TW202128361A - Advanced holding apparatus - Google Patents

Abstract

A screw bit body which allows for efficient torque force application onto a socket fastener. The screw bit body includes a plurality of laterally-bracing sidewalls, a first base, and a second base. The laterally-bracing sidewalls are radially distributed about a rotation axis of the screw bit body with each further including a first lateral edge, a second lateral edge, a bracing surface, and an engagement cavity. The engagement cavity creates an additional gripping point to prevent slippage in between the screw bit body and the socket fastener. The engagement cavity traverses normal and into the bracing surface. Additionally, the engagement cavity traverses into the screw bit body from the first base to the second base. The engagement cavity is specifically positioned offset from the first lateral edge by a first distance.

Description

Advanced gripping device

The present invention relates to tools for loosening and locking fasteners (such as screws and nuts), in particular to a non-slip multi-directional screwdriver head, which can prevent the screwdriver head from damaging the fastener during the process of removing or locking the fastener Or slip off the fastener.

Hexagon bolts, nuts, screws, and other similar threaded fasteners are combined with complementary threads (usually so-called female threads) to fasten multiple parts together. The structure of this type of fastener generally includes: a cylindrical shaft with external threads, and a head at the tail end of the shaft. This external thread is combined with a complementary female thread to fix the fastener and the related parts at the same time. The female thread is usually formed by tapping into a hole or nut. The fastener is rotated or driven into the female thread by receiving an external torque on its head. The shape of the head is made to allow an external tool, such as a wrench, to apply a torsion force to the fastener to rotate the fastener and to some extent join the complementary female thread. Such fasteners are simple, cheap, and very effective, so they are commonly used in modern society.

One of the common problems when using this type of fastener is that the tool often slips on the head regardless of whether the fastener is male or female. The reasons may be: wear of tools or fasteners, corrosion of tools or fasteners, excessive tightening of fasteners, and damage to the head of the fastener.

The present invention is a screwdriver head design that can substantially eliminate sliding. The design of the present invention contains several parts. The integral function of these parts can engage the head of the fastener, and thus can effectively transmit the torsion force between the screwdriver head and the head of the fastener. Traditional boltdrivers may use unnecessary tools and drill holes. The present invention avoids these problems. With the development of electric screwdrivers and electric drills, it has been common to use electric tools to apply torque to remove fasteners. The present invention provides a double-headed screwdriver head, which can apply a torsion force to a fastener in a clockwise or counterclockwise direction to lock or loosen the fastener. Most screwdrivers have a standard quarter-inch hexagonal gripping end, but also include, but are not limited to, square, hexagonal, or star-shaped drive ends.

1: Screwdriver head body

10: Curved area

11: straight area

12: The first hole

13: second hole

14: The first base surface

15: Second base surface

16: Rotation axis

17: The first screwdriver head body

18: The second screwdriver head body

19: Attached body

2: sidewall

20: Combination hole

21: first distance

22: second distance

23: Lock pin safety hole

24: Intermittent sidewall

25: side edge

26: The first substrate surface

27: Vertex

28: The first intermittent side wall

29: Second intermittent sidewall

30: Third intermittent side wall

3: the first side edge

31: Vertex

32: Extension

33: Part One

34: Part Two

4: second side edge

5: side

6: Convex

7: concave

8: Combination point

9: Overall cross section

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 still another embodiment of the present invention.

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

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

Fig. 13 is a front view showing another embodiment related to the embodiment of Fig. 2 in which the overall cross-section of the coupling cavity is a triangular cross-section.

Fig. 14 is a front view showing another embodiment related to the embodiment of Fig. 2 in which the overall cross section of the coupling cavity is a triangular cross section.

Fig. 15 is a front view showing another embodiment related to the embodiment of Fig. 2 in which the overall cross section of the coupling cavity is a triangular cross section.

Fig. 16 is a front view showing another embodiment related to the embodiment of Fig. 15 in which a different part of one side wall is concave or convex.

Fig. 17 is a front view showing another embodiment related to the embodiment of Fig. 15, in which a different part of one side wall is convex or concave.

