CN111203827B

CN111203827B - Novel screwdriver

Info

Publication number: CN111203827B
Application number: CN202010083785.9A
Authority: CN
Inventors: 代佳豪
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-10
Filing date: 2020-02-10
Publication date: 2021-06-08
Anticipated expiration: 2040-02-10
Also published as: CN111203827A

Abstract

The invention discloses a novel screwdriver which comprises a handle (1), wherein a cutter bar (2) is fixedly connected to the handle (1), a screw head (3) is connected to the cutter bar (2), a guide sleeve assembly is connected to the cutter bar (2) in a sliding manner, a plurality of radial flow channels (4) are arranged in the guide sleeve assembly, an axial flow channel (5) is arranged in the guide sleeve assembly, the axis of the axial flow channel (5) is superposed with the axis of the cutter bar (2), and an opening (6) for the screw head (3) to pass through is formed in the guide sleeve assembly between the axial flow channel (5) and the radial flow channels (4); a radial rod (7) is connected to the guide sleeve assembly in a sliding mode, an arc-shaped supporting plate (8) is arranged on the radial rod (7), and a first magnet is arranged on the arc-shaped supporting plate (8); a time delay mechanism used for stopping the arc-shaped supporting plate (8) at the position of the opening (6) is arranged between the radial rod (7) and the guide sleeve component. The novel screwdriver is higher in automation level and capable of achieving automatic replacement of the screw head.

Description

Novel screwdriver

Technical Field

The invention relates to the field of screwdrivers, in particular to a novel screwdriver with a replaceable screwdriver head.

Background

The traditional screwdriver only has one screw head type, and corresponding screw heads need to be matched according to different rotation conditions; for example, for a straight screw, a straight screw head needs to be matched; for a cross-shaped screw, a cross-shaped screw head needs to be matched; in addition, for screws with different sizes, screw heads with corresponding sizes are required to be matched; in order to improve the application occasion of the screwdriver, the screwdriver in the prior art can detachably connect screw heads, namely, the screw heads with different types are detachably connected with a screwdriver rod, the screwdriver rod is fixedly connected to a handle, and the screw heads and the end part of the screwdriver rod are mutually attracted through magnetic force; when an operator holds the handle to rotate the cutter bar, the screw head is driven to rotate together, and the screw is screwed into a required position; in order to facilitate carrying and avoid omission of screw heads, in the prior art, a containing cavity is formed in the handle, and the containing cavity can be used for containing screw heads of various types and sizes; when the screw head needs to be replaced, an operator firstly takes the screw head off the end part of the cutter bar, then takes out the required screw head in the accommodating cavity and installs the screw head on the end part of the cutter bar, and finally, the idle screw head is accommodated in the accommodating cavity; that is to say, still can't realize the automatic work of changing the screw head of screwdriver through prior art's screwdriver, still need aim at the spliced eye on cutter arbor tip and the screw head through operating personnel and just can accomplish the change, work efficiency is high-efficient inadequately, and automatic aquatic products are high inadequately.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects of the prior art and provides a novel screwdriver which is higher in automation level and can realize automatic replacement of a screw head.

The technical scheme of the invention is to provide a novel screwdriver with the following structure: the screw driver comprises a handle, a cutter bar is fixedly connected to the handle, a screw head is connected to the cutter bar, the screw head is in clutch connection with the end of the cutter bar, a guide sleeve assembly is connected to the cutter bar in a sliding mode, a plurality of radial flow channels used for containing the screw head are arranged in the guide sleeve assembly, the radial flow channels are distributed on the periphery of the cutter bar, and the radial flow channels rotate around the circumferential direction of the cutter bar; an axial flow channel is arranged in the guide sleeve assembly, the axis of the axial flow channel is superposed with the axis of the cutter bar, the axial flow channel is positioned on the sliding track of the cutter bar, and an opening for a screw head to pass through is arranged between the axial flow channel and the radial flow channel of the guide sleeve assembly; the guide sleeve assembly is connected with a radial rod used for pushing a screw head in the radial flow channel into the axial flow channel in a sliding mode, an arc-shaped supporting plate used for being inserted into or separated from the opening is arranged on one end, facing the cutter bar, of the radial rod, a first magnet used for being mutually attracted with the screw head is arranged on the arc-shaped supporting plate, the first magnet can exert attraction on the screw head in the circumferential flow channel, and then the screw head in the circumferential flow channel is transferred into the radial flow channel; a delay mechanism used for enabling the arc-shaped supporting plate to stay at the opening position is arranged between the radial rod and the guide sleeve assembly, the delay mechanism can enable the arc-shaped supporting plate to stay at the opening position within the time when the end part of the cutter bar is in splicing fit with the screw head in the axial flow channel after the screw head is transferred from the radial flow channel to the axial flow channel, so that the arc-shaped supporting plate can support the screw head within the period of time, the attractive force between the screw head and the first magnet can increase the frictional resistance when the screw head is pushed by the cutter bar, and the frictional resistance is beneficial to improving the splicing efficiency of the end part of the cutter bar and; frictional resistance between the cutter bar and the screw head can increase the interaction force between the cutter bar and the screwdriver when the cutter bar and the screwdriver are mutually inserted, and the end part of the cutter bar is more easily inserted into the inner hole of the screw head.

Preferably, the screw head is connected with the end of the cutter bar in a clutch manner, namely, an inner hole is formed in the screw head and faces one end of the cutter bar, the inner hole is formed in the length direction of the cutter bar, the cross section structure of the inner hole is a hexagonal structure, the shape of the cutter bar is a hexagonal structure matched with the inner hole, the cutter bar and the screw head are mutually attracted through magnetic force, and a pointed end structure is arranged at one end, used for being connected with the screw head, of the cutter bar.

