CN201437226U

CN201437226U - Charging type screwdriver

Info

Publication number: CN201437226U
Application number: CN200920124598XU
Authority: CN
Inventors: 翁志荣
Original assignee: ZHONGGANG TOOLS CO Ltd NINGBO
Current assignee: ZHONGGANG TOOLS CO Ltd NINGBO
Priority date: 2009-07-10
Filing date: 2009-07-10
Publication date: 2010-04-14
Anticipated expiration: 2019-07-10

Abstract

The utility model relates to a charging type screwdriver which comprises a screw clamping head, a connecting head, a connecting tooth rod, a power supply control switch and a handle. The charging type screwdriver further comprises a charging device, a three-gear speed changing rotor and a speed regulating switch, wherein the charging device is arranged below the electric screwdriver handle, the speed regulating switch can regulate the speed of the three-gear speed changing rotor, the three-gear speed changing rotor is connected with the connecting tooth rod, the connecting tooth rod is connected with the screw clamping head by the connecting head, and the speed regulating switch is connected with the three-gear speed changing rotor. The charging type screwdriver which adopts the above structure not only can output high, medium and low speed, but also can be used under the conditions of no power or a power wire cannot be touched, thereby widening the using range of the electric screwdriver.

Description

Rechargeable screw driver

Technical field:

The utility model relates to field of power tools, specifically is a kind of rechargeable screw driver.

Background technology:

At present; the rechargeable screw driver of prior art has charging device; rechargeable screw driver also can be used in the place that non-transformer or power line can't touch; enlarged the scope of application of electric screw driver; but this rechargeable screw driver can only be finished the action of tighten the screws and loosening screw with single rotary speed; therefore run into following problem through regular meeting: 1; when screw diameter bigger; and the screwdriver velocity of rotation is when very fast; it is curved that screw is twisted; 2; sometimes need the workpiece of screw tightening harder, if the too fast workpiece that may make of screwdriver rotary speed breaks.A kind of electric screw driver of prior art can export soon, in, slow three kinds of different rotary speeies, but this screwdriver can not use under the non-transformer condition or the place that can't touch of power line, makes the scope of application of electric screw driver be restricted.

The utility model content:

The technical problems to be solved in the utility model is, overcomes existing technological deficiency, provide a kind of exportable fast, in, the rechargeable screw driver of slow three kinds of friction speeds.

Technical solution of the present utility model is, a kind of rechargeable screw driver with following structure is provided: it comprises the screw chuck, and connector connects ratch, power control switch, handle, it also comprises the charging device that is installed in electric screw driver handle below, three class gear shift rotor, can regulate the speed-regulating switch of three class gear shift spinner velocity, wherein the three class gear shift rotor be connected ratch and connect, connect ratch and be connected with the screw chuck by connector, speed-regulating switch is connected with the three class gear shift rotor.

Described charging device comprises inserted sheet, inserted sheet holder, battery pack, charger case, described inserted sheet is fixed on the inserted sheet holder, described inserted sheet, inserted sheet holder, battery pack all are placed in the charger case, described inserted sheet is electrically connected with battery pack, and described battery pack is electrically connected with the power control switch of rechargeable screw driver.

Described three class gear shift rotor comprise screw, compression spring, setscrew nut, Zuo Gai, silicon steel sheet and coil, about two sour jujube seats, about two groups of very heavy springs of size, about two groups of inside and outside ratchets, about two speed governing covers, central shaft, center push rod, central gear, sun gear, inner spinous ring, speed governing push rod; There is screw thread at described central shaft two ends, be fixed on the screwdriver by two setscrew nuts, two speed governing covers are equipped with through hole about described, it is spacing on central shaft with two speed governing covers that two speed governing alignment pins pass the through hole that speed governing puts respectively, make speed governing cover and central shaft axial sliding fit, be shaped on through hole in the described central shaft, wherein through hole is shaped on screw thread for left front section, threaded engagement in described screw and the central shaft through hole will be compressed spring and be encapsulated in the through hole, in the described center push rod centering shaft through-hole, right back section of described speed governing push rod centering shaft through-hole; The outside stage casing of described central shaft is shaped on gear, and described three sun gear gears all are engaged with, and three sun gear gears are fixed in the trisection through hole of being located on the sun gear by three sun gear gear pins; Described inner spinous ring places the sun gear outside, two equal end face is provided with groove, about described two groups of inside and outside ratchets be positioned over respectively sun gear about, and about an end face of inside and outside ratchet boss structure is all arranged, boss structure and the groove on the inner spinous ring about described on the inside and outside ratchet are engaged, and about left and right sides handle ratchet wheel is contained in respectively in the outer ratchet, described left right ratchet seat all is shaped on bearing, described steel ball row place left right ratchet seat bearing, described left right ratchet seat alignment pin and about big or small very heavy spring be installed in respectively in the left right ratchet seat, described left right ratchet seat is installed in silicon steel sheet and the coil, described left ratchet seat left part is shaped on gear, and described left lid is threaded with silicon steel sheet and coil.

