CN2565572Y - Self locking device of bias cutter protective hood - Google Patents
Self locking device of bias cutter protective hood Download PDFInfo
- Publication number
- CN2565572Y CN2565572Y CN 02266297 CN02266297U CN2565572Y CN 2565572 Y CN2565572 Y CN 2565572Y CN 02266297 CN02266297 CN 02266297 CN 02266297 U CN02266297 U CN 02266297U CN 2565572 Y CN2565572 Y CN 2565572Y
- Authority
- CN
- China
- Prior art keywords
- protective cover
- bias cutter
- locking pin
- lock pin
- locking device
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a self locking device of a bias cutter protective cover, which belongs to a component of an electric tool. The utility model comprises a locking pin seat 3 fixedly arranged on a bias cutter body close to a protective cover 11, a locking pin 8 arranged on the locking pin seat 3 and an elastic element, wherein the locking pin seat 3 is provided with a U-shaped part, front and back folding plates of the U-shaped part are provided with two holes 301, and the centers of the holes are in a same axle which is likely perpendicular to the side of the protective cover 11; the locking pin 8 penetrates through the two holes 301 in the same axle; the elastic element acts on the locking pin 8 and causes the locking pin 8 to have the tendency of offset toward one side of the protective cover 11. When the bias cutter is not in use and the lower part of a saw bit is covered with the protective cover, the head of the locking pin 8 extends through the edge of the protective cover 11 to ensure the protective cover 11 to be locked. When the utility model is used, the protective cover can be locked by the self locking device without being opened by mistakes when the bias cutter body is raised and out of use; thus, the safety effect can be enhanced; the characteristic that when the bias cutter is in use or out of use, the protective cover can be opened or closed automatically can be retained.
Description
Technical field
The utility model relates to a kind of parts of electric tool, particularly a kind of self-locking device that prevents that the bias cutter protective cover from opening when non-working condition.
Background technology
Existing bias cutter generally all has protective cover, when lifting fuselage and stop bias cutter and use, this protective cover generally can be withdrawn automatically and is in closed condition, cutting appliance is closed in case hurt sb.'s feelings, and when pressing fuselage use bias cutter, this protective cover can be opened again automatically, exposes cutting appliance and prepares cutting.Though such design can be played certain protective action, but because the startup and the rotating speed of bias cutter are all very fast, switch is convenient again, so still have certain danger, especially when clamping workpiece, if supress fuselage because of carelessness, injure the operator probably, be exactly child or other personnel that are ignorant of operating in addition,, also may cause unexpected injury because of curious or when pressing the machine of not outage unintentionally.
Summary of the invention
Technical problem to be solved in the utility model be provide a kind of at above-mentioned prior art present situation and lift when bias cutter is in fuselage, its protective cover can be only because of directly not pressed the self-locking device that fuselage is opened when stopping using.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: the self-locking device of bias cutter protective cover includes:
One locking pin seat is fixedly mounted on the fuselage position of contiguous protective cover, and it has the position that a side-looking is " Qian " shape, and has the hole of two centers on same axis on the flap of the front and back at this position, and described axis is perpendicular with the side of protective cover substantially;
One lock pin passes described two coaxial apertures and is installed on the locking pin seat;
One flexible member acts on and makes it have the trend of moving towards protective cover one lateral deviation all the time on the described lock pin, and does not work and protective cover shade during in the saw blade bottom at bias cutter, makes the head of lock pin extend through the edge of protective cover, makes the protective cover locking.
