CN210280767U

CN210280767U - Electric hand drill

Info

Publication number: CN210280767U
Application number: CN201921106783.6U
Authority: CN
Inventors: 吴威
Original assignee: Jiangsu Dongcheng M&e Tools Co ltd
Current assignee: Jiangsu Dongcheng M&e Tools Co ltd
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2020-04-10
Anticipated expiration: 2029-07-15

Abstract

An electric hand drill comprising: the switch comprises a main body, a handle extending downwards from one side of the main body, a switch assembly arranged in the handle and a switching mechanism connected with the switch assembly, wherein the switching mechanism is positioned below the bottom of the main body and comprises a shifting lever extending forwards from the switch assembly out of the handle, and the switch is characterized in that: the electric hand drill comprises a pair of stopping parts which are respectively arranged on two sides of the shifting lever, and the shifting lever of the switching mechanism is shifted between the stopping parts. The utility model discloses a set up backstop portion in driving lever both sides, when the driving lever stirred the biggest home range in the outside, this backstop portion supported the driving lever, prevented that the driving lever from further moving, improved driving lever and switch module's junction yielding, phenomenon of rupture, simple structure to improve switching mechanism's life.

Description

Electric hand drill

[ technical field ]

The utility model relates to an electric hand drill, in particular to electric hand drill with positive reverse switching function.

[ background art ]

In the prior art, an electric tool with a forward and reverse rotation switching function, such as an electric hand drill, generally includes a switch assembly and a shifting lever connected to the switch assembly, and a user shifts the shifting lever to change a rotation direction of the electric hand drill, so as to switch the forward and reverse rotation of the electric hand drill, thereby achieving a purpose of screwing or loosening a screw. The electric hand drill of prior art is when carrying out the switching of just reversing, when the intermediate position was stirred and was crossed to the driving lever, because the driving lever can continue to move towards one side under the inertial action or under the spring drive, realizes required switching purpose, but when the driving lever outwards moved to the maximum limit under the effect such as inertia, this driving lever and switch module's junction moment of flexure increase appears phenomenons such as deformation, fracture easily, influences electric tool's life.

Accordingly, there is a need for an improved hand drill that overcomes the deficiencies of the prior art.

[ contents of utility model ]

The electric hand drill is simple in structure and not easy to damage.

The utility model provides a prior art problem can adopt following technical scheme: an electric hand drill comprising: the electric hand drill comprises a main body, a handle, a switch assembly and a switching mechanism, wherein the handle extends downwards from one side of the main body, the switch assembly is installed in the handle, the switching mechanism is connected to the switch assembly, the switching mechanism is located below the bottom of the main body, the switching mechanism comprises a shifting rod, the shifting rod extends forwards from the switch assembly to the handle, the electric hand drill comprises a pair of stopping portions which are respectively arranged on two sides of the shifting rod, and the shifting rod of the switching mechanism is shifted between the pair of stopping portions.

The further improvement scheme is as follows: the stopping part protrudes downwards from the bottom of the main body, and the shifting lever abuts against the stopping part when the switching mechanism is switched between a forward gear and a reverse gear.

The further improvement scheme is as follows: the stopping part is arranged on the switch assembly and protrudes downwards to two sides of the switch assembly, and the shifting lever is abutted against the stopping part when the switching mechanism is switched between a forward gear and a reverse gear.

The further improvement scheme is as follows: the shifting lever comprises a first end connected with the switch assembly and a second end far away from the switch assembly, and the shifting lever of the switching mechanism further comprises a shifting part protruding downwards from the second end of the shifting lever, and the shifting part is positioned in front of the switch assembly.

The further improvement scheme is as follows: the switch assembly comprises a button protruding out of the handle forwards and a locking device protruding out of the handle laterally, the button is used for starting or closing the switch assembly, and the locking device is used for locking the starting state of the button.

The further improvement scheme is as follows: the button is positioned below the bottom of the main body, and the shifting lever is arranged on the upper side of the button and attached to the bottom of the main body.

The further improvement scheme is as follows: the locking device is located laterally rearward of the button, and a bottom of the locking device is substantially flush with a bottom of the button.

