CN204364111U - Cable tightener - Google Patents

Abstract

The utility model discloses in medical apparatus and instruments for tightening up the cable tightener of cable, comprise cylindrical shell, trigger and handle, barrel front end is provided with the front extend neck body wearing cable passage before inside is provided with, the cable in cable passage is worn before Qian Suo cable mechanism can lock, front snap ring and rear snap ring is provided with in cylindrical shell, mandrel expansion bearing in cylindrical shell is front, in the through hole of rear snap ring, and extend to cylindrical shell outside, core back-end is provided with the rear extend neck body wearing cable passage after inside is provided with, the cable in cable passage is worn after Hou Suo cable mechanism can lock, the mandrel at front snap ring rear is set with drive plate, drive plate is hinged on trigger, cylinder back-end is provided with lock assembly, drive plate band moving mandrel and rear pressure cable assembly can be made to move backward by trigger squeeze backward.This utility model have can one-handed performance, work efficiency high, can carry out the advantage such as tightening up to the cable of different size.

Description

Cable tightener

Technical field

This utility model relates to medical instruments field, particularly relates to a kind of cable tightener to tying up cable and tightening up.

Background technology

When carrying out bone surgery, often tie up operation with the position of cable to generation bone splits, fracture, at this moment just need to use cable tightener and the cable be located in flat joint or tight locking button is tightened up.Traditional cable tightener comprises sleeve pipe, rear cover and handle, and the afterbody of sleeve pipe stretches in rear cover from the front end of rear cover, and handle stretches in rear cover from the rear end of rear cover; Sleeve pipe is connected with handle, is threaded between handle with rear cover inwall; Sleeve pipe has the lower concave part being positioned at rear cover front, lower concave part is equipped with screw rod, screw rod offers through wires hole and this screw rod is provided with clamp nut, the front end of sleeve pipe is threading opening, has the threading passage of the sleeve pipe lower concave part extanding rearward to screw rod front in sleeve pipe.During use, clamp nut through the through wires hole on threading opening, threading passage and screw rod, is then tightened by cable successively, thus is compressed by cable, then turning handle, and driving sleeve pipe to retreat by handle can tighten up cable.

There is following shortcoming in this cable tightener: one, adopts turning handle drive sleeve pipe to retreat thus tighten up the mode of cable, on the one hand, tight cable mode like this makes operator in use must bimanualness, very inconvenient, and when operator's hands is just holding other medical apparatus and instruments, the work of tight cable cannot be completed alone especially; On the other hand, the speed of tightening up cable is comparatively slow, and when needing to tighten up many cables in an operation process, considerably increase operating time, this brings huge operation risk to operator undoubtedly; Two, in some large-scale bone surgeries, often to tighten up fixing to the cable of many different sizes simultaneously, its tightening process first successively all cables is carried out pre-tightening, successively all cables are tightened up further again, so constantly repeat, until all cables reach required tighten up degree, in above-mentioned tightening process, just need and the same number of multiple cable tightener of cable, which not only improves cost, and it is pretty troublesome to operate.

Utility model content

The required technical problem solved of this utility model is: provide a kind of easy to use, one-hand operation and can reduce the cable tightener of use cost.