Preferably, the guide sleeve assembly comprises a support ring, a rotating ring and a sleeve, a first through hole for the cutter bar to pass through is formed in the support ring, an axial flow channel is arranged on the support ring along the axial direction of the cutter bar, the axial flow channel is communicated with one end, away from the handle, of the support ring, and an opening is formed in the support ring along the diameter direction of the cutter bar; the rotary ring is rotatably connected to the outer peripheral wall of the support ring through a bearing, the radial runners are uniformly distributed on the rotary ring around the axis of the cutter arbor, the radial runners penetrate through the diameter direction of the rotary ring, the width value of the radial runners in the circumferential direction of the cutter arbor is greater than or equal to the width value of the opening in the circumferential direction of the cutter arbor, and one end of the rotary ring, which is far away from the handle, is provided with an axial convex ring; the sleeve is sleeved on the peripheral wall of the rotating ring, an end cover is arranged on the sleeve towards one end of the handle, a second through hole for the cutter bar to pass through is formed in the end cover, the end cover is fixedly connected with the support ring through an axial screw, a compression ring used for limiting the rotating ring in the axial direction is arranged at one end, deviating from the handle, of the sleeve, the compression ring is fixedly connected with the sleeve through a radial screw, and a notch for the arc-shaped supporting plate to pass through is formed.

As an improvement of the invention, the radial rod is arranged along the diameter direction of the cutter bar, the width value m of the arc-shaped supporting plate in the diameter direction of the cutter bar is equal to the width value n of the opening in the diameter direction of the cutter bar, and the arc-shaped supporting plate and the opening are positioned in the same diameter direction of the cutter bar; when the arc supporting plate is positioned at the opening, the arc supporting plate and the supporting ring form a complete circular ring; the concave surface of the arc-shaped supporting plate is provided with a convex strip protruding towards the cutter bar, and the convex strip is distributed on the arc-shaped supporting plate along the length direction of the cutter bar; after the screw head was pushed away to the axial runner by the arc layer board in, the sand grip can play and raise the position of screw head in the axial runner, and then makes the screw head axis be close to the axial runner axis more, more is favorable to the tip structure on the guide arm to insert in the hole of screw head, improves the efficiency that follow-up cutter arbor tip and screw head peg graft promptly.

As an improvement of the invention, the width of each radial flow passage in the circumferential direction of the swivel is equal and the width of the radial flow passages in different diameter values on the swivel is equal.

As an improvement of the invention, the support ring, the rotating ring and the sleeve are all in a circular ring structure, and the axes of the cutter bar, the support ring, the rotating ring and the sleeve are superposed.

As an improvement of the invention, the arrangement of the delay mechanism between the radial rod and the guide sleeve component for the arc-shaped supporting plate to stay at the opening position means that the outer peripheral wall of the sleeve is provided with a shell at the position of the notch, the radial rod is connected to the shell in a sliding way through a dovetail groove, the sleeve is provided with a stop block at the position of the notch for abutting against or separating from the outer convex surface of the arc-shaped supporting plate, and a tension spring for pulling the arc-shaped supporting plate to abut against the stop block is arranged between the shell; the shell is connected with the arm-tie that is used for supporting tightly or breaks away from with the handle along cutter arbor axial direction sliding, and the arm-tie is through supporting tight subassembly sliding connection on the shell, is equipped with the spacing hole that supplies radial pole to pass on the arm-tie, is equipped with on the radial pole to be used for with spacing hole cooperation in order to drive the gliding sloping block of arm-tie.

As an improvement of the invention, the fact that the pulling plate is slidably connected to the housing through the abutting assembly means that the pulling plate is provided with a first limiting block and a second limiting block, the first limiting block and the second limiting block are respectively positioned at two sides of the housing, the second limiting block is positioned outside the housing, the first limiting block is positioned inside the housing, and the pulling plate is slidably connected to the housing towards the handle direction; a pressure spring is sleeved on the pull plate, one end of the pressure spring abuts against the second limiting block, the other end of the pressure spring abuts against the shell, and a square hole for the inclined block to pass through is formed in the shell; when the first limiting block abuts against the inner wall of the shell, the distance L1 from the end part of the pull plate facing the handle to the end cover is larger than the length value L2 of the inclined block in the axial direction of the cutter arbor; the end cover is a metal part, the handle is provided with a second magnet which is mutually attracted with the end cover, and the attraction force of the end cover and the second magnet is larger than the maximum elastic force value of the pressure spring.

As an improvement of the invention, the tension spring and the stop block are positioned at the same side of the arc-shaped supporting plate, one end of the tension spring is rotatably connected with the arc-shaped supporting plate, and the other end of the tension spring is rotatably connected with the shell.

As an improvement of the invention, one end of the support ring close to the handle is provided with a first step surface, the bearing inner ring is sleeved on the first step surface, the first step surface is sleeved with an inner shaft sleeve, one end of the inner shaft sleeve is abutted against the bearing inner ring, and the other end of the inner shaft sleeve is abutted against the end cover; and a second step surface is arranged at one end of the rotating ring close to the handle, an outer shaft sleeve is sleeved on the second step surface, one end of the outer shaft sleeve is tightly abutted to the rotating ring, and the other end of the outer shaft sleeve is tightly abutted to the end cover.