First of all, it should be particularly noted that the drawings used in this specification are only used to illustrate certain embodiments of the present invention, and the scope of the present invention is not limited by these drawings.

The present invention relates to accessories for torque tools, in particular to a multi-clamping point screwdriver head, which is a screwdriver head or a screw drive head. Compared with other conventional screwdriver heads of similar size, the present invention can apply greater torque to the fastener without damaging the fastener head or the screwdriver tool. The effect of the present invention is achieved by the engaging structure having a plurality of features, and these features enable the engaging structure to effectively clamp the head of the fastener. The present invention is a screwdriver head, which is compatible with a variety of torque tools. These torque tools include: traditional electric drills, screwdrivers that can accommodate screwdrivers, socket wrenches, socket drivers, but these torque tools are not limited to The torque tool mentioned above.

Please refer to FIG. 1, which is the simplest embodiment of the present invention. In this embodiment, the present invention at least includes: a screwdriver head body 1 and an attachment body 19. Screwdriver head body 1 It is a handle rod that can be combined with socket fasteners, such as socket screws and socket screws, to quickly apply torque to the socket fasteners. The screwdriver head body 1 further includes: a plurality of side walls 2, a first base surface 14, and a second base surface 15. Generally speaking, the screwdriver head body 1 is a prism body made of high-strength metal. A plurality of side walls 2 are combined with the socket fastener, so as to effectively transmit the torsion force from the torsion tool to the socket fastener. The first base surface 14 and the second base surface 15 are opposed to each other via a 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 to form a prismatic screwdriver head body 1. In a preferred embodiment of the present invention, the first base surface 14 further includes a first base surface 26, wherein the first base surface 26 is a plane 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 torsion force can be applied to the socket fastener via the screwdriver head body 1. The attachment body 19 is distributed along a rotating shaft 16 of the screwdriver head body 1, and its center is located on the rotating shaft 16. Therefore, the rotation axis 16 of the attachment body 19 overlaps the rotation axis 16 of the screwdriver bit body 1. Furthermore, the attachment body 19 is connected to the second base surface 15. In a preferred embodiment of the present invention, the attachment body 19 has a hexagonal cross-section, so that it can be combined with a female attachment element of an external torsion tool. The external torque tool can be, but is not limited to, an electric drill, a torque wrench, a pneumatic drill, a socket screwdriver, and other similar torque tools. In an exemplary embodiment of the present invention, the overall cross section 9 of at least one bonding cavity 8 is a triangular cross section. Such a design provides a large space for the following situation: when a torsion force is applied to release the residual stress, the material will generate strain in at least one bonding hole 8. Moreover, this triangular cross-section can be recessed inward from the first side edge 3 to the second side edge 4. In this way, when the torsion force is applied, the torsion force can be captured by the at least one coupling hole 8.

This triangular cross-section further contains a plurality of vertices 27, as shown in Figure 15. The plural vertices 27 represent the trajectory of the corners of the triangular section. Each of the vertices 27 may be a rounded corner. Such a design can prevent stress from being concentrated at the apex 27, and will not significantly reduce the space required to alleviate the fatigue effect.

In many cases, a slight modification to a stricter triangle may be advantageous, depending on the strength of the torsional stress and the shape of the screw or fastener. In these cases, in order to enhance efficiency, a triangular cross-section may have a plurality of vertices 31 and a pair of extensions 32, as shown in FIGS. 16 and 17. The plurality of vertices 31 represent a set of trajectories of the corners of the triangular section. The plurality of vertices 31 can be regarded as two front edge elements along the first side edge 3 and the second side edge 4 and one cavity-based element. The hole-based element may be a straight line connecting the pair of extension portions 32. The pair of extensions 32 represents an edge connecting a plurality of vertices 31 together. The pair of extensions 32 are scattered between a plurality of vertices 31. Thus, the pair of extensions 32 connect each of the plurality of vertices 31 together. The shape of each of the pair of extensions 32 may be selected from the following groups: straight lines, concave lines, and convex lines. This shape group can also be selected for: a plurality of vertices 31 and a pair of extensions 32; the cavity-based element can be an arc or an angle. Such a design can make the pair of extensions 32 better adapt to the stress caused by different torsion forces, and can fatigue and cause unfavorable wear on the screwdriver head in use.

