CN209999070U

CN209999070U - Electric screwdriver

Info

Publication number: CN209999070U
Application number: CN201920326204.2U
Authority: CN
Inventors: 童树彬; 石平波
Original assignee: Nanjing Chervon Industry Co Ltd
Current assignee: Nanjing Chervon Industry Co Ltd
Priority date: 2019-03-14
Filing date: 2019-03-14
Publication date: 2020-01-31
Anticipated expiration: 2029-03-14
Also published as: WO2020181768A1

Abstract

The utility model discloses a electric screwdriver, which comprises a shell, a drive assembly, a motor, a power supply, a mounting hole, a connecting part and a connecting part, wherein the shell extends along linear directions and is provided with accommodating cavities, the drive assembly is arranged in the accommodating cavities and comprises a screwdriver head adapter shaft used for connecting a screwdriver head, the motor is used for driving the screwdriver head adapter to rotate, the power supply is used for providing energy for the motor, the drive assembly is arranged along the linear direction and is provided with the mounting hole used for being connected to the shell, the accommodating space is internally provided with the connecting part used for connecting the drive assembly, and the drive assembly is connected to the shell along the linear direction through the matching of the mounting hole and the connecting part.

Description

Electric screwdriver

Technical Field

The utility model relates to an electronic screwdriver.

Background

The electric screwdriver is used as a tool for assembling operations, and screws are loosened or tightened mainly through forward and backward rotation of a screwdriver bit, the output power of the existing gun-type screwdriver is large, the application range is , however, the internal compact structure of the electric screwdriver is not suitable for being assembled and disassembled with a large-sized electric screwdriver for precision products, so cylinder-type screwdrivers suitable for precision instrument operation are derived.

SUMMERY OF THE UTILITY MODEL

For solving the not enough of prior art, the utility model aims to provide kinds of less and convenient assembling's of volume electronic screwdriver.

In order to achieve the above object, the utility model adopts the following technical scheme:

electric screwdriver comprises a shell, a driving assembly and a connecting part, wherein the shell extends along linear directions and is provided with accommodating cavities, the driving assembly is installed in the accommodating cavities, the driving assembly comprises a screwdriver bit adapter shaft used for connecting a screwdriver bit, a motor used for driving the screwdriver bit adapter to rotate, a power supply used for supplying power to the motor, the driving assembly is arranged along the linear direction and is provided with an installing hole used for being connected to the shell, a connecting part used for being connected with the driving assembly is formed in an accommodating space, and the driving assembly is matched with the connecting part through the installing hole and is connected to the shell along the linear direction.

it also comprises a front cover and a back cover, the shell comprises two openings, the front cover closes openings, the back cover closes other openings.

, the drive integration includes:

the circuit board is electrically connected to the motor and the power supply and used for controlling the power supply and the motor;

the gear box, end is connected to the motor, and end is connected to the bit coupling shaft for transmitting the power of the motor to the bit coupling shaft.

, the housing further forms a mounting opening for mounting a control device, the control device being electrically connected to the circuit board.

the drive assembly further comprises a fixed casing formed with a receiving space for receiving the drive assembly body and formed with a mounting hole in a linear direction for connecting the drive assembly to the housing.

the fixed case includes a th case and a second case, the th case and the second case are connected to form a containing space, and the th case forms a mounting hole along a straight line.

, the driving assembly further comprises a fixing member formed with a fixing groove for fixing the power supply;

the fixing piece also comprises fixing holes distributed along the straight line direction.

the connecting part includes a connecting hole and a second connecting hole distributed along the straight line direction, a connecting hole matching with the mounting hole, and a second connecting hole matching with the fixing hole.

, the circuit board forms or is connected with a connection terminal for connecting a power supply, the connection terminal is disposed in the fixing groove, and the other is disposed at the motor.

, the housing has projection planes perpendicular to the linear direction along the linear direction, and the th connecting holes and the second connecting holes are distributed in a staggered way along the projection planes of the linear direction.

The utility model discloses an advantage lies in through with drive part integrated setting, has reduced the complete machine size of electronic screwdriver, has further steps reduced the size of screwdriver through setting up the set casing and designing connection structure along the shell direction to make the assembly more convenient.

