CN201201100Y

CN201201100Y - Electric tin-suction device

Info

Publication number: CN201201100Y
Application number: CNU2008200942328U
Authority: CN
Inventors: 万泉水
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-27
Filing date: 2008-05-27
Publication date: 2009-03-04
Anticipated expiration: 2018-05-27

Abstract

The utility model relates to an electric solder sucker, which comprises a sucking cavity one end of which is provided with a suction head. The electric solder sucker is characterized in that the sucking cavity is a sucking cylinder; the other end of the sucking cylinder opposite to the suction head is connected with a gear box; the inside of the sucking cylinder is provided with a piston rod which can perform reciprocating motion inside the sucking cylinder; one end of the piston rod close to the suction head is connected with a piston and the other end of the piston rod is connected with a rack; one end of a spring is connected to the gear box and the other end of the spring is connected to the piston rod close to a piston; the inside of the gear box is provided with a miniature motor which is in series connection with a power supply and a power switch, and a gear transmission mechanism which is connected with the motor; and the gear transmission mechanism is meshed with the rack. The solder sucker has low cost and simple technique, and is difficult to block.

Description

A kind of electronic solder sucker

Technical field

The utility model relates to a kind of electronic solder sucker.

Background technology

Electronic solder sucker of the prior art generally is the vacuum pump type solder sucker, comprise and inhale the chamber, inhale the end that the chamber is connecting suction pipe, the other end of suction pipe connects a suction nozzle, this vacuum pump type solder sucker is to be made to inhale by vavuum pump to produce vacuum in the chamber and draw tin after the fusing, cost height and its suction of its complex process, vavuum pump are less, easily stop up.

Summary of the invention

The technical problems to be solved in the utility model provides simple, with low cost, the not susceptible to plugging electronic solder sucker of a kind of technology.

For addressing the above problem, the utility model provides a kind of electronic solder sucker, comprise and inhale the chamber, the one end is provided with suction nozzle, it is characterized in that, described suction chamber is a suction tube, the other end that this suction tube is relative with suction nozzle is connected with gear-box, be provided with in the suction tube can be in suction tube the pistons reciprocating bar, described piston rod is connected with piston near an end of suction nozzle, the other end is connected with tooth bar, article one, spring one end is connected on the described gear-box, the other end is connected close piston part on the piston rod, is provided with the micromachine of connecting with power supply and power switch in the described gear-box, the gear drive that is connected with motor, described gear drive and the engagement of described tooth bar.

Described gear drive comprises the source moving gear of motor, itself and the input gears engaged of a clutch gear group, the output gear of described clutch gear group and the gear wheel of reduction gearing mesh, then mesh with the reduction pinion teeth of the gear wheel coaxial rotation of reduction gearing with travelling gear, the coaxial final stage driven wheel that rotates synchronously that connecting, this final stage driven wheel and the engagement of described tooth bar on the described travelling gear.

Described clutch gear group comprises the input gear, idler gear, first pinion, second pinion and output gear, be connected with first pinion of coaxial synchronous rotation on the described input gear, described idler gear is the circular groove shape, the coaxial center that is placed through idler gear of described first pinion, and also be provided with the first relative flange and second flange in the idler gear, link together by connecting rod between two flanges, the axle of three circumferential equally distributed second pinions is rotating to be connected first, between second flange, and all be engaged on around described first pinion, described idler gear inner periphery is provided with internal tooth, excircle is provided with external tooth, and internal tooth and three second pinion, external tooth is then meshing a lock gear, and described lock gear can be touched with locking or rotation by locked switching mechanism; Described output gear is connected on described first flange and its coaxial rotation.

Described lock gear is provided with locking stop, described locking switch mechanism comprises switch cam, electromagnet, is series at the electro-magnet switch of electromagnet and power supply, described electromagnet can block, can discharge when cutting off the power supply the movable blocking arm of described locking stop when being provided with energising, coaxially on the described final stage driven wheel connecting described switch cam, the reciprocal stroke of the stroke of its rotation and piston adapts and touches described electro-magnet switch when reaching the stroke two ends at piston and cut off the power supply or reset.