Described three class gear shift rotor and the connection that is connected ratch are meant the gear and the gears engaged that is connected ratch of left ratchet seat front portion in the three class gear shift rotor.

Described speed-regulating switch is connected the speed governing push rod that is meant in the three class gear shift rotor and is connected with speed-regulating switch with the three class gear shift rotor.

Described connection ratch is connected with the screw chuck by connector and is meant that the gear that connects the ratch front portion is connected with gear on the connector, and connector is fixedlyed connected with the screw clamp head thread.

After adopting above structure, compared with prior art, advantage of the present utility model is: under the effect of three class gear shift rotor, the exportable three kinds of speed of motor, thereby drive driver bit produce fast, in, slow three kinds of different velocities of rotation, the operator can select proper speed according to the hardness of screw and workpiece, be difficult for to twist the effect that curved or damage and workpiece are difficult for breaking thereby reach screw.And owing to comprise charging device, electric screw driver also can be used in the place that non-transformer condition or power line can't touch, enlarge the scope of application of electric screw driver.

Description of drawings:

Accompanying drawing 1 is the structure cutaway view of the utility model rechargeable screw driver,

Accompanying drawing 2 is structure explosive views of three class gear shift rotor of the present invention,

Wherein, 1, the screw chuck, 2, connector, 3, connect ratch, 4, power control switch, 5, charging device, 5.1, inserted sheet, 5.2, the inserted sheet holder, 5.3, battery pack, 5.4, charger case, 6, the three class gear shift rotor, 6.1, screw, 6.2, the compression spring, 6.3, setscrew nut, 6.4, left side lid, 6.5, silicon steel sheet and coil, 6.6, left ratchet seat, 6.7, the steel ball row, 6.8, the left ratchet seat alignment pin, 6.9, the big or small very heavy spring in a left side, 6.10, the outer ratchet in a left side, 6.11, left side handle ratchet wheel, 6.12, left side speed governing cover, 6.13, center push rod, 6.14, central shaft, 6.15, the speed governing alignment pin, 6.16, right speed governing cover, 6.17, the sun gear gear, 6.18, sun gear gear pin, 6.19, sun gear, 6.20, inner spinous ring, 6.21, right outer ratchet, 6.22, right outer ratchet, 6.23, right big or small very heavy spring, 6.24, the right ratchet seat alignment pin, 6.25, right ratchet seat, 6.26, the speed governing push rod, 7, speed-regulating switch, 8, handle.

The specific embodiment:

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

As shown in the figure: the utility model provides a kind of rechargeable screw driver with following structure: it comprises screw chuck 1, connector 2, connect ratch 3, power control switch 4, handle 8, it also comprises the charging device 5 that is installed in the screw driver handle below, be located at the three class gear shift rotor 6 in the motor, can regulate the speed-regulating switch 7 of three class gear shift spinner velocity, wherein three class gear shift rotor 6 be connected ratch 3 and connect, connect ratch 3 and be connected with screw chuck 1 by connector 2, speed-regulating switch 7 is connected with three class gear shift rotor 6.

Described charging device 5 comprises inserted sheet 5.1, inserted sheet holder 5.2, battery pack 5.3, charger case 5.4, described inserted sheet 5.1 is fixed on the inserted sheet holder 5.2, described inserted sheet 5.1, inserted sheet holder 5.2, battery pack 5.3 all are placed in the charger case 5.4, described inserted sheet 5.1 is electrically connected with battery pack 5.3, and described battery pack 5.3 is electrically connected with the power control switch 4 of rechargeable screw driver.

