CN105422752A - Double-speed electric tool capable of automatically switching rotating speed - Google Patents

Double-speed electric tool capable of automatically switching rotating speed Download PDF

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Publication number
CN105422752A
CN105422752A CN201610050582.3A CN201610050582A CN105422752A CN 105422752 A CN105422752 A CN 105422752A CN 201610050582 A CN201610050582 A CN 201610050582A CN 105422752 A CN105422752 A CN 105422752A
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CN
China
Prior art keywords
gear
output shaft
clutch
shaft
speed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610050582.3A
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Chinese (zh)
Other versions
CN105422752B (en
Inventor
徐飞好
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Polytron Technologies Inc in Zhengyang
Original Assignee
YONGKANG ZHENGDA INDUSTRIAL Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by YONGKANG ZHENGDA INDUSTRIAL Co Ltd filed Critical YONGKANG ZHENGDA INDUSTRIAL Co Ltd
Priority to CN201610050582.3A priority Critical patent/CN105422752B/en
Publication of CN105422752A publication Critical patent/CN105422752A/en
Application granted granted Critical
Publication of CN105422752B publication Critical patent/CN105422752B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H3/00Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/087Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25FCOMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/001Gearings, speed selectors, clutches or the like specially adapted for rotary tools
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/02Gearboxes; Mounting gearing therein
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/02Gearboxes; Mounting gearing therein
    • F16H57/023Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly

Abstract

The invention creatively discloses a double-speed electric tool capable of automatically switching a rotating speed. The double-speed electric tool comprises a box body (5), an intermediate cover (16), a first-stage gear (20), a second-stage gear shaft (21), a second-stage gear (22), a transitional shaft (14), a low-speed gear (13), a high-speed gear (6) and an output shaft (8), wherein the second-stage gear shaft (21) is arranged between the box body (5) and the intermediate cover (16); the first-stage gear (20) and the second-stage gear (22) are correspondingly fixed at two sides of the second-stage gear shaft (21); the output shaft (8) and the transitional shaft (14) are arranged at the same axis; the low-speed gear (13) is arranged on the transitional shaft (14); the high-speed gear (6) is arranged on the output shaft (8); the low-speed gear (13) and the high-speed gear (6) are connected by an engaging and disengaging gear; a motor output shaft (18) is meshed with the first-stage gear (20); the low-speed gear (13) is meshed with the second-stage gear shaft (21); the high-speed gear (6) is meshed with the second-stage gear (22). By adopting the structure, the double-speed electric tool disclosed by the invention has the advantages of compact structure, convenience in mounting, quick function transformation, good use effect, multiple functions by one machine and the like.

