TWI854863B - Hand tool drive head structure - Google Patents

Abstract

The present invention relates to a hand tool drive head structure, which includes: a first body having a base portion, a drive portion, a round seat, a first chamfer, four second chamfers, four first end faces and a first size; the radius of the first chamfer is greater than 1mm, the radius of the second chamfer is greater than the radius on the specification, or the radius of the second chamfer is greater than twice the radius on the specification, and the first chamfer and the second chamfer both have a larger radius; the first size is to match the length of the specification; a second body is sleeved on the round seat, the material of the second body is slightly better than that of the first body, or the structural strength of the second body is greater than that of the first body, and the second body is provided with a third chamfer, a first sleeve portion, a second sleeve portion and a second end face.

Description

Hand tool drive head structure

The present invention is related to a hand tool drive head structure, and in particular to a hand tool drive head structure, in which the base and the round seat, as well as the round seat and the drive part have better structural toughness. The material or structural strength of the second body is greater than that of the first body, and has the best of both worlds.

As we know, the commonly used hand tool drive head structure, such as US Patent No. US11433514B2, Taiwan Patent Application No.: 109101822, Certificate No.: I714439, Patent Name: Drive Head Structure of Socket Wrench, the structure of the patent case is: a drive head structure of a socket wrench, which includes: a mounting base 111, It includes a plurality of convex arc surfaces 1111 and at least one protruding portion 2112; a joint portion 112, which is arranged on the mounting base 111; wherein the mounting base 111 is cylindrical, and the joint portion 112 is rectangular; wherein each of the convex arc surfaces 1111 contacts each side surface of the joint portion 112; wherein the at least one protruding portion 2112 is convex arc-shaped or convex point-shaped.

However, the defects of the drive head structure of this conventional socket wrench are:

1. Please refer to Figures 1 and 3 of the US Gazette. The structure of the multiple convex arc surfaces 2111 and the raised portion 2112 should make the junction of the mounting base 211 and the joint portion 212 have better structural toughness, that is, it is less likely to break when rotating from the junction of the multiple convex arc surfaces 2111 and the joint portion 212. However, the joint portion 112 is mainly used to connect another hand tool with a square groove, such as a sleeve. The square groove has its own specifications, such as the German standard DIN specification commonly used in the Taiwanese hand tool industry. The raised portion 2112 will interfere with the square groove, causing the joint portion 112 to fit the square groove incorrectly.

2. Please refer to the specification book DIN3120. The specification states that the joint 212 and the mounting base 211 should have a rounded corner. For example, the specification states that the joint 212 should have a rounded corner of 0.8mm at one-fourth of the joint. The convex arc surface 2111 will have a different rounded corner structure from the specification. The convex arc surface 2111 will cause structural interference during the socketing.

In view of the above shortcomings of the conventional structure, the inventor, with many years of manufacturing and design experience in related industries, finally came up with a product of hand tool drive head structure that can solve the conventional shortcomings.

In the hand tool driver head structure, the multiple convex arc surfaces and the raised portion structure should make the mounting base and the joint portion have better structural toughness. In the hand tool driver head structure of the present invention, the base portion and the round seat, as well as the round seat and the driver portion have better structural toughness. The material or structural strength of the second body is greater than that of the first body.

The present invention relates to a hand tool drive head structure, which includes: a first body having a base portion, a drive portion, a round seat, a first chamfer, four second chamfers, four first end faces and a first size; the radius of the first chamfer is greater than 1mm, the radius of the second chamfer is greater than the radius on the specification, or the radius of the second chamfer is greater than twice the radius on the specification, and the first chamfer and the second chamfer both have a larger radius; the first size is to match the length of the specification; a second body is sleeved on the round seat, the material of the second body is slightly better than that of the first body, or the structural strength of the second body is greater than that of the first body, and the second body is provided with a third chamfer, a first sleeve portion, a second sleeve portion and a second end face.

The first chamfer is provided between the base and the round seat, and the first chamfer has a larger radius. The second chamfer is provided between the round seat and the driving part, and the radius of the second chamfer is larger than the radius in the specification. The first chamfer and the second chamfer both have larger radii, and the base and the round seat, and the round seat and the driving part have better structural toughness, and the first body has better structural toughness in structure. The material or structural strength of the second body is greater than that of the first body, and it has structural toughness and structural strength and has the best of both worlds.

