CN117773826B

CN117773826B - Electric screw driver

Info

Publication number: CN117773826B
Application number: CN202410214512.1A
Authority: CN
Inventors: 王文尧
Original assignee: Foshan Baoshu Technology Co ltd
Current assignee: Foshan Baoshu Technology Co ltd
Priority date: 2024-02-27
Filing date: 2024-02-27
Publication date: 2024-04-30
Anticipated expiration: 2044-02-27
Also published as: CN117773826A

Abstract

The application relates to the technical field of fastening products, and particularly discloses an electric screwdriver which comprises a shell, a connecting rod, a first connecting sleeve, a first transmission rod and a first rotating seat, wherein the connecting rod is rotationally connected to the end part of the shell, and a first positioning groove is formed in the end face of one end of the connecting rod; the first connecting sleeve is connected to the end part of the shell, the first connecting sleeve is sleeved outside the connecting rod, one end face of the first transmission rod is connected with a first positioning block matched with the first positioning groove, the first transmission rod is rotationally connected to the inner wall of the first connecting sleeve, the end face, far away from the connecting rod, of the first transmission rod is connected with a first bevel gear, the end part, far away from the shell, of the first connecting sleeve is rotationally connected with a second bevel gear, and the first bevel gear is meshed with the second bevel gear; one end of the first rotating seat is connected with the second bevel gear, one end of the first rotating seat far away from the second bevel gear extends out of the first connecting sleeve, and a second positioning groove is formed in the end face of the first rotating seat. The application has the advantage of improving the screwing efficiency of the electric screwdriver on screws in a narrow space.

Description

Electric screw driver

Technical Field

The invention relates to the technical field of fastening products, in particular to an electric screwdriver.

Background

A screwdriver is a common fastening tool, and is mainly used for screwing a screw, and the screw is used for connecting two objects. At present, a plurality of products of electric screwdrivers are more efficient and convenient when screwing screws.

The electric screwdriver mainly comprises a shell, a motor and a power supply, wherein the motor and the power supply are arranged in the shell, the output shaft of the motor is connected with a connecting rod for installing a screwdriver bit, the connecting rod extends out of the shell, a hexagonal groove is formed in the end face of the connecting rod, a magnet is arranged in the hexagonal groove, the end part of the screwdriver bit is arranged in the hexagonal groove, the magnet is used for sucking the screwdriver bit, and different types of bits can be installed in the hexagonal groove according to the requirements of a gap of the end face of a screw; when the screw is screwed or unscrewed, the motor drives the connecting rod to rotate by aligning the tool bit at the end part of the connecting rod with the screw and inserting the tool bit into the end part of the screw, and the screw is screwed.

To above-mentioned related art, when needing to go to twist some screws that are in narrow and small space, because electric screwdriver only can twist the screw that is in connecting rod axis direction, and hide the screw in narrow and small space, hardly send into whole electric screwdriver in the narrow and small space, need rotate through L type screwdriver, and when rotating through L type screw, need repeatedly take out L type screwdriver, then adjust the position reinsertion and screw, screw screwed efficiency is lower.

Disclosure of Invention

The application provides an electric screwdriver, which aims to improve the screwing efficiency of the electric screwdriver on screws in a narrow space.

The application provides an electric screwdriver which adopts the following technical scheme:

The electric screwdriver comprises a shell, a connecting rod, a first connecting sleeve, a first transmission rod and a first rotating seat, wherein the connecting rod is rotationally connected to the end part of the shell, one end of the connecting rod extends out of the end part of the shell, a first positioning groove is formed in the end face of the connecting rod, and the first positioning groove is used for accommodating a tool bit of the screwdriver; the first connecting sleeve is detachably connected to the end part of the shell, the first connecting sleeve is sleeved outside the connecting rod, one end face of the first transmission rod is connected with a first positioning block matched with the first positioning groove, the first transmission rod is rotationally connected to the inner wall of the first connecting sleeve, the end face, away from the connecting rod, of the first transmission rod is connected with a first bevel gear, the end face, away from the shell, of the first connecting sleeve is rotationally connected with a second bevel gear, and the first bevel gear is meshed with the second bevel gear; one end of the first rotating seat is connected to the end face of the second bevel gear, one end of the first rotating seat, which is far away from the second bevel gear, extends out of the first connecting sleeve, and a second positioning groove is formed in the end face of the first rotating seat and used for being filled with a tool bit of a screwdriver.

