CN2827677Y - Brake device on chain saw - Google Patents
Brake device on chain saw Download PDFInfo
- Publication number
- CN2827677Y CN2827677Y CN 200520073119 CN200520073119U CN2827677Y CN 2827677 Y CN2827677 Y CN 2827677Y CN 200520073119 CN200520073119 CN 200520073119 CN 200520073119 U CN200520073119 U CN 200520073119U CN 2827677 Y CN2827677 Y CN 2827677Y
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- China
- Prior art keywords
- brake
- chain saw
- arm
- connecting rod
- ribbon
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Abstract
The utility model relates to a brake device on a chain saw, which comprises a brake drum, a brake band, a brake handle, a first connecting rod and a lever element, wherein the brake drum is tightly sheathed on a main shaft of a motor. The brake band is sheathed on an outer ring of the brake drum and is provided with a protruding and extending section, one end of the brake band is fixedly connected to a shell and a pivot of the brake handle is connected to a front handle of the chain saw. The first connecting rod can rotate around the pivot of the front handle and is provided with a first arm section which is connected with the other end of the brake band in a mutual slide mode, and meanwhile, the first arm section is fixedly connected with the brake handle. The lever element is connected to the shell in a pivot mode and is provided with a first supporting arm and a second supporting arm, and the first supporting arm is connected with a button of a switch and is provided with the triggering section of a trigger switch. When the chain saw is in an operating state, the brake band can be sheathed on the brake drum in a relative moving mode. When the chain saw is in a braking state, the second supporting arm pushes the protruding and extending section of the brake band and the brake band generates displacement along the brake drum and is tightly sheathed on the brake drum.
Description
Affiliated technical field
The utility model relates to a kind of hand-held type chain saw, especially the brake gear on the hand-held type chain saw.
Background technology
Hand-held type chain saw in the class instrument of garden generally includes casing, be arranged in the casing motor and by saw chain bar that motor drove.This saw chain bar carries out the high speed rotation so that cut branch etc. under the driving of motor, simultaneously, in cutting process, the chain saw blade can be tied the recoil that forms towards the operator because of running into branch unexpectedly sometimes, thereby can bring even fatal danger to the operator.So, on chain saw, also can be provided with safe brake gear so that motor is braked, the more important thing is and when similar above-mentioned back attack phenomenon occurring, carry out the safety of snub with the protection operator.This class brake gear all has announcement in many patents, as No. the 2273753rd, No. the 3839795th, United States Patent (USP) and No. 4594780 and No. the 0057182nd, European patent and BP, but, the brake gear that these patents disclosed, its structure is all complicated, this has caused the increase of manufacturing cost on the one hand, has increased the weight of whole chain saw device on the other hand, and this has formed very big defective undoubtedly for the chain saw that is used to hand.
Summary of the invention
In order to overcome the deficiency of the brake gear that has chain saw now, the utility model provides a kind of simple in structure, reliable brake gear of handling safety that is used on the chain saw.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of brake gear that is used on the chain saw, described chain saw comprises casing, electric machine main shaft, switch and front hand grip and brake gear.This brake gear comprises brake rim, brake ribbon, brake lever, first connecting rod and lever element.Brake rim is set on the described electric machine main shaft closely.Brake ribbon is set on the outer ring of described brake rim and the one end is fixedly connected on the described casing, and this brake ribbon is provided with projection.Brake lever, it is pivotally connected on described front hand grip.First connecting rod, it can rotate around described front hand grip pivot, and has first arm, and described first arm is slidingly connected mutually with the other end of described brake ribbon and interfixes with described brake lever simultaneously and links to each other.Lever element, it pivotally is connected on the described casing and has first support arm and second support arm, described first support arm is connected with the button of described switch and is provided with the triggering portion of trigger switch, when described chain saw was in running order, described brake ribbon is relatively-movable to be set on the described brake rim; When described chain saw was in braking state, the projection that described second support arm promotes described brake ribbon made described brake ribbon produce displacement and be set in closely on the described brake rim along described brake rim.
The beneficial effects of the utility model are, by the setting of above-mentioned brake rim, brake ribbon, brake lever, first connecting rod and lever element, make that the brake gear that is used on the chain saw of the present utility model is simple in structure, and handling safety is reliable.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the stereogram that corresponding part chain saw of the present utility model and brake gear thereof are in first state.
Fig. 2 is the enlarged drawing of a circle in Fig. 1.
Fig. 3 is the part chain saw of Fig. 1 and the part stereogram that brake gear is in second state thereof.
Fig. 4 is the part chain saw of Fig. 1 and the part stereogram that brake gear is in the third state thereof.
