CN104887287B - A kind of medical operation electric drill - Google Patents

Abstract

The present invention relates to field of medical device, more particularly to a kind of medical operation electric drill that can be easy to dismount drill bit, including body, output shaft and drill bit are bored, also including chuck, drill bit is removably mounted in chuck；Driving member, the two ends of driving member are connected and can rotate jointly with output shaft and chuck respectively；Adjusting set, adjusting set is socketed in driving member periphery and can be relatively rotated with driving member, and adjusting set leading flank is formed with helical guideway, helical guideway center and drill bit axis coinciding；Several are located at the clamping jaw in chuck, and clamping jaw is distributed in drills outer circumference around drill axis rotation, and chuck can drive the clamping jaw to rotate, and clamping jaw rear side is provided with transmission body, and transmission body is engaged on helical guideway, and clamping jaw can be moved radially on helical guideway；Tapered end part, tapered end part be located at brill with and correspondence adjusting set rear side, tapered end part can towards adjusting set direction movement and with the mutual interlocking of adjusting set.A kind of medical operation electric drill of the present invention can more conveniently dismount drill bit.

Description

A kind of medical operation electric drill

Technical field

The present invention relates to field of medical device, more particularly to a kind of medical operation electric drill that can be easy to dismount drill bit.

Background technology

In the prior art, medical operation electric drill is very similar with common electric drill, especially shows as both mode of operation bases This is identical, as shown in figure 1, existing medical operation electric drill is as common electric drill, including bore body, the control circuit bored in body, The chuck component and the clamping jaw that is movably arranged in chuck component of handle, output shaft and output shaft drive connection, clamping jaw can be with Drill bit is installed, user can arbitrarily change required surgical drill on chuck component, in use, as long as starting Starting switch with brill, controls power on circuitry, and output shaft can just drive the drill bit assembly to rotate.However, conventional folder Head assembly generally comprises two kinds of spanner drill chuck and hand fastening drill clutch, and the structure of two kinds of drill bits is although different, but it is torn open The principle for unloading drill bit is basically identical, and by taking spanner drill chuck as an example, its chuck component includes chuck and adjusting set, and chuck is rotationally The front side of adjusting set is connected to, three clamping jaws are provided with adjusting set, when in use, as long as general by controlling chuck and adjusting set Relatively rotate（I.e. opposite direction is rotated）, three clamping jaws can be realized as it is radially movable, to control three clamping jaws in chuck Grasping part size, such as when adjusting set is rotated forward, three clamping jaws will mutually be drawn close automatically, to clamp the drill bit of centre, When adjusting set is inverted, three clamping jaws will be separated from each other automatically, so as to split out centre drill bit, in order that adjusting set and folder Head is mutually rotated, and typically can set regulation tooth in the front side of adjusting set, location hole is radially opened up on chuck, and equipped with Special pulls wheel instrument, pulls wheel instrument and is provided with locating shaft and bevel gear, and it is equivalent to a key, as long as locating shaft is inserted pressing from both sides On the location hole of head, its bevel gear will be meshed with the regulation tooth on front side of adjusting set, as long as now rotate pulling wheel instrument, chuck Will mutually be rotated with adjusting set, the major advantage of this mode is that drill bit is obtained in that bigger chucking power, and why Using aforesaid way, its reason is mainly, and common electric drill typically can externally process more hard article, so that demand is higher Rotating speed and moment of torsion, the vibration of generation are also more strong, therefore it is required that clamping jaw possesses stronger chucking power.

However, it is bone of human body etc. compared with sclerous tissues that medical operation electric drill master is to be processed, the vibration that it is produced is relatively Small, the requirement to rotating speed and moment of torsion is relatively lower, and what it was more focused on is the degree easy to use when being performed the operation, but, by The drill bit for having continued to use common electric drill in existing medical electric drill dismounts mode, and medical personnel often reflect electric drill pole in more bit change For inconvenience, it is necessary to illustrate, the drill bit species of operation is more, and when an operation is carried out, drill bit is to need frequently to change , when row operation is crept into using existing electro-medical, doctor has to take more time more bit change, and every time more Bit change is required for spending larger strength, the degree of fatigue of doctor is increased, more it is essential that doctor is when being performed the operation Need to concentrate huge notice to process the key position of human body, should try one's best and avoid ectocine, and use existing During medical electric drill, would have to take sb's mind off sth, with the hands drill bit is dismounted, can again concentrate the hand of concern sufferer Art position, will so reduce surgical quality, increased the risk of operation.