Described piston is connected with thimble near a side of suction nozzle; The fixed contact of a manual selection switch is connected with power switch, an one movable contact is electrically connected an end of first electro-magnet switch, another movable contact is electrically connected second electro-magnet switch, one end, the other end of described two electro-magnet switch all is connected electrically in an end of electromagnet, and the other end of electromagnet is connected with power supply; Described two electro-magnet switch are stacked up and down; Radially-protruding protruding handle one side is concordant on the described switch cam, opposite side circumferentially stretches out is uneven in length, stepped, circumferentially longer part correspondence is touched described second electro-magnet switch and is made its outage, circumferentially shorter part correspondence is touched described first electro-magnet switch and is made its outage, and the circumference that cam rotates through when touching second electro-magnet switch makes thimble no show suction nozzle top still, and cam rotates through circumference thimble is exceeded outside the suction nozzle top when touching first electro-magnet switch.

Described gear-box comprises the end box that fastens successively, median septum and loam cake, described motor is located in the end box, described lock gear, the clutch gear group, travelling gear is arranged in respectively on the interior joint pin of end box, be penetrated with the tooth bar guide rail of the groove shape of a lateral opening in the middle of the described median septum, described electromagnet is located at the one side, the median septum bottom surface is provided with first through hole that appearance activity blocking arm passes, described electro-magnet switch, the final stage driven wheel, switch cam is located at tooth bar guide rail opposite side, described final stage driven wheel, switch cam is set on the driving gearshaft that passes median septum with gap coaxially; Described median septum outer wall is provided with the screens of the described spring of clamping; Piston rod is arranged in spring.

Described travelling gear is provided with can be suitable in switch cam, touch the reduction gearing gear wheel when being rotated counterclockwise and be the postioning abutment of the stroke limit of switch cam.

Described piston is connected with thimble near a side of suction nozzle.

Be provided with the tooth bar protection cylinder of holding tooth bar at described gear-box away from a side of suction tube, be provided with damping glue in the tube, the end thread of protection cylinder is connected with cover.

Described motor is an alternating current generator, and its source moving gear connects limited to cam, makes limit that motor can only unidirectional rotation to block and be provided with in the described gear-box to limit mutually to cam with described limit.

The beneficial effects of the utility model are: solder sucker of the present utility model is owing to adopt the micro motor for driving rack and pinion drive mechanism, and make reciprocating motion of the pistons by spring, produce negative pressure and be used for realizing suction tin, with low cost, technology is also simple, parts such as all gears, tooth bar, cam all can adopt plastic material, cost is cheaper, owing to use the resilience of tension type spring to produce negative pressure source, under the prerequisite that guarantees suction, the hole of its suction nozzle is big (for example diameter of 3～4mm), is difficult for stopping up.In further technical scheme, adopt thimble, along with piston when the suction nozzle direction move, mouth of the extended suction nozzle of thimble, thus the removing suction has further prevented obstruction at tin or other impurity of suction nozzle.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:

Fig. 1 is the utility model profile stereogram.

Fig. 2 is a stereogram of opening loam cake.

Fig. 3 is the parts exploded perspective views.

Fig. 4 is the three-dimensional exploded view of parts such as clutch gear group.

Fig. 5 is the motion stereogram behind removal gear-box and the suction tube.

Fig. 6 is median septum and described piston rod exploded view.

Fig. 7 is a circuit diagram of the present utility model.

Fig. 8 is the removal gear-box of another kind of embodiment and the motion stereogram behind the suction tube.

The specific embodiment

Relate to direction in below describing, such as up and down, counterclockwise, clockwise etc., be reference all with direction shown in Figure 3.

Consult Fig. 1～3, solder sucker of the present utility model comprises tooth bar protection cylinder 30, gear-box 10, suction tube 20, the suction nozzle 21 that is communicated with in turn.Suction tube is holding motor 40, gear drive as inhaling the chamber in the gear-box 10, then holding parts such as piston rod 22, piston 23 and spring 224 in the described suction tube 20.

