CN209629790U - A kind of shift unit - Google Patents

Abstract

The utility model discloses a kind of shift units, comprising: shift unit connector is placed on pole；Shift unit connector includes circle nested structure and retaining ring；Retaining ring is provided in the middle part of the lateral surface of circle nested structure；Conical surface notch is arranged in the inner wall of one end of circle nested structure；Elastic clamping is located on pole；Elastic bail wire includes sleeve, annular back-off part and lug boss；The lateral surface by opening of one end of sleeve is provided with annular back-off part, and it is trapezoidal lug boss that the lateral surface of the other end of sleeve, which is provided with section,；Lug boss towards shift unit connector application of a surface in conical surface notch；One end backwards to shift unit connector of pole clamping nut is provided with annular collar, and annular back-off part inlay card is in the inner edge of annular collar；Displacement nut is tightened against round nested structure.The moving range of the shift unit of the utility model is increased, and the axial movement distance of travelling nut is controlled by the rotating cycle of displacement nut.

Description

A kind of shift unit

Technical field

The utility model relates to the technical field of Ilizarov exterior fixing rack, in particular to the technology of a kind of shift unit is led Domain.

Background technique

(Russian orthopedist Yi Lizha love has developed multipurpose 40~fifties of 19th century to existing Ilizarov Annular exter-nal fixer) ring component 2 ' in exterior fixing rack makees along smooth rod unit 4 ' relative to another ring component 2 ' when being moved, and needs to unclamp the lock 3 ' of a ring component, and supportted two with the 1 ' both ends of dilator outside a bracket Between a ring component 2 ', locked after ring component 2 ' reaches required moving distance, then by lock 3 '.In this process, The rod unit 4 ' of two 2 ' Smooths of ring component nearby often lacks the position at placement 1 ' both ends of dilator, at this moment needs to strut 1 ' both ends of device are supportted on from the smooth farther away ring component 2 ' of rod unit 4 ', and the support force of this dilator 1 ' can make ring component 2 ' Deformation is generated between rod unit 2 ', this not only reduces distracted efficiency, and easily cause lock 3 ' and rod unit 2 ' etc. Structural failure failure, while the moving resistance of ring component 2 ' can also increased.Additionally, due to being loaded with sizable resistance on bracket Power, therefore need someone that 1 ' both ends of dilator are secured firmly on two ring components 2 ' when operation, another person strut prolonging It stretches, someone is also wanted to be determined whether to have reached the moving distance needed with ruler.This move mode is not only time-consuming and laborious, low efficiency Under, but also can have biggish displacement error；Therefore a kind of shift unit is now designed.

In addition, another existing shift unit is generally required and is consolidated by nut；Fixed form as one side Additional nut is needed, increases processing cost, and the stability of its structure is not good enough；On the other hand, since nut occupies The moving distance of travelling nut, so that the moving range of displacement nut becomes smaller.Therefore a kind of shift unit is now designed.

Utility model content

In view of the above deficiencies, the purpose of the utility model is to provide a kind of shift units, enable to the mobile model of travelling nut Increase is enclosed, and facilitates fixation of the shift unit connector to pole.

In order to achieve the above object, the utility model uses following technical scheme:

A kind of shift unit, wherein include:

Shift unit connector, the shift unit connector are placed on pole；The shift unit connector includes being equipped with externally threaded circle Nested structure and retaining ring；The retaining ring is provided in the middle part of the lateral surface of the round nested structure；One end of the round nested structure it is interior Conical surface notch is arranged in wall；

One end of elastic bail wire, the elasticity bail wire is set in the shift unit connector, and the elastic card Tightly it is located on the pole；The elasticity bail wire includes sleeve, annular back-off part and lug boss；One end of the sleeve The lateral surface of opening is provided with annular back-off part, the lateral surface of the other end of the sleeve is provided with section as ladder The lug boss of shape；The lug boss towards the shift unit connector application of a surface in the conical surface notch；

Pole clamping nut, the pole clamping nut hoop is in the elastic bail wire and the shift unit connector；It is described One end backwards to the shift unit connector of pole clamping nut is provided with annular collar, and the inner wall of the annular collar fits in Curved surface of the lug boss backwards to the shift unit connector；The annular back-off part inlay card is in the inner edge of the annular collar

Nut is shifted, the displacement nut is tightened against the round nested structure, and the displacement nut is set to the circle Nested structure is backwards to one end of the elastic bail wire.

Above-mentioned a kind of shift unit, wherein a main joint-cutting, the elastic card is arranged in the side of the outer wall of the elasticity bail wire The secondary joint-cutting of other side setting one of the outer wall of tight ring；The main joint-cutting and the secondary joint-cutting by the elastic bail wire outer wall It is through to the inner wall of the elastic bail wire.

Above-mentioned a kind of shift unit, wherein the main joint-cutting is cut by one end of the elastic bail wire to the elastic card The other end of tight ring, the pair joint-cutting are cut by the one end for being equipped with annular back-off part to by the lug boss；And The main joint-cutting and the secondary joint-cutting are arranged along the axis of elastic bail wire.