The content of the invention

In view of this, the present invention discloses a kind of medical operation electric drill, and doctor can be allowed to dismount the brill on electric drill more conveniently Head.

In order to solve the above technical problems, the technical solution adopted by the present invention is：

A kind of medical operation electric drill, including bore body, output shaft and with the output shaft at drill bit on the same axis, Also include,

Chuck, the drill bit is removably mounted in the chuck；

Driving member, the two ends of the driving member are connected and can rotate jointly with the output shaft and chuck respectively；

Adjusting set, adjusting set is socketed in the driving member periphery and can be relatively rotated with the driving member, before adjusting set Side is formed with helical guideway, the axis coinciding of the center of the helical guideway and the drill bit；

Clamping jaw, clamping jaw is for several and is movably arranged in chuck, axis of described several clamping jaws around the drill bit Rotation is distributed in the periphery of drill bit, and the chuck can drive the clamping jaw to rotate in the lump, transmission is formed with rear side of the clamping jaw Body, the transmission body is engaged on the helical guideway, and each clamping jaw can be moved radially on the helical guideway, therefore When chuck drives the clamping jaw to rotate in the lump, clamping jaw just can make footpath along the helical guideway simultaneously during rotation To movement, therefore allow for the gap between each clamping jaw and can adjust；

Tapered end part, the tapered end part is movably arranged on brill and corresponds to the rear side of the adjusting set, tapered end part Can towards the adjusting set direction move and with the mutual interlocking of the adjusting set.

When needing to dismount drill bit, as long as promoting tapered end part to move and lock the adjusting set, adjusting set is just Can not rotate, then allowing electric drill to be powered makes output shaft rotation, because adjusting set can be relatively rotated with the driving member, therefore driving member Be not compromised by adjusting set is locked against rotation, thus output shaft just can drive the chuck to rotate together, chuck Also drive described each clamping jaw to rotate simultaneously, as noted previously, as adjusting set is locked, also locked equivalent to the helical guideway It is fixed, when chuck drives the clamping jaw to rotate in the lump, clamping jaw just can during rotation by the transmission body of rear side along The helical guideway is moved radially, as long as with this it is recognised that being rotated and reverse by controlling the output shaft, it is possible to control Described each clamping jaw of system moves back and forth in radial directions, so that the gap between each clamping jaw just can be adjusted, therefore with regard to energy It is enough easily to dismount drill bit on the chuck, it is easy to rapidly to allow doctor to be needed to change drill bit according to operation, without Necessity spends more times and concentrated force to go to dismount drill bit, increases dismantling device also without extra in addition.It should be noted that The clamping jaw is engaged on helical guideway by transmission body, increases the cooperation area of clamping jaw and helical guideway, so as to allow spiral Guide rail more stably limitation clamping jaw activity in radial directions, thus each clamping jaw can just have sufficiently strong clamping to drill bit Power.

After clamping jaw has clamped drill bit, as long as controlling the tapered end part away from the adjusting set, adjusting set is just solved Lock, as long as now restarting the output shaft rotation, output shaft just can drive the chuck, clamping jaw and drill bit to turn in the lump It is dynamic, because clamping jaw is engaged on the helical guideway by transmission body, as long as therefore preset transmission body and helical guideway it Between snap-in force（It can be appreciated that pretightning force）, just the adjusting set can be simultaneously driven in the lump during clamping jaw is rotated Rotate, therefore the electric drill of this programme just can normally be processed operation as the electric drill of prior art.

Therefore, a kind of medical operation electric drill of the invention can allow doctor to dismount the drill bit on electric drill more conveniently.

Further, several are formed with the chuck and are respectively intended to cooperate with the mounting groove for installing each clamping jaw, it is described Clamping jaw be only capable of making in mounting groove it is described move radially, the driving member includes power transmission shaft and bearing, described power transmission shaft one end and Output shaft drive connection, the other end is connected through the adjusting set and with the chuck, the outer ring of the bearing immediately in The adjusting set is interior, the inner ring of the bearing is socketed in the power transmission shaft periphery.

Further, the power transmission shaft front end is fixedly connected on the collet front, and the power transmission shaft is in each folder of correspondence Clearance position is offered on the position of pawl respectively, the clearance position coordinates the correspondence clamping jaw, so that clamping jaw can unhinderedly be made It is described to move radially.