For solving the problem, the technical solution adopted in the utility model is: cable tightener, comprise: cylindrical shell, cylindrical shell is provided with the trigger pulled before and after handle and energy, pressure cable assembly before barrel front end is provided with, before described, pressure cable assembly comprises front extend neck body, front connect inner barrel be axially provided with can pass through for cable before wear cable passage, front extend neck body is provided with Qian Suo cable mechanism, wears in cable passage before cable being locked at by Qian Suo cable mechanism, snap ring and rear snap ring before cylindrical shell internal fixtion is provided with, and front snap ring and rear snap ring are equipped with through hole, be arranged at mandrel expansion bearing in cylindrical shell in the through hole of front snap ring, and core back-end passes the through hole of rear snap ring and extends to cylindrical shell outside, mandrel is also provided with the resilience reset assembly that mandrel resilience forward can be made to reset, core back-end is provided with rear pressure cable assembly, described rear pressure cable assembly comprises rear extend neck body, after connect inner barrel be axially provided with can pass through for cable after wear cable passage, rear extend neck body is provided with Hou Suo cable mechanism, wears in cable passage after cable being locked at by Hou Suo cable mechanism, front snap ring rear is provided with drive plate, drive plate is sleeved on mandrel, the first spring making drive plate have trend is forward provided with between drive plate and rear snap ring, drive plate stretches out cylindrical shell outside downwards, and be hinged with the connector be hinged on trigger, cylinder back-end is provided with the lock assembly for preventing the free resilience forward of mandrel and rear pressure cable assembly from resetting, pulling trigger can make drive plate band moving mandrel and rear pressure cable assembly move backward backward, after releasing trigger, under the effect of the first spring, drive plate and trigger are pushed back original position, now under the effect of lock assembly, mandrel keeps present situation, mandrel is in can only backward can not unidirectional locking state forward, when after the unidirectional locking state being removed mandrel by lock assembly, mandrel and rear pressure cable assembly return back to initial position forward under the effect of resilience reset assembly.

Further, aforesaid cable tightener, wherein: the rear end of described front extend neck body is removably plugged on the installation through hole being arranged in barrel front end, connect in the grafting through hole of barrel front end before the rear end of drawing head is removably plugged on, described drawing head inside is provided with the traction passage that can pass through for cable and traction passage rear end is communicated with the front end of front wearing cable passage, and drawing head front portion is the curve bend to curving; The front end of described rear extend neck body is removably plugged on the assembling through hole being arranged in core back-end.

Further, aforesaid cable tightener, wherein: described cylindrical shell comprises front sleeve and rear sleeve, the afterbody of front sleeve stretches in rear sleeve from the front end of rear sleeve, between front sleeve and front snap ring, be provided with second spring that front sleeve can be made to have trend forward, front sleeve outer wall be provided with stroke groove, rear sleeve is inwardly provided with screw and screw head stretches in stroke groove, under external force, front sleeve is engaged in forward and backward movement in rear sleeve by stroke groove and screw.

Further, aforesaid cable tightener, wherein: described front sleeve outer setting has some graduation marks.

Further, aforesaid cable tightener, wherein: described Qian Suo cable mechanism comprise be arranged at before connect the first breach of cylinder body bottom and be enclosed within the first U-shaped clamp of front extend neck body both sides from lower to upper, the projection of the first U-shaped clamp bottom inside stretches in the first breach, first breach and before wear cable channel connection, the first cam is had by hinge between the two side arms of the first U-shaped clamp upper end, and the first cam props up the upper surface of front extend neck body, first cam is rotated around the pin joint of itself and the first U-shaped clamp, the projection of the first U-shaped clamp bottom inside can be made to move up and down in the first breach, thus the cable clamping or wear before unclamping in cable passage.

Further, aforesaid cable tightener, wherein: described Hou Suo cable mechanism comprise be arranged at after connect the second breach of cylinder body bottom and be enclosed within the second U-shaped clamp of rear extend neck body both sides from lower to upper, the protruding block of the second U-shaped clamp bottom inside stretches in the second breach, second breach with after wear cable channel connection, the second cam is had by hinge between the two side arms of the second U-shaped clamp upper end, and the second cam props up the upper surface of rear extend neck body, second cam is rotated around the pin joint of itself and the second U-shaped clamp, the protruding block of the second U-shaped clamp bottom inside can be made to move up and down in the second breach, thus the cable clamping or wear after unclamping in cable passage.

Further, aforesaid cable tightener, wherein: described resilience reset assembly comprises and is arranged at mandrel front end and to the resilience baffle plate of direction, mandrel both sides projection, is provided with the 3rd spring making mandrel have trend forward between resilience baffle plate and front snap ring.

