CN108724073A

CN108724073A - A kind of screwdriver

Info

Publication number: CN108724073A
Application number: CN201810910768.0A
Authority: CN
Inventors: 郑衍畅; 杨永恒; 张玉友; 曹灿; 姜朋; 黄敏捷
Original assignee: Anhui Polytechnic University
Current assignee: Anhui Polytechnic University
Priority date: 2018-08-10
Filing date: 2018-08-10
Publication date: 2018-11-02
Anticipated expiration: 2038-08-10
Also published as: CN108724073B

Abstract

A kind of screwdriver belongs to daily life tools technical field, this screwdriver, including handle of a knife, knife bar and cutter head, handle of a knife are set as hollow-core construction, be internally provided with PLC control chip, regulated power supply, outside be provided with detection grip high low signal pressure sensor；It is provided with the connected iron core of cutter head in knife bar, is socketed with and the concatenated coil of regulated power supply outside iron core；Grip signal transmission is controlled chip by pressure sensor to PLC, PLC controls chip makes iron core magnetize by controlling regulated power supply output electric current of corresponding size, the beneficial effects of the invention are as follows, it is controllably and multi-functional in one that the screwdriver realizes magnetic force, the size of the presence or absence of magnetic force and magnetic force can be controlled according to actual use situation, and the phenomenon that being not in demagnetization, extend service life, and can cutter head be stored and be replaced to used cutter head timely and conveniently, the function of illumination, charging is also achieved, is provided convenience for the use of people.

Description

A kind of screwdriver

Technical field

The present invention relates to daily life tools technical field more particularly to a kind of screwdrivers.

Background technology

In daily life, it often be unable to do without screwdriver.There are many types for screwdriver, such as：Flat mouth screwdriver, ten Font screwdriver, combined screwdriver etc., they all offer convenience to the production and life of people, are favored by people.Currently, Multifunctional screw driver wide market, but domestic multifunctional screw driver not too many progress and update mostly at present, it is main Want it is multi-functional rest on replacing with for cutter head, magnetic screwdriver is also used widely at present, because of its cutter head It is designed with magnet, when the screw in the place that hand reaches is sucked out, with very convenient.

But existing screwdriver still has problems with：1) existing band magnetic screwdriver is due to being equipped with magnetic at cutter head Iron not enough or the too strong problem of magnetic force due to magnetic force, can have that screw is fallen or screw is inhaled repeatedly during installing screw The problem of going out keeps installation not convenient enough, and, using or due to the influence of residing environment, can face asking for demagnetization for a long time Topic, shortens its service life；2) since there are many type of current driver bit, independent storage box body is needed at present Cutter head is stored, this location mode tends to that cutter head is made to lose, and cutter head storage is inconvenient not in time；3) when making When using under dark surrounds screwdriver with personnel, another people is needed using flashlight etc. to illuminate, use is not convenient enough, Installation effectiveness is low.

To sum up, a kind of multifunctional screw driver that magnetic force is controllable is designed, the presence or absence of magnetic force can be controlled according to actual use situation With the size of magnetic force, and the phenomenon that be not in demagnetization, its service life is set to extend, but also may be implemented timely and conveniently Cutter head is stored and replaced to used cutter head, the function of can also be achieved illumination is the needs of current people.

Invention content

In order to solve the above technical problem, the present invention provides a kind of screwdrivers, mainly solve existing screwdriver and exist Fallen there are screw or screw is sucked out repeatedly when screw is installed, and long-time using or due to residing environment influence, The problem of demagnetization can be faced, further solves the storage of existing driver bit and replaces inconvenient and have a single function Problem, the screwdriver can control the size of the presence or absence of magnetic force and magnetic force according to actual use situation, and be not in demagnetization Phenomenon, service life extends, but also may be implemented to be stored and replaced cutter head by used cutter head timely and conveniently, also Illumination installation, charging can be carried out, the multifunctional application of screwdriver is realized, is provided convenience for the use of people.

