CN213319853U

CN213319853U - Speed-reducing and torque-increasing mechanism of multifunctional electric tool

Info

Publication number: CN213319853U
Application number: CN202021916570.2U
Authority: CN
Inventors: 刘秋华; 丁峰
Original assignee: Nantong Dongke Tools Co ltd
Current assignee: Nantong Dongke Tools Co ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-06-01
Anticipated expiration: 2030-09-04

Abstract

The utility model provides a mechanism of multi-functional electric tool's speed reduction increase torsion, including rear end housing, motor, bearing frame and joint, the inside power that is equipped with of rear end housing, the inside motor that is equipped with of motor cover, motor output left end is equipped with the shaft coupling, the inside first reduction gear that is equipped with of motor cover, the ball bearing outside is equipped with the bearing frame, driven shaft left end face is equipped with the joint, compares with prior art, the utility model discloses following beneficial effect has: the utility model discloses a mechanism of multi-functional electric tool's speed reduction increase and turn round can play the effect of speed reduction increase and turn round through the cooperation of the first reduction gear and the second reduction gear that set up, and during the screw on rotatory working of plastics, the effect of protecting the screw hole can be played through bearing frame, fixed column, driven gear, spring and the second planet carrier that sets up, makes the screw be difficult to receive pressure and leads to smooth silk too big, has increaseed the utility model discloses a practicality.

Description

Speed-reducing and torque-increasing mechanism of multifunctional electric tool

Technical Field

The utility model relates to a multi-functional electric tool's mechanism that turns round that slows down belongs to the electric tool field.

Background

An electric screwdriver, also known as a screwdriver or an electric screwdriver, is an electric tool for screwing and unscrewing screws. The electric tool is provided with a mechanism for adjusting and limiting torque, is mainly used for assembly lines, and is one of necessary tools for most production enterprises.

When the screw of present electric screwdriver on rotatory working of plastics, when too big to how much according to the pressure degree, cause the smooth silk of screw easily, lead to the inside screw hole of working of plastics to damage unable fastening bolt to unable fixed action of playing, present the utility model discloses in order to solve above problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a mechanism that turns round is increased in speed reduction of multi-functional electric tool, through increasing bearing frame, fixed column, driven gear, spring and second planet carrier to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above purpose, the present invention is realized by the following technical solution: a speed-reducing and torque-increasing mechanism of a multifunctional electric tool comprises a rear end cover, a motor, a sun wheel, a bearing seat and a joint, wherein a power supply is arranged inside the rear end cover, a motor cover is arranged on the left end face of the rear end cover, a front end cover is arranged on the left end face of the motor cover, the motor is arranged inside the motor cover, a coupler is arranged at the left end of the output of the motor, a driving shaft is arranged on the left end face of the coupler, a first speed reducer is arranged inside the motor cover and comprises a first sun wheel, a first planet wheel, a first gear ring and a first planet carrier, the driving shaft is arranged inside the first sun wheel, the first planet wheel is arranged outside the first sun wheel, the first gear ring is arranged outside the first planet wheel, the first planet wheel is provided with the first planet carrier on the left side, a rotating shaft is arranged on the left side of the first planet carrier, the improved planetary gear transmission is characterized in that a second sun gear is arranged inside the second speed reducer, a rotating shaft is arranged inside the second sun gear, a second planet carrier is arranged on the left side of the second sun gear, a fixed shaft is arranged on the right side of the second planet carrier, a second planet gear is arranged outside the fixed shaft, an inner gear ring is arranged inside the second planet carrier, a driven gear is arranged inside the inner gear ring, a driven shaft is arranged inside the driven gear, a ball bearing is arranged at the middle end of the driven shaft, a ball bearing is arranged outside the driven shaft, a bearing seat is arranged outside the ball bearing, a fixed column is arranged on the right side of the bearing seat, a spring is arranged outside the fixed column, a sealing cover is arranged on the left end face of the front end cover, a fixed block.

Furthermore, a circular through groove is formed in the bearing seat, the outside of the ball bearing is in interference connection with the inside of the circular through groove, and the driven shaft is in interference connection with the inside of the ball bearing.

Further, the springs are four, the right side of the bearing seat is provided with four fixing columns, and the left ends of the inner portions of the four springs are fixed to the outer portions of the four fixing columns through welding.

Further, the driven shaft is a movable mechanism, and the movable range of the driven shaft is arranged in the circular sliding groove.

Further, the outer surface of the motor cover is rolled with anti-skid grains.