Consult Fig. 2～Fig. 5, described gear-box 10 comprises end box 11, median septum 12 and the loam cake 13 that is buckled into casing successively.Box of the described end is box-like that opening makes progress, and is connecting the power line with plug 1 on it, is then holding described motor 40 in the box, and this motor is an ac micro motor, and the limit that axially being provided with of its rotor 41 is connected as a single entity is to cam 42 and source moving gear 43; Vertically be formed with plurality of fixed axle (46～49) on the stator 44 of described motor, as shown in Figure 3, wearing limit on first fixed axis 46 to block 45 and clutch gear group 50, limit is arranged on the outrigger shaft of input gear 51 belows in the clutch gear to the block cartridge clip, can on the outrigger shaft of input gear, rotate, when motor rotates counterclockwise, the input gear of source moving gear engagement rotates, driving limit clockwise rotates to block 45, the short projection 451 that limit is radially extended to block tangentially withstands epitrochanterian limit to cam 42, and limit is tangentially blocked the long projection 452 that limit is radially extended to block again to cam.Limit is defined to cam mutually to block and limit, and rotating counterclockwise of motor is under an embargo, and motor output shaft can only clockwise rotate; Wearing on second fixed axis 47 wearing on reduction gearing 80, the four fixed axis 49 on lock gear 60, the three fixed axis 48 and wearing travelling gear 90.

Wherein, described clutch gear group 50 as shown in Figure 4, comprise input gear 51, idler gear 52, pinion and output gear 53, be connected with first pinion 511 of coaxial synchronous rotation on the described input gear shaft projectedly, idler gear 52 has the gear wheel of a groove shape, described first pinion is placed through the groove center of idler gear with gap, the groove inner periphery is provided with internal tooth 521, the lower part of excircle is provided with external tooth 522, meshing a lock gear 60 on the external tooth, and also be provided with the first relative flange 523 and second flange 523 in the groove of idler gear, connect into integral body by 3 circumferential equally distributed connecting rods 525 between two flanges, rotating being connected between two flanges of axle of three circumferential equally distributed second pinions 526, and all be engaged on around described first pinion 511, and these three pinions 526 are engaged in the described internal tooth 521 of idler gear, and described output gear 53 is connected on described first flange 523 and its coaxial rotation.Described lock gear 60 is a column, and hypomere is a gear shaft, and the stage casing is and idler gear external tooth meshed gears that the epimere outer rim is provided with the locking stop of radially protruding 61.

Described median septum 12 for opening make progress more shallow box-like, which is provided with a lock gear switching mechanism 70, lock gear switching mechanism 70 comprises electromagnet 71, is connected in the electro-

magnet switch

73,74 and the switch cam 72 of electromagnet and power supply; Intermediate lateral at median septum is penetrated with a tooth bar guide rail 121 that holds tooth bar 222, the groove shape that this tooth bar guide rail is a lateral opening, the engaging tooth of tooth bar towards and be exposed to open side.In median septum, holding described electromagnet 71 in a side of tooth bar guide rail, the median septum bottom surface is provided with first through hole 122, the movable blocking arm 711 that holds this electromagnet is passed down through, can block locking stop 61 and not allow lock gear 60 rotate, at the opposite side of tooth bar guide rail and be positioned at inwall place, median septum right side and be provided with stacked first electro-magnet switch 73 and second electro-magnet switch 74, final stage driven wheel 92 and switch cam 72 up and down.This side approximate mid-section position also is provided with second through hole 123 on the described median septum 12, the axle of travelling gear 90 passes this second through hole from bottom to top with gap, described final stage driven wheel 92 is set on the described driving gearshaft, and coaxial sheathed the described switch cam 72 in this final stage driven wheel top, with final stage driven wheel, the coaxial synchronous rotation of travelling gear.Described switch cam 72 is an annular, outer rim extends radially out a protruding handle 721, be used for touching electro-

magnet switch

73,74 and realize the power on/off of electromagnet, described protruding handle one side is concordant, be used for touching electro-magnet switch to reset, opposite side, promptly be used for touching electro-magnet switch that side with outage, that circumferentially stretches out is uneven in length, stepped, circumferentially longer part b correspondence is touched described second electro-magnet switch 74, circumferentially shorter part a correspondence is touched described first electro-magnet switch 73, and the stroke of piston rod 22 adapted when the stroke of switch cam rotation was with suction tin when touching second electro-magnet switch 74, made thimble be convenient to suction nozzle from suction nozzle top distance for the 4-6 millimeter and inhaled tin; The stroke of switch cam rotation stroke of piston rod 22 when removing the residual tin of suction nozzle adapts when touching first electro-magnet switch 73, makes thimble exceed suction nozzle top distance and is the 4-6 millimeter, is convenient to dredge suction nozzle.

Described loam cake 13 is being established power switch 131 and manual selection switch 132 near this side of suction tube.