Further, aforesaid cable tightener, wherein: described lock assembly comprises the row's ratchet be arranged at bottom mandrel, be provided with elasticity sour jujube head cylinder back-end is hinged, the lobe resilient abutment of elasticity sour jujube crown end is bottom mandrel and engage each other with ratchet, lobe in this case on elasticity sour jujube head makes mandrel to move backward and can not move forward, mandrel is made to be in unidirectional locking state, the downside of elasticity sour jujube head stretches out and forms reset handle, down pulling reset handle can make the lobe on elasticity sour jujube head leave ratchet, thus make mandrel remove unidirectional locking state.

Further, aforesaid cable tightener, wherein: at mandrel, the outer surface of its axis direction is provided with the stopper slot of strip, cylindrical shell is inwardly provided with pin and pin head stretches in stopper slot.

The beneficial effects of the utility model are: use the mode of pulloff to strain cable, make operator only need one hand to operate in tight cable process, not only easy to operate, and work efficiency is high; In addition, the forward and backward pressure cable assembly of cable tightener is all detachable, if need in an operation process successively and progressively tighten up the cable of many different specification sizes time, only need to change forward and backward pressure cable assembly, greatly reduce use cost, and this characteristic seems particularly convenient when tightening up the cable of different size; Moreover front sleeve outside has scale display, and operator can estimate according to scale the instant pulling force to tie up cable in process and be subject to intuitively, thus judge present cable tighten up degree, guarantee cable degree of tightness appropriateness, make to tie up operation more safe and reliable; In addition, the front movable drawing head connecing barrel front end ensure that direction of pull that cable is subject to can try one's best with in tight locking button to wear cable passage parallel, what effectively prevent cable from cannot reach expection because being subject to card pressure tightens up degree.

Accompanying drawing explanation

Fig. 1 is the structural representation of cable tightener described in the utility model.

Fig. 2 is the structural representation that Fig. 1 overlooks direction.

Fig. 3 is the structural representation of D-D section in Fig. 2.

Fig. 4 is the structural representation of A-A section in Fig. 1.

Fig. 5 is the structural representation of B-B section in Fig. 1.

Fig. 6 is the structural representation of C-C section in Fig. 1.

Detailed description of the invention

Below in conjunction with accompanying drawing and preferred embodiment, technical scheme described in the utility model is described in further detail.

