CN116079638A - Telescopic filling type screwdriver structure and multifunctional screwdriver - Google Patents

Abstract

The invention provides a telescopic filling type screwdriver structure and a multifunctional screwdriver, and relates to the technical field of screwdrivers, wherein the telescopic filling type screwdriver structure comprises a filling column assembly and a telescopic adjusting mechanism, the filling column assembly comprises a plurality of unit filling columns, each unit filling column comprises a mounting section and an elastic telescopic executing section which are sequentially connected, each mounting section is connected with the telescopic adjusting mechanism, and the telescopic adjusting mechanism can drive all the unit filling columns to synchronously move so as to insert and fill the corresponding elastic telescopic executing sections into grooves of screw heads of bolts to be disassembled; the multifunctional screwdriver comprises a cutter bar and the telescopic filling type screwdriver structure, the telescopic adjusting mechanism is arranged on the cutter bar, and the mounting section is movably inserted into the cutter bar along the head of the cutter bar; when the screw bolt assembling and disassembling tool bit is actually used, the tool bit matched with the screw bolt assembling and disassembling tool bit can be formed in a telescopic filling mode according to different types of screw bolts, excessive screw drivers or tool bits do not need to be carried, the application range is wide, and the screw bolt assembling and disassembling tool bit assembling are convenient and rapid to assemble.

Description

Telescopic filling type screwdriver structure and multifunctional screwdriver

Technical Field

The invention relates to the technical field of screwdrivers, in particular to a telescopic filling type screwdriver structure and a multifunctional screwdriver.

Background

The screwdriver is a common tool used for screwing the screwdriver to enable the screwdriver to be installed in place or detached, is widely used in the prior life, is various in types, comprises a straight screwdriver, a cross screwdriver, an inner hexagonal screwdriver, a triangular screwdriver, a plum blossom screwdriver and the like according to different tool bits, is divided into a plurality of different specifications according to different sizes, is often required to carry a plurality of screwdrivers in the actual use process, selects the corresponding screwdriver to disassemble and assemble according to the type of a specific bolt groove, is troublesome to carry and select when the traditional screwdriver is used, brings inconvenience to the use, and is required to carry one screwdriver body and a plurality of tool bits when disassembling and assembling according to the different tool bits.

Disclosure of Invention

The invention aims to provide a telescopic filling type screwdriver structure and a multifunctional screwdriver, which are used for solving the technical problems that the existing screwdriver in the prior art can only be adapted to bolts corresponding to a screwdriver head, has a narrow application range and affects use; the preferred technical scheme of the technical schemes provided by the invention has a plurality of technical effects; details are set forth below.

In order to achieve the above purpose, the present invention provides the following technical solutions:

the invention provides a telescopic filling type screwdriver structure, which comprises a filling column assembly and a telescopic adjusting mechanism, wherein the filling column assembly comprises a plurality of unit filling columns, and the telescopic filling type screwdriver structure comprises the following components: the unit filling column comprises a mounting section and an elastic telescopic execution section which are sequentially connected, the mounting section is connected with the telescopic adjusting mechanism, and the telescopic adjusting mechanism can drive all the unit filling columns to synchronously move so as to insert and fill the corresponding elastic telescopic execution section into a groove of a bolt head to be disassembled and assembled.

Preferably, the telescopic adjustment mechanism comprises a coarse adjustment mechanism and a fine adjustment mechanism, the coarse adjustment mechanism is connected with the mounting section, and the fine adjustment mechanism is connected with the mounting section.

Preferably, the coarse adjustment mechanism comprises a coarse adjustment screw plate and a coarse adjustment screw, wherein: the coarse adjustment screw disc is in threaded fit with the coarse adjustment screw bolt; the installation section is installed and arranged on the coarse adjustment screw bolt, and the coarse adjustment screw plate is rotated, so that the coarse adjustment screw bolt drives the installation section to axially move.

Preferably, the fine adjustment mechanism comprises a fine adjustment screw disc and a fine adjustment screw, wherein: the fine adjustment screw disc is in threaded fit with the fine adjustment screw bolt; the mounting section is arranged on the fine adjustment screw bolt, and the fine adjustment screw plate is rotated, so that the fine adjustment screw bolt drives the mounting section to axially move.

Preferably, the telescopic adjusting mechanism comprises a limiting fixed disc, a plurality of limiting holes are densely distributed on the limiting fixed disc, and the unit filling column slides through the limiting holes.

