TWI784842B - screwdriver head structure - Google Patents

Abstract

The present invention relates to a screwdriver head structure, which includes: a system is provided with a working end, the working end is provided with a plurality of first working parts and a plurality of second working parts, the first working part and the second working part The axis of the working end is arranged in a staggered ring shape, the first working part is in the shape of a bump, and the second working part is in the shape of a groove; the first working part is provided with a plurality of first grooves , the first grooves are arranged in a straight line, the two ends of the first working part are provided with a first end and a second end, the outer diameter of the second end is larger than the first end, the first working part The outer peripheral surface of the part is provided with a virtual first side surface, and the first side surface is extended from the second end to the first end; each first groove is provided with a first concave surface, and the first concave surface is At least one first single arc is included.

Description

screwdriver head structure

The present invention is related to a screwdriver head structure, especially a screwdriver head structure, the first concave surface has at least a first single arc, so that when the working end rotates the screw, the plurality of first single arcs have distributed stress The effect is to prevent the working end from being broken by the first groove during operation.

According to our previous knowledge, the commonly used screwdriver head structure, such as U.S. patent case number: US7322265B2, Taiwan patent case application number: 094219199, certificate number: M289681, patent name: compound screwdriver head structure, its structure is: a compound type Screwdriver bit structure, it comprises main body 10, first working part 21, second working part 23, taper part 24 and a plurality of working grooves 25, and one end of this first working part 21 is fixed on this main body 10, and the other end is A second working part 23 is provided, and the tapered part 24 is arranged on the opposite end of the second working part 23 provided with the first working part 21, and the working groove 25 is extended from the tapered part 24 through the second working part 23 to The first working part 21 is improved in that: the first working part 21 has a plurality of first abutting surfaces 211, and the second working part 23 corresponds to each first abutting surface 211 of the first working part 21 having the same structure as each of the first abutting surfaces 211. The first abutting surface 211 is parallel to the second abutting surface 231, and the corresponding first abutting surface 211 and the second abutting surface 231 are connected by a joint surface 22, the joint surface 22 inner ring 222 and outer ring 221 respectively connects the second abutting surface 231 and the first abutting surface 211 , and the size of the outer ring 221 is larger than that of the inner ring 222 .

However, the lack of this conventional patent structure lies in:

1. Please refer to the second and third figures of the Taiwan Gazette, the second abutment surface 231 and the joint surface 22 form an open angle, that is, the inner ring 222 forms a Corner shape, when the plurality of second abutment surfaces 231 rotate the bolt 30, it is difficult to disperse the stress at the plurality of inner rings 222, and stress concentration will occur at the inner rings 222, making the body 20 easy to operate The center is broken at the inner ring 222.

2. When the first working part 21 or the second working part 23 rotates the bolt 30, between the plurality of first abutting surfaces 211 and the bolt 30 and between the plurality of second abutting surfaces 231 and the bolt 30 There is no anti-slip function between them.

In view of the lack of the above-mentioned conventional structure, the inventor has been engaged in the manufacturing, production and design experience of related industries for many years, and finally a product with a screwdriver head structure that can solve the conventional disadvantages comes out.

In the structure of the conventional compound screwdriver head, it is difficult to disperse the stress at the plurality of inner rings, and the inner rings will generate stress concentration, so that the body is easy to be broken by the inner rings 222 during operation. In the screwdriver head structure of the present invention, the first concave surface has at least the first single arc, so that when the working end rotates the screw, the plurality of first single arcs have the effect of dispersing stress, avoiding the work. The end breaks from the first groove during operation.

A screwdriver head structure, which includes: a system is provided with a working end, the working end is provided with a plurality of first working parts and a plurality of second working parts, the first working part and the second working part are connected by the The axis of the working end is arranged in a staggered ring shape, the first working part is in the shape of a bump, and the second working part is in the shape of a groove; the first working part is provided with a plurality of first grooves, and the first grooves are arranged in a straight line. The two ends of the first working part are provided with a first end and a second end, the outer diameter of the second end is larger than the first end, and the outer peripheral surface of the first working part is provided with a virtual first side surface , the first side extends from the second end to the first end; each first groove is provided with a first concave surface, and the first concave surface includes at least one first single arc.

The first concave surface has at least the first single arc, so that when the working end rotates the screw or each workpiece, the plurality of first single arcs have the effect of dispersing stress, preventing the working end from being in the process of operation. Breaking from the first groove, the working end has a better lifespan during operation. The plurality of first concave surfaces enable the working end to have more contact area, and when the working end is in contact with the first surface, the plurality of first concave surfaces have better rotational friction.