As Fig. 1, Fig. 2, Fig. 3, shown in Fig. 4, cable tightener, comprise cylindrical shell 111, cylindrical shell 111 is provided with the trigger 3 pulled before and after handle 4 and energy, pressure cable assembly 11 before cylindrical shell 111 front end is provided with, before described, pressure cable assembly 11 comprises front extend neck body 5, cable passage 6 is worn before being axially provided with and can passing through for cable in front extend neck body 5 inside, front extend neck body 5 is provided with Qian Suo cable mechanism 8, wear in cable passage 6 before cable being locked at by Qian Suo cable mechanism 8, in the present embodiment, described Qian Suo cable mechanism 8 comprises the first breach be arranged at bottom front extend neck body 5 and the first U-shaped clamp 9 being socketed in front extend neck body 5 both sides from lower to upper, the projection 41 of the first U-shaped clamp 9 bottom inside stretches in the first breach, first breach with front wear cable passage 6 and be communicated with, the first cam 10 is had by hinge between the two side arms of the first U-shaped clamp 9 upper end, and the first cam 10 props up the upper surface of front extend neck body 5, first cam 10 is rotated around the pin joint of itself and the first U-shaped clamp 9, the projection 41 of the first U-shaped clamp 9 bottom inside can be made to move up and down in the first breach, thus the cable clamping or wear before unclamping in cable passage 6.Snap ring 12 and rear snap ring 13 before being fixedly installed in the inner chamber of cylindrical shell 111, and front snap ring 12 and rear snap ring 13 are equipped with through hole, be arranged at mandrel 14 expansion bearing in cylindrical shell 111 in the through hole of front snap ring 12, and mandrel 14 rear end is through the through hole of rear snap ring 13, and it is outside to extend to cylindrical shell 111, mandrel 14 is also provided with the resilience reset assembly that mandrel 14 resilience forward can be made to reset, in the present embodiment, described resilience reset assembly comprises and is arranged at mandrel 14 front end, and to the resilience baffle plate 15 of direction, mandrel 14 both sides projection, the 3rd spring 16 making mandrel 14 have trend is forward provided with between resilience baffle plate 15 and front snap ring 12, described cylindrical shell 111 comprises front sleeve 1 and rear sleeve 2, the afterbody of front sleeve 1 stretches in rear sleeve 2 from the front end of rear sleeve 2, the second spring 17 making front sleeve 1 have trend is forward provided with between front sleeve 1 and front snap ring 12, as Fig. 1, shown in Fig. 5, front sleeve 1 outer wall is provided with stroke groove 20, rear sleeve 2 is inwardly provided with screw 21, and screw 21 head stretches in stroke groove 20, under external force, front sleeve 1 being engaged in before in rear sleeve 2 by stroke groove 20 and screw 21, rear movement, described front sleeve 1 outer setting has some graduation marks 22, like this, when cable be tightened up make front sleeve 1 mobile in sleeve 2 backward time, can estimate according to the displacement of the outside graduation mark 22 of front sleeve 1 pulling force that now cable is subject to, greatly facilitate the use of operator.Mandrel 14 rear end is provided with rear pressure cable assembly 23, described rear pressure cable assembly 23 comprises rear extend neck body 25, cable passage 45 is worn after being axially provided with and can passing through for cable in rear extend neck body 25 inside, rear extend neck body 25 is provided with Hou Suo cable mechanism 24, wear in cable passage 45 after cable being locked at by Hou Suo cable mechanism 24, in the present embodiment, described Hou Suo cable mechanism 24 comprises the second breach be arranged at bottom rear extend neck body 25 and the second U-shaped clamp 26 being enclosed within rear extend neck body 25 both sides from lower to upper, the protruding block 42 of the second U-shaped clamp 26 bottom inside stretches in the second breach, described second breach with after wear cable passage 45 and be communicated with, the second cam 27 is hinged with by swivel pin between the two-arm of the second U-shaped clamp 26 upper end, and the second cam 27 props up the upper surface of rear extend neck body 25, second cam 27 is rotated around the pin joint of itself and the second U-shaped clamp 26, the protruding block 42 of the second U-shaped clamp 26 bottom inside can be made to move up and down in the second breach, thus the cable clamping or wear after unclamping in cable passage 45.Front snap ring 12 rear is provided with drive plate 43, drive plate 43 is set on mandrel 14, the first spring 28 making drive plate 43 have trend is forward provided with between drive plate 43 and rear snap ring 13, it is outside that drive plate 43 stretches out rear sleeve 2 downwards, and be hinged with the connector 29 be hinged on trigger 3, rear sleeve 2 rear end is provided with the lock assembly for preventing the free resilience forward of mandrel 14 and rear pressure cable assembly 23 from resetting, in the present embodiment, described lock assembly comprises the row's ratchet 30 be arranged at bottom mandrel 14, hingedly in rear sleeve 2 rear end be provided with elasticity sour jujube 31, the lobe resilient abutment on elasticity sour jujube 31 top is bottom mandrel 14 and engage each other with ratchet 30, lobe in this case on elasticity sour jujube 31 makes mandrel 14 to move backward and can not move forward, mandrel 14 is made to be in unidirectional locking state, the downside of elasticity sour jujube 31 stretches out and forms reset handle 32, down pulling reset handle 32 can make the lobe on elasticity sour jujube 31 leave ratchet 30, thus make mandrel 14 remove unidirectional locking state.Pull trigger 3 drive plate 43 can be made to be tilted on mandrel 14, make the drive plate 43 tilted rely on frictional force band moving mandrel 14 and rear pressure cable assembly 23 to move backward backward, after releasing trigger 3, under the effect of the first spring 28, drive plate 43 and trigger 3 are pushed back original position, when down pulling after reset handle 32 makes mandrel 14 remove unidirectional locking state, mandrel 14 and rear pressure cable assembly 23 return back to initial position forward under the effect of the 3rd spring 16.In the present embodiment, the front end of cylindrical shell 111 is provided with hexagonal installation through hole, and install in through hole and be provided with jump ring, and the rear end of front extend neck body 5 is provided with the mounting head of hexagonal prism structure, by mounting head, jump ring and the mating reaction of installing through hole, the rear end of front extend neck body 5 is removably plugged on the installation through hole being arranged in cylindrical shell 111 front end; Similarly, the front end of front extend neck body 5 is provided with hexagonal grafting through hole, and be provided with jump ring in grafting through hole, and the rear end of drawing head 7 is provided with the assembly head of hexagonal prism structure, by the mating reaction of assembly head, jump ring and grafting through hole, the rear end of drawing head 7 is removably plugged in the grafting through hole of front extend neck body 5 front end, described drawing head 7 inside is provided with the traction passage 47 that can pass through for cable and traction passage 47 rear end is communicated with the front end of front wearing cable passage 6, and drawing head 7 front portion is the curve bend to curving; The front end of described rear extend neck body 25 is removably plugged on the assembling through hole being arranged in mandrel 14 rear end, like this, on the one hand front pressure cable assembly 11 and rear pressure cable assembly 23 all detachable, if when needing successively in once performing the operation and progressively tighten up the cable of many different specification sizes, only need to change front pressure cable assembly 11 and rear pressure cable assembly 23, and multiple stage cable tightener need not be equipped with, greatly reduce use cost; On the other hand drawing head 7 front portion be the curve bend to curving, goes out cable mouth in operation by what rotate that drawing head 7 makes its head aligning tight locking button, and that avoids cable cannot reach expection because the card being subject to tight locking button is pressed tightens up degree.As shown in Fig. 4, Fig. 5, Fig. 6, in the present embodiment, at mandrel 14, the outer surface of its axis direction is provided with the stopper slot 33 of strip, rear sleeve 2 is inwardly provided with pin 34 and pin 34 head stretches in stopper slot 33, like this, mandrel 14 moves forward and backward along its axis direction only, and can not rotate, and adds the stability of operation.