Description

The double-speed electric tool that rotating speed automatically switches
Technical field
The invention relates to a kind of hand held electric tool, particularly a kind of can with different operating head with the use of the double-speed electric tool that automatically switches of rotating speed.
Background technique
As everyone knows, the electric tool of different purposes needs different rotating speeds and different moments of torsion, changes electric tool rotating speed and all realized by speed control switch adjustment instrument input voltage in current domestic and international all electric tools.Therefore and inapplicable a tractor serves several purposes this mode equals electric tool input power because electric tool operating voltage reduces and declines, and simultaneously the moment of torsion of electric tool also declines to a great extent.For the deficiency of current this respect, everybody wishes that the input power of a kind of Novel electric tool electric tool when changing electric tool rotating speed does not change, and preferably can automatically identify that different operating head changes the rotating speed of electric tool by mounting type, guarantee the safe handling accomplishing electric tool, thus make this electric tool can reach the object of a tractor serves several purposes.For this reason, many manufacturers and scientific research institutions develop and develop, but not yet have comparatively satisfied product to come out so far.
Summary of the invention
In order to overcome the problems referred to above that existing electric tool exists, the double-speed electric tool that object is to provide a kind of simple and reasonable, quick for installation convenience, power and energy is fast, using effect good, the rotating speed of a tractor serves several purposes automatically switches of the invention.
The invention solves the problems of the technologies described above adopted technological scheme, it comprises casing, middle cover, one-level gear, secondary gear wheel shaft, secondary gear, transition axis, low speed gear, high gear, output shaft, described secondary gear wheel shaft is arranged between casing and middle cover rotationally, one-level gear and secondary gear correspondence are fixed on the both sides of secondary gear wheel shaft, transition axis is arranged in middle cover rotationally, output shaft is not only rotatable but also can axially movably be arranged on casing by clutch shaft bearing, output shaft and transition axis are arranged on the same axis, low speed gear is arranged on transition axis, high gear is arranged on output shaft rotationally, be connected by clutch mechanism between low speed gear with high gear, motor output shaft and one-level gears meshing, low speed gear engages with secondary gear wheel shaft, high gear engages with secondary gear.
The further scheme of the invention, described clutch mechanism comprises the output shaft clutch boss be arranged on output shaft, be arranged on the gears to engage and disengage boss on low speed gear, first spring, second spring, ball, output shaft clutch boss is provided with clutch fixture block, gears to engage and disengage boss is provided with the clutch draw-in groove matched with clutch fixture block, first spring housing is located on the output shaft between high gear and output shaft clutch boss, second spring and ball are arranged in the center hole of output shaft, transition axis is not only rotatable but also can axially movably be arranged in the center hole of output shaft by the second bearing, end face and the ball of transition axis are inconsistent.
The further scheme of the invention, the elastic force of the first described spring is greater than the elastic force of the second spring.
The further scheme of the invention, the output terminal of described output shaft is arranged with axle sleeve and by packing ring and jump ring location, the interior edge face of axle sleeve matches with clutch shaft bearing inner ring.
The further scheme of the invention, described high gear is provided with the clamping boss matched with clutch shaft bearing inner ring.
After adopting said structure, compared with prior art have the following advantages and effect: one is ensureing under the prerequisite that output power is constant, different working heads is installed and can exports different rotating speeds, exporting lower rotating speed and larger moment of torsion when installing drill chuck or polishing wheel, exporting higher rotating speed and less moment of torsion when installing grinding wheel or cutting blade.Two is automatically identify working head by mounting type and export different rotating speeds, guarantees electric tool use safety.Three is because a machine both can use as electric drill and buffing machine, can use again, thus realize the object of a tractor serves several purposes, and working head is changed simple and convenient as electric angle grinder and cutting machine.
Accompanying drawing explanation
Fig. 1 is the decomposition texture schematic diagram of the invention.
Fig. 2 is the cooperating structure schematic diagram of the invention.
Fig. 3 is that the invention is as cooperating structure schematic diagram during electric drill.
Fig. 4 be the invention as clutch mechanism during electric drill in conjunction with schematic diagram.
Fig. 5 is that the invention is as cooperating structure schematic diagram during electric angle grinder.
Fig. 6 is that the invention is separated schematic diagram as clutch mechanism during electric angle grinder.
Fig. 7 is that the invention is as cooperating structure schematic diagram during polishing.
Wherein, 1 jump ring, 2 packing rings, 3 axle sleeves, 4 clutch shaft bearings, 5 casings, 6 high gears, 7 first springs, 8 output shafts, 9 second springs, 10 balls, 11 second bearings, 12 jump rings, 13 low speed gears, 14 transition axises, 15 the 3rd bearings, 16 middle cover, 17 the 4th bearings, 18 motor output shafts, 19 the 5th bearings, 20 one-level gears, 21 secondary gear wheel shafts, 22 secondary gears, 23 jump rings, 24 the 6th bearings, 25 output shaft clutch boss, 26 clutch fixture blocks, 27 gears to engage and disengage boss, 28 clutch draw-in grooves, 29 drill chucks, 30 grinding wheels, 31 inner clip plates, 32 outer plates, 33 protective housings, 34 polishing wheels.