In order to make the committee members and those skilled in this art fully understand the effect of the present invention, the structure and composition of the present invention will be described below in conjunction with the drawings and figure numbers, but the following descriptions are only used to explain the implementation of the present invention For example, it is not intended to limit the present invention in any form, so any modifications and changes made under the spirit of the present invention should still fall within the protection scope of the present invention.

10: Ontology

11: Working end

12: The first working department

121: The first groove

122: first end

123: second end

124: The first side

125: the first concave surface

126: The first single arc

1261: first line

1262: second line

127: Connecting line

1271: The first distance

1272: Angle

128: second distance

129: The third distance

13: The second working department

14: end

141: Second concave surface

142: The second single arc

20: screw parts

21: The first side

22: The second side

Fig. 1, is the three-dimensional view of screwdriver bit structure of the present invention.

Fig. 2 is a cross-sectional view of the screwdriver head structure of the present invention.

Fig. 3 is the front view of the screwdriver head structure of the present invention.

Fig. 4 is a side view of the first operating state of the present invention.

Fig. 5 is a cross-sectional view at A-A of Fig. 4 of the present invention.

Fig. 6 is an enlarged view of B in Fig. 5 of the present invention.

Fig. 7 is a perspective view of the second embodiment of the present invention.

Fig. 8 is a perspective view of the third embodiment of the present invention.

Fig. 9 is a perspective view of the fourth embodiment of the present invention.

Fig. 10 is a sectional view of the fifth embodiment of the present invention.

Fig. 11 is a sectional view of the sixth embodiment of the present invention.

First please refer to Fig. 1 to Fig. 3, Fig. 1 is a three-dimensional exploded view of the structure of the screwdriver head of the present invention, Fig. 2 is a cross-sectional view of the structure of the screwdriver head of the present invention, Fig. 3 is a front view of the structure of the screwdriver head of the present invention, the present invention is related to A screwdriver head structure comprising:

A body 10, the body 10 is a screwdriver head structure, one end of the body 10 is provided with a working end 11, and the working end 11 is rotated to fit a workpiece, and the working end 11 is provided with a plurality of first working parts 12 And a plurality of second working parts 13, the first working part 12 and the second working part 13 are arranged in a staggered ring shape with the axis of the working end 11, and each first working part 12 is arranged on the two second working parts. Between the two working parts 13, each second working part 13 is arranged between the two first working parts 12, the first working part 12 is in the shape of a bump, and the second working part 13 is in the shape of a groove , the number of the first working part 12 and the second working part 13 is four, so that the section of the working end 11 is slightly cross-shaped; the first working part 12 is provided with a plurality of first grooves 121, the first grooves 121 are arranged linearly at intervals, each first groove 121 is parallel, the depth of each first groove 121 is the same, and the number of the first grooves 121 is At least three, or the number of the first groove 121 is four, five or six, the two ends of the first working part 12 are provided with a first end 122 and a second end 123, the first end 122 The outer diameter of the two ends 123 is larger than the first end 122, and the outer peripheral surface of the first working part 12 is provided with a virtual first side surface 124, and the first side surface 124 is extended from the second end 123 to the The first end 122, the first side surface 124 is inclined, and the first side surface 124 is linear; in order to reduce the lines of the working end 11 in Fig. 2, Fig. 2 omits the plurality of second working parts 13 first , each first groove 121 is provided with a first concave surface 125, and the first concave surface 125 comprises at least one first single arc 126, and the first concave surface 125 is formed by a partial arc of a first single arc 126 Constituted, the center of circles of the plurality of first single arcs 126 is connected with a connection line 127, the connection line 127 is parallel to the first side surface 124, and the connection line 127 and the first side surface 124 are parallel. There is a first distance 1271 between the first side surfaces 124, and there is a second distance 128 between the first single circular arc 126 closest to the first end 122 and the first end 122, and the second distance 128 to the first end 122. There is a third distance 129 between the first single arc 126 of the two ends 123 closest to the second end 123; the center of circle of the first single arc 126 is not within the range of the working end 11, the second A distance 1271 is less than the radius of the first single arc 126, or the first distance 1271 is less than half of the radius of the first single arc 126, and the second distance 128 is greater than the radius of the first single arc 126 radius, the second distance 128 is greater than the third distance 129, or the second distance 128 is nearly twice as long as the third distance 129, the second distance 128 is greater than the first distance 1271, and the second distance 128 is greater than the first distance 1271. Three distances 129 are close to the first distance 1271, the third distance 129 is the same as the first distance 1271; the working end 11 is provided with an end 14, the end 14 is conical, and the end 14 The most convex and concave part, that is, the middle part, is provided with a second concave surface 141, and the second concave surface 141 is formed by a second single arc 142. The first end 122 is arranged between the first working part 12 and the end part. between 14; the center of circle of the second single arc 142 is not within the scope of the working end 11, the second single arc 142 is larger than the first single arc 126, and the second single arc 142 has a maximum value During manufacture, the plurality of first concave surfaces 125 are first processed to the first concave surface 125 closest to the second end 123, and each of the first concave surfaces 125 from the second end 123 to the first end 122 in sequence, and then The second concave surface 141 is processed, and finally a plurality of second working parts 13 are processed to complete the entire working end 11 .