Among the figure: 1. pipe 34. baffles, 35. the other end, 32. first stage clips, 33. 1 ends 37. springs are accommodated by casing 2. electric machine main shafts 3. switches 4. front hand grip 5. back handles 6. brake rims 7. reposition elements 8. brake ribbons 9. first pins 10. brake levers 11. longitudinal troughs 12. first connecting rod 13. projections, 14. second connecting rod 15. bearing pins, 16. lever element 17. first arms, 18. 1 ends 19. second arms, 20. the other end, 21. second pins 22. the 3rd pin, 23. third connecting rods, 24. first support arms, 25. push rods, 26. second support arms, 27. accepting grooves, 28. buttons, 29. second stage clips, 30. triggering sections 31.
The specific embodiment
See figures.1.and.2, comprise casing 1, electric machine main shaft 2, be connected switch 3 and brake gear on the casing 1 corresponding to chain saw of the present utility model.On casing 1, also be provided with and be used for front hand grip 4 and the back handle 5 that both hands grip.
Above-mentioned brake gear as described in background technology, is used for braking when the chain saw course of work meets accident or back attack phenomenon occurs with protection motor or protection operator.This brake gear mainly comprises brake rim 6, brake ribbon 8, brake lever 10, first connecting rod 12, second connecting rod 14 and lever element 16.
This brake rim 6 be set in closely on the described electric machine main shaft 2 with electric machine main shaft 2 synchronous operations.Brake ribbon 8 then is set on the outer ring of described brake rim 6, and one end 18 fixedly is wrapped on casing 1 formed first pin 9 (Fig. 3), and its other end 20 extends in away from the direction of brake rim 6 and is provided with longitudinal trough 11.In addition, the outer surface of described brake ribbon 8 is provided with projection, this projection projection 13 on described brake ribbon that is formed in one.
Above-mentioned lever element 16, it is pivotally connected on described casing 1 formed the 3rd pin 22, and has first support arm 24 and second support arm 26.Described first support arm 24 is connected with button 28 and is provided with triggering portion 30 thereon, and this triggering portion 30 is positioned at the below of switch 3.Second support arm 26 extends towards the direction of brake rim 6, and one first stage clip 32 is connected between the described casing 1 formed baffle 34 and second support arm 26, and has the trend of second support arm 26 being pushed to brake rim 6.In addition, be provided with the accepting groove 27 that is roughly " U " shape in the end of second support arm 26, it is used to accommodate projection 13 (see figure 2)s of above-mentioned brake ribbon 8.
Described brake gear also comprises third connecting rod 14, and this third connecting rod 14 movably is arranged in the casing 1, and the position is provided with vertical slot hole 36 therebetween, and this vertical slot hole 36 slidably is set on the 4th pin 38 that is arranged in the casing 1.What slided in one end 33 of this third connecting rod 14 is set on brake lever 10 formed second pins 21, and the other end 35 is extended to switch 3 and can be triggered or cut-off switch 3 with the triggering portion 30 of described lever element 16.In addition, spring 37 is connected between casing 1 and this third connecting rod 14 and its elastic force is dragged to the end 35 of this third connecting rod 14 between the triggering portion 30 of switch 3 and lever element 16.
The working method and the brake modes of chain saw of the present utility model are described below respectively.As depicted in figs. 1 and 2, when needs make that described chain saw is in running order, brake lever 10 is pressed to front hand grip 4, first connecting rod 17 rotation counterclockwise that pin 21 feasible and on it is fixedly linked, like this, first arm 17 of first connecting rod 12 will promote the end 20 of brake ribbon 8 backward, thereby brake ribbon 8 and brake rim 6 are unclamped mutually, again the button 28 of switch 3 is depressed and is overcome the elastic force of first stage clip 32, make the triggering part 30 of coupled lever element 16 move up and elect the end 35 of second connecting rod 14 then, thereby make triggering portion 30 trigger switches 3, thereby just be in normal operating conditions with the brake rim 6 tight electric machine main shafts 2 that link to each other; As shown in Figure 3, when needs make that described chain saw is in braking state, the button 28 of trip switch 3, make the triggering portion 30 of lever element 16 and the end 35 of second connecting rod 14 break away from switch 3 and make switch 3 be in off-state, second support arm 26 of lever element 16 rotation counterclockwise obliquely under the effect of first stage clip 32 simultaneously, make the bottom surface of the accepting groove 27 on it with regard to the projection 13 of the described brake ribbon of ejection, thereby and make described brake ribbon 8 around the outer ring of brake rim 6 towards direction away from brake rim 5, promptly towards the direction of its end 20, move, its other end 18 is to be fixedly connected on the casing 1 in addition, so, brake ribbon 8 is held tightly gradually on described brake rim 6, has also promptly braked rotation with its electric machine main shaft that closely links to each other 2 thereby braked brake rim 6.In addition, as shown in Figure 4, critical fortuitous event appears when chain saw is worked, as when back attack phenomenon occurring, in the button 28 of trip switch 3, push brake lever 10 to position, simultaneously by the effect of the elastic pressuring spring 29 of reposition element 7 away from front hand grip 4, make first arm 17 of first connecting rod 12 be rotated in a clockwise direction rapidly, thereby strain the end 20 of brake ribbon 8 fast and brake ribbon 8 packing tightly tightly carried out snub on brake rim 6.