Described locking pin seat with on the handle that is fixed on bias cutter and the fuselage position between the protective cover for good;
Described flexible member can be one be enclosed within that lock pin is outer, the compression spring between the front and back flap that is positioned at locking pin seat " Qian " shape position, its front end is against on the back-up ring that is fixed as one with lock pin, the rear end is against on the flap of back;
Described lock pin afterbody can be suitable for pulling moving portion for carrying out manual control by being provided with one, but be to be connected with an operating mechanism that it can be pulled back better at described lock pin afterbody, it can be to include a securing rod, its middle part is hinged with described locking pin seat, the one end is provided with a button, the other end is one to be sweptback inclined-plane, and being provided with a deep-slotted chip breaker thereon, described lock pin afterbody passes this deep-slotted chip breaker and is stuck on the trailing flank of this deep-slotted chip breaker by the large-diameter portion of lock pin tail end;
The hinged mode of described securing rod middle part and locking pin seat can be: be provided with a circular hole at the middle part of securing rod, one screw passes screw on this circular hole and the locking pin seat and is spirally connected and securing rod is hinged on the locking pin seat, and the axis of described screw is parallel substantially with lock pin;
Described operating mechanism can also include a torsion spring that is sleeved on the screw, and the one end passes the aperture that is positioned at the securing rod upper end and is fixed on the securing rod, and the other end is positioned on the fuselage, makes the beveled end of securing rod have the trend that upward deflects;
The design of deep-slotted chip breaker on the securing rod beveled end, make when securing rod be the center of circle when rotating with the screw, deep-slotted chip breaker place on the securing rod beveled end and the distance between the locking pin seat progressively increase, thereby can spur that lock pin moves backward and the unlatching of controlling lock pin easily.
Compared with prior art, advantage of the present utility model is significantly to have improved its safety in utilization when having kept the original switch of bias cutter to make things convenient for characteristics, when stopping using, not only protective cover can be closed automatically, and can be automatically with its pinning when protective cover is closed, and when needs use, can open self-locking device easily again.The utility model suits to install and use in the built-in protecting cover of bias cutter, rod-pulling type bias cutter or outer protective cover especially.
Description of drawings
Fig. 1 is the three-dimensional exploded view of the utility model embodiment;
Fig. 2 is the front schematic view of the utility model embodiment;
Fig. 3 is the left view of Fig. 2.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As Fig. 1～illustrated in Figure 3, be a preferred embodiment of the present utility model.The self-locking device of the bias cutter protective cover of present embodiment comprises a locking pin seat 3, it is fixedly mounted on the fuselage between bias cutter handle 12 and the protective cover 11 by two pan head screws 6,7, it has the position that a side-looking is " Qian " shape, and on the flap of the front and back at this position, having the hole 301 of two centers on same axis, the side of described axis and protective cover 11 is perpendicular; One lock pin 8 passes described two coaxial apertures 301 and is installed on the locking pin seat 3, the middle part of lock pin 8 has an annular groove 801, be installed with a back-up ring 5 on the annular groove 801, be set with a compression spring 4 on the lock pin 8, the front end of compression spring 4 is against on the back-up ring 5, the rear end is against on the back flap at locking pin seat 3 " Qian " shape position, the elastic force of compression spring 4 makes lock pin 8 have the trend of moving towards protective cover 11 1 lateral deviations all the time, and extend through the edge of protective cover 11 at the do not work head that makes lock pin 8 when protective cover 11 is closed of bias cutter, make protective cover 11 lockings.Other has a securing rod 2, its middle part has a circular hole 201, the screw 10 of the not threaded ladder bulge loop 1001 of one terminal tool passes that this circular hole 201 is spirally connected with screw 302 on the locking pin seat 3 and securing rod 2 and locking pin seat 3 is hinged, securing rod 2 is positioned between the coiled hair of screw 10 and the locking pin seat 3 and just is enclosed within on the less bulge loop of described ladder bulge loop 1001, the axis of described screw 302 is parallel with lock pin 8, the end, upper end of securing rod 2 is inlaid in the button 1, button 1 is positioned at handle 12 sides of fuselage, the other end of securing rod 2 is one to be sweptback inclined-plane, and be provided with a deep-slotted chip breaker 202 thereon, the center camber line of deep-slotted chip breaker 202 is being on the face of cylinder of axis with screw 10, and described lock pin 8 afterbodys pass this deep-slotted chip breaker 202 and are stuck in by the coiled hair 802 of lock pin 8 tail ends on the trailing flank of this deep-slotted chip breaker 202 (referring to Fig. 3).Also be equipped with one on the screw 10 and can make protective cover securing rod 2 automatically reset torsion springs 9, the annulus 901 of torsion spring 9 by its middle part is sleeved on the big bulge loop of ladder bulge loop 1001 of screw 10, the aperture 203 that one end of torsion spring 9 passes securing rod 2 upper ends is fixed on the securing rod 2, and the other end is positioned at (referring to Fig. 2) on the bias cutter fuselage.
