CN204725442U - A kind of electric screwdriver head for mounting and dismounting table hat - Google Patents

Abstract

The utility model discloses an electric screwdriver for installing and dismounting a watch crown. The electric screwdriver comprises a handle with an annular groove and a cylindrical working end for absorbing the watch crown. The handle is detachably socketed, and an adjustment hole is provided at the joint between the working end and the handle, and the inner wall of the adjustment hole is threaded; the other end of the working end includes an outer edge with a chamfer and a uniform shape. The tooth-shaped inner wall is provided with an inwardly recessed platform in the middle of the inner wall. The electric screwdriver for installing and dismounting the crown provided by the utility model, when in use, the inwardly recessed platform contacts the end of the crown, and the evenly toothed inner wall matches the teeth of the crown, which helps to ensure Use even force when installing and removing the crown to avoid damaging the crown teeth. The crown can be installed on the clock or watch by manually rotating the handle, or the crown can be disassembled from the clock; the electric screwdriver can also be installed on the electric screwdriver to improve work efficiency.

Description

An electric screwdriver for installing and removing crowns

technical field

The utility model relates to an electric screwdriver used for installing and dismounting a watch crown.

Background technique

The crown, commonly known as the "watch handle" or "watch handle", is most commonly seen on the outside of the three o'clock position on the watch. The crown is divided into ordinary crown and screw-in crown. Pull out the ordinary crown directly to adjust the time. For watches with a calendar, the first gear is for adjusting the calendar, and the second gear is for adjusting the time. Screw-in type is also called spiral crown: the crown is screw-locked, and after turning the crown counterclockwise, the crown is unlocked and can be used normally. The screw-type crown can effectively improve the waterproof function of the watch, and attention should be paid to locking the crown after operation.

There are uniform crown teeth on the side of the crown, and the structure is fine. Using ordinary disassembly tools, if the force is uneven during the installation and disassembly process, the crown teeth will be damaged, which will affect the appearance of the crown. The electric screwdriver is an ideal efficient and quick assembly tool, widely used in aviation, automobile, machinery, electrical appliances and other industries, using the electric screwdriver to install and disassemble the crown helps to improve labor productivity and reduce labor intensity of workers. Electric batches are widely used in the electronics and machinery industries. The electric screwdriver basically consists of three parts: 1) the power source, which provides power energy for the electric screwdriver; 2) the mechanism for converting energy; Remove the electric screwdriver for the crown.

Utility model content

In order to prevent the crown from being damaged during installation and disassembly, the utility model provides an electric screwdriver for installing and dismounting the crown.

In order to solve the above technical problems, the technical solution of the present invention is: an electric screwdriver for installing and removing the crown, the electric screwdriver includes a handle with an annular groove and a cylindrical handle for absorbing the crown. The working end, one end of the working end is detachably socketed with the handle, an adjustment hole is provided at the mutual socket of the working end and the handle, and the inner wall of the adjustment hole is threaded; the other end of the working end includes It has a chamfered outer edge and a uniform tooth-shaped inner wall, and an inwardly recessed platform is provided in the middle of the inner wall.

Preferably, the adjustment hole is circular.

Preferably, there are two annular grooves in total, and the two annular grooves are arranged parallel to each other.

Preferably, the end of the handle is provided with chamfers.

Preferably, the handle is provided with a boss.

Compared with the prior art, the utility model provides an electric screwdriver for installing and dismounting the crown. The electric screwdriver includes a handle with an annular groove and a cylindrical working end for absorbing the crown. The handle of the groove is convenient for installing the electric screwdriver head on the electric screwdriver; one end of the working end is detachably socketed with the handle, and an adjustment hole is provided at the joint between the working end and the handle, and the adjustment The inner wall of the hole is threaded, and a tool such as a screwdriver that matches the thread of the adjustment hole can be used to extend into the adjustment hole to disassemble the handle from the working end, and the working end of different sizes can be selected according to the actual situation. Crowns of different sizes improve the utilization rate of the handle and save raw materials; the other end of the working end includes an outer edge with a chamfer and an inner wall in a uniform tooth shape, and the outer edge with a chamfer helps to Improve the smoothness of the edge of the working end, avoid the edge of the working end of the electric screwdriver head from hitting the crown, and avoid damaging the crown; there is an inwardly recessed platform in the middle of the inner wall, and the uniform flower-toothed inner wall is set on the side of the crown. On the crown teeth, the inwardly recessed platform is in contact with the end of the crown, and the uniform flower-shaped inner wall matches the crown teeth, which helps to ensure uniform force during the installation and removal of the crown and avoid damage to the crown teeth. The crown can be installed on the clock or watch by manually rotating the handle, or the crown can be disassembled from the clock; the electric bit can also be installed on the electric screwdriver to improve work efficiency.

Description of drawings

Fig. 1 is an electric screwdriver for installing and dismounting a crown according to a specific embodiment of the present invention.

Detailed ways

In order to make the above purpose, features and advantages of the present utility model more obvious and understandable, the specific implementation of the present utility model will be described in detail below in conjunction with the accompanying drawings. It should be noted that all the drawings of the present utility model are in simplified form and use inaccurate proportions, which are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present utility model.

Please refer to Fig. 1, an electric screwdriver for installing and removing the crown, the electric screwdriver comprises a handle 1 with an annular groove 1-1 and a cylindrical working end 2 for absorbing the crown, so One end of the working end 2 is detachably socketed with the handle 1, and an adjusting hole 3 is provided at the joint between the working end 2 and the handle 1, and the inner wall of the adjusting hole 3 is threaded; the working end 2 The other end includes an outer edge 2-1 with a chamfer and an inner wall 2-2 in a uniform tooth shape, and an inwardly recessed platform 2-3 is provided in the middle of the inner wall 2-2.

The adjustment hole 3 is circular, use a tool such as a screwdriver that matches the thread of the adjustment hole 3 to extend into the adjustment hole 3, the handle 1 can be disassembled from the working end 2, and different sizes can be selected according to the actual situation. The working end 2 is adapted to crowns of different sizes, improving the utilization rate of the handle 1 and saving raw materials.

There are two annular grooves 1-1 in total, and the two annular grooves 1-1 are arranged parallel to each other, which is convenient for installing the electric screwdriver on the electric screwdriver.

The end of the handle 1 is provided with chamfers to improve the smoothness of the edge of the handle 1 and avoid injury to hands.

The handle 1 is provided with a boss 1-2, which is convenient for installing the electric screwdriver on the electric screwdriver.

During use, the uniform flower-tooth-shaped inner wall 2-2 is set on the crown teeth on the side of the crown, the inwardly recessed platform 2-3 contacts the end of the crown, and the uniform flower-tooth-shaped inner wall 2-2 is in contact with the crown. Matching teeth help to ensure even force during installation and removal of the crown and avoid damage to the crown teeth. The crown can be installed on the clock or watch by manually rotating the handle 1, or the crown can be disassembled from the clock; the electric screwdriver can also be installed on the electric screwdriver to improve work efficiency.

In summary, the utility model provides an electric screwdriver for installing and removing the crown, which includes a handle 1 with an annular groove 1-1 and a cylindrical working end for absorbing the crown 2. The handle 1 of the annular groove 1-1 is convenient for installing the electric screwdriver on the electric screwdriver; one end of the working end 2 is detachably socketed with the handle 1, and the working end 2 and the handle 1 are connected to each other The socket is provided with an adjustment hole 3, and the inner wall 2-2 of the adjustment hole 3 is threaded, and tools such as a screwdriver matching the thread of the adjustment hole 3 can be used to extend into the adjustment hole 3, and the handle 1 and the The working end 2 is disassembled, and working ends 2 of different sizes can be selected according to the actual situation to adapt to crowns of different sizes, improve the utilization rate of the handle 1, and save raw materials; the other end of the working end 2 includes a The chamfered outer edge 2-1 and the uniform tooth-shaped inner wall 2-2, the chamfered outer edge 2-1 helps to improve the smoothness of the edge of the working end 2, and avoids the working end 2 of the electric screwdriver. The edge hits the crown to avoid damage to the crown; the inner wall 2-2 is provided with an inwardly recessed platform 2-3, and the even flower-toothed inner wall 2-2 is set on the crown teeth on the side of the crown. The inner concave platform 2-3 is in contact with the end of the crown, and the uniform flower-toothed inner wall 2-2 matches the crown teeth, which helps to ensure uniform force during the installation and removal of the crown and avoids damage to the crown teeth. The crown can be installed on the clock or watch by manually rotating the handle 1, or the crown can be disassembled from the clock; the electric screwdriver can also be installed on the electric screwdriver to improve work efficiency.

Those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. In this way, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalent technologies, the utility model is also intended to include these modifications and variations.

Claims (5)

1. An electric bit for installing and dismounting the crown, characterized in that the electric bit comprises a handle with an annular groove and a cylindrical working end for absorbing the crown, one end of the working end It is detachably socketed with the handle, and an adjustment hole is provided at the joint between the working end and the handle, and the inner wall of the adjustment hole is threaded; the other end of the working end includes an outer edge with a chamfer and The inner wall is uniformly tooth-shaped, and an inwardly recessed platform is arranged in the middle of the inner wall. 2. The electric screwdriver for installing and dismounting the crown according to claim 1, characterized in that, the adjustment hole is circular. 3. The electric screwdriver for installing and removing the crown according to claim 1, characterized in that there are two annular grooves in total, and the two annular grooves are arranged parallel to each other. 4. The electric screwdriver for installing and removing the crown according to claim 1, characterized in that, the end of the handle is provided with a chamfer. 5. The electric screwdriver for installing and dismounting the crown according to claim 1, characterized in that a boss is provided on the handle.