Other uses may need to modify the edge shape around the triangular section. To achieve this, a side surface 5 includes: a first part 33 and a second part 34, as shown in FIGS. 16 and 17. The first part 33 and the second part 34 are edges around the triangular cross-section. The first part 33 reaches a position close to the first side edge 3 along a first distance 21. Furthermore, the second part 34 reaches a position close to the second side edge 4 along a second distance 22. The shape of the first part 33 may be selected from the following groups: straight line, concave line, and convex line. In this way, the first part 33 can best correspond to potential mechanical fatigue. Similarly, the shape of the second portion 34 may be selected from the following groups: straight line, concave line, and convex line. In this way, the second part 34 can best correspond to potential mechanical fatigue. The shape that can be selected as the first part 33 and the second part 34 can be an arc or an angle, as shown in FIGS. 16 and 17. The best choice is that the shapes of the first part 33 and the second part 34 have opposite curvatures, for example, one is a concave line and the other is a convex line, so that the periodic stress effect can be eliminated to the greatest extent. Other modifications can also be implemented on the first side edge 3 and the second side edge 4, which have formed circular or angular side edges. Please refer to Figure 3 and Figure 4. Each side wall 2 It further includes: a first side edge 3, a second side edge 4, a side surface 5, and at least one combining hole 8. A plurality of side walls 2 radially surround a rotating shaft 16 of the screwdriver head body 1 to produce a shape complementary to the cross-section of the socket fastener. The number of side walls 2 changes with the shape of the socket fastener so as to be complementary to the shape of the socket fastener. In an embodiment of the present invention, the number of side walls 2 is 6, and the cross-section of the body 1 of the resulting screwdriver head is a hexagon. In another embodiment of the present invention, the number of side walls 2 is four.

The side surface 5 abuts against the socket fastener, especially against the side wall of the head of the socket fastener. The first side edge 3 and the second side edge 4 are opposed to each other across the side surface 5. From the top view or the bottom view, the first side edge 3 and the second side edge 4 constitute the corners of the screwdriver head body 1. The coupling cavity 8 is recessed into the side surface 5, thereby creating additional clamping points or clamping teeth on the side surface 5. The bonding hole 8 and the first side edge 3 are separated by a first distance 21. Thus, the clamping point is created by the joint hole 8 and the side surface 5. In another embodiment of the present invention, the clamping point is generated by the coupling hole 8 and the adjacent side edge, where the adjacent side edge can be the first side edge 3 or the second side edge 4, especially the closest Combine the side edge of the hole 8. The coupling cavity 8 extends from the first base surface 14 toward the second base surface 15 on the screwdriver head body 1. As a result, the additional clamping points extend in the length direction of the screwdriver head body 1, so that the screwdriver head body 1 and the socket fastener can have the greatest clamping and binding force. In a preferred embodiment of the present invention, an overall cross section 9 of the bonding cavity 8 is parallel to the first base surface 14 and the second base surface 15. In an embodiment of the present invention, the bonding cavity 8 is gradually tapered from the first base surface 14 toward the second base surface 15, as shown in FIG. 11. Therefore, in this embodiment, at least one bonding cavity 8 will gradually become thinner from the first base surface 14 to the second base surface 15, so that the triangular cross section adjacent to the first base surface 14 is larger than the triangular cross section adjacent to the second base surface 15 . The at least one binding hole 8 can be appropriately designed in shape according to the user's purpose and needs. Please refer to Figure 3. In one embodiment of the present invention, the overall cross-section 9 of the coupling hole 8 is a partial circular cross-section; this partial circular cross-section is recessed between the first side edge 3 and the second side edge 4 of the screwdriver head Body 1. The semicircular cross-section makes the screwdriver head body 1 have no high stress points, or there are only a few high stress points, thereby increasing the life of the overall tool. Please refer to Figure 13 and Figure 14. In one embodiment of the present invention, the overall cross-section 9 of the bonding cavity 8 is a triangular cross-section; this triangular cross-section is at the first side edge 3 and The screwdriver head body 1 is recessed between the second side edges 4. In other embodiments of the present invention, the coupling cavity 8 may have a cross-section with other shapes. Other shapes of cross-sections include but are not limited to: half-square, half-rectangular, and half-elliptical cross-sections.