In order to enable the members of the Jun Bureau and those familiar with this technology to fully understand the effects of the present invention, the structure and composition of the present invention are explained below with diagrams and figure numbers. However, the following is only used to explain the implementation examples of the present invention and is not intended to limit the present invention in any form. Therefore, any modifications and changes made within the spirit of the present invention should still fall within the scope of protection of the present invention.

10: The first entity

11: Base part

12: Drive unit

13: Round seat

14: First lead angle

15: Second lead angle

151: First end face

16: First size

17: Groove

18: Inner circumference

20: Second body

21: The third lead angle

22: The first set of joints

23: The second set of parts

24: Second end face

30: Wrench

31: Storage tank

40: Cover

Figure 1 is a three-dimensional exploded view of the hand tool drive head structure of the present invention.

Figure 2 is a front view of the first body of the hand tool driving head structure of the present invention.

Figure 3 is a cross-sectional view of the A-A section of the structure diagram 2 of the hand tool driving head of the present invention.

Figure 4 is a three-dimensional assembly diagram of the hand tool drive head structure of the present invention.

Figure 5 is a front view of the hand tool driving head structure of the present invention during operation.

Figure 6 is a cross-sectional view of the C-C portion of the structure diagram 5 of the hand tool driving head of the present invention.

Figure 7 is a three-dimensional exploded view of the second embodiment of the present invention.

Figure 8 is a front view of the first body of the second embodiment of the present invention.

Figure 9 is a cross-sectional view of the A-A section of the structure diagram 8 of the hand tool driving head of the present invention.

Figure 10 is a cross-sectional view of the C-C portion of the second embodiment of the present invention during operation.

Figure 11 is a cross-sectional view of the C-C portion of the third embodiment of the present invention during operation.

First, please refer to Figures 1 to 4. Figure 1 is a three-dimensional exploded view of the hand tool drive head structure of the present invention. Figure 2 is a front view of the first body 10 of the hand tool drive head structure of the present invention. Figure 3 is a cross-sectional view of the A-A section of Figure 2 of the present invention. Figure 4 is a three-dimensional assembly view of the hand tool drive head structure of the present invention. The present invention is related to a hand tool drive head structure, which includes: a first body 10, the The first body 10 is a driving head structure to be mounted on a quadrangular groove in a hand tool. One end of the first body 10 is provided with a base portion 11, and the base portion 11 is in a ring-shaped arrangement of teeth. The first body 10 is a ratchet component. The other end of the first body 10 is provided with a protruding driving portion 12, and the driving portion 12 is in a quadrangular head shape. The driving portion 12 can be provided for another hand tool having the quadrangular groove. The tool is fitted, a round seat 13 is provided between the driving part 12 and the base part 11, and the round seat 13 is in the shape of a cylinder. A first chamfer 14 is provided between the base part 11 and the round seat 13, and the first chamfer 14 is in the shape of a rounded corner. Four second chamfers 15 and four first end faces 151 are provided between the four faces of the driving part 12 and the round seat 13, and the second chamfer 15 is in the shape of a rounded corner. The first end face 151 is in a planar shape. The length of the driving portion 12 after deducting the second chamfer 15 is provided with a first dimension 16. The radius of the first chamfer 14 is greater than 1 mm, or the radius of the first chamfer 14 is greater than 2 mm, the radius of the second chamfer 15 is greater than the radius in the specification, or the radius of the second chamfer 15 is greater than twice the radius in the specification. For example, if the four When the specification is divided, the radius of the second chamfer 15 is greater than 0.8mm or greater than 1.6mm, or the first chamfer 14 and the fourth second chamfer 15 are both greater than 2mm; the first dimension 16 is to match the specification length, that is, to match the German national standard DIN specification. For example, if the drive part 12 is a four-divided specification, the first dimension 16 is 14.7mm or slightly greater than 14.7mm; a second body 20, the second body 20 is assembled with the first body 10, the second body 20 is sleeved on the round seat 13, the second body 20 and the round seat 13 are in a pivoting structure, or the second body 20 and the round seat 13 are not in a pivoting structure, the material of the second body 20 is slightly better than the first body 10, or the structural strength of the second body 20 is The second body 20 is larger than the first body 10, and is in the shape of a hollow disc. The cross section of the second body 20 is in the shape of an L-shaped body. The inner circumference of the second body 20 is provided with a third chamfer 21, and the third chamfer 21 is abutted against the first chamfer 14. The third chamfer 21 is in the shape of a chamfer. One end of the second body 20 is provided with a first sleeve portion 22. The second body 20 The other end is provided with a second sleeve portion 23, the diameter of the second sleeve portion 23 is larger than the diameter of the first sleeve portion 22, the outer diameter of the second sleeve portion 23 is slightly larger than the outer diameter of the base portion 11, and the second body 20 is provided with a second end face 24, the second end face 24 is flush with the first end face 151, or the second end face 24 is slightly not flush with the first end face 151.

