CN102079060B

CN102079060B - Power tool

Info

Publication number: CN102079060B
Application number: CN2009102512766A
Authority: CN
Inventors: 张士松; 顾育明; 李祥庆
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2009-12-01
Filing date: 2009-12-01
Publication date: 2012-04-25
Anticipated expiration: 2029-12-01
Also published as: CN102079060A

Abstract

The invention relates to a power tool which comprises a shell, a motor, a motor shaft, a first output shaft, a first transmission device, a second output shaft and a second transmission device, wherein the motor shaft is arranged in the shell and outputs rotation movement; the first output shaft extends from the shell; the first transmission device is connected with the motor shaft and the first output shaft and converts the rotation movement of the motor shaft into the swinging movement of the first output shaft around the axis line per se; the second output shaft extends from the shell; the second transmission device is connected with the motor shaft and the second output shaft and transmits the rotation movement of the motor shaft to the rotation movement of the second shaft around the axis line per se; and the motor drives the first transmission device and the second transmission device at the same time, and the first output shaft and the second output shaft respectively make independent movement. In the scheme, the first output shaft and the second output shaft are simultaneously connected with the motor shaft, so that the power tool realizes swinging output and rotation output at the same time, and the power tool has simple structure.

Description

Power tool

Technical field

The present invention relates to a kind of hand-held type power tool, especially have hand-held type power tool of swing output.

Background technology

Hand-held type power tool drives output shaft by motor usually and produces different motions, like rotation, back and forth, action such as swing, and then drive the working head that is connected on the output shaft and carry out corresponding work, as bore, saw, cut, mill etc.Common electric drill, electric circular saw rotatablely move owing to output shaft drives the working head generation, thereby are that the typical case who rotates type power tool represents; Sweep-saw, reciprocating saw then produce reciprocating motion because output shaft drives saw blade, thereby are typical case's representatives of back and forth type power tool; The Multi Role Aircraft of FEIN and Bosch company then produces swing because output shaft self centers on axial line, thereby is that the typical case who swings type power tool represents.

Along with making rapid progress of science and technology, one of technical development road of power tool is exactly the integrated of height, can on an instrument, realize multiple function; In particular, be exactly promptly can realize the motion that certain is single on this instrument, like the rotation type games; Also can realize the motion of other types, like reciprocal type or swing type games, the user only need change the different working head; Just can between these motion modes, switch back and forth, make things convenient for application aims to reach.

In the present swing class power tool; Because output shaft under the driving of motor, transmits moment of torsion through the eccentric wheel transmission mechanism, only can realize that output shaft centers on axial line and does oscillating motion; For the current general power tool that can realize multiple function, it is single that function shows slightly.

U.S. Pat 5441450A discloses a kind of machine that has both swing and rotatablely move, and it also is provided with a movably bevel pinion in housing on the basis of swing mechanism, and corresponding bevel gear also is provided with a bevel gear wheel on output shaft simultaneously.When two bevel gears of size did not produce engagement, swing mechanism was communicated with, and rotating mechanism breaks off, and machine is done oscillating motion at this moment.When two bevel gears of size produced engagement, swing mechanism broke off, and rotating mechanism is communicated with, and rotate this opportunity.Thereby,, just can between two kinds of motion modes, switch through moving of bevel pinion.

But the technique scheme structure is comparatively complicated, needs artificial handover operation simultaneously, uses also not convenient.

Therefore, prior art is necessary further improvement in fact.

Summary of the invention

The object of the present invention is to provide a kind of power tool, when realizing swing output and two kinds of way of outputs of rotation output, simple structure is provided.

For realizing above-mentioned purpose, the invention provides a kind of power tool, comprising: housing; Motor, be arranged in the housing and have the motor drive shaft that output rotatablely moves; First output shaft extends in housing; First transmission device connects the motor drive shaft and first output shaft, and converts rotatablely moving of said motor drive shaft the oscillating motion around himself axial line of first output shaft into; Second output shaft extends in housing; Second transmission device; Connect the motor drive shaft and second output shaft; And rotatablely moving of said motor drive shaft is passed to the rotatablely moving around himself axial line of second output shaft; Said motor drives first transmission device and second transmission device simultaneously, and said first output shaft and second output shaft be independent motion respectively.

Preferably,

The axial line of said second output shaft overlaps with the axial line of first output shaft.

The axis parallel of the axial line of said second output shaft and first output shaft.

The axial line oblique of the axial line of said second output shaft and motor drive shaft.

Said second transmission device comprises first bevel gear, with second bevel gear of first bevel gear engagement and be connected motor drive shaft and the jackshaft of first bevel gear.

Said first output shaft is a hollow structure; And the position towards motor drive shaft is provided with opening; Described first bevel gear is arranged in the said opening; Said second bevel gear is arranged in first output shaft by the ball bearing that is arranged in first output shaft, and said second output shaft is connected with said second bevel gear.

Be provided with oiliness bearing in said first output shaft, said second output shaft is supported by said oiliness bearing.

The bearing of trend of said first output shaft and second output shaft is opposite.

Said first output shaft is identical with the bearing of trend of second output shaft.

Said first output shaft is a solid construction, and said second transmission device and second output shaft are between the motor drive shaft and first output shaft.

In this programme first output shaft is connected motor drive shaft simultaneously with second output shaft, has realized that power tool is done swing output simultaneously and rotation is exported, and possessed simple structure.

Description of drawings

Fig. 1 is the generalized section of medium power instrument of the present invention.

Fig. 2 is the generalized section of second embodiment of said power tool.

Fig. 3 is the generalized section of the 3rd embodiment of said power tool.

Related elements reference numeral in the diagram is following:

10, housing 11, motor 12, motor drive shaft

13, first output shaft 14, bearing 15, bearing

16, first bevel gear 17,17 ', jackshaft 18, bearing

19, second bevel gear 20, bearing 21, second output shaft

101, opening 131, opening axial line X

Axial line X1 axial line X2 axial line Y

The specific embodiment

Below in conjunction with accompanying drawing and specific embodiment the present invention is done further detailed description.

See also Fig. 1, a kind of power tool possesses swing output and two kinds of way of outputs of rotation output simultaneously.Said power tool comprises the housing 10 that roughly is the angle setting; The rear end (the figure left side is defined as the rear end) that is arranged in housing 10 is provided with the motor 11 that power is provided; This motor 11 has motor drive shaft 12; In the front end of housing 10, extending along direction straight down has first output shaft 13, and described first output shaft 13 is through being arranged on inner two bearings, 14,15 fixing being installed in the housing 10 of housing 10.Wherein, bearing 14 adopts the less oiliness bearing of volume, and bearing 15 adopts the bigger ball bearing of volume.Between the motor drive shaft 12 and first output shaft 13, also be provided with a transmission device; Described first transmission device has adopted eccentric wheel that the swing instrument is used always in the industry and pull-fork assembly transmission scheme; In order to the oscillating motion that rotatablely moves and transform and be passed to first output shaft 13 with motor drive shaft 12 outputs, the axis that 13 swings of first output shaft are centered on is the axial line X of self.

Please continue to consult Fig. 1, described first output shaft 13 is a hollow structure, and on the position of motor drive shaft 12, also offers opening 131.Be arranged in opening 131 and be provided with first bevel gear 16,, between the two, also be connected with jackshaft 17 for the rotation torque with motor drive shaft 12 is passed on first bevel gear 16.Need to prove that the axial line Y of jackshaft 17 overlaps with the axial line of motor drive shaft 12, like this, first bevel gear 16 will rotate around axial line Y.

Inside at first output shaft 13; Also be provided with second bevel gear 19 through ball bearing 18; And

second bevel gear

19 and 16 engagements of first bevel gear; Thereby when motor drive shaft 12 rotation, rotation torque will be through jackshaft 17 being passed on first bevel gear 16, second bevel gear 19 successively, and second bevel gear 19 can be around axial line X rotation.

Inside at first output shaft 13; Also be provided with second output shaft 21 through oiliness bearing 20; One end of said second output shaft 21 is fixedly connected with second bevel gear 19; The other end then extends from the opening 101 that is arranged on the housing 10, and can do rotation output and use for the user connects the drill chuck (figure does not show) that rotates usefulness.

Through such mode, described power tool has comprised two output shafts, can divide other to produce two kinds of way of outputs, i.e. swing output and rotation output.When the user respectively after connecting swing working head and rotary drilling chuck on these two output shafts; Then can divide other to realize swing oscillating motion of working head and rotatablely moving of rotary drilling chuck; Thereby the application category of described power tool is enlarged, reach the purpose of multiple operation.

Need to prove that in first embodiment, described second output shaft 21 is along extending with first output shaft, 13 opposite directions; It can also be along extending with first output shaft, 13 identical directions, and promptly second output sleeve is located at the inside of first output shaft 13, but in use; Can produce blanketing because connect the working head of output shaft; Therefore the user is merely able to the two and selects one of which installment work head and use, and does oscillating motion as only selecting first output shaft, perhaps only selects second output shaft to rotate; Treat to change again after application finishes and use another output shaft, cause in operation not convenient.

Certainly, second output shaft 21 can also adopt other mounting means.See also Fig. 2; Second output shaft 21 here is positioned at the position near housing 10 rear ends with respect to axial line X; Specifically be that its axial line X1 is parallel with axial line X in the housing 10 between the motor drive shaft 12 and first output shaft 13, corresponding; The jackshaft 17 ' that is connected with first bevel gear 16 with motor drive shaft 12 is with respect to the jackshaft among first embodiment 17; Its length reduces, but rotation torque being passed on first bevel gear 16, second bevel gear 19 and second output shaft 21 successively still makes second output shaft 21 rotate around axial line X1.

Same; See also Fig. 3; Second output shaft 21 can also be the setting at angle of inclination with respect to axial line X; Promptly the extended line of the axial line X of the axial line X2 of second output shaft 21 and first output shaft 13 is oblique, and simultaneously, the axial line X2 of second output shaft 21 also is oblique with the axial line Y of motor drive shaft 12.

The above embodiments two and embodiment three provide a plurality of installation sites of second output shaft, and the operation hobby according to the user in practical application provides better operation sense.

In addition, since second output shaft not in the inside that is arranged at first output shaft, so first output shaft can adopt solid construction.

Claims

1. power tool comprises:

Housing (10);

Motor (11), be arranged in the housing (10) and have the motor drive shaft (12) that output rotatablely moves;

First output shaft (13) extends in housing (10),

First transmission device connects motor drive shaft (12) and first output shaft (13), and converts rotatablely moving of said motor drive shaft (12) oscillating motion that centers on himself axial line of first output shaft (13) into;

Second output shaft (21) extends in housing (10),

Second transmission device connects motor drive shaft (12) and second output shaft (21), and centers on rotatablely moving of himself axial line with what rotatablely moving of said motor drive shaft (12) was passed to second output shaft (21),

It is characterized in that:

Said motor (11) drives first transmission device and second transmission device simultaneously, and said first output shaft (12) and second output shaft (21) be independent motion respectively.

2. power tool as claimed in claim 1 is characterized in that: the axial line of said second output shaft (21) overlaps with the axial line (X) of first output shaft (13).

3. power tool as claimed in claim 1 is characterized in that: the axial line (X1) of said second output shaft (21) is parallel with the axial line (X) of first output shaft (13).

4. power tool as claimed in claim 1 is characterized in that: axial line (Y) oblique of the axial line (X2) of said second output shaft (21) and motor drive shaft (12).

5. power tool as claimed in claim 1; It is characterized in that: said second transmission device comprises first bevel gear (16), with second bevel gear (19) of first bevel gear (16) engagement and be connected motor drive shaft (12) and the jackshaft (17,17 ') of first bevel gear (16).

6. power tool as claimed in claim 5; It is characterized in that: said first output shaft (13) is a hollow structure; And be provided with opening (131) towards the position of motor drive shaft (12); Described first bevel gear (16) is arranged in the said opening (131), and said second bevel gear (19) is arranged on the interior ball bearing (18) of first output shaft (13) by one and is arranged in first output shaft (13), and said second output shaft (21) is connected with said second bevel gear (19).

7. power tool as claimed in claim 6 is characterized in that: be provided with oiliness bearing (20) in said first output shaft (13), said second output shaft (21) is supported by said oiliness bearing (20).

8. power tool as claimed in claim 7 is characterized in that: said first output shaft (13) is opposite with the bearing of trend of second output shaft (21).

9. power tool as claimed in claim 7 is characterized in that: said first output shaft (13) is identical with the bearing of trend of second output shaft (21).

10. power tool as claimed in claim 5 is characterized in that: said first output shaft (13) is a solid construction, and said second transmission device and second output shaft (21) are between motor drive shaft (12) and first output shaft (13).