The utility model has the advantages that: the utility model discloses a mechanism of multi-functional electric tool's speed reduction increase and turn round can play the effect of speed reduction increase and turn round through the cooperation of the first reduction gear and the second reduction gear that set up, and during the screw on rotatory working of plastics, the effect of protecting the screw hole can be played through bearing frame, fixed column, driven gear, spring and the second planet carrier that sets up, makes the screw be difficult to receive pressure and leads to smooth silk too big, has increaseed the utility model discloses a practicality.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic structural view of a speed reducing and torque increasing mechanism of a multifunctional electric tool according to the present invention;

fig. 2 is a sectional view of the speed reducing and torque increasing mechanism of the multifunctional electric tool of the present invention;

fig. 3 is a schematic view of the protection stop output of the speed reduction and torque increase mechanism of the multifunctional electric tool according to the present invention;

fig. 4 is a right sectional view of the second planet carrier of the speed-reducing and torque-increasing mechanism of the multifunctional electric tool of the present invention;

FIG. 5 is a right side view of the bearing seat of the speed reducing and torque increasing mechanism of the multi-functional electric tool of the present invention;

in the figure: 1-rear end cover, 2-suspension ring, 3-motor cover, 4-front end cover, 5-sealing cover, 6-joint, 7-motor, 8-coupling, 9-first sun gear, 10-first planet gear, 11-first gear ring, 12-first planet carrier, 13-second speed reducer, 14-second planet carrier, 141-fixed shaft, 142-inner gear ring, 15-driven gear, 16-driven shaft, 17-bearing seat, 141-fixed column, 172-ball bearing, 173-spring and 18-circular chute.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

Referring to fig. 1 to 5, the present invention provides a technical solution: a speed reduction and torque increase mechanism of a multifunctional electric tool comprises a rear end cover 1, a motor 7, a bearing seat 17 and a joint 6, wherein a power supply is arranged inside the rear end cover 1, a motor cover 3 is arranged on the left end face of the rear end cover 1, a front end cover 4 is arranged on the left end face of the motor cover 3, the motor 7 is arranged inside the motor cover 3, a coupling 8 is arranged at the output left end of the motor 7, a driving shaft is arranged on the left end face of the coupling 8, a first speed reducer is arranged inside the motor cover 3 and comprises a first sun wheel 9, a first planet wheel 10, a first gear ring 11 and a first planet carrier 12, a driving shaft is arranged inside the first sun wheel 9, a first planet wheel 10 is arranged outside the first sun wheel 9, a first gear ring 11 is arranged outside the first planet wheel 10, a first planet carrier 12 is arranged on the left side of the first planet carrier 12, a rotating shaft is arranged on the left side, a second sun gear is arranged inside the second speed reducer 13, a rotating shaft is arranged inside the second sun gear, a second planet carrier 14 is arranged on the left side of the second sun gear, a fixed shaft 141 is arranged on the right side of the second planet carrier 14, a second planet gear is arranged outside the fixed shaft 141, an inner gear ring 142 is arranged inside the second planet carrier 14, a driven gear 15 is arranged inside the inner gear ring 142, a driven shaft 16 is arranged inside the driven gear 15, a ball bearing 172 is arranged at the middle end of the driven shaft 16, a ball bearing 172 is arranged outside the driven shaft 16, a bearing seat 17 is arranged outside the ball bearing 172, a fixed column 171 is arranged on the right side of the bearing seat 17, a spring 173 is arranged outside the fixed column 171, a sealing cover 5 is arranged on the left end face of the front end cover 4, a.

The inside circular logical groove that is equipped with of bearing frame 17, ball bearing 172 outside and the inside interference fit connection of circular logical groove, driven shaft 16 and the inside interference fit connection of ball bearing 172, through the cooperation of bearing frame 17 and ball bearing 172, realize driven shaft 16 side to side slip.

Spring 173 is equipped with four, and the bearing frame 17 right side is equipped with four fixed columns 171, and four springs 173 inside left ends pass through welded fastening respectively in four fixed column 171 outsides, through four springs 173 that set up, make driven shaft 16 return fast.

The driven shaft 16 is a movable mechanism, and the movable range of the driven shaft 16 is in the circular sliding groove 18.

The outer surface of the motor cover 3 is rolled with anti-skid lines to increase the friction force when holding.