The further improvement scheme is as follows: the electric hand drill comprises a driving assembly used for driving the electric hand drill to work, the driving assembly is connected to the switching mechanism and comprises a forward rotation state and a reverse rotation state, and when the switching mechanism is used for shifting between the stopping portions, the driving assembly is switched between the forward rotation state and the reverse rotation state.

Compared with the prior art, the utility model discloses following beneficial effect has: the stopping parts are arranged on the two sides of the shifting lever, and when the shifting lever is shifted to the outermost side within the maximum movable range, the stopping parts support the shifting lever, so that the shifting lever is prevented from further moving, the phenomena that the connecting part of the shifting lever and the switch assembly is easy to deform and break are improved, the structure is simple, and the service life of the switching mechanism is prolonged; the stopping part is arranged at the end part close to the second end of the deflector rod, so that the torque at the joint of the deflector rod and the switch assembly is further reduced, and the service life of the switching mechanism is prolonged; the button, the locking device and the shifting rod are arranged in a position relation, so that the device accords with human engineering, is convenient to operate by one hand during working, and improves working efficiency.

[ description of the drawings ]

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings:

fig. 1 is a schematic view of the whole electric hand drill of the utility model;

figure 2 is a schematic view of the hand drill of figure 1 at another angle;

figure 3 is a schematic view of the drill of figure 1 with a portion of the housing removed;

figure 4 is an enlarged fragmentary view of circle a of the power hand drill of figure 1;

fig. 5 is a schematic view of a switch assembly and a switching mechanism of the electric hand drill of fig. 3;

fig. 6 is another schematic structural view of the stopper of the electric hand drill of the present invention.

[ detailed description of the invention ]

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

Referring to fig. 1 to 5, in a first embodiment of the electric hand drill 100 according to the present invention, the electric hand drill 100 includes a main body 1, a handle 2 extending downward from one side of the main body 1, a switch assembly 3 installed in the handle 2, a switching mechanism 4 connected to the switch assembly 3, and a driving assembly 5 installed in the main body 1. The driving assembly 5 is connected to the switching mechanism 4, the driving assembly 5 is used for driving the electric hand drill 100 to work, and two modes of a forward rotation state and a reverse rotation state of the driving assembly 5 are switched under the condition that the switching mechanism 4 is pulled.

Referring to fig. 2 and 4, the switching mechanism 4 is located below the bottom of the main body 1, the switching mechanism 4 includes a shift lever 41 extending forward from the switch assembly 3 to the handle 2, the bottom of the main body 1 is provided with a pair of stopping portions 11 protruding downward, the pair of stopping portions 11 are located at two sides of the shift lever 41 to limit the maximum moving space of the shift lever 41; namely, when the shift lever 41 of the switching mechanism 4 shifts between the stopping parts 11, the driving assembly 5 is switched between the forward rotation state and the reverse rotation state; when the switching mechanism 4 is located at the forward rotation shift position or the reverse rotation shift position, the shift lever 41 abuts against the stopper 11 to limit the movable range of the shift lever 41. Through setting up backstop 11 in driving lever 41 both sides, when driving lever 41 shifted to the biggest home range in the outermost side, this backstop 11 supports driving lever 41, prevents driving lever 41 further to move, improves driving lever 41 and the junction of switch module 3 yielding, the fracture phenomenon, simple structure to improve switching mechanism 4's life.

Referring to fig. 5 again, the shift lever 41 includes a first end 411 connected to the switch assembly 3, a second end 412 far away from the switch assembly 3, and a shift portion 42 protruding downward from the second end 412, the shift portion 42 is located in front of the switch assembly 3, and the stop portion 11 is disposed at an end portion near the second end 412. The stopping portion 11 is disposed near the end of the second end 412 of the shift lever 41, so as to further reduce the torque at the connection between the shift lever 41 and the switch assembly 3, and improve the service life of the switching mechanism 4.

Referring to fig. 1 and 3 again, the switch assembly 3 includes a button 31 protruding forward from the handle 2, the button 31 being used to turn on or off the switch assembly 3, and a locking device 32 protruding laterally from the handle 2, the locking device 32 being used to lock the on state of the button 31. Preferably, the button 31 is located below the bottom of the body 1, the lever 41 is disposed on the upper side of the button 31 and abuts against the bottom of the body 1, the locking device 32 is located laterally behind the button 31, and the bottom of the locking device 32 is substantially flush with the bottom of the button 31. The button 31, the locking device 32 and the deflector rod 41 are arranged in a position relation, so that the human engineering is met, the one-hand operation is convenient to operate during working, and the working efficiency is improved.

Referring to fig. 6, in another embodiment of the present invention, the stopping portion 11 ' is disposed on the switch component 3 ' and protrudes downwards to both sides of the switch component 3 ', and when the switching mechanism is switched between the forward gear and the reverse gear, the shift lever 41 ' abuts against the stopping portion 11 '.

The utility model discloses a set up backstop portion 11 in driving lever 41 both sides, when driving lever 41 stirs the biggest home range in the outside, this backstop portion 11 supports driving lever 41, prevents driving lever 41 further to move, improves driving lever 41 and the easy deformation of the junction of switch module 3, the fracture phenomenon, simple structure to improve the life of switching mechanism 4; the stopping part 11 is arranged at the end part close to the second end 412 of the shift lever 41, so that the torque at the connection part of the shift lever 41 and the switch assembly 3 is further reduced, and the service life of the switching mechanism 4 is prolonged; the button 31, the locking device 32 and the deflector rod 41 are arranged in a position relation, so that the human engineering is met, the one-hand operation is convenient to operate during working, and the working efficiency is improved.

The present invention is not limited to the above-described embodiments. It will be readily appreciated by those skilled in the art that many other alternatives to the electric hand drill may be devised without departing from the spirit and scope of the invention. The protection scope of the present invention is subject to the content of the claims.

Claims

1. An electric hand drill comprising: the switch comprises a main body, a handle extending downwards from one side of the main body, a switch assembly arranged in the handle and a switching mechanism connected with the switch assembly, wherein the switching mechanism is positioned below the bottom of the main body and comprises a shifting lever extending forwards from the switch assembly out of the handle, and the switch is characterized in that: the electric hand drill comprises a pair of stopping parts which are respectively arranged on two sides of the shifting lever, and the shifting lever of the switching mechanism is shifted between the stopping parts.

2. An electric hand drill according to claim 1 wherein: the stopping part protrudes downwards from the bottom of the main body, and the shifting lever abuts against the stopping part when the switching mechanism is switched between a forward gear and a reverse gear.

3. An electric hand drill according to claim 1 wherein: the stopping part is arranged on the switch assembly and protrudes downwards to two sides of the switch assembly, and the shifting lever is abutted against the stopping part when the switching mechanism is switched between a forward gear and a reverse gear.

4. An electric hand drill according to claim 2 wherein: the shifting lever comprises a first end connected with the switch assembly and a second end far away from the switch assembly, and the shifting lever of the switching mechanism further comprises a shifting part protruding downwards from the second end of the shifting lever, and the shifting part is positioned in front of the switch assembly.

5. An electric hand drill according to claim 1 wherein: the switch assembly comprises a button protruding out of the handle forwards and a locking device protruding out of the handle laterally, the button is used for starting or closing the switch assembly, and the locking device is used for locking the starting state of the button.

6. An electric hand drill according to claim 5 wherein: the button is positioned below the bottom of the main body, and the shifting lever is arranged on the upper side of the button and attached to the bottom of the main body.

7. An electric hand drill according to claim 6 wherein: the locking device is located laterally rearward of the button, and a bottom of the locking device is substantially flush with a bottom of the button.

8. An electric hand drill according to claim 1 wherein: the electric hand drill comprises a driving assembly used for driving the electric hand drill to work, the driving assembly is connected to the switching mechanism and comprises a forward rotation state and a reverse rotation state, and when the switching mechanism is used for shifting between the stopping portions, the driving assembly is switched between the forward rotation state and the reverse rotation state.