After the structure is adopted, compared with the prior art, the novel screwdriver has the advantages that the screwdriver head can be automatically replaced by pulling the screwdriver rod to slide in the axial flow channel, and the novel screwdriver specifically comprises the following steps: when the screw head on the cutter bar is abutted against the end face of the support ring, the screw head can be separated from the end of the cutter bar, the rotating ring is twisted by holding the peripheral wall of the axial convex ring to rotate, so that a radial flow channel which is not provided with the screw head can be aligned with the opening on the support ring, the screw head in the axial flow channel can slide towards the direction of the arc-shaped support plate under the magnetic attraction of the first magnet on the arc-shaped support plate, namely, the screw head in the axial flow channel can pass through the opening and is accommodated in the radial flow channel; then, the required screw head is adjusted to the position corresponding to the opening through the rotary ring, the screw head in the radial flow channel can be pushed into the axial flow channel by pressing the radial rod, and then the cutter bar is driven to penetrate through the axial flow channel so as to sleeve the screw head in the axial flow channel on the cutter bar, thereby finishing the replacement action of the screw head; therefore, the action of manually taking off the screw head from the end part of the cutter bar is omitted, the action of manually sleeving the screw head on the cutter bar can be omitted, an operator is not required to align the end part of the cutter bar and the inner hole on the screw head, and all the screw heads are orderly stored in the rotating ring; wherein, after pressing radial pole, the sloping block on the radial pole can pass spacing hole and take place the joint with the arm-tie, the arc layer board can stop at open position a period, the screwdriver head in the axial runner is cup jointed after away by the cutter rod tip, the arm-tie can take place to support tightly in order to remove the restraint of arm-tie to radial pole with the handle, can ensure through this action that the in-process screw head that the screwdriver head cup jointed in the axial runner in cutter rod tip and axial runner receives the supporting role of arc layer board, and then improve the efficiency that the screwdriver rod tip cup jointed with the screwdriver head. In conclusion, the invention provides a novel screwdriver which is higher in automation level and can realize automatic replacement of the screw head.

Drawings

Fig. 1 is a schematic view of the novel screwdriver of the invention.

Fig. 2 is a schematic structural view of the guide bush assembly according to the present invention.

Fig. 3 is a state diagram of the arc pallet of the present invention in the open position.

FIG. 4 is a cross-sectional view of the guide sleeve assembly of the present invention taken along a diameter thereof.

Fig. 5 is a cross-sectional view of the arcuate pallet of the present invention in an open position.

FIG. 6 is a schematic view of the structure of the support ring of the present invention.

Fig. 7 is a schematic view of the position of the opening in the support ring.

Fig. 8 is a schematic structural view of a radial flow passage on the swivel ring of the present invention.

Fig. 9 is a diagram of the position relationship between the swivel ring and the support ring according to the present invention.

Fig. 10 is a schematic structural view of the upper pressing ring of the sleeve in the invention.

Fig. 11 is a diagram showing the positional relationship of the housing on the sleeve in the present invention.

FIG. 12 is a diagram showing the positional relationship among the arc-shaped supporting plate, the radial rods and the pulling plate.

Shown in the figure: 1. a handle, 2, a cutter bar, 3, a screw head, 4, a radial flow passage, 5, an axial flow passage, 6, an opening, 7, a radial rod, 8, an arc-shaped supporting plate, 9, a supporting ring, 10, a rotating ring, 11, a sleeve, 12, a bearing, 13, an axial convex ring, 14, an end cover, 15, an axial screw, 16, a pressing ring, 17, a radial screw, 18, a notch, 19, a convex strip, 20, a shell, 21, a stop block, 22, a tension spring, 23, a pulling plate, 24, a limiting hole, 25, an inclined block, 26, a first limiting block, 27, a second limiting block, 28, a compression spring, 29, a square hole, 30, a first step surface, 31, an inner shaft sleeve, 32, a second step surface, 33, an outer shaft sleeve, 34, a third step surface, L1, a distance from the end part of the pulling plate facing the handle to the end cover, L2, a length value of the inclined block in the cutter bar axis direction, m and a width value of the arc, n, the width value of the opening in the diameter direction of the cutter bar.

Detailed Description

The invention is further described with reference to the following figures and detailed description.

As shown in the figure, the novel screwdriver comprises a handle 1, wherein a screwdriver rod 2 is fixedly connected to the handle 1, an operator can adjust the feeding direction of the screwdriver rod 2 by holding the handle 1 by hand, a screw head 3 is connected to the screwdriver rod 2, and the screw head 3 is connected with the end part of the screwdriver rod 2 in a clutch manner; the screw head 3 is connected with the end part of the cutter bar 2 in a clutch way, namely the screw head 3 can be detached from the cutter bar 2, and then the screw head 3 with other shapes and sizes is replaced on the cutter bar 2; the cutter bar 2 is connected with a guide sleeve assembly in a sliding manner, a plurality of radial flow channels 4 for containing screw heads 3 are arranged in the guide sleeve assembly, the radial flow channels 4 are distributed on the periphery of the cutter bar 2, and the radial flow channels 4 rotate around the circumferential direction of the cutter bar 2; an axial flow channel 5 is arranged in the guide sleeve assembly, the axis of the axial flow channel 5 is overlapped with the axis of the cutter bar 2, the axial flow channel 5 is positioned on the sliding track of the cutter bar 2, and an opening 6 for a screw head 3 to pass through is arranged between the axial flow channel 5 and the radial flow channel 4 of the guide sleeve assembly; the guide sleeve assembly is connected with a radial rod 7 in a sliding mode, the radial rod 7 is used for pushing the screw head 3 in the radial flow channel 4 into the axial flow channel 5, an arc-shaped supporting plate 8 used for being inserted into or separated from the opening 6 is arranged on one end, facing the cutter bar 2, of the radial rod 7, and a first magnet used for being mutually attracted with the screw head 3 is arranged on the arc-shaped supporting plate 8; a time delay mechanism for stopping the arc-shaped supporting plate 8 at the position of the opening 6 is arranged between the radial rod 7 and the guide sleeve assembly.

