CN1114013A - Device for interconnecting an elongate element and a support for said element - Google Patents

Abstract

This device includes a sliding piece whose shape can allow it to slide relatively to a long piece and insert coaxially in the support and contact the long piece closely. The sliding rod has two side lips and is suitable for working together with the slide track which is used for clamping the sliding piece and is formed in the support. The lips and slide track tilt relatively to the axis of long piece. The lip(5) is circular in shape and limits a middle contraction portion, thus each lip(5) of sliding piece obtains a self clamping in the slide track of its relevant support. Said device can deformation less and damage less bear the prestressing force of very high assembly. The smaller overall size can be obtained even the prestressing force increasing unnormally. It also includes concrete examples of various anchoring pieces with one supporting column to connect spinal composite bar.

Description

Device for interconnecting an elongate element and a support for said element

The present invention relates to the device that a supporting member that is used for this part of a long elements and one supporting is connected.

As everyone knows, in a lot of fields (Motor Vehicle, aviation, medical treatment) wish that all mechanical structure reduces the overall dimensions of assembly when gaining in strength.For example, aspect the artificial limb in medical treatment, the combination of two parts normally obtains by being threaded, and the overall dimensions that outstanding head has increased artificial limb causes patient that artificial limb is shunk considerably.

The dove-tail assembly also is known, but can not support a high combined prestress and can not resist big torsion.

Therefore, the purpose of this invention is to provide one and connect a long elements and to its device of supporting member, this device can support very high assembly prestressing force, and if prestressing force increase in extraordinary mode, connect indeformable or do not break.

According to the present invention, connection set comprise shaping like this slider so that it can be slidably inserted into supporting coaxially and contact tightly with long elements with long elements, described slider comprises two lateral lips, they are fit to clamp the slideway co-operation with the slider that is arranged in the supporting, lip tilts with the relevant slideway axle with respect to long elements, and therefore each lip that slides in the slideway of the supporting that is associated obtains from clamping.

In one embodiment of the present of invention, the lateral lip of slider is by transverse bending and be placed in the auxiliary tunnel of the supporting member that forms described tilted slideway.

According to another characteristic of the invention, the lateral lip of feature has the cross-sectional profiles that a straight line surrounds and is placed in the auxiliary slot of the supporting member that forms described tilted slideway.

In concrete an application, the invention provides a spinal bone synthesizer, wherein long elements is a bar, it is level and smooth or coarse surface is arranged and along being extended by the backbone of alignment, when its supporting is a screw thread the or when hook of U-shaped body is arranged, the slider that is used for clamp lever slides into its anchoring piece that is made of screw thread or hook.

The description of the accompanying drawing that further aspect of the present invention and advantage will be followed below reference shows that accompanying drawing illustrates several embodiments of the present invention by the example of indefiniteness.

In the accompanying drawings:

Fig. 1 is the perspective view according to the part of first embodiment's of a connection set of the present invention incision.

Fig. 2 is the perspective view according to second embodiment's of device of the present invention partly cut-away.

Fig. 3 is vertical half front view and the semi-section view along Figure 23-3 line.

Fig. 4 is an end elevation view according to the 3rd embodiment of connection set of the present invention.

Fig. 5 is the perspective exploded view of four embodiment of the invention, and this invention is applied to the assembly of bearing post (Pedicular) double-screw bolt and a bar, and this bar has shaggy spinal bone synthesizer.

Fig. 6 is the perspective view that makes up the partial cut of bar shown in Figure 5 and bolt by a slidably slider according to the present invention.

Fig. 7 is the side view of slider slidably shown in Fig. 5 and 6.

Connect a long elements 1 in the middle of the device shown in Figure 1, for example bar and one is for described supporting 2, this two be combined to form an X-shape structure.This device comprises a slider 3, and its profile that has makes it to insert supporting coaxially slidably with long elements 1 and closely contacts with the latter.

, in that a groove 4 that is formed in the supporting 2 is arranged near long elements 1 bottom, can support to it in 2 o'clock along stretching by supporting at long elements 1, groove 4 also has the profile that can settle slider 3 for this reason.The size that slider has makes when inserting groove 4 fully surperficial 2a of its surface and supporting 2, and 2b flushes and abuts against part 1 supporting and is clamped in supporting 2, and slider 3 has two lateral lips 5, and it can be placed in the auxiliary tunnel 10 in the supporting 2 traversingly.Each tunnel 10,11 has determined that one of these slideways of slideway 6(are illustrated among Fig. 3 with symbol 6, and this part also is effective to assembly shown in Figure 1).The upper and lower surface of tunnel 10,11, slideway 6 and lip 5 favour the axis X-X of long elements 1 with same angle (α).Angle [alpha] is little specifically, is about 2 ° to 6 °, has therefore been exaggerated widely for ease of being described among Fig. 3.

Two lateral lips 5 towards the direction of the upper surface 2a of supporting member 2 by transverse bending and have and the curved profile of the remainder same way as of the side surface of the slider 3 that stretches out from slider 3.Like this, each lip 5 is determined by second expansion that is placed in that side direction stretches into that narrow first portion 7 being provided with in the throat that the relative circular protrusions 8 of two of groove 4 determine and one aligns towards surperficial 2a and circular portion.These two-part 7,9 are received in their tunnels 10 separately of the appropriate section that is formed on supporting 2.These two enlarged 9 are placed in the corresponding side direction slideway 6.The part that connects the slider 3 of the lip 5 that is adjacent to bar 1 has one to aid in the profile 12 of bar 1 so that engage with bar 1 certainly.

This assembly can obtain very simply: bar 1 is inserted in the minor bottom of groove 4, and slider 3 is along the surface slip of bar 1 and the appropriate section of the insertion groove 4 that slides then.The insertion of lip 5 in tilted slideway 6 certainly from the latter's lower end at arrow F(Fig. 3) direction produces.Slider 3 is promoted to reach the position that an end that moves at it clamps slider 3 fully so that lip 5 slides up to it in tunnel 10,11 and slideway 6 by a proper tools then.The position of in the end mentioning, two side surface 2b of three surfaces of slider 3 and supporting member 2 and insert surperficial 2a alignment.

Fig. 2 and 3 described structures are different from aforementioned structure, and here, each of the side surface of slider 13 comprises a circular protrusions 14, and its auxiliary flute 15 and long elements that enters in supporting member 16 is a cylindrical bar 17.Correspondingly, the end 18 that holds the tunnel of bar 17 is that part is columniform, and auxiliary incomplete cylinder shape groove 19 forms and has the end 30 of an expansion, yet stretches to the lower edge with respect to bar 17, and their first constriction 22 is connected to the projection 14 of adjoining by a circular portion.

Just now the assembly of Miao Shuing had following advantage.

After assembling, because slider 3 or 13 upper surface and the upper surface of supporting 2,16 are that then the thickness of assembly is identical with the thickness that supports 2 or 16 basically for concordant this fact basically.This fact is suitable for slider 3,13 equally and supports 2,16 side surface, so that the overall dimensions of assembly is significantly littler than the sort of assembly that is threaded.

With the threaded components of two profile bodies of cross shaped head structure, or wedge shape assembly difference, assembly apparatus of the present invention as already mentioned can dislocation-free or even is not had shifting ground king-sized combination of supporting and give stress.Therefore, when it bore a load, this device was not subjected to external stress or pressure influence.Really, lip 5 in the tunnel of supporting 2,16 assist formation or 21 squamous shape, curved profile with the circle of these lips, make even very high horizontal torsion is applied to the bearing of trend of lip 5,21, can not cause connecting distortion (the assembly body 1,2 that is provided or 17,16 and the material of slider 3,13 be to have sufficient intensity).

In the embodiment shown in Fig. 2 and 3, any extraction of the slider under projection 14 and the 15 opposing transverse force influences of their groove, this additional technical result is provided by lip 21.

It is to need special preventive measure reliably and not that possible very high prestressing force requires a component system.Be included in bar 1 or 17 endwisely slip or rotate of supporting in 2,16 with regard to a resulting very fastening or very stable connection with regard to long elements 1 externally applied forces on the supporting member 2,16.

The effect of above-mentioned technology is expressed by arrow F1, F2, F3, F4: arrow F1 is illustrated in the precompression of the bar 17 on the slider 13; Arrow F2 has represented to put on the power of lip 21 under pressure F1 effect, this power is tending towards lip is released from their groove, this outside the moving of projection 8 opposings of the supporting 16 on constriction 22 every sides; Arrow F3 is illustrated in the bending force in the supporting 16, and this power is tending towards causing that lip 21 shifts out (arrow F4) from their tunnel 10,11.Its lip that adds with respect to lip 21 formations of projection 8() opposing lip 21 outwards moves.

In conversion shown in Figure 4, the cross-sectional outling that the lateral lip 23 of slider 20 has a straight line to surround more accurately, is a dovetail groove shape in this embodiment.Lip 23 is arranged in the auxiliary slot 24 that supports in 25, and this groove equally has a suitable gradient with lip 23, and slideway 6 as shown in Figure 3 is such.Therefore, in order to hold cylindrical rod 17, slider 20 has the groove 27 of a cylindrical axial notch 26 and an assist formation to be arranged in the supporting 25 to be used in the bottom portion of groove of slider 20.