As an embodiment of the present invention: in the actual use process, the motor cover 3 is held by a hand, a screwdriver bit is mounted on the joint 6, the screwdriver bit is aligned to a screw, the motor 7 is started to be communicated with a power supply, the output shaft of the motor 7 drives the first planet wheel 10 to rotate, the first planet wheel 10 is meshed with the first gear ring 11, meanwhile, the first planet wheel 10 drives the first planet carrier 12 to rotate, one-stage speed reduction and torque increase are carried out, the first planet carrier 12 drives the rotating shaft to rotate, the rotating shaft drives the second sun wheel to rotate, the second sun wheel drives the second planet wheel to rotate, the second planet wheel drives the second planet carrier 14 to rotate, secondary speed reduction and torque increase are carried out, the inner gear ring 142 inside the second planet carrier 14 is meshed with the driven gear 15, the driven gear 15 drives the driven shaft 16 to rotate, and the driven shaft 16 drives the.

As an embodiment of the present invention: in the actual use process, when the screw on the plastic part is rotated, if the pressing force is too high, the screw is easy to slide, the screw cannot be fixed in the threaded hole, when the hand holds the motor cover 3 and presses the screw through the bit with too much force, the driven shaft 16 drives the ball bearing 172 to move rightwards, at this time, the spring 173 is stressed and compressed, the driven gear 15 on the driven shaft 16 is separated from the inner gear ring 142 inside the second planet carrier 14, at this time, the second planet carrier 14 can not transmit torque to the bit through the driven shaft 16, the bit stops rotating, for example, as shown in fig. 3, when the hand holds the motor cover 3 and the screw force is returned to normal by pressing the screwdriver bit, the spring 173 pushes the bearing seat 17 to move leftwards and return under the action of the elastic force, at the moment, the driven gear 15 is engaged with the inner gear ring 142, the screwdriver bit rotates again, the function of protecting the threaded hole is achieved through the matching of the arranged bearing seat 17 and the spring 173.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent embodiments without departing from the scope of the present invention, but all the technical matters of the present invention are within the scope of the present invention.

Claims

1. The utility model provides a mechanism that multi-functional electric tool's speed reduction increased torsion, includes rear end cap, motor, sun gear, bearing frame and joint, its characterized in that: the rear cover is internally provided with a power supply, the left end face of the rear cover is provided with a motor cover, the left end face of the motor cover is provided with a front end cover, the motor cover is internally provided with a motor, the left end of the output of the motor is provided with a coupler, the left end face of the coupler is provided with a driving shaft, the motor cover is internally provided with a first speed reducer, the first speed reducer comprises a first sun wheel, a first planet wheel, a first gear ring and a first planet carrier, the driving shaft is arranged in the first sun wheel, the first planet wheel is externally provided with the first planet wheel, the first planet wheel is externally provided with the first gear ring, the first planet carrier is arranged on the left side of the first planet wheel, the rotating shaft is arranged on the left side of the first planet carrier, the motor cover is internally provided with a second speed reducer, the second sun wheel is arranged in the second speed reducer, the rotating shaft is arranged in the second sun, the improved planetary gear train comprises a first planetary carrier and is characterized in that a fixed shaft is arranged on the right side of the first planetary carrier, a first planetary gear is arranged outside the fixed shaft, an inner gear ring is arranged inside the first planetary carrier, a driven gear is arranged inside the inner gear ring, a driven shaft is arranged inside the driven gear, a ball bearing is arranged at the middle end of the driven shaft, a ball bearing is arranged outside the driven shaft, a bearing seat is arranged outside the ball bearing, a fixed column is arranged on the right side of the bearing seat, a spring is arranged outside the fixed column, a sealing cover is arranged on the left end face of a front end cover, a fixed block is arranged inside.

2. The speed reducing and torque increasing mechanism of a multifunctional electric tool according to claim 1, characterized in that: a circular through groove is formed in the bearing seat, the outside of the ball bearing is in interference connection with the inside of the circular through groove, and the driven shaft is in interference connection with the inside of the ball bearing.

3. The speed reducing and torque increasing mechanism of a multifunctional electric tool according to claim 1, characterized in that: the spring is equipped with four, the bearing frame right side is equipped with four fixed columns, four the inside left end of spring is respectively through welded fastening in four fixed column outsides.

4. The speed reducing and torque increasing mechanism of a multifunctional electric tool according to claim 1, characterized in that: the driven shaft is a movable mechanism, and the movable range of the driven shaft is arranged in the circular sliding groove.

5. The speed reducing and torque increasing mechanism of a multifunctional electric tool according to claim 1, characterized in that: the outer surface of the motor cover is rolled with anti-skid grains.