Above-mentioned a kind of shift unit, wherein annular back-off part and the intersection of the sleeve form ring-shaped step knot Structure, the ring-shaped step structure inlay card is in the annular collar backwards to the inner edge of the shift unit connector.

Above-mentioned a kind of shift unit, wherein the first internal screw thread, spiral shell in described first is arranged in the inner wall of the pole clamping nut Line matches with the external screw thread.

Above-mentioned a kind of shift unit, wherein the displacement nut includes the tube-in-tube structure and endless member that section is hexagon； One end of the tube-in-tube structure connects the endless member, and the inner wall of the tube-in-tube structure is equipped with internal screw thread, the internal screw thread with The external screw thread matching；The inner wall of the endless member sets annular relief.

With above technical scheme, can reach it is following the utility model has the advantages that

The moving range of the shift unit of the utility model is increased, and is controlled and moved by the rotating cycle of displacement nut The axial movement distance of dynamic nut, so that lock be pushed to make the movement of same distance.

Detailed description of the invention

Fig. 1 is a kind of schematic diagram of Ilizarov exterior fixing rack of background technique；

Fig. 2 is a kind of schematic diagram of dilator of background technique；

Fig. 3 is a kind of explosive view of shift unit of the utility model；

Fig. 4 is a kind of half sectional view of the explosive view of shift unit of the utility model；

Fig. 5 is a kind of shift unit of the utility model and the half sectional view of pole；

Fig. 6 be the utility model a kind of shift unit and lock pole schematic diagram.

In attached drawing: 1, shift unit connector；11, circle nested structure；111, conical surface notch；112, external screw thread；12, retaining ring；2, bullet Property bail wire；21, sleeve；22, annular back-off part；23, lug boss；24, main joint-cutting；25, secondary joint-cutting；3, pole clamping spiral shell It is female；31, annular collar；31, annular collar；32, the first internal screw thread；4, nut is shifted；41, tube-in-tube structure；411, internal screw thread； 42, endless member；421, annular relief；5, pole；

Specific embodiment

The utility model is described in further detail in the following with reference to the drawings and specific embodiments, but not as the utility model It limits.

Fig. 1 is a kind of schematic diagram of Ilizarov exterior fixing rack of background technique；Fig. 2 is that one kind of background technique struts The schematic diagram of device；Fig. 3 is a kind of explosive view of shift unit of the utility model；Fig. 4 is a kind of shift unit of the utility model The half sectional view of explosive view；Fig. 5 is a kind of shift unit of the utility model and the half sectional view of pole；Fig. 6 is the utility model A kind of shift unit and lock pole schematic diagram.

It refers to shown in Fig. 3 to Fig. 6, in a kind of preferred embodiment, a kind of shift unit, comprising:

Shift unit connector 1, shift unit connector 1 are placed on pole；Shift unit connector includes the circle noose equipped with external screw thread 112 Structure 11 and retaining ring 12；Retaining ring 12 is provided in the middle part of the lateral surface of circle nested structure 11；The inner wall setting of one end of circle nested structure 11 Conical surface notch 111.

One end of elastic bail wire 2, elastic bail wire 2 is set in shift unit connector 1, and elastic bail wire 2 is placed on Pole 5；Elastic bail wire 2 includes sleeve 21, annular back-off part 22 and lug boss 23；One end of sleeve 21 by opening Lateral surface is provided with annular back-off part 22, and it is trapezoidal lug boss 23 that the lateral surface of the other end of sleeve 21, which is provided with section,； Lug boss 23 towards shift unit connector 1 application of a surface in conical surface notch 111.

Pole clamping nut 3, pole clamping nut 3 are bound round in elastic bail wire 2 and shift unit connector 1；Pole clamping nut 3 One end backwards to shift unit connector 1 be provided with annular collar 31, the inner wall of annular collar 31 fits in lug boss 23 backwards to moving The curved surface of position device connector 1；Annular back-off 22 inlay card of part is in the inner edge of annular collar 31.

Nut 4 is shifted, displacement nut 4 is tightened against round nested structure 11, and shifts nut 4 and be set to round nested structure 11 backwards One end of elastic bail wire 2.

The above is only the utility model preferred embodiments, are not intended to limit the embodiments of the present invention and protection Range.

Further, in a kind of preferred embodiment, a main joint-cutting 24, elasticity is arranged in the side of the outer wall of elastic bail wire 2 The secondary joint-cutting 25 of other side setting one of the outer wall of bail wire 2；Main joint-cutting 24 and secondary joint-cutting 25 are passed through by the outer wall of elastic bail wire 2 It wears to the inner wall of elastic bail wire 2.

Further, in a kind of preferred embodiment, main joint-cutting 24 is cut by one end of elastic bail wire 2 to elastic bail wire 2 other end, secondary joint-cutting 25 are cut by the one end for being equipped with annular back-off part 22 to by lug boss 23；And main 24 He of joint-cutting Secondary joint-cutting 25 is arranged along the axis of elastic bail wire 2.

