CN114126806B

CN114126806B - Advanced gripping device

Info

Publication number: CN114126806B
Application number: CN202080052119.7A
Authority: CN
Inventors: 保罗·酷酷卡; 托马斯·斯蒂芬·酷酷卡
Original assignee: Reinforcement Holdings Co ltd
Current assignee: Reinforcement Holdings Co ltd
Priority date: 2019-07-30
Filing date: 2020-07-30
Publication date: 2023-08-04
Anticipated expiration: 2040-07-30
Also published as: EP4378627A2; CA3145110A1; EP3990221A4; EP3990221C0; EP3990221B1; WO2021019500A1; EP3990221A1; CN114126806A

Abstract

An advanced gripping device is disclosed that is effective in transmitting torque to a socket fastener. The invention comprises: at least one screwdriver bit body. The screwdriver bit body further comprises: a plurality of side walls, a first base surface and a second base surface. The plurality of side walls radially surround a rotation axis of the screwdriver bit body. Each sidewall further comprises: a first side edge, a second side edge, a side surface, and at least one bonding pocket. The engagement pockets create additional gripping points and thus prevent slippage between the screwdriver bit body and the socket fastener. The bonding pockets are recessed into the sides. The engagement cavity extends on the screwdriver bit body from the first base toward the second base. Combining the acupoints at a first distance from the first side edge.

Description

Advanced gripping device

Technical Field

The present invention relates to tools for loosening and tightening fasteners, such as screws and nuts, and more particularly to a non-slip multi-directional driver head that prevents the driver head from damaging the fastener or slipping off the fastener during removal or tightening of the fastener.

Background

Hexagonal bolts, nuts, screws, and other similar threaded fasteners secure a plurality of parts together by engaging complementary threads (commonly referred to as female threads). The structure of such fasteners generally comprises: a cylindrical shaft portion having external threads, and a head portion at the trailing end of the shaft portion. The external thread engages with a complementary female thread, typically formed by tapping into a hole or nut, to secure the fastener and simultaneously the associated part. The fastener is rotated or driven into the female thread by its head receiving an external torque force. The head is shaped to allow an external tool, such as a wrench, to apply torque to the fastener to rotate the fastener to engage the complementary female threads to some extent. Such fasteners are simple, inexpensive, and very effective and are therefore commonly used in modern society.

One of the common problems with the use of such fasteners is: whether the fastener is male or female, the tool often slides over the head. The reasons for this are likely to be: tool or fastener wear, tool or fastener rust, excessive fastener torquing, head damage of the fastener.

Disclosure of Invention

The present invention relates to a screwdriver head design capable of substantially eliminating sliding. The design of the present invention comprises several parts. The overall action of such portions may engage the head of the fastener, thereby effectively transferring torque between the driver bit and the fastener head. Conventional bolt drivers may use tools and bores that are not otherwise needed. The present invention avoids these problems. With the development of power screwdrivers and drills, it has become common to use power tools to apply torque to remove fasteners. The present invention provides a double-ended driver bit that can apply a torque to a fastener clockwise or counterclockwise to lock or unlock the fastener. Most driver bits have a standard one-quarter inch hex grip end and include, but are not limited to, square, hex, or star shaped drive ends.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective view of an embodiment of the present invention.

Fig. 3 is a front view of the embodiment of fig. 2.

Fig. 4 is a rear view of the embodiment of fig. 2.

Fig. 5 is a perspective view of another embodiment of the present invention.

Fig. 6 is a bottom perspective view of the present invention.

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

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

Fig. 9 is a front view of the embodiment of fig. 8.

Fig. 10 is a perspective view of a further embodiment of the present invention.

Fig. 11 is a perspective view of yet another embodiment of the present invention.

Fig. 12 is a perspective view of yet another embodiment of the present invention.

Fig. 13 is a front view showing another embodiment related to the embodiment of fig. 2, wherein the overall cross section of the binding pocket is a triangular cross section.

Fig. 14 is a front view showing another embodiment related to the embodiment of fig. 2, wherein the overall cross section of the binding pocket is a triangular cross section.

Fig. 15 is a front view showing another embodiment related to the embodiment of fig. 2, wherein the overall cross section of the binding pocket is a triangular cross section.