Optionally, the first connecting sleeve comprises a rotating ring, a connecting ring, a first sleeve, a first mounting tube and a first connecting component; the rotary ring is sleeved outside the connecting rod, the rotary ring is detachably connected to the end part of the shell, the connecting ring is connected to the end surface of the rotary ring, which is far away from the shell, the connecting rod passes through the connecting ring, the first sleeve is sleeved outside the connecting rod, one end of the first sleeve is connected to the end surface of the connecting ring, which is far away from the rotary ring, the first sleeve extends to the first transmission rod, the outer circumferential surface of the end part of the first transmission rod, which is close to the connecting rod, is connected with a first bearing, and the outer circumferential surface of the first bearing is slidably connected to the inner circumferential surface of the first sleeve; the first mounting tube is a square tube, a first rotating rod is fixedly connected to the end face of the second bevel gear, the first rotating rod is rotatably connected to the inner wall of the first mounting tube, the first bevel gear and the second bevel gear are positioned in the first mounting tube, and the end part of the first rotating seat extends out of the first mounting tube; the first connecting component is arranged at the end part of the first sleeve, and is used for being connected with the first installation tube.

Optionally, the end face of the shell is connected with a limiting ring, the connecting rod penetrates through the limiting ring, two symmetrical slots are formed in the end face of the limiting ring, two symmetrical limiting grooves are formed in the limiting ring, and the two limiting grooves are respectively communicated with the two slots; the outer peripheral surface of the rotating ring is attached to the inner peripheral surface of the limiting ring, two limiting pins are symmetrically connected to the outer peripheral surface of the rotating ring, the two limiting pins penetrate through the slot and rotate into the limiting groove, and limiting pieces used for fixing the limiting pins are arranged in the limiting ring.

Optionally, the locating part includes spring and stopper, the spacing groove is kept away from the lateral wall of shell is provided with the mounting groove, the spring set up in the mounting groove, stopper sliding connection in mounting groove inner wall, the stopper terminal surface compress tightly in the spring is kept away from the tip of mounting groove tank bottom, the stopper top surface includes first cambered surface and second cambered surface, first cambered surface highest limit with the highest limit of second cambered surface is connected, first cambered surface with the lowest limit of second cambered surface is located in the mounting groove, the second cambered surface laminating in the global of spacer pin, the second cambered surface will the spacer pin compress tightly in the spacing groove.

Optionally, the first coupling assembling includes two first inserts, two first connecting plates and two first semicircle armful rings, two first inserts peg graft respectively in first installation pipe is kept away from in the one end of first sheathed tube, two the one end of first connecting plate connect respectively in two the side that first inserts kept away from each other, two first connecting plates keep away from one end of first inserts to first sheathed tube extends, two the intermediate position of first semicircle armful ring terminal surface is connected respectively in two first connecting plates keep away from the terminal surface of first inserts, two first semicircle armful inner peripheral surface laminating in first sheathed tube outer peripheral surface, two the one end that first semicircle armful is close to each other can dismantle and be connected.

Optionally, the outer circumferential surface of the first bearing is connected with a plurality of first guide strips, and the plurality of first guide strips are uniformly distributed around the circumference of the first bearing; the first sleeve inner peripheral surface is provided with a first guide groove matched with the first guide strip, and the first guide groove is arranged along the axis direction of the first sleeve.

Optionally, a second connecting sleeve is detachably connected to the side surface, close to the first rotating seat, of the first mounting pipe, a second transmission rod is rotatably connected in the second connecting sleeve, and a second positioning block matched with the second positioning groove is connected to the end surface, close to the first rotating seat, of the second transmission rod; the end face, far away from the first locating block, of the second transmission rod is connected with a third bevel gear, the second connecting sleeve is far away from the inner wall of the end part of the first connecting sleeve, the inner wall of the end part of the second transmission rod is rotationally connected with a fourth bevel gear, the fourth bevel gear is meshed with the third bevel gear, the end face of the fourth bevel gear is connected with a second rotating seat, the second rotating seat extends out of the second connecting sleeve, the end face, far away from the fourth bevel gear, of the second rotating seat is provided with a third locating groove, and the third locating groove is used for accommodating a tool bit of a screwdriver.