Described three class gear shift rotor 6 comprise screw 6.1, compression spring 6.2, setscrew nut 6.3, left side lid 6.4, silicon steel sheet and coil 6.5, about two sour jujube seats 6.6,6.25, about two groups of very heavy springs 6.9,6.23 of size, about two groups of inside and outside ratchets 6.10,6.11,6.21,6.22, about two speed governing covers 6.12,6.16, central shaft 6.14, center push rod 6.13, central gear 6.17, sun gear 6.19, inner spinous ring 6.20, speed governing push rod 6.26; Described central shaft 6.14 two ends are shaped on screw thread, be fixed on the screwdriver by two setscrew nuts 6.3, two speed governing covers 6.12 about described, 6.16 be equipped with through hole, two speed governing alignment pins 6.15 pass speed governing cover 6.12 respectively, 6.16 last through hole is with two speed governing covers 6.12,6.16 it is spacing on central shaft 6.14, make speed governing cover 6.12,6.16 with central shaft 6.14 axial sliding fits, be shaped on through hole in the described central shaft, wherein through hole is shaped on screw thread for left front section, described screw 6.1 will compress spring 6.2 with the threaded engagement in central shaft 6.14 through holes and be encapsulated in the through hole, compression spring 6.2 can make the speed governing alignment pin reset under control, in described center push rod 6.13 centering axles 6.14 through holes, right back section of described speed governing push rod 6.26 centering axles 6.14 through holes; Described central shaft 6.14 outside stage casings are shaped on gear, and described three sun gear gears 6.17 all are engaged with, and three sun gear gears 6.17 are fixed in the trisection through hole of being located on the sun gear 6.19 by three sun gear gear pins 6.18; Described inner spinous ring 6.20 places sun gear 6.19 outsides, two end face is equipped with groove, two groups of inside and outside ratchets 6.10 about described, 6.11,6.21,6.22, be positioned over respectively sun gear 6.19 about, and about inside and outside ratchet 6.10,6.11,6.21,6.22 an end face boss structure is all arranged, inside and outside ratchet 6.10 about described, 6.11,6.21,6.22 on boss structure and the groove on the inner spinous ring 6.20 engaged, and left and right sides handle ratchet wheel 6.11,6.21 outer ratchet 6.10 about being contained in respectively, 6.22 in, described left right ratchet seat 6.6,6.25 all be shaped on bearing, described steel ball row 6.7 place left right ratchet seat bearing 6.6,6.25 in, described left right ratchet seat alignment pin 6.8,6.24 and about big or small very heavy spring 6.9,6.23 be installed in left right ratchet seat 6.6 respectively, 6.25 in, described right ratchet seat 6.25 is installed in silicon steel sheet and the coil 6.5, and it is fixedly connected with it, described left ratchet seat 6.6 left parts are shaped on gear, and described left side lid 6.4 is threaded with silicon steel sheet and coil 6.5.

Described three class gear shift rotor 6 and the connection that is connected ratch 3 are meant the gear and the gears engaged that is connected ratch 3 of left ratchet seat 6.6 left parts in the three class gear shift rotor 6.Adopt this connected mode simple in structure, stable.

Described speed-regulating switch 7 is connected the speed governing push rod 6.26 that is meant in the three class gear shift rotor 6 and is connected with speed-regulating switch 7 with three class gear shift rotor 6.

Described connection ratch 3 is connected with screw chuck 1 by connector 2 and is meant that the gear that connects ratch 3 front portions is connected with gear on the connector 2, and connector 2 is fixedlyed connected with screw chuck 1 screw thread.

Operation principle of the present invention is: by 5.3 chargings of 5.1 pairs of battery pack of inserted sheet, make battery pack 5.3 keep abundant electric power, battery pack 5.3 is electrically connected with the power control switch 4 of screwdriver, when rechargeable screw driver when power supply is far away, can carry out work by battery pack 5.3 power supplies.

When opening power gauge tap 4, silicon steel sheet and coil 6.5 energisings and rotation, drive left side lid 6.4 and right ratchet seat 6.25 rotations, gear drive by inside and outside ratchet 6.10,6.11,6.21,6.22, central gear 6.17 and inner spinous ring 6.20 cooperates, make left ratchet seat 6.6 rotate synchronously, be shaped on the cingulum ratch 3 that is dynamically connected by left ratchet seat 6.6 front portions, connecting ratch 3 and cooperates with screw chuck 1, thereby drive screw chuck 1 rotates by connector 2.