Fig. 16 is a front view showing another embodiment related to the embodiment of fig. 15, wherein different portions of one of the side walls are concave or convex.

Fig. 17 is a front view showing another embodiment related to the embodiment of fig. 15, wherein different portions of one of the side walls are raised or recessed.

[ Main reference numerals Specification ]

1 Screwdriver head body

2 side wall

10. Curve area

11. Straight line area

12. First cavity

13. Second acupoint

14. A first base surface

15. A second base surface

16. Rotary shaft

17. First screwdriver bit body

18. Second screwdriver bit body

19. Attachment structure body

20. Coupling hole

21. First distance

22. Second distance

23. Safety hole of lock pin

24. Intermittent sidewall

25. Side edge

26. A first substrate surface

27 vertex point

3 first side edge

32 extension part

33 first part

34 second part

4 second side edge

5 side surfaces

6 convex surface

7 concave surface

8 combining hole

9 an overall cross section of the binding pocket.

Detailed Description

First, it is specifically described that: the drawings used in the present specification are only for the purpose of illustrating certain embodiments of the invention and the scope of the invention is not limited by the drawings.

The present invention relates to a tool attachment, and more particularly to a multi-grip screwdriver bit, which is a screwdriver bit or a screw driver bit. The present invention can apply a greater torque to the fastener than other similarly sized conventional screwdriver bits without damaging the fastener head or the tool. The efficacy of the present invention is achieved by the engagement structure having a plurality of features that enable the engagement structure to effectively grip the head of the fastener. The present invention is a screwdriver bit compatible with a variety of torque tools, including: conventional electric drills, screwdrivers, socket wrenches, socket drivers that can receive a driver bit, but these torque tools are not limited to the torque tools described above.

Referring to fig. 1, a simplified embodiment of the present invention is shown. In this embodiment, the present invention at least comprises: a screwdriver bit body 1, and an attachment body 19. The screwdriver bit body 1 is a stem which can be combined with a socket fastener, for example: socket screw and socket screw to quickly apply a torque to a socket fastener. The screwdriver bit body 1 further comprises: a plurality of side walls 2, a first base 14, and a second base 15. Generally, the screwdriver bit body 1 is a prismatic body composed of a high strength metal. The plurality of side walls 2 engage the socket fastener to effectively transfer torque from the torque tool to the socket fastener. The first base surface 14 and the second base surface 15 are opposite to each other across the plurality of side walls 2, and the first base surface 14 and the second base surface 15 are perpendicular to the plurality of side walls 2, thereby forming the prismatic screwdriver bit body 1. In a preferred embodiment of the present invention, the first base surface 14 further comprises a first base surface 26, wherein the first base surface 26 is planar and perpendicular to the side surface 5 of each of the plurality of side walls 2.

The attachment body 19 allows the present invention to be attached to an external torque tool whereby torque can be applied to the socket fastener via the screwdriver bit body 1. The attachment body 19 is distributed along one rotation axis 16 of the screwdriver bit body 1, and its center is located on the rotation axis 16. Therefore, the rotation axis of the attachment body 19 overlaps with the rotation axis 16 of the screwdriver bit body 1. Further, the attachment body 19 is connected to the second base surface 15. In a preferred embodiment of the invention, the attachment body 19 has a hexagonal cross section and thus can be coupled to a female attachment component of an external torque tool. The external torque tool may be, but is not limited to: electric drills, torque wrenches, pneumatic drills, socket screwdrivers, and other similar torque tools. In an exemplary embodiment of the invention, the overall cross section 9 of the at least one bonding pocket 8 is a triangular cross section. Such a design provides a large space for the following conditions: when a torsion force is applied to release the residual stress, the material will be strained in at least one of the bonding pockets 8. Further, the one triangular cross section may be concave inwardly from the first side edge 3 to the second side edge 4. In this way, the torsion force can be captured by the at least one engagement cavity 8 when the torsion force is applied.

The triangular cross-section further includes a plurality of vertices 27, as shown in FIG. 15. The plurality of vertices 27 represent the trajectories of the triangular profile corners. Each of the vertices 27 may be a rounded corner. Such a design prevents stress from concentrating at the apex 27 and does not significantly reduce the space required to mitigate the fatigue effects.

In many cases, it may be advantageous to modify slightly into a more rigid triangle, depending on the strength of the torsional stress, and the shape of the screw or fastener. In these cases, for enhanced efficiency, one triangular cross section may have a plurality of vertices 31, and a pair of extensions 32, as shown in fig. 16 and 17. The plurality of vertices 31 represent a set of trajectories of triangular cross-section corners. The plurality of vertices 31 may be considered as two leading edge elements along the first side edge 3 and the second side edge 4, and a cavity-based element. The pocket base assembly may be a straight line connecting a pair of extensions 32. The pair of extensions 32 represent edges that connect the plurality of vertices 31 together. The pair of extensions 32 are interspersed between the plurality of vertices 31. Thus, the pair of extensions 32 connects each of the plurality of vertices 31 together. The shape of each of the pair of extensions 32 may be selected from the group consisting of: straight lines, concave lines, and convex lines. The one group of shapes may also be selected for: a plurality of vertexes 31, a pair of extensions 32; the cavity-based assembly may be a circular arc or an angle. Such a design allows the extension 32 to better accommodate stresses caused by different torsions and fatigue can cause adverse wear to the bit in use.

Other uses may require modification of the shape of the surrounding edges of the triangular profile. To this end, one side 5 comprises: a first portion 33, and a second portion 34, as shown in fig. 16 and 17. The first portion 33 and the second portion 34 are edges around the triangle cross section. The first portion 33 reaches a position along a first distance 21 close to the first side edge 3. Again, the second portion 34 reaches a position along a second distance 22 near the second side edge 4. The shape of the first portion 33 may be selected from the group of: straight lines, concave lines, and convex lines. As such, the first portion 33 may optimally correspond to potential mechanical fatigue. Likewise, the shape of the second portion 34 may be selected from the group of: straight lines, concave lines, and convex lines. As such, the second portion 34 may optimally correspond to potential mechanical fatigue. The shape of the first portion 33 and the second portion 34 may be selected to be a circular arc or an angle, as shown in fig. 16 and 17. The best choices are: the shape of the first and second portions 33, 34 has opposite curvatures, for example, one concave and the other convex, so that the cyclic stress effect is minimized. Other modifications may be applied to the first side edge 3 and the second side edge 4, which have been formed into circular arcs or angular shapes. Please refer to fig. 3 and fig. 4. Each side wall 2 further comprises: a first side edge 3, a second side edge 4, a side surface 5, and at least one bonding pocket 8. The plurality of side walls 2 radially surround a rotational axis 16 of the screwdriver bit body 1 to create a shape complementary to the socket fastener profile. The number of side walls 2 varies with the shape of the socket fastener to complement the shape of the socket fastener. In one embodiment of the invention the number of side walls 2 is 6, whereas the cross section of the resulting screwdriver bit body 1 is a hexagon. In another embodiment of the invention, the number of side walls 2 is 4.

The side 5 bears against the socket fastener, in particular against the side wall of the socket fastener head. The first side edge 3 and the second side edge 4 are opposite to each other across a side face 5. The first side edge 3 and the second side edge 4 form an edge angle of the screwdriver bit body 1 from a top view or a bottom view. The coupling pockets 8 are recessed into the side 5, thereby creating additional gripping points or gripping teeth at the side 5. The engagement recess 8 and the first side edge 3 are separated by a first distance 21. The clamping point is then created by the coupling pocket 8 and the side 5. In a further embodiment of the invention, the clamping point is created by the coupling pocket 8 and an adjacent side edge, wherein this adjacent side edge may be the first side edge 3 or the second side edge 4, in particular the side edge closest to the coupling pocket 8. The bonding pocket 8 extends on the screwdriver bit body 1 from the first base 14 toward the second base 15. Thus, the additional clamping point extends in the length direction of the screwdriver bit body 1, and the screwdriver bit body 1 and the socket fastener can have the maximum clamping combination force. In a preferred embodiment of the invention, an overall cross section 9 of the joining recess 8 is parallel to the first base surface 14 and the second base surface 15. In one embodiment of the invention, the bonding pocket 8 tapers from the first base surface 14 toward the second base surface 15, as shown in FIG. 11. This embodiment then results in: the at least one bonding pocket 8 tapers from the first base 14 toward the second base 15 such that the triangular cross-section adjacent the first base 14 is greater than the triangular cross-section adjacent the second base 15. The at least one engagement cavity 8 may be suitably shaped for the purpose and needs of the user. Please refer to fig. 3. In one embodiment of the invention, the overall cross-section 9 of the coupling pocket 8 is a part-circular cross-section; the part-circular cross-section is recessed into the screwdriver bit body 1 between the first side edge 3 and the second side edge 4. The semicircular cross section allows the screwdriver bit body 1 to have no or few high stress points, thereby increasing the overall tool life. Please refer to fig. 13 and 14. In one embodiment of the invention, the overall cross section 9 of the joining pocket 8 is a triangular cross section; the triangular cross-section is recessed into the screwdriver bit body 1 between the first side edge 3 and the second side edge 4. In other embodiments of the invention, the bonding pocket 8 may have other shaped cross-sections. Other shapes of cross-sections include, but are not limited to: half square, half rectangle, and half oval cross sections.

Please refer to fig. 8 and 9. In one embodiment of the present invention, the overall cross section 9 of the bonding pocket 8 further comprises: a curved region 10 and a straight region 11. In this embodiment, the invention is implemented as an object extraction bit, wherein the invention is designed to extract broken fasteners, broken rods, broken studs, and the like. Thereby, the bonding pocket 8 is made with a unique shape as a sharp biting tooth that bites into a corner of the socket fastener, allowing material inside the socket fastener to enter the bonding pocket 8, and resulting in superior biting capability than conventional tools. Conventional tools are simply designed to push away material. The excellent biting ability of the present invention is particularly evident in sockets where fasteners are worn or broken. Further, the curved region 10 is a part-circular curve, which is adjacent to the first side edge 3; the straight region 11 is adjacent to the curved region 10 and opposite to the first lateral edge 3. The linear region 11 guides a portion of the socket member against the mating tooth. The straight region 11 extends from the curved region 10 to the second side edge 4. In other words, the straight zone 11 starts at the curved zone 10 and ends at the second lateral edge 4.

Please refer to fig. 11. In one embodiment of the invention, the coupling pocket 8 is located in the center of the side 5. Further, the bonding pocket 8 is a second distance 22 from the second side edge 4, wherein the first length is equal to the second length, as shown in fig. 15. Such a location allows the engagement cavity 8 to engage the inner side of the socket fastener and move torsional stresses toward or away from the inner side of the socket fastener to enhance gripping and prevent wear of the fastener for maximum torque transfer efficiency and minimum slip potential. Further, such an embodiment may rotate the socket fastener in either a clockwise or counterclockwise direction.

In one embodiment of the invention, the ratio of the first distance 21, the second distance 22, and the width of the bonding pocket 8 may be varied to achieve a specific clockwise or counterclockwise design. In one embodiment, the present invention is designed as a clockwise driver bit. In this embodiment, the second distance 22 is greater than the first distance 21. The present invention designs for gripping and applying torque to socket fasteners in a clockwise direction can be achieved when the ratio of the widths of the first distance 21, the second distance 22, and the bonding pocket 8 is 1:5:4. This design is used to screw in and secure socket fasteners. In another embodiment, the present invention is designed as a counter-clockwise screwdriver bit. In this embodiment, the first distance 21 is greater than the second distance 22. The design of the present invention to clamp and apply torque to socket fasteners in a counter-clockwise direction is achieved when the ratio of the widths of the first distance 21, the second distance 22, and the bonding pocket 8 is 5:1:4. This design uses slack and removal of the socket fastener.

Please refer to fig. 5 and fig. 10. In one embodiment of the present invention, the present invention is designed as a key way/square/other polygonal driver head. More specifically, if the bit body 1 is a key-slot type bit body, the key-slot type bit body can transmit torque to the socket fastener through the plurality of protrusions. Thus, the present invention may further comprise a plurality of intermittent sidewalls 24. Each intermittent sidewall 24 is a flat surface that functions like a conventional screwdriver bit design in conjunction with a socket fastener. A plurality of intermittent sidewalls 24 radially surround the rotational axis 16. A plurality of intermittent side walls 24 are interposed between the plurality of side walls 2. The width ratio of the intermittent side walls 24 and the side walls 2 may be varied to accommodate a variety of different screwdriver bit designs. In this embodiment, the plurality of intermittent side walls 24 and the plurality of side walls 2 are alternately arranged around the rotation shaft 16. In other embodiments of the invention, three intermittent side walls 24 are present on each side wall 2. Such an arrangement allows one binding feature/binding tooth to be present on the protrusion of each screwdriver bit body 1.

In an exemplary embodiment of the present invention, a first intermittent sidewall 28, a second intermittent sidewall 29, and a third intermittent sidewall 30 of the plurality of intermittent sidewalls 24 are interposed between the associated sidewalls of the plurality of sidewalls 2, as shown in fig. 10. The first intermittent sidewall 28, the second intermittent sidewall 29, and the third intermittent sidewall 30 can be effectively connected to the fastener, but still provide sufficient space to prevent mechanical wear and fatigue. The first intermittent sidewall 28 and the second intermittent sidewall 29 are perpendicular to each other. Such a design forms a 90 degree angle that can be best used in some applications. The third intermittent sidewall 30 is located between at least one bonding pocket 8 of the associated sidewall and the second intermittent sidewall 29. Thus, in the application of the present invention, the third intermittent sidewall 30 provides mechanical support for the at least one bonding pocket 8.

Please refer to fig. 6. In one embodiment, the present invention further comprises a coupling hole 20. The coupling holes 20 allow the present invention to be attached to a male attachment feature of an external torque tool, such as a socket wrench or screwdriver. The coupling hole 20 extends into the attachment construction body 19 and is opposite to the screwdriver bit body 1. The coupling aperture 20 is shaped to receive the male attachment formation of the socket wrench. The shape of the coupling hole 20 is preferably square because most socket wrenches use a square attachment configuration. In this embodiment, the attachment formation body 19 is preferably cylindrical in shape. In other embodiments, the shape of the coupling hole 20 and the attachment configuration body 19 may vary with the design of the torque tool and the method of attachment.

Please refer to fig. 2. In one embodiment, the present invention is fabricated as a dual-ended screwdriver bit that provides both a clockwise and counter-clockwise configuration in a single tool. In this embodiment, the screwdriver bit body 1 includes: a first screwdriver bit body 17 and a second screwdriver bit body 18. The attachment formation body 19 is preferably hexagonal in cross section. The center of the attachment structure body 19 is located at the rotation axis 16 of the first screwdriver bit body 17, and is distributed along the rotation axis 16 of the first screwdriver bit body 17. Therefore, the rotation axis of the attachment structure body 19 is completely overlapped with the rotation axis 16 of the first driver bit body 17. The attachment formation body 19 is connected to the second base surface 15 of the first screwdriver bit body 17. The second head body 18 is concentric with the first head body 17 and the shared attachment structure body 19, and the second head body 18 is concentric with the first head body 17. Similar to the design of a conventional double-ended screwdriver bit, the second screwdriver bit body 18 is connected to the attachment formation body 19 and is opposite to the first screwdriver bit body 17. Like the first screwdriver bit body 17, the attachment formation body 19 is connected to the second base surface 15 of the second screwdriver bit body 18. The first screwdriver bit body 17 is used to rotate the socket fastener in a clockwise direction, that is to say the first screwdriver bit body 17 is a screwdriver bit body in a clockwise configuration. Please refer to fig. 3. The second distance 22 of the first screwdriver bit body 17 is greater than the first distance 21 of the first screwdriver bit body 17. As such, the additional gripping points of the first screwdriver bit body 17 are adjacent to the first side edge 3 of the first screwdriver bit body 17. The second bit body 18 is used to loosen or remove socket fasteners from a counter-clockwise direction, i.e., the second bit body 18 is a counter-clockwise configured bit body. Please refer to fig. 4. The first distance 21 of the second bit body 18 is greater than the second distance 22 of the second bit body 18. As such, the additional gripping points of the second bit body 18 are adjacent to the second side edge 4 of the second bit body 18.

Please refer to fig. 5. In one embodiment, the bonding pocket 8 comprises: a first pocket 12 and a second pocket 13. This embodiment is another configuration of the present invention having both clockwise and counterclockwise functionality. The first and second pockets 12, 13 are parallel to each other and are spaced apart from each other. The first pocket 12 is adjacent to the first side edge 3 and is spaced from the first side edge 3, and the second pocket 13 is adjacent to the second side edge 4 and is spaced from the second side edge 4. This embodiment allows the user to rotate the present invention clockwise or counterclockwise without removing the present invention from the torque tool and still have the advantage of additional gripping points. In this embodiment, the present invention preferably includes a plurality of intermittent sidewalls 24, wherein the plurality of intermittent sidewalls 24 are interposed between the plurality of sidewalls 2. Thus, in this embodiment, the triangular profile may be a negative number of triangular profiles arranged along the plurality of side walls 2. Such a design allows the present invention to accommodate a wide variety of high stress applications.

Please refer to fig. 7. In one embodiment, the present invention is fabricated as a screwdriver bit with spherical end points. In this embodiment, each side 5 of the plurality of side walls 2 comprises: a convex surface 6 and a concave surface 7. The convex surface 6 and the concave surface 7 form a curved surface. Thus, the screwdriver bit body 1 having a plurality of side walls 2 forms a sphere-like configuration. The convex surface 6 is adjacent to the first base surface 14; each convex surface 6 of the plurality of side walls 2 participates in forming together a sphere-like configuration. The concave surface 7 is adjacent to the convex surface 6 and opposite to the first base surface 14; each concave surface 7 of the plurality of side walls 2 participates in forming together a sphere-like configuration; the concave surface 7 may provide a suitable clearance when the screwdriver bit body 1 is engaged at an angle to a socket fastener. The convex surface 6 and the concave surface 7 are distributed along the rotation axis 16 of the screwdriver bit body 1 (i.e. along the length of the screwdriver bit body 1) such that the spheroidal configuration ends at one end of the screwdriver bit body 1. In a preferred embodiment of the present invention, the curvature, height, and length of the convex surface 6 are the same as the curvature, height, and length of the concave surface 7, respectively. In a preferred embodiment of the invention, the coupling pocket 8 extends the entire length of the convex surface 6 and the concave surface 7. Thus, no matter what the angle between the socket fastener and the screwdriver bit body 1, additional clamping points or teeth are created on the screwdriver bit body 1.

Please refer to fig. 10. In one embodiment, the present invention is manufactured as a tamper-proof screwdriver bit. In this embodiment, the present invention includes a latch safety vent 23; the latch relief aperture 23 is complementary to the shape of the latch on a unique socket fastener and is capable of interlocking with this latch. In accordance with this embodiment, a series of unique socket fasteners and unique screwdriver bits can be manufactured, used, and sold. This interlocking design is for security reasons to prevent unauthorized persons from using or operating certain socket fasteners. The latch safety hole 23 is concentrically located on the rotation shaft 16 of the screwdriver bit body 1. Further, a detent safety hole 23 extends from the first base surface 14 into the screwdriver bit body 1. The size, depth, and cross-sectional shape of the latch safety aperture 23 may be varied to suit the needs or specifications of the user.

Please refer to fig. 11. In some embodiments, the present invention further includes additional features to assist the user in guiding the screwdriver body 1 into the socket fastener. In one embodiment, the present invention further comprises a side edge 25; the material between each of the plurality of side walls 2 and the first base surface 14 is chamfered to form a skirt 25. The side edges 25 may assist the user in locking the screwdriver bit body 1 into the socket fastener. Please refer to fig. 12. In one embodiment, the present invention is manufactured as a screwdriver. In this embodiment, the screwdriver bit body 1 tapers from the second base 15 to the first base 14, similar to a conventional screwdriver. The degree of tapering may vary depending on the needs of the user.

In some embodiments, the present invention is manufactured as a sleeve that can lock or unlock screws or other similar fasteners. In these embodiments, the screwdriver bit body 1 is manufactured as a hole penetrating the shank, similar to a conventional socket design.

