CN213784546U - Chain saw gear adjusting mechanism - Google Patents
Chain saw gear adjusting mechanism Download PDFInfo
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- CN213784546U CN213784546U CN202021961115.4U CN202021961115U CN213784546U CN 213784546 U CN213784546 U CN 213784546U CN 202021961115 U CN202021961115 U CN 202021961115U CN 213784546 U CN213784546 U CN 213784546U
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Abstract
The utility model belongs to the technical field of felling machine chain saw control, and provides a chain saw gear adjusting mechanism, which comprises a shell, wherein a rotating hole is arranged on the shell; the trigger switch is arranged in the shell and electrically connected with a motor of the chain saw, and a trigger button is arranged on one side, located on the rotating hole, of the trigger switch; the rotating rod is arranged in the rotating hole, the upper end of the rotating rod is connected with a rotating plate arranged on the outer side of the shell, and when the trigger button is pressed by the rotating rod, a motor of the chain saw starts to work; and the limiting structure is arranged on one side of the middle position of the rotating hole and used for limiting the rotating rod at the triggering position or the cutting position at the two ends in the rotating hole. Compared with the prior art, the utility model has the advantages of: the rotating plate drives the rotating rod to rotate in the rotating hole, the trigger button is controlled, the on-off of the motor is controlled, the operation is simple, the control is easy, and the motor control device has the advantages of small size and low cost.
Description
Technical Field
The utility model belongs to the technical field of felling machine chain saw control, concretely relates to chain saw gear adjustment mechanism.
Background
The small-sized hand-held electric chain saw is a hand-held power tool mainly used in industries of forest felling, garden pruning and the like, and a motor drives a chain wheel to drive a sawing chain to rotate around a guide plate to perform cutting operation, so that the aims of cutting and pruning wood, branches and the like are fulfilled.
The existing handheld electric chain saw realizes the control of the on-off of a motor through a lever, and has large volume and high cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to prior art's current situation, and provide a chain saw gear adjustment mechanism.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: a chain saw gear adjusting mechanism is provided, comprising:
the shell is provided with a rotating hole;
the trigger switch is arranged in the shell and electrically connected with a motor of the chain saw, and a trigger button is arranged on one side, located on the rotating hole, of the trigger switch;
the rotating rod is arranged in the rotating hole, the upper end of the rotating rod is connected with a rotating plate arranged on the outer side of the shell, and when the trigger button is pressed by the rotating rod, a motor of the chain saw starts to work;
and the limiting structure is arranged on one side of the middle position of the rotating hole and used for limiting the rotating rod at the triggering position or the cutting position at the two ends in the rotating hole.
In the chain saw gear adjusting mechanism, the limiting structure comprises a cylindrical limiting block, a return spring connected to one end of the limiting block, and a triggering limiting curved surface and a cutting limiting curved surface which are arranged on two sides of the limiting block and tangent to the rotating rod.
In the chain saw gear adjusting mechanism, the limiting block is tangent to the rotating rod, and two ends of the rotating hole are tangent to the rotating rod.
In a chain saw gear adjusting mechanism of foretell, work as the dwang is located when the downthehole trigger position department of dwang, the dwang extrusion trigger button, the dwang with it is tangent to trigger spacing curved surface, and the circuit of chain saw switches on.
In a foretell chain saw gear adjustment mechanism, work as the dwang is located when the downthehole cutting off position department of dwang, the dwang does not extrude trigger button, the dwang with cut off spacing curved surface tangent, the circuit of chain saw cuts off.
In the chain saw gear adjusting mechanism, a handle is sleeved in the rotating plate, and the rotating plate is rotatably connected to the handle.
Compared with the prior art, the utility model has the advantages of: the utility model discloses a chain saw gear adjustment mechanism drives the dwang through the rotor plate and rotates in the rotation hole, controls trigger switch department trigger button, realizes the control to the motor break-make, and the structure is exquisite, easy operation, and easy control, and has advantages small, with low costs.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic view of an interior portion of a housing in a shut-off state according to an embodiment of the present invention;
fig. 3 is a schematic view of the inner part of the housing in a triggered state according to an embodiment of the present invention.