Embodiment
Shown in Fig. 1 and Fig. 2, for the specific embodiments of the double-speed electric tool that a kind of rotating speed of the invention automatically switches, it comprises casing 5, middle cover 16, one-level gear 20, secondary gear wheel shaft 21, secondary gear 22, transition axis 14, low speed gear 13, high gear 6, output shaft 8, described secondary gear wheel shaft 21 by the 6th bearing 24 and the 5th bearing rotationally correspondence be arranged between casing 5 and middle cover 16, one-level gear 20 and secondary gear 22 correspondence are fixed on the both sides of secondary gear wheel shaft 21 and are located by jump ring 23, transition axis 14 is arranged in middle cover 16 by the 3rd bearing 15 rotationally, output shaft 8 is not only rotatable but also can axially movably be arranged on casing 5 by clutch shaft bearing 4, output shaft 8 and transition axis 14 arrange on the same axis, low speed gear 13 both can rotate also can fix to be arranged on transition axis 14 and to be located by jump ring 12, high gear 6 is arranged on output shaft 8 rotationally, be connected by clutch mechanism between low speed gear 13 with high gear 6, motor output shaft 18 is arranged in middle cover 16 by the 4th bearing rotationally, motor output shaft 18 engages with one-level gear 20, low speed gear 13 engages with the gear shaft in the middle of secondary gear wheel shaft 21, high gear 6 engages with secondary gear 22.
For also realizing at a high speed and the conversion of low speed, described clutch mechanism comprises the output shaft clutch boss 25 be arranged on output shaft 8, be arranged on the gears to engage and disengage boss 27 on low speed gear 13, first spring 7, second spring 9, ball 10, output shaft clutch boss 25 is provided with clutch fixture block 26, gears to engage and disengage boss 27 is provided with the clutch draw-in groove 28 matched with clutch fixture block 26, first spring 7 is set on the output shaft 8 between high gear 6 and output shaft clutch boss 25, second spring 9 and ball 10 are arranged in the center hole of output shaft 8, transition axis 14 is not only rotatable but also can axially movably be arranged in the center hole of output shaft 8 by the second bearing 11, end face and the ball 10 of transition axis 14 are inconsistent.In order to ensure that high low speed is changed, the elastic force of the first described spring 7 is greater than the elastic force of the second spring 9.
In order to practical function conversion, the output terminal of described output shaft 8 is arranged with axle sleeve 3 and is located by packing ring 2 and jump ring 1, and the interior edge face of axle sleeve 3 matches with clutch shaft bearing 4 inner ring.Described high gear 6 is provided with the clamping boss matched with clutch shaft bearing 4 inner ring.
Fig. 3 be the invention as cooperating structure schematic diagram during electric drill, the screw thread of output shaft 8 fixes drill chuck 29.During work, motor output shaft 18 drives secondary gear wheel shaft 21 and secondary gear 22 to rotate by one-level gear 20, secondary gear wheel shaft 21 drives low speed gear 13 to rotate, secondary gear 22 drives high gear 6 to rotate, elastic force due to the first spring 7 is greater than the elastic force of the second spring 9, under the elastic force effect of the first spring 7, output shaft 8 moves axially and the clutch draw-in groove 28 of the clutch fixture block 26 on output shaft clutch boss 25 on gears to engage and disengage boss 27 is combined, as shown in Figure 4, output shaft 18 and low speed gear 13 are connected as a single entity, again because high gear 6 is arranged on output shaft 8 rotationally, so high gear 6 relative output shaft 18 under secondary gear 22 drives dallies, and low speed gear 13 drives output shaft 18 to rotate, output shaft 18 drives the work of drill chuck 29 low speed rotation, thus realize the function of electric drill.
Fig. 5 is that the invention is as cooperating structure schematic diagram during electric angle grinder, casing 5 is installed protective housing 33, inner clip plate 31 on output shaft 8 overlaps, inner clip plate 31 can only move axially can not rotate relative to output shaft 8, put grinding wheel 30 again, then be arranged on output shaft 8 screw thread with outer plate 32, in outer plate 32 screwing operations, because inner clip plate 31 is against on axle sleeve 3, output shaft 8 produces and moves axially and drive high gear 6 to move axially by output shaft clutch boss 25 after the elastic force overcoming the first spring 7, when outer plate 32 clamps grinding wheel 30 with inner clip plate 31, inner clip plate 31 and axle sleeve 3 clamp clutch shaft bearing 4 inner ring with high gear 6 and output shaft clutch boss 25 simultaneously and become to be integrated.Clutch fixture block 26 on now output shaft clutch boss 25 is separated with the clutch draw-in groove 28 on gears to engage and disengage boss 27, as shown in Figure 6.During work, motor output shaft 18 drives secondary gear wheel shaft 21 and secondary gear 22 to rotate by one-level gear 20, secondary gear wheel shaft 21 drives low speed gear 13 to dally, secondary gear 22 drives high gear 6 to rotate, high gear 6 drives output shaft 18 to rotate, output shaft 18 drives grinding wheel 30 high speed rotational operation, thus realizes the function of electric angle grinder.
Structure when structure when the invention uses as cutting machine function uses as electric angle grinder function with Fig. 5 with Fig. 6 is identical, no longer repeats at this.
Fig. 7 be the invention as cooperating structure schematic diagram during polishing, identical when its working principle uses as electric drill function with Fig. 3 with Fig. 4, now do not repeat at this.
The above; just an embodiment of the invention, not makes any pro forma restriction, on the technological scheme basis not departing from the invention to the invention; done simple modification, equivalent variations or modification, all fall into the protection domain of the invention.

