CN214980794U

CN214980794U - Improved structure of U82 chain saw motor brake gear shaving

Info

Publication number: CN214980794U
Application number: CN202120956072.9U
Authority: CN
Inventors: 方格; 谭超; 王翔
Original assignee: Zhejiang Roshow Electromechanical Co ltd
Current assignee: Zhejiang Roshow Electromechanical Co ltd
Priority date: 2021-05-07
Filing date: 2021-05-07
Publication date: 2021-12-03
Anticipated expiration: 2031-05-07

Abstract

The utility model relates to a U82 chain saw motor brake shaving improvement structure. The electric chain drama models and the use conditions at home and abroad are many, and except for a normal working state, a safety protection state, namely similar emergency stop requirements, is indispensable. However, most electrical chains suffer from a lack of sensitivity. The utility model discloses a rotating shaft, the rotating shaft in the torsional spring of impressing, torsional spring and pivot become one, the front end of pivot sets up the rotor, and the end sets up the gear, gear contact torsional spring contact, rotor spindle nose output torsion is conducted to the gear by the torsional spring and drives the chain saw blade, gear internal diameter and external diameter clearance fit, the cooperation department of gear and axle sets up set screw, the screw on set up the meson. The utility model discloses satisfying under the prerequisite that product output torsion required, the big torsion that produces through the torsional spring reaches brake motor's requirement fast, and the brake time is short, and the loss to gear and braking structure is little, and the structure is firm.

Description

Improved structure of U82 chain saw motor brake gear shaving

Technical Field

The utility model relates to a U82 chain saw motor brake shaving improvement structure.

Background

The high capacity and the full demand of household power tools and garden tools for use and consumption has led to an extraordinary activity in the production and consumer market for a class of products including electric chain saws. The existing chain saw motor has been established in the U.S. market and in the native environment for many years, and although the motor technology is basically mature, there is still room for innovation in the use reliability except for the opening performance and the efficiency.

Electric chain drama models and use conditions at home and abroad are many, except for a normal working state, a safety protection state is indispensable to meet the requirement of similar emergency stop, and because the electric chain saw can rebound when cutting a hard object, the electric chain saw needs to be braked emergently at the moment, so that the chain stops moving within a short time. However, most electrical chains suffer from a lack of sensitivity.

SUMMERY OF THE UTILITY MODEL

The utility model discloses shortcoming to prior art exists provides a U82 chain saw motor brake shaving improvement structure, can effective quick brake motor, promotes fail safe nature, reduces gear and braking element wearing and tearing, increases product life.

Therefore, the utility model adopts the following technical proposal: u82 chain saw motor brake shaving improvement structure, including the pivot, its characterized in that the pivot on the torsional spring of impressing, torsional spring and pivot become an organic whole, the front end of pivot sets up the rotor, the end sets up the gear, gear contact torsional spring contact, rotor spindle nose output torsion is conducted to the gear by the torsional spring and is driven the chain saw blade, gear internal diameter and axle external diameter clearance fit, the cooperation department of gear and axle sets up the set screw, the screw on set up the meson.

Preferably, two oil storage grooves are arranged at the tail end of the rotating shaft, and R0.3 round corners are machined in the oil storage grooves.

Preferably, the gear is flared at the end.

Preferably, the meson has a hardness of at least 50 HRC.

Preferably, the oil storage tank is filled with high-temperature grease.

Preferably, the matching part of the torsion spring and the rotating shaft is also filled with high-temperature grease.

The utility model discloses satisfying under the prerequisite that product output torsion required, the big torsion that produces through the torsional spring reaches brake motor's requirement fast, and the brake time is short, and the loss to gear and braking structure is little, and the structure is firm. The difference and traditional flat bit architecture of axle tail, the utility model discloses the circular slot structure of pivot has improved and has picked more effective storage lubricating grease of ability when the tooth.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a cross-sectional view taken along line A-A of the present invention

Fig. 3 is a sectional view of the present invention taken along line B-B.

Fig. 4 is a partially enlarged view of fig. 2 at C.

Fig. 5 is a schematic structural view of the torsion spring.

Fig. 6 is a schematic view of the structure of the shaft.

Fig. 7 is a perspective view of the gear.

Fig. 8 is a cross-sectional view of the gear.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The improved structure for U82 chain saw motor brake shaving shown in fig. 1-8 comprises a front support 3 and a rotating shaft 11, wherein a first rolling bearing 10 and a second rolling bearing 7 are respectively arranged at two ends of the rotating shaft, a screw 8 and a meson 9 are arranged on the front support, a torsion spring 2 is pressed in the rotating shaft, the torsion spring and the rotating shaft are integrated, a rotor 4 is arranged at the front end of the rotating shaft, a gear 1 is arranged at the tail end of the rotating shaft, the gear contacts with a contact of the torsion spring, the output torque of a rotor spindle head is transmitted to the gear by the torsion spring to drive a chain saw blade, the inner diameter of the gear is in clearance fit with the outer diameter of the shaft, a positioning screw 5 is arranged at the matching position of the gear and the shaft, and the meson 6 is arranged on the screw. The end of the rotating shaft is provided with two oil storage tanks 13, and R0.3 round corners are processed in the oil storage tanks. The gear is formed with an outer flare 14 at the end. The meson has a hardness of at least 50 HRC. High-temperature lubricating grease is filled in the oil storage tank. The matching part of the torsion spring and the rotating shaft is also filled with high-temperature lubricating grease 12.

The working process of the utility model is as follows: after the motor inputs 230V alternating voltage, the rotor rotates in an electromagnetic field, the torsion spring is pressed into the shaft and integrated with the shaft, the gear contacts with a contact of the torsion spring, and the output torque of the shaft head of the rotor is transmitted to the gear by the torsion spring to drive the chain saw blade. Chain emergency braking function: after the power is cut off, the rotor keeps inertia and needs to add braking force reversely, the gear bears the force opposite to the rotation direction of the motor by a baffle plate in the braking device, the torsion spring generates a torsion angle, the torsion spring works to generate a larger force opposite to the working direction of the rotor, and the motor is braked quickly.

The utility model discloses a structural key point lies in: the inner diameter of the gear is in clearance fit with the outer diameter of the shaft, and the gear can freely move in the axial direction when being installed. The gear is locked with an intermediate for limiting, the inner wall of the gear and the shaft are theoretically not interfered and scraped, and the gear needs to apply braking torque to a contact of the torsion spring in the direction taking the axis as a rotation center. The high-temperature miqie 85# lubricating grease is filled in the oil storage tank, and the phenomenon of gear and shaft clamping is prevented.

The utility model discloses satisfying under the prerequisite that product output torsion required, the big torsion that produces through the torsional spring reaches brake motor's requirement fast, and the brake time is short, and the loss to gear and braking structure is little, and the structure is firm. The difference is with traditional axle tail flat position structure, and the round slot structure has improved and has picked the more effective storage lubricating grease of tooth simultaneously.

The above description is only an example of the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

U82 chain saw motor brake shaving improvement structure, including the pivot, its characterized in that the pivot on the torsional spring of impressing, torsional spring and pivot become an organic whole, the front end of pivot sets up the rotor, the end sets up the gear, gear contact torsional spring contact, rotor spindle nose output torque is conducted to the gear by the torsional spring and drives the chain saw blade, gear internal diameter and axle external diameter clearance fit, the cooperation department of gear and axle sets up the set screw, the screw on set up the meson.
2. The improved structure of U82 chain saw motor brake shaving as claimed in claim 1, wherein the end of the shaft is provided with two oil storage grooves, and the oil storage grooves are processed with R0.3 round corners.
3. The improved motor brake shaving structure for the U82 chain saw as claimed in claim 2, wherein the gear is formed with an outward flaring at its distal end.
4. The improved structure of U82 chain saw motor brake shaving as claimed in claim 3, wherein the hardness of the meson is at least 50HRC hardness.
5. The improved structure of U82 chain saw motor brake shaving as claimed in claim 4, wherein the oil storage tank is filled with high temperature grease.
6. The improved structure of U82 chain saw motor brake shaving as claimed in claim 5, wherein the matching part of the torsion spring and the rotation shaft is also filled with high temperature grease.