As seen, the utility model provides a kind of brake gear that is used on the chain saw, and it is simple in structure, and handling safety is reliable, and this can reduce production costs, again can the more effective safety in utilization of protecting the operator.
Claims (7)
1. the brake gear on the chain saw, described chain saw comprises casing, electric machine main shaft, switch and front hand grip, it is characterized in that:
Described brake gear comprises:
Brake rim, it is set on the described electric machine main shaft closely;
Brake ribbon, it is set on the outer ring of described brake rim and the one end is fixedly connected on the described casing, and described brake ribbon is provided with projection;
Brake lever, it is pivotally connected on described front hand grip;
First connecting rod, it can rotate around described front hand grip pivot, and has first arm, and described first arm is slidingly connected mutually with the other end of described brake ribbon and interfixes with described brake lever simultaneously and links to each other;
Lever element, it pivotally is connected on the described casing and has first support arm and second support arm, described first support arm is connected with the button of described switch and is provided with the triggering portion of trigger switch, when described chain saw was in running order, described brake ribbon is relatively-movable to be set on the described brake rim; When described chain saw was in braking state, the projection that described second support arm promotes described brake ribbon made described brake ribbon produce displacement and be set in closely on the described brake rim along described brake rim.
2. brake gear according to claim 1 is characterized in that: second support arm of described lever element be provided be roughly " U " shape accepting groove to accommodate the projection of described brake ribbon.
3. brake gear according to claim 1 is characterized in that: the described projection projection on described brake ribbon that is formed in one.
4. the brake gear that is used on the chain saw according to claim 1 is characterized in that: a stage clip is connected between second support arm of described casing and described lever element.
5. brake gear according to claim 1 is characterized in that: described brake gear also comprises second connecting rod, and it movably is connected on the described casing and can triggers described switch with the triggering portion of described lever element or disconnect described switch.
6. brake gear according to claim 1 is characterized in that: described brake gear also comprises reposition element, and described first connecting rod is provided with second arm, and described second arm is connected with described reposition element phase pivot.
7. brake gear according to claim 6, it is characterized in that: described reposition element comprises third connecting rod, push rod and is set in stage clip on the push rod, the two ends of wherein said third connecting rod are connected with described push rod phase pivot with second arm of described pivot element respectively, and described push rod and described stage clip are housed in and are formed on accommodating in the pipe on the described casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073119 CN2827677Y (en) | 2005-06-27 | 2005-06-27 | Brake device on chain saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073119 CN2827677Y (en) | 2005-06-27 | 2005-06-27 | Brake device on chain saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2827677Y true CN2827677Y (en) | 2006-10-18 |
Family
ID=37079232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520073119 Expired - Fee Related CN2827677Y (en) | 2005-06-27 | 2005-06-27 | Brake device on chain saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2827677Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101528430B (en) * | 2006-10-19 | 2011-05-11 | 富世华智诺株式会社 | Brake system of chain saw and chain saw |
| CN101570027B (en) * | 2008-04-30 | 2013-01-30 | 苏州宝时得电动工具有限公司 | Electric tool brake apparatus |
| CN103629271A (en) * | 2012-08-21 | 2014-03-12 | 宁波奇亚园林工具有限公司 | Mechanical brake structure |
| CN107856130A (en) * | 2017-12-18 | 2018-03-30 | 江门市锦汉实业有限公司 | A kind of chain saw brake side cover |
| CN114378903A (en) * | 2021-11-29 | 2022-04-22 | 浙江亚特电器股份有限公司 | Brake mechanism for electric chain saw and electric chain saw |
| WO2023197732A1 (en) * | 2022-04-15 | 2023-10-19 | 浙江白马科技有限公司 | Garden tool |
-
2005
- 2005-06-27 CN CN 200520073119 patent/CN2827677Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101528430B (en) * | 2006-10-19 | 2011-05-11 | 富世华智诺株式会社 | Brake system of chain saw and chain saw |
| CN101570027B (en) * | 2008-04-30 | 2013-01-30 | 苏州宝时得电动工具有限公司 | Electric tool brake apparatus |
| CN103629271A (en) * | 2012-08-21 | 2014-03-12 | 宁波奇亚园林工具有限公司 | Mechanical brake structure |
| CN103629271B (en) * | 2012-08-21 | 2016-03-02 | 宁波奇亚园林工具有限公司 | A kind of mechanical brake structure |
| CN107856130A (en) * | 2017-12-18 | 2018-03-30 | 江门市锦汉实业有限公司 | A kind of chain saw brake side cover |
| CN114378903A (en) * | 2021-11-29 | 2022-04-22 | 浙江亚特电器股份有限公司 | Brake mechanism for electric chain saw and electric chain saw |
| WO2023197732A1 (en) * | 2022-04-15 | 2023-10-19 | 浙江白马科技有限公司 | Garden tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Ding Xiuhua Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061018 Termination date: 20090727 |