Preferably, the mounting section is provided as a mounting bar, and the elastically telescopic actuating section comprises a first elastic member and an actuating bar, wherein: the end face of one end of the installation rod is provided with a guide groove along the axial direction, one end of the execution rod is inserted in the guide groove in a sliding mode, the first elastic piece is arranged in the guide groove, and two ends of the first elastic piece are connected with the installation rod and the execution rod respectively.

The invention provides a multifunctional screwdriver, which comprises a screwdriver rod and any telescopic filling type screwdriver structure, wherein: the telescopic adjusting mechanism is arranged on the cutter bar; the mounting section is movably inserted into the cutter bar along the head of the cutter bar.

Preferably, the multifunctional screwdriver comprises a magnetic attraction mechanism, the magnetic attraction mechanism is arranged in the cutter bar, and the magnetic attraction mechanism can adsorb the bolt to be dismounted through the unit filling column.

Preferably, the magnetic attraction mechanism comprises a piezoelectric ring, and the piezoelectric ring is made of piezoelectric materials; the unit filling column is arranged as a silicon steel column.

Preferably, the multifunctional screwdriver comprises a button and a second elastic member, wherein: the button is arranged at the tail part of the cutter bar, the second elastic piece is arranged in the cutter bar, and two ends of the second elastic piece are respectively abutted with the abutting end of the button and the piezoelectric ring.

The telescopic filling type screwdriver structure and the multifunctional screwdriver provided by the invention have the following beneficial effects:

the telescopic filling type screwdriver structure comprises a filling column assembly and a telescopic adjusting mechanism, wherein the end part of the filling column assembly forms a tool bit of the screwdriver, and the telescopic adjusting mechanism enables the filling column assembly to realize telescopic operation.

The filling column assembly comprises a plurality of unit filling columns, each unit filling column comprises a mounting section and an elastic telescopic execution section, the mounting sections are connected with the telescopic adjusting mechanism, when the bolt to be disassembled is disassembled or assembled, the telescopic adjusting mechanism drives all the unit filling columns to extend out and prop against the screw heads of the bolt to be disassembled, the elastic telescopic execution sections of the unit filling columns corresponding to the screw head grooves are inserted into the screw head grooves, the elastic telescopic execution sections of the rest unit filling columns prop against the screw head end surfaces, at the moment, the elastic telescopic execution sections of the filling column assembly can form tool heads matched with the bolt to be disassembled, the telescopic adjusting mechanism is applicable to bolts with different grooves, and the telescopic filling column assembly is wide in application range and convenient to use.

The multifunctional screwdriver comprises a screwdriver rod and a telescopic filling type screwdriver structure, the telescopic adjusting mechanism is arranged on the screwdriver rod, the mounting section is movably inserted into the screwdriver rod along the head of the screwdriver rod, the screwdriver rod is used for mounting the telescopic filling type screwdriver structure on one hand, and is used for holding by a hand, the screwdriver heads of different structures can be formed through the telescopic filling type screwdriver structure, and bolts of any shape can be directly removed no matter what the grooves are, so that the multifunctional screwdriver is convenient to use.

According to the invention, the filling column assembly can realize expansion and contraction through the expansion and contraction adjusting mechanism, the unit filling columns with the elastic expansion and contraction executing sections can be adapted to bolts with different grooves, the expansion and contraction adjusting mechanism and the filling column assembly are mutually matched, and in the actual use process, the screwdriver bit which is adapted to the bolts to be disassembled and assembled is formed in an expansion and contraction filling mode, so that excessive screwdrivers or bits do not need to be carried, the application range is wide, and the use is convenient.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a multifunctional screwdriver and a bolt to be disassembled;

FIG. 2 is a schematic view of the structure of the multifunctional screwdriver of the present invention;

FIG. 3 is a structural view of the cell packing column of the present invention;

FIG. 4 is a schematic view of the structure of a partial actuator rod in the groove of the head of the in-line bolt of the present invention;

FIG. 5 is a schematic view of the structure of a partial actuator rod in the groove of the head of the cross bolt of the present invention;

FIG. 6 is a schematic top view of a coarse tuning stud of the present invention;

FIG. 7 is a schematic top view of a fine tuning stud of the present invention;

FIG. 8 is a schematic top view of a spacing fixture of the present invention;

FIG. 9 is an enlarged view of section B of the present invention;

FIG. 10 is an enlarged view of the portion A of the present invention;

FIG. 11 is a schematic diagram of a multifunctional screwdriver without a magnetic attraction mechanism;

fig. 12 is a schematic view of the construction of the multifunction screwdriver without coarse adjustment mechanism and without fine adjustment mechanism of the present invention.

