CN208942270U - Rocker-arm reciprocating transmission mechanism and reciprocating saw - Google Patents

Abstract

The utility model discloses a kind of rocker-arm reciprocating transmission mechanism and reciprocating saws, wherein rocker-arm reciprocating transmission mechanism includes body, it is set to the intracorporal reciprocal axis of machine and the reciprocal axis driving assembly for driving reciprocal axis to move axially in reciprocal fashion, the reciprocal axis driving assembly includes that rocking-turn is set to the rocker arm of body and the power input shaft for driving rocker arm rocking-turn, the rocker arm front end is provided with drive shaft perpendicular to rocking-turn plane, the rear end of the reciprocal axis forms the axle sleeve for being coated at drive shaft, axle sleeve is driven to move axially in reciprocal fashion by rocker arm when the power input shaft circumferentially rotates, the space for drive shaft revolution is reserved in the axle sleeve, drive mechanism can be simplified, reduce volume, easy to process and transmission stability is good, long service life.

Description

Rocker-arm reciprocating transmission mechanism and reciprocating saw

Technical field

The utility model relates to a kind of reciprocating transmission mechanism and surgical instruments, and in particular to a kind of rocker-arm reciprocal transmission Mechanism and reciprocating saw.

Background technique

Orthopaedics reciprocating saw is the relatively conventional Surigical tool of orthopaedics, is completed by orthopaedics saw equipment (handle)；It is existing In technology, transmission mechanism need to be generally arranged in the equipment of the operation, and rotational motion is switched to move back and forth；The transmission mechanism generally wraps Reciprocal axis and driving assembly are included, reciprocal axis is set in body and is stretched out by front end；Driving assembly includes power input shaft and sets It is placed in the bevel gear set of power input shaft front end and is set to the crankshaft of bevel gear set driven wheel of differential, reciprocal shaft rear end transmission is matched The kidney-shaped axle sleeve for being equipped with and being coated at crankshaft is closed, drives kidney-shaped axle sleeve to realize front-rear reciprocation movement by driving crank rotation； Existing reciprocating transmission mechanism realizes transmission due to being provided with bevel gear set and crankshaft, so that structure is complicated, body for reciprocating transmission mechanism The larger, processing difficulties of product and higher cost, meanwhile, transmission mechanism is easy to wear, and stability is poor, service life.

Utility model content

In view of this, providing rocker-arm reciprocal transmission machine the purpose of the utility model is to overcome defect in the prior art Structure and reciprocating saw can simplify drive mechanism, good, the long service life that reduces volume, easy to process and transmission stability.

The rocker-arm reciprocating transmission mechanism of the utility model, including body, be set to the intracorporal reciprocal axis of machine and be used for The reciprocal axis driving assembly that reciprocal axis moves axially in reciprocal fashion is driven, the reciprocal axis driving assembly includes that rocking-turn is set to body Rocker arm and power input shaft for driving rocker arm rocking-turn, the rocker arm front end rocking-turn plane is provided with drive shaft, The rear end of the reciprocal axis forms the axle sleeve for being coated at drive shaft, passes through rocker arm band moving axis when the power input shaft circumferentially rotates Set moves axially in reciprocal fashion.

Further, the front end of the power input shaft is provided with the driving wheel for being circumferentially driven cooperation, the driving wheel Front end face part is recessed forms eccentric grove backward, in the rear end insertion eccentric grove of the rocker arm, when the power input shaft rotates Drive rocker arm rocking-turn.

Further, the eccentric grove is that circular trough and circular trough are provided centrally with intermediolateral column, and the rear end of the rocker arm is embedding Enter between intermediolateral column and eccentric grove inner sidewall and realizes driving cooperation.

Further, the rear end thereof housing of the rocker arm is provided with turning set, and the turning set and eccentric grove driving cooperate.

Further, the lateral surface of the turning set is spherical surface.

Further, rolling bearing is provided between the rear end and turning set of the rocker arm；It is arranged outside the drive shaft turns It is equipped with driving idler wheel.