Drawings

FIG. 1 is a perspective view of a motorized screwdriver;

FIG. 2 is a perspective view from another perspective of the power screwdriver of FIG. 1;

FIG. 3 is an exploded schematic view of the powered screwdriver of FIG. 1;

FIG. 4 is an exploded view of the motorized screwdriver of FIG. 3;

FIG. 5 is an exploded view of the powered screwdriver of FIG. 4 from another view ;

FIG. 6 is an enlarged view of a portion of the power screwdriver of FIG. 5 at A;

FIG. 7 is an enlarged view of a portion of the power screwdriver of FIG. 5 at B;

FIG. 8 is a perspective view of the housing of the power screwdriver of FIG. 3;

fig. 9 is a partial enlarged view of the housing of the power screwdriver of fig. 8 at C.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

The electric screwdriver 100100 shown in fig. 1-3 comprises a housing 11, a front cover 13, a rear cover 14 and a driving assembly 15, wherein the driving assembly 15 is disposed in the housing 11 and sealed in the housing 11 through the front cover 13 and the rear cover 14, the housing 11 is complete cylinders, the interior of the housing is hollow, accommodating cavities 111 are formed, both ends of the housing are open, and a connecting end 151a for connecting the front cover 13 and the rear cover 14 is disposed at the opening, it is understood that the housing 11 can be formed by two split shells, without limitation, and a mounting opening 112 for mounting the control device 12 is further formed on the outer wall of the housing 11, in this embodiment, the front cover 13 is in threaded connection with the housing 11, and the rear cover 14 is in snap connection with the housing 11, it is understood that the connection of the front cover 13 or the rear cover to the housing 11 is not limited to the above connection, but the front cover 13 can be in snap connection with the housing 11, the rear cover 14 can be in threaded connection with the housing 11, or both the front cover 14 and the rear cover 14 can be fixedly connected with the housing 11.

As shown in fig. 4 to 5, the driving assembly 15 includes a circuit board 151, a power source 152, a motor 153, and a bit transfer shaft 154, wherein the circuit board 151 is further connected to a control device 12 for controlling rotation of the motor 153, the motor 153 is used for outputting power to drive the bit transfer shaft 154 to rotate, in this embodiment, the driving assembly 15 further includes a gear box 155, the gear box 155 is connected to the motor 153 and transmits power from the motor 153 to the bit transfer shaft 154, the front case is further formed with a through hole for passing the bit transfer shaft therethrough, the bit transfer shaft 154 is connected to the gear box 155, and the other is connected to different types of bits to adapt to different working conditions, the power source 152 is used for supplying power to the motor 153, more specifically, the circuit board 151 is electrically connected to the power source 152 and the motor 153, and the power source 152 is arranged in sequence in -th straight line direction parallel to the bit transfer shaft 154.

In order to fix and protect the motor 153 and the gear box 155, in the present embodiment, the driving assembly 15 further includes a fixed housing 156, in the present embodiment, the fixed housing 156 includes th and

second housings

156a and 156c, th and

second housings

156a and 156c are circular arc shaped housings, and the two housings are butted to form completed cylinders, the cylinders are hollow, and form accommodating spaces for accommodating the motor 153 and the gear box 155, in the aspect of , the accommodating cavity 111 formed by connecting the th and

second housings

156a and 156c can fix the motor 153 and the gear box 155, so as to prevent the motor 153 from generating vibration during high-speed rotation and affecting transmission between the motor 153 and the gear box 155, in the aspect of , the th and second housings 156c can also play a role of protection, so as to at least partially isolate vibration from between the motor 153 and the gear box 155, so as to prevent the vibration from being specially transmitted to the outside and affecting user experience, and finally, the motor 153 and the gear box 155 are fixed by the second housings 156a and the second housings 156c of to fix the housings and 156c, so as to prevent the

housing

153 and 155 and the driving assembly from forming additional driving housing 153 and the driving assembly, so as to reduce the volume of the driving housing 153 and the driving assembly, thereby to reduce the.

In the present embodiment, the th casing 156a and the second casing 156c are respectively connected to the gear box 155 by screws, so as to connect the th casing 156a, the second casing 156c, the motor 153 and the gear box 155 into th whole, the circuit board 151 is mounted on the th casing 156a by the fixing member 157, in addition, the circuit board 151 is further formed or connected with the connection end 151a for connecting the power supply 152, the driving assembly 15 further includes fixing members 157 for fixing the power supply 152, the fixing member 157 is formed with the fixing groove 157a, the fixing groove 157a 5393 is opened, the other end is closed, the connection end 151a 6855 of the circuit board 151 is disposed in the closed end of the fixing groove 157a, the other end is disposed at the end close to the motor 153, when the power supply 152 is fixed by the fixing member 157, relative displacement is not generated inside the housing 11, it is understood that the fixing member 157a formed may partially receive the power supply 152 or may receive the entire power supply 152, there is no restriction as shown in fig. 6, when the power supply 152 is mounted to the housing 152, the mounting direction, the mounting of the fixing members 157b, the fixing members 157b is formed along the fixing grooves 157b, the fixing members are arranged along the fixing grooves 157b, the straight line of the fixing members 157b, the fixing members 157b, the fixing members are arranged along the fixing members 157, the fixing members 157b, the fixing members are arranged along the fixing members 21, the fixing members.

