WO2017190523A1

WO2017190523A1 - Pen-shaped rechargeable electric screwdriver

Info

Publication number: WO2017190523A1
Application number: PCT/CN2017/000319
Authority: WO
Inventors: 吴亚定
Original assignee: 吴亚定
Priority date: 2016-05-04
Filing date: 2017-04-25
Publication date: 2017-11-09
Also published as: CN205799343U

Abstract

Disclosed is a pen-shaped rechargeable electric screwdriver, comprising a handle (1). The handle (1) is internally provided with a motor (3), a main shaft (5) and a bearing (12). The motor (3) is mounted on the right side of the main shaft (5). The main shaft (5) is connected to a torque sleeve (6) by means of a threaded connection. The bearing (12) is mounted to a portion of the main shaft (5) on the left side of the torque sleeve (6). A left clutch sheet (8) is fixed to the right end of the main shaft (5). A spring (7) is mounted between the left clutch sheet (8) and the torque sleeve (6). A snap spring (10) is mounted to the main shaft (5) at the right end of the left clutch sheet (8). A torque adjustment slot is arranged at an outer surface of the torque sleeve (6). A left end face of the left clutch sheet (8) is in contact with the spring. Two pits on the surface of the left end face are provided with two steel balls (9). An output shaft of the motor (3) is equipped with a right clutch sheet (13) and a plane bearing (14). The right clutch sheet (13) is located on the left side of the plane bearing (14). The bearing (12), the torque sleeve (6), the spring (7), the left clutch sheet (8), and the right clutch sheet (13) are installed in a cavity of a box body (11). The box body (11) is mounted in the handle (1).

Description

Charging type pen electric screwdriver

Technical field

The utility model relates to a screwdriver, in particular to a rechargeable pen-shaped electric screwdriver.

Background technique

Nowadays, different types of cordless electric screwdrivers on the market do not have a clutch structure, and the torque cannot be adjusted. In use, the screws are often broken and slipped, and then the volume is large and the effective use time is short. The above is used and carried by the user. A lot of inconvenience.

Utility model content

The utility model discloses a rechargeable pen-shaped electric screwdriver for solving the deficiencies of the prior art.

In order to solve the above problems, the technical solution of the present invention is:

A rechargeable pen-shaped electric screwdriver includes a handle, a motor, a spindle and a bearing are arranged in the handle, and the motor is mounted on the right side of the spindle, and the spindle is screwed with a torque sleeve, and the spindle portion of the left side of the torque sleeve is installed There is a bearing, the left end of the main shaft is fixed with a left clutch piece, a spring is installed between the left clutch piece and the torque sleeve, and a circlip is mounted on the main shaft of the right end of the left clutch piece, and the outer surface of the torque sleeve has a torque adjustment card slot, left The left end surface of the clutch piece is in contact with the spring, and two pits are formed on the surface of the left end surface. Two steel balls are arranged in the two pits, and the right clutch piece and the plane bearing are mounted on the output shaft of the motor, and the right clutch piece is located in the plane bearing. On the left side, the bearing, the torque sleeve, the spring, the left clutch piece and the right clutch piece are all mounted in a cavity of the casing, and the casing is installed in the handle.

A handle cap is mounted on the left side of the handle, and a rechargeable lithium battery is also mounted in the handle.

The utility model has the beneficial effects that the electric screwdriver has the function of adjusting the torsion under the action of the clutch mechanism, and adopts the super power source to realize fast charging, smooth discharge, and great convenience for charging, and the user improves the use efficiency.

DRAWINGS

Figure 1 is a schematic view of the structure of the present invention;

Figure 2 is a schematic view of the structure of the present invention;

In the picture: 1-handle, 2-lithium battery, 3-motor, 5-spindle, 6-torque sleeve, 7-spring, 8-left clutch, 9-steel, 10-ring spring, 11-box, 12 - Bearing, 13-right clutch, 14-plane bearing, 15-handle cap.

detailed description

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

Referring to Figures 1-2, the utility model comprises a handle 1. The handle 1 is provided with a motor 3, a main shaft 5 and a bearing 12. The motor 3 is mounted on the right side of the main shaft 5, and the main shaft 5 is connected by a thread. Torque sleeve 6, the main shaft 5 on the left side of the torque sleeve 6 is mounted with a bearing 12, the left end of the main shaft 5 is fixed with a left clutch piece 8, and the left clutch piece 8 and the torsion sleeve 6 are mounted with a spring 7 and the right end of the left clutch piece 8 A circlip 10 is mounted on the main shaft 5 of the portion, and the outer surface of the torque sleeve 6 has a torque adjusting card slot, and the left end surface of the left clutch piece 8 is in contact with the spring, and two pits on the surface of the left end surface are disposed in the two pits. There are two steel balls 9, the output shaft of the motor 3 is mounted with a right clutch piece 13 and a plane bearing 14, the right clutch piece 13 is located on the left side of the plane bearing 14, the bearing 12, the torque sleeve 6, the spring 7, the left clutch piece 8, The right clutch pieces 13 are all mounted in a cavity of a casing 11, and the casing 11 is mounted in the handle 1.

A handle cap 15 is mounted on the left side of the handle 1, and a rechargeable lithium battery is also mounted in the handle 1.

In practical application, the spring 7 is a compression spring when the clutch is tripped, and the torque of the spring 7 is adjusted by the torque sleeve 6 to adjust the torque. The torque adjustment sleeve 6, the spring 7, and the left clutch piece 8 are sequentially loaded into the upper end of the spindle 5 in sequence. The circlip 10 is used to limit the position; the left end of the main shaft 5 is loaded into the bearing 12, and then the housing 11 is mounted. The motor 3 is a miniature DC permanent magnet motor equipped with a straight tooth reduction box, and the plane bearing 14 is loaded into the motor 3. The output shaft, the connected motor 3 is loaded into the handle 1 and screwed into the handle cap 15.

In addition, a lithium battery, a control board and a positive and negative pressure bar are provided in the electric screwdriver for supplying electric power and control operation to the motor 3. The control board has a charging socket.

When the electric screwdriver is working, the positive and negative pressure bar is pressed, the motor 3 is electrically rotated, and the right clutch piece 13 on the output shaft is driven, and the arc convex position on the right clutch piece 13 receives the blocking of the steel ball 9 to drive the left clutch piece 8, Since the left clutch piece 8 and the main shaft 5 are triangular shaft holes, the screwdriver head loaded into the left end of the spindle 5 is driven. When the screw is tightened, the screwdriver head, the main shaft 5, and the left clutch piece 8 are stopped by the resistance, and the motor 3 drives the right clutch piece 13 to continue to rotate, so that the right clutch piece 13 is convexly bent to press the steel ball 9 so that the left clutch piece 8 overcomes. The pressure of the spring 7 is moved backward to achieve the purpose of the clutch to prevent the motor 3 from being jammed.

The left end of the main shaft 5 is generally hexagonal, and has a strong magnetic block inside. The screwdriver head can be inserted in, and the replacement is convenient and quick.

The control power supply includes a charging protection circuit, a discharge protection circuit, a positive and negative control circuit, a lithium battery power supply line, and a charging socket. There are two ways to charge: one is to insert the charging wire directly into the upper charging socket of the screwdriver, and can be used for charging; The other is to insert a screwdriver into the charging base and charge it by touching the left handle cap 15 of the screwdriver.

The above specific embodiments are preferred embodiments of the present invention, and the present invention is not limited thereto. Any other changes or other equivalent replacement methods that do not depart from the technical solutions of the present invention are included in the present application. New range of protection.

Claims

A rechargeable pen-shaped electric screwdriver includes a handle, a motor, a spindle and a bearing are arranged in the handle, and the motor is mounted on the right side of the spindle, wherein the spindle is screwed to a torque sleeve, and the torque sleeve is arranged on the left side. A bearing is mounted on the main shaft portion, a left clutch piece is fixed to the right end of the main shaft, a spring is installed between the left clutch piece and the torque sleeve, and a circlip is mounted on the main shaft of the right end portion of the left clutch piece, and the outer surface of the torque sleeve has a torque adjustment The card slot, the left end surface of the left clutch piece is in contact with the spring, and two pits on the surface of the left end surface, two steel balls are arranged in the two pits, and the right clutch piece and the plane bearing are mounted on the output shaft of the motor, and the right clutch is The piece is located on the left side of the plane bearing, and the bearing, the torque sleeve, the spring, the left clutch piece and the right clutch piece are all mounted in the cavity of a box body, and the box body is installed in the handle.
The rechargeable pen-shaped electric screwdriver according to claim 1, wherein a handle cap is mounted on the left side of the handle, and a rechargeable lithium battery is also mounted in the handle.