Screwdriver device for an inherent tool bit set

A screwdriver for an inherent tool bit set includes a screwdriver device, a cover member and at least one control set. The screwdriver device has an accommodating portion at one end. A plurality of accommodating rooms is formed on the accommodating portion for receiving a tool bit set. At least one spring room is deposited on the accommodating portion. The screwdriver device has a working shaft at another end. The cover member has a receiving space. At least one through hole is opened on the cover member. The through hole corresponds to the spring room. The control set is assembled between the spring room and the through hole. Thus, a user presses the control set into the spring rooms for separating the cover member from the screwdriver device and takes a tool bit to assemble to the working shaft for screwing or loosing bolts.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a screwdriver, more particularly to a screwdriver device for an inherent tool bit set which a tool bit set is accommodated in a screwdriver device.

2. Description of Related Art

Screwdrivers are ordinary and widely using in houses and factories. People often assemble and fix things by using screwdrivers. Day after day, many manufacturers work hard not only to improve the quality of screwdrivers but to produce more functional screwdrivers. Thus, people can choose and use various screwdrivers to attach or to detach things easily today.

A conventional screwdriver includes an operating handle, a shaft fixed to the operating handle, and a tool bit extended from the shaft. A tool bit has particular structure and size corresponding to a particular bolt or a particular nut. If people want to screw bolts with different size and structure, or nuts with different size and structure, various screwdrivers are necessary in the task. In order to make users more convenient, some screwdrivers have a series of shafts with different tool bits that are assembled to the operating handle freely. However, users need a tool box to receive the various screwdrivers or a series of shafts. The tool box not only costs the users money but occupies the space in their houses.

The present invention has arisen to mitigate and/or obviate the disadvantages of the conventional.

SUMMARY OF THE INVENTION

The main objective of the present invention is to provide an improved screwdriver to accommodate a tool bit set for saving space and cost.

To achieve the objective, a screwdriver for an inherent tool bit set comprises a screwdriver device having an accommodating portion at one end thereof, a plurality of accommodating rooms formed on the accommodating portion for receiving a tool bit set, at least one spring room deposited on the accommodating portion, a working shaft at another end of the screwdriver device, a cover member having a receiving space at one end thereof for receiving the accommodating portion of the screwdriver device, at least one through hole opened on the cover member, the through hole communicated with the receiving space and corresponding to the spring room, at least one control set assembled between the spring room and the through hole, wherein a user presses the control set into the spring room for separating the cover member from the screwdriver device and takes a tool bit to assemble to the working shaft for screwing or loosing bolts, the control set further comprising a spring and a driving block, the spring being set between the spring room and the driving block, thereby the cover member is separated from the screwdriver device when the driving block is pressed through the through hole completely and the spring is compressed into the spring room simultaneously, at least one button room being set on the cover member, the button room communicated with the through hole, an elastic member placed into the button room, a pushing block formed at one end of the elastic member and corresponding to the through hole, the pushing block against and above the driving block, at least one locking hole opened on the button room, a button shield assembled to the button room and above the elastic member, at least one finger deposited at the button shield, wherein the finger is locking into the locking hole, a button formed on the elastic member and above the pushing block, a button hole opened on the button shield, wherein the button is received through the button hole, at least one lock portion formed on the walls of the accommodating rooms for receiving the tool bit firmly, a floor extended from a bottom of the accommodating rooms, the tool bit set received at an exact depth in the accommodating rooms through the floor, a spring fastener deposited at a terminal of the accommodating portion, a rear spring placed on the spring fastener and resisting against a bottom of the receiving space, two hook portions deposited at two lateral sides of the accommodating portion, two tracks deposited at two sides and along the walls of the receiving space, the two tracks corresponding to the two hook portions respectively.

DETAILED DESCRIPTION OF THE INVENTION

Referring to the drawings toFIGS. 1-4, a screwdriver for an inherent tool bit set in accordance with the present invention comprises a screwdriver device1. The screwdriver device1has an accommodating portion11at one end thereof. A plurality of accommodating rooms12are formed on the accommodating portion11for receiving a tool bit set41. At least one lock portion121is formed on the walls of the accommodating rooms12for receiving a tool bit within the tool bit set41firmly. A floor122is extended from a bottom of the accommodating rooms12as showing inFIG. 3, wherein the tool bit set41are received at an exact depth in the accommodating rooms12through the floor122. Two hook portions13are deposited at two lateral sides of the accommodating portion11. At least one spring room14is deposited on the accommodating portion11. A spring fastener15is deposited at a terminal of the accommodating portion11, wherein a rear spring16is placed on the spring fastener15. The screwdriver device1has a working shaft17at another end thereof. Each of tool bit within the tool bit set41is assembled to one end of the working shaft17alternatively.

A cover member2has a receiving space21at one end thereof for receiving the accommodating portion11of the screwdriver device1. Two tracks22are deposited at two sides and along the walls of the receiving space21, wherein the two tracks22are corresponding to the two hook portions13respectively. The rear spring16placed on the spring fastener15is resisting against a bottom in the receiving space21. At least one through hole23is opened on the cover member2, wherein the through hole23is communicated with the receiving space21and corresponding to the spring room14. At least one button room24is set on the cover member2(Here are two button rooms24in the present invention.). The button room24is communicated with the through hole23. At least one locking hole241is opened on the button room24. An elastic member25is placed into the button room24. A pushing block251is formed at one end of the elastic member25and corresponding to the through hole23. A button252is formed on the elastic member25and above the pushing block251. A button shield26is assembled to the button room24and above the elastic member25. At least one finger261is deposited at the button shield26, wherein the finger261is locking into the locking hole241. A button hole262is opened on the button shield26, wherein the button252is received through the button hole262.

At least one control set3is assembled between the spring room14and the through hole23(Here are two control sets3in the present invention.). The control set3further comprises a spring31and a driving block32. The driving block32is placed into the through hole23, wherein the pushing block251of the elastic member25is against and above the driving block32. The spring31is set between the spring room14and the driving block32.

Referring to the drawings toFIGS. 4-6, the cover member2encloses the accommodating portion11of screwdriver device1and the hook portions13on the accommodating portion11are engaging with the track22so that the cover member2cannot rotate along the screwdriver device1relatively. Therefore, a user can grip the screwdriver device1and the cover member2to screw or to loose bolts. In addition, the driving block32is pushed by the spring31so that the driving block32occupies the through hole23completely. Consequently, the cover member2cannot move axially along the screwdriver device1and cannot escape easily from the screwdriver device1.

When the user want to take one tool bit within the tool bit set41from the accommodating portion11, the user presses two buttons252so that the pushing blocks251below the buttons252push the driving blocks32into the spring rooms14and compress the springs31simultaneously. After the end of the driving block32moves through the through hole23completely, the user can pull cover member2back and the rear spring16placed on the spring fastener15also pushes the cover member2back. Finally, the cover member2quickly slides out from the accommodating portion11. Therefore, the user can quickly take off the cover member2from the accommodating portion11and take one tool bit within the tool bit set41to assemble to the working shaft17.

After the user alternates one tool bit from another, a prior tool bit is placed into the accommodating room12on the accommodating portion11. The user further moves the cover member2forward along the hook portions13through the tracks22until the button252is received through the button hole262, wherein the driving block32pushed by the spring31pushes the pushing block251and the button252toward the button hole262. Consequently, the user puts the screwdriver device1and cover member2together again for doing another task.