The screwdriver speed change is outwards to be turned by speed-regulating switch 4, make speed governing push rod 6.26 outwards flick, speed governing alignment pin 6.15 drives right speed governing cover 6.16 motions under 6.2 effects of compression spring, owing to thereby the effect of center push rod 6.13 makes the speed governing cover 6.12 on the left side also simultaneously along with the motion campaign by speed governing cover 6.16, under the motion of speed governing cover 6.12,6.16 and big or small very heavy spring 6.9,6.23 cooperate, obtain speed change, thereby obtain different screw chuck rotating speeds.

Because under the effect of very heavy spring, very heavy during with the interlock of sour jujube circle, the sour jujube circle is rotated, but when making the opposite spin of sour jujube circle not transmission speed and power, thereby the generation skidding; When very heavy relieving, the sour jujube circle then can not rotate, and also can produce skidding, when speed governing cover 6.12,6.16 is on the central shaft 6.14 the through hole upper end position, big very heavy and left handle ratchet wheel 6.11 interlocks in a left side, right big very heavy and right outer ratchet 6.22 interlocks, be slow shelves transmission speed this moment.When speed governing cover 6.12,6.16 is on the central shaft 6.14 the through hole centre position, big very heavy and preceding handle ratchet wheel 6.11 interlocks in a left side, the big very heavy relieving in back is middle-grade transmission speed at this moment.When speed governing cover 6.12,6.16 is on the central shaft 6.14 the through hole lower end position, about work energetically that jin is complete to be decontroled, be fast grade transmission speed this moment.Concrete drive connection is as follows:

1, the transmission of slow shelves: silicon steel sheet and coil 6.5 drive right ratchet seat 6.25 rotations in the rotor, right big very heavy and right outer ratchet 6.22 interlocks, right little very heavy skidding, then right ratchet seat 6.25 drives right outer ratchet 6.22 rotations, passing through inner spinous ring 6.20, the transmission of central gear 6.19 cooperates, drive the inside and outside ratchet 6.10 in a left side, 6.11 rotate, and big very heavy and left handle ratchet wheel 6.11 interlocks in left side this moment, little very heavy and left outer ratchet 6.10 interlocks in a left side, but because very heavy effect, the outer ratchet 6.10 in a left side skids, and left handle ratchet wheel 6.11 rotates, thereby left handle ratchet wheel 6.11 drives the transmission of the slow shelves of left ratchet seat 6.6 outputs, again by connecting the transmission of ratch 3, makes the slow shelves of screw chuck 1 output speed.

2, middle-grade transmission: silicon steel sheet and coil 6.5 drive right ratchet seat 6.25 rotations in the rotor, right big very heavy relieving, right outer ratchet 6.22 skids, right little very heavy and right handle ratchet wheel 6.21 interlocks, then right ratchet seat 6.25 drives right handle ratchet wheel 6.21 transmissions, passing through inner spinous ring 6.20, the transmission of central gear 6.19 cooperates, drive the inside and outside ratchet 6.10 in a left side, 6.11 rotate, and big very heavy and left handle ratchet wheel 6.11 interlocks in left side this moment, the little very heavy relieving in a left side, because very heavy effect, the outer ratchet 6.10 in a left side skids, and left handle ratchet wheel 6.11 rotates, thereby left handle ratchet wheel 6.11 drives the equal rotating speed of left ratchet seat 6.6 outputs, by connecting the transmission of ratch 3, make the middle-grade speed of screw chuck 1 output again.

3, the transmission of fast shelves: silicon steel sheet and coil 6.5 drive right ratchet seat 6.25 rotations in the rotor, right big very heavy relieving, right outer ratchet 6.22 skids, right little very heavy and right handle ratchet wheel 6.21 interlocks, then right ratchet seat 6.25 drives right handle ratchet wheel 6.21 transmissions, passing through inner spinous ring 6.20, the transmission of central gear 6.19 cooperates, drive the inside and outside ratchet 6.10 in a left side, 6.11 rotate, and the big very heavy relieving in left side this moment, little very heavy and left outer ratchet 6.10 interlocks in a left side, but because very heavy effect, left side handle ratchet wheel 6.11 skids, and the outer ratchet 6.10 in a left side rotates, thereby the outer ratchet 6.10 in a left side drives the transmission of the fast shelves of left ratchet seat 6.6 outputs, by connecting the transmission of ratch 3, make the fast shelves of screw chuck 1 output speed again.

Operator selectable is selected different driver bits and is installed on the screw chuck 1, is used for tightening or loosening different screw.