Please continue to refer to Fig. 4 to Fig. 6, Fig. 4 is a side view of the first operating state of the present invention, Fig. 5 is a sectional view of A-A of Fig. 4 of the present invention, and Fig. 6 is an enlarged view of B of Fig. 5 of the present invention , as can be clearly shown in the figure, there is a screw 20, and the screw 20 is provided with a first surface 21. Generally speaking, the first surface 21 will produce a second surface 22 due to the tolerance of processing factors. The second surface 22 is flat, and when one end of the working end 11 is placed in the first surface 21 to rotate the screw 20, the second concave surface 141 can accommodate the second surface 22, so that the end 14 and the first working part 12 has a better contact surface with the first surface 21, increasing the contact area between the first working part 12 and the screw part 20, so that when the working end 11 rotates the screw part 20 It has the function of improving operating torque and dispersing stress.

Please refer to FIG. 7 . FIG. 7 is a perspective view of the second embodiment of the present invention. The number of the first working part 12 and the second working part 13 is six, and the body 10 is a TROX screwdriver head structure.

Please continue to refer to shown in Figure 8, Figure 8 is a perspective view of the third embodiment of the present invention, the working end 11 is not provided with the second working part 13, the number of the first working part 12 is two, the two The first working part 12 is symmetrical with respect to the working end 11, and the body 10 is a flat head screwdriver structure.

Please refer to FIG. 9, which is a perspective view of the fourth embodiment of the present invention. The body 10 is L-shaped. Both ends of the body 10 are provided with the working end 11. The body 10 is a hexagonal wrench structure.

Please refer to FIG. 10, which is a cross-sectional view of the fifth embodiment of the present invention. In this embodiment, the connecting line 127 and the first side surface 124 are non-parallel, and the closer to the second end 123 The first concave surface 125 has a greater depth, and there is an included angle 1272 between the connecting line 127 and the first side surface 124, and the included angle 1272 is between 2 degrees and 8 degrees, or the included angle 1272 is less than 5 degrees.

Please continue to refer to Figure 11, which is a cross-sectional view of the sixth embodiment of the present invention. In this embodiment, the first concave surface 125 includes a first single arc 126, a first line 1261 and a second line 1262, the first line 1261 is set on one side of the first single arc 126, the second line 1262 is set on the other side of the first single arc 126, the first single arc 126 is set on the first Between the line 1261 and the second line 1262, the first line 1261 and the second line 1262 are tangent to the first single arc 126, and the first line 1261 is relative to the axis of the working end 11. In a winding shape.

The advantage of screwdriver head structure of the present invention is that:

1. The first concave surface 125 has at least the first single arc 126, so that when the working end 11 rotates the screw 20, the plurality of first single arcs 126 have the effect of dispersing stress, preventing the working end from 11 breaks from the first groove 121 during operation, and the working end 11 has a better lifespan during operation.

2. The plurality of first concave surfaces 125 enable the working end 11 to have more contact area. When the working end 11 is in contact with the first surface 21, the plurality of first concave surfaces 125 have better rotational friction.

3. The second concave surface 141 can accommodate the second surface 22, so that there can be more close contact area between the end portion 14 and the first working portion 12 and the first surface 21, increasing the working end 11 The contact area between the screw part 20 and the screw part 20 can avoid damage caused by relative friction when the working end 11 rotates the screw part 20, and has the effect of improving the operating torque and dispersing stress. The second concave surface 141 is provided The second surface 22 can be accommodated, so that the main body 10 can retain the structure of the end portion 14, the shape of the working end 11 can be more the same as the conventional one, and the end portion 14 should basically have increased rotational torque and To facilitate fitting, the structures of the end portion 14 and the second concave surface 141 have the best of both worlds.

4. The number of the first grooves 121 is at least three, that is, the working end 11 has the function of turning at least three screw parts 20 of different sizes and specifications, which increases the expandability and practicality of the present invention.