In the device shown in Fig. 5 to 7, the present invention be applied to one in the synthetic bar 28 of a spinal bone and formation to the connection between the anchoring piece 29 of 28 supporting, bar 28 has a smooth surface or the Cotrel type is arranged or annular knurl type rough surface.In the illustrated embodiment, part 29 is bearing post bolts, and it has a thread helix part 31 and a U type part 32, and it limits a passage 33 between two branches 34.Bolt 29 and bar 28 assemble by a sliding fortune part 35, slider 35 has one to be the section of U-shaped substantially, its two parallel lateral plates 36 have flexible so that form an elastic clip or clip sheet 36 is terminated at lip 37, lip 37 is circular, one towards another bending, and it also has the end 39 of a basic expansion for annular section.Two lips 37 with the axially earth tilt (Fig. 7) at an angle alpha of bar 28.

Between the branch 34 of head 32, form the seat 41 of the supporting cylindrical bar 28 of a part-circular.Seat 41 is separated from branch 34 by the slit 42 that tunnel 43 extends, tunnel 43 parts and lip 37 match so that hold the latter, when bar 28 during against Cuo 41 supporting, the slideway that tunnel 43,44 limits has the inclination (Fig. 7) that becomes the α angle with the axis with bar 28 of lip 37 the same manners.

It can be had a supporting post hook of U-shaped body 32 to substitute in a conversion in order to obtain screw rod 29() and bar 28 between connection, the latter is placed on the seat 41, the sheet 36 elastic stretch engage angled slideways 43 that clamping element 35 slides and separates up to its present 41 every sides along bar 28.Clamping element 35 slides up at the end that moves along bar, and its lip 37 is clamped against the slideway that they are full of separately fully.

Can find out that from assembly shown in Figure 6 go up the central module 45 of the bending that connects that constitutes a bridge owing to be used in bar 28 surfaces between sheet 36, the thickness of connection does not almost increase with respect to the height of branch 34.

Slider 35 during by a kind of soft work non-sclerous made be useful, slider and coarse bar 28(for example are made of the diamond form point) match, so bar bears an irreversible substantially clamping action.The lip of slider 35 can be with shown in be identical like that, or different.

Claims (9)

1, connects a long elements to connection set to its supporting member, comprise: one can be with described long elements coaxial and slide in intimate contact and insert the slider of described supporting, slider clamps the slideway that is arranged in the described supporting, slider comprises and cooperative two lateral lips of described slider clamping slideway, described lateral lip and the slideway that is associated tilt with respect to the axle of described long elements, and obtain the clamping certainly of each lip of the described slider in the slideway separately in described supporting at this.

2, device as claimed in claim 1, the tunnel of the lateral lip transverse bending of described slider wherein and the described tilted slideway of formation in described supporting aids in described lateral lip and holds described lateral lip.

3, device as claimed in claim 1, the lateral lip of wherein said slideway have the dove-tail shape of cross section and are placed in the auxiliary slot that forms described tilted slideway in the supporting.

4, have an appointment 2 ° to 6 ° gradient of device as claimed in claim 1, wherein said slideway and lip.

5, device as claimed in claim 1, wherein said long elements are that cylindrical bar and a half-cylindrical between centers groove that is used for described bar are arranged on the side of described chute surface towards bar, and described semi-cylindrical recesses has a radius that equates with the radius of bar.

6, the described lip that device as claimed in claim 1, the side surface of described slider wherein comprise is a curve.

7, device as claimed in claim 6, each lip of wherein said slider comprises one first constriction that is positioned at the throat that is defined by two on described slider relative circular projections, with the circular portion of one second expansion, described two-part of lip are contained in the tunnel that is arranged on appropriate section in the supporting.

8, device as claimed in claim 7, each first portion of wherein said lip is connected to an outer surface of described slider by a circular lateral process, this projection is inserted in the interior auxiliary flute of described supporting, and described inserting member is resisted the horizontal extraction of described slider.

9, device as claimed in claim 1, wherein said long elements is the synthetic cylindrical bar of spinal bone, described supporting is the bolt that the U-shaped head of two branches is arranged, a semi-circular seat that is used to support described bar is arranged between two branches, slit and the tunnel that extends along the slit separate seat from two branches, described device also comprises a slider that is formed by the clip that two spring sheets are arranged, spring sheet has the end that aids in slit and tunnel that is made of rounded lip and inserts described slit and tunnel and around described seat by the slip on described bar, described tunnel and lip with respect to the axis tilt of bar so that slide into terminal position clamp lever and clip at clip.

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