Miniature precise electric tool
Technical field
The invention belongs to power tool equipment technical field, especially relate to a kind of Miniature precise electric tool.
Background technology
Electric tool operation principle is that the rotor of electromagnetic rotating formula or electromagnetic reciprocating low capacity motor does magnetic field intercepts acting running, apparatus for work is driven by transmission mechanism, driven gear strengthens the power of tool heads, thus make tool heads scraping or grind body surface, better pierce or object of polishing.And micro electric tool is as the one in electric tool, be mainly used in electrician, instrument and meter manufacture and maintenance.Existing micro electric tool is generally in use tool heads clamped by rotary drilling chuck, but because rotating shaft during replacing tool heads is easily rotated, this just causes the replacing of tool heads very inconvenient, and rotary head is fixing firm not, existing microtool head also also exists in addition: complex structure, volume is large, and one hand is difficult to control, the problems such as dismounting inconvenient maintenance.
In order to solve prior art Problems existing, people have carried out long-term exploration, propose solution miscellaneous.Such as, Chinese patent literature discloses a kind of singlehanded Miniature electric drill [application number: 201220240730.5], and it comprises chuck, motor, lever and battery, and described motor is arranged on the top of lever, and the output shaft of motor is connected with chuck.
Such scheme to some extent solves the problem that existing Miniature electric drill one hand is not easily controlled, but the program still also exists: during replacing tool heads, rotating shaft is easily rotated, the replacing inconvenience of tool heads, rotary head is fixing firm not, volume is large, the problems such as dismounting inconvenient maintenance.
Summary of the invention
The object of the invention is for the problems referred to above, provide a kind of structure simple, during replacing tool heads, rotating shaft is not easily rotated, and tool heads changes Miniature precise electric tool easily.
For achieving the above object, present invention employs following technical proposal: this Miniature precise electric tool, comprise cylindrical body, electric driver mechanism and rotating shaft is provided with in cylindrical body, described electric driver mechanism has power output shaft, described rotating shaft outer end is provided with the clamp system that tool heads can be clamped, it is characterized in that, described rotating shaft be provided with between power output shaft drive the synchronous circumference of rotating shaft to rotate when electric driver mechanism is in running order by power output shaft and be in the state of quitting work when electric driver mechanism and rotating shaft outer end is subject to circumferential active force time can by the single-direction transmission coupling assembling of rotating shaft circumference locking.In this structure, electric driver mechanism drives power output shaft circumference to rotate, rotate at the drive lower rotary shaft of power output shaft thus drive tool heads to rotate, when tool heads changed by needs, rotating shaft circumference under the effect of single-direction transmission coupling assembling is fixing, tool heads clamps by clamp system, makes the replacing of tool heads convenient, tool heads fixation.
In above-mentioned Miniature precise electric tool, described single-direction transmission coupling assembling comprises the location cylindrical shell be fixed in cylindrical body, described rotating shaft be located in rotationally location cylindrical shell in and rotating shaft rear end is fixed with positioning seat, described power output shaft is fixed with matching seat, described positioning seat and matching seat cooperatively interact and both cooperation places are positioned at location cylindrical shell, described positioning seat, be provided with between matching seat and location cylindrical shell matching seat to be made to drive the synchronous circumference of positioning seat to rotate when matching seat rotates and when matching seat is in the state of quitting work, rotating shaft outer end is subject to circumferential active force time positioning seat can be made to be positioned at the single-direction transmission syndeton of locating in cylindrical shell.Namely drive when matching seat rotates the synchronous circumference of positioning seat to rotate thus realize the circumference rotation of rotating shaft, positioning seat can be made to be positioned in the cylindrical shell of location when rotating shaft circumference is stressed, thus the circumference realizing rotating shaft being fixed.