To achieve the above object, the technical solution adopted by the present invention to solve the technical problems is：The screwdriver, it is special Sign is, including handle of a knife, knife bar and cutter head, and the handle of a knife is set as hollow-core construction, be internally provided with PLC control chip, can Adjust power supply, outside be provided with detection grip high low signal pressure sensor；It is provided in the knife bar and is connected with cutter head Iron core, the iron core are socketed with and the concatenated coil of the regulated power supply outside；The pressure sensor gives grip signal transmission PLC controls chip, and PLC controls chip makes iron core magnetize by controlling regulated power supply output electric current of corresponding size.

Further, the regulated power supply includes lithium battery and DC/DC conversion chips, and the lithium battery is turned by DC/DC It is coil power supply to change chip, and the PLC controls chip outputs control signals to DC/DC conversion chips to control regulated power supply output Size of current.

Further, the cutter head is removably connected with knife bar.

Further, cutter head receptacle is provided on the handle of a knife, the cutter head receptacle includes being fixed on handle of a knife Annular base and the cutter head storage unit slided up and down along handle of a knife, the annular base are matched with the cutter head storage unit elastic guide It closes.

Further, the cutter head storage unit is set as circular cylinder, and the peripheral direction of the cutter head storage unit is provided with It is multiple to deposit tool bore, removably it is connected with cutter head at the opposite annular base of tool bore with described deposit.

Further, the annular groove with cutter head storage unit clearance fit, the annular are provided on the annular base Groove is connected by spring with cutter head storage unit.

Further, the handle of a knife along its length on be provided with guide pad, the inside setting of the cutter head storage unit There is the guide groove being slidably matched with the guide pad.

Further, the handle of a knife is set as multi-diameter shaft, including is relatively large in diameter section and diameter compared with segment, and the diameter is smaller Section is fixedly linked with the annular base, and the cutter head storage unit is connect with being relatively large in diameter section and slide up and down.

Further, the lower end of the annular base is provided with adopting surface mounted LED, and control switch is provided on the handle of a knife, The control switch is connected by regulated power supply with adopting surface mounted LED.

Further, the charging circuit being connect with the regulated power supply, the end of the handle of a knife are additionally provided in the handle of a knife Portion is provided with the USB charge ports being connected with charging circuit.

The beneficial effects of the invention are as follows：

1, by holding the handle of a knife of the screwdriver with different grips, pressure is believed by the pressure sensor on handle of a knife PLC control chips number are transferred to, PLC control chips output control signals to DC/DC conversion chips to control regulated power supply output Size of current, and then the size of current in control coil makes iron core magnetize, the dynamics of gripping is bigger, and PLC controls chip controls DC/ The electric current of DC conversion chips output is bigger, and the magnetic force that iron core is magnetized is stronger, keeps the strength that cutter head attracts screw bigger, similarly Principle holds the small then cutter head of dynamics and attracts the strength of screw smaller, and not when contact pressure sensor, the electric current in coil is zero, Cutter head not will produce magnetic force, will not attract screw.The screwdriver can control magnetic according to the case where size or actual installation of screw The size of the presence or absence of power and magnetic force, and be not in the phenomenon that using rear demagnetization for a long time, to extend its service life.

2, wherein, cutter head receptacle is set on handle of a knife, needs replacing cutter head when seated, then the cutter head removed on knife bar is put Enter depositing in tool bore for cutter head storage unit, and press cutter head storage unit, so that cutter head is passed through and deposit tool bore on annular base, simultaneously Cutter head needed for taking out unclamps cutter head storage unit, resets, realized used knife timely and conveniently under the elastic force of spring Cutter head is stored and replaced to head, avoids the loss of cutter head；

3, the lower end of annular base is provided with adopting surface mounted LED, and handle of a knife is equipped with control and switchs, when user of service is under dark When work, it is electric that operation-control switch makes adopting surface mounted LED obtain, and realizes the function of illumination, so that installation screw is more convenient, working efficiency Higher；When the low battery of lithium battery, user of service only needs through filling in the USB charge ports and handle of a knife at handle of a knife Circuit charges to lithium battery, using more convenient, more energy efficient.

To sum up, the present invention realize screwdriver magnetic force it is controllably and multi-functional in one, can be according to actual use situation control The size of the presence or absence of magnetic force processed and magnetic force, and the phenomenon that be not in demagnetization, service life is extended, and can be timely and convenient Cutter head is stored and replaced to used cutter head by ground, also achieves the function of illumination, charging, is provided for the use of people It is convenient.