As preferred embodiment a kind of, to inhale tin and thimble and remove two kinds of functions of residual tin separately, this solder sucker circuit relationships as shown in Figure 7, contacting at the two ends of power supply power switch 131 and motor 40, the electromagnet branch road in the parallel connection of motor two ends, this electromagnet branch road is: the fixed contact of a manual selection switch 132 is connected with an end of motor 40, a movable contact of this manual selection switch is electrically connected an end of first electro-magnet switch 73, another movable contact is electrically connected second electro-magnet switch, 74 1 ends, the other end of described two electro-magnet switch all is connected electrically in an end of electromagnet 71, and the other end of electromagnet is electrically connected with the other end of motor.

Drive connection of the present utility model is: the driven by power rotor rotates, the source moving gear drives the input gear of clutch gear group, the output gear of described clutch gear group then with gear wheel 81 engagement of reduction gearing 80, below the gear wheel of reduction gearing, be provided with the reduction pinion teeth 82 of coaxial synchronous rotation with it, reduction pinion teeth then meshes with travelling gear 90, make the coaxial final stage driven wheel 92 of travelling gear rotate, this final stage driven wheel and 222 engagements of described tooth bar are along with the final stage driven wheel rotates and translation.

When electromagnet 71 energising, movable blocking arm 711 stretches out downwards, touches and block locking stop 61, makes the lock gear locking, can't be rotated further, and promptly can't rotate with the idler gear of its engagement; When the electro-magnet switch outage, movable blocking arm is risen by the electromagnet spring and discharges locking stop, and lock gear and idler gear are promptly rotatable.And described switch cam is along with the coaxial synchronous rotation of final stage driven wheel, when forwarding predetermined stroke to, protruding handle one side on the switch cam touches described electro-

magnet switch

73 or 74 and make its outage just, gear unlocks, spring 224 drives tooth bar 222 and replys and the revolution of promotion final stage driven wheel when replying, when switch cam is turned back to predetermined stroke, the opposite side of its protruding handle oppositely touches described electro-

magnet switch

73 or 74 and make its conducting that resets, locking again just.The reciprocal stroke of the default stroke of switch cam rotating and piston is harmonious.And, be provided with postioning abutment 93 at the upper surface of described travelling gear 90, when travelling gear turns clockwise, finally can make positive stop one side impact to reduction gearing gear wheel 81, thereby make travelling gear stop operating; Equally, when travelling gear is rotated counterclockwise, finally can make the positive stop opposite side run into the reduction gearing gear wheel, thereby make travelling gear rotate counterclockwise to stop, the rotation of switch cam is restricted, protection electro-

magnet switch

73,74.

As Fig. 3, shown in Figure 6, median septum one side of described gear-box is provided with the tooth bar protection cylinder 30 of holding tooth bar 222, its with median septum in tooth bar guide rail 121 be communicated with, the outer wall of opposite side is provided with round table-like connecting portion 124, the plastics suction tube 20 that is connecting a tubular, and on this connecting portion, be provided with L shaped screens 125, described suction tube away from an end of median septum then snapping a plastics suction nozzle 21, suction nozzle snapping place external diameter is provided with sealing ring 211, the outer end of described suction nozzle is provided with an elongated suction nozzle 212, the through hole of suction nozzle is being communicated with the suction tube volume inside, be used for inhaling the tin that has melted, ccontaining piston rod 22 in suction tube, this piston rod 22 comprises integrated described tooth bar 222 in turn, the piston body of rod 221, piston 23 and thimble 223, be arranged with a sealing ring 231 on the external diameter of piston, so that make the sealing as far as possible of piston and suction tube inwall, be provided with a groove near the piston place on the piston rod, card has a bayonet lock 226 in this groove, so that the other end of spring is stuck in the bayonet lock, thereby realize being connected of spring and piston rod, the other end of spring then is connected in the L shaped screens 125 on the median septum, piston rod 221 is positioned at the centre of spring 224, spring is along with piston stretches to the motion of suction nozzle direction, piston rod then shrinks along with recoil of spring and toward swivel motion, moves and so forth.Described thimble 223 is elongated shaft-like, is provided with ribs 225 at itself and piston junction, and when piston moved to the most close suction nozzle, the end of described thimble contacted to the suction nozzle outer end, can remove the tin or the impurity that are trapped in suction nozzle like this.