Claims

1. rechargeable screw driver, it comprises screw chuck (1), connector (2), connect ratch (3), power control switch (4), it is characterized in that: it also comprises the charging device (5) that is installed in the screw driver handle below, be located at the three class gear shift rotor (6) in the motor, can regulate the speed-regulating switch (7) of three class gear shift spinner velocity, wherein three class gear shift rotor (6) be connected ratch (3) and connect, connect ratch (3) and be connected with screw chuck (1) by connector (2), speed-regulating switch (7) is connected with three class gear shift rotor (6).

2. rechargeable screw driver according to claim 1, it is characterized in that: described charging device (5) comprises inserted sheet (5.1), inserted sheet holder (5.2), battery pack (5.3), charger case (5.4), described inserted sheet (5.1) is fixed on the inserted sheet holder (5.2), described inserted sheet (5.1), inserted sheet holder (5.2), battery pack (5.3) all are placed in the charger case (5.4), described inserted sheet (5.1) is electrically connected with battery pack (5.3), and described battery pack (5.3) is electrically connected with the power control switch (4) of rechargeable screw driver.

3. rechargeable screw driver according to claim 1 is characterized in that: described three class gear shift rotor (6) comprises screw (6.1), compression spring (6.2), setscrew nut (6.3), left side lid (6.4), silicon steel sheet and coil (6.5), about two sour jujube seats (6.6,6.25), about two groups the size very heavy springs (6.9,6.23), about two groups of inside and outside ratchets (6.10,6.11,6.21,6.22), about two speed governing covers (6.12,6.16), central shaft (6.14), center push rod (6.13), central gear (6.17), sun gear (6.19), inner spinous ring (6.20), speed governing push rod (6.26); Described central shaft (6.14) two ends are shaped on screw thread, be fixed on the screwdriver by two setscrew nuts (6.3), two speed governing covers (6.12 about described, 6.16) be equipped with through hole, two speed governing alignment pins (6.15) pass speed governing cover (6.12 respectively, 6.16) go up through hole with two speed governing covers (6.12,6.16) spacing on central shaft (6.14), make speed governing cover (6.12,6.16) and central shaft (6.14) axial sliding fit, be shaped on through hole in the described central shaft, wherein through hole is shaped on screw thread for left front section, described screw (6.1) will compress spring (6.2) with the threaded engagement in central shaft (6.14) through hole and be encapsulated in the through hole, in described center push rod (6.13) centering axle (6.14) through hole, right back section of described speed governing push rod (6.26) centering axle (6.14) through hole; The outside stage casing of described central shaft (6.14) is shaped on gear, and described three sun gear gears (6.17) all are engaged with, and three sun gear gears (6.17) are fixed in the trisection through hole of being located on the sun gear (6.19) by three sun gear gear pins (6.18); Described inner spinous ring (6.20) places sun gear (6.19) outside, two end face is equipped with groove, two groups of inside and outside ratchets (6.10 about described, 6.11,6.21,6.22), be positioned over respectively sun gear (6.19) about, and about inside and outside ratchet (6.10,6.11,6.21,6.22) an end face boss structure is all arranged, inside and outside ratchet (6.10 about described, 6.11,6.21,6.22) on boss structure and the groove on the inner spinous ring (6.20) engaged, and left and right sides handle ratchet wheel (6.11,6.21) be contained in respectively about outer ratchet (6.10,6.22) in, described left right ratchet seat (6.6,6.25) all be shaped on bearing, described steel ball row (6.7) place left right ratchet seat bearing (6.6,6.25) in, described left right ratchet seat alignment pin (6.8,6.24) and about big or small very heavy spring (6.9,6.23) be installed in left right ratchet seat (6.6 respectively, 6.25) in, described right ratchet seat (6.25) is installed in silicon steel sheet and the coil (6.5), and it is fixedly connected with it, described left ratchet seat (6.6) left part is shaped on gear, and described left side lid (6.4) is threaded with silicon steel sheet and coil (6.5).

4. rechargeable screw driver according to claim 1, it is characterized in that: described three class gear shift rotor (6) comprises the anterior gear and the gears engaged that is connected ratch (3) of left ratchet seat (6.6) in the three class gear shift rotor (6) with the connection that is connected ratch (3), and described three class gear shift rotor (6) is connected with speed-regulating switch (7) with comprising the speed governing push rod (6.26) in the three class gear shift rotor (6) being connected of speed-regulating switch (7).