Description of the drawings

Below to each width attached drawing of description of the invention expression content and figure in label be briefly described：

Fig. 1 is the stereogram of the present invention；

Fig. 2 is the upward view of Fig. 1；

Fig. 3 is the sectional view of the structural schematic diagram of an embodiment of the present invention；

Fig. 4 is the sectional view of the structural schematic diagram of another embodiment of the present invention；

Label in above-mentioned figure is：1. handle of a knife, 11. guide pads, 12. are relatively large in diameter section, and 13. diameters are compared with segment, 14. controls System switch, 15.USB charge ports, 2. knife bars, 3. cutter heads, 4.PLC control chip, 5. regulated power supplies, 51. lithium batteries, 52.DC/DC Conversion chip, 6. pressure sensors, 7. iron cores, 8. coils, 9. cutter head receptacles, 91. annular bases, 911. annular grooves, 92. Cutter head storage unit, 921. deposit tool bore, 922. guide grooves, 93. springs, 10. adopting surface mounted LEDs.

Specific implementation mode

The specific implementation mode of the present invention is made further detailed by the description to optimum embodiment below against attached drawing Thin explanation.

Specific embodiment of the present invention is：As shown in Figure 1 to 4, a kind of screwdriver, including handle of a knife 1, knife bar 2 and knife First 3, handle of a knife 1 is set as hollow-core construction, is internally provided with PLC controls chip 4, regulated power supply 5, outside be provided with detection and hold The pressure sensor 6 of power high low signal；Knife bar 2 is also configured as hollow structure, and one end is set as open end, and the other end is set as Sealed end, knife bar 2 be internally provided with the iron core 7 being in contact with cutter head 3, and the sealed end of knife bar 2 is provided with to be clamped with iron core 7 Blind hole is socketed with and 5 concatenated coil 8 of regulated power supply for positioning iron core 7 outside iron core 7；Pressure sensor 6 believes grip Number it is transferred to PLC control chips 4, PLC, which controls chip 4 and exports electric current of corresponding size by controlling regulated power supply 5, makes 7 magnetic of iron core Change；Specifically, PLC controls chip 4 and can be set to cheap, small volume 51 microcontrollers, reduces integrally-built system Cause this；Specifically, regulated power supply 5 includes lithium battery 51 and DC/DC conversion chips 52, and lithium battery 51 converts core by DC/DC Piece 52 is powered for coil 8, and PLC control chips 4 output control signals to DC/DC conversion chips 52 to control the output of regulated power supply 5 Size of current.

The magnetic force control principle of the screwdriver is：By holding the handle of a knife 1 of the screwdriver with different grips, pass through knife Pressure signal is transferred to PLC and controls chip 4 by the pressure sensor 6 on handle 1, and PLC control chips 4 output control signals to DC/ DC conversion chips 52 control 5 output current size of regulated power supply, and then the size of current in control coil 8 makes iron core 7 magnetize, The dynamics of gripping is bigger, and the electric current that PLC controls 52 output of the control DC/DC of chip 4 conversion chips is bigger, the magnetic that iron core 7 is magnetized Power is stronger, keeps the strength that cutter head 3 attracts screw bigger, and same principle, gripping dynamics is small, and cutter head 3 attracts the strength of screw to get over Small, not when contact pressure sensor 6, the electric current in coil 8 is zero, and cutter head 3 not will produce magnetic force, will not attract screw.The spiral shell Silk knife can be according to the size for controlling the presence or absence of magnetic force and magnetic force the case where the size or actual installation of screw, and is not in length Time uses the phenomenon that rear demagnetization, extends its service life.