The using method of cable tightener described in the utility model is as follows: rotate drawing head 7 and the mouth of pipe of drawing head 7 front end curve bend is aimed at, and be resisted against tight locking button go out cable mouth place, then the cable be located in tight locking button is passed traction passage 47 successively, before wear cable passage 6 and after wear cable passage 45, rotating the second cam 27 makes protruding block 42 move up in the second breach, thus the cable worn after clamping in cable passage 45, pull trigger 3 makes mandrel 14 and rear pressure cable assembly 23 move backward backward, thus drive cable to tighten up backward, then trigger 3 is unclamped, under the effect of the first spring 28, drive plate 43 and trigger 3 are pushed back original position, in the process, the lobe resilient abutment on lock assembly Elastic sour jujube 31 top is bottom mandrel 14 and engage each other with ratchet 30, mandrel 14 is in can only move and can not the unidirectional locking state of movement forward backward, thus prevent the free resilience forward after unclamping trigger 3 of mandrel 14 and rear pressure cable assembly 23 from resetting, when cable is constantly tightened to a certain degree backward in the process repeatedly pulling trigger 3 backward, continue to pull trigger 3 backward, the counteracting force of cable to rear sleeve 2 makes front sleeve 1 by mobile in the cooperation of stroke groove 20 and screw 21 backward sleeve 2, now can estimate according to the displacement of the outside graduation mark 22 of front sleeve 1 pulling force that now cable is subject to, can think that when cable is subject to a certain size pulling force cable has reached required and tightened up degree, at this moment Press Plier just can be used to extrude tight locking button, tight locking button is made to produce deformation, thus two of cable are fastened in tight locking button, cut off unnecessary cable again, finally completely skeletogenously tie up fixing operation.In addition, in some large-scale bone surgeries, often to tighten up fixing to the cable of many different sizes simultaneously, its tightening process first successively all cables is carried out pre-tightening, successively all cables are tightened up further again, so constantly repeat, until all cables reach required tighten up degree.When utilizing cable tightener described in the utility model to operate, first with preceding method, pre-tightening is carried out to single line cable, when cable reach needed for pre-tightening tighten up degree time, rotating the first cam 10 makes projection 41 move up in the first breach, thus the cable worn before clamping in cable passage 6, then the cable worn after the second cam 27 unclamps in cable passage 45 is rotated backward, extract out from above cable being worn from afterwards in cable passage 45 again, then pressure cable assembly 11 before pulling up forward, before making, pressure cable assembly 11 leaves cylindrical shell and is shelved on tight locking button side, now then can carry out the pre-tightening work of second cable, if the specification of second cable is identical with first cable, then only need the front pressure cable assembly 11 of same size in grafting, repetition aforesaid operations can complete the pre-tightening work to second cable, if the specification of second cable is different from first cable, then first unload rear pressure cable assembly 23, then press cable assembly 11 and rear pressure cable assembly 23 can carry out tight cable operation before supporting in the size grafting of this cable, so constantly repeat, until all cables reach required tighten up degree.