Reference numerals

1. A packed column assembly; 11. a cell packed column; 111. a mounting section; 1111. a mounting rod; 1112. a guide groove; 112. an elastic expansion execution section; 1121. an actuator lever; 1122. a first elastic member; 2. a telescopic adjusting mechanism; 21. a coarse adjustment mechanism; 211. coarse adjusting the stud; 2111. a first threaded hole; 212. a coarse adjustment screw plate; 22. a fine adjustment mechanism; 221. finely adjusting a stud; 2211. a second threaded hole; 222. finely adjusting a screw disc; 23. a limit fixed disc; 231. a limiting hole; 3. a cutter bar; 4. a magnetic attraction mechanism; 5. a button; 6. a second elastic member; 7. and (5) disassembling and assembling the bolt.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.

Example 1:

the invention provides a telescopic filling type screwdriver structure, which is shown by referring to fig. 1-3, and comprises a filling column assembly 1 and a telescopic adjusting mechanism 2, wherein the filling column assembly 1 comprises a plurality of unit filling columns 11.

The unit filling column 11 comprises a mounting section 111 and an elastic telescopic execution section 112 which are sequentially connected, the mounting section 111 is connected with the telescopic adjusting mechanism 2, the telescopic adjusting mechanism 2 can drive all the unit filling columns 11 to synchronously move, the elastic telescopic execution section 112 can shrink when being pressed, and the elastic telescopic execution section 112 can recover to an initial position after being released.

When the bolt 7 to be disassembled and assembled is disassembled or assembled, all the unit filling columns 11 are driven to synchronously extend through the telescopic adjusting mechanism 2 until the elastic telescopic actuating section 112 is propped against the screw head of the bolt 7 to be disassembled and assembled, at the moment, part of the elastic telescopic actuating section 112 is inserted into the groove filled in the screw head, the other part of the elastic telescopic actuating section 112 is propped against the end face of the screw head to form a tool bit matched with the bolt 7 to be disassembled and assembled, and then the filling column assembly 1 rotates to drive the bolt 7 to be disassembled and assembled to rotate, so that the bolt 7 to be disassembled and assembled to be assembled.

Taking fig. 4 as an example, when the bolt 7 to be disassembled is a straight bolt, the screw head groove is a straight groove, and the elastic expansion execution section 112 of the filling column assembly 1 forms a straight tool bit.

Taking fig. 5 as an example, when the bolt 7 to be disassembled is a cross bolt, the screw head groove is a cross groove, and the elastic expansion and contraction executing section 112 of the filling column assembly 1 forms a cross tool bit.

Similarly, the packing column assembly 1 may also be formed with a hexagonal cutter head, a triangular cutter head, a special cutter head, etc. according to the type of the bolt 7 to be disassembled, and is adapted to various grooves of the bolt 7 to be disassembled.

According to the invention, the telescopic adjusting mechanism 2 is matched with the plurality of unit filling columns 11 with the elastic telescopic actuating sections 112, when in actual use, the cutter heads matched with the telescopic actuating sections can be formed in a telescopic filling mode according to different types of bolts, excessive screwdrivers or cutter heads do not need to be carried, the application range is wide, and the bolt dismounting operation is convenient.

Example 2

Example 2 is based on example 1:

referring to fig. 1 and 2, telescoping adjustment mechanism 2 includes a coarse adjustment mechanism 21 and a fine adjustment mechanism 22, coarse adjustment mechanism 21 being coupled to mounting section 111 for coarse adjustment of the movement of cell column 11.

The fine adjustment mechanism 22 is connected to the mounting section 111 for fine adjustment of the movement of the cell filling column 11.

The rough adjusting mechanism 21 and the fine adjusting mechanism 22 are matched with each other, so that the unit filling column 11 is firmly pressed against the screw head of the bolt 7 to be disassembled and assembled, and the formed tool bit state is stable, thereby effectively ensuring the disassembly and assembly effect of the bolt.

