CN104942770B

CN104942770B - Power tool

Info

Publication number: CN104942770B
Application number: CN201410118935.XA
Authority: CN
Inventors: 顾育明
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2014-03-27
Filing date: 2014-03-27
Publication date: 2019-03-29
Anticipated expiration: 2034-03-27
Also published as: CN104942770A

Abstract

The present invention provides a kind of power tool, including shell, the shell includes casing for accommodating motor and the handle connecting with the casing, the output shaft of the motor drives output rod movement by transmission mechanism, the output shaft has axis, the handle and the casing are slided along the extending direction of the axis to be coupled, the handle is equipped with control piece, the control piece and the motor are electrically connected by conducting wire, the shell is equipped with coiling apparatus, and the coiling apparatus is tensioned the conducting wire along the take-up direction of stringing lead.Can effectively regular conducting wire, prevent disorderly and unsystematic the influences handle of conducting wire with respect to casing sliding.

Description

Power tool

Technical field

The present invention relates to a kind of power tool, especially a kind of handle can be relative to the power tool of casing movement.

Background technique

It include the power tool of output end output rotary motion, such as electric drill, screwdriver in common power tool；And The power tool of output end output reciprocating motion, such as reciprocating saw, sweep-saw.

Existing power tool is typically only capable to that output end is made to export a kind of movement, as electric drill is only capable of output rotary motion；It is past Multiple saw is only capable of output reciprocating motion；But operator completes a certain work, when such as decorating house, generally requires to use a variety of Different power tools, the burden of consumer can be aggravated by individually buying these different power tools.

For this purpose, occurring different power tool adapters in the prior art to extend the use scope of power tool, such as For the reciprocal adapter that electric drill provides, which does not need motor, it is only necessary to and it include a set of reciprocator, the adapter Input terminal is connected with the drill bit of electric drill, and the rotary motion that drill bit inputs is converted to the reciprocal fortune of output end output by reciprocator It is dynamic, so that consumer only needs one electric drill of purchase and the reciprocal adapter of a lower price that is, having purchased an electric drill With a reciprocating saw, this mitigates the burden of consumer.

This power tool adds the combination of adapter, although reducing costs to alleviate the burden of consumer, by Driven in converter by the output end of power tool, motor of the output end of converter apart from power tool farther out, and operator It is difficult to control power tool and converter simultaneously, therefore the output of this combined adapter often less stable.

To solve the above problems, the applicant had submitted application number to China State Intellectual Property Office on 2 6th, 2013 For 201310047997.1 application for a patent for invention, which provides a kind of novel power tool, the power tool Including shell, the output rod for being contained in the intracorporal motor of shell, being driven by motor by transmission mechanism, transmission mechanism includes that movement becomes It changes planes structure, the operable driving output rod of motion changing mechanism be in the first motor pattern of output reciprocating motion and output rotates Second motor pattern of movement.Due to the exportable rotation of the output rod of the power tool and reciprocal two kinds of motor patterns, thus greatly The use scope of power tool has been widened greatly, and the power tool is same defeated by sets of transmission mechanism realization by motor Rod output rotation and reciprocal two kinds of motor patterns, so that output rod exportable stable rotation or reciprocating motion, facilitate operation.

The shell of the power tool includes the handle for accommodating the casing of motor and being at an angle of setting with casing, handle and shell It is wholely set, handle is fixed with respect to casing, and structure is simple, but is not accounted under power tool difference operating condition to handle position not Same demand, it is inconvenient for use, for example, power tool needs handle far from output rod, under the narrow operating condition of working space to keep away Exempting from handle influences output rod towards workpiece feeding；Under the very hard operating condition of workpiece, power tool needs handle close to output Bar, so that operator provides bigger active force for the feeding of output rod with smooth workpieces processing.Therefore, above-mentioned novel power Tool is not able to satisfy the different demands under different operating conditions to handle position, not convenient enough to the processing of workpiece.In addition to above-mentioned new Outside power tool, other handles power tool fixed with respect to casing also has identical problem.

Summary of the invention

To overcome the shortcomings of existing technologies, the problem to be solved by the invention is to provide a kind of power works convenient to use Tool, the handle of the power tool can be slided with respect to casing, to meet different operating conditions to the different demands of handle position.

To solve the above problems, the technical scheme is that

A kind of power tool, including shell, the shell include casing for accommodating motor and connect with the casing Handle, the output shaft of the motor drives output rod movement by transmission mechanism, and the output shaft has axis, the handle Mating is slided along the extending direction of the axis with the casing, the handle is equipped with control piece, the control piece and described Motor is electrically connected by conducting wire, and the shell is equipped with coiling apparatus, and the coiling apparatus is along the take-up direction of stringing lead The tight conducting wire.