The tooth bar protection cylinder can be protected tooth bar, also protects user's safety, at the end of tooth bar protection cylinder 30, and the cover 31 that is being threaded, cover is embedded with damping glue 32 near an end of protection cylinder, so that the tooth bar of replying is played cushioning effect.

The course of work that solder sucker of the present utility model is inhaled tin is as follows:

Plug 1 connects power supply, closed power switch 131, manual selection switch 132 pushes with second electro-magnet switch, 74 places in circuit, electromagnet 71 energisings make lock gear 60 lockings, motor 40 startings simultaneously, its source moving gear 43 clockwise directions rotate, driving input gear 51 counterclockwise rotates, and then first pinion 511 on it rotates, drive second pinion, 526 autobiographies, because the external tooth 522 locked gears 60 of idler gear lock and can't rotate, therefore also revolution counterclockwise in idler gear simultaneously of second pinion, this revolution drives first, second flange counterclockwise rotates, thereby the output gear on first flange 53 counterclockwise rotates, rotate with reduction gearing gear wheel 81 clockwise directions of its engagement, its reduction pinion teeth 82 clockwise directions rotate, counterclockwise rotate with 90 of the travelling gears of its engagement, co-axially fixed final stage driven wheel 92 counterclockwise rotates, the tooth bar 222 that promotes engagement from gear-box 10 to suction tube 20 direction translationals, the piston 23 of one advances to the right, discharge the air in the suction tube, spring stretches simultaneously.

When piston reaches its stroke, promptly near suction nozzle, the b portion of the protruding handle of switch cam touches second electro-magnet switch 74 and makes its outage, movable blocking arm withdrawal, the lock gear release, idler gear rotates along with the rotation of second pinion, the output gear of clutch gear group rotates in the opposite direction with the input gear and makes the power of motor no longer pass to tooth bar, thereby spring replys, and the piston left lateral is at this moment because negative pressure generation suction picks up the tin after the fusing.

When spring is replied, can drive piston rod and tooth bar left lateral thereof, promote the revolution of final stage driven wheel, being turned back to predetermined stroke (tooth bar arrives tooth bar protection cylinder left end) makes the opposite side of protruding handle touch the opposite side of second electro-magnet switch 74 just, this electro-magnet switch is resetted and lock gear locks once more, the next circulation of beginning.So automatically, realization exhaust-suction tin-exhaust-... the cyclic process of-suction tin.When reaching above-mentioned return stroke, the positive stop of travelling gear upper surface also touches the gear wheel of reduction gearing just, thereby avoids switch cam revolution transition and damage electro-magnet switch 74.

It is approximate that solder sucker thimble of the present utility model is removed the work of the course of work of tin of suction nozzle and above-mentioned suction tin, institute's difference only is, manual selection switch 132 is pushed with first electro-magnet switch, 73 places in circuit, corresponding a portion of the protruding handle 721 of switch cam, when travelling gear drove tooth bar toward the operation of suction nozzle direction, its stroke was longer, make thimble exceed suction nozzle top distance and be the 4-6 millimeter, thereby the mediation suction nozzle returns after arriving stroke, when inhaling tin work in like manner.

Be another kind of embodiment as shown in Figure 8, be with the foregoing description difference, removing tin carries out simultaneously with suction tin, need not to use selector switch, only adopt an electro-magnet switch 73, the protruding handle 721 of switch cam 72 does not adopt stepped, and both sides are all straight, and the rotation of switch cam and the translation of piston rod only are provided with a corresponding stroke.For guaranteeing to inhale tin, thimble does not preferably stretch out outside the suction nozzle top, and the effect of removing tin like this can be weaker.Certainly, for solder sucker of the present utility model, thimble neither have.

Claims

1, a kind of electronic solder sucker, comprise and inhale the chamber, the one end is provided with suction nozzle, it is characterized in that, described suction chamber is a suction tube, the other end that this suction tube is relative with suction nozzle is connected with gear-box, be provided with in the suction tube can be in suction tube the pistons reciprocating bar, described piston rod is connected with piston near an end of suction nozzle, the other end is connected with tooth bar, and spring one end is connected on the described gear-box, and the other end is connected on the piston rod near the piston part, be provided with the micromachine of connecting in the described gear-box with power supply and power switch, the gear drive that is connected with motor, described gear drive and the engagement of described tooth bar.