Please refer to Figure 8 and Figure 9. In an embodiment of the present invention, the overall cross section 9 of the bonding hole 8 further includes: a curved area 10 and a straight area 11. In this embodiment, the present invention is implemented as an object removal driver head, where the present invention is designed to remove broken fasteners, broken rods, broken studs, and the like. As a result, the coupling cavity 8 is manufactured to have a unique shape as a sharp bite tooth, which can bite into the corners of the socket fastener, and allow the material inside the socket fastener to enter the coupling cavity 8, and produce relatively Excellent bite ability of traditional tools. Traditional tools are only designed to push away materials. The excellent occlusal ability of the present invention is especially obvious to the sockets of worn or damaged fasteners. Moreover, the curved area 10 is a partially circular curve, which is adjacent to the first side edge 3; the straight area 11 is adjacent to the curved area 10 and is opposite to the first side edge 3. The linear region 11 guides a part of the socket member to abut the coupling tooth. The straight area 11 extends from the curved area 10 to the second side edge 4. In other words, the straight area 11 starts from the curved area 10 and ends at the second side edge 4.

Please refer to Figure 11. In an embodiment of the present invention, the coupling hole 8 is located in the center of the side surface 5. Furthermore, the bonding hole 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 position allows the coupling hole 8 to join the inner side of the socket fastener, and move the torsion stress to or away from the inner side of the socket fastener to strengthen the gripping function, and Prevent the fasteners from wearing, and achieve the maximum torque transfer efficiency and the lowest possible slippage. Moreover, this embodiment can rotate the socket fastener in a clockwise direction or a counterclockwise direction.

In an embodiment of the present invention, the ratio of the first distance 21, the second distance 22, and the width of the binding hole 8 can be changed to achieve a dedicated clockwise or counterclockwise design. In one embodiment, the present invention is designed as a clockwise screwdriver head. In this embodiment, the second distance 22 is greater than the first distance 21. When the ratio of the first distance 21, the second distance 22, and the width of the binding hole 8 is 1:5:4, it can be It is a design invented to clamp the socket fastener in a clockwise direction and apply torsion force to the socket fastener. This design is used to screw in and fix the socket fasteners. In another embodiment, the present invention is designed as a counterclockwise screwdriver head. In this embodiment, the first distance 21 is greater than the second distance 22. When the ratio of the first distance 21, the second distance 22, and the width of the coupling cavity 8 is 5:1:4, it can achieve the invention of clamping the socket fastener in the counterclockwise direction and applying torsion force to the socket fastener. design. This design uses loosening and removal of socket fasteners.

Please refer to Figure 5 and Figure 10. In one embodiment of the present invention, the present invention is designed as a keyway/square/other polygonal screwdriver head. In more detail, if the screwdriver head body 1 is a keyway type screwdriver head body, then this keyway type screwdriver head body can transmit torsion force to the socket fastener through a plurality of protrusions. Therefore, the present invention may further include a plurality of intermittent side walls 24. Each intermittent side wall 24 is a flat surface, which combines with socket fasteners and functions like a traditional screwdriver head design. A plurality of intermittent side walls 24 radially surround the rotating shaft 16. A plurality of intermittent side walls 24 are interspersed between the plurality of side walls 2. The width ratio of the plurality of intermittent side walls 24 and the plurality of side walls 2 can be changed to adapt to various screwdriver head designs. In this embodiment, a plurality of intermittent side walls 24 and a plurality of side walls 2 are alternately distributed around the rotating shaft 16. In other embodiments of the present invention, three intermittent side walls 24 are present in each side wall 2. Such a layout allows a coupling feature/coupling tooth to exist on the protrusion of each screwdriver head body 1.