The end part clutch type connection of the screw head 3 and the cutter bar 2 means that an inner hole is arranged on one end of the screw head 3 facing to the cutter bar 2, and the screw head 3 placed in the radial flow passage 4 is provided with an inner hole facing to the direction of the handle 1, so that the cutter bar 2 can be ensured to be inserted into the inner hole of the screw head 3 when reciprocating in the axial flow passage 5, the inner hole is arranged along the length direction of the cutter bar 2, the section structure of the inner hole is a regular hexagon structure, the shape of the cutter bar 2 is a regular hexagon structure matched with the inner hole, the cutter bar 2 and the screw head 3 are mutually attracted by magnetic force, and a pointed end structure is arranged at one end of the cutter bar 2 for being inserted into the screw head 3, the pointed end structure is a cone structure; here, only need guarantee that the local position of 2 tip of cutter arbor be regular hexagon structures can, other 2 regions of cutter arbor can be cylindrical structure, for example the length range of 2 tip 3cm of cutter arbor be regular hexagon structures, just so can guarantee that the hole on 2 tip of cutter arbor and the screw head 3 is pegged graft and is cooperated.

The guide sleeve assembly comprises a support ring 9, a rotating ring 10 and a sleeve 11, a first through hole for the cutter bar 2 to pass through is formed in the support ring 9, an axial flow channel 5 is arranged on the support ring 9 along the axial direction of the cutter bar 2, a third step surface 34 is arranged at the junction of the axial flow channel 5 and the support ring 9 in the diameter direction and is used as a limiting surface when a screw head 3 on the cutter bar 2 is separated from the cutter bar 2, the axial flow channel 5 is communicated with one end, away from the handle 1, of the support ring 9, and an opening 6 is formed in the support ring 9 along the diameter direction of the cutter bar 2; specifically, the diameter value of the axial flow passage 5 is larger than that of the first through hole on the support ring 9; the rotary ring 10 is rotatably connected to the outer peripheral wall of the support ring 9 through a bearing 12, the radial flow passages 4 are uniformly distributed on the rotary ring 10 around the axis of the cutter bar 2, the radial flow passages 4 penetrate through the diameter direction of the rotary ring 10, the width value of the radial flow passages 4 in the circumferential direction of the cutter bar 2 is greater than or equal to the width value of the opening 6 in the circumferential direction of the cutter bar 2, and an axial convex ring 13 is arranged at one end, away from the handle 1, of the rotary ring 10; the radial flow channel 4 is formed by guide columns, the radial flow channel 4 for accommodating the screw head 3 is formed between two adjacent guide columns, and the corners of the guide columns are subjected to rounding treatment; the outer peripheral wall of the axial convex ring 13 can be subjected to sanding treatment, so that an operator can avoid slipping when holding the axial convex ring 13 for rotation conversion, namely, the sanding treatment can increase the friction between the operator and the outer peripheral wall of the axial convex ring 13; the sleeve 11 is sleeved on the outer peripheral wall of the rotating ring 10, one end of the sleeve 11, which faces the handle 1, is provided with an end cover 14, the end cover 14 is provided with a second through hole through which the cutter bar 2 penetrates, the end cover 14 is fixedly connected with the support ring 9 through an axial screw 15, one end of the sleeve 11, which faces away from the handle 1, is provided with a pressing ring 16 for axial limiting of the rotating ring 10, the pressing ring 16 is of a circular ring structure, the pressing ring 16 is fixedly connected with the sleeve 11 through a radial screw 17, the sleeve 11 is provided with a notch 18 through which the arc-shaped supporting plate 8 penetrates, and; wherein, the end cover 14 is provided with a counter bore on one side facing the handle 1, and the counter bore can prevent the head of the axial screw 15 from protruding to damage the flatness of the end face of the end cover 14; the axial screws 15 penetrate through the end cover 14 and then are screwed with the support ring 9, the number of the axial screws 15 is multiple, and the plurality of the axial screws 15 are uniformly distributed around the axis of the support ring 9, as shown in fig. 6 and 7; the radial screws 17 penetrate through the pressing ring 16 and are screwed with the outer peripheral wall of the sleeve 11, wherein a plurality of radial screws 17 are arranged, and the plurality of radial screws 17 are uniformly distributed around the axis of the sleeve 11; wherein, deviate from 1 one end of handle on the clamping ring 16 and be equipped with the column structure of buckling, that is to say, be equipped with the radial bulge loop to the shrink of 2 axis directions of cutter arbor on the clamping ring 16, this radial bulge loop supports tightly with swivel 10 portion, and then prescribes a limit to swivel 10 between sleeve 11 and support ring 9, avoids swivel 10 to take place the axial float when having enough to meet the need around cutter arbor 2.

In addition, can make the sign on the axial terminal surface of axial bulge loop 13, different screw heads 3 correspond different signs, make things convenient for operating personnel to select required screw head 3 like this, moreover, this sign can play the effect of aiming at, when this sign and radial pole 7 are just right to the time, just explain that radial runner 4 of this station aims at with arc layer board 8, opening 6.