Further, in a kind of preferred embodiment, the intersection of annular back-off part 22 and sleeve 21 forms ring-shaped step Structure 6,6 inlay card of ring-shaped step structure is in annular collar 31 backwards to the inner edge of shift unit connector 1.Specifically, when assembling, annular Back-off part 22 can be stretched out by the inner hole of pole clamping nut 3, and annular back-off part 22 is clamped in the interior of annular collar 31 Edge to limit elastic bail wire 2 and pole clamping nut 3 does not depart from, and makes elastic bail wire 2 be always positioned at correct position It sets.

Further, in a kind of preferred embodiment, the inner wall of pole clamping nut 3 is arranged the first internal screw thread 32, in first Screw thread 32 matches with external screw thread 112.

Further, in a kind of preferred embodiment, displacement nut 4 includes the tube-in-tube structure 41 and ring-type that section is hexagon Component 42；One end of tube-in-tube structure 41 connects endless member 42, and the inner wall of tube-in-tube structure 41 is equipped with internal screw thread 411, internal screw thread 411 It is matched with external screw thread 112；The inner wall of endless member 42 sets annular relief 421.Annular relief 421 plays position-limiting action, when When displacement nut 4 is constantly screwed to 1 one end of shift unit gripping sleeve, the end of threaded portion 33 can be butted on annular relief 712, so that The initial position that nut 4 is shifted in external screw thread 112 determines.

In addition to the implementation, the utility model also has following working method:

As shown in figure 3, each part is integral by the assembly of correct position.Originally, displacement nut 4 should be threaded to shift unit and connect First 2 root；Pole clamping nut 3 should be at unscrewing state, then move integrally shift unit to the ring pressure of contact lock 6 The end face of tight nut 61；Then the pole clamping nut 3 on shift unit is screwed again, so that shift unit connector 1 is locked in pole 5 On.

The ring clamp nut 61 and pole clamping nut 62 on lock 6 are unscrewed, releases lock and ring and pole all Locking.

Displacement nut 4 on turn shift unit, so that displacement nut 4 pushes lock 6 to be moved to required position, to push away Dynamic lock 6 is mobile.

The above is only the utility model preferred embodiments, are not intended to limit the embodiments of the present invention and protection Range should can appreciate that all with the utility model specification and diagramatic content institute to those skilled in the art The equivalent replacement made and obviously change obtained scheme, the protection scope of the utility model should all be included in It is interior.

Claims (6)

1. a kind of shift unit characterized by comprising

Shift unit connector, the shift unit connector are placed on pole；The shift unit connector includes being equipped with externally threaded round noose Structure and retaining ring；The retaining ring is provided in the middle part of the lateral surface of the round nested structure；The inner wall of one end of the round nested structure is set Set conical surface notch；

One end of elastic bail wire, the elasticity bail wire is set in the shift unit connector, and the elastic bail wire It is placed on the pole；The elasticity bail wire includes sleeve, annular back-off part and lug boss；One end of the sleeve by opening Lateral surface at mouthful is provided with annular back-off part, and it is trapezoidal that the lateral surface of the other end of the sleeve, which is provided with section, Lug boss；The lug boss towards the shift unit connector application of a surface in the conical surface notch；

Pole clamping nut, the pole clamping nut hoop is in the elastic bail wire and the shift unit connector；The pole One end backwards to the shift unit connector of clamping nut is provided with annular collar, and the inner wall of the annular collar fits in described Curved surface of the lug boss backwards to the shift unit connector；The annular back-off part inlay card is in the inner edge of the annular collar

Nut is shifted, the displacement nut is tightened against the round nested structure, and the displacement nut is set to the round noose Structure is backwards to one end of the elastic bail wire.

2. a kind of shift unit according to claim 1, which is characterized in that the side setting of the outer wall of the elasticity bail wire One main joint-cutting, the secondary joint-cutting of other side setting one of the outer wall of the elasticity bail wire；The main joint-cutting and the secondary joint-cutting by The outer wall of the elasticity bail wire is through to the inner wall of the elastic bail wire.

3. a kind of shift unit according to claim 2, which is characterized in that the main joint-cutting is by the one of the elastic bail wire End is cut to the other end of the elastic bail wire, and the pair joint-cutting is cut by the one end for being equipped with annular back-off part to leaning on At the lug boss；And the main joint-cutting and the secondary joint-cutting are arranged along the axis of elastic bail wire.

4. a kind of shift unit according to claim 1, which is characterized in that the phase of the annular back-off part and the sleeve Ring-shaped step structure is formed at friendship, the ring-shaped step structure inlay card is in the annular collar in the shift unit connector Edge.

5. a kind of shift unit according to claim 1, which is characterized in that the inner wall setting first of the pole clamping nut Internal screw thread, first internal screw thread match with the external screw thread.

6. a kind of shift unit according to claim 1, which is characterized in that the displacement nut includes that section is hexagon Tube-in-tube structure and endless member；One end of the tube-in-tube structure connects the endless member, and the inner wall of the tube-in-tube structure is equipped with Internal screw thread, the internal screw thread are matched with the external screw thread；The inner wall of the endless member sets annular relief.