Claims (5)

1. the double-speed electric tool of a rotating speed automatic switchover, it is characterized in that: comprise casing (5), middle cover (16), one-level gear (20), secondary gear wheel shaft (21), secondary gear (22), transition axis (14), low speed gear (13), high gear (6), output shaft (8), described secondary gear wheel shaft (21) is arranged between casing (5) and middle cover (16) rotationally, one-level gear (20) and secondary gear (22) correspondence are fixed on the both sides of secondary gear wheel shaft (21), transition axis (14) is arranged in middle cover (16) rotationally, output shaft (8) is not only rotatable but also can axially movably be arranged on casing (5) by clutch shaft bearing (4), output shaft (8) and transition axis (14) are arranged on the same axis, low speed gear (13) is arranged on transition axis (14), high gear (6) is arranged on output shaft (8) rotationally, be connected by clutch mechanism between low speed gear (13) with high gear (6), motor output shaft (18) engages with one-level gear (20), low speed gear (13) engages with secondary gear wheel shaft (21), high gear (6) engages with secondary gear (22).
2. the double-speed electric tool of rotating speed automatic switchover according to claim 1, it is characterized in that: described clutch mechanism comprises the output shaft clutch boss (25) be arranged on output shaft (8), be arranged on the gears to engage and disengage boss (27) on low speed gear (13), first spring (7), second spring (9), ball (10), output shaft clutch boss (25) is provided with clutch fixture block (26), gears to engage and disengage boss (27) is provided with the clutch draw-in groove (28) matched with clutch fixture block (26), first spring (7) is set on the output shaft (8) between high gear (6) and output shaft clutch boss (25), second spring (9) and ball (10) are arranged in the center hole of output shaft (8), transition axis (14) is not only rotatable but also can axially movably be arranged in the center hole of output shaft (8) by the second bearing (11), end face and the ball (10) of transition axis (14) are inconsistent.
3. the double-speed electric tool of rotating speed automatic switchover according to claim 2, is characterized in that: the elastic force of described the first spring (7) is greater than the elastic force of the second spring (9).
4. the double-speed electric tool of rotating speed automatic switchover according to claim 3, it is characterized in that: the output terminal of described output shaft (8) is arranged with axle sleeve (3) and by packing ring (2) and jump ring (1) location, the interior edge face of axle sleeve (3) matches with clutch shaft bearing (4) inner ring.
5. the double-speed electric tool of rotating speed automatic switchover according to claim 4, is characterized in that: described high gear (6) is provided with the clamping boss matched with clutch shaft bearing (4) inner ring.
CN201610050582.3A 2016-01-26 2016-01-26 The double-speed electric tool that rotating speed automatically switches Active CN105422752B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610050582.3A CN105422752B (en) 2016-01-26 2016-01-26 The double-speed electric tool that rotating speed automatically switches

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Application Number Priority Date Filing Date Title
CN201610050582.3A CN105422752B (en) 2016-01-26 2016-01-26 The double-speed electric tool that rotating speed automatically switches

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CN105422752A true CN105422752A (en) 2016-03-23
CN105422752B CN105422752B (en) 2018-05-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107470677A (en) * 2016-06-08 2017-12-15 南京德朔实业有限公司 Torsion exports instrument

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW338997U (en) * 1997-09-12 1998-08-21 Gan-Bao Xu The phase-switch gearing box for magnetic drill threading and ream system
CN102198532A (en) * 2011-05-09 2011-09-28 正阳实业投资有限公司 Device for automatically converting positive rotation and reverse rotation of electric drill
CN202129478U (en) * 2011-05-09 2012-02-01 正阳实业投资有限公司 Automatic switch device for forward and backward rotation of electric drill
CN202883892U (en) * 2012-10-24 2013-04-17 正阳实业投资有限公司 Portable cutting machine transmission mechanism
CN205298424U (en) * 2016-01-26 2016-06-08 正阳实业投资有限公司 Double speed electric tool of rotational speed automatic switch -over

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW338997U (en) * 1997-09-12 1998-08-21 Gan-Bao Xu The phase-switch gearing box for magnetic drill threading and ream system
CN102198532A (en) * 2011-05-09 2011-09-28 正阳实业投资有限公司 Device for automatically converting positive rotation and reverse rotation of electric drill
CN202129478U (en) * 2011-05-09 2012-02-01 正阳实业投资有限公司 Automatic switch device for forward and backward rotation of electric drill
CN202883892U (en) * 2012-10-24 2013-04-17 正阳实业投资有限公司 Portable cutting machine transmission mechanism
CN205298424U (en) * 2016-01-26 2016-06-08 正阳实业投资有限公司 Double speed electric tool of rotational speed automatic switch -over

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107470677A (en) * 2016-06-08 2017-12-15 南京德朔实业有限公司 Torsion exports instrument

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Address after: 321300 558 Yongkang East Road, Yongkang Economic Development Zone, Jinhua, Zhejiang

Patentee after: Polytron Technologies Inc in Zhengyang

Address before: 321300 Zhengyang City Industrial Investment Co., Ltd. 558 the Great Wall East Avenue, Yongkang Hardware Technology Industrial Park, Jinhua, Zhejiang

Patentee before: Yongkang Zhengda Industrial Co., Ltd.