5. The first working part 12 can be applied to a variety of screwdriver bits such as TROX screwdriver bits, flat screwdriver bits, or used in hexagonal wrench structures, etc. The screwdriver bit structure of the present invention has variability and expandability.

Therefore, the screwdriver head structure of the present invention has industrial applicability, novelty and progress, and can meet the application requirements of a patent for invention, and an application is filed according to law.

10: Ontology

11: Working end

12: The first working department

121: The first groove

13: The second working department

14: end

141: Second concave surface

Claims (11)

A screwdriver head structure, which includes: a body, the system is a screwdriver head structure, one end of the body is provided with a working end, the working end is used to fit a workpiece and rotate, and the working end is provided with a plurality of first The working part and the plurality of second working parts, the first working part and the second working part are arranged in a staggered ring around the axis of the working end, and each first working part is set on the two second working parts Each second working part is set between the two first working parts, the first working part is in the shape of a bump, and the second working part is in the shape of a groove; the first working part is set There are a plurality of first grooves, the first grooves are arranged in a straight line at intervals, the two ends of the first working part are provided with a first end and a second end, and the outer diameter of the second end is larger than that of the first At one end, the outer peripheral surface of the first working part is provided with a virtual first side surface, and the first side surface is extended from the second end to the first end; each first groove is provided with a first Concave surface, the first concave surface includes at least one first single arc, the first concave surface is formed by a partial arc of a first single arc, the centers of the plurality of first single arcs are connected There is a connection line, the connection line is parallel to the first side surface, there is a first distance between the connection line and the first side surface, and the first end closest to the first end There is a second distance between a single arc and the first end, and a third distance between the first single arc closest to the second end and the second end. The screwdriver head structure as described in claim 1, wherein the number of the first working part and the second working part are both four, so that the cross section of the working end is roughly cross-shaped. The screwdriver head structure as claimed in item 1, wherein, between each first groove is a Parallel, the depth of each first groove is the same, the number of the first groove is at least three, or the number of the first groove is four, five or six, the first side The surface is inclined, and the first side surface is linear. The screwdriver head structure as described in Claim 1, wherein, the working end is provided with an end, and the end is in the shape of a conical surface, and a second concave surface is provided at the most convex and concave part of the end, that is, the middlemost part, and the second concave surface is arranged at the middle. The two concave surfaces are formed by a second single arc, and the first end is arranged between the first working part and the end. The screwdriver head structure according to claim 1, wherein the center of the first single arc is not within the range of the working end, the first distance is smaller than the radius of the first single arc, or the first distance is less than half the radius of the first single arc, the second distance is greater than the radius of the first single arc, the second distance is greater than the third distance, or the second distance is close to the third distance Twice as long, the second distance is greater than the first distance, the third distance is close to the first distance, or the third distance is the same as the first distance. The screwdriver head structure according to claim 1, wherein the center of the second single arc is not within the range of the working end, the second single arc is larger than the first single arc, and the second single arc is larger than the first single arc. The system has a maximum value. The screwdriver bit structure according to claim 4, wherein, during manufacture, the first concave surface closest to the second end is processed first, and each of the first concave surfaces from the second end to the first end is sequentially processed. The first concave surface is then processed to the second concave surface, and finally a plurality of second working parts are processed to complete the entire working end. The screwdriver head structure as described in claim 4, wherein a screw is provided, and a first surface is arranged inside the screw. Generally speaking, the tolerance of the first surface due to processing factors will produce A second surface, the second surface is flat, and when one end of the working end is inserted into the first surface to rotate the screw, the second concave surface can accommodate the second surface. The screwdriver bit structure as described in claim 1, wherein the number of the first working part and the second working part are both six, the system is a TROX screwdriver head structure, or the system is a flat-word screwdriver head structure, or the system is L-shaped, both ends of the body are provided with the working end, and the system is a hexagonal wrench structure. The screwdriver head structure as described in Claim 1, wherein the first concave surface is formed by a partial arc of a first single arc, and the centers of the plurality of first single arcs are connected to each other to have a connection line, the connection line and the first side surface are non-parallel, the closer to the second end the first concave surface has a greater depth, and there is an included angle between the connection line and the first side surface , the included angle is between 2 degrees and 8 degrees, or the included angle is less than 5 degrees. The screwdriver head structure according to claim 1, wherein the first concave surface includes a first single arc, a first line and a second line, and the first line is set on one side of the first single arc , the second line is set on the other side of the first single arc, the first single arc is set between the first line and the second line, the first line and the second line are opposite to the first line A single arc is tangent, and the first line is wound around the axis of the working end.

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