Patent Application
20250010455
The present invention relates to a hand tool and, more particularly, to a wrench structure.
A conventional open wrench was disclosed in the applicant's U.S. Pat. No. 9,981,363, and comprises a handle 11 provided with a depression which reduces the whole weight of the open wrench and saves the cost of material. However, the depression reduces the torque of the open wrench so that when the handle 11 is easily broken at the middle of the depression when a force applied on the open wrench is too large during rotation of the handle 11. In addition, the handle 11 is easily bent at the middle of the depression.
A conventional wrench was disclosed in the applicant's U.S. Patent Publication No. 20180015609, and comprises a handle 11 provided with a first block 113. The first block 113 protrudes from the top and the bottom of the first face 111. The handle 11 has a first length 31. The maximum length of the first block 113 defines a second length 32. A proportion of the first length 31 and the second length 32 is ranged between four to one (4:1) and two to one (2:1). The handle 11 has a first thickness 33. The minimum thickness of the recess 112 defines a second thickness 34. The first block 113 has a third thickness 35. Thus, the first block 113 has the second length 32 and the third thickness 35 so that the first block 113 increases the maximum rotation torque of the handle 11. However, the handle 11 does not have any holding portion so that when the user holds the handle 11, the user's hand easily slips from the handle 11.
In accordance with the present invention, there is provided a wrench structure comprising a wrench body. The wrench body is provided with a handle. The handle has a top and a bottom each provided with two first faces. Each of the top and the bottom of the handle is provided with two first recessed portions. The handle has a center provided with a projection. The projection has two second faces which are provided on a top and a bottom of the projection. The second faces protrude from the first faces. The handle is provided with eight ribs. Each of the first recessed portions is defined between two of the ribs. The handle has two sides each provided with two first side faces. The projection has two second side faces which are provided on two sides of the projection. The second side faces protrude from the first side faces. A first guide angle is provided between each of the first side faces and one of the second side faces. The handle has a first end provided with a first rotation portion. The handle has a second end provided with a second rotation portion.
According to the primary advantages of the present invention, each of the top and the bottom of the handle is provided with the two first recessed portions. The handle is provided with the projection. The projection is provided between the first recessed portions. The first thickness is more than the second thickness. The first recessed portions reduce the weight of the handle. The projection increases the rotation torque when the handle is rotated. Thus, the handle has a balance between the weight and the rotation torque. The handle is provided with eight ribs. Any two of the ribs are arranged on two sides of each of the first recessed portions. The ribs have a rotation torque. Thus, the handle has a rotation toughness by provision of the first recessed portions and the ribs so that the handle is not broken easily. The handle has a reduced weight by provision of the first recessed portions, increases the rotation torque by provision of the projection, and has a rotation toughness by provision of the first recessed portions and the ribs.
Referring to the drawings and initially to
The handle 11 is provided with eight ribs 116. The eight ribs 116 are arranged symmetrically relative to the projection 113. Each of the first recessed portions 112 is defined between two of the ribs 116. The two of the ribs 116 are arranged symmetrically relative to each of the first recessed portions 112. Each of the ribs 116 has a first end connecting one of the first faces 111 and a second end connecting one of the second faces 114. Each of the ribs 116 has a thickness increased gradually from one of the first faces 111 toward one of the second faces 114. Each of the ribs 116 has different horizontal planes.
The handle 11 has two sides each provided with two first side faces 117. The first side faces 117 are perpendicular to the first faces 111. The projection 113 has two second side faces 118 which are provided on two sides of the projection 113. The second side faces 118 protrude from the first side faces 117. The second side faces 118 are perpendicular to the second faces 114. A first guide angle (or corner) 119 is provided between each of the first side faces 117 and one of the second side faces 118. The first guide angle 119 has an arcuate concave shape or an oblique shape.
The handle 11 has a first end provided with a first rotation portion 12. The first rotation portion 12 is an open end. The first rotation portion 12 is provided with two third faces 121. Each of the third faces 121 has a height more than that of one of the first faces 111. A second corner 122 is provided on a connection of the first rotation portion 12 and the handle 11. A second guide angle (or corner) 123 is provided between each of the third faces 121 and the handle 11. The second guide angle 123 has a chamfered shape or an oblique shape. Each of the third faces 121 is provided with a depression 124 close to the handle 11. The depression 124 has a horizontal height less than that of one of the third faces 121. The depression 124 is provided with a protruding second indication (or marking) 125. The second indication 125 is a trademark or a specification or a size of the wrench structure.