Optionally, the second connecting sleeve comprises a second sleeve, a second mounting tube and a second connecting assembly; the second sleeve is detachably connected to the side face of the first mounting pipe, the second sleeve is sleeved outside the first rotating seat, and the end face of the second sleeve is attached to the side face of the first mounting pipe; the second sleeve extends to the second transmission rod, the outer peripheral surface of the end part of the second transmission rod, which is close to the first rotating seat, is connected with a second bearing, and the outer peripheral surface of the second bearing is connected with the inner peripheral surface of the second sleeve in a sliding way; the end face of the fourth bevel gear is fixedly connected with a second rotating rod, the second rotating rod is rotationally connected to the inner wall of the second installation tube, the third bevel gear and the fourth bevel gear are positioned in the second installation tube, and the end part of the second rotating seat extends out of the second installation tube; the second connecting component is arranged at the end part of the second sleeve, and is used for being connected with the second installation tube.

Optionally, the second coupling assembling includes two second inserts, two second connecting plates and two second semicircle armatures, two the second inserts peg graft respectively in the second installation pipe is kept away from in the one end of second sheathed tube, two the one end of second connecting plate connect respectively in two the side that the second inserts kept away from each other, two the second connecting plate is kept away from the one end of second inserts extends to the second sheathed tube, two the intermediate position of second semicircle armatures terminal surface is connected respectively in two the second connecting plate is kept away from the terminal surface of second inserts, two the laminating of second semicircle armatures inner peripheral surface in the outer peripheral surface of second sheathed tube, two the one end that the second semicircle armatures are close to each other can dismantle the connection.

Optionally, the outer circumferential surface of the second bearing is connected with a plurality of second guide strips, and the second guide strips are uniformly distributed around the circumference of the second bearing; the second sleeve inner peripheral surface is provided with a second guide groove matched with the second guide strip, and the second guide groove is arranged along the axis direction of the second sleeve.

In summary, the present application includes at least one of the following beneficial technical effects:

1. When the screw in the narrow space is screwed, the first connecting sleeve stretches into the narrow space, the tool bit in the first rotating seat aligns with the screw and is inserted into the screw, the motor drives the connecting rod to rotate, the connecting rod drives the first transmission rod to rotate in the first connecting sleeve through the first positioning block, the first transmission rod drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the first rotating seat to rotate, the first rotating seat drives the tool bit to rotate, and the tool bit rotates the screw, so that the problem that the screw is small in space and the screw driver cannot stretch into the screw can be solved, and the screwing efficiency of the electric screw driver on the screw in the narrow space can be improved; the first connecting sleeve is assembled on the original electric screwdriver, the first locating groove is used for connecting the first transmission rod, the screw in the narrow space is screwed, and when the screw in the narrow space is not required to be screwed, the first connecting sleeve and the first transmission rod are detached, so that the electric screwdriver can be normally used, and the applicability is stronger;

2. When the screw hidden in the equipment is required to be rotated, the first rotating seat drives the second transmission rod to rotate through the second positioning block, the second transmission rod drives the third bevel gear to rotate, the third bevel gear drives the fourth bevel gear to rotate, the fourth bevel gear drives the second rotating seat to rotate, and the second rotating seat drives the screwdriver bit to rotate, so that the screw hidden in the equipment can be rotated;

Drawings

FIG. 1 is a schematic view of the electric screwdriver according to embodiment 1 of the present application;

FIG. 2 is a schematic diagram of an explosion structure of the electric screwdriver according to embodiment 1 of the present application;

FIG. 3 is an enlarged schematic view of the portion A of FIG. 2;

FIG. 4 is a schematic structural view of a limiting member according to embodiment 1 of the present application;

FIG. 5 is an enlarged schematic view of the portion B of FIG. 4;

FIG. 6 is a schematic view of the structure of the electric screwdriver for mounting and dismounting screws in a narrow space according to embodiment 1 of the present application;

FIG. 7 is a schematic view of the electric screwdriver according to embodiment 2 of the present application;

FIG. 8 is a schematic diagram of an explosion structure of the electric screwdriver according to embodiment 2 of the present application;

fig. 9 is a schematic diagram of the assembly and disassembly structure of a screw hidden in the device by the electric screwdriver according to embodiment 2 of the present application.