Please continue to refer to FIG. 5, which is a front view of the hand tool drive head structure of the present invention when in operation. FIG. 6 is a cross-sectional view of FIG. 5 at C-C. A wrench 30 is provided, and the wrench 30 is provided with a receiving groove 31. The first body 10 is assembled with the wrench 30. The first body 10 is pivoted in the receiving groove 31. The driving part 12 is protruded outside the receiving groove 31. A cover 40 is provided. The cover 40 is assembled with the second body 20 and the wrench 30. The cover 40 is sleeved with the first sleeve part 22. The second sleeve part 23 is compatible with the receiving groove 31. The cover 40 closes the opening of the receiving groove 31.

Please continue to refer to FIG. 7, which is a three-dimensional exploded view of the second embodiment of the hand tool driving head structure of the present invention, FIG. 8 is a front view of the first body 10 of the second embodiment, and FIG. 9 is a cross-sectional view of the A-A section of FIG. 8. In this embodiment, the first body 10 is additionally provided with a groove 17, and the groove 17 is provided between the base portion 11 and the round seat 13, and the opening direction of the groove 17 is toward the round seat 13, and the inner diameter of the groove 17 is larger than the outer diameter of the round seat 13 and smaller than the outer diameter of the base portion 11. 13 partially protrudes outside the groove 17, or at least half of the length of the round seat 13 protrudes outside the groove 17, the first chamfer 14 is arranged in the groove 17, and the inner circumference of the groove 17 forms an inner circumference 18; the second body 20 is in the shape of a ring body thin sheet, that is, the first sleeve part 22 and the second sleeve part 23 are in the same diameter shape, the second body 20 is sleeved on the round seat 13, the second body 20 is sleeved in the groove 17, and the second body 20 partially protrudes outside the groove 17.

Please refer to Figure 10, which is a cross-sectional view of the C-C portion of the second embodiment during operation. The second sleeve portion 23 is against the inner peripheral surface 18, and the cover body 40 is sleeved with the first sleeve portion 22.

Please refer to Figure 11, which is a cross-sectional view of the C-C portion of the third embodiment of the hand tool driving head structure of the present invention during operation. In this embodiment, the first body 10 is not provided with a PUSH structure.

The advantages of the hand tool drive head structure of the present invention are:

1. As shown in FIG. 3, the first chamfer 14 is provided between the base 11 and the round seat 13. The first chamfer 14 has a larger radius. The second chamfer 15 is provided between the round seat 13 and the driving portion 12. The radius of the second chamfer 15 is larger than the radius in the specification. The first chamfer 14 and the second chamfer 15 both have a larger radius. The base 11 and the round seat 13 and the round seat 13 and the driving portion 12 have better structural toughness. The first body 10 has better structural toughness in structure.

2. The material or structural strength of the second body 20 is greater than that of the first body 10. The second body 20 is also provided with the third chamfer 21 which abuts against the first chamfer 14. After the first body 10 and the second body 20 are assembled on the wrench 30, the first body 10 has toughness and the second body 20 has structural strength. The hand tool drive head structure has toughness and structural strength and has the best of both worlds.

3. The second chamfer 15 is rounded, and the structure of the second chamfer 15 is the same as the specification. When the second chamfer 15 is larger, as long as the first size 16 is in accordance with the specification, the driving part 12 can still fit with the square groove without interference. The driving part 12 and the second chamfer 15 have the same specifications, good structural toughness, and no interference when fitting together.

4. As shown in Figure 6, the second body 20 is L-shaped. The second body 20 has better strength.

5. Between the first body 10, the second body 20, the wrench 30 and the cover 40, the second body 20 has an assembly structure with the first body 10, the wrench 30 and the cover 40. The second body 20 is supported on the wrench 30 and the cover 40 at the same time. The second body 20 has a better assembly structure.