Specifically, cutter head 3 is removably connected with knife bar 2, and connection structure can be：As shown in figure 3, cutter head 3 with Knife bar 2 is threadably connected, and one end of cutter head 3 is provided with external screw thread, and the bottom of knife bar 2 is provided with internal thread, and cutter head 3 The rotation direction of threaded connection between knife bar 2 and cutter head 3 install that the rotation direction of screw is identical, avoid when cutter head 3 installs screw It loosens；As shown in figure 4, cutter head 3 is connected with knife bar 2 in a manner of flexible clamping, i.e. one end of cutter head 3 is provided with keyway blocked hole, The bottom of knife bar 2 is provided with the elastic clamping block being clamped with keyway blocked hole, is provided with multiple blind holes on knife bar 2, blind hole passes through bullet Spring is connected with elastic clamping block, by by keyway blocked hole be connected on elastic clamping block realize clamping be connected, when need dismantle cutter head 3 When, only need to press elastic clamping block with hand makes in elastic clamping block retraction blind hole, and cutter head 3 and knife bar 2 are detached from.

Optimally, in order to timely and convenient cutter head 3 is stored and replaced to used cutter head 3, avoid losing for cutter head 3 It loses, is provided with cutter head receptacle 9 on handle of a knife 1, cutter head receptacle 9 includes the annular base 91 being fixed on handle of a knife 1 and along handle of a knife 1 The cutter head storage unit 92 slided up and down, annular base 91 coordinate with 92 elastic guide of cutter head storage unit；Specifically, annular base 91 On be provided with annular groove 911 with 92 clearance fit of cutter head storage unit, annular groove 911 passes through spring 93 and cutter head storage unit 92 are connected, and realize annular base 91 and the elastic guide of cutter head storage unit 92 coordinates, make to pick and place 3 rear blade storage unit 92 of cutter head It can reset；

Optimally, in order to which when picking and placeing cutter head 3, the overall structure of cutter head receptacle 9 is more stable, handle of a knife 1 is square along its length Guide pad 11 is set up, the inside of cutter head storage unit 92 is provided with the guide groove 922 being slidably matched with guide pad 11, makes to lead It is slided up and down to block 11 along guide groove 922, without axial shaking；

Optimally, in order to keep cutter head storage more stable, and convenient for taking out, cutter head storage unit 92 is set as circular cylinder, The peripheral direction of cutter head storage unit 92 be provided with it is multiple deposit tool bore 921, the position of the annular base 91 opposite with tool bore 921 is deposited with Cutter head 3 is removably connected, and is provided in the annular groove 911 of annular base 91 opposite with tool bore 921 is deposited more A blind hole, this Detachable connection structure of setting, one of which structure are in blind hole, as shown in figure 3, being provided in blind hole and knife First 3 internal threads being threadedly coupled, as shown in figure 4, another structure is to be provided with the elastic card of 3 flexible clamping of cutter head in blind hole Block, this elastic clamping block can stretch in blind hole.Optimally, the corresponding position for each depositing tool bore 921 may be provided with cutter head type Label, convenient for according to label classification carry out storage cutter head 3, keep the access of cutter head 3 faster.Optimally, in order to make to deposit tool bore 921 inner wall is more smooth, and intensity higher, metal sleeve can be installed by depositing in tool bore 921.

Realize that the access procedure of cutter head 3 is with above-mentioned cutter head receptacle 9：When needing replacing knife according to different screw specifications When first 3, then removes the cutter head 3 on knife bar 2 and be put into depositing in tool bore 921 at the respective labels of cutter head storage unit 92, and press push type broach Head storage unit 92, makes cutter head 3 by depositing tool bore 921 in the blind hole on annular base 91, while taking out required cutter head 3, cutter head storage unit 92 is unclamped, cutter head storage unit 92 resets under the elastic force of spring 93.

Optimally, handle of a knife 1 is set as multi-diameter shaft, including is relatively large in diameter section 12 and diameter compared with segment 13, and diameter is compared with segment 13 It is fixedly linked, can be connected by welding with annular base 91, cutter head storage unit 92 is slided up and down with section 12 is relatively large in diameter Connection, keeps the fit structure between cutter head receptacle 9 and handle of a knife 1 more stable.

Optimally, the lower end of annular base 91 is provided with adopting surface mounted LED 10, and control switch 14, control are provided on handle of a knife 1 Switch 14 is connected by regulated power supply 5 with adopting surface mounted LED 10, and adopting surface mounted LED 10 is small, keeps overall structure more compact, and Adopting surface mounted LED 10 can be located in by inlaying fixed mode on annular base 91.When user of service works under dark, behaviour It is electric that work control switch 14 makes adopting surface mounted LED 10 obtain, and realizes the function of illumination, so that installation screw is more convenient, working efficiency higher.