2, electronic solder sucker according to claim 1, it is characterized in that, described gear drive comprises the source moving gear of motor, itself and the input gears engaged of a clutch gear group, the output gear of described clutch gear group and the gear wheel of reduction gearing mesh, then mesh with the reduction pinion teeth of the gear wheel coaxial rotation of reduction gearing with travelling gear, the coaxial final stage driven wheel that rotates synchronously that connecting, this final stage driven wheel and the engagement of described tooth bar on the described travelling gear.

3, electronic solder sucker according to claim 2, it is characterized in that, described clutch gear group comprises the input gear, idler gear, first pinion, second pinion and output gear, be connected with first pinion of coaxial synchronous rotation on the described input gear, described idler gear is the circular groove shape, the coaxial center that is placed through idler gear of described first pinion, and also be provided with the first relative flange and second flange in the idler gear, link together by connecting rod between two flanges, the axle of three circumferential equally distributed second pinions is rotating to be connected first, between second flange, and all be engaged on around described first pinion, described idler gear inner periphery is provided with internal tooth, excircle is provided with external tooth, and internal tooth and three second pinion, external tooth is then meshing a lock gear, and described lock gear can be touched with locking or rotation by locked switching mechanism; Described output gear is connected on described first flange and its coaxial rotation.

4, electronic solder sucker according to claim 3, it is characterized in that, described lock gear is provided with locking stop, described locking switch mechanism comprises switch cam, electromagnet, is series at the electro-magnet switch of electromagnet and power supply, described electromagnet can block, can discharge when cutting off the power supply the movable blocking arm of described locking stop when being provided with energising, coaxially on the described final stage driven wheel connecting described switch cam, the reciprocal stroke of the stroke of its rotation and piston adapts and touches described electro-magnet switch when reaching the stroke two ends at piston and cut off the power supply or reset.

5, electronic solder sucker according to claim 4 is characterized in that, described piston is connected with thimble near a side of suction nozzle; The fixed contact of a manual selection switch is connected with power switch, an one movable contact is electrically connected an end of first electro-magnet switch, another movable contact is electrically connected second electro-magnet switch, one end, the other end of described two electro-magnet switch all is connected electrically in an end of electromagnet, and the other end of electromagnet is connected with power supply; Described two electro-magnet switch are stacked up and down; Radially-protruding protruding handle one side is concordant on the described switch cam, opposite side circumferentially stretches out is uneven in length, stepped, circumferentially longer part correspondence is touched described second electro-magnet switch and is made its outage, circumferentially shorter part correspondence is touched described first electro-magnet switch and is made its outage, and the circumference that cam rotates through when touching second electro-magnet switch makes thimble leave distance to suction nozzle, and cam rotates through circumference thimble is exceeded outside the suction nozzle top when touching first electro-magnet switch.

6, according to claim 4 or 5 described electronic solder suckers, it is characterized in that, described gear-box comprises the end box that fastens successively, median septum and loam cake, described motor is located in the end box, described lock gear, the clutch gear group, travelling gear is arranged in respectively on the interior joint pin of end box, be penetrated with the tooth bar guide rail of the groove shape of a lateral opening in the middle of the described median septum, described electromagnet is located at the one side, the median septum bottom surface is provided with first through hole that appearance activity blocking arm passes, described electro-magnet switch, the final stage driven wheel, switch cam is located at tooth bar guide rail opposite side, described final stage driven wheel, switch cam is set on the driving gearshaft that passes median septum with gap coaxially; Described median septum outer wall is provided with the screens of the described spring of clamping; Piston rod is arranged in spring.

According to claim 4 or 5 described electronic solder suckers, it is characterized in that 7, described travelling gear is provided with can be suitable in switch cam, touch the reduction gearing gear wheel when being rotated counterclockwise and be the postioning abutment of the stroke limit of switch cam.

According to each described electronic solder sucker of claim 1～4, it is characterized in that 8, described piston is connected with thimble near a side of suction nozzle.

9, according to each described electronic solder sucker of claim 1～5, it is characterized in that, be provided with the tooth bar protection cylinder of holding tooth bar at described gear-box away from a side of suction tube, be provided with damping glue in the tube, the end thread of protection cylinder is connected with cover.

10, according to each described electronic solder sucker of claim 1～5, it is characterized in that, described motor is an alternating current generator, and its source moving gear connects limited to cam, makes limit that motor can only unidirectional rotation to block and be provided with in the described gear-box to limit mutually to cam with described limit.