The invention has been described above by way of example, however it should be understood that: these examples are provided only for illustrating the present invention and are not intended to limit the scope of the present invention. Any modifications or variations that do not depart from the gist of the invention are intended to be within the scope of the invention.

Claims

1. An advanced grasping device, comprising:

at least one screwdriver bit body, and

an attachment body in which

The at least one screwdriver bit body further comprises: a plurality of side walls, a first base surface, and a second base surface;

each of the plurality of side walls further comprises: a first side edge, a second side edge, a side surface, and at least one bonding pocket;

the plurality of side walls radially encircle a rotation axis of the at least one screwdriver bit body;

the first side edge and the second side edge are opposite to each other across the side face;

the at least one engagement cavity extends on the at least one screwdriver bit body from the first base toward the second base;

the at least one combining hole and the first side edge are separated by a first distance;

the at least one combining hole and the second side edge are separated by a second distance;

an overall cross section of the at least one bonding pocket is parallel to the first base surface and the second base surface;

the attachment bodies are distributed along the rotation axis of the at least one screwdriver bit body, and the center of the attachment bodies is positioned on the rotation axis;

the attachment body is connected to the second base surface;

the one overall cross-section of the at least one bonding pocket is a triangular cross-section;

the triangular cross section includes: a plurality of vertices representing corners of the triangular cross-section, and a plurality of extensions interspersed between the plurality of vertices; and

each of the plurality of vertices is a rounded corner.

2. The advanced gripping device according to claim 1 wherein

The side face comprises: a first portion and a second portion;

the first portion being distributed along the first distance;

the second portion being distributed along the second distance;

the shape of the first portion may be selected from a group comprising: concave lines and convex lines; and

the shape of the second portion may be selected from a group comprising: concave lines, and convex lines.

3. The advanced gripping device according to claim 1 wherein

The side face comprises: a first portion and a second portion;

the first portion being distributed along the first distance;

the second portion being distributed along the second distance;

the first part is a concave line; and

the second portion is a convex line.

4. The advanced gripping device according to claim 1 wherein

The at least one screwdriver bit body further comprises: a first screwdriver bit body and a second screwdriver bit body;

the attachment bodies are distributed along the rotation axis of the first screwdriver head body, and the center of the attachment bodies is positioned on the rotation axis;

the attachment body is connected to the second base surface of the first screwdriver bit body;

the second screwdriver head body is concentric with the first screwdriver head body;

the second screwdriver bit body is adjacent to the attachment body and opposite to the first screwdriver bit body;

the attachment body is connected to the second base surface of the second screwdriver bit body;

the first distance of the first screwdriver bit body is greater than the second distance of the first screwdriver bit body; the second distance of the second screwdriver bit body is greater than the first distance of the second screwdriver bit body.

5. The advanced gripping device according to claim 1 wherein

The side further comprises: a convex surface and a concave surface;

the convex surface is adjacent to the first basal surface;

the concave surface is adjacent to the convex surface and opposite to the first basal surface;

the convex surface and the concave surface are distributed along the rotation axis of the at least one screwdriver bit body.

6. The advanced gripping device according to claim 1 wherein

The first base surface further comprises a first substrate surface;

the first substrate surface and the side surface are plane;

the first substrate surface and the side surface are perpendicular to each other.

7. The advanced gripping device of claim 1, wherein the at least one engagement cavity tapers from the first base surface toward the second base surface such that the triangular cross-section adjacent the first base surface is greater than the triangular cross-section adjacent the second base surface.

8. The advanced gripping device according to claim 1 further comprising:

a lock pin safety hole in which

The lock pin safety hole is concentrically positioned on the rotating shaft of the at least one screwdriver bit body;

the latch safety aperture extends perpendicularly from the first base surface into the at least one screwdriver bit body.

9. The advanced gripping device according to claim 1 further comprising:

a combining hole in which

The coupling hole extends into the attachment formation body along the rotation axis and is opposite to the screwdriver bit body.

10. The advanced gripping device according to claim 1 wherein

The shape of each of the plurality of extensions is selected from the group consisting of: concave lines, and convex lines.