Therefore, the hand tool drive head structure of this invention has industrial applicability, novelty and advancement, and can truly meet the application requirements for invention patents, so an application is filed in accordance with the law.

10: The first entity

11: Base part

12: Drive unit

13: Round seat

14: First lead angle

15: Second lead angle

151: First end face

20: Second body

21: The third lead angle

22: The first set of joints

23: The second set of parts

24: Second end face

Claims (10)

A hand tool drive head structure includes: a first body, a base portion is provided at one end of the first body, a drive portion is provided at the other end of the first body, the drive portion is in the shape of a square head, a round seat is provided between the drive portion and the base portion, the round seat is in the shape of a cylinder, a first chamfer is provided between the base portion and the round seat, the first chamfer is in the shape of a rounded corner, four second chamfers and four first end faces are provided between four faces of the drive portion and the round seat, the second chamfers are in the shape of rounded corners, the first end face is in the shape of a plane, and the length of the drive portion after deducting the second chamfer has a first dimension; the radius of the first chamfer is greater than 1 mm, the radius of the second chamfer is greater than the radius in the specification, or the radius of the second chamfer is greater than the radius in the specification. twice, the first chamfer and the second chamfer both have a larger radius; the first dimension is to match the specification length; a second body, the second body is assembled with the first body, the second body is sleeved on the round seat, the second body and the round seat are in a pivotal structure, or the second body and the round seat are not in a pivotal structure, the material of the second body is slightly better than the first body, or the structural strength of the second body is greater than the first body, the inner circumference of the second body is provided with a third chamfer, the third chamfer is against the first chamfer, the third chamfer is in a rounded shape, one end of the second body is provided with a first sleeve portion, the other end of the second body is provided with a second sleeve portion, and the second body is provided with a second end face. As described in claim 1, the hand tool driving head structure, wherein the first body is a driving head structure to be mounted in a quadrangular groove in a hand tool, the base portion is a ring-shaped tooth arrangement, and the first body is a ratchet component. A hand tool drive head structure as described in claim 1, wherein the radius of the first lead angle is greater than 2 mm. The hand tool drive head structure as described in claim 1, wherein the radius of the second chamfer is greater than twice the radius on the specification, and if it is a quarter specification, the radius of the second chamfer is greater than 0.8mm or greater than 1.6mm. The hand tool drive head structure as described in claim 1, wherein the first chamfer angle and the four second chamfer angles are both greater than 2 mm. The hand tool drive head structure as described in claim 1, wherein the first dimension is in accordance with the German national standard DIN specification. If the drive part is a quarter-size specification, the first dimension is 14.7 mm or slightly larger than 14.7 mm. The hand tool driving head structure as described in claim 1, wherein the second body is in the shape of a hollow disc, or the cross section of the second body is in the shape of an L-shape, the diameter of the second sleeve portion is larger than the diameter of the first sleeve portion, and the outer diameter of the second sleeve portion is slightly larger than the outer diameter of the base portion. A hand tool drive head structure as described in claim 1, wherein the second end surface is flush with the first end surface, or the second end surface is slightly uneven with the first end surface. As described in claim 1, the hand tool driving head structure includes a wrench, the wrench includes a receiving groove, the first body is assembled with the wrench, the first body is pivoted in the receiving groove, the driving part is protruded outside the receiving groove, a cover is assembled with the second body and the wrench, the cover is sleeved with the first sleeve part, the second sleeve part is compatible with the receiving groove, and the cover closes the opening of the receiving groove. The hand tool driving head structure as described in claim 1, wherein the first body is additionally provided with a groove, the groove is provided between the base portion and the round seat, the opening direction of the groove is toward the round seat, the inner diameter of the groove is larger than the outer diameter of the round seat and smaller than the outer diameter of the base portion; the round seat partially protrudes outside the groove, or at least half of the length of the round seat protrudes outside the groove, the first chamfer is provided in the groove, and the inner circumference of the groove forms an inner circumference; the second body is in the shape of an annular thin sheet, that is, the first sleeve portion and the second sleeve portion are in the same diameter, the second body is sleeved on the round seat, the second body is sleeved in the groove, and the second body partially protrudes outside the groove.

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