As an alternative embodiment, and referring to fig. 2 and 6, coarse adjustment mechanism 21 includes a coarse adjustment screw 212 and a coarse adjustment screw 211.

The mounting section 111 is mounted on the coarse adjustment stud 211, the unit filling column 11 and the coarse adjustment stud 211 move synchronously, a first threaded hole 2111 is formed in the end face of the coarse adjustment stud 211 in a penetrating mode along the axial direction, external threads matched with the first threaded hole 2111 are formed in the outer wall of the mounting section 111, and the mounting section 111 is mounted in the first threaded hole 2111 in a threaded mode.

The rough adjusting screw plate 212 is in threaded fit with the rough adjusting stud 211, and the telescopic adjusting mechanism 2 is further provided with a limiting mechanism for limiting the rotation of the rough adjusting stud 211, and in the course of rough adjusting, the rough adjusting screw plate 212 is rotated, and the rough adjusting stud 211 and the unit filling column 11 synchronously move axially.

The rough adjustment mechanism 21 adopts a screw structure, so that the unit filling column 11 can be stretched and contracted, and the self-locking effect can be realized.

As an alternative embodiment, referring to fig. 2 and 7, fine adjustment mechanism 22 includes fine adjustment screw plate 222 and fine adjustment screw 221.

The mounting section 111 is arranged on the fine adjustment stud 221, the unit filling column 11 and the fine adjustment stud 221 synchronously move, a second threaded hole 2211 is formed in the end face of the fine adjustment stud 221 in a penetrating mode along the axial direction, external threads matched with the second threaded hole 2211 in a threaded mode are formed in the outer wall of the mounting section 111, and the mounting section 111 is installed in the second threaded hole 2211 in a threaded mode.

The fine adjustment screw plate 222 is in threaded connection with the fine adjustment stud 221, the telescopic adjustment mechanism 2 is further provided with a limiting mechanism for limiting rotation of the fine adjustment stud 221, and in the fine adjustment process, the fine adjustment screw plate 222 is rotated, and the fine adjustment stud 221 and the unit filling column 11 synchronously move axially.

The pitch of fine tuning screw 222 and fine tuning stud 221 is smaller than the pitch of coarse tuning screw 212 and coarse tuning stud 211.

The coarse adjustment mechanism 21 and the fine adjustment mechanism 22 with screw structures are adopted, the coarse adjustment and the fine adjustment are combined, and the telescopic adjustment effect of the unit packing column 11 is remarkable.

As an alternative embodiment, referring to fig. 2 and 8, the telescopic adjustment mechanism 2 includes a limit fixing plate 23, and the limit fixing plate 23 is a limit mechanism for limiting rotation of the coarse adjustment stud 211 and the fine adjustment stud 221.

The limiting fixing plate 23 is densely provided with a plurality of limiting holes 231, the first threaded holes 2111 and the second threaded holes 2211 are in one-to-one correspondence, and the unit filling columns 11 slide through the limiting holes 231.

The spacing fixed disk 23 is used for the fixed of unit filling post 11 on the one hand, on the basis of guaranteeing not influencing the slip effect of unit filling post 11, makes its fixed knot construct more firm, and on the other hand can effectively avoid coarse adjustment double-screw bolt 211 and fine adjustment double-screw bolt 221 to rotate to guarantee the flexible regulation effect of unit filling post 11.

As an alternative embodiment, as shown in fig. 3 and 9, the mounting section 111 is provided as a mounting lever 1111, and the elastically telescopic actuating section 112 includes a first elastic member 1122 and an actuating lever 1121.

A guide groove 1112 is formed in an end surface of one end of the mounting rod 1111 in the axial direction, the actuator rod 1121 is size-fitted to the guide groove 1112, and one end of the actuator rod 1121 is slidably inserted into the guide groove 1112.

The first elastic member 1122 is provided as a spring, and the first elastic member 1122 is positioned in the guide groove 1112, and both ends of the first elastic member 1122 are connected to the mounting lever 1111 and the actuating lever 1121, respectively.

So set up, on the one hand installation pole 1111 has spacing effect to actuating lever 1121, and not only actuating lever 1121 stretches out and draws back more steadily, and unit filling post 11 can not take place crookedly when the dismouting bolt moreover, and the dismouting effect is showing, and on the other hand first elastic component 1122 exerts the abutment force to actuating lever 1121, not only can form multiple type tool bit when waiting to dismantle bolt 7 to support to press, and actuating lever 1121 can automatic the recovery to initial position when not using moreover.