The radial rod 7 is arranged along the diameter direction of the cutter bar 2, the width value m of the arc-shaped supporting plate 8 in the diameter direction of the cutter bar 2 is equal to the width value n of the opening 6 in the diameter direction of the cutter bar 2, and the arc-shaped supporting plate 8 and the opening 6 are positioned in the same diameter direction of the cutter bar 2; when the arc supporting plate 8 is positioned at the opening 6, the arc supporting plate 8 and the supporting ring 9 form a complete circular ring; be equipped with on the concave surface in the arc layer board 8 and to the bellied sand grip 19 of cutter arbor 2, the interface shape of sand grip 19 is the curved surface structure, and sand grip 19 distributes on arc layer board 8 along 2 length direction of cutter arbor. The raised strips 19 can lift the axis of the screw head 3, specifically, when the arc-shaped supporting plate 8 and the supporting ring 9 form a complete ring, the raised surfaces on the raised strips 19 can lift the screw head 3, so that the axis of the screw head 3 is closer to the axis of the supporting ring 9, that is, the axis of the screw head 3 is closer to the axis of the cutter bar 2; therefore, when the cutter bar 2 is inserted into the screw head 3 in the support ring 9, the pointed structure on the cutter bar 2 can be inserted into the inner hole on the screw head 3 more quickly, and the insertion efficiency is improved; in addition, in the process of inserting the cutter bar 2 and the screw head 3, the arc-shaped supporting plate 8 keeps the matching state with the opening 6 on the supporting ring 9, namely the convex strip 19 keeps the supporting function for the screw head 3, the screw head 3 can also be acted by the radial attraction force of the first magnet as long as the screw head 3 is in the axial flow channel 5, although an axial force is exerted on the screw head 3 along with the axial movement of the cutter bar 2, the friction resistance similar to the increase when the screw head 3 is pushed by the cutter bar 2 is increased, and the radial attraction force of the first magnet on the screw head 3 in the embodiment is favorable for the smooth completion of the inserting action between the end part of the cutter bar 2 and the screw head 3; further, when the cutter bar 2 is fed towards the screw head 3, the complete matching of the end part of the cutter bar 2 and the inner hole of the screw head 3 can be rapidly completed by rotating the cutter bar 2, and then the action of replacing the screw head 3 is completed.

The width of each radial flow channel 4 in the circumferential direction of the swivel 10 is equal, and the width of the radial flow channels 4 in different diameter values of the swivel 10 is equal, i.e. the width of each radial flow channel 4 is equal.

The support ring 9, the rotary ring 10 and the sleeve 11 are all in a circular ring structure, the axes of the cutter bar 2, the support ring 9, the rotary ring 10 and the sleeve 11 are coincident, and the rotary ring 10 is located in a radial gap between the support ring 9 and the sleeve 11.

The delay mechanism for the arc-shaped supporting plate 8 to stay at the position of the opening 6 is arranged between the radial rod 7 and the guide sleeve assembly, namely, a shell 20 is arranged on the outer peripheral wall of the sleeve 11 at the position of the notch 18, the radial rod 7 is connected to the shell 20 in a sliding mode through a dovetail groove, a stop block 21 for abutting against or separating from the outer convex surface of the arc-shaped supporting plate 8 is arranged at the position of the notch 18 of the sleeve 11, and a tension spring 22 for pulling the arc-shaped supporting plate 8 to abut against the stop block 21 is arranged between; shell 20 has along 2 axis direction sliding connection of cutter arbor to be used for supporting the arm-tie 23 tight or break away from with handle 1, and arm-tie 23 is through supporting tight subassembly sliding connection on shell 20, is equipped with the spacing hole 24 that supplies radial pole 7 to pass on the arm-tie 23, is equipped with on the radial pole 7 to be used for with spacing hole 24 edge cooperation in order to drive the gliding sloping block 25 of arm-tie 23, and the thickness of sloping block 25 towards 2 axis direction of cutter arbor reduces gradually. Here, mainly means the time length of the arc-shaped supporting plate 8 in the state of fig. 3, in the time period when the screw head 3 is inserted into the end of the screw holder 2 in the axial flow passage 5, the arc-shaped supporting plate 8 provides radial support for the screw head 3 in the axial flow passage 5 as much as possible, so that the insertion efficiency of the end of the screw holder 2 and the inner hole of the screw head 3 is improved; once the cutter bar 2 and the screw head 3 are inserted, the pull plate 23 axially moves relative to the radial rod 7 in the process that the upper end cover 14 of the sleeve 11 is tightly abutted to the handle 1, namely the pull plate 23 releases the restraint on the inclined block 25 on the radial rod 7, and then the radial rod 7 and the arc-shaped supporting plate 8 are reset under the action of the tension spring 22; in general, the time period during which the arched blade 8 remains engaged with the opening 6 is determined by the speed at which the shank 2 slides axially with respect to the support ring 9, the faster the average speed at which the shank 2 is axially fed, the shorter the time during which the arched blade 8 remains engaged with the opening 6; the slower the average speed of axial feed of the cutter bar 2, the longer the arc-shaped supporting plate 8 keeps fit with the opening 6; the specific time is not required, and the operator only needs to control the speed of inserting the end part of the cutter bar 2 and the screw head 3; subsequently, once the end cap 14 is attracted to the handle 1 by the attraction of the second magnet, the radial rod 7 is released from the constraint of the pulling plate 23 and is reset.