When needing to open the bias cutter use, can when pressing fuselage, press the button 1, then securing rod 2 is that the center of circle produces rotation with screw 10 under power effect in addition, because of the deep-slotted chip breaker 202 of securing rod 2 other ends and the distance between the locking pin seat 3 progressively increase, thereby the latched position that drive lock pin 8 moves backward vertically and forces lock pin 8 to break away from bias cutter protective cover 11, protective cover 11 is able to freely-movable and opens; And behind the release button 1, securing rod 2 promptly automatically resets under the effect of torsion spring 9, and meanwhile, lock pin 8 also keeps the elasticity situation of protracting once more under the effect of compression spring 4, be against on protective cover 11 shells of opening, at this moment, as long as a use that stops bias cutter, protective cover 11 1 is closed, lock pin 8 promptly protracts automatically and blocks protective cover 11 and locked, at this moment, unless press the button 1 once more, protective cover 11 can't be opened.
In addition, design as a kind of simplification, above-mentioned securing rod 2, button 1, screw 10 and torsion spring 9 etc. be used to handle operating mechanism that lock pin 8 opens also can, and replace the part that is suitable for finger pull in lock pin 8 afterbodys processing one, with the unlatching of hand direct manipulation lock pin 8.
Claims (8)
1, a kind of self-locking device of bias cutter protective cover is characterized in that it includes:
One locking pin seat (3), be fixedly mounted on the fuselage position of contiguous protective cover (11), it has the position that a side-looking is " Qian " shape, and has the hole (301) of two centers on same axis on the flap of the front and back at this position, and described axis is perpendicular with the side of protective cover (11) substantially;
One lock pin (8) passes described two coaxial apertures (301) and is installed on the locking pin seat (3);
One flexible member, act on and make it have the trend of moving all the time on the described lock pin (8) towards protective cover (11) one lateral deviations, and do not work and protective cover shade during at bias cutter, make the head of lock pin (8) extend through the edge of protective cover (11), make protective cover (11) locking in the saw blade bottom.
2, the self-locking device of bias cutter protective cover according to claim 1 is characterized in that described locking pin seat (3) is fixed on the handle (12) and the fuselage position between the protective cover (11) of bias cutter.
3, the self-locking device of bias cutter protective cover according to claim 1, it is characterized in that described flexible member be one be enclosed within that lock pin (8) is outer, the compression spring (4) between the front and back flap that is positioned at locking pin seat (3) " Qian " shape position, its front end is against on the back-up ring (5) that is fixed as one with lock pin (8), and the rear end is against on the flap of back.
4,, it is characterized in that described lock pin (8) afterbody is connected with an operating mechanism that it can be pulled back according to the self-locking device of claim 1 or 2 or 3 described bias cutter protective covers.
5, the self-locking device of bias cutter protective cover according to claim 4, it is characterized in that described operating mechanism comprises a securing rod (2), its middle part is hinged with described locking pin seat (3), the one end is provided with a button (1), the other end is one to be sweptback inclined-plane, and being provided with a deep-slotted chip breaker (202) thereon, described lock pin (8) afterbody passes this deep-slotted chip breaker (202) and is stuck on the trailing flank of this deep-slotted chip breaker (202) by the large-diameter portion of lock pin (8) tail end.
6, the self-locking device of bias cutter protective cover according to claim 5, the hinged mode of described securing rod (2) middle part and locking pin seat (3) that it is characterized in that is: be provided with a circular hole (201) at the middle part of securing rod (2), one screw (10) passes screw (302) on this circular hole (201) and the locking pin seat (3) and is spirally connected and securing rod (2) is hinged on the locking pin seat (3), and the axis of described screw (302) is parallel with lock pin (8) cardinal principle.