In an exemplary embodiment of the present invention, a first intermittent side wall 28, a second intermittent side wall 29, and a third intermittent side wall 30 among the plurality of intermittent side walls 24 are inserted into the plurality of side walls 2 Among the relevant side walls, as shown in Figure 10. The first intermittent side wall 28, the second intermittent side wall 29, and the third intermittent side wall 30 can be effectively connected with the fastener, but can still provide enough space to prevent mechanical wear and fatigue. The first intermittent side wall 28 and the second intermittent side wall 29 are perpendicular to each other. This design forms a 90 degree angle, which can have the best effect in certain applications. The third intermittent side wall 30 is located between at least one combination cavity 8 of the relevant side wall and the second intermittent side wall 29 The three intermittent side walls 30 are located between the at least one combination cavity 8 of the related side wall and the second intermittent side wall 29. In this way, in the application of the present invention, the third intermittent side wall 30 provides mechanical support for at least one bonding cavity 8.

Please refer to Figure 6. In one embodiment, the present invention further includes a coupling hole 20. The coupling hole 20 allows the present invention to be attached to a male attachment structure of an external torque tool, such as a socket wrench or a screwdriver. The coupling hole 20 extends into the attachment structure body 19 and is opposite to the screwdriver head body 1. The shape of the coupling hole 20 can accept the male attachment structure of the sleeve wrench. The shape of the coupling hole 20 is preferably a square because most socket wrenches use a square attachment structure. In this embodiment, the shape of the attachment structure body 19 is preferably cylindrical. In other embodiments, the shape of the coupling hole 20 and the attachment structure body 19 may be changed according to the design of the torsion tool and the method of attachment.

Please refer to Figure 2. In one embodiment, the present invention is manufactured as a double-ended screwdriver head that can provide both clockwise and counterclockwise configurations in a single tool. In this embodiment, the screwdriver head body 1 includes a first screwdriver head body 17 and a second screwdriver head body 18. The section of the attachment structure body 19 is preferably hexagonal. The center of the attachment structure body 19 is located on the rotation axis 16 of the first screwdriver head body 17 and is distributed along the rotation axis 16 of the first screwdriver head body 17. Therefore, the rotation axis 16 of the attachment structure body 19 and the rotation axis 16 of the first screwdriver bit body 17 completely overlap. The attachment structure body 19 is connected to the second base surface 15 of the first screwdriver head body 17. The second screwdriver head body 18 shares the attachment structure body 19 with the first screwdriver head body 17, and the second screwdriver head body 18 is concentric with the first screwdriver head body 17. Similar to the design of the traditional double-head screwdriver head, the second screwdriver head body 18 is connected to the attachment structure body 19 and is opposite to the first screwdriver head body 17. Similar to the first screwdriver head body 17, the attachment structure body 19 is connected to the second base 15 of the second screwdriver head body 18. The first screwdriver head body 17 is used to rotate the socket fastener in a clockwise direction, that is, the first screwdriver head body 17 is a screwdriver head body configured in a clockwise direction. Please refer to Figure 3. The second distance 22 of the first screwdriver head body 17 is greater than the first distance 21 of the first screwdriver head body 17. In this way, the additional clamping point of the first screwdriver head body 17 is adjacent to the first side edge 3 of the first screwdriver head body 17. second The screwdriver head body 18 is used to loosen or remove the socket fastener from a counterclockwise direction, that is to say, the second screwdriver head body 18 is a screwdriver head body with a counterclockwise configuration. Please refer to Figure 4. The first distance 21 of the second screwdriver head body 18 is greater than the second distance 22 of the second screwdriver head body 18. In this way, the additional clamping point of the second screwdriver head body 18 is adjacent to the second side edge 4 of the second screwdriver head body 18.

Please refer to Figure 5. In one embodiment, the binding hole 8 includes: a first hole 12 and a second hole 13. This embodiment is another configuration of the present invention, which has both clockwise and counterclockwise functions. The first cavity 12 and the second cavity 13 are parallel to each other and separated from each other. The first cavity 12 is adjacent to the first side edge 3 and separated from the first side edge 3, and the second cavity 13 is adjacent to the second side edge 4 and separated from the second side edge 4. This embodiment allows the user to rotate the present invention clockwise or counterclockwise without removing the self-torque tool of the present invention, and still has the advantage of additional clamping points. In this embodiment, the present invention preferably includes a plurality of intermittent sidewalls 24, wherein the plurality of intermittent sidewalls 24 are interspersed between the plurality of sidewalls 2. Therefore, in this embodiment, the triangular cross-section may be a negative number of triangular cross-sections arranged along the plurality of side walls 2. Such a design allows the present invention to adapt to various high-stress applications.