In above-mentioned Miniature precise electric tool, described single-direction transmission syndeton comprises two planes being symmetricly set on positioning seat sidepiece and two and is symmetricly set on the angle of positioning seat sidepiece and plane and angle are arranged alternately, one end that described matching seat coordinates with positioning seat is tubular and is provided with four at inwall and coordinates pin, described angle coordinates between pin at two, described plane coordinates between pin at two, each plane is respectively equipped with an axle lock and this axle lock is positioned at two coordinates between pin, angle described in when matching seat rotates with coordinate pin to contact thus promote positioning seat rotate and when matching seat is in the state of quitting work, rotating shaft outer end is subject to circumferential active force time the axle be positioned in plane lock one end of moving to plane thus axle locked and be clamped on plane, coordinate between pin sidepiece and location cylinder inboard wall.Obviously, when positioning seat circumference is stressed, plane run-off the straight, axle lock balance is broken and makes axle lock be clamped on plane, cooperation pin sidepiece and locate between cylinder inboard wall, thus makes positioning seat circumference fixing; When matching seat rotates, axle lock is engaged pin and promotes to move along planar horizontal, and angle contacts thus promotes positioning seat rotate with coordinating pin, thus realizes the circumference rotation of positioning seat; In addition as preferred, axle lock is here ball or needle roller.
In above-mentioned Miniature precise electric tool, between described location cylindrical shell and rotating shaft, be provided with axial location duplex bearing between.When this structure makes axis of rotation, frictional force is less, and axis of rotation is steady.
In above-mentioned Miniature precise electric tool, described clamp system comprises tubular collet sleeve, internal thread is provided with at collet sleeve inwall, described rotating shaft is provided with external screw thread, and described internal thread is connected with external screw thread, is provided with in collet sleeve and somely surrounds together and can axially can move forward and the jaw drawn under the promotion of roller end.Namely, when collet sleeve and shaft thread screw, tool heads clamps by jaw.
In above-mentioned Miniature precise electric tool, the end face of described rotating shaft outer end is provided with the tool heads accommodation hole axially extended internally.Obviously, tool heads to be here plugged in tool heads accommodation hole and to be clamped by jaw, makes the fixing more firm of tool heads.
In above-mentioned Miniature precise electric tool, described electric driver mechanism comprises the motor be fixed in cylindrical body and the governing box be connected on motor, and described power output shaft is arranged on governing box.
In above-mentioned Miniature precise electric tool, the end of described cylindrical body is fixed with the handle of hollow, and at handle built with electric supply installation, described electric supply installation is connected with electric driver mechanism, is provided with gauge tap between described electric supply installation and electric driver mechanism.As preferably, electric supply installation is here battery, and gauge tap is arranged in cylindrical body, and gauge tap here can control the forward and reverse of motor in addition, is provided with arcwall face outside cylindrical body, is convenient to like this to hold or the operation such as hand-held.
In above-mentioned Miniature precise electric tool, described handle comprises cylindrical shell and is threaded in the capping of cylinder back-end, and described barrel front end turns round fixing mechanism and cylindrical body is connected by anti-.Obviously, the installation of electric supply installation is convenient in capping here, and in addition, cylindrical shell is provided with the cannelure that circumference is arranged, and described cylindrical body inwall is provided with the annular convex ring matched with cannelure.
In above-mentioned Miniature precise electric tool, described anti-turn round fixing mechanism comprise out in barrel front end sidepiece at least one side opening and be located at least one fixture block of cylindrical body inwall, described fixture block inserts in side opening, and described cylindrical body rear end and barrel front end are socketed and are provided with buckle connecting structure at socket place.When this structure makes to install or remove capping, cylindrical shell can not rotate relative to circumference with cylindrical body, as preferably, here cylindrical body is that two and half housings surround fastening and form, and described side opening and fixture block are separately positioned on two and half housings, this electric tool entirety is in lip pencil in addition, makes it to be convenient to grip.
Compared with prior art, the advantage of this Miniature precise electric tool is: simple and reasonable, compact in design, and during replacing tool heads, rotating shaft is not easily rotated, and tool heads is changed conveniently and energy fixation, and volume is little, is convenient to grip, and easy to maintenance, resistance to overturning is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structure sectional view of single-direction transmission syndeton intermediate axle lock reset condition in the present invention.
Fig. 3 is the structure sectional view that in the present invention, single-direction transmission syndeton intermediate axle lock is clamped state.
Fig. 4 is structure sectional view when angle and cooperation pin contact in single-direction transmission syndeton in the present invention.