In fact, as shown in fig. 8 to 9, in order to fix the driving assembly 15 in the housing 11, the inner wall of the housing 11 is further formed with the connecting portion 113, and the connecting portion 113 is distributed on the axial position of the housing 11. specifically, in order to achieve effective matching of the fixing hole 157b and the mounting hole 156b, the connecting portion 113 includes the th connecting hole 113a and the second connecting hole 113b, and the th connecting hole 113a and the second connecting hole 113b are distributed in a staggered manner in a projection plane of the housing 11 perpendicular to the th straight line 101 direction, so that the th connecting hole 113a and the second connecting hole 113b can be prevented from being overlapped or partially overlapped along the th straight line 101 direction to affect the assembly of the driving assembly 15.

When the driving assemblies 15 are connected into units according to the above connection method, the driving assemblies 15 can be integrally mounted inside the housing 11, the screws are mounted on the mounting holes 156b and the connecting holes 113a, the region where the motor 153 is located is fixed on the housing 11, the screws are mounted on the fixing holes 157b and the second connecting holes 113b, and the region where the power source 152 is located is fixed on the housing 11, it can be understood that the fixing holes 157b and the mounting holes 156b are arranged in different regions along the line 101, which can ensure that the driving assemblies 15 can be stably fixed inside the housing 11 without shaking or vibrating, and finally the housing 11 is sealed by the rear cover 14 and the front cover 13.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1, an electric screwdriver, comprising:

a housing extending in linear directions and formed with accommodating chambers;

a drive assembly mounted within the receiving cavity;

the drive assembly includes:

the bit adapter shaft is used for connecting a bit;

the motor is used for driving the bit adapter to rotate;

a power supply for providing energy to the motor;

it is characterized in that the preparation method is characterized in that,

the driving assembly is arranged along the linear direction and is provided with a mounting hole for connecting to the shell;

and a connecting part for connecting the drive assembly is formed in the accommodating space, and the drive assembly is connected to the shell along the linear direction through the matching of the mounting hole and the connecting part.

2. The powered screwdriver as defined in claim 1,

the utility model also comprises a front cover and a back cover;

the housing includes two openings, the front cover enclosing the openings, and the rear cover enclosing the other openings.

3. The powered screwdriver as defined in claim 1,

the drive assembly includes:

a circuit board electrically connected to the motor and the power supply for controlling the power supply and the motor;

a gear box end connected to the motor, and end connected to the bit coupling shaft for transmitting the power of the motor to the bit coupling shaft.

4. The electric screwdriver according to claim 3,

the housing is also formed with a mounting port for mounting a control device, which is electrically connected to the circuit board.

5. The powered screwdriver as defined in claim 1,

the drive assembly further comprises a stationary housing;

the fixing housing is formed with an accommodating space for accommodating the driving unit body, and a mounting hole for connecting the driving unit to the housing is formed along the linear direction.

6. The powered screwdriver as defined in claim 5,

the stationary housing includes:

th case and second case, the th case and the second case are connected to form the containing space;

the th shell forms the mounting hole along the linear direction.

7. The electric screwdriver according to claim 6,

the drive assembly further comprises:

a fixing member formed with a fixing groove for fixing the power supply;

8. The powered screwdriver as defined in claim 7,

the connecting part comprises th connecting holes and second connecting holes distributed along the linear direction;

the th connecting hole is matched with the mounting hole;

the second connecting hole is matched with the fixing hole.

9. The powered screwdriver as defined in claim 7,

the drive assembly includes:

the circuit board forms or is connected with a connection end for connecting the power supply, the connection end end is disposed in the fixing groove, and the other end is disposed at the motor.

10. The powered screwdriver as defined in claim 8,

the shell is provided with projection surfaces perpendicular to the linear direction along the linear direction, and the projections of the connecting holes and the second connecting holes along the linear direction are distributed in a staggered mode in the projection surfaces.