CN202640249U

CN202640249U - Tool bit of electric screw driver

Info

Publication number: CN202640249U
Application number: CN 201220314370
Authority: CN
Inventors: 朱文高
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-07-02
Filing date: 2012-07-02
Publication date: 2013-01-02
Anticipated expiration: 2022-07-02

Abstract

The utility model discloses a tool bit of an electric screw driver. The tool bit comprises a tool bit body (10), wherein a first working portion (11) is arranged at one end of the tool bit body (10), and a second working portion (12) is arranged at the other end of the tool bit body (10). According to the tool bit, working portions are arranged at two ends of the tool bit, so that the service life of the tool bit is prolonged, and manufacturing materials of the tool bit are greatly saved.

Description

The cutter head of electric screw driver

Technical field

The utility model relates to a kind of cutter head of electric screw driver.

Background technology

Electric screw driver is a kind of mechanism that adjusting and torque limiting are housed, be used for tightening and unscrewing the electric tool that screw is used, electric screw driver comprises cutter head, cutter head is by the locking of cutter head locking mechanism, cutter head comprises the cutter head body, one end of cutter head body is provided with operate portions, the line of rabbet joint or the recess interior part of operate portions for inserting screw cap, there is following shortcoming in this electric screw driver: after long-time the use, the operate portions of cutter head is easily wearing and tearing often, make the turn of the screw poor effect, and the careless and hard thing bump of operate portions also can make operate portions damage, at this moment just need to change cutter head, bit replacing is frequent, and use cost is higher, and waste of material is serious.

The utility model content

Technical problem to be solved in the utility model is that the cutter head that makes two ends be equipped with the electric screw driver of operate portions is provided.

For solving the problems of the technologies described above, the cutter head of the electric screw driver that the utility model provides, comprise the cutter head body, one end of cutter head body is provided with the first operate portions, the other end of described cutter head body is provided with the second operate portions, the first operate portions and the second work are the line of rabbet joint or the interior part of recess that can insert screw cap, and the first operate portions and the second operate portions all can be the various shapes such as in-line, cross, interior hexagon, outer-hexagonal shape.

After adopting above structure, the utility model compared with prior art has following advantage:

The up and down two ends of cutter head body are equipped with operate portions, when the first operate portions owing to long-term when using serious wear or the first operate portions to be collided to damage, can extract cutter head, make the second operate portions of cutter head up, the locking cutter head, make this cutter head can continue to use, doubled the average service time of a cutter head, improved the service life of cutter head, greatly saved the manufactured materials of cutter head, make the use cost of cutter head on average reduce half, have good economic benefit.

As improvement, the cross section of described cutter head body is circle or polygon, that is to say that the cutter head body can be various shapes, such as cylindrical, square column type, hexagonal cylindricality and various difform combination, the cutter head locking mechanism of its electric screw driver that can cooperate various different structures is used.

Description of drawings

Fig. 1 is the cutter head of electric screw driver of the present invention and the cutaway view of locking mechanism;

Fig. 2 is the cutter head of electric screw driver of the present invention and the side view of locking mechanism;

Fig. 3 is the cutter head of electric screw driver of the present invention and the explosive view of locking mechanism.

Wherein, 10, cutter head body; 11, the first operate portions; 12, the second operate portions; 20, Connection Block; 21, slotted hole; 22, connecting portion; 30, locking nut.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in more detail.

By Fig. 1, Fig. 2, the cutter head of the utility model electric screw driver shown in Figure 3 and the structural representation of locking mechanism are as can be known, it comprises cutter head, Connection Block 20, the cutter head locking mechanism that is used for locking cutter head and Connection Block 20, cutter head comprises cutter head body 10, one end of cutter head body 10 is provided with the first operate portions 11, the other end of described cutter head body 10 is provided with the second operate portions 12, the first operate portions and the second operate portions are the line of rabbet joint or the interior part of recess that can insert screw cap, and the first operate portions and the second operate portions all can be in-line, cross, interior hexagon, the various shapes such as outer-hexagonal shape.

The cutter head locking mechanism of described this cutter head refers to that the circle wall of Connection Block 20 is provided with at least one upper end open and extends axially and connect the slotted hole 21 of the circle wall of Connection Block 20, the diameter of cutter head body 10 is less than or equal to the internal diameter of Connection Block 20, that is to say that the diameter of cutter head body is less than or equal to the diameter of the inner chamber of Connection Block, cutter head body 10 is socketed on the inner chamber of Connection Block 20, the connecting portion 22 on Connection Block 20 tops is up-small and down-big truncated cone-shaped, that is to say Connection Block 20 tops connecting portion 22 outer wall from top to bottom diameter increase gradually, connecting portion 22 is provided with external screw thread, this locking mechanism includes locking nut 30, locking nut 30 is provided with the internal thread that cooperates with the external screw thread of connecting portion 22, the internal thread hole that is to say locking nut 30 from top to bottom diameter increases gradually, locking nut 30 is threaded with connecting portion 22, the quantity of described slotted hole 21 is two, article two, slotted hole 21 is symmetrical with respect to the center line of Connection Block 22, make the locking effect of cutter head good by this cutter head locking mechanism, and when the first operate portions 11 owing to long-term when using serious wear or the first operate portions 11 to be collided to damage, can extract cutter head, make the second operate portions 12 of cutter head up, the locking cutter head makes this cutter head can continue to use.

Below only use better example with regard to the utility model and made explanation, but can not be interpreted as it is limitations on claims, structure of the present utility model can have other variations, is not limited to said structure.In a word, all various variations of doing in the protection domain of independent claims of the present utility model are all in protection domain of the present utility model.

Claims

1. the cutter head of an electric screw driver comprises cutter head body (10), and an end of cutter head body (10) is provided with the first operate portions (11), it is characterized in that: the other end of described cutter head body (10) is provided with the second operate portions (12).

2. the cutter head of electric screw driver according to claim 1, it is characterized in that: the cross section of described cutter head body (10) is circle or polygon.