Reference numerals illustrate:

1. A housing; 11. a connecting rod; 111. a first positioning groove; 12. a limiting ring; 121. a slot; 122. a limit groove; 123. a mounting groove; 13. a limiting piece; 131. a spring; 132. a limiting block; 1321. a first cambered surface; 1322. a second cambered surface; 2. a first connection sleeve; 21. a rotating ring; 211. a limiting pin; 22. a connecting ring; 23. a first sleeve; 231. a first guide groove; 24. a first mounting tube; 25. a first connection assembly; 251. a first plug; 252. a first connection plate; 253. the first semicircular holding ring; 2531. a first clamping block; 2532. a first elastic plate; 2533. a first clamping groove; 3. a first transmission rod; 31. a first positioning block; 32. a first bevel gear; 33. a second bevel gear; 34. a first bearing; 341. a first guide bar; 35. a first rotating lever; 4. a first rotating seat; 41. a second positioning groove; 5. a second connecting sleeve; 51. a second sleeve; 511. a butt joint block; 512. a second guide groove; 52. a second mounting tube; 53. a second connection assembly; 531. a second insert block; 532. a second connecting plate; 533. a second semicircular holding ring; 5331. a second clamping block; 5332. a second elastic plate; 5333. a second clamping groove; 6. a second transmission rod; 61. a second positioning block; 62. a third bevel gear; 63. a fourth bevel gear; 64. a second bearing; 641. a second guide bar; 65. a second rotating lever; 7. a second rotating seat; 71. a third positioning groove; 8. a mounting block; 81. a butt joint groove; 9. a cutter head.

Detailed Description

The application is described in further detail below with reference to fig. 1-9.

The embodiment of the application discloses an electric screwdriver.

Example 1

Referring to fig. 1 to 6, the electric screwdriver comprises a shell 1, a connecting rod 11, a first connecting sleeve 2, a first transmission rod 3 and a first rotating seat 4, wherein the connecting rod 11 is rotatably connected to the end part of the shell 1, one end of the connecting rod 11 extends out of the end part of the shell 1, a first positioning groove 111 is formed in the end surface of the connecting rod 11, the first positioning groove 111 is a hexagonal groove, a magnet is arranged at the bottom of the first positioning groove 111, the first positioning groove 111 is used for being filled with a tool bit 9 of the screwdriver, a motor and a power supply are arranged in the shell 1, the connecting rod 11 is driven by the motor, and the power supply supplies power for the motor; the first connecting sleeve 2 is detachably connected to the end part of the shell 1, the first connecting sleeve 2 is sleeved outside the connecting rod 11, one end face of the first transmission rod 3 is connected with a first positioning block 31 matched with the first positioning groove 111, the first transmission rod 3 is rotationally connected to the inner wall of the first connecting sleeve 2, the end face of the first transmission rod 3, far away from the connecting rod 11, is connected with a first bevel gear 32, the inner wall of the end part of the first connecting sleeve 2, far away from the shell 1, is rotationally connected with a second bevel gear 33, and the first bevel gear 32 is meshed with the second bevel gear 33; one end of the first rotating seat 4 is connected to the end face of the second bevel gear 33, the axis of the first rotating seat 4 is perpendicular to the axis of the connecting rod 11, one end of the first rotating seat 4 far away from the second bevel gear 33 extends out of the first connecting sleeve 2, the end face of the first rotating seat 4 is provided with a second positioning groove 41, the second positioning groove 41 is also a hexagonal groove, the bottom of the second positioning groove 41 is provided with a magnet, and the second positioning groove 41 is used for accommodating the tool bit 9 of a screwdriver.

