CN201389879Y - Improved electric chain saw brake device - Google Patents
Improved electric chain saw brake device Download PDFInfo
- Publication number
- CN201389879Y CN201389879Y CN200920151335U CN200920151335U CN201389879Y CN 201389879 Y CN201389879 Y CN 201389879Y CN 200920151335 U CN200920151335 U CN 200920151335U CN 200920151335 U CN200920151335 U CN 200920151335U CN 201389879 Y CN201389879 Y CN 201389879Y
- Authority
- CN
- China
- Prior art keywords
- brake
- chain saw
- output shaft
- torsion spring
- clutch
- 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
Links
Images
Landscapes
- Sawing (AREA)
Abstract
The utility model discloses an improved electric chain saw brake device comprising a brake structure and a clutch structure. The clutch structure comprise a gearwheel mounted on an output shaft of a gearbox and a torsion spring positioned between the output shaft and the gearwheel; a brake rod capable of sliding upwards and downwards is mounted in the brake structure; the clutch structure further comprises a brake clutch sleeve mounted on the gearwheel; the torsion spring, the free end of which is matched with the inside track of the brake clutch sleeve, is fixed on the output shaft; and the outside track of the brake clutch sleeve is matched with the lower end of the brake rod. The brake clutch sleeve is matched with the brake rod, so that the contact area is large; the phenomena of slippage and dislocation are avoided; the brake performance is reliable; and the abrasion is less, thereby prolonging the service life of the brake device.
Description
Technical field:
The utility model relates to a kind of hand-held type chain saw, especially relates to a kind of brake gear of electric chain saw.
Background technology:
Electric chain saw is in working angles, and the head of chain saw blade can run into harder object (such as tree knot, the artificial metal object that is provided with etc.) unavoidably, at this moment, chain saw will make progress and/or recoil towards the operator backward, serious threat operator's life security, for this reason, electric chain saw must be provided with brake gear.
At present the pattern of electric chain saw brake gear is varied, and Granted publication number promptly discloses a kind of electric chain saw stop device that brakes for the Chinese utility model patent of CN 201092067Y.See shown in Figure 1: this electric chain saw brake stop device comprises brake drive mechanism 1 and clutch structure 2; Wherein, the clutch drive mechanism comprise the gear wheel 22 that is installed on the output shaft of gear-box 21 and be located at output shaft 21 and gear wheel 22 between torsion spring 23, an end and the output shaft 21 of torsion spring 23 are affixed, the other end for for free end and with gear wheel 22 movingly; Brake is equipped with the brake lever 11 that can slide up and down in the drive mechanism 1, this brake lever 11 is in its lower end when the next can stir free end on the torsion spring 23, torsion spring 23 is unclamped and the cooperating of gear wheel 22, thereby cut off being rotationally connected synchronously between gear wheel 22 and the output shaft 21; Simultaneously, torsion spring 23 can not rotate under external force, and the output shaft 21 affixed with it can not rotate, and has overcome the problem that output shaft 21 inertia rotate, and makes the chain saw blade realize anxious stopping.This electric chain saw brake stop device is because brake lever directly cooperates with the free end of torsion spring 23, because torsion spring 23 easy deformation occur skidding and inconsistent phenomenon between brake lever 11 and the torsion spring 23 easily, braking ability is also unreliable.In addition, also need change after the distortion of torsion spring 23, influence the service life of brake gear, very trouble.
The utility model content:
The purpose of this utility model is to provide a kind of improved electric chain saw brake gear, and it has rational in infrastructure, stable performance, long service life, operates reliable characteristics more.
For achieving the above object, improved electric chain saw brake gear of the present utility model includes brake structure and clutch structure, wherein, clutch structure includes gear wheel and the torsion spring between output shaft and gear wheel that is installed on the output shaft of gear-box, the brake lever that can slide up and down is installed in the brake structure, described clutch structure also includes a brake clutch cover, this brake clutch cover is installed on the gear wheel, torsion spring is fixed on the output shaft, its free end cooperates with brake clutch cover inner ring, and the outer ring of brake clutch cover then cooperates with the brake lever lower end.
Described brake clutch cover inner ring and outer ring form the projection that cooperates with torsion spring and brake lever respectively.
The protruding contacted part of described brake lever lower end and brake clutch cover outer ring is plane.
The beneficial effects of the utility model are: it adopts the brake clutch cover and cooperates with brake lever, and contact area is big, can not produce and skid and inconsistent phenomenon, and not only braking ability is reliable, and it is less to wear and tear, and can prolong the service life of brake gear.
Description of drawings:
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is the structural representation of existing electric chain saw brake gear;
Fig. 2 is a structural representation of the present utility model;
Fig. 3 is a brake clutch cover structural representation of the present utility model;
Fig. 4 is the sectional view of brake lever of the present utility model and brake clutch cover mating part.
The specific embodiment:
The following stated only is preferred embodiment of the present utility model, does not therefore limit protection domain of the present utility model.
See that Fig. 2 is to shown in Figure 4: improved electric chain saw brake gear of the present utility model includes brake structure 8 and clutch structure 9, wherein, the brake lever 81 that can slide up and down is installed in the brake structure 8; Clutch structure 9 includes gear wheel 92, torsion spring 93 and the brake clutch cover 94 that is installed on the output shaft of gear-box 91, wherein, brake clutch cover 94 is installed on the gear shaft that is convexly set on gear wheel 92 rear end faces, the rear end of torsion spring 93 is fixed on the output shaft 91, and its front end (free end) cooperates with projection 941 in brake clutch cover 94 inner rings; The outer ring of brake clutch cover 94 has the projection 942 that another cooperates with brake lever 11 lower ends, and brake lever 11 lower ends are plane with projection 942 parts that contact 111, and projection 942 sides towards brake lever 11 are the plane also, and both contact with the plane.
During electric chain saw work, gear wheel 92 rotates, and torsion spring 93 and brake clutch cover 94 rotate thereupon, and the torsion spring 93 that is fixed together with output shaft 91 drives output shaft 91 rotations simultaneously.When electric chain saw need brake, brake lever 11 is to lower slider, the projection 942 of brake clutch cover 94 outer rings is blocked in its lower end, torsion spring 93 stops operating, and at this moment, torsion spring 93 internal diameter under the effect of opposite force becomes big, unclamp and the cooperating of gear wheel 92, gear wheel 92 idle running, output shaft 91 stops operating, thereby realizes the anxious purpose of stopping of chain saw blade.
Claims (3)
1. improved electric chain saw brake gear, include brake structure (8) and clutch structure (9), wherein, clutch structure (9) include the gear wheel (92) that is installed on the output shaft of gear-box (91) and be positioned at output shaft (91) and gear wheel (92) between torsion spring (93), the brake lever that can slide up and down (81) is installed in the brake structure (8), it is characterized in that: described clutch structure also includes a brake clutch cover (94), this brake clutch cover (94) is installed on the gear wheel (92), torsion spring (93) is fixed on the output shaft (91), its free end cooperates with brake clutch cover (94) inner ring, and the outer ring of brake clutch cover (94) then cooperates with brake lever (11) lower end.
2. improved electric chain saw brake gear according to claim 1 is characterized in that: described brake clutch cover (94) inner ring and outer ring form projection (941), (942) that cooperate with torsion spring (93) and brake lever (81) respectively.
3. improved electric chain saw brake gear according to claim 2 is characterized in that: the contacted part of projection (942) of described brake lever (11) lower end and brake clutch cover (94) outer ring is plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920151335U CN201389879Y (en) | 2009-04-16 | 2009-04-16 | Improved electric chain saw brake device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920151335U CN201389879Y (en) | 2009-04-16 | 2009-04-16 | Improved electric chain saw brake device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201389879Y true CN201389879Y (en) | 2010-01-27 |
Family
ID=41596702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920151335U Expired - Fee Related CN201389879Y (en) | 2009-04-16 | 2009-04-16 | Improved electric chain saw brake device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201389879Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113070921A (en) * | 2021-03-18 | 2021-07-06 | 山东工业职业学院 | Automatic high-safety cutting device for plates |
-
2009
- 2009-04-16 CN CN200920151335U patent/CN201389879Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113070921A (en) * | 2021-03-18 | 2021-07-06 | 山东工业职业学院 | Automatic high-safety cutting device for plates |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201458439U (en) | Rope inversing machine | |
| CA2506430A1 (en) | Blade stop components and roller bearing clutch design for a power tool | |
| CN201389879Y (en) | Improved electric chain saw brake device | |
| CN200984832Y (en) | Ratchet type braking device | |
| CN201092068Y (en) | Electric chain saw | |
| CN201873483U (en) | Automatic brake device of winch | |
| CN201128033Y (en) | Electric chain saw protective plate switch brake linkage | |
| CN205951638U (en) | Automatic traction device | |
| CN201092067Y (en) | Braking stop device of electric chain saw | |
| CN101865219A (en) | Cylinder structure of hydraulic clutch brake | |
| CN201769987U (en) | Two-roller integrated marine anchor windlass | |
| ATE462671T1 (en) | BOBBIN BRAKE FOR A WINDING DEVICE OF A TEXTILE MACHINE PRODUCING CROSS BOBBINS | |
| CN201028255Y (en) | Toggle emergency braking device | |
| CN202301591U (en) | Automatic resetting disc brake | |
| CN201075917Y (en) | Pruning machine | |
| CN109163036B (en) | Fishing boat stern shaft braking device | |
| CN205739858U (en) | A kind of novel unidirectional anti-running limiter of speed with speed monitoring | |
| CN209755346U (en) | Clutch device of cutter driving mechanism of paper cutter | |
| CN105923499A (en) | Novel automatic reset unidirectional anti-sliding speed governor capable of monitoring speed | |
| CN203077410U (en) | Novel gasoline chain saw | |
| CN201517575U (en) | Floating normally open type brake | |
| CN206664838U (en) | Split double-acting caliper | |
| CN205739857U (en) | The unidirectional limiter of speed of new type auto anti-running | |
| CN202811913U (en) | Swing caliper brake | |
| CN204391616U (en) | A kind of small-sized hand pulls wire grip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100127 Termination date: 20110416 |