In figure, cylindrical body 1, electric driver mechanism 2, motor 21, governing box 22, rotating shaft 3, tool heads accommodation hole 31, power output shaft 4, clamp system 5, tool heads 51, collet sleeve 52, jaw 53, single-direction transmission coupling assembling 6, location cylindrical shell 61, positioning seat 62, matching seat 63, single-direction transmission syndeton 64, plane 641, angle 642, coordinate pin 643, axle lock 644, duplex bearing 7, handle 8, electric supply installation 81, gauge tap 82, cylindrical shell 83, cannelure 831, annular convex ring 832, arcwall face 833, capping 84, prevent turning round fixing mechanism 9, side opening 91, fixture block 92.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
As Figure 1-4, this Miniature precise electric tool, comprise cylindrical body 1, electric driver mechanism 2 and rotating shaft 3 is provided with in cylindrical body 1, electric driver mechanism 2 has power output shaft 4, rotating shaft 3 outer end is provided with the clamp system 5 that tool heads 51 can be clamped, be provided with between rotating shaft 3 with power output shaft 4 drive the synchronous circumference of rotating shaft 3 to rotate when electric driver mechanism 2 is in running order by power output shaft 4 and be in the state of quitting work when electric driver mechanism 2 and rotating shaft 3 outer end is subject to circumferential active force time can by the single-direction transmission coupling assembling 6 of circumferential for rotating shaft 3 locking, in this structure, electric driver mechanism 2 drives power output shaft 4 circumference to rotate, rotate at the drive lower rotary shaft 3 of power output shaft 4 thus drive tool heads 51 to rotate, when tool heads 51 changed by needs, rotating shaft 3 circumference under the effect of single-direction transmission coupling assembling 6 is fixing, tool heads 51 clamps by clamp system 5, make the replacing of tool heads 51 convenient, tool heads 51 fixation.
Particularly, here single-direction transmission coupling assembling 6 comprises the location cylindrical shell 61 be fixed in cylindrical body 1, rotating shaft 3 be located in rotationally location cylindrical shell 61 in and rotating shaft 3 rear end is fixed with positioning seat 62, power output shaft 4 is fixed with matching seat 63, positioning seat 62 and matching seat 63 cooperatively interact and both cooperation places are positioned at location cylindrical shell 61, positioning seat 62, be provided with between matching seat 63 and location cylindrical shell 61 matching seat 63 to be made to drive the synchronous circumference of positioning seat 62 to rotate when matching seat 63 rotates and when matching seat 63 is in the state of quitting work, rotating shaft 3 outer end is subject to circumferential active force time positioning seat 62 can be made to be positioned at the single-direction transmission syndeton 64 of locating in cylindrical shell 61, namely drive when matching seat 63 rotates the synchronous circumference of positioning seat 52 to rotate thus realize the circumference rotation of rotating shaft 3, when rotating shaft 3 circumferential stressed time can make positioning seat 52 be positioned at location cylindrical shell 61 in, thus the circumference realizing rotating shaft 3 is fixed.
Further, here single-direction transmission syndeton 64 comprises two planes 641 being symmetricly set on positioning seat 62 sidepiece and two and is symmetricly set on the angle 642 of positioning seat 62 sidepiece and plane 641 and angle 642 are arranged alternately, one end that matching seat 63 coordinates with positioning seat 62 is tubular and is provided with four at inwall and coordinates pin 643, angle 642 coordinates between pin 643 at two, plane 641 coordinates between pin 643 at two, each plane 641 is respectively equipped with an axle lock 644 and this axle lock 644 coordinates between pin 643 at two, angle 642 described in when matching seat 63 rotates with coordinate pin 643 to contact thus promote positioning seat 62 rotate and when matching seat 63 is in the state of quitting work, rotating shaft 3 outer end is subject to circumferential active force time the axle be positioned in plane 641 lock 644 and move to one end of plane 641 thus make axle lock 644 to be clamped on plane 641, coordinate between pin 643 sidepiece and location cylindrical shell 61 inwall, obviously, when positioning seat 62 circumferential stressed time, plane 641 run-off the straight, axle lock 644 balance is broken and makes axle lock 644 be clamped on plane 641, coordinate between pin 643 sidepiece and location cylindrical shell 61 inwall, thus make positioning seat 62 circumference fixing, when matching seat 63 rotates, axle lock 644 is engaged pin 643 and promotes to move horizontally along plane 641, angle 642 with coordinate pin 643 to contact thus promote positioning seat 62 to rotate, thus realize the circumference rotation of positioning seat 62, in addition as preferred, axle lock 644 is here ball or needle roller.In addition, when rotating to make rotating shaft 3, frictional force is less, stability of rotation, is provided with axial location duplex bearing 7 between location cylindrical shell 61 and rotating shaft 3.
Clamp system 5 in the present embodiment comprises tubular collet sleeve 52, internal thread is provided with at collet sleeve 52 inwall, rotating shaft 3 is provided with external screw thread, and internal thread is connected with external screw thread, be provided with in collet sleeve 52 and somely surround together and can axially move forward under the promotion of rotating shaft 3 end and the jaw 53 drawn in, namely, when collet sleeve 52 screws with rotating shaft 3 screw thread, tool heads 51 clamps by jaw.The end face of rotating shaft 3 outer end is provided with the tool heads accommodation hole 31 axially extended internally, and obviously, tool heads 51 to be here plugged in tool heads accommodation hole 31 and to be clamped by jaw 53, makes the fixing more firm of tool heads 51.
Preferably, electric driver mechanism 2 comprises the motor 21 be fixed in cylindrical body 1 and the governing box 22 be connected on motor 21, and power output shaft 4 is arranged on governing box 22.The end of cylindrical body 1 is fixed with the handle 8 of hollow, at handle 8 built with electric supply installation 81, electric supply installation 81 is connected with electric driver mechanism 2, be provided with gauge tap 82 between electric supply installation 81 and electric driver mechanism 2, as preferably, electric supply installation 81 is here battery, and gauge tap 82 is arranged in cylindrical body 1, here gauge tap 82 can control the forward and reverse of motor 21 in addition, is provided with arcwall face 833 outside cylindrical body 1, is convenient to like this to hold or the operation such as hand-held.Handle 8 comprises cylindrical shell 83 and is threaded in the capping 84 of cylindrical shell 83 rear end, cylindrical shell 83 front end is connected with cylindrical body 1 by anti-fixing mechanism 9 of turning round, obviously, here the installation of electric supply installation 81 is convenient in capping 84, in addition, cylindrical shell 83 is provided with the cannelure 831 that circumference is arranged, and described cylindrical body 1 inwall is provided with the annular convex ring 832 matched with cannelure 831.
Anti-turn round fixing mechanism 9 comprise out in cylindrical shell 83 front end sidepiece at least one side opening 91 and be located at least one fixture block 92 of cylindrical body 1 inwall, fixture block 92 inserts in side opening 91, cylindrical body 1 rear end and cylindrical shell 83 front end are socketed and are provided with buckle connecting structure at socket place, when this structure makes to install or remove capping 84, cylindrical shell 83 can not rotate relative to circumference with cylindrical body 1, as preferably, here cylindrical body 1 is that two and half housings surround fastening and form, and described side opening 91 and fixture block 92 are separately positioned on the both sides of two and half housings, this electric tool entirety is in lip pencil in addition, make it to be convenient to grip and carry.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ cylindrical body 1 herein, electric driver mechanism 2, motor 21, governing box 22, rotating shaft 3, tool heads accommodation hole 31, power output shaft 4, clamp system 5, tool heads 51, collet sleeve 52, jaw 53, single-direction transmission coupling assembling 6, location cylindrical shell 61, positioning seat 62, matching seat 63, single-direction transmission syndeton 64, plane 641, angle 642, coordinate pin 643, axle lock 644, duplex bearing 7, handle 8, electric supply installation 81, gauge tap 82, cylindrical shell 83, cannelure 831, annular convex ring 832, arcwall face 833, capping 84, prevent turning round fixing mechanism 9, side opening 91, term such as fixture block 92 grade, but do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.