KR20170107218A

KR20170107218A - Torsion bit driver

Info

Publication number: KR20170107218A
Application number: KR1020160030872A
Authority: KR
Inventors: 김진수
Original assignee: 김진수
Priority date: 2016-03-15
Filing date: 2016-03-15
Publication date: 2017-09-25

Abstract

The present invention relates to a torsion driver bit made of a hexagonal bar; has a bit blade (2) portion in a cross shape or a linear shape to be able to transfer a rotational force by fitting into a head groove of a screw on both ends thereof; and has a structure capable of preventing damage of the bit blade by reducing an instant maximum amount of impact applied to the end of the bit blade by time differentially spreading excessive torque in a longitudinal direction when the excessive torque is transferred to a middle body (1) portion connected to the part of the bit blade (2) of two places of both ends thereof while having a narrow neck (8) part of the two places therein. According to an elasticity and strength required in a body torsion section (1), a plurality of string grooves (3) are dug in the longitudinal direction such that elasticity with respect to a torsion of the torsion section (1) is increased while strength with respect to bending is preserved in an original strength.

Description

Torsion driver bit {Torsion bit driver}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electric driver bit used by being inserted into an electric driver or the like, and more particularly, To prevent breakage of the torsion coil spring.

The configuration and appearance of the existing torsion bit will be described with reference to FIG.

Both ends are in the shape of a cross or a dagger so that they can be transmitted through the groove of the head of the screw, and in the middle of the body, the thickness is reduced so that the torque can be dispersed in a timely manner by twisting when an excessive torque is transmitted. Or the torsion section 6 on the middle side of the body is flattened to cause twisting when an excessive torque is transmitted to prevent the bit edge from being damaged.

However, since the torsion section is not sufficiently twisted only by reducing the thickness of the middle portion of the driver bit (5) or by flattening the torsion section (6), it is somewhat difficult There were many deficiencies. In order to compensate for this problem, when the thickness of the torsion section 5 is made thinner or longer, the torsion section of the drive bit is easily bent or twisted as shown in FIG.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide a torque converter that can sufficiently disperse torque in a torsion period (torsional portion) of a driver bit to reduce an instantaneous impact applied to a bit edge, And a structure in which the torsion section of the drive bit body is not twisted or warped with a strong structure.

And the bit edges 2 are formed in the shape of a cruciform or the like so that both ends of the bit edges 2 are inserted into the head groove of the screw so as to transmit the rotational force. The torque is momentarily dispersed in a momentary manner in the longitudinal direction when excessive torque is transmitted to the part of the middle body 1 which is connected to the neck 8 via the part of the neck 8 so that the instantaneous maximum amount of impulse applied to the bit edge is reduced, The torsion driver bit comprising:

Characterized in that a torsion section (1) is formed by equally dividing a plurality of trunnions (3) in the longitudinal direction in the body of the driver bit in a circular arc.

As mentioned above, since the elasticity against torsion is increased and the bending strength in the longitudinal direction is not reduced by dividing the torsion section into a plurality of torsion bars to make the sectional shape into a triangular shape or a cross shape, It is possible to prevent damage to the groove of the screw or the blade edge of the driver bit due to the excessive torque of the Impact device in the situation where the fastening is completed and the screw or bolt can no longer rotate.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view, a right side view, and a cross-sectional view of each portion of a torsion driver bit according to the present application; FIG.
FIG. 2 is a view showing a torsion direction of a torsion driver bit applied by dividing a torsion section into several places; FIG.
3 shows a conventional torsion bit photo.

The above contents will be described with reference to the accompanying drawings.

And the bit edges 2 are formed in the shape of a cruciform or the like so that both ends of the bit edges 2 are inserted into the head groove of the screw so as to transmit the rotational force. The part of the middle body 1 which is connected to the neck 8 via the neck 8 is twisted in the longitudinal direction during the excessive torque transmission to reduce the maximum impact amount instantaneously when the torque is applied to the bit edge to prevent the bit edge from being damaged A torsional section of the torsion drive bit having a more flexible and strong structure that does not bend in the longitudinal direction is required.

In order to satisfy the above conditions, the original thickness of the drive bit body is not reduced, but if the multiple row shafts (3) are pivoted evenly in the arc direction in the longitudinal direction, the strength against bending in the longitudinal direction is maintained As the elasticity is increased, the torsion is easily generated and the restoring force to the original position is also increased.

In the body torsion section of the driver bit, the pawl has three trunnions (3) in the number of trunnions (3), and the triangular truncated truncated truncated cone ), And the cross section of the body becomes a cross shape (10), and the groove of the five rows becomes the oval shape (11) of the pawl body. When the groove of the six rows is broken, (12). The hexagonal cross-section matches the hexagonal cross-section of the driver bit, and the shape of the hexagonal cross-section after fitting the line groove is the best, but the processing time becomes long depending on the number of the line grooves to be broken. In this case, there is a weak side with a small number of forklifts (4), and if the thickness of the forklifts (4) extended in three directions for making up for this is thickened,

There are many disadvantages in the number of grooves that ought to be split between the Ogala and the Six-

It is possible to exhibit optimum efficiency by having a body section of a cross-shaped cross-shaped body 10 having four grooves.

Depending on the elasticity and bending strength required in the torsion section of the trunk, and depending on the strength of the material, the number of trunnions 3 is variable and the depth of the groove is also fluid.

When a strong torsion of a strong torque is required and a resilient torsion section is required, a somewhat large number of trunnions (3) may be used as the torsional section of the oval or hexagonal torsion, and a weak torsion of a weak torque In the section, the pawl is preferably of a triangular shape with the smallest number of trunks (3), but a torsion section of a cross-shaped cross section in general is appropriate.

(4) is thinner than the depth of the groove (4) regardless of the number of the groove, the elasticity is increased but the strong torque can not be transmitted. The depth of the groove is shallow and narrow. It may be able to deliver a stronger torque, but it is less elastic. Therefore, the number and depth of the hooks should be tailored to the application.

Cutting can be done either by cutting or by pressing. The problem of cutting several lines of wire is due to the degree of dry bit depending on the application of the torsion driver bit and the depth of the groove.

When laying out the stem, it is necessary to divide it by an even angle around the arc. In the case of a three-row groove, each of the forks should be pivoted at an angle of 120 degrees, and each of the forks (4) should be pivoted at an angle of 90 degrees for four rows, 72 degrees for five rows, and 60 degrees for six rows.

Such a cross-sectional structure may be divided into segments on the body as shown in FIG. 2, or may be extended over the entire segment as shown in FIG.

The torsion section should be made in the trunk section, and the torsion section in which the trunk section (3) extends from the trunk section becomes the torsion section. In FIG. 1, the trunk section and the torsion section are the same because the trunk section 3 is formed over the entire trunk section. In FIG. 2, since the torsion section is divided into three sections in the body section, the body section and the torsion section are distinguished.

As described above, the torsion section is formed in the trunk section in which the trunnion 3 and the cross-sectional shape are formed in a forked shape in the longitudinal direction, so that the screw or bolt to be fastened is completed and the screw or bolt can no longer rotate In case of the situation, the excessive torque of the impact device is distorted by the torsion section which has excellent elasticity, and the instantaneous torque is dispersed at the moment of time, thereby reducing the maximum impact amount momentarily applied to the screw head groove, This makes it possible to prevent the tip of the driver bit from being damaged and at the same time to have a strong resistance to longitudinal bending of the driver bit.

Since the shape of the torsion section of the conventional product as shown in FIG. 3 is a structure that is not suitable for distributing the torque in a timely manner due to the small amount of twist and is unfavorable, the breakage ratio of the bit- Almost the same.

The torsion section produced by cutting the barb 3 in the longitudinal direction according to the present application is good in elasticity against twisting, but the final ultimate strength against twisting is high, so that it can not be twisted and twisted or bent in the longitudinal direction This can prevent damage to the edge of the driver bit.

1: body torsion part
2: beat day
3: Shackle
Four:
5: Torsion portion
6: Torsion portion
8: neck part
9: Three-line groove cross-section
10: Four cross section
11: Five barrel section
12: Six cross-section

Claims

And the bit edges 2 are formed in the shape of a cruciform or the like so that both ends of the bit edges 2 are inserted into the head groove of the screw so as to transmit the rotational force. The torque is momentarily dispersed in a momentary manner in the longitudinal direction when excess torque is transmitted to the part of the middle body 1 which is connected to the neck 8 via the part of the neck 8 so that the instantaneous maximum impulse amount applied to the bit edge is reduced, The torsion driver bit comprising:
Characterized in that a torsion section (1) is formed by equally dividing a plurality of trunnions (3) in the longitudinal direction in the body of the driver bit in a circular arc.