angle against carrier; Compared with when contiguous locking teeth engages, when the first locking teeth engages, locking plate bends from its initial position to a greater degree to longitudinal axis.This different the bending of locking plate is compensated by the flank of tooth of the different set of each locking teeth.As a result, the orientation of the flank of tooth of the locking teeth locked for the wall thickness according to carrier is in substantially parallel relationship to the rear side of carrier, to realize contacting very completely.
Also can arrange like this: the scope of the tip angle of locking teeth is 70 ° to 90 °, particularly about 80 °.This is designed with to be beneficial to and locks and prevent locking teeth damaged when fixing clamp inserts reliably.The shape with this angle also advantageously causes such situation, and the flank of tooth of locking teeth can best on the whole surface against the rear side of the opening of carrier.
Locking plate can also comprise elastic part, thickening wedge-like portion and thick supporting part from the part that they are connected to terminate in enlarged undercut portions.The wall thickness of elastic part is less than the wall thickness of wedge-like portion and is significantly less than the wall thickness of supporting part, and elastic part forms a kind of elastomeric joint and is provided in the resiliently deformable of locking plate on the direction of terminate in enlarged undercut portions.Due to wedge-like portion and supporting part, locking plate has sufficiently high resistance to torsion at longitudinal direction, provides good elasticity and rebound elasticity due to elastic part simultaneously.
Can arrange so in addition: locking plate extends at its inner side Linear in the face of terminate in enlarged undercut portions.Locking plate thus can completely against the surface of terminate in enlarged undercut portions.This allows the large elastic bending of locking plate.
Also can arrange like this: two centering pieces are arranged on terminate in enlarged undercut portions place.During fixing clamp inserts, centering piece prevents an only excessive deformation in locking plate to inner side, and this may cause fixing clamp prejudicially in insertion vector opening.
Advantageously, sealing baffle is arranged on fixing part office, and described standing part is in the face of lock section.This provide following advantage, fixing clamp automatically seals, to guarantee the sealing at least preventing from dabbling when not having further measure around opening.
Particularly can arrange like this: the wall thickness of sealing baffle continues to increase to standing part from free edge.This provide following advantage: sealing baffle is on the one hand highly stable, but the surface of carrier can be attached to well and reliably seal carrier thus simultaneously.
Can arrange so in addition: arrange a contact disk at each free end in the face of standing part of locking plate, described contact disk extends beyond uppermost locking teeth and can against terminate in enlarged undercut portions.The prebuckling of contact disk energy become make when locking plate to terminate in enlarged undercut portions greatly pivotable time realize elastic reaction.In this case, contact disk supports resilience.But the major advantage of contact disk is, they prevent locking plate to be forced through opening in carrier, cause them no longer to be kept by the inward flange of opening, but can freely launch at carrier rear.In this case, provide certain confining force, this stands the surface inspection of fixing clamp.But for larger pulling force, locking plate bends in uncontrolled mode, thus no longer guarantee the reliable maintenance of fixing clamp.If the opening that present fixing clamp is forced through in carrier is excessively far away, then the edge of contact disk contact openings, so that locking plate can not launch in uncontrolled mode.When pulling force is applied on fixing clamp now, contact disk is along the boundary slip of opening, until the locking teeth of foremost clamps again.
Embodiment
Fig. 1 illustrates the perspective view of the exemplary embodiment according to fixing clamp 10 of the present invention.This fixing clamp comprises standing part 12 and lock section 14.
The lock section 14 of fixing clamp is arranged for the opening of insertion vector, so that locks in place wherein.Standing part 12 is arranged for and keeps other components, so that standing part is attached to carrier by lock section 14 subsequently, lock section is locks in place in the opening of carrier.
Here fixing clamp 10 is the injection-molded parts be integrally formed.As material, preferably use polypropylene (PP), it has about 1300N/mm usually
2to about 1800N/mm
2(traction) Young's modulus.In example shown here, use and there is about 1450N/mm
2the material of (traction) Young's modulus.
Lock section 14 comprises terminate in enlarged undercut portions 16 and two locking plates 18, and locking plate is formed as identical in this exemplary embodiment.Two locking plates 18 also have the symmetry plane along its longitudinal direction, and wherein this symmetry plane is arranged so that the longitudinal axis of terminate in enlarged undercut portions 16 is also arranged in this plane.
Locking plate 18 inner side Linear of terminate in enlarged undercut portions 16 faced by it extends, and is step-like in outside.
Two locking plates 18 from terminate in enlarged undercut portions 16 deviate from the free end of standing part 12 extend along the direction of standing part 12.Each locking plate 18 is provided with multiple locking teeth 22,24,26, and locking teeth is arranged on the outside of locking plate 18 away form one another.In embodiment shown here, each locking plate all employ three locking teeths.
The relevant locking teeth of each locking teeth 22,24,26 and other locking plates 18 (specifically locking teeth 22 or locking teeth 24 or locking teeth 26) is formed a pair.Because paired locking teeth is all arranged on difference " highly " place, fixing clamp can be inserted and have in the carrier of different wall; Corresponding " cooperation " of locking teeth is to then realizing locking.
Locking teeth 22,24,26 has the flank of tooth 28,30,32 respectively.This is that side of transmitting confining force when pulling force is applied on fixing clamp of locking teeth, and this pulling force attempts the opening pulled out by fixing clamp in carrier.The orientation of each flank of tooth 28,30,32 of locking teeth 22,24,26 is different.