The advantage of the cable tightener of said structure is: use the mode of pulloff to strain cable, make operator only need one hand to operate in tight cable process, not only easy to operate, and work efficiency is high; In addition, the forward and backward pressure cable assembly of cable tightener is all detachable, if need in an operation process successively and progressively tighten up the cable of many different specification sizes time, only need to change forward and backward pressure cable assembly, greatly reduce use cost, and this characteristic seems particularly convenient when tightening up the cable of different size; Moreover, front sleeve outside has scale display, and operator can estimate according to the displacement of graduation mark the instant pulling force to tie up cable in process and be subject to intuitively, thus judge present cable tighten up degree, guarantee cable degree of tightness appropriateness, make to tie up more convenient to operate more safe and reliable; In addition, the front movable drawing head connecing barrel front end ensure that direction of pull that cable is subject to can try one's best with in tight locking button to wear cable passage parallel, what effectively prevent cable from cannot reach expection because being subject to card pressure tightens up degree.

Claims (9)

1. cable tightener, comprise: cylindrical shell, cylindrical shell is provided with the trigger pulled before and after handle and energy, it is characterized in that: pressure cable assembly before barrel front end is provided with, before described, pressure cable assembly comprises front extend neck body, before connect inner barrel be axially provided with can pass through for cable before wear cable passage, front extend neck body is provided with Qian Suo cable mechanism, wears in cable passage before cable being locked at by Qian Suo cable mechanism, snap ring and rear snap ring before cylindrical shell internal fixtion is provided with, and front snap ring and rear snap ring are equipped with through hole, be arranged at mandrel expansion bearing in cylindrical shell in the through hole of front snap ring, and core back-end passes the through hole of rear snap ring and extends to cylindrical shell outside, mandrel is also provided with the resilience reset assembly that mandrel resilience forward can be made to reset, core back-end is provided with rear pressure cable assembly, described rear pressure cable assembly comprises rear extend neck body, after connect inner barrel be axially provided with can pass through for cable after wear cable passage, rear extend neck body is provided with Hou Suo cable mechanism, wears in cable passage after cable being locked at by Hou Suo cable mechanism, front snap ring rear is provided with drive plate, drive plate is sleeved on mandrel, the first spring making drive plate have trend is forward provided with between drive plate and rear snap ring, drive plate stretches out cylindrical shell outside downwards, and be hinged with the connector be hinged on trigger, cylinder back-end is provided with the lock assembly for preventing the free resilience forward of mandrel and rear pressure cable assembly from resetting, pulling trigger can make drive plate band moving mandrel and rear pressure cable assembly move backward backward, after releasing trigger, under the effect of the first spring, drive plate and trigger are pushed back original position, now under the effect of lock assembly, mandrel keeps present situation, mandrel is in can only backward can not unidirectional locking state forward, when after the unidirectional locking state being removed mandrel by lock assembly, mandrel and rear pressure cable assembly return back to initial position forward under the effect of resilience reset assembly.