In the figure, 100-housing; 110-rotation hole; 200-trigger switch; 210-a trigger button; 300-rotating rod; 310-a rotating plate; 320-a handle; 400-a limit structure; 410-a limiting block; 420-a return spring; 430-trigger limit curved surface; 440-cutting off the limit curved surface.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1, 2 and 3, the utility model relates to a chain saw gear adjusting mechanism, including: a shell 100, wherein a rotating hole 110 is arranged on the shell 100; a trigger switch 200 disposed in the housing 100, the trigger switch 200 being electrically connected to a motor of the chain saw, the trigger switch 200 having a trigger button 210 disposed on one side of the rotation hole 110; a rotation lever 300 disposed in the rotation hole 110, the rotation plate 310 disposed outside the housing 100 being connected to an upper end of the rotation lever 300, and when the trigger button 210 is pressed by the rotation lever 300, a motor of the chain saw starts to operate; and a limiting structure 400 provided at one side of the middle position of the rotation hole 100 for limiting the rotation lever 300 at the triggering position or the cutting position of both ends in the rotation hole 100.
When the chain saw is used, the rotating plate 310 is rotated to move the rotating rod 300 from the cut-off position in the rotating hole 110 to the trigger position, the rotating rod 300 presses the trigger button 210 at the trigger switch 200, the circuit of the motor of the chain saw is switched on at the moment, the motor starts to work, then the rotating plate 310 is released, the rotating rod 300 is limited on the trigger position by the limiting structure 400, and the motor continues to work. When the operation of the motor needs to be stopped, the rotating plate 310 is rotated to move the rotating rod 300 from the triggering position in the rotating hole 110 to the cut-off position, the rotating rod 300 does not press the trigger button 210 on the trigger switch 200, the trigger button 210 rebounds, at this time, the circuit of the motor is cut off, the motor stops working, then the rotating plate 310 is loosened, the rotating rod 300 is limited on the cut-off position by the limiting structure 400, and the motor keeps the state of stopping working. Therefore the utility model discloses a chain saw gear adjustment mechanism drives dwang 300 through rotor plate 310 and rotates 110 internal rotations in the hole, controls trigger switch 200 department trigger button 210, realizes the control to the motor break-make, and the structure is exquisite, easy operation, and easy control, and has advantages small, with low costs.
The limiting structure 400 comprises a cylindrical limiting block 410, a return spring 420 connected to one end of the limiting block 410, and a triggering limiting curved surface 430 and a cutting limiting curved surface 440 which are arranged on two sides of the limiting block 410 and are tangent to the rotating rod 300, wherein the limiting block 410 is tangent to the rotating rod 300, and two ends of the rotating hole 100 are tangent to the rotating rod 300. When the rotating rod 300 is located at the triggering position in the rotating hole 100, the rotating rod 300 presses the triggering button 210, the rotating rod 300 is tangent to the triggering limit curved surface 430, and the circuit of the chain saw is conducted. When the rotating rod 300 is located at the cutting position in the rotating hole 100, the rotating rod 300 does not press the trigger button 210, the rotating rod 300 is tangent to the cutting limit curved surface 440, and the circuit of the chain saw is cut off.
When the rotating rod 300 is located at the cutting position in the rotating hole 110, one point of the rotating rod 300 is tangent to the cutting limit curved surface 440, the rotating rod 300 abuts against the cutting limit curved surface 440, the other point of the rotating rod 300 is tangent to the cylindrical limit block 410, and the limit block 410 gives a force to the rotating rod 300 pointing to the center of the cutting position, so that the rotating rod 300 is limited and cut in the cutting position; when the rotating plate 310 is rotated to move the rotating rod 300 from the cutting position to the triggering position, the rotating rod 300 extrudes the limiting block 410, the return spring 420 connected to one end of the limiting block 410 is compressed, the return spring 420 is compressed to drive the limiting block 410 to move to one side far away from the rotating rod 300, the rotating rod 300 moves out from the cutting position to enter the triggering position, and the return spring 420 resets to drive the limiting block 410 to return to the original position; when the rotating rod 300 is located at the triggering position in the rotating hole 110, one point of the rotating rod 300 is tangent to the triggering limiting curved surface 430, the rotating rod 300 abuts against the triggering limiting curved surface 430, the other point of the rotating rod 300 is tangent to the cylindrical limiting block 410, and the limiting block 410 provides a force to the rotating rod 300 pointing to the center of the triggering position, so that the rotating rod 300 is limited and triggered. The stop block 410 may be in the form of a cylindrical pin or a steel ball.
The handle 320 is sleeved in the rotating plate 310, and the rotating plate 310 is rotatably connected to the handle 320.
The rotating plate 310 is sleeved at the lower end of the handle 320, when the chain saw is used, the handle 320 is held by hand, and the rotating plate 310 is conveniently moved by the other hand to control the on-off of a motor circuit.
The working principle is as follows: when not in operation, the rotating plate 310 is rotated to place the rotating lever 300 in the cutting position in the rotating hole 110. When the rotating rod 300 is located at the cut-off position in the rotating hole 110, one point of the rotating rod 300 is tangent to the cut-off limiting curved surface 440, the rotating rod 300 abuts against the cut-off limiting curved surface 440, the other point of the rotating rod 300 is tangent to the cylindrical limiting block 410, the limiting block 410 gives a force to the rotating rod 300 pointing to the center of the cut-off position, so that the rotating rod 300 is limited and located in the cut-off position, at this time, the rotating rod 300 does not press the trigger button 210 on the trigger switch 200, the trigger button 210 is in a rebound state, the circuit of the motor is cut off, and the motor does not work;
during operation, when rotating the rotor plate 310 and moving dwang 300 from the position of cutting off to the trigger position, dwang 300 extrudes stopper 410, and the reset spring 420 at stopper 410 one end is connected in the compression, and reset spring 420 compresses, drives stopper 410 and removes to the one side of keeping away from dwang 300, and dwang 300 shifts out from the position of cutting off, gets into the trigger position, and reset spring 420 resets, drives stopper 410 and gets back to original position department. When the rotating rod 300 is located at the triggering position in the rotating hole 110, one point of the rotating rod 300 is tangent to the triggering limiting curved surface 430, the rotating rod 300 abuts against the triggering limiting curved surface 430, the other point of the rotating rod 300 is tangent to the cylindrical limiting block 410, the limiting block 410 provides a force pointing to the center of the triggering position to the rotating rod 300, so that the rotating rod 300 is limited and located in the triggering position, the rotating rod 300 presses the triggering button 210 at the triggering switch 200, the circuit of the motor of the chain saw is switched on at the moment, the motor starts to work, then the rotating plate 310 is loosened, the rotating rod 300 is limited at the triggering position by the limiting structure 400, and the motor continues to work.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein will be apparent to those skilled in the art without departing from the scope and spirit of the invention as defined in the accompanying claims.
Claims (4)
1. A chain saw gear adjustment mechanism, comprising:
the shell is provided with a rotating hole;
the trigger switch is arranged in the shell and electrically connected with a motor of the chain saw, and a trigger button is arranged on one side, located on the rotating hole, of the trigger switch;
the rotating rod is arranged in the rotating hole, the upper end of the rotating rod is connected with a rotating plate arranged on the outer side of the shell, and the rotating plate can be driven to press the trigger switch to enable a motor of the chain saw to start working when rotated;
and the limiting structure is arranged on one side of the middle position of the rotating hole and used for limiting the rotating rod at the triggering position or the cutting position at the two ends in the rotating hole.
2. The chain saw gear adjusting mechanism as recited in claim 1, wherein the limiting structure comprises a cylindrical limiting block, a return spring connected to one end of the limiting block, and a triggering limiting curved surface and a cutting limiting curved surface which are arranged on both sides of the limiting block and tangent to the rotating rod.
3. The chain saw gear adjustment mechanism as recited in claim 2 wherein said stop block is tangent to said rotation rod and said rotation hole has two ends tangent to said rotation rod.
4. The chain saw gear adjustment mechanism as recited in claim 1 wherein said pivotal plate is provided with a handle, said pivotal plate being pivotally connected to said handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021961115.4U CN213784546U (en) | 2020-09-09 | 2020-09-09 | Chain saw gear adjusting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021961115.4U CN213784546U (en) | 2020-09-09 | 2020-09-09 | Chain saw gear adjusting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213784546U true CN213784546U (en) | 2021-07-27 |
Family
ID=76952938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021961115.4U Active CN213784546U (en) | 2020-09-09 | 2020-09-09 | Chain saw gear adjusting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213784546U (en) |
-
2020
- 2020-09-09 CN CN202021961115.4U patent/CN213784546U/en active Active
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