When a screw in a narrow space is screwed, the cutter head 9 in the first positioning groove 111 at the end part of the connecting rod 11 is taken down, the first connecting sleeve 2 is installed at the end part of the shell 1, the first positioning block 31 at the end part of the first transmission rod 3 is inserted into the first positioning groove 111, the first positioning block 31 is attracted by a magnet in the first positioning groove 111, then the cutter head 9 is arranged in the second positioning groove 41, and the magnet in the second positioning groove 41 attracts the cutter head 9; the first connecting sleeve 2 stretches into a narrow space, the tool bit 9 in the first rotating seat 4 is aligned with the screw and inserted into the screw, the motor drives the connecting rod 11 to rotate, the connecting rod 11 drives the first transmission rod 3 to rotate in the first connecting sleeve 2 through the first positioning block 31, the first transmission rod 3 drives the first bevel gear 32 to rotate, the first bevel gear 32 drives the second bevel gear 33 to rotate, the second bevel gear 33 drives the first rotating seat 4 to rotate, the first rotating seat 4 drives the tool bit 9 to rotate, and the tool bit 9 rotates the screw, so that the problem that the screw is small in space and the screw driver cannot stretch in can be solved, and the rotating efficiency of the electric screw driver on the screw in the narrow space can be improved; through the first connecting sleeve 2 of assembly and borrow first constant head tank 111 to connect first transfer line 3 on original electronic screwdriver, realize the rotation to the screw in the narrow and small space, when need not rotate narrow and small space screw, pull down first connecting sleeve 2 and first transfer line 3, can normally use electronic screwdriver, the suitability is stronger.

The end face of the shell 1 is connected with a limiting ring 12, the connecting rod 11 penetrates through the limiting ring 12, two symmetrical slots 121 are formed in the end face of the limiting ring 12, two symmetrical limiting grooves 122 are formed in the limiting ring 12, and the two limiting grooves 122 are respectively communicated with the two slots 121; the first coupling sleeve 2 comprises a rotating ring 21, a coupling ring 22, a first sleeve 23, a first mounting tube 24 and a first coupling assembly 25; the rotating ring 21 is sleeved outside the connecting rod 11, the outer circumferential surface of the rotating ring 21 is attached to the inner circumferential surface of the limiting ring 12, the connecting ring 22 is connected to the end surface of the rotating ring 21 far away from the shell 1, the connecting rod 11 passes through the connecting ring 22, the first sleeve 23 is sleeved outside the connecting rod 11, one end of the first sleeve 23 is connected to the end surface of the connecting ring 22 far away from the rotating ring 21, the first sleeve 23 extends to the first transmission rod 3, the outer circumferential surface of the end part of the first transmission rod 3 close to the connecting rod 11 is connected with the first bearing 34, and the outer circumferential surface of the first bearing 34 is slidably connected to the inner circumferential surface of the first sleeve 23; the outer peripheral surface of the rotating ring 21 is symmetrically connected with two limiting pins 211, the two limiting pins 211 penetrate through the slot 121 and rotate into the limiting groove 122, and a limiting piece 13 for fixing the limiting pins 211 is arranged in the limiting ring 12; the first installation tube 24 is a square tube, the end face of the second bevel gear 33 is fixedly connected with a first rotating rod 35, the first rotating rod 35 is rotatably connected to the inner wall of the first installation tube 24 through a bearing, the first bevel gear 32 and the second bevel gear 33 are positioned in the first installation tube 24, and the end part of the first rotating seat 4 extends out of the first installation tube 24; a first connection assembly 25 is mounted to an end of the first sleeve 23, the first connection assembly 25 being adapted to connect to the first mounting tube 24.

The first connecting assembly 25 includes two first inserting blocks 251, two first connecting plates 252 and two first semi-circular holding rings 253, the two first inserting blocks 251 are respectively inserted into one end of the first mounting tube 24 far away from the first sleeve 23, the two first inserting blocks 251 are in interference fit with the inner wall of the first mounting tube 24, one ends of the two first connecting plates 252 are respectively connected to the side surfaces of the two first inserting blocks 251 far away from each other, one ends of the two first connecting plates 252 far away from the first inserting blocks 251 extend to the first sleeve 23, the middle positions of the end surfaces of the two first semi-circular holding rings 253 are respectively connected to the end surfaces of the two first connecting plates 252 far away from the first inserting blocks 251, the inner circumferential surfaces of the two first semi-circular holding rings 253 are attached to the outer circumferential surfaces of the first sleeve 23, the outer circumferential surfaces of two ends of one first semi-holding ring 253 are connected with first clamping blocks 2531, the outer circumferential surfaces of the two ends of the other first semi-circular holding rings 253 are connected with first elastic plates 2532, the first elastic plates 2532 extend to the upper parts of the first clamping blocks 2531, and the first clamping blocks 2533 are arranged in the first elastic plates 2532.