As being clearly shown that in fig. 2, compared to the flank of tooth 30,32 of contiguous locking teeth, the flank of tooth 28 of the first locking teeth 22 comprises the acute angle less relative to the plane of the longitudinal axis perpendicular to terminate in enlarged undercut portions 16, and the locking teeth of this vicinity is orientated as than the free end of the first locking teeth 22 closer to locking plate 18.Which compensates thus: when different locking teeths engages, locking plate 18 obtains far different to terminate in enlarged undercut portions pivotable, and then the flank of tooth of locking teeth tilts far different.When different teeth the flank of tooth original state (that is, when locking plate not pivotable time) orientation different time, ensure that the corresponding rear side initiatively engaging carrier flank of tooth general parallel orientation.
The tip angle of locking teeth 22,24,26 is in the scope of 70 ° to 90 °.In exemplary embodiment shown here, the tip angle of locking teeth 22,24,26 is about 80 °.
If from according to obtaining the sectional view of Fig. 2, two tips of locking teeth 22 are maximum two points of mutual distance.In exemplary embodiment shown here, these two spaced 9.8mm in tip.
From the part 34 that locking plate 18 is connected to terminate in enlarged undercut portions 16, locking plate 18 comprises thin elastic part 36, thickening wedge-like portion 38 and thick supporting part 40.
In this exemplary embodiment, part 34 has the height of 2.6mm here.
Elastic part 36 than thickening wedge-like portion 38 and thick supporting part 40 thin, locking teeth 22,24,26 rises from supporting part 40.This wedge-like portion 38 is parts that the cross section of elastic part 36 increases to supporting part 40.
There is provided the favourable design of the locking plate of the part with different-thickness, to use the material with lower (traction) Young's modulus to be used for fixing clamp.
In terminate in enlarged undercut portions 16, two centering pieces 42 are set.This prevents locking plate too far to terminate in enlarged undercut portions pivotable.
At standing part 12, place arranges sealing baffle 44, and sealing baffle 44 is in the face of lock section 14.The wall thickness of sealing baffle 44 continues to increase to standing part 12 from free edge.Such as, wall thickness can double.In embodiment shown here, the wall thickness of sealing baffle 44 increases to 0.6mm from 0.3mm.
In the exemplary embodiment shown, sealing baffle 44 tilts towards the direction of lock section 14 angle of 27 °.
The tip of lock section 14 is here 8mm to the distance of the bottom margin of the free edge of sealing baffle 44, and the distance to the base portion at the tooth rear portion of the first locking teeth 22 is 2.1mm.
Substantially, correspond to the application expected, also can select any other size.
Arrange contact disk 46 at each free end in the face of standing part 12 of locking plate 18, contact disk extends beyond uppermost locking teeth 26.Contact disk 46 is also overlapping with sealing baffle, so that when guaranteeing to be pressed into when fixing clamp in the opening in carrier, at least contact disk 46 keeps the EDGE CONTACT with the opening of carrier.
At standing part 12 place, the binding band 52 that side deviating from lock section 14 arranging binding locking 50 above sealing baffle 44 and can introduce in binding locking 50.
Fig. 3 illustrates the second exemplary embodiment according to fixing clamp 10 of the present invention.This fixing clamp 10 does not have sealing baffle 44.In addition do not have essence different, particularly in the region of lock section 14.Only should it is mentioned that, on that side deviating from lock section 14, the fixing alar part 54 of T-shaped is formed in standing part 12 place.
Fig. 4 illustrates the 3rd exemplary embodiment according to fixing clamp 10 of the present invention.On that side deviating from lock section 14 above enhanced leaktightness baffle plate 45, this fixing clamp 10 comprises two the fixing alar parts 56 vertically stretched out from standing part.
Fig. 5 illustrates the 4th exemplary embodiment according to fixing clamp 10 of the present invention.The lock section 15 that this exemplary embodiment comprises reinforcement and the sealing baffle 45 strengthened.That side deviating from lock section 14 of standing part 12 arranges binding locking 50 and binding band 52 above enhanced leaktightness baffle plate 45.
The function of fixing clamp 10 can be described below:
Fixing clamp 10 for by Components installation at carrier.As mentioned above, such as this component can be binding locking 50 and the binding band that will be introduced into binding locking 50 52 (also see according to Fig. 1,2 and 5 exemplary embodiment).
As illustrated in figures 3 and 4, component can comprise the one or more maintenance alar parts 54,56 for fixed cable or cable stock.
Such as insert in insertion vector in the process in main component, clamp operation is carried out as follows:
Have in lock section 14 insertion opening of two locking plates 18.Elastic part 36 forms a kind of elastomeric joint and provides locking plate 18 towards the resiliently deformable in the direction of terminate in enlarged undercut portions 16.
According to the thickness of carrier, be arranged on paired locking teeth 22,24 or 26 locks in place at suitable " highly " place.
Such as fixing clamp 10 can insert there is different-diameter or size circular hole or slotted eye in.The diameter energy Change Example 1mm according to appointment of circular port.
Exemplary embodiment shown in Fig. 1 and 2 such as can use in the circular hole of diameter with about 6.2mm to 7mm.
The scope that the size of elliptical aperture can change is about 1mm, that is, the elliptical aperture of such as 6x12mm to 7x12mm, as according to the situation in the exemplary embodiment of Fig. 1 and 2.
The thickness of carrier equally can Change Example 3mm according to appointment.But, can same fixing clamp be used, because multiple locking teeth guarantees how concrete thickness all has at least one pair of locking teeth by " being applicable to ".Therefore, in the exemplary embodiment of Fig. 1 and 2, fixing clamp 10 can use in the main board of thickness with more than 0.5mm to 3mm.
The power that is less than 40N can be used according in fixing clamp 10 insertion opening of Fig. 1 and 2.
The confining force of fixing clamp 10 is at least about 150N.
The optimum working temperature scope of fixing clamp 10 reaches about 80 DEG C.