Further, also including manipulation part, manipulation part is articulated in the brill and is located at the rear of the tapered end part, Manipulate part rotating can be respectively from the tapered end part the tapered end of pushes up and down part moved towards the adjusting set, it is described Torsion spring is arranged with the drive-connecting shaft for manipulating part, so that manipulation part can automatically reset and can buffer the effect from the chuck component Power.

Further, the rear of the manipulation part is provided with the first reset switch and the second reset switch, and described first resets Switch and the second reset switch at a distance and be respectively positioned on it is described manipulation part scope of activities in, it is described brill body in set control Circuit processed, first reset switch and the second reset switch are electrically connected with the control circuit, and can be controlled respectively The output shaft is rotated and reverse.

Further, the control circuit includes prograde circuit and circuit for reversing, on the prograde circuit and circuit for reversing The second rheostat and the first rheostat are respectively equipped with, each rheostatic activity adjustment part is respectively positioned on rheostat in an initial condition Resistance coil scope outside so that each circuit be in off-position, first reset switch and the second reset switch can divide First rheostat and the second rheostatic activity adjustment part is not driven to be slid on resistance coil, with anti-by regulation respectively The speed reversal of output shaft described in the resistance value adjusting of shifting circuit and prograde circuit and positive rotary speed.

Further, the prograde circuit is provided with starting switch and the second relay, and the circuit for reversing is provided with One relay, second relay normally closed interlock switch be arranged on the circuit for reversing, first relay it is normal Switch contacts are closed to be arranged on the prograde circuit.

Further, the trigger member extended towards the brill body lower section is also associated with the manipulation part, by described in switching Trigger member can control the rotation of the manipulation part, be provided with the brill towards the handle for boring the extension of body lower section, the starting switch It is arranged on the front side of handle, in the front of the starting switch, the trigger member and manipulation part are towards described for the trigger member correspondence Handle can simultaneously trigger the starting switch and the second reset switch when rotating, described to pull to control the rotating forward of the output shaft Parts can control the manipulation part to trigger first reset switch and to control when being rotated away from the starting switch direction State the reversion of output shaft.

Further, the described first rheostatic maximum resistance is more than the second rheostatic maximum resistance.

Further, also including spring, the spring is set in the output shaft periphery, one end of the spring immediately institute State tapered end part rear side, the other end immediately brill body.

Further, some regulation teeth, axis of the regulation tooth around the adjusting set are formed with the adjusting set Line rotation is distributed in the front side of adjusting set, and location hole is formed with the chuck, and the location hole is located at the regulation tooth Front and radially extending along chuck.

Further, also including the first magnet, the second magnet and resetting means, first magnet is arranged on the lock On head part and on rear side of the correspondence adjusting set, second magnet is connected across between the chuck and adjusting set and jam institute The relative rotation of chuck and adjusting set is stated, the resetting means is arranged on the chuck and orders about second magnet and rests on On the position that jam chuck and adjusting set are relatively rotated, first magnet can move close to described the with the tapered end part Two magnets simultaneously can order about second magnet and overcome the driving force of resetting means and leave the adjusting set, to recover chuck and tune Save the relative rotation of set.

Further, control circuit is set in the brill body, the control circuit includes prograde circuit and circuit for reversing, described The second rheostat and the first rheostat are respectively equipped with prograde circuit and circuit for reversing, each rheostatic armature contact is initial It is respectively positioned under state outside rheostatic resistance coil scope, so that each circuit is in off-position, the is provided with the brill body One reset switch and the second reset switch, first reset switch and the second reset switch can respectively drive first variable resistance Device and the second rheostatic armature contact slide on resistance coil, with respectively by adjusting the electricity of circuit for reversing and prograde circuit Resistance adjusts the speed reversal and positive rotary speed of the output shaft, and the rear of the manipulation part is connected with control-rod, described first Reset switch and the second reset switch are mutually corresponded to and at a distance, the control-rod can be with the positive and negative of the manipulation part Turn forward and backward movement respectively, the control-rod can be promoted respectively during movable triggering second reset switch and First reset switch, the prograde circuit is provided with starting switch and the second relay, the circuit for reversing be provided with first after Electrical equipment, the normally closed interlock switch of second relay is arranged on the circuit for reversing, and the normally closed of first relay is touched Head switch is arranged on the prograde circuit.