The limiting piece 13 comprises a spring 131 and a limiting block 132, the side wall of the limiting groove 122 away from the shell 1 is provided with a mounting groove 123, the spring 131 is arranged in the mounting groove 123, the limiting block 132 is slidably connected to the inner wall of the mounting groove 123, the end face of the limiting block 132 is tightly pressed against the end part of the end of the spring 131 away from the bottom of the mounting groove 123, the top surface of the limiting block 132 comprises a first cambered surface 1321 and a second cambered surface 1322, the highest edge of the first cambered surface 1321 is connected with the highest edge of the second cambered surface 1322, the lowest edge of the first cambered surface 1321 and the second cambered surface 1322 is positioned in the mounting groove 123, the second cambered surface 1322 is attached to the peripheral surface of the limiting pin 211, and the limiting pin 211 is tightly pressed in the limiting groove 122.

The outer circumferential surface of the first bearing 34 is connected with a plurality of first guide strips 341, and the plurality of first guide strips 341 are uniformly distributed around the circumference of the first bearing 34; the first sleeve 23 is provided on its inner circumferential surface with a first guide groove 231 which is fitted with the first guide bar 341, the first guide groove 231 being provided along the axial direction of the first sleeve 23.

When the first connecting sleeve 2 is installed, the limiting pin 211 on the rotating ring 21 is aligned with the slot 121, the limiting pin 211 is inserted into the slot 121, the first sleeve 23 is rotated, the first sleeve 23 drives the connecting ring 22 and the rotating ring 21 to rotate, the limiting pin 211 rotates into the limiting groove 122, the limiting pin 211 extrudes the first cambered surface 1321 of the limiting block 132, the limiting block 132 presses down the spring 131, the limiting block 132 contracts inwards towards the installation groove 123 until the limiting pin 211 passes over the limiting block 132, the limiting block 132 is ejected out of the installation groove 123 under the action of the spring 131, and the second cambered surface 1322 of the limiting block 132 pushes the limiting pin 211 to compress the limiting pin 211 into the limiting groove 122; the first guide bar 341 and the first guide groove 231 drive the first transmission rod 3 to slide in the first sleeve 23, so that the first positioning block 31 is attached to the end face of the connecting rod 11, then the first rotating rod 35 is rotated, the first transmission rod 3 is rotated in the first sleeve 23 through the first bearing 34, so that the first positioning block 31 is aligned with the first positioning groove 111, then the first transmission rod 3 is pushed, the first positioning block 31 is inserted into the first positioning groove 111, and at this time, the first transmission rod 3 is fixed. The two first inserting blocks 251 are aligned with the first mounting tube 24, the two first inserting blocks 251 are inserted into the first mounting tube 24, the two first semicircular holding rings 253 are located on the outer circumferential surface of the first sleeve 23, then the two first semicircular holding rings 253 are pushed to be close to each other, the first clamping blocks 2531 are clamped in the first clamping grooves 2533 of the first elastic plates 2532, at this time, the two first semicircular holding rings 253 are held tightly at the end part of the first sleeve 23, and the first semicircular holding rings 253 are used for connecting and fixing the first mounting tube 24 through the first connecting plate 252 and the first inserting blocks 251.