The pulling plate 23 is slidably connected to the housing 20 through the abutting component, that is, the pulling plate 23 is provided with a first limiting block 26 and a second limiting block 27, the first limiting block 26 and the second limiting block 27 are respectively located at two sides of the housing 20, the second limiting block 27 is located outside the housing 20, the first limiting block 26 is located inside the housing 20, and the pulling plate 23 is slidably connected to the housing 20 towards the handle 1; a pressure spring 28 is sleeved on the pull plate 23, one end of the pressure spring 28 is tightly abutted against the second limiting block 27, the other end of the pressure spring 28 is tightly abutted against the shell 20, a square hole 29 for the inclined block 25 to pass through is formed in the shell 20, the square hole 29 is located on the sliding track of the inclined block 25, and the square hole 29 penetrates through the side wall of the shell 20; when the radial rod 7 is fed towards the cutter bar 2, the inclined block 25 on the radial rod 7 passes through the square hole 29 and enters the shell 20; when the first stop block 26 abuts against the inner wall of the shell 20, the distance L1 from the end of the pull plate 23 facing the handle 1 to the end cover 14 is greater than the length value L2 of the inclined block 25 in the axial direction of the cutter bar 2; when the first limit block 26 on the pulling plate 23 abuts against the inner wall of the shell 20, the axial distance from the end part of the pulling plate 23 facing the handle 1 to the end cover 14 is greater than zero, so that the pulling plate 23 can be pushed to slide on the shell 20 when the end cover 14 abuts against the handle 1; the reason why L1 is larger than L2 is to further ensure the stroke size of the pulling plate 23 which can push the pulling plate 23 to move axially relative to the housing 20 and the radial rod 7 in the process of tightly abutting the end cap 14 with the handle 1, so as to release the constraint of the pulling plate 23 on the inclined block 25 on the radial rod 7, so that the radial rod 7 can be restored to the state of FIG. 2 from the state of FIG. 3; if the length of the projection of the inclined block 25 in the axial direction of the tool bar 2 is 1cm, the constraint of the pulling plate 23 on the inclined block 25 can be released as long as the sliding distance of the pulling plate 23 is ensured to be larger than 1cm, namely, the distance from the end part of the pulling plate 23 close to one end of the handle 1 to the end cover 14 in the axial direction of the tool bar 2 is set to be 1.2cm, so that the constraint of the inclined block 25 can be released in the sliding process of the pulling plate 23; or, as long as the sliding distance of the pulling plate 23 is ensured to be greater than 1cm, the pulling plate 23 can release the constraint of the inclined block 25; the end cover 14 is a metal part, a second magnet which is mutually attracted with the end cover 14 is arranged on the handle 1, and the attraction force between the end cover 14 and the second magnet is larger than the maximum elastic force value of the pressure spring 28; for example, the acting force required for the maximum contraction deformation of the compression spring 28 is 30N, and the attraction force between the end cover 14 and the second magnet is set to be 60N, so that the second magnet can attract the end cover 14 to the position of the handle 1, and the end cover 14 is prevented from being separated from the handle 1 due to the elastic force of the compression spring 28; moreover, the attraction between the second magnet and the end cover 14 can push the pulling plate 23 to slide rightward, that is, the attraction between the second magnet and the end cover 14 can overcome the elastic force constraint of the compression spring 28 to cause the pulling plate 23 to slide in the housing 20, so as to release the radial constraint of the pulling plate 23 on the sloping block 25.

The tension spring 22 and the stop block 21 are positioned on the same side of the arc-shaped supporting plate 8, one end of the tension spring 22 is rotatably connected with the arc-shaped supporting plate 8, and the other end of the tension spring 22 is rotatably connected with the shell 20; as long as the inclined block 25 loses the constraint of the pulling plate 23, the tension spring 22 can pull the arc-shaped supporting plate 8 away from the axis of the cutter bar 2 until the arc-shaped supporting plate 8 abuts against the stop block 21.

A first step surface 30 is arranged at one end of the support ring 9 close to the handle 1, an inner ring of the bearing 12 is sleeved on the first step surface 30, an inner shaft sleeve 31 is sleeved on the first step surface 30, one end of the inner shaft sleeve 31 is tightly abutted with the inner ring of the bearing 12, and the other end of the inner shaft sleeve 31 is tightly abutted with the end cover 14; a second step surface 32 is arranged at one end of the rotating ring 10 close to the handle 1, an outer shaft sleeve 33 is sleeved on the second step surface 32, one end of the outer shaft sleeve 33 is tightly abutted with the rotating ring 10, and the other end of the outer shaft sleeve 33 is tightly abutted with the end cover 14.

The working principle is as follows: when the screw head 3 on the cutter bar 2 needs to be replaced, firstly, the handle 1 is held by hand to pull the cutter bar 2 to slide towards the direction of the support ring 9, the screw head 3 on the cutter bar 2 can be abutted against the third step surface 34 on the support ring 9, and the screw head 3 is restrained by the third step surface 34 along with the continuous sliding of the cutter bar 2 towards the handle 1, so that the screw head 3 can be separated from the end part of the cutter bar 2, and the screw head 3 falls into the axial flow passage 5 on the support ring 9; once the screw head 3 loses the support/restraint of the cutter bar 2, the screw head 3 is applied to the position of the opening 6 on the support ring 9 by the attraction force of the first magnet; an operator holds the outer peripheral wall of an axial convex ring 13 on the rotating ring 10 by hands to drive the rotating ring 10 to rotate on the supporting ring 9 until the vacant radial flow passage 4 is adjusted between the opening 6 and the arc-shaped supporting plate 8, and the screw head 3 is attracted into the radial flow passage 4 by a first magnet;