The handle 11 has a second end provided with a second rotation portion 13. The second rotation portion 13 is a box end.
The handle 11 has a first length 31. The projection 113 has a second length 32. The first length 31 is more than the second length 32. The first length 31 is 2.5 times to seven (7) times of the second length 32. Alternatively, the first length 31 is three (3) times to 5.5 times of the second length 32.
The projection 113 has a first width 33. The handle 11 has a second width 34. Each of the first recessed portions 112 has a third width 35. Each of the ribs 116 has a fourth width 36. The first width 33 is more than the second width 34. The second width 34 is more than the third width 35. The third width 35 is more than the fourth width 36. The first width 33 is 1.2 times to 1.5 times of the second width 34. Alternatively, the first width 33 is 1.3 times to 1.4 times of the second width 34. The second width 34 is 1.5 times to 1.8 times of the third width 35. The third width 35 is 2.5 times to four (4) times of the fourth width 36. Alternatively, the third width 35 is three (3) times to 3.5 times of the fourth width 36.
A first thickness 41 is defined between the second faces 114. A second thickness 42 is defined between the first faces 111. The shallowest position of each of the first recessed portions 112 has a third thickness 43. The third thickness 43 is close to the first rotation portion 12 or the second rotation portion 13. The deepest position of each of the first recessed portions 112 has a fourth thickness 44. The fourth thickness 44 is close to the projection 113. The first thickness 41 is more than the second thickness 42. The second thickness 42 is more than the third thickness 43. The third thickness 43 is more than the fourth thickness 44. The first thickness 41 is 1.3 times to 1.7 times of the second thickness 42. Alternatively, the first thickness 41 is 1.4 times to 1.6 times of the second thickness 42.
Each of the ribs 116 has an angle 45. The angle 45 is less than five degrees (5°).
Referring to
Referring to
Accordingly, the wrench structure of the present invention has the following advantages.
1. Each of the top and the bottom of the handle 11 is provided with the two first recessed portions 112. The handle 11 is provided with the projection 113. The projection 113 is provided between the first recessed portions 112. The first thickness 41 is more than the second thickness 42. The first recessed portions 112 reduce the weight of the handle 11. The projection 113 increases the rotation torque when the handle 11 is rotated. Thus, the handle 11 has a balance between the weight and the rotation torque.
2. The handle 11 is provided with eight ribs 116. Any two of the ribs 116 are arranged on two sides of each of the first recessed portions 112. The ribs 116 have a rotation torque. Thus, the handle 11 has a rotation toughness by provision of the first recessed portions 112 and the ribs 116 so that the handle 11 is not broken easily.
3. The handle 11 has a reduced weight by provision of the first recessed portions 112, increases the rotation torque by provision of the projection 113, and has a rotation toughness by provision of the first recessed portions 112 and the ribs 116. Thus, the wrench structure has three structural benefits.
4. When the wrench body 10 is driven, the user's thumb rests on the first guide angle 119 which facilitates the user operating and rotating the handle 11.
5. The first thickness 41 of the projection 113 is more than the second thickness 42 of the handle 11 so that the user's thumb holds the projection 113 to operate and rotate the handle 11 easily.
6. When the user holds the handle 11, the user's thumb presses the first guide angle 119 or the connection of each of the first recessed portions 112 and the projection 113, so that the handle 11 is driven and rotated easily and conveniently.
7. When the user holds the handle 11, the user's thumb abuts the projection 113, the connection of each of the first recessed portions 112 and the projection 113 or the first guide angle 119 according to the practical requirement.
8. The handle 11 is provided with the first faces 111, the first recessed portions 112, the projection 113, and the ribs 116. The handle 11 also has the first thickness 41, the second thickness 42, the third thickness 43, the fourth thickness 44, and the angle 45. In such a manner, the handle 11 has different thickness and a determined angle. Thus, the handle 11 has a three-dimensional appearance by provision of different thickness and the angle 45, thereby enhancing the aesthetic quality of the wrench structure.
Although the invention has been explained in relation to its preferred embodiment(s) as mentioned above, it is to be understood that many other possible modifications and variations can be made without departing from the scope of the present invention. It is, therefore, contemplated that the appended claim or claims will cover such modifications and variations that fall within the scope of the invention.