Preferably, the coiling apparatus include with the housing into rotation mating for for the conducting wire winding on it around Terminal makes the wrapping post with the bias piece of the trend moved along the take-up direction wrapping post force.

Preferably, the rotary centerline of the wrapping post is perpendicular to the axis.

Preferably, at least one end of the wrapping post is axially extended with shaft, the shaft and the housing into rotation The wrapping post and the housing into rotation is coupled in mating.

Preferably, there is the wrapping post wall portion of hollow portion and the wrapping post to be equipped with through-hole, and the conducting wire is from described Hollow portion passes through the through-hole and is wrapped on the outer surface of the wrapping post.

Preferably, the coiling apparatus further includes the cover board being laterally extended respectively from the both ends of the wrapping post.

Preferably, the casing includes upper half shell and the lower half shell that is connected with handle, and the coiling apparatus is arranged described In lower half shell.

Preferably, the conducting wire is two strands, and the coiling apparatus includes the first spiral for being tensioned wherein one conducting wire respectively Device and the second coiling apparatus.

Preferably, the rotary centerline of first coiling apparatus and second coiling apparatus is overlapped.

Preferably, the transmission mechanism includes motion changing mechanism, described in the operable driving of motion changing mechanism Output rod is in the first motor pattern of output reciprocating motion and the second motor pattern of output rotary motion.

Compared with prior art, handle of the invention and casing sliding are coupled, and handle can be moved to different with respect to casing Position, thus meet different operating conditions to the different demands of handle position, it is easy to use.Meanwhile in the motor and handle in casing Control piece by conducting wire connect, it is low in cost.Furthermore the coiling apparatus along take-up direction tensioning conducting wire is equipped in shell, it can Effective regular conducting wire, prevents the disorderly and unsystematic influence handle of conducting wire from sliding with respect to casing.

Detailed description of the invention

The invention will be further described with embodiment with reference to the accompanying drawing.

Fig. 1 is the partial sectional view for the power tool that embodiment of the present invention provides, at this point, handle is with respect to casing positioned at the One position；

Fig. 2 is another partial sectional view of power tool shown in FIG. 1, at this point, handle is located at the second position with respect to casing；

Fig. 3 is the partial enlarged view of power tool part A shown in Fig. 1；

Fig. 4 is cross-sectional view of the power tool shown in FIG. 1 along the direction B-B, at this point, the locking piece of position holding mechanism is located at Latched position；

Fig. 5 is cross-sectional view of the power tool shown in FIG. 1 along the direction B-B, at this point, the locking piece of position holding mechanism is located at Releasing position.

Wherein,

100 power tool, 34 conducting wire, 50 locking piece

20 shell, 36 coiling apparatus, 52 elastic component

22 motor, 38 wrapping post, 54 sticking department

24 casing, 40 bias piece, 56 location hole

26 handle, 42 shaft, 58 transverse holes

28 output rod, 44 cover board, 60 operating knob

30 collet, 46 electrode slice

32 control piece, 48 position holding mechanism

Specific embodiment

Referring to Figure 1 and Fig. 2, the power tool 100 of present embodiment include shell 20, and shell 20 includes for accommodating horse Casing 24, the handle 26 that connect with casing 24 up to 22, the output shaft of motor 22 pass through transmission mechanism and output rod 28 are driven to move. The collet 30 of mountable work head (not shown) is fixedly connected on output rod 28.Power tool 100 is in use, motor 22 passes through Transmission mechanism, output rod 28, collet 30 drive work head movement to workpieces processing.

22 output shaft of motor has axis X-X, and output rod 28 has center line, in the present embodiment, 22 output shaft of motor The center line of axis X-X and output rod 28 is overlapped, so that power tool 100 is compact-sized.

