CN107877439A - A kind of mini electric screwdriver - Google Patents

Abstract

The invention relates to an electric tool, in particular to a miniature electric screwdriver. The mini electric screwdriver includes a shell, in which a battery and a drive mechanism driven by the battery are installed. The drive mechanism is connected with an output shaft for installing a bit. The shell is in the shape of a box that can be held and operated. The bottom surface of the housing protrudes downwards, and the top of the housing is provided with a curved holding portion for corresponding to the user's palm. In the present invention, a box-shaped casing that can be grasped by the palm is adopted, combined with an output shaft that protrudes downwards. When in use, the axis of the bit passes through the palm of the user, and can directly apply force in the axial direction of the output shaft, which is convenient and flexible. Operation and more precise control, suitable for screw installation and removal of small and medium electronic products.

Description

A mini electric screwdriver

technical field

The invention relates to an electric tool, in particular to a miniature electric screwdriver.

Background technique

The existing hand-held electric screwdriver looks like a pistol. When operating, the hand is placed on the handle of the gun. The axis of the bit is outside the palm.

Contents of the invention

In order to overcome the defects of the prior art, the purpose of the present invention is to provide a flexible and precisely controlled miniature electric screwdriver.

In order to achieve the above object, the technical scheme of the mini electric screwdriver of the present invention is:

The mini electric screwdriver includes a shell, in which a battery and a drive mechanism driven by the battery are installed. The drive mechanism is connected with an output shaft for installing a bit. The shell is in the shape of a box that can be held and operated. The bottom surface of the housing protrudes downwards, and the top of the housing is provided with a curved holding portion for corresponding to the user's palm.

The output shaft is tilted forward.

The included angle between the axis of the output shaft and the bottom surface of the housing is 95°.

The bottom of the casing is provided with a lighting lamp, and the lighting lamp is located at the front side of the output shaft.

There is a bit storage bin inside the shell for placing spare bits. The mouth of the bit storage bin is located on the bottom surface of the housing. A detachable cover is provided outside the bin opening. The output shaft is located on the front side of the bit storage bin. .

A forward rotation button and a reverse rotation button pressed by fingers are provided on the front side of the casing.

The outer periphery of the housing is provided with an anti-slip rubber pad.

The top of the housing is provided with gear adjustment buttons for adjusting the torque and a display screen capable of displaying the working status of the electric screwdriver.

The housing is provided with a charging port for charging the battery.

A self-locking mechanism is provided between the output shaft and the driving mechanism. During electric operation, the output shaft rotates relative to the casing. When manually operated, the self-locking mechanism locks the output shaft on the casing.

In the present invention, a box-shaped casing that can be grasped by the palm is adopted, combined with an output shaft that protrudes downward. When in use, the axis of the bit passes through the palm of the user, and can directly apply force in the axial direction of the output shaft, which is convenient and flexible. Operation and more precise control, suitable for screw installation and removal of small and medium electronic products.

Furthermore, the output shaft protrudes from the bottom surface of the housing and then tilts forward to prevent the housing from blocking the field of view, making it easy to observe the end of the bit, so as to better control the working conditions of the screwdriver.

Furthermore, the shell is provided with a bit storage compartment for placing spare bits, and the cover is located at the bottom of the shell, the bit is easy to take out and replace, fully utilizes the space in the shell, and is portable.

Description of drawings

Fig. 1 is the perspective view of the embodiment of mini electric screwdriver of the present invention;

Fig. 2 is a schematic diagram of the internal structure of the mini electric screwdriver in Fig. 1;

Fig. 3 is a bottom view of the miniature electric screwdriver in Fig. 1 .

Detailed ways

The technical solution of the present invention will be described in detail below through specific examples.

As shown in Figures 1-3, the mini electric screwdriver includes a housing 1, in which a battery 3 and a driving mechanism 4 driven by the battery are installed, and the driving mechanism 4 includes a motor and a transmission. An output shaft 2 on which a bit 20 is installed is connected to the driving mechanism 4 .

The housing 1 is in the shape of a grippable box as a whole, that is, the shape of the housing 1 is approximately the size of a palm, the output shaft 2 protrudes downward from the bottom of the housing, and the top of the housing is provided with a curved surface for corresponding to the palm. When the grip portion 10 is in use, the line where the axis of the output shaft 2 is located passes through the user's palm. The output shaft 2 is inclined forward, and the angle a between the axis of the output shaft and the bottom surface of the housing is 95°. The bottom of the casing is provided with an illuminating lamp 6, and the illuminating lamp 6 is an LED lamp, which is located on the front side of the output shaft 2 and projects the light downward to the working position of the bit during use. There is a backward-sloping bit storage bin inside the housing, and two spare bit holders 21 are placed in the bin. The opening of the bit storage bin is located on the bottom surface of the housing 1, and a detachable cover 5 is provided outside the opening. , the output shaft 2 is located at the front side of the bit storage bin. The top of the casing 1 is provided with a display screen 12 capable of displaying the working state of the electric screwdriver, a charging port 13 for charging the battery, and a gear adjustment button 11 for adjusting the output torque. A first circuit board 14 is arranged below the display screen 13 and is connected to the battery 3 through the first circuit board 14 . A forward rotation button 7 and a reverse rotation button 8 pressed by fingers are provided on the front side of the casing 1 . The forward rotation button 7 and the reverse rotation button 8 are connected to the battery 3 through the second circuit board 15 . The outer periphery of the housing 1 is provided with an anti-slip rubber pad 9, and when holding and operating, fingers can be placed on the anti-slip rubber pad.

A self-locking mechanism 16 is provided between the output shaft 2 and the driving mechanism 4. During electric operation, the output shaft 2 rotates relative to the housing 1. When manually operated, the self-locking mechanism 16 locks the output shaft 2 on the housing, so that The bit 20 rotates synchronously with the housing 1 .

The present invention has been described in detail above, but the protection scope of the present invention is not limited to the above-mentioned embodiments. All equivalent changes or modifications made according to the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. a kind of mini electric screwdriver, including housing, battery and the drive mechanism driven by battery, driving are installed in housing The output shaft for installing screwdriver bit is connected with mechanism, it is characterised in that：The housing in can holding operation box-like, output shaft Extended downwardly from from the bottom surface of housing, the top of housing is provided with the grip part for being used for corresponding the user's palm in curved surface.

2. mini electric screwdriver according to claim 1, it is characterised in that：Output shaft turns forward.

3. mini electric screwdriver according to claim 2, it is characterised in that：The axis of output shaft and the bottom surface of housing Angle is 95 °.

4. according to the mini electric screwdriver described in claim 1 or 2 or 3, it is characterised in that：The bottom of housing is provided with illumination Lamp, illuminating lamp are located at the front side of output shaft.

5. mini electric screwdriver according to claim 1, it is characterised in that：Enclosure interior, which is provided with, to be used to place standby batch The screwdriver bit of head accommodates storehouse, and the Hatch Opening that screwdriver bit accommodates storehouse is located on the bottom surface of housing, and Hatch Opening is externally provided with removable Cang Gai, exports axle position The front side in storehouse is accommodated in screwdriver bit.

6. mini electric screwdriver according to claim 1, it is characterised in that：The front side of housing is provided with to be pressed by finger Rotating forward button and reversion button.

7. mini electric screwdriver according to claim 1, it is characterised in that：The periphery of housing is provided with antiskid glue cushion.

8. mini electric screwdriver according to claim 1, it is characterised in that：The top of housing, which is provided with, to be used to adjust moment of torsion The gear adjusting button of size and the display screen that electric screw driver working condition can be shown.

9. mini electric screwdriver according to claim 1, it is characterised in that：Housing, which is provided with, is used for what is charged the battery Charge port.

10. mini electric screwdriver according to claim 1, it is characterised in that：It is provided between output shaft and drive mechanism Self-locking mechanism, during electric operating, output shaft is relative to housing into rotation, and when operated, output shaft is locked in by self-locking mechanism On housing.