then, selecting the next screw head 3 to be replaced, and adjusting the radial flow channel 4 of the next screw head 3 to the position between the opening 6 and the arc-shaped supporting plate 8 by twisting the rotating ring 10; then, the radial rod 7 is pressed to enable the radial rod 7 to feed towards the axial direction of the cutter bar 2, and the arc-shaped supporting plate 8 on the radial rod 7 can push the screw head 3 in the radial flow passage 4 to move towards the axial flow passage 5 until the arc-shaped supporting plate 8 is matched with the opening 6, namely the arc-shaped supporting plate 8 and the supporting ring 9 form a complete circular ring; here, when the radial rod 7 is fed towards the direction of the cutter bar 2, the inclined block 25 on the radial rod 7 makes one-time contact with the limiting hole 24 on the pulling plate 23, the inclined surface on the inclined block 25 pushes the pulling plate 23 to slide on the housing 20 once, that is, the pulling plate 23 is pushed by the inclined block 25 to move for a certain distance in the direction away from the handle 1, and the first limiting block 26 makes one-time separation from the inner wall of the housing 20; once the inclined block 25 passes through the position of the pulling plate 23, the inclined block 25 abuts against the side wall of the pulling plate 23, the pulling plate 23 automatically resets under the action of the elastic force of the pressure spring 28, and the first limiting block 26 abuts against the inner wall of the shell 20 again, so that the arc-shaped supporting plate 8 can be kept matched with the opening 6 for a period of time until the subsequent pulling plate 23 releases the restraint on the inclined block 25, and is kept for a period of time in the state of fig. 3; the arc-shaped supporting plate 8 is separated from the stop block 21, and the tension spring 22 is spread;

finally, the cutter bar 2 is pushed to feed towards the axial flow channel 5, the tip structure on the cutter bar 2 can be firstly inserted into the screw head 3 in the axial flow channel 5, namely the tip structure can be quickly inserted into the inner hole of the screw head 3, and when the cutter bar 2 is linearly fed towards the screw head 3, the end part of the cutter bar 2 can be accelerated to be completely matched with the inner hole of the screw head 3 by rotating the cutter bar 2; that is, the hexagonal structure of the outer peripheral wall of the cutter bar 2 can be quickened to be completely matched with the hexagonal inner hole in the screw head 3 by rotating the cutter bar 2; thus, when the screw head 3 in the axial flow passage 5 is pushed to the outside of the support ring 9, a replacement action of the screw head 3 is completed; moreover, when the handle 1 approaches the end cover 14, the end cover 14 will be attracted to the handle 1 by the attraction of the second magnet, so that the end cover 14 overcomes the resistance of the compression spring 28; in the process that the end cover 14 abuts against the handle 1, the handle 1 can push the pulling plate 23 to move towards the radial rod 7, the pressure spring 28 is compressed, the limiting hole 24 in the pulling plate 23 is displaced relative to the inclined block 25, namely, the restraint of the pulling plate 23 on the inclined block 25 is released, and then the arc-shaped supporting plate 8 can be reset away from the cutter bar 2 under the tensile force of the tension spring 22 until the arc-shaped supporting plate 8 abuts against the stop block 21.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the scope of the claims of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a novel screwdriver, it includes fixedly connected with cutter arbor (2) on handle (1), is connected with screw head (3) on cutter arbor (2), and screw head (3) are connected its characterized in that with cutter arbor (2) tip separation and reunion formula: the screw driver is characterized in that the cutter bar (2) is connected with a guide sleeve assembly in a sliding manner, a plurality of radial flow channels (4) used for containing screw heads (3) are arranged in the guide sleeve assembly, the radial flow channels (4) are distributed on the periphery of the cutter bar (2), and the radial flow channels (4) rotate around the cutter bar (2) in the circumferential direction; an axial flow channel (5) is arranged in the guide sleeve assembly, the axis of the axial flow channel (5) is overlapped with the axis of the cutter bar (2), the axial flow channel (5) is positioned on the sliding track of the cutter bar (2), and an opening (6) for a screw head (3) to pass through is arranged between the axial flow channel (5) and the radial flow channel (4) of the guide sleeve assembly; a radial rod (7) used for pushing a screw head (3) in the radial flow channel (4) into the axial flow channel (5) is connected to the guide sleeve component in a sliding mode, an arc-shaped supporting plate (8) used for being connected with or separated from the opening (6) is arranged on one end, facing the cutter bar (2), of the radial rod (7), and a first magnet used for attracting the screw head (3) is arranged on the arc-shaped supporting plate (8); a time delay mechanism used for stopping the arc-shaped supporting plate (8) at the position of the opening (6) is arranged between the radial rod (7) and the guide sleeve component.

2. The novel screwdriver of claim 1, wherein: screw head (3) and cutter arbor (2) tip separation and reunion formula are connected and indicate, be equipped with the hole towards cutter arbor (2) one end on screw head (3), and the hole sets up along cutter arbor (2) length direction, and this hole cross-sectional structure is the hexagon structure, and cutter arbor (2) shape is the hexagon structure that matches with this hole, and cutter arbor (2) and screw head (3) are through magnetic force inter attraction, and the one end that is used for pegging graft with screw head (3) on cutter arbor (2) is equipped with the tip structure.