The beneficial effects of the invention are as follows：

The present invention can be rotated by controlling tapered end part to lock the adjusting set with chuck, make the spiral of adjusting set leading flank Guide rail is fixed, and under the drive of the output shaft, the chuck can drive described each clamping jaw to rotate in the lump, due to each folder Pawl is engaged on the helical guideway by transmission body respectively, and in the case where helical guideway has been fixed, each clamping jaw is turning Can just be moved radially simultaneously during dynamic, by rotating and reverse for output shaft, each described clamping jaw can just be able to It is separated from each other and mutually draws close, is also equivalent to that drill bit can be dismounted, therefore, the mode of operation of this programme dismounting drill bit is simply fast Speed, without spending more times and concentrated force to go to dismount drill bit, increases dismantling device also without extra in addition, solves medical The technical problem of surgical electric drill drill bit dismounting inconvenience in operation.

Brief description of the drawings

The product schematic diagram of Fig. 1 prior arts.

Fig. 2 is a kind of overall structure diagram of medical operation electric drill of the invention.

Fig. 3 is a kind of partial sectional view of medical operation electric drill of the invention.

Fig. 4 is a kind of partial sectional view of medical operation electric drill of the invention.

Fig. 5 is a kind of internal structure schematic diagram of medical operation electric drill of the invention.

Fig. 6 is a kind of partial structural diagram of medical operation electric drill of the invention.

Fig. 7 is a kind of partial exploded view of medical operation electric drill of the invention.

Fig. 8 is a kind of partial schematic diagram of medical operation electric drill of the invention.

Fig. 9 is a kind of partial exploded view of medical operation electric drill of the invention.

Figure 10 is a kind of overall structure diagram of medical operation electric drill of the invention.

Figure 11 is a kind of operation chart of medical operation electric drill of the invention.

Figure 12 is a kind of operation chart of medical operation electric drill of the invention.

Figure 13 is a kind of overall structure diagram of medical operation electric drill of the invention.

Figure 14 is a kind of overall structure diagram of medical operation electric drill of the invention.

Figure 15 is a kind of electrical block diagram of medical operation electric drill of the invention.

Figure 16 is a kind of electrical block diagram of medical operation electric drill of the invention.

Figure 17 is a kind of overall structure diagram of medical operation electric drill of the invention.

Figure 18 is a kind of partial schematic diagram of medical operation electric drill of the invention.

Figure 19 is a kind of partial schematic diagram of medical operation electric drill of the invention.

Figure 20 is the control structure schematic diagram of embodiment two.

Specific embodiment

With reference to specific embodiment, the present invention is further illustrated.Wherein, being for illustration only property of accompanying drawing explanation, What is represented is only schematic diagram, rather than pictorial diagram, it is impossible to be interpreted as the limitation to this patent；In order to reality of the invention is better described Apply example, accompanying drawing some parts have omission, zoom in or out, and do not represent the size of actual product；To those skilled in the art For, some known features and its explanation may be omitted and will be understood by accompanying drawing.

Embodiment one

As shown in Fig. 2 a kind of medical operation electric drill, including bore body 100, drill bit 200, chuck 300, driving member 400, regulation Set 500 and tapered end part 700, to bore and be connected with output shaft 800 on body 100（Fig. 2 is not shown）, it is movably installed with chuck 300 Clamping jaw 600（Fig. 2 is not shown）, in addition, as the electric drill of prior art, chuck 300 can be relatively rotated with adjusting set 500. Wherein, with reference to shown in Fig. 3, tapered end part 700, adjusting set 500 partly cut open after as can be seen that driving member 400 rear end with it is defeated Shaft 800 is connected, front end is fixedly connected with chuck 300, under the drive of output shaft 800, driving member 400 and chuck 300 Can rotate jointly.Drill bit 200 is removably mounted in chuck 300, thus drill bit 200 can in the lump rotate with chuck 300, with Carry out surgical work.

