Patent Publication Number: US-11040435-B2

Title: Hex wrench improved structure

Description:
BACKGROUND OF THE INVENTION 
     Field of Invention 
     The present invention relates to the technical field of hand tools, and more particularly to a hex wrench improved structure. 
     Related Art 
     The conventional hex wrench has a working end, and the working end has a rod shape and is provided with six equally divided planes, positions where the six planes are connected have angular edges respectively, and each of the angular edges is provided with a groove; thereby, the inner surface of an accommodating groove of a cap screw after being interlocked and worn by the angular edges can achieve objects of being tightly pressed to apply force, not easy to slip, and with better efficiency of application of force. 
     However, the hex wrench disclosed in the aforementioned patent has an acute angle of angular edge that is too small, so it has defects of being easily collapsed and cannot withstand excessive torque. 
     In view of this, it is necessary to improve the defects of the aforementioned conventional hex wrench, in response to the aforementioned defects, and based on many years of experience in engaging in the manufacturing, development and design of related products, the inventor has finally obtained a hex wrench improved structure of the present invention through design and development. 
     SUMMARY OF THE INVENTION 
     An object of the present invention is to solve the defect that the acute angle of angular edge of the hex wrench with the recessed groove is too small, thereby preventing the hex wrench from collapsing. 
     In order to achieve the foregoing object, the present invention is a hex wrench improved structure, comprising: 
     a body, one end thereof has six equally divided planes, an abutting angle is formed between each of the two planes, at least one of the planes is disposed with a groove, the groove has two inclined surfaces, one side of each of the two inclined surfaces is connected to the abutting angle of the two planes, another sides of the two inclined surfaces are connected to each other, and an obtuse angle is included between the two inclined surfaces. 
     In one preferred embodiment, the obtuse angle is between 100 degrees and 130 degrees. 
     In one preferred embodiment, a bottom surface is included between the two inclined surfaces, the two inclined surfaces extend and an angle included after intersection is the obtuse angle. 
     In one preferred embodiment, another end of the body opposite to the groove is spherical, and is disposed with six equally divided abutting surfaces, an engage angle is formed between each of the two abutting surfaces, an included angle is included between each of the two abutting surfaces, and the included angle is greater than a right angle and is an obtuse angle. 
     In one preferred embodiment, the engage angle is between 100 degrees and 130 degrees. 
     Thereby, the hex wrench can be pressed tightly against an inner wall surface of a hole in a screw for inserting a cap screw tool to apply force, so that the hex wrench is not easy to slip, and it is easier to turn and lock or adjust the screw, and it does not have an acute angle, making it difficult to be damaged as a whole and more durable. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view of a preferred embodiment of the present invention; 
         FIG. 2  is a side view of a preferred embodiment of the present invention; 
         FIG. 3  is a partial enlarged view of one end of a preferred embodiment of the present invention; and 
         FIG. 4  is a partial enlarged view of another end of a preferred embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The foregoing and other technical contents, features and effects of the present invention to achieve the above object will be clearly presented in the following detailed description of the preferred embodiments with reference to the drawings. 
     Referring to  FIG. 1  to  FIG. 4 , the present invention is a hex wrench improved structure, comprising: 
     a body  10 , one end thereof has six equally divided planes  11 , an abutting angle  12  is formed between each of the two planes  11 , at least one of the planes  11  is disposed with a groove  13 , the groove  13  has two inclined surfaces  131 , one side of each of the two inclined surfaces  131  is connected to the abutting angle  12  of the two planes  11 , another sides of the two inclined surfaces  131  are connected to each other, and an obtuse angle θ 1  is included between the two inclined surfaces  131 ; thereby, the hex wrench can be pressed tightly against an inner wall surface of an inner hexagonal hole in a screw to apply force, so that the hex wrench is not easy to strip, and it is easier to turn and lock or adjust the screw tightness, and the hex wrench does not have structures of acute angle, making it difficult to collapse and more durable. 
     In the hex wrench improved structure, wherein the obtuse angle θ 1  is between 100 degrees and 130 degrees. 
     In the hex wrench improved structure, wherein a bottom surface  132  is included between the two inclined surfaces  131 , the two inclined surfaces  131  extend and an angle included after intersection is the obtuse angle θ 1 . 
     Another end of the body  10  opposite to the groove  13  is spherical, and is disposed with six equally divided abutting surfaces  14 , an engage angle θ 2  is formed between each of the two abutting surfaces  14 , an included angle is included between each of the two abutting surfaces  14 , and the included angle is greater than a right angle and is an obtuse angle. Thereby, the hex wrench can be pressed tightly against an inner wall surface of a hole in a screw for inserting a cap screw tool to apply force, so that the hex wrench is not easy to slip, and it is easier to turn and lock or adjust the screw, and it does not have an acute angle, making it difficult to be damaged as a whole and more durable. 
     In the hex wrench improved structure, wherein the engage angle θ 2  is between 100 degrees and 130 degrees. 
     It can be known from the above that, the hex wrench of the present invention has not been disclosed and is indeed novel, and its features are not those that can be easily combined and accomplished by those having ordinary skill in the art, and thus are more in line with the requirements of non-obviousness. The grooves  13  formed on the six planes  11  can achieve the efficacies of not easy to slip when force is applied in turning, as well as easy to turn and lock or adjust the screw tightness, and it does not have an acute angle, so that the overall structure is robust, not easy to collapse and durable. 
     The foregoing description of the preferred embodiments is a detailed description of the technical features of the present invention, however, those of ordinary skill in the art can of course change and modify the present invention without departing from the spirit and principles of the present invention. Simple modifications or alterations may be made without departing from the scope defined by the appended claims of the present invention. 
     In summary, the hex wrench provided by the present invention has indeed achieved the objects of the present invention. The combination structure is not found in the same type of products, nor has it been disclosed before the application, and therefore the application is submitted in accordance with the provisions of the Patent Law.