When the first connecting sleeve 2 needs to be disassembled, the first clamping blocks 2531 and the first clamping grooves 2533 of the first elastic plates 2532 are released, the two first inserting blocks 251 are withdrawn out of the first mounting tube 24, and the first connecting assembly 25 is disassembled; then, the first transmission rod 3 is pulled outwards to release the connection between the first positioning block 31 and the magnet in the first positioning groove 111, then the first sleeve 23 is rotated, the first sleeve 23 drives the connecting ring 22 and the rotating ring 21 to rotate, the rotating ring 21 drives the limiting pin 211 to rotate towards the slot 121, the limiting pin 211 extrudes the second cambered surface 1322, the limiting block 132 compresses the spring 131, the limiting block 132 is retracted into the mounting groove 123 until the limiting pin 211 slides into the slot 121, then the limiting pin 211 is pulled out from the slot 121, the connection between the first connecting sleeve 2 and the shell 1 is released, and the first connecting sleeve 2 is quickly disassembled in a quick disassembling mode to realize quick disassembly of the first connecting sleeve 2.

Example 2

Embodiment 2 is different from embodiment 1 in that, referring to fig. 7-9, a side surface of the first mounting tube 24, which is close to the first rotating seat 4, is detachably connected with a second connecting sleeve 5, a second transmission rod 6 is rotatably connected with the second connecting sleeve 5, and an end surface of the second transmission rod 6, which is close to the first rotating seat 4, is connected with a second positioning block 61 which is mutually matched with the second positioning groove 41; the end face of the second transmission rod 6 far away from the first positioning block 31 is connected with a third bevel gear 62, the end inner wall of the second connecting sleeve 5 far away from the first connecting sleeve 2 is rotationally connected with a fourth bevel gear 63, the fourth bevel gear 63 is meshed with the third bevel gear 62, the end face of the fourth bevel gear 63 is connected with a second rotating seat 7, the axis of the second rotating seat 7 is parallel to the axis of the connecting rod 11, the second rotating seat 7 extends out of the second connecting sleeve 5, the end face of the second rotating seat 7 far away from the fourth bevel gear 63 is provided with a third positioning groove 71, the third positioning groove 71 is a hexagonal groove, the bottom of the third positioning groove 71 is provided with a magnet, and the third positioning groove 71 is used for accommodating a tool bit 9 of a screwdriver.

When the screw hidden in the equipment needs to be rotated, the first rotating seat 4 drives the second transmission rod 6 to rotate through the second positioning block 61, the second transmission rod 6 drives the third bevel gear 62 to rotate, the third bevel gear 62 drives the fourth bevel gear 63 to rotate, the fourth bevel gear 63 drives the second rotating seat 7 to rotate, and the second rotating seat 7 drives the screwdriver bit 9 to rotate, so that the screw hidden in the equipment can be rotated.

The side surface of the first mounting tube 24, which is close to the first rotating seat 4, is connected with two mounting blocks 8, the two mounting blocks 8 are symmetrically arranged about the first rotating seat 4, and the side surface of the two mounting blocks 8, which is far away from the first mounting tube 24, is provided with a butt joint groove 81; the second connecting sleeve 5 comprises a second sleeve 51, a second mounting tube 52 and a second connecting assembly 53; the outer peripheral surface of one end of the second sleeve 51 is symmetrically connected with two butt joint blocks 511 which are matched with the two butt joint grooves 81, the butt joint blocks 511 are connected into the butt joint grooves 81 through screws, the second sleeve 51 is sleeved outside the first rotating seat 4, and the end surface of the second sleeve 51 is attached to the side surface of the first mounting tube 24; the second sleeve 51 extends to the second transmission rod 6, and the outer peripheral surface of the end part of the second transmission rod 6 close to the first rotating seat 4 is connected with a second bearing 64, and the outer peripheral surface of the second bearing 64 is connected with the inner peripheral surface of the second sleeve 51 in a sliding manner; the second installation tube 52 is a square tube, the end face of the fourth bevel gear 63 is fixedly connected with a second rotating rod 65, the second rotating rod 65 is rotationally connected to the inner wall of the second installation tube 52 through a bearing, the third bevel gear 62 and the fourth bevel gear 63 are positioned in the second installation tube 52, and the end part of the second rotating seat 7 extends out of the second installation tube 52; a second connection assembly 53 is mounted to an end of the second sleeve 51, the second connection assembly 53 being for connection to the second mounting tube 52.