Further, the axle sleeve is kidney-shaped set, and axle sleeve and reciprocal axis, which are integrally formed, to be fixed.

Further, the front end of the rocker arm forms the escape groove for avoiding axle sleeve, and the both ends of the drive shaft are propped up respectively Support is installed on two inner sidewalls of escape groove.

Further, the rocker arm is chevron, and the angle of the chevron is 160 ° -170 °.

The invention also discloses a kind of reciprocating saw, the reciprocating saw is provided with past for driving cutter to move back and forth Multiple transmission mechanism, the reciprocating transmission mechanism are above-mentioned rocker-arm reciprocating transmission mechanism.

The beneficial effects of the utility model are: a kind of rocker-arm reciprocating transmission mechanism disclosed by the utility model and reciprocal Saw is swung by driving rocker arm and drives the reciprocating motion of reciprocal axis by axle sleeve, can simplify drive mechanism, reduction volume, Easy to process and transmission stability is good, long service life.

Detailed description of the invention

The utility model is further described with reference to the accompanying drawings and examples:

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram of reciprocal axis in the utility model；

Fig. 3 is the structural schematic diagram of driving wheel in the utility model；

Fig. 4 is the structural schematic diagram of rocker arm in the utility model；

Each component serial numbers:

1, body；2, reciprocal axis；3, rocker arm；4, power input shaft；5, drive shaft；6, axle sleeve；7, driving wheel；8, eccentric Slot；9, intermediolateral column；10, idler wheel is driven；11, escape groove；12, turning set.

Specific embodiment

Fig. 1 is the structural schematic diagram of the utility model, and Fig. 2 is the structural schematic diagram of reciprocal axis in the utility model, and Fig. 3 is The structural schematic diagram of driving wheel in the utility model, Fig. 4 are the structural schematic diagram of rocker arm in the utility model, as shown, this Rocker-arm reciprocating transmission mechanism in embodiment, including body 1, the reciprocal axis 2 being set in body 1 and for driving back and forth The reciprocal axis driving assembly that axis 2 moves axially in reciprocal fashion, the reciprocal axis driving assembly include the rocker arm that rocking-turn is set to body 1 3 and the power input shaft 4 for driving 3 rocking-turn of rocker arm, 3 front end of rocker arm rocking-turn plane is provided with drive shaft 5, institute The rear end for stating reciprocal axis 2 forms the axle sleeve 6 for being coated at drive shaft 5, passes through 3 band of rocker arm when the power input shaft 4 circumferentially rotates Moving axis set 6 moves axially in reciprocal fashion；The driving structure of the power input shaft 4 and rocker arm rear end can be used in the prior art can be real All structures of existing the utility model aim；Optionally, the shaft of axle sleeve 6 can move back and forth in the axial direction, correspondingly, the axle sleeve The space turned round for drive shaft 5 is reserved in 6.

It drives reciprocal axis 2 to move back and forth by axle sleeve 6 in conclusion swinging by driving rocker arm 3, biography can be simplified Dynamic structure, reduction volume, easy to process and transmission stability are good, long service life.

In the present embodiment, the front end of the power input shaft 4 is provided with the driving wheel 7 for being circumferentially driven cooperation, the drive The front end face part of driving wheel 7 is recessed backward forms eccentric grove 8, and in the rear end insertion eccentric grove 8 of the rocker arm 3, the power is defeated Enter when axis 4 rotates and drives 3 rocking-turn of rocker arm；The rear end rocking-turn of rocker arm 3 is driven by eccentric grove 8, structure is simple, and drive efficiency is high.

In the present embodiment, the rear end thereof housing of the rocker arm 3 is provided with turning set 12, the turning set 12 and eccentric grove 8 driving cooperations；The lateral surface of the turning set 12 is spherical surface；Rolling is provided between the rear end and turning set 12 of the rocker arm 3 Bearing；The eccentric grove 8 is that circular trough and circular trough are provided centrally with intermediolateral column 9, and the rear end of the rocker arm 3 is embedded in intermediolateral column Between 9 and 8 inner sidewall of eccentric grove and realize driving cooperation；Frictional resistance is small, is conducive to drive smooth, reduction fever, raising transmission Efficiency；5 rotating jacket of drive shaft is provided with driving idler wheel 10；Reduce driving resistance, card is avoided to relate to.

In the present embodiment, the axle sleeve 6 is that kidney-shaped covers and axle sleeve 6 and reciprocal axis 2 are integrally formed and fix.

In the present embodiment, the front end of the rocker arm 3 forms the escape groove 11 for avoiding axle sleeve 6, and the two of the drive shaft 5 End supports two inner sidewalls for being installed on escape groove 11 respectively；Easy for installation, drive shaft 5 is fixed and driving force is stablized.

In the present embodiment, the rocker arm 3 is chevron, and the angle of the chevron is 160 ° -170 °, preferably 165 °；Guarantee Driving wheel 7 is good to the driving effect of rocker arm 3, compact-sized, and driving is smooth, avoids engaging.

The present embodiment also discloses a kind of reciprocating saw, and the reciprocating saw is provided with reciprocal for driving cutter to move back and forth Transmission mechanism, the reciprocating transmission mechanism are above-mentioned rocker-arm reciprocating transmission mechanism；Structure is simple, easy to process, and performance is steady It is fixed.

Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model It encloses, should all cover in the scope of the claims of the utility model.

Claims (10)

1. a kind of rocker-arm reciprocating transmission mechanism, including body, it is set to the intracorporal reciprocal axis of machine and for driving reciprocal axis The reciprocal axis driving assembly moved axially in reciprocal fashion, it is characterised in that:

The reciprocal axis driving assembly includes that rocking-turn is set to the rocker arm of body and the power input shaft for driving rocker arm rocking-turn, The rocker arm front end is provided with drive shaft perpendicular to rocking-turn plane, and the rear end of the reciprocal axis forms the axis for being coated at drive shaft Set drives axle sleeve to move axially in reciprocal fashion when the power input shaft circumferentially rotates by rocker arm.

2. rocker-arm reciprocating transmission mechanism according to claim 1, it is characterised in that: the front end of the power input shaft is set It is equipped with the driving wheel for being circumferentially driven cooperation, the front end face part of the driving wheel is recessed backward forms eccentric grove, the rocker arm Rear end insertion eccentric grove in, the power input shaft rotate when drive rocker arm rocking-turn.

3. rocker-arm reciprocating transmission mechanism according to claim 2, it is characterised in that: the eccentric grove is circular trough and circle Shape slot is provided centrally with intermediolateral column, between the rear end insertion intermediolateral column and eccentric grove inner sidewall of the rocker arm and realizes that driving is matched It closes.

4. rocker-arm reciprocating transmission mechanism according to claim 2, it is characterised in that: the rear end thereof housing of the rocker arm It is provided with turning set, the turning set and eccentric grove driving cooperate.

5. rocker-arm reciprocating transmission mechanism according to claim 4, it is characterised in that: the lateral surface of the turning set is ball Face.

6. rocker-arm reciprocating transmission mechanism according to claim 4, it is characterised in that: the rear end of the rocker arm and turning set Between be provided with rolling bearing；The drive shaft turns housing is provided with driving idler wheel.

7. rocker-arm reciprocating transmission mechanism according to claim 1, it is characterised in that: the axle sleeve is kidney-shaped set, axle sleeve It is integrally formed and fixes with reciprocal axis.

8. rocker-arm reciprocating transmission mechanism according to claim 1, it is characterised in that: the front end of the rocker arm forms and is used for The escape groove of axle sleeve is avoided, the both ends of the drive shaft support two inner sidewalls for being installed on escape groove respectively.

9. rocker-arm reciprocating transmission mechanism according to claim 8, it is characterised in that: the rocker arm is chevron, the V-arrangement The angle of arm is 160 ° -170 °.

10. a kind of reciprocating saw, the reciprocating saw is provided with the reciprocating transmission mechanism for driving cutter to move back and forth, and feature exists In: the reciprocating transmission mechanism is the described in any item rocker-arm reciprocating transmission mechanisms of claim 1-9.