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Screwdriver head and clamping piece

A technology of clamping parts and bits, which is applied in the direction of wrench, wrench, screwdriver, etc., can solve problems such as loosening, affecting the use effect, and unstable fixation, and achieves the effects of convenient processing, strong clamping effect, and high fixing strength

Pending Publication Date: 2020-10-02
温州金三原工具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing bits are installed on power tools such as electric drills or electric hammers, and the fastening effect is achieved by relying on the section of the bit itself. This kind of fixing structure is not firm and will loosen, which will affect the actual use effect.

Method used

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  • Screwdriver head and clamping piece
  • Screwdriver head and clamping piece
  • Screwdriver head and clamping piece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Refer to attached Figure 1-2 As shown, a bit includes a first head 1, a first connecting part 2, a first fixing part 3 and a second fixing part 4, and the first head 1 is connected to the first fixing part 3 through the first connecting part 2. Connection, the first fixing part 3 is connected with the second fixing part 4 .

[0039] The first head 1 can be in the shape of a straight line, a cross or a quincunx, and this embodiment only takes the cross shape as an example. Four wing teeth 11 are arranged on the first head 1, and the four wing teeth 11 are connected to form a cross shape. The side of the wing tooth 11 is arched, specifically a parabolic shape, where the parabolic equation satisfies Y=0.75X^2+0.17, and it should be noted here that the range of X is (-1,1), ensuring that the wing tooth 11, thereby controlling the overall center of gravity and stability of the bit, and the height of the arch is limited, so that the side walls of the wing teeth 11 fit bett...

Embodiment 2

[0052] Refer to attached image 3 As shown, the difference between Embodiment 2 and Embodiment 1 is that the bit in this embodiment is set with a single head, that is, only one first head 1 is set.

Embodiment 3

[0054] Refer to attached Figure 4-7 As shown, a clamping piece includes a bit and a main body 5. The structure of a bit has been described in detail in Embodiment 1, so no further description is given here.

[0055] The main body 5 is provided with a first part 6 and a second part 7 , the second part 7 is sheathed on the first part 6 and the two are in a rotational connection, specifically a screw connection here. The size of the second part 7 is larger than the size of the first part 6 . The first component 6 is provided with a through hole 61 , and the through hole 61 is integrally set through the first component 6 . The second component 7 is provided with three clamping parts 71, and the three clamping parts 71 are distributed in a circular array and have the same shape. The three clamping parts 71 penetrate into the through hole 61 and move axially along the inner wall of the through hole 61. The tops of the three clamping parts 71 form a clamping opening 711 for the ef...

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PUM

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Abstract

The invention discloses a screwdriver head and a clamping part. The screwdriver head comprises a first head part, a first connecting part and a first fixing part, the first head part is connected withthe first fixing part through the first connecting part, the section of the first fixing part is in a regular hexagon shape, and first grooves are formed in at least three side faces of the first fixing part. The screwdriver head and the clamping part are good in clamping effect, high in attractiveness and large in torsion resistance.

Description

technical field [0001] The invention relates to a bit and a clamping piece. Background technique [0002] The bit usually refers to the screwdriver head installed on the electric drill or electric hammer to screw the screw. However, the existing bits are installed on power tools such as hand drills or electric hammers, and the fastening effect is achieved by relying on the section of the bit itself. This kind of fixing structure is not firm and will loosen, which affects the actual use effect. Contents of the invention [0003] The technical problem mainly solved by the present invention is to provide a bit and a clamping piece. [0004] The technical solution adopted by the present invention to solve the technical problem is: a batch head and a clamping piece, which include a first head, a first connecting portion and a first fixing portion, and the first head passes through the first connecting portion Connected with the first fixing part, the cross section of the firs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B21/00B25B21/02B25B23/00
CPCB25B21/00B25B21/02B25B23/0035
Inventor 郑原敏
Owner 温州金三原工具有限公司
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