Handle 26 and casing 24 are slided along the axis X-X extending direction of 22 output shaft of motor to be coupled.To meet different works To the different demands of power tool handle grip under condition, operator is facilitated to use.For example, as shown in Figure 1, handle 26 is with respect to casing 24 are moved to the first position being aligned with casing 24 far from one end of output rod 28, at this point, handle 26 is far from output rod 26, in sky Between narrow place can avoid handle 26 and influence output rod 28 feeding towards workpiece；As shown in Fig. 2, handle 26 is moved with respect to casing 24 The second position being aligned with casing 24 close to one end of output rod 28 is moved, at this point, handle 26 is close to output rod 28, to operate Person holds handle 26 and provides bigger active force for the feeding of output rod 28 with smooth workpieces processing.Certainly, in addition to above-mentioned first Outside position and the second position, handle 26 can be moved to respect to casing 24 other positions such as first position and the second position it is any in Between position to meet the different habits of different operating conditions, different operation person greatly facilitate the use of power tool.The present embodiment In, handle 26 and the angled setting of casing 24, it may occur to persons skilled in the art that, handle and casing extend in the same direction and also may be used.It is all It should all be included within the scope of protection of the present invention using the technical solution similar with the present embodiment.

Handle 26 is equipped with control piece 32, control piece 32 and motor 22 and is electrically connected by conducting wire 34, and the electrical connection of conducting wire 34 can Keep power tool 100 low in cost.For reasonable Arrangement conducting wire 34, the part of handle 26 and the opposite sliding of casing 24 is provided with aperture 35, conducting wire 34 passes through aperture 35 and connects control piece 32 and motor 22.In the present embodiment, control piece 32 is switch, art technology For personnel it is contemplated that other than switch, control piece 32 is other components, such as PCB control panel also may be used.

Incorporated by reference to Fig. 1 and Fig. 3, shell 20 is equipped with coiling apparatus 36, and coiling apparatus 36 is along the take-up side of stringing lead 34 To tensioning conducting wire 34.In handle with respect in casing sliding process, conducting wire is tensioned slightly always, prevents wire influence handle opposite Casing slides or prevents that conducting wire is extruded and fracture etc., to effectively regular conducting wire and improve conducting wire service life.

Coiling apparatus 36 include rotated with shell 20 mating for for the winding of conducting wire 34 wrapping post 38 on it, to coiling Column 38, which exerts a force, makes bias piece 40 of the wrapping post 38 with the trend moved along take-up direction.

In the present embodiment, perpendicular to the axis X-X of motor output shaft, wrapping post 38 rotates reality for the rotary centerline of wrapping post Existing take-up or unwrapping wire, occupy little space, can reduce the volume of power tool, are easy to use.Those skilled in the art can think It arrives, other than rotating with take-up or unwrapping wire, such as translation of other motion modes is also can be used in wrapping post and take-up or unwrapping wire also may be used.It is all It should all be included within the scope of protection of the present invention using the technical solution similar with the present embodiment.

In the present embodiment, bias piece 40 is torsional spring, it may occur to persons skilled in the art that, other than torsional spring, other energy are right Wrapping post also may be used along the bias piece of the direction of tightening force.

One end of wrapping post 38 is axially extended with shaft 42, it is preferred that shaft 42 is wholely set with wrapping post 38；Shell Body 20 is equipped with the cylindrical hole 43 being inserted into for shaft 42, and shaft 42 rotates in cylindrical hole 43 and makes wrapping post 38 and shell 20 Rotation mating.The present embodiment is preferred, and two ends of wrapping post 38 are axially extending shaft 42, is provided on shell 20 point With the cylindrical hole of each shaft rotation mating, take-up or put to keep wrapping post 38 reliable and stable relative to the rotation of shell 20 Line.It may occur to persons skilled in the art that cylindrical hole can also be arranged on wrapping post, cylindrical body is fixedly installed on shell, around The cylindrical hole of terminal is set in cylindrical body and wrapping post and housing into rotation is coupled.It is all to use the skill similar with present embodiment Art scheme should all be included within the scope of protection of the present invention.

The present embodiment is preferred, wrapping post 38 have hollow portion, and the wall portion of wrapping post 38 be equipped with through-hole, conducting wire 34 from around The hollow portion of terminal 38 passes through through-hole and is wrapped on 38 outer surface of wrapping post.Topology layout is reasonable, and coiling is convenient.The present embodiment It is furthermore preferred that due to shaft 42 from the end of wrapping post 38 extend, it is preferred that the inside of shaft 42 is also hollow, conducting wire 34 from turn The hollow portion of axis 42 and wrapping post 38 passes through through-hole and is wrapped on the outer surface of wrapping post 38.

Coiling apparatus 36 further includes the cover board 44 being laterally extended respectively from the both ends of wrapping post 38.Two cover boards 44 can incite somebody to action The conducting wire 34 being wrapped on wrapping post 38 constrains therebetween, to make conducting wire is regular to be wrapped on wrapping post 38.

Turning back to Fig. 1, casing 24 includes upper half shell and the lower half shell being connected with handle 26, and coiling apparatus 36 is arranged in lower half In shell.Preferably, the electrode slice 46 connecting with conducting wire 34 is provided on motor 22, coiling apparatus 36 is arranged in casing 24 and position In electrode slice 46 close to the side of handle 26.Up and down direction is determined with power tool position shown in Fig. 1, then coiling apparatus 36 The lower position of electrode slice 46 is set, so set, the relatively close motor 22 of coiling apparatus 36, motor 22 and coiling apparatus 36 Between conductor length it is shorter, coiling apparatus 36 is not required to the conducting wire between tightening motor 22 and coiling apparatus 36, and only needs to tighten Conducting wire between coiling apparatus 36 and control piece 32 mitigates the work load of coiling apparatus 36, keeps coiling apparatus 36 reliable It works and improves the service life.It may occur to persons skilled in the art that coiling apparatus 36 is arranged between handle 26 and casing 24 Other positions also may be used.It should be noted that casing includes upper half shell and the lower half shell that is connected with handle, which is not required for Half-shell and lower half shell be two individual parts and fixed by modes such as screws, and is only from relative positional relationship to machine Shell is divided.

In the present embodiment, the conducting wire for connecting motor and control piece is two strands, and the quantity of coiling apparatus is one, two strands of conducting wires It is tensioned by the same coiling apparatus, structure is simple, low in cost.It may occur to persons skilled in the art that the number of coiling apparatus Also may be configured as it is identical as the number of conducting wire, i.e., coiling apparatus include be tensioned respectively wherein one conducting wire the first coiling apparatus and Second coiling apparatus.It is non-interference to which each wire is tensioned by individual coiling apparatus, it can preferably be tensioned per share lead Line.Preferably, the first coiling apparatus and the setting of the second coiling apparatus axial overlap, rotary centerline is overlapped, specifically, first The rotary centerline of the wrapping post of coiling apparatus and the second coiling apparatus is overlapped, and rationally distributed, structure is simple.First coiling apparatus When overlapping with the second coiling apparatus, the two can be wholely set to and be shared inter panel, manufacture assembly device can simultaneously be saved Material cost.

Referring to Figure 1 and Fig. 2, position holding mechanism 48, position holding mechanism 48 are provided between handle 26 and casing 24 Keep handle 26 fixed with respect to casing 24 in predeterminated position.In the present embodiment, predeterminated position includes handle 26 and machine as shown in Figure 1 First position, handle 26 as shown in Figure 2 and the casing 24 of one end alignment of the shell 24 far from output rod 28 are close to output rod 28 The second position of one end alignment.

Fig. 4 and Fig. 5 are referred to, position holding mechanism includes the locking piece on one be arranged in casing 24 and handle 26 50, mating part on another in casing 24 and handle 26 is set, and locking piece 50 can be between latched position and releasing position Movement, as shown in figure 4, locking piece 50 and mating part are coupled, and handle 26 is maintained at default position with respect to casing 24 in latched position It sets；As shown in figure 5, locking piece 50 and mating part disengage in releasing position, handle 26 can be with respect to 24 activity of casing.Position is protected Holding mechanism 48 further includes the elastic component 52 compressed with locking piece 50, elastic component 52 to the force of locking piece 50 make locking piece 50 have with The trend of mating part mating.

The present embodiment is preferred, and locking piece 50 is arranged on handle 26 and has sticking department 54.Mating part is to be arranged in machine For the location hole 56 of 54 partial insertion of sticking department on shell 24, specifically, location hole 56 includes the axis along 22 output shaft of motor The first positioning hole and second location hole spaced apart being arranged on casing 24 on X-X extending direction, sticking department 54 are inserted into When first positioning hole, handle 26 is maintained at first position；When sticking department 54 is inserted into second location hole, handle 26 is maintained at second It sets.The elastic component 52 of the present embodiment is helical spring, and one end of helical spring is abutted with handle 26, and other end locking piece 50 abuts Promote sticking department 54 that there is the trend of insertion location hole 56.

Preferably, in the present embodiment, handle 26 is slided in 24 outer surface of casing, the part being coupled on casing 24 with handle 26 Transverse holes 58 are provided with, locking piece 50 is threaded through in transverse holes 58, and one end is abutted with elastic component 52, and the other end protrudes from casing 24 and handle 26 outside form operating knob 60, sticking department 54 is prominent from the approximately mid way between of locking piece 50.The setting of location hole 56 exists On the inner surface of shell 20.In present embodiment, sticking department is contained in casing, correspondingly, table is arranged in casing in location hole Face, it may occur to persons skilled in the art that, by some simple evolutions sticking department and location hole can also be coupled, it is all to adopt It should all be included within the scope of protection of the present invention with the technical solution similar with present embodiment.

In present embodiment, locking piece 50 is in a strip shape to extend along dimension linear movement in latched position and release position It is moved between setting.Preferably, locking piece 50 is moved along the direction of the axis X-X perpendicular to 22 output shaft of motor in locking bit It sets and is moved between releasing position.Shorter locking piece can effectively work as a result, keep position holding mechanism structure simple, It occupies little space, so as to effectively reduce the volume of power tool.

The operating method of position holding mechanism is described below.

Fig. 4 is referred to, when locking piece 50 is located at latched position, elastic component 52 pushes the insertion positioning of sticking department 54 by compression Hole, handle 26 are maintained at predeterminated position with respect to casing 24.

Refer to Fig. 5, when unlock, operator overcomes the active force of elastic component 52 to push operating knob 60 linear along unlocking direction It is mobile to disengage sticking department 54 and location hole, unlocked position is reached, handle 26 can be slided with respect to casing 24.

Turning back to Fig. 1, the present embodiment is preferred, and power tool 100 is the power tool of dual output mode, transmission mechanism packet Include motion changing mechanism, the operable driving output rod of motion changing mechanism be in the first motor pattern of output reciprocating motion with Export the second motor pattern of rotary motion.Due to the exportable rotation of the output rod of the power tool and reciprocal two kinds of movements mould Formula, to widen the use scope of power tool significantly, and the power tool is real by a sets of transmission mechanism by motor The existing same output rod output rotation and reciprocal two kinds of motor patterns, thus the exportable stable rotation of output rod or reciprocal fortune It is dynamic, facilitate operation.It may occur to persons skilled in the art that other power tools have electric drill, screwdriver, electric hammer etc. also to can be used Technical solution of the present invention slides handle with respect to casing, to meet different operating conditions to the different demands of handle position.

It may occur to persons skilled in the art that the present invention can also have other implementations, but as long as it is used Technical spirit and the present invention it is same or similar seemingly or it is any based on the variations and alternatives made of the present invention all of the invention Within protection scope.

Claims

1. a kind of power tool, including shell, the shell includes casing for accommodating motor and connect with the casing The output shaft of handle, the motor drives output rod movement by transmission mechanism, and the output shaft has axis, and feature exists In: the handle and the casing are slided along the extending direction of the axis and are coupled, and the handle is equipped with control piece, the control Product and the motor are electrically connected by conducting wire, and the conducting wire extends to the handle from the casing internal, on the shell Equipped with coiling apparatus, the coiling apparatus is tensioned the conducting wire along the take-up direction of stringing lead.

2. power tool as described in claim 1, it is characterised in that: the coiling apparatus includes being coupled with the housing into rotation For for conducting wire winding wrapping post on it, there is the wrapping post along the take-up side wrapping post force To the bias piece of the trend of movement.

3. power tool as claimed in claim 2, it is characterised in that: the rotary centerline of the wrapping post is perpendicular to the axis Line.

4. power tool as claimed in claim 2, it is characterised in that: at least one end of the wrapping post is axially extended with The wrapping post and the housing into rotation is coupled in shaft, the shaft and housing into rotation mating.

5. power tool as claimed in claim 2, it is characterised in that: the wrapping post has hollow portion and the wrapping post Wall portion is equipped with through-hole, and the conducting wire passes through the through-hole from the hollow portion and is wrapped on the outer surface of the wrapping post.

6. power tool as claimed in claim 2, it is characterised in that: the coiling apparatus further includes respectively from the wrapping post The cover board that is laterally extended of both ends.

7. power tool as described in claim 1, it is characterised in that: under the casing includes upper half shell and is connected with handle Half-shell, the coiling apparatus are arranged in the lower half shell.

8. power tool as described in claim 1, it is characterised in that: the conducting wire is two strands, and the coiling apparatus includes point It is not tensioned the first coiling apparatus and the second coiling apparatus of wherein one conducting wire.

9. power tool as claimed in claim 8, it is characterised in that: first coiling apparatus and second coiling apparatus Rotary centerline be overlapped.

10. power tool as described in claim 1, it is characterised in that: the transmission mechanism includes motion changing mechanism, described The operable driving output rod of motion changing mechanism is in the first motor pattern and output rotation fortune of output reciprocating motion The second dynamic motor pattern.