Specifically, with reference to shown in Fig. 4 ~ 6, clamping jaw 600 is four and is arranged in chuck 300, when drill bit 200 is arranged on folder When in first 300, each clamping jaw 600 is distributed in the periphery of drill bit 600 around the axis of drill bit 200 and rotation, and chuck 300 can drive Each clamping jaw 600 rotates and permits in chuck 300 in the lump to be stated clamping jaw 600 and moves radially, i.e. not having in the radial direction in chuck 300 Have and limitation is imposed to clamping jaw 600.In addition, it can also be seen that adjusting set 500 is socketed in the periphery of driving member 400 from Fig. 5, regulation Set 500 can be relatively rotated with driving member 400,

As shown in fig. 7, the leading flank of adjusting set 500 is formed with helical guideway 501, center and the output of helical guideway 501 The axis coinciding of axle 800, i.e. chuck 300, driving member 400, adjusting set 500, clamping jaw 600, drill bit 200 and helical guideway 501 Pivot overlap.The rear side of each clamping jaw 600 is formed with transmission body 601, and transmission body 601 is engaged on helical guideway On 501, when chuck 300 drives clamping jaw 600 to rotate in the lump, the transmission body 601 of clamping jaw 600 just can during rotation Moved radially on helical guideway 501, then due to not imposing limitation to clamping jaw 600 in radial directions inside chuck 300, because This each clamping jaw 600 can be moved radially during being rotated by chuck 300, so as to allow for each clamping jaw 600 it Between gap can adjust.

Return to shown in Fig. 2, tapered end part 700 is movably arranged on the rear side for boring on body 100 and corresponding to adjusting set 500, with tune At a distance, tapered end part Figure 12 is a kind of operation chart of medical operation electric drill of the invention to section set 500.

Further, as the further supplement to the present embodiment and perfect, as shown in Figure 10, also including manipulation part 900, Manipulation part 900 be articulated in bore body 100 on and positioned at tapered end part 700 rear, its with tapered end part 700 at a distance, With reference to shown in Figure 11 ~ 12, the rotating for manipulating part 900 can respectively from the lock head of pushes up and down 700 of tapered end part 700 Towards the movement of the direction of adjusting set 500, hence in so that operation is more convenient, in addition, being arranged with torsion spring on the drive-connecting shaft of manipulation part 900 （It is not drawn into figure）, the effect for setting up torsion spring is on the one hand to be easy to manipulation part 900 to automatically reset, on the other hand, when manipulation part 900 When compressing adjusting set 500 by tapered end part 700, manipulation part 900 can be made to buffer the reaction force from chuck 300 and shake Power, is conducive to operation by human hand comfort of the doctor when being performed the operation.

However, as shown in figure 13, for the ease of the operation by human hand of medical personnel, being also associated with downward on manipulation part 900 The trigger member 901 of extension, in operation, just can control to manipulate the rotation of part 900 by switching trigger member 901 backward.

Further, as shown in figure 14, bore on body 100 and first reset switch 910 and the second reset switch 920 be installed, First reset switch 910 and the second reset switch 920 are located at the rear of manipulation part 900, and the first reset switch 910 and second resets Switch 920 at a distance and be respectively positioned in the slewing area of manipulation part 900.In addition, with reference to shown in Figure 15, boring body 100 Control circuit is inside set, being connected on control circuit has electric drill motor and other electrical components（It is not drawn into figure）, in the present embodiment In, control circuit includes circuit for reversing 1 and prograde circuit 2 parallel with one another, and circuit for reversing 1 and prograde circuit 2 can be controlled respectively The reversion and rotating forward of output shaft 800, therefore, as long as pull manipulation part 900 rotating and reverse, can just utilize and manipulate the rear side of part 900 Top and bottom push the first reset switch 910 and the second reset switch 920 respectively so that manipulation part 900 can be by preceding Side promotes tapered end part 700 to advance, and can be controlled by rear side the first reset switch 910 of startup and the second reset switch 920 defeated Rotating and reverse for shaft 800, makes operation more convenient.Specifically, it is respectively equipped with first on circuit for reversing 1 and prograde circuit 2 The rheostat 21 of rheostat 11 and second, with reference to shown in Figure 16, by taking the first rheostat 11 as an example, it is provided with elongated resistance coil 3, The two ends of resistance coil 3 are provided with contact, and left end is fixed contact 31 and connects circuit for reversing 1, and bottom righthand side is armature contact 32 And outside the scope of resistance coil 3, so that circuit for reversing 1 is in off-position, the first reset switch in an initial condition Armature contact 32 can be driven electricity is entered during 910 are connected to armature contact 32, therefore the first reset switch 910 is moved to the left Can slide in the range of resistance coil 3 and on resistance coil 3, therefore resistance value on circuit for reversing 1 just can be by controlling First reset switch 910 is adjusted.Similarly, connected mode of second rheostat 21 on prograde circuit 2 and above-mentioned Figure 16 Shown connected mode is similar, it is therefore an objective to enable the second reset switch 920 to drive the armature contact of the second rheostat 21 to enter Can slide in the range of resistance coil and on resistance coil, so that resistance value on prograde circuit 2 can be by control the Two reset switches 920 are adjusted, this be skilled artisans appreciate that, therefore here is omitted.Return to Figure 15 institutes Show, the second relay 23 is provided with prograde circuit 2, and the normally closed interlock switch 023 of the second relay 23 is arranged on circuit for reversing 1 On, correspondingly, the first relay 12 being provided with circuit for reversing 1, the normally closed interlock switch 012 of the first relay 12 is arranged on just It is operationally safer therefore, it is possible to avoid circuit for reversing 1 and prograde circuit 2 from being powered simultaneously on shifting circuit 2.

The handle 101 for extending downward, the front side of handle 101 are provided with further in conjunction with body 100 shown in Figure 14 ~ Figure 16, is bored Starting switch 102 is installed, and the two ends contact of starting switch 102 is turned on the prograde circuit 2 shown in Figure 15, trigger member 901 correspondences are in the front of starting switch 102.When manipulation part 900 is rotated clockwise, i.e., when under trigger member 901 and manipulation part 900 When end rotates backward, the rear side of trigger member 901 can trigger starting switch 102, and manipulation part 900 also triggers the reset of startup second simultaneously 920 are switched, now prograde circuit 2 just can be powered, such that it is able to the rotating forward of controlled output axle 800, as described in front, due to just Resistance value on shifting circuit 2 can be adjusted by controlling the second reset switch 920, therefore when the rear side of control manipulation part 900 When continuing to push against the second reset switch 920, the resistance value of the second rheostat 21 is gradually reduced, and allows the resistance value of prograde circuit 2 to subtract Small, electric current increase, the final rotating speed for causing output shaft 800 is lifted, and the torsion exported equivalent to output shaft 800 can be increased, its Purpose is to allow output shaft 800 to control each clamping jaw 600 bigger to the chucking power of drill bit 200 during torsion is improved, that is, allow Each clamping jaw 600 holds tightlier, to improve the safety coefficient that electric drill is used to drill bit 200.

Similarly, when manipulation part 900 is rotated counterclockwise, i.e., when trigger member 901 and manipulation part 900 lower end rotate forward When, the rear side of control manipulation part 900 upper end can push the first reset switch 910, so as to allow circuit for reversing 1 to be powered, make output shaft 800 output reversions, therefore can just control each clamping jaw 600 to unclamp the clamping to drill bit 200, similarly, as described in front, by Can be adjusted by controlling the first reset switch 910 in the resistance value on circuit for reversing 1, therefore when control manipulation part 900 When continuing to push against the first reset switch 910, the resistance value of the first rheostat 11 is gradually reduced upper end rear side, allows circuit for reversing 1 Resistance value reduces, electric current increase, and the final reverse for causing output shaft 800 is lifted, and the torsion of its output can be increased, its mesh , when each clamping jaw 600 holds tension to drill bit 200, can be by improving the speed reversal of output shaft 800, more effectively Unclamp each clamping jaw 600 in ground.

Certainly, in actual use, can be become by selecting the first rheostat 11 and second using different maximum values Resistance device 21, allow the first rheostat 11 maximum resistance more than the second rheostat 21 maximum resistance, so as to can just allow defeated The maximum speed reversal of shaft 800 is more than maximum positive rotary speed, therefore the maximum reversion torsion of output shaft 800 will be more than maximum Torsion is rotated forward, therefore no matter output shaft 800 allows each clamping jaw 600 to clamp drill bit 200 how tight must to have when rotating forward, it is also possible to it is logical The maximum reversion torsion for crossing controlled output axle 800 orders about each clamping jaw 600 release drill bit 200.So as to can just avoid drill bit 200 Can not split out.

Further, the bottom of trigger member 901 is toward the direction depressed deformation of starting switch 102, just can so allow trigger Part 901 is more nearly starting switch 102, is conducive in the design process, when allowing trigger member 901 to trigger starting switch 102, manipulation The inside lower end of part 900 also just triggers the second reset switch 920, and it is that design work brings convenience.

Further, as the further supplement to the present embodiment and perfect, as shown in figure 17, also including spring 701, bullet Spring 701 is set in the periphery of output shaft 800, and one end of spring 701 immediately rear side of tapered end part 700, the other end is connected to brill body 100 On.Above-mentioned subplan is that tapered end 700 on the one hand can be made to automatically reset due to being additionally arranged spring 701, its advantage, Operation ease is improved, on the other hand can buffer causes from chuck 300 and adjusting set 500 because electric drill motor speed is too fast Impulsive force.

Further, as the further supplement to the present embodiment and perfect, as shown in figure 18, the front side shape of adjusting set 500 Into there is some regulation teeth 501, regulation tooth 501 is distributed in the front side of adjusting set 500, folder around the axis rotation of adjusting set 500 Location hole 301 is formed with first 300, location hole 301 is located at the front of regulation tooth 501 and the radial direction along chuck 300 is prolonged Stretch, by setting up this further scheme, electric drill can be made automatically to dismount drill bit 200, and wheel instrument can be pulled by special （It is not drawn into figure）Dismounting drill bit, upper more flexible using manually.

Further, as to the further perfect of the present embodiment, as shown in figure 19, the front side of adjusting set 500 is provided with One magnet ring 530, the rear side of chuck 300 is provided with the second magnet ring 330, and the first magnet ring 530 is mutually corresponding and mutual with the second magnet ring 530 Attract.When surgical electric drill carries out normal process, except by presetting the snap-in force between transmission body 601 and helical guideway 501 To avoid outside relative rotation of the chuck 300 with adjusting set 500, can also be by the first magnet ring 530 and the magnetic attraction of the second magnet ring 330 Further to prevent chuck 300 from being relatively rotated with adjusting set 500, so as to further prevent surgical electric drill in the process of normal process In due to the snap-in force between the transmission body 601 and helical guideway 501 of clamping jaw 600 it is not enough, and cause chuck 300 and adjusting set 500 produce relative rotation, and then cause that each clamping jaw 600 is produced and move radially, and final clamping does not live drill bit 200 and produces fly cutter Danger.

Embodiment two

The present embodiment is similar with the scheme of embodiment one, and its difference is, as shown in figure 20, after manipulation part 900 Side is connected with control-rod 990, and the first reset switch 910 and the second reset switch 920 are mutually corresponded to and at a distance, controlled Bar 990 can distinguish forward and backward movement with the forward and backward of manipulation part 900, and control-rod 990 can be pushed away respectively during movable The second reset switch 920 and the first reset switch 910 are moved and triggered, prograde circuit 2 and anti-is triggered in different structure mode respectively Shifting circuit 1 is powered, with the rotating of controlled output axle 800.The NM part of the present embodiment is identical with embodiment one, herein not Repeat again.

Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not right The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description To make other changes in different forms, there is no need and unable to be exhaustive to all of implementation method.It is all this Any modification, equivalent and improvement made within the spirit and principle of invention etc., should be included in the claims in the present invention Protection domain within.

Claims (9)

1. a kind of medical operation electric drill, including bore body, output shaft and with the output shaft at drill bit on the same axis, its It is characterised by, also includes,

Chuck, the drill bit is removably mounted in the chuck；

Driving member, the two ends of the driving member are connected and can rotate jointly with the output shaft and chuck respectively；

Adjusting set, adjusting set is socketed in the driving member periphery and can be relatively rotated with the driving member, the leading flank of adjusting set It is formed with helical guideway, the axis coinciding of the center of the helical guideway and the drill bit；

Clamping jaw, clamping jaw is for several and is movably arranged in chuck, and described several clamping jaws rotate around the axis of the drill bit The periphery of drill bit is distributed in, the chuck can drive the clamping jaw to rotate in the lump, and transmission body, institute are formed with rear side of the clamping jaw State transmission body to be engaged on the helical guideway, each clamping jaw can be moved radially on the helical guideway；

Tapered end part, the tapered end part is movably arranged on brill and corresponds to the rear side of the adjusting set, tapered end part energy court Adjusting set direction movement and with the mutual interlocking of the adjusting set；

Also include manipulation part, manipulation part is articulated in the brill and is located at the rear of the tapered end part, manipulates the positive and negative of part Turn can be respectively from the tapered end part the tapered end of pushes up and down part move towards the adjusting set, it is described manipulate part pivot joint Torsion spring is arranged with axle, so that manipulation part can automatically reset and can buffer the active force from the chuck component.

2. medical operation electric drill according to claim 1, it is characterised in that be formed with several in the chuck and use respectively In the mounting groove for coordinating each clamping jaw of installation, the clamping jaw is only capable of being moved radially described in work in mounting groove, the driving member bag Include power transmission shaft and bearing, described power transmission shaft one end is connected with the output shaft, the other end through the adjusting set and with institute Chuck connection is stated, the outer ring of the bearing is in the adjusting set, the inner ring of the bearing is socketed in outside the power transmission shaft Week.

3. medical operation electric drill according to claim 2, it is characterised in that the power transmission shaft front end is fixedly connected on described Collet front, the power transmission shaft offers clearance position respectively on the position of each clamping jaw of correspondence, and the clearance position coordinates correspondence The clamping jaw, so that clamping jaw can unhinderedly make described moving radially.

4. medical operation electric drill according to claim 3, it is characterised in that the rear of the manipulation part is provided with the first reset Switch and the second reset switch, first reset switch and the second reset switch at a distance and are respectively positioned on the behaviour In the scope of activities of control, control circuit is set in the brill body, first reset switch and the second reset switch are electrical respectively The control circuit is connected to, and can respectively control rotating and reverse for the output shaft.

5. medical operation electric drill according to claim 4, it is characterised in that the control circuit includes prograde circuit and anti- Shifting circuit, is respectively equipped with the second rheostat and the first rheostat on the prograde circuit and circuit for reversing, each rheostatic work Movable contact is respectively positioned on outside rheostatic resistance coil scope in an initial condition, so that each circuit is in off-position, it is described First reset switch and the second reset switch can respectively drive first rheostat and the second rheostatic armature contact in electricity Slid on resistance coil, with respectively by adjusting the speed reversal of output shaft described in the resistance value adjusting of circuit for reversing and prograde circuit With positive rotary speed.

6. medical operation electric drill according to claim 5, it is characterised in that the prograde circuit be provided with starting switch and Second relay, the circuit for reversing is provided with the first relay, and the normally closed interlock switch of second relay is arranged on institute State on circuit for reversing, the normally closed interlock switch of first relay is arranged on the prograde circuit.

7. medical operation electric drill according to claim 6, it is characterised in that be also associated with the manipulation part towards the brill The trigger member that body lower section extends, the rotation of the manipulation part can be controlled by trigger member described in switching, and court is provided with the brill The handle that body lower section extends is bored, the starting switch is arranged on the front side of handle, and the trigger member correspondence is in the starting switch Front, the trigger member and starting switch can be simultaneously triggered when being rotated towards the handle for manipulation part and the second reset is opened Close, to control the rotating forward of the output shaft, the trigger member can control the manipulation when being rotated away from the starting switch direction Part triggers first reset switch and the reversion to control the output shaft.

8. medical operation electric drill according to claim 1, it is characterised in that also including spring, the spring is set in institute State output shaft periphery, one end of the spring immediately tapered end part rear side, the other end connects the brill body.

9. medical operation electric drill according to claim 1, it is characterised in that control circuit, the control are set in the brill body Circuit processed includes prograde circuit and circuit for reversing, and the second rheostat and first are respectively equipped with the prograde circuit and circuit for reversing Rheostat, each rheostatic armature contact is respectively positioned on outside rheostatic resistance coil scope in an initial condition, so that each Circuit is in off-position, is provided with the first reset switch and the second reset switch in the brill body, first reset switch and Second reset switch can respectively drive first rheostat and the second rheostatic armature contact to be slid on resistance coil, with It is described respectively by adjusting the speed reversal and positive rotary speed of output shaft described in the resistance value adjusting of circuit for reversing and prograde circuit The rear for manipulating part is connected with control-rod, first reset switch and the second reset switch mutually correspond to and be separated by one section away from From the control-rod can distinguish forward and backward movement with the forward and backward of the manipulation part, and the control-rod is in movable process In can respectively promote triggering second reset switch and the first reset switch, the prograde circuit is provided with starting switch and the Two relays, the circuit for reversing is provided with the first relay, and the normally closed interlock switch of second relay is arranged on described On circuit for reversing, the normally closed interlock switch of first relay is arranged on the prograde circuit.