The second connecting component 53 includes two second inserting blocks 531, two second connecting plates 532 and two second semicircle holding rings 533, the two second inserting blocks 531 are respectively inserted in one end of the second mounting tube 52 far away from the second sleeve 51, the two second inserting blocks 531 are in interference fit with the inner wall of the second mounting tube 52, one ends of the two second connecting plates 532 are respectively connected to the side surfaces of the two second inserting blocks 531 far away from each other, one ends of the two second connecting plates 532 far away from the second inserting blocks 531 extend to the second sleeve 51, the middle positions of the end surfaces of the two second semicircle holding rings 533 are respectively connected to the end surfaces of the two second connecting plates 532 far away from the second inserting blocks 531, the inner circumferential surfaces of the two second semicircle holding rings 533 are attached to the outer circumferential surface of the second sleeve 51, the outer circumferential surfaces of two ends of one second semicircle holding ring 533 are connected with second clamping blocks 5331, the outer circumferential surfaces of the two ends of the other first semicircle holding ring 253 are connected with second elastic plates 5332, the second elastic plates 5332 extend to the upper parts of the second clamping blocks 5331, and second clamping grooves 5333 are formed in the second elastic plates 5332.

The second bearing 64 has a plurality of second guide bars 641 connected to the outer circumferential surface thereof, the plurality of second guide bars 641 being uniformly distributed around the circumference of the second bearing 64; the second sleeve 51 is provided at an inner circumferential surface thereof with a second guide groove 512 which is engaged with the second guide bar 641, the second guide groove 512 being provided along an axial direction of the second sleeve 51.

When the second connecting sleeve 5 is installed, the two butt joint blocks 511 are aligned with the butt joint grooves 81, the butt joint blocks 511 are inserted into the butt joint grooves 81, then the butt joint blocks 511 are fixed in the installation blocks 8 through screws, the second transmission rod 6 is driven to slide in the second sleeve 51 through the second guide bars 641 and the second guide grooves 512, the second positioning block 61 is attached to the end face of the first rotating seat 4, then the second rotating rod 65 is rotated, the second transmission rod 6 is rotated in the second sleeve 51 through the second bearings 64, the second positioning block 61 is aligned with the second positioning grooves 41, then the second transmission rod 6 is pushed, the second positioning block 61 is inserted into the second positioning grooves 41, and at the moment, the second transmission rod 6 is fixed. The two second inserting blocks 531 are aligned to the second mounting tube 52, the two second inserting blocks 531 are inserted into the second mounting tube 52, the two second semicircular holding rings 533 are located on the outer circumferential surface of the second sleeve 51, then the two second semicircular holding rings 533 are pushed to be close to each other, the second clamping blocks 5331 are clamped in the second clamping grooves 5333 of the second elastic plates 5332, at the moment, the two second semicircular holding rings 533 are held tightly at the end part of the second sleeve 51, and the second semicircular holding rings 533 are used for connecting and fixing the second mounting tube 52 through the second connecting plate 532 and the second inserting blocks 531.

When the second connecting sleeve 5 needs to be disassembled, the clamping connection between the second clamping block 5331 and the second clamping groove 5333 of the second elastic plate 5332 is released, the two second inserting blocks 531 are withdrawn out of the second mounting tube 52, and the second connecting assembly 53 is disassembled; then the second transmission rod 6 is pulled outwards to release the connection of the second positioning block 61 and the magnet in the second positioning groove 41, and then the screw on the butt joint block 511 is unscrewed to release the connection of the second connecting sleeve 5 and the first mounting tube 24, so that the quick dismounting of the second connecting sleeve 5 is realized by the quick dismounting mode of the second connecting sleeve 5.

The implementation principle of the electric screwdriver provided by the embodiment of the application is as follows: when a screw in a narrow space is screwed, the cutter head 9 in the first positioning groove 111 at the end part of the connecting rod 11 is taken down, the first connecting sleeve 2 is installed at the end part of the shell 1, the first positioning block 31 at the end part of the first transmission rod 3 is inserted into the first positioning groove 111, the first positioning block 31 is attracted by a magnet in the first positioning groove 111, then the cutter head 9 is arranged in the second positioning groove 41, and the magnet in the second positioning groove 41 attracts the cutter head 9; the first connecting sleeve 2 stretches into a narrow space, the tool bit 9 in the first rotating seat 4 is aligned with the screw and inserted into the screw, the motