CN200981165Y - Special-purpose clamping wrench for electric tool and knife tool of the same - Google Patents
Special-purpose clamping wrench for electric tool and knife tool of the same Download PDFInfo
- Publication number
- CN200981165Y CN200981165Y CN 200620131161 CN200620131161U CN200981165Y CN 200981165 Y CN200981165 Y CN 200981165Y CN 200620131161 CN200620131161 CN 200620131161 CN 200620131161 U CN200620131161 U CN 200620131161U CN 200981165 Y CN200981165 Y CN 200981165Y
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- clutching member
- electric tool
- output shaft
- spanner
- ratchet
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Abstract
The utility model discloses an electric tool, in particular to a special-purpose clamping wrench for a cutter of the electric tool. The electric tool comprises a first clutching element equipped on an output shaft, and a second clutching element which is equipped on a housing case and is axially movable, in the dismounting process of the cutter, a wrench clamps a locking element and simultaneously squeezes the second clutching element to axially move for engaging with the first clutching element and locking the output shaft, then rotating the wrench to release or tighten the locking element for dismounting the cutter. For realizing that the wrench simultaneously squeezes the second clutching element to axially move in the cutter dismounting process, a roof of the wrench is equipped with a projecting part which is perpendicular to the extending direction of a handle. Due to the employment of the axially-movable clutching element and a special-purpose wrench with a projecting part on the roof, the electric tool of the utility model can make the wrench to lock the output shaft and simultaneously capable of releasing or tightening the locking element, thereby achieving one-hand operation, and the electric tool of the utility model has the advantages of simple structure, low costs, and convenient employment.
Description
Technical field
The utility model relates to a kind of electric tool, particularly a kind of need be when changing cutter the electric tool of locking output shaft, as bakelite mill, angle mill, electric circular saw etc., the utility model also relates to the special spanner that uses in the tool-holder process of assembling of this type electric tool.
Background technology
Thereby electric tools such as bakelite mills, electric circular saw normally drive the cutter rotation by motor-driven output shaft rotation and work such as cut, but cutter is easy to wearing and tearing and needs to change cutter in long-term use, and in operating process, also often need to change the cutter of various different sizes, but in the process of the instrument dismounting cutter that uses spanner or similar functions, output shaft is easy to take place transfer, thereby is unfavorable for the dismounting of cutter.Prior art has disclosed the various lock shaft devices that prevent the output shaft transfer.United States Patent (USP) 5,430, the 944 a kind of electric circular saws that disclosed, an affixed disk on motor output shaft with groove, casing is provided with piston and depression bar, thereby the operation depression bar makes piston enter locking output shaft in the disk groove, unclamping the depression bar piston resets under the elastic force of stage clip and unclamps output shaft, but this lock shaft device parts are many, complex structure, need a hand operated depression bar locking output shaft in use, instruments such as another hand use spanner carry out the dismounting of cutter, and the operation effort is used inconvenience.United States Patent (USP) 5590988 has disclosed the lock shaft device that a kind of bakelite mills, the output shaft that this bakelite mills is provided with flat horizontal surface, the middle part is provided with greater than the circular hole of output shaft diameter and the flat hole of accommodating this flat horizontal surface that is attached thereto on its lock shaft spare, one end of lock shaft spare is provided with button, the other end is socketed with stage clip, one end of stage clip is resisted against on the inwall of supporting disk, output shaft can freely rotate when being positioned at greater than the circular hole of output shaft diameter, the button of pressing lock shaft spare makes that output shaft was locked when the flat horizontal surface of output shaft was positioned at flat hole, unclamp the button of lock shaft spare, this lock shaft spare resets under the elastic force of stage clip, output shaft can rotate freely, the lock shaft device structure that this patent discloses is simpler, but need hand of operator in use equally when the button of pushing lock shaft spare is with the locking output shaft, the another hand uses instrument such as spanner to carry out the dismounting of cutter, and this operation is to require great effort very much and awkward.Simultaneously, the ad-hoc location that this flat square structure makes being locked in of main shaft that two symmetries can only be arranged in the 360 degree scopes can carry out, and makes the operator must repeatedly attempt finishing the operation of spindle lock, operation effort and use inconvenience.
Same prior art has also disclosed the various spanners that are used for the dismounting cutter, as the fork spanner that has lengthwise handle and forked openend common on the market; And for example the movable connection of a sidewall of the forked openend that discloses of Chinese patent application CN1370658A is in order to the monkey wrench of connectors such as the nut that clamps different size, bolt; What and for example Chinese patent CN1146488C and Chinese patent CN1230477 were disclosed can realize the ratchet spanner that continuous repeated multiple times is operated with various ratchet devices.But various spanner of the prior art role in the tool-holder process of assembling of electric tool is single, can only clamp connection rotation, and can not prevent the transfer of output shaft, thereby be unfavorable for the dismounting of cutter.
The utility model content
Technical problem to be solved in the utility model provides a kind of electric tool simple in structure, easy to use, can realize singlehanded locking output shaft and carry out the cutter dismounting; For this reason, the utility model also will provide a kind of cutter special use of this electric tool to clamp spanner.
Further technical problem to be solved in the utility model is that output shaft all can be realized locking at an arbitrary position, and the operator need not seek specific locked position.
The technical solution of the utility model is: a kind of electric tool, comprise casing, be housed in the motor in the described casing, by the output shaft of described motor-driven rotation and the locking element that connects described output shaft and cutter, wherein said output shaft is provided with and its first circumferentially fixing clutching member, described casing is provided with and its second circumferentially fixing clutching member, but described at least first clutching member and described one of them axially-movable of second clutching member make described first clutching member and described second clutching member selectively axially mesh or disengaging.
The further technical scheme of the utility model is: described first clutching member comprises the sharp-pointed convex surface that at least one radially is provided with along described output shaft, described second clutching member comprises and is circular evenly distributed a plurality of concave surfaces of accommodating that the center line of accommodating concave surface intersects.
In disassembly process, lock output shaft simultaneously for the cutter that makes the utility model electric tool and realize one-handed performance, at first the openend of spanner being aimed at described locking element insertion makes the sidewall of spanner clamp described locking element, meanwhile the roof of described spanner pushes that thereby described second clutching member makes it to move axially and described first clutching member engagement locking output shaft, then rotary spanner loosens or tightens described locking element, dismounting cutter.
In order to make the utility model electric tool in the process of dismounting cutter, spanner can push the second clutching member axially-movable in the rotational lock element, need to use special spanner, described spanner comprises handle and two side shape and the corresponding forked openend of described locking element outer surface that lengthwise extends, and the roof of wherein said openend is provided with perpendicular to protuberance on the described handle bearing of trend, that can compress axially described second clutching member.
Electric tool of the present utility model is not limited to bakelite and mills, and can be electric tools such as angle mill or electric circular saw equally.
But the utility model electric tool is owing to adopted the second clutch element of axially-movable, and the special spanner of roof band protuberance, make spanner roof when insertion makes its sidewall clamp locking element push the second clutching member axially-movable and the engagement of first clutching member, when rotary spanner loosens or tightens locking element, pin output shaft, realized the operation of singlehanded dismounting cutter; Second clutching member employing of the present utility model is circular evenly distributed a plurality of concave surfaces of accommodating and is connected with first clutching member, has realized output shaft locking at an arbitrary position; And electric tool of the present utility model also has characteristics simple in structure, that cost is low, easy to use.
Description of drawings
The embodiment that uses on bakelite mills below in conjunction with accompanying drawing and the utility model is described further the utility model.
Fig. 1 is the partial sectional view that the utility model first preferred embodiment bakelite mills.
Fig. 2 is the exploded view of the lock shaft device that mills of bakelite shown in Figure 1.
Fig. 3 is the partial sectional view that the utility model second preferred embodiment bakelite mills.
Fig. 4 is the partial enlarged drawing of the lock shaft device that mills of bakelite shown in Figure 3.
Fig. 5 is along the cutaway view on the A-A direction shown in Figure 4.
Fig. 6 is the stereogram that is used for the first preferred embodiment special spanner that the utility model preferred embodiment bakelite milling cutter clamps.
Fig. 7 is the stereogram that is used for the second preferred embodiment special spanner that the utility model preferred embodiment bakelite milling cutter clamps.
Fig. 8 is the cutaway view of special spanner shown in Figure 7.
Fig. 9 illustrates to have described bakelite milling cutter shown in Figure 1 and clamps state, and wherein second clutching member is positioned at and first clutching member position that is separated.
Figure 10 illustrates to have described bakelite milling cutter shown in Figure 1 and clamps state, and wherein second clutching member is positioned at the position that is connected with first clutching member.
The specific embodiment
Shown in seeing figures.1.and.2, the utility model first preferred embodiment bakelite mills and 10 comprises casing 12, is housed in the motor 14 in the casing 12, by motor 14 drive rotation output shaft 16, connect the locking element 18 and the lock shaft device 30 of output shaft 16 and cutter (not shown), wherein output shaft 16 ends stretch out casing 12 and are threaded with locking element 18.
With reference to Fig. 3, Fig. 4 and shown in Figure 5, the utility model second preferred embodiment bakelite mills 10 ' and mills 10 difference with the utility model first preferred embodiment bakelite and be: first clutching member 32 ' of lock shaft device 30 ' can be socketed on the flat quadrate part 17 ' of output shaft 16 ' by flat square hole 33 ' with moving axially, and wherein first clutching member 32 ' comprises the face of connecting 35 '; Second clutching member 38 ' is fixedly mounted on the casing 12 '; The interface of first clutching member 32 ' and second clutching member 38 ' is a pair of engageable annular end tooth 46 ', 42 '; Flexible member 36 ' is arranged between first clutching member 32 ' and second clutching member 38 ', wherein flexible member 36 ' one end is resisted against on the output shaft 16 ', and the other end is resisted against win clutching member 32 ' and second clutching member 38 ' are separated.
First, second preferred embodiment bakelite of the utility model mills 10,10 ' all needs to use special spanner when the dismounting cutter, the first preferred embodiment special spanner as shown in Figure 6, this preferred embodiment special spanner 60 is to improve on usually said fork spanner basis.Common fork spanner comprises handle portion 62 and the forked openend 64 that lengthwise extends, and two side 66 shapes of wherein forked openend 64 are corresponding with the outer surface of locking element 18, and the outer surface of common locking element 18 is a regular hexagon.This preferred embodiment special spanner improvements be the roof 68 of openend 64 be provided with perpendicular to second on the handle bearing of trend connect face 70, the second connect face 70 comprise at least one section from openend 64 front ends raise gradually to the back-end domatic 71 with the end face 73 parallel with the handle bearing of trend; Further openend 64 roofs 68 can perpendicular to sidewall 66 inwardly part extend to form edge parts 75, the inner surface 72 of edge part 75 is projected as straight line on sidewall 66.
Yet, because the limitation of fork spanner itself makes the special spanner 60 among the utility model first embodiment can not realize continuous repeatedly repeatable operation, thereby for example need in the clockwise direction repeatedly rotation to finish to loosen or during locking operation, must insert earlier spanner 60 and drive locking element 18 and turn clockwise and extract spanner 60 behind the certain angle, insert counterclockwise spanner 60 then after the indexing once more and continue to drive locking elements 18 and turn clockwise, so repeated multiple times makes very inconvenience of operation.Equally, because the fork spanner two side makes fixedly that all the special spanner 60 among the utility model first embodiment can not be according to the size of the size adjusting openend 64 of locking element 18, thereby versatility is relatively poor.
In view of above-mentioned limitation, referring to Fig. 7 and shown in Figure 8, the utility model second preferred embodiment special spanner 80 has been done above-mentioned improvement one setting and has similarly been connected face 101 perpendicular to second on the handle bearing of trend with spanner 60 on the monkey wrench of being with ratchet device 90, make its locking element 18 that can further realize the clamping different size in the process that realizes the dismounting cutter in locking output shaft and continuous repeatable operation.This special spanner 80 comprises two handles 82,84 that lengthwise extends and by the two side 86,88 of the forked openend 85 of two handles, 82, the 84 operant activities locking element 18 in order to the clamping different size, two side 86,88 shapes of openend 85 and the outer surface of locking element 18 adapt, when being the cylindric flank of tooth as locking element 18 outer surfaces, the end of sidewall 88 can be set to arc and realize better fit.The sidewall 86 of spanner 80 is provided with ratchet device 90, and ratchet device 90 comprises that two one ends and sidewall 86 are pivotally connected, and the other end is ratchet 92,94 freely; Be respectively arranged with flexible member 96,98 between one side of the close sidewall 86 of the free end of ratchet 92,94 and the sidewall 86.The roof 100 of spanner 80 is provided with switching mechanism 102, switching mechanism 102 comprises the rotating dog (not shown) that passes roof 100, the end that rotating dog stretches out roof 100 inner surfaces be provided with the cam 104 that is positioned in the middle of the ratchet 92,94 and rotating dog stretch out that an end of roof 100 outer surfaces is provided with can manually-operated toggle 106, its cam 104 can be rotated under the drive of toggle 106, thereby selectively contacts with ratchet 92 or ratchet 94 or break away from.When cam 104 contacts with ratchet 92 and is separated with ratchet 94, cam 104 is pushed ratchet 92 open and is made it away from locking element 18, and ratchet 94 contacts all the time with locking element 18 outer surfaces under the effect of flexible member 98, when spanner 80 counterclockwise rotates in Fig. 5, ratchet 94 promotes locking elements 18 and is rotated counterclockwise realizing and loosens or lock, when spanner 80 turns clockwise, 98 motions of ratchet 94 compression elastic elements make spanner 80 reset, continue to be rotated counterclockwise spanner 80 promotion locking elements 18 then and be rotated counterclockwise, so repeated multiple times makes spanner 80 need not to break away from locking element 18 and just can finish the whole overall process that drives locking element 18 rotations in the counterclockwise direction.Contact with ratchet 94 and when being separated when cam 104 equally with ratchet 92, cam 104 is pushed ratchet 94 open and is made it away from locking element 18, can make spanner 80 need not to break away from the overall process that locking element 18 is just finished whole driving locking element 18 rotations in the clockwise direction.Using left hand thread when locking element 18 is threaded with output shaft 16 still is that right-handed thread has determined the function of loosening or locking that locking element 18 is realized in rotary course.
Below mill 10 processes of carrying out the cutter dismounting with the first preferred embodiment special spanner, 60 illustrative shown in Figure 6 with the first preferred embodiment bakelite shown in Figure 1, as Fig. 9 and shown in Figure 10, at first the upper surface of the inner surface 72 of spanner 60 openends 64 being aimed at locking element 18 inserts the outer surface that the sidewall 66 that makes spanner 60 is clamped locking element 18, and edge part 75 is resisted against the upper surface of locking element 18; Simultaneously in the process that spanner inserts, second of roof 68 connect face 70 and push first of annulus 48 gradually along domatic 71 and connect face 49 to end face 73, make second clutching member, 38 compression elastic elements 36 move on axially along gathering sill 56, when second clutching member 38 rises to certain altitude, one of them inclined side of accommodating concave surface 46 will contact with the sharp-pointed convex surface 42 of first clutching member 32, and further with the sharp-pointed convex surface 42 of first clutching member 32 with accommodate concave surface 46 and align and mesh, lock main shaft thereby output shaft 16 can not be rotated relatively with casing 12 lockings.Then the handle portion 62 of rotary spanner 60 is loosened or is tightened locking element 18, carry out the dismounting of cutter, after finishing the cutter dismounting, remove spanner 60, the second clutching members 38 and under the elastic force effect of flexible member 36, be separated and make output shaft 16 to rotate freely with first clutching member 32.
More than bakelite shown in Figure 1 is milled 10 when carrying out the cutter dismounting, spanner 60 is to dock with first clutching member 32 by pushing 38 axially-movables of second clutching member when inserting, thereby locks output shaft 16.And bakelite shown in Figure 3 is milled 10 ' when carrying out the cutter dismounting, spanner 60 is when inserting, its second face 35 ' that connects that connects on face 70 extruding first clutching member 32 ', thus the clutching member 32 ' of winning is moved axially be meshed locking output shaft 16 ' with second clutching member 38 '; Transfer to spanner 60, the first clutching members 32 ' under the elastic force effect of flexible member 36 ', to break away from second clutching member 38 ', the output shaft 16 ' rotation that affranchises.
Equally according to inventive concept of the present utility model, those of ordinary skills are easy to but first clutching member in the utility model and second clutching member all are arranged to axially-movable, make spanner one of them clutching member when inserting be connected with another clutching member, connect the locking that realizes output shaft thereby perhaps drive all relative motion of first clutching member simultaneously with second clutching member in the spanner insertion by axial the driving.
In the utility model, flexible member 36 can be that stage clip also can be other flexible members that have centre bore, as metal spring leaf.
In the utility model first preferred embodiment bakelite mills, the radial projection 50 that cooperatively interacts is set on second clutching member 38 and the end cap 40 is that with the effect of gathering sill 56 38 axially-movables play the guiding role and limited second clutching member 38 rotating relative to end cap 40 to second clutching member, its effect also can be realized by other structures, the tube end 52 as end cap 40 is provided with axially extended column, and also being provided with circular hole on the main body 44 of second clutching member 38 can be socketed on the column with moving axially.
In the cutter disassembly process, the inner surface 72 of edge part 75 also can be that the upper surface of aiming at the end of thread that is threaded with locking element 18 on the output shaft 16 inserts when spanner 60 inserted, perhaps the boss face of establishing in addition on output shaft 16 makes spanner 60 aim at insertion, in a word, cooperating of the upper surface of edge part 75 inner surfaces 72 and locking element 18 upper surfaces or output shaft 16 ends of thread is for spanner 60 insertion of steadily leading, thereby and unclamp or tighten in the process of locking element 18 spanner 60 at rotary spanner 60 and can not axially move down and break away from the clutching member that is extruded, better avoided having unclamped output shaft 16 unexpectedly and output shaft 16 transfers that cause.
In Fig. 7 and special spanner shown in Figure 8, when not needing selectively to realize clockwise direction or counterclockwise finishing unclamps or when locking the operation of locking element 18, can include only one of them ratchet and be arranged on flexible member between this ratchet and sidewall, the switching mechanism 102 of this moment can be omitted.Equally be easy on the basis of other various spanners, do this relevant improvement, other spanners of mobilizable monkey wrench of a sidewall of the forked openend that discloses as Chinese patent application CN1370658A and the like according to inventive concept those of ordinary skills of the present utility model.
Claims (12)
1. electric tool, comprise casing (12), be housed in the motor (14) in the described casing (12), drive the output shaft (16) of rotation and connect described output shaft (16) and the locking element (18) of cutter by described motor (14), it is characterized in that: described output shaft (16) is provided with and its circumferentially fixing first clutching member (32), described casing (12) is provided with and its circumferentially fixing second clutching member (38), described first clutching member (32) and described second clutching member (38) but one of them axially-movable at least makes the selectively axially engagement or break away from of described first clutching member (32) and described second clutching member (38).
2. electric tool according to claim 1, it is characterized in that: described electric tool comprises the flexible member (36) that is arranged between described first clutching member (32) and described second clutching member (38), and described flexible member (36) makes described first clutching member (32) and described second clutching member (38) be separated.
3. electric tool according to claim 1 and 2 is characterized in that: one of them is sharp-pointed convex surface (42) for the interface of described first clutching member (32) and described second clutching member (38), and another is for accommodating concave surface (46) accordingly.
4. electric tool according to claim 3, it is characterized in that: described first clutching member (32) comprises the described sharp-pointed convex surface (42) that at least one radially is provided with along described output shaft, described second clutching member (38) comprises and is the circular evenly distributed a plurality of described concave surface (46) of accommodating that described center line of accommodating concave surface (46) intersects.
5. electric tool according to claim 1 and 2, it is characterized in that: described casing (12) is provided with along axially extended first guide way of described output shaft (16) (56), and described second clutching member (38) is provided with second guide way (50) and can connects with described first guide way (56) with moving axially.
6. electric tool according to claim 1 and 2 is characterized in that: described second clutching member (38) is provided with and first connects face (49) outside small part is stretched out described casing (12).
7. special spanner that is used to clamp the cutter of the described electric tool of claim 1, described spanner (60; 80) comprise at least one handle (62 that lengthwise extends; 82,84) and two side (66; 86,88) the corresponding forked openend (64 of shape and described locking element (18) outer surface; 85), it is characterized in that: described openend (64; 85) roof (68; 100) be provided with perpendicular on the described handle bearing of trend, can compress axially described second clutching member second connect face (70; 101).
8. special spanner according to claim 7, it is characterized in that: described roof (68) perpendicular to described sidewall (66) inwardly part extend to form edge part (75), the inner surface (72) of described edge part (75) is projected as straight line on described sidewall (66).
9. special spanner according to claim 7 is characterized in that: described spanner (80) has ratchet device (90).
10. special spanner according to claim 9, it is characterized in that: described ratchet device (90) comprises that a ratchet (92) and an end that at least one and described sidewall (86) are pivotally connected are connected at least one flexible member (96) that the other end is connected with described sidewall (86) with described ratchet (92).
11. special spanner according to claim 10, it is characterized in that: described ratchet device (90) comprises described first ratchet (92), second ratchet (94) and be attached thereto described first flexible member (96) that connects respectively, second flexible member (98), described spanner (80) also comprises switching mechanism (102), described switching mechanism (102) comprises and is positioned at first ratchet (92), cam (104) in the middle of second ratchet (94) and can manually-operated toggle (106), described cam (104) and described toggle (106) connect and make described cam (104) rotate under the drive of described toggle (106) selectively to contact with described first ratchet (92) or described second ratchet (94) or break away from.
12. special spanner according to claim 7 is characterized in that: at least one described sidewall (88) of described spanner (80) flexibly connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620131161 CN200981165Y (en) | 2006-08-29 | 2006-08-29 | Special-purpose clamping wrench for electric tool and knife tool of the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620131161 CN200981165Y (en) | 2006-08-29 | 2006-08-29 | Special-purpose clamping wrench for electric tool and knife tool of the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200981165Y true CN200981165Y (en) | 2007-11-28 |
Family
ID=38908329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620131161 Expired - Lifetime CN200981165Y (en) | 2006-08-29 | 2006-08-29 | Special-purpose clamping wrench for electric tool and knife tool of the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200981165Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101134284B (en) * | 2006-08-29 | 2012-09-05 | 苏州宝时得电动工具有限公司 | Electric tool, clamping and loading method of the cutter thereof and special wrench thereof |
-
2006
- 2006-08-29 CN CN 200620131161 patent/CN200981165Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101134284B (en) * | 2006-08-29 | 2012-09-05 | 苏州宝时得电动工具有限公司 | Electric tool, clamping and loading method of the cutter thereof and special wrench thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20071128 Effective date of abandoning: 20060829 |