3. The novel screwdriver of claim 1, wherein: the guide sleeve assembly comprises a support ring (9), a rotating ring (10) and a sleeve (11), a first through hole for the cutter bar (2) to pass through is formed in the support ring (9), an axial flow channel (5) is arranged on the support ring (9) along the axial direction of the cutter bar (2), one end, away from the handle (1), of the axial flow channel (5) is communicated with one end, away from the handle (1), of the support ring (9), and an opening (6) is formed in the support ring (9) along the diameter direction of the cutter bar (2); the rotating ring (10) is rotatably connected to the outer peripheral wall of the supporting ring (9) through a bearing (12), the radial flow channels (4) are uniformly distributed on the rotating ring (10) around the axis of the cutter bar (2), the radial flow channels (4) penetrate through the diameter direction of the rotating ring (10), the width value of the radial flow channels (4) in the circumferential direction of the cutter bar (2) is larger than or equal to the width value of the opening (6) in the circumferential direction of the cutter bar (2), and one end, away from the handle (1), of the rotating ring (10) is provided with an axial convex ring (13); sleeve (11) cup joints on change (10) periphery wall, be equipped with end cover (14) on sleeve (11) towards handle (1) one end, be equipped with the second through-hole that supplies cutter arbor (2) to pass on end cover (14), end cover (14) are through axial screw (15) and support ring (9) fixed connection, it is equipped with clamping ring (16) that are used for change (10) axial spacing to deviate from handle (1) one end on sleeve (11), clamping ring (16) are through radial screw (17) and sleeve (11) fixed connection, be equipped with breach (18) that supply arc layer board (8) to pass on sleeve (11).

4. The novel screwdriver of claim 1, wherein: the radial rod (7) is arranged along the diameter direction of the cutter bar (2), the width value (m) of the arc-shaped supporting plate (8) in the diameter direction of the cutter bar (2) is equal to the width value (n) of the opening (6) in the diameter direction of the cutter bar (2), and the arc-shaped supporting plate (8) and the opening (6) are positioned in the same diameter direction of the cutter bar (2); when the arc supporting plate (8) is positioned at the opening (6), the arc supporting plate (8) and the supporting ring (9) form a complete circular ring; the concave surface of the arc-shaped supporting plate (8) is provided with a convex strip (19) protruding towards the cutter bar (2), and the convex strip (19) is distributed on the arc-shaped supporting plate (8) along the length direction of the cutter bar (2).

5. The novel screwdriver as recited in claim 3, wherein: the width of each radial flow passage (4) in the circumferential direction of the rotating ring (10) is equal, and the width of each radial flow passage (4) in the diameter direction of the rotating ring (10) is equal.

6. The novel screwdriver as recited in claim 3, wherein: the support ring (9), the rotating ring (10) and the sleeve (11) are all in a circular ring structure, and the axes of the cutter bar (2), the support ring (9), the rotating ring (10) and the sleeve (11) are overlapped.

7. The novel screwdriver as recited in claim 3, wherein: the delay mechanism for the arc-shaped supporting plate (8) to stay at the opening (6) is arranged between the radial rod (7) and the guide sleeve assembly, namely, a shell (20) is arranged on the position of a notch (18) on the peripheral wall of the sleeve (11), the radial rod (7) is connected to the shell (20) in a sliding mode through a dovetail groove, a stop block (21) for abutting against or separating from the outer convex surface of the arc-shaped supporting plate (8) is arranged on the position of the notch (18) on the sleeve (11), and a tension spring (22) for pulling the arc-shaped supporting plate (8) to abut against the stop block (21) is arranged between the shell (20) and the arc; shell (20) have along cutter arbor (2) axis direction sliding connection have be used for supporting the arm-tie (23) tight or break away from with handle (1), arm-tie (23) are through supporting tight subassembly sliding connection on shell (20), are equipped with spacing hole (24) that supply radial pole (7) to pass on arm-tie (23), are equipped with on radial pole (7) to be used for with spacing hole (24) cooperation in order to drive arm-tie (23) gliding sloping block (25).

8. The novel screwdriver as recited in claim 7, wherein: the pulling plate (23) is connected to the shell (20) in a sliding mode through the abutting component, namely, a first limiting block (26) and a second limiting block (27) are arranged on the pulling plate (23), the first limiting block (26) and the second limiting block (27) are respectively located on two sides of the shell (20), the second limiting block (27) is located on the outer portion of the shell (20), the first limiting block (26) is located inside the shell (20), and the pulling plate (23) is connected to the shell (20) in a sliding mode towards the handle (1); a pressure spring (28) is sleeved on the pull plate (23), one end of the pressure spring (28) is tightly propped against the second limiting block (27), the other end of the pressure spring (28) is tightly propped against the shell (20), and a square hole (29) for the inclined block (25) to pass through is formed in the shell (20); when the first limiting block (26) abuts against the inner wall of the shell (20), the distance (L1) from the end part of the pulling plate (23) facing the handle (1) to the end cover (14) is larger than the length value (L2) of the inclined block (25) in the axial direction of the cutter bar (2); the end cover (14) is made of metal, a second magnet which is used for attracting the end cover (14) is arranged on the handle (1), and the attraction force between the end cover (14) and the second magnet is larger than the maximum elastic force value of the pressure spring (28).

9. The novel screwdriver as recited in claim 7, wherein: the tension spring (22) and the stop block (21) are positioned at the same side of the arc-shaped supporting plate (8), one end of the tension spring (22) is rotatably connected with the arc-shaped supporting plate (8), and the other end of the tension spring is rotatably connected with the shell (20).

10. The novel screwdriver as recited in claim 3, wherein: a first step surface (30) is arranged at one end, close to the handle (1), of the support ring (9), the inner ring of the bearing (12) is sleeved on the first step surface (30), an inner shaft sleeve (31) is sleeved on the first step surface (30), one end of the inner shaft sleeve (31) is abutted against the inner ring of the bearing (12), and the other end of the inner shaft sleeve (31) is abutted against the end cover (14); a second step surface is arranged at one end of the rotating ring (10) close to the handle (1), an outer shaft sleeve (33) is sleeved on the second step surface (32), one end of the outer shaft sleeve (33) is tightly propped against the rotating ring (10), and the other end of the outer shaft sleeve (33) is tightly propped against the end cover (14).