Please refer to Figure 7. In one embodiment, the present invention is manufactured as a screwdriver head with spherical ends. In this embodiment, each side surface 5 of the plurality of side walls 2 includes: 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 head body 1 having a plurality of side walls 2 forms a spherical-like structure. 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 jointly forming a spherical-like structure. 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 a spherical-like structure; when the screwdriver head body 1 is connected to the socket fastener at an angle, the concave surface 7 can provide proper clearance. The convex surface 6 and the concave surface 7 are distributed along the rotation axis 16 of the screwdriver head body 1 (that is, distributed along the length of the screwdriver head body 1 ), so that the spherical structure ends at one end of the screwdriver head 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 present invention, the coupling hole 8 extends over the entire length of the convex surface 6 and the concave surface 7. then, Regardless of the angle between the socket fastener and the screwdriver head body 1, additional clamping points or clamping teeth will be generated on the screwdriver head body 1.

Please refer to Figure 10. In one embodiment, the present invention is manufactured as a tamper-proof screwdriver head. In this embodiment, the present invention includes a lock pin safety hole 23; the lock pin safety hole 23 is complementary to the shape of the pin on a unique socket fastener, and can be interlocked with the pin. According to this embodiment, a series of unique socket fasteners and unique screwdriver heads can be manufactured, used, and sold. This interlocking design is for safety reasons and can prevent unauthorized people from using or operating certain socket fasteners. The lock pin safety hole 23 is concentrically located on the rotating shaft 16 of the screwdriver head body 1. Furthermore, the lock pin safety hole 23 extends from the first base surface 14 into the screwdriver head body 1. The size, depth, and cross-sectional shape of the lock pin safety hole 23 can be changed to meet the needs or specifications of the user.

Please refer to Figure 11. In some embodiments, the present invention further includes some additional features to help the user guide the screwdriver body 1 into the socket fastener. In one embodiment, the present invention further includes 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 the side edge 25. The side edge 25 can help the user to lock the screwdriver head body 1 into the socket fastener. Please refer to Figure 12. In one embodiment, the invention is manufactured as a screwdriver. In this embodiment, the screwdriver head body 1 tapers from the second base surface 15 to the first base surface 14, similar to a conventional screwdriver. The degree of taper can be changed according to the needs of the user.

In some embodiments, the present invention is manufactured as a sleeve that can lock or loosen screws or other similar fasteners. In these embodiments, the screwdriver head body 1 is manufactured as a hole that penetrates the rod body, similar to a traditional sleeve design.

The present invention has been described above with examples. However, it should be understood that without departing from the spirit of the present invention or the scope of the application, modifications or changes made to these embodiments are still included in the scope of the present invention.

1: Screwdriver head body

14: The first base surface

15: Second base surface

16: Rotation axis

19: Attached body

2: sidewall

26: The first substrate surface

3: the first side edge

4: second side edge

5: side

8: Combination point

Claims (18)