7, the self-locking device of bias cutter protective cover according to claim 6, it is characterized in that described operating mechanism also includes a torsion spring (9) that is sleeved on the screw (10), the one end passes the aperture (203) that is positioned at securing rod (2) upper end and is fixed on the securing rod (2), the other end is positioned on the fuselage, makes the beveled end of securing rod (2) have the trend that upward deflects.
8, the self-locking device of bias cutter protective cover according to claim 7, it is characterized in that not having screw thread and diameter at the position that securing rod (2) and torsion spring (9) wear by described screw (10), to have a threaded portion than front end big.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02266297 CN2565572Y (en) | 2002-08-12 | 2002-08-12 | Self locking device of bias cutter protective hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02266297 CN2565572Y (en) | 2002-08-12 | 2002-08-12 | Self locking device of bias cutter protective hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2565572Y true CN2565572Y (en) | 2003-08-13 |
Family
ID=33732147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02266297 Expired - Fee Related CN2565572Y (en) | 2002-08-12 | 2002-08-12 | Self locking device of bias cutter protective hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2565572Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100411811C (en) * | 2005-05-11 | 2008-08-20 | 墩丰机械工业股份有限公司 | Built-in type locking device for eye-protection cover of cutting machine |
| CN100553837C (en) * | 2004-07-07 | 2009-10-28 | 布莱克和戴克公司 | Electric tool |
| CN101848790B (en) * | 2007-11-05 | 2013-08-21 | 罗伯特·博世有限公司 | Hand-held power tool |
| CN104779109A (en) * | 2014-01-13 | 2015-07-15 | 博世电动工具（中国）有限公司 | Electric tool and switch mechanism thereof |
| CN105904024A (en) * | 2016-06-20 | 2016-08-31 | 宁波市天铭工具有限公司 | Electric circular saw |
| CN105921812A (en) * | 2016-06-20 | 2016-09-07 | 宁波市天铭工具有限公司 | Handheld electric circular saw |
| CN109249084A (en) * | 2017-07-13 | 2019-01-22 | 苏州宝时得电动工具有限公司 | Shield opening mechanism and electric tool |
| CN112122676A (en) * | 2020-09-17 | 2020-12-25 | 江西吉事达厨房用品有限公司 | Aluminum alloy ex-trusions cutting process protection architecture |
-
2002
- 2002-08-12 CN CN 02266297 patent/CN2565572Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100553837C (en) * | 2004-07-07 | 2009-10-28 | 布莱克和戴克公司 | Electric tool |
| CN100411811C (en) * | 2005-05-11 | 2008-08-20 | 墩丰机械工业股份有限公司 | Built-in type locking device for eye-protection cover of cutting machine |
| CN101848790B (en) * | 2007-11-05 | 2013-08-21 | 罗伯特·博世有限公司 | Hand-held power tool |
| CN104779109A (en) * | 2014-01-13 | 2015-07-15 | 博世电动工具（中国）有限公司 | Electric tool and switch mechanism thereof |
| CN105904024A (en) * | 2016-06-20 | 2016-08-31 | 宁波市天铭工具有限公司 | Electric circular saw |
| CN105921812A (en) * | 2016-06-20 | 2016-09-07 | 宁波市天铭工具有限公司 | Handheld electric circular saw |
| CN109249084A (en) * | 2017-07-13 | 2019-01-22 | 苏州宝时得电动工具有限公司 | Shield opening mechanism and electric tool |
| CN109249084B (en) * | 2017-07-13 | 2019-08-27 | 苏州宝时得电动工具有限公司 | Shield opening mechanism and electric tool |
| CN112122676A (en) * | 2020-09-17 | 2020-12-25 | 江西吉事达厨房用品有限公司 | Aluminum alloy ex-trusions cutting process protection architecture |
| CN112122676B (en) * | 2020-09-17 | 2021-09-07 | 江西吉事达厨房用品有限公司 | Aluminum alloy ex-trusions cutting process protection architecture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |