CN210500009U

CN210500009U - Electric screwdriver output shaft assembly convenient to assemble and driver thereof

Info

Publication number: CN210500009U
Application number: CN201921248178.2U
Authority: CN
Inventors: 赵强; 王乾
Original assignee: Zhejiang Chaoli Mechanical Tools Co ltd
Current assignee: Zhejiang Chaoli mechanical tools Co.,Ltd.
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-05-12
Anticipated expiration: 2029-08-02

Abstract

The utility model discloses an electric screwdriver output shaft assembly convenient to assemble and a driver thereof, which belong to the technical field of electric tools and solve the problems of convenient assembly degree and reliable operation, and the technical scheme is characterized in that the electric screwdriver output shaft assembly comprises a shaft body, a limiting disc, an adjusting ring sleeve, a rubber ring and a snap spring, wherein the shaft body comprises a transverse lug at the bottom, a cylinder at the middle position, a square cylinder at the end part and an annular part at the end part of the cylinder; the screwdriver is characterized in that an installation groove for inserting a screwdriver is formed in the axis position of the upper end of the shaft body, a secondary groove is formed in the bottom of the installation groove, a magnet is fixed in the secondary groove, a notch is formed in the side face of the magnet, the depth of the secondary groove is larger than the height of the magnet, the secondary groove and the matched magnet are formed, the screwdriver replacing efficiency is improved, the matching relation between a driver and an output shaft is changed, the assembling structure is adjusted, and the effect of reliable operation is achieved.

Description

Electric screwdriver output shaft assembly convenient to assemble and driver thereof

Technical Field

The utility model relates to an electric tool field relates to an electric screwdriver output shaft subassembly and driver convenient to assembly very much.

Background

The electric wrench is one of electric tools, namely a wrench taking a power supply or a battery as power, is a tool for screwing a high-strength bolt, and is called a high-strength bolt gun. Mainly comprises an impact wrench, a torsional shear wrench, a fixed torque wrench, a corner wrench and an angular wrench. At present, a micro motor is mostly adopted as a driving motor of the impact type electric wrench, the motor drives a central shaft to rotate, then a striking block is driven by the central shaft to strike a transverse pin on an output shaft, and torque transmission is achieved, so that inertia force generated by a flywheel of the striking block rotating at a high speed is converted into impact force, and the purpose of disassembling and assembling bolts or nuts is achieved.

The electric screwdriver is one of electric tools, an output shaft of the electric screwdriver needs to be assembled with a screwdriver, and the existing output shaft assembly structure has the following defects in the assembling process: the screw driver needing to be inserted is easy to fall off and not tightly matched, and if the screw driver is too tightly matched, the screw driver is not easy to detach; the above problems also exist for screwdrivers that require a socket connection.

The existing screwdriver structure is a standard part, the appearance structure of a regular hexagon or a regular quadrangle of the existing screwdriver structure and a groove or a hole are made according to the standard, so that the screwdriver is purchased in the market as a standard part, but the reliability and the convenience of assembly are different due to different output shaft assembly structures.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. In view of this, the utility model aims at providing an electric screwdriver output shaft subassembly and driver thereof convenient to assembly has the assembly of being convenient for, and it is convenient to have the screwdriver and change outfit, has the advantage of reliable operation.

In order to solve the technical problem, the technical scheme of the utility model is that: an electric screwdriver output shaft assembly convenient to assemble comprises a shaft body, a limiting disc, an adjusting ring sleeve, a rubber ring and a clamp spring, wherein the shaft body comprises a transverse lug at the bottom, a cylinder at the middle position, a square cylinder at the end part and an annular part at the end part of the cylinder;

the utility model discloses a screwdriver, including axis body, secondary groove, magnet, the last end axle center position of axis body sets up the mounting groove that is used for supplying the screwdriver to peg graft, the secondary groove has been seted up to the bottom of mounting groove, the secondary inslot is fixed with the magnet, the side of magnet is provided with the breach, the degree of depth in secondary groove is greater than the height of magnet.

As a specific aspect of the present invention, it may be preferable that: the bottom of the secondary groove is conical.

As a specific aspect of the present invention, it may be preferable that: two opposite side surfaces of the square column body are provided with round holes which penetrate through each other, and the round holes are communicated with the mounting groove.

As a specific aspect of the present invention, it may be preferable that: the secondary groove is positioned in the cylinder, and the magnet is flush with the bottom surface of the mounting groove or lower than the bottom surface.

As a specific aspect of the present invention, it may be preferable that: the limiting disc is supported on the transverse lug, the adjusting ring is sleeved on the cylinder and abuts against the limiting disc, and the inner edge surface of the limiting disc is conical.

On the other hand, a driver for assemble in foretell electric screwdriver output shaft subassembly, include the striking cover of inlaying mutually with the horizontal lug of axis body bottom, install the transmission shaft in the middle of the striking cover, the terminal surface of striking cover towards horizontal lug includes cover portion and protrusion in the striking piece on cover portion surface, striking piece is the triangle-shaped structure, the mating holes that supplies the transmission shaft to stretch out is left to cover portion, the transmission shaft is pegged graft with the axis body bottom and is cooperated.

As a specific aspect of the present invention, it may be preferable that: the center of the transmission shaft is embedded with another magnet.

As a specific aspect of the present invention, it may be preferable that: the diameter of the matching hole of the covering part is smaller than the distance between the two impact blocks.

The utility model discloses technical effect mainly embodies in following aspect:

1. the output shaft is provided with the secondary groove through the shaft body, so that the magnet can be installed, the gap is formed in the magnet matching process, the magnet can be rapidly punched and enter the secondary groove, air in the secondary groove can be discharged from the gap, air compression cannot be generated, the magnet can adsorb the screwdriver, the screwdriver is not easy to fall off after being assembled, and the reliability of screwdriver assembly is improved;

2. the round hole can further strengthen the mounting and fastening degree of the screwdriver, can provide fastening force from the diameter direction, and can be used for assembling fastening bolts;

3. the limiting disc and the shaft body are separated, although the assembling step is added, the assembling mode is simple and convenient, and the position of the limiting disc can be adjusted through the interference of the adjusting ring sleeve on the limiting disc;

4. the structure of cooperation output shaft has carried out the improvement of cooperativeness to the transfer case, utilizes and covers the portion, can prevent effectively that dust or foreign matter from directly getting into from the transmission shaft, and after the assembly, the mating holes is shielded by the output shaft bottom, has improved the reliability of operation, and in addition when the assembly, the grafting cooperation of output shaft and transmission shaft is more convenient.

Drawings

FIG. 1 is a schematic view of an embodiment of an output shaft assembly;

FIG. 2 is a top view of the output shaft assembly;

FIG. 3 is a cross-sectional view of the output shaft assembly construction;

FIG. 4 is a schematic view of the actuator;

fig. 5 is an assembly view of the actuator.

Reference numerals: 1. a shaft body; 101. a transverse projection; 102. a cylinder; 103. a square column body; 104. an annular portion; 105. mounting grooves; 106. a secondary groove; 107. a circular hole; 2. a limiting disc; 201. an inner edge face; 3. adjusting the ring sleeve; 4. a rubber ring; 5. a clamp spring; 6. a magnet; 601. a notch; 7. an impact sleeve; 701. an impact block; 702. a mating hole; 703. a cover portion; 8. a drive shaft.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention so that the technical solution of the present invention can be more easily understood and grasped, and should not be construed as limiting the present invention.

Example 1:

an electric screwdriver output shaft assembly convenient for assembly, hereinafter referred to as an "output shaft", is disclosed, and refer to fig. 1, 2 and 3. The adjustable shaft comprises a shaft body 1, a limiting disc 2, an adjusting ring sleeve 3, a rubber ring 4 and a clamp spring 5. The cooperation of rubber sleeve and jump ring 5, the installation process that jump ring 5 surrounds the rubber sleeve is more convenient, and jump ring 5 is the area open-ended. The clamp spring 5 has elasticity and can expand from the opening. The shaft body 1 includes a lateral projection 101 at the bottom, a cylindrical body 102 at the middle, a square cylindrical body 103 of a regular quadrangle at the end, and a ring portion 104 at the end of the cylindrical body. The transverse lug 101, the cylinder 102, the square column 103 and the annular part 104 are of an integral structure. The upper end axle center position of axis body 1 is seted up and is used for supplying the mounting groove 105 of screwdriver grafting, and the bottom of mounting groove 105 is seted up inferior groove 106, and inferior inslot 106 internal fixation has magnet 6, and the side of magnet 6 is provided with breach 601. The magnet 6 is mounted in the secondary slot 106 by stamping.

Referring to fig. 3, the depth L1 of the secondary slot 106 is greater than the height L2 of the magnet 6. The secondary slot 106 is located within the cylinder 102 such that the magnet 6 is flush with or below the bottom surface of the mounting slot 105. So that the screwdriver can be attracted to the magnet 6 when mounted in the mounting groove 105. The bottom of the secondary slot 106 is conical. This allows the sub-groove 106 to be filled with glue, which improves the reliability of the fixing. The breach 601 of magnet 6 is the arc, and magnet 6 cooperation in-process is owing to set up breach 601 to can make the quick punching press of magnet 6 get into inferior groove 106, and the air in inferior groove 106 can be followed breach 601 and discharged, can not produce air compression, and magnet 6 can adsorb the screwdriver, makes to be difficult for droing after the screwdriver assembles, improves the reliability of screwdriver assembly.

Two opposite side surfaces of the square column body 103 are provided with round holes 107 which are mutually penetrated, and the round holes 107 are communicated with the mounting groove 105. The inner wall of the round hole 107 is provided with threads, and radial fastening can be realized by matching with a fastening bolt.

Referring to fig. 3, the limiting disc 2 is supported on the transverse protrusion 101, the adjusting ring 3 is sleeved on the cylinder 102 and abuts against the limiting disc 2, and an inner edge surface 201 of the limiting disc 2 is conical. Therefore, the adjusting ring sleeve 3 can move up and down, and the limiting disc 2 can also move up and down. The tapered inner edge surface 201 may reduce wear.

Example 2:

a driver is based on the embodiment 1 and is shown in figures 4 and 5, and is used for being assembled on the output shaft assembly of the electric screwdriver, and the driver comprises an impact sleeve 7 and a transmission shaft 8, wherein the impact sleeve 7 is embedded with a transverse lug 101 at the bottom of a shaft body 1, and the transmission shaft 8 is arranged in the middle of the impact sleeve 7. The end surface of the impact sleeve 7 facing the transverse protrusion 101 includes a covering portion 703 and an impact block 701 protruding from the surface of the covering portion 703, the impact block 701 has a triangular structure, the covering portion 703 leaves a matching hole 702 for the transmission shaft 8 to extend out, and the transmission shaft 8 is matched with the bottom of the shaft body 1 in an inserting manner. Another magnet 6 is embedded in the center of the transmission shaft 8. The diameter of the mating hole 702 of the cover portion 703 is smaller than the distance between the two impact blocks 701.

The structure of cooperation output shaft has carried out the improvement of cooperativeness to the transmission case, utilizes the portion of hiding 703, can effectively prevent that dust or foreign matter from directly getting into from transmission shaft 8, and after the assembly, mating holes 702 is shielded by the output shaft bottom, has improved the reliability of operation, and in addition when the assembly, the grafting cooperation of output shaft and transmission shaft 8 is more convenient.

Of course, the above is only a typical example of the present invention, and besides, the present invention can also have other various specific embodiments, and all technical solutions adopting equivalent replacement or equivalent transformation are all within the scope of the present invention as claimed.

Claims

1. An electric screwdriver output shaft assembly convenient to assemble comprises a shaft body, a limiting disc, an adjusting ring sleeve, a rubber ring and a clamp spring, and is characterized in that the shaft body comprises a transverse lug at the bottom, a cylinder at the middle position, a square cylinder at the end part and an annular part at the end part of the cylinder;

2. The power screwdriver output shaft assembly for facilitating assembly of claim 1 wherein said secondary slot is conically shaped at its bottom.

3. The electric screwdriver output shaft assembly convenient to assemble as claimed in claim 1, wherein two opposite side surfaces of the square column body are provided with round holes penetrating through each other, and the round holes are communicated with the mounting groove.

4. The electric screwdriver output shaft assembly facilitating assembly as set forth in claim 1, wherein the secondary slot is located within the cylinder and the magnet is flush with or lower than a bottom surface of the mounting slot.

5. The electric screwdriver output shaft assembly convenient for assembly as recited in claim 1, wherein said limiting plate is supported on a transverse projection, said adjusting ring is sleeved on the cylinder and abuts against the limiting plate, and the inner edge surface of said limiting plate is tapered.

6. A driver, which is used for being assembled on the output shaft assembly of the electric screwdriver as claimed in any one of claims 1 to 5, and is characterized by comprising an impact sleeve embedded with a transverse lug at the bottom of the shaft body, and a transmission shaft arranged in the middle of the impact sleeve, wherein the end surface of the impact sleeve, facing the transverse lug, comprises a covering part and an impact block protruding out of the surface of the covering part, the impact block is in a triangular structure, the covering part leaves a matching hole for the transmission shaft to extend out, and the transmission shaft is in plug-in fit with the bottom of the shaft body.

7. An actuator according to claim 6, wherein the drive shaft is provided with a further magnet embedded in the centre thereof.

8. The driver according to claim 7, wherein the diameter of the mating hole of the cover portion is smaller than the distance between the two striker blocks.