Example 3:

example 3 is based on example 2:

the invention provides a multifunctional screwdriver, which is shown in fig. 11, and comprises a screwdriver rod 3 and a telescopic filling type screwdriver structure.

The telescopic adjusting mechanism 2 is arranged on the cutter bar 3, wherein an installation cavity is arranged in the cutter bar 3, and a first installation groove and a second installation groove are formed in the cutter bar 3 and communicated with the installation cavity.

A coarse adjustment screw 212 is rotatably mounted to the first mounting groove and a coarse adjustment screw 211 is disposed within the mounting cavity.

A fine adjustment screw 222 is rotatably mounted to the second mounting groove, and a fine adjustment screw 221 is disposed in the mounting cavity.

A mounting section 111 is movably inserted in said mounting cavity along the head of the cutter bar 3.

According to the embodiment, in the practical use process, according to the specific type of the bolt 7 to be dismounted, the telescopic filling type screwdriver structure can form a tool bit matched with the telescopic filling type screwdriver structure, and meanwhile, rough adjustment and fine adjustment are combined, so that the tool bit is more stable in shape.

Example 4

Example 4 differs from example 3 in that:

as shown in fig. 1-10, the multifunctional screwdriver comprises a magnetic attraction mechanism 4, the magnetic attraction mechanism 4 is arranged in a cutter bar 3, and in the actual bolt dismounting process, the magnetic attraction mechanism 4 can adsorb the bolt 7 to be dismounted through a unit filling column 11, so that the bolt dismounting effect is improved.

As an alternative embodiment, as shown in fig. 10, the magnetic attraction mechanism 4 includes a piezoelectric ring made of a piezoelectric material, which is provided as a piezoelectric ceramic PZT (lead zirconate titanate).

The cell filling column 11 is formed of a silicon steel column, and the mounting rod 1111 and the actuating rod 1121 are made of silicon steel.

The end of the mounting rod 1111 remote from the actuating rod 1121 passes through the piezoelectric ring.

When the piezoelectric ring is pressed, the piezoelectric ring generates electric characteristics, and the through hole of the piezoelectric ring generates magnetism and acts on the silicon steel column so as to act on the bolt 7 to be disassembled.

So set up, when in actual use, the user can be according to the actual demand whether through exerting pressure, realizes opening and closing of magnetism, convenient to use.

As an alternative embodiment, as shown in fig. 10, the multifunctional screw driver includes a button 5 and a second elastic member 6, the button 5 adopts a conventional structure, and the second elastic member 6 is provided as a spring.

The button 5 sets up the afterbody at cutter arbor 3, and second elastic component 6 sets up in cutter arbor 3, and the both ends of second elastic component 6 respectively with the butt end of button 5 with the piezoelectric ring butt.

When the telescopic adjusting mechanism 2 is used, after the telescopic adjusting mechanism 2 completes the adjustment of the filling column assembly 1, the elastic telescopic actuating section 112 of the filling column assembly 1 forms a tool bit matched with the bolt 7 to be disassembled, the pressing end of the button 5 is pressed, the pressing end of the button 5 pushes the second elastic piece 6, the second elastic piece 6 compresses the piezoelectric ring, the piezoelectric ring generates potential difference so as to generate voltage, the filling column assembly 1 generates magnetism under the action of surrounding voltage, and the formed tool bit is matched to complete the adsorption disassembly or installation of the bolt 7 to be disassembled.

If a scene is encountered where no magnetism is required, the button 5 can be released and the force of the second elastic member 6 is removed and the magnetism subsides.

Example 5

Example 5 differs from example 4 in that:

as shown in fig. 12, the telescopic adjustment mechanism 2 is not provided with the rough adjustment mechanism 21 and the fine adjustment mechanism 22, the telescopic adjustment mechanism 2 is provided with a spring, the spring is positioned on the inner side of the second elastic member 6, one end of the spring is connected with the pressing end of the button 5, the other end of the spring is connected with the packing column assembly 1 through the pressing piece, and optionally, the pressing piece and the packing column 11 of the unit can be connected in a threaded manner.