An advanced grasping device, which includes: At least one screwdriver head body, and An attached body, in which The at least one screwdriver head body further includes: a plurality of side walls, a first base surface, and a second base surface; Each of the plurality of side walls further includes: a first side edge, a second side edge, a side surface, and at least one combining hole; The plurality of side walls radially surround a rotation axis of the at least one screwdriver head body; The first side edge and the second side edge are opposite to each other across the side surface; The at least one combining hole is vertically recessed into the side surface; The at least one coupling hole extends from the first base surface toward the second base surface on the at least one screwdriver head body; The at least one binding hole and the first side edge are separated by a first distance; The at least one binding hole and the second side edge are separated by a second distance; An overall cross section of the at least one bonding cavity is parallel to the first base surface and the second base surface; The attachment body is distributed along the rotation axis of the at least one screwdriver head body, and the center of the attachment body is located on the rotation axis; The attachment body is connected to the second base surface; The overall cross section of the at least one bonding cavity is a triangular cross section; The triangular cross-section is recessed inwardly from the first side edge to the second side edge. The advanced gripping device as described in item 1 of the scope of patent application, where The triangular section includes a plurality of vertices; Each of the plural vertices is a rounded corner. The advanced gripping device as described in item 1 of the scope of patent application, where The triangular section includes: a plurality of vertices and a pair of extensions; The shape of each of the pair of extensions is selected from the following group: straight line, concave line, and convex line. The advanced gripping device as described in item 1 of the scope of patent application, where The side surface includes: a first part and a second part; The first part is distributed along the first distance; The second part is distributed along the second distance; The shape of the first part can be selected from a group including: straight lines, concave lines, and convex lines; The shape of the second part can be selected from a group including: straight lines, concave lines, and convex lines. In the advanced gripping device described in item 1 of the scope of patent application, the first distance is equal to the second distance. In the advanced gripping device described in item 1 of the scope of patent application, the second distance is greater than the first distance. The advanced gripping device described in item 1 of the scope of patent application, wherein the first distance is greater than the second distance. The advanced gripping device as described in item 1 of the scope of patent application, where The at least one screwdriver head body further includes: a first screwdriver head body and a second screwdriver head body; The attachment body is distributed along the rotation axis of the first screwdriver head body, and the center of the attachment body is located on the rotation axis; The attachment body is connected to the second base surface of the first screwdriver head body; The second screwdriver head body is concentric with the first screwdriver head body; The second screwdriver head body is adjacent to the attachment body and opposite to the first screwdriver head body; The attachment body is connected to the second base surface of the second screwdriver head body; The first distance of the first screwdriver head body is greater than the second distance of the first screwdriver head body; The second distance of the second screwdriver head body is greater than the first distance of the second screwdriver head body. The advanced gripping device as described in item 1 of the scope of patent application, where The side surface further includes: a convex surface and a concave surface; The convex surface is adjacent to the first base surface; The concave surface is adjacent to the convex surface and opposite to the first base surface; The convex surface and the concave surface are distributed along the rotation axis of the at least one screwdriver head body. The advanced gripping device as described in item 1 of the scope of patent application, where The at least one screwdriver body further includes a plurality of intermittent side walls; The plurality of intermittent side walls radially surround the rotation shaft; The plurality of intermittent side walls are interspersed between the plurality of side walls. The advanced gripping device as described in item 10 of the scope of patent application, in which A first intermittent side wall, a second intermittent side wall, and a third intermittent side wall among the plurality of intermittent side walls are interspersed between a related side wall among the plurality of side walls; The first intermittent side wall and the second intermittent side wall are perpendicular to each other; The third intermittent side wall is located between the at least one coupling hole of the related side wall and the second intermittent side wall. The advanced gripping device described in the first item of the scope of patent application, wherein a side edge between each of the plurality of side walls and the first base surface is chamfered. According to the advanced gripping device described in item 1 of the scope of patent application, the body of the at least one screwdriver head tapers from the second base surface to the first base surface. The advanced gripping device as described in item 1 of the scope of patent application, where The first base surface further includes a first base surface; The surface of the first substrate and the side surface are flat; The surface of the first substrate and the side surface are perpendicular to each other. The advanced gripping device described in item 1 of the scope of patent application, wherein the at least one bonding hole is gradually tapered from the first base surface to the second base surface, so that the triangular cross section adjacent to the first base surface is larger than The triangular cross-section adjacent to the second base surface. The advanced gripping device described in item 1 of the scope of patent application further includes: A lock pin safety hole, in which The lock pin safety hole is concentrically located on the rotating shaft of the at least one screwdriver head body; The lock pin safety hole extends vertically from the first base surface into the at least one screwdriver head body. The advanced gripping device described in item 1 of the scope of patent application further includes: A bonding hole in which The coupling hole extends along the rotation axis into the attachment structure body and is opposite to the screwdriver head body. The advanced gripping device as described in item 1 of the scope of patent application, where The at least one binding point further includes: a first point and a second point; The first hole and the second hole are parallel to each other and separated from each other; The first hole is adjacent to the first side edge; The second hole is adjacent to the second side edge.

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