2. cable tightener according to claim 1, it is characterized in that: the rear end of described front extend neck body is removably plugged on the installation through hole being arranged in barrel front end, connect in the grafting through hole of barrel front end before the rear end of drawing head is removably plugged on, described drawing head inside is provided with the traction passage that can pass through for cable and traction passage rear end is communicated with the front end of front wearing cable passage, and drawing head front portion is the curve bend to curving; The front end of described rear extend neck body is removably plugged on the assembling through hole being arranged in core back-end.

3. cable tightener according to claim 1, it is characterized in that: described cylindrical shell comprises front sleeve and rear sleeve, the afterbody of front sleeve stretches in rear sleeve from the front end of rear sleeve, second spring that front sleeve can be made to have trend is forward provided with between front sleeve and front snap ring, front sleeve outer wall is provided with stroke groove, rear sleeve is inwardly provided with screw and screw head stretches in stroke groove, under external force, front sleeve is engaged in forward and backward movement in rear sleeve by stroke groove and screw.

4. cable tightener according to claim 3, is characterized in that: described front sleeve outer setting has some graduation marks.

5. the cable tightener according to claim 1 or 2 or 3, it is characterized in that: described Qian Suo cable mechanism comprise be arranged at before connect the first breach of cylinder body bottom and be enclosed within the first U-shaped clamp of front extend neck body both sides from lower to upper, the projection of the first U-shaped clamp bottom inside stretches in the first breach, first breach and before wear cable channel connection, the first cam is had by hinge between the two side arms of the first U-shaped clamp upper end, and the first cam props up the upper surface of front extend neck body, first cam is rotated around the pin joint of itself and the first U-shaped clamp, the projection of the first U-shaped clamp bottom inside can be made to move up and down in the first breach, thus the cable clamping or wear before unclamping in cable passage.

6. the cable tightener according to claim 1 or 2 or 3, it is characterized in that: described Hou Suo cable mechanism comprise be arranged at after connect the second breach of cylinder body bottom and be enclosed within the second U-shaped clamp of rear extend neck body both sides from lower to upper, the protruding block of the second U-shaped clamp bottom inside stretches in the second breach, second breach with after wear cable channel connection, the second cam is had by hinge between the two side arms of the second U-shaped clamp upper end, and the second cam props up the upper surface of rear extend neck body, second cam is rotated around the pin joint of itself and the second U-shaped clamp, the protruding block of the second U-shaped clamp bottom inside can be made to move up and down in the second breach, thus the cable clamping or wear after unclamping in cable passage.

7. the cable tightener according to claim 1 or 2 or 3, it is characterized in that: described resilience reset assembly comprises and is arranged at mandrel front end and to the resilience baffle plate of direction, mandrel both sides projection, is provided with the 3rd spring making mandrel have trend forward between resilience baffle plate and front snap ring.

8. the cable tightener according to claim 1 or 2 or 3, it is characterized in that: described lock assembly comprises the row's ratchet be arranged at bottom mandrel, be provided with elasticity sour jujube head cylinder back-end is hinged, the lobe resilient abutment of elasticity sour jujube crown end is bottom mandrel and engage each other with ratchet, lobe in this case on elasticity sour jujube head makes mandrel to move backward and can not move forward, mandrel is made to be in unidirectional locking state, the downside of elasticity sour jujube head stretches out and forms reset handle, down pulling reset handle can make the lobe on elasticity sour jujube head leave ratchet, thus make mandrel remove unidirectional locking state.

9. the cable tightener according to claim 1 or 2 or 3, is characterized in that: at mandrel, the outer surface of its axis direction is provided with the stopper slot of strip, cylindrical shell is inwardly provided with pin and pin head stretches in stopper slot.