When the pressing end of the button 5 is pressed, on one hand, the second elastic piece 6 compresses the piezoelectric ring to generate magnetism, and on the other hand, the spring pushes the filling column assembly 1 to stretch out, under the action of the bolt 7 to be disassembled and assembled, and the elastic expansion executing section 112 of the filling column assembly 1 forms a tool bit matched with the bolt 7 to be disassembled and assembled.

This embodiment is simple in structure and is equally applicable to a plurality of different types of bolts 7 to be disassembled.

Alternatively, a button 5 with a self-locking function may be provided, and the relative position of the packing column assembly 1 is indirectly defined by defining the extending position of the button 5, so that the shape of the cutter head is more stable, and similarly, a structure may be provided in which the relative position of the pressing member is defined, and thus the relative position of the packing column assembly 1 is defined, or a structure may be provided in which the relative position of the packing column assembly 1 is directly defined.

In the description of the present application, it should be understood that the terms "upper," "lower," "inner," "outer," "top," "bottom," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "a plurality", "a number" or "a plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a flexible filling formula screwdriver structure which characterized in that, includes filling column subassembly and flexible adjustment mechanism, filling column subassembly includes a plurality of unit filling columns, wherein:

the unit filling column comprises a mounting section and an elastic telescopic execution section which are sequentially connected, the mounting section is connected with the telescopic adjusting mechanism, and the telescopic adjusting mechanism can drive all the unit filling columns to synchronously move so as to insert and fill the corresponding elastic telescopic execution section into a groove of a bolt head to be disassembled and assembled.

2. The telescopic filling screwdriver structure of claim 1, wherein the telescopic adjustment mechanism comprises a coarse adjustment mechanism and a fine adjustment mechanism, the coarse adjustment mechanism being coupled to the mounting section and the fine adjustment mechanism being coupled to the mounting section.

3. The telescopic filling screwdriver structure of claim 2, wherein the coarse adjustment mechanism comprises a coarse adjustment screw plate and a coarse adjustment stud, wherein:

the coarse adjustment screw disc is in threaded fit with the coarse adjustment screw bolt;

the installation section is installed and arranged on the coarse adjustment screw bolt, and the coarse adjustment screw plate is rotated, so that the coarse adjustment screw bolt drives the installation section to axially move.

4. The telescopic filling screwdriver structure of claim 2, wherein the fine adjustment mechanism comprises a fine adjustment screw plate and a fine adjustment stud, wherein:

the fine adjustment screw disc is in threaded fit with the fine adjustment screw bolt;

the mounting section is arranged on the fine adjustment screw bolt, and the fine adjustment screw plate is rotated, so that the fine adjustment screw bolt drives the mounting section to axially move.

5. The telescopic filling type screwdriver structure according to claim 2, wherein the telescopic adjusting mechanism comprises a limiting fixed disc, a plurality of limiting holes are densely distributed on the limiting fixed disc, and the unit filling columns slide through the limiting holes.

6. The telescopic filling screwdriver structure of claim 1, wherein the mounting section is configured as a mounting bar, the elastically telescopic actuating section comprises a first elastic member and an actuating bar, wherein:

the end face of one end of the installation rod is provided with a guide groove along the axial direction, one end of the execution rod is inserted in the guide groove in a sliding mode, the first elastic piece is arranged in the guide groove, and two ends of the first elastic piece are connected with the installation rod and the execution rod respectively.

7. A multi-functional screwdriver, comprising a tool bar and the telescopic filling screwdriver structure of any one of claims 1-6, wherein:

the telescopic adjusting mechanism is arranged on the cutter bar;

the mounting section is movably inserted into the cutter bar along the head of the cutter bar.

8. The multifunctional screwdriver according to claim 7, wherein the multifunctional screwdriver comprises a magnetic attraction mechanism, the magnetic attraction mechanism is arranged in the cutter bar, and the magnetic attraction mechanism can adsorb the bolt to be dismounted through the unit filling column.

9. The multifunctional screwdriver according to claim 8, wherein the magnetic attraction mechanism comprises a piezoelectric ring made of piezoelectric material;

the unit filling column is arranged as a silicon steel column.

10. The multi-function screwdriver of any one of claims 9, wherein the multi-function screwdriver comprises a button and a second resilient member, wherein:

the button is arranged at the tail part of the cutter bar, the second elastic piece is arranged in the cutter bar, and two ends of the second elastic piece are respectively abutted with the abutting end of the button and the piezoelectric ring.

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