Optimally, be additionally provided with the charging circuit being connect with regulated power supply 5 in handle of a knife 1, the structure of charging circuit with it is existing The charging circuit of some lithium battery chargers is identical, and the charging circuit is integrated on a single die, and the end set of handle of a knife 1 has The USB charge ports 15 being connected with charging circuit, when the low battery of the lithium battery 51 in regulated power supply 5, user of service only needs It to be charged to lithium battery 51 by the charging circuit in the USB charge ports 15 and handle of a knife 1 at handle of a knife 1, using more convenient, more It is energy saving.

The above, some principles for the present invention that only explains through diagrams, this specification are not intended to limit to the present invention In the shown concrete structure and the scope of application, therefore every corresponding modification for being possible to be utilized and equivalent, Belong to the apllied the scope of the claims of the present invention.

Claims

1. a kind of screwdriver, which is characterized in that including handle of a knife (1), knife bar (2) and cutter head (3), the handle of a knife (1) is set as empty Core structure is internally provided with PLC control chips (4), regulated power supply (5), outside be provided with detection grip high low signal Pressure sensor (6)；Is provided with the iron core (7) being connected with cutter head (3) in the knife bar (2), the iron core (7) be socketed with outside and The concatenated coil of the regulated power supply (5) (8)；Grip signal transmission is controlled chip (4) by the pressure sensor (6) to PLC, PLC control chips (4) make iron core (7) magnetize by controlling regulated power supply (5) output electric current of corresponding size.

2. screwdriver according to claim 1, it is characterised in that：The regulated power supply (5) includes lithium battery (51) and DC/ DC conversion chips (52), the lithium battery (51) are powered by DC/DC conversion chips (52) for coil (8), and the PLC controls core Piece (4) outputs control signals to DC/DC conversion chips (52) to control regulated power supply (5) output current size.

3. screwdriver according to claim 1, it is characterised in that：The cutter head (3) and knife bar (2) removably phase Even.

4. screwdriver according to claim 3, it is characterised in that：It is provided with cutter head receptacle (9) on the handle of a knife (1), The cutter head receptacle (9) includes the annular base (91) being fixed on handle of a knife (1) and is stored up along the cutter head that handle of a knife (1) slides up and down Portion (92) is deposited, the annular base (91) coordinates with cutter head storage unit (92) elastic guide.

5. screwdriver according to claim 4, it is characterised in that：The cutter head storage unit (92) is set as circular cylinder, The peripheral direction of the cutter head storage unit (92) be provided with it is multiple deposit tool bore (921), deposit the opposite annular of tool bore (921) with described Removably it is connected with cutter head (3) at pedestal (91).

6. screwdriver according to claim 4, it is characterised in that：It is provided on the annular base (91) and is stored with cutter head The annular groove (911) of portion (92) clearance fit, the annular groove (911) pass through spring (93) and cutter head storage unit (92) phase Even.

7. screwdriver according to claim 6, it is characterised in that：The handle of a knife (1) along its length on be provided with and lead To block (11), the guide groove (922) being slidably matched with the guide pad (11) is provided on the inside of the cutter head storage unit (92).

8. according to the screwdriver described in claim 4~7 any one, it is characterised in that：The handle of a knife (1) is set as ladder Axis, including section (12) and diameter are relatively large in diameter compared with segment (13), the diameter is solid compared with segment (13) and the annular base (91) Fixed to be connected, the cutter head storage unit (92) connect with being relatively large in diameter section (12) and slide up and down.

9. screwdriver according to claim 8, it is characterised in that：The lower end of the annular base (91) is provided with patch type LED (10), control switch (14) is provided on the handle of a knife (1), and the control switchs (14) and passes through regulated power supply (5) and patch Formula LED (10) is connected.

10. screwdriver according to claim 9, it is characterised in that：It is additionally provided with and the adjustable electric in the handle of a knife (1) The charging circuit of source (5) connection, the end set of the handle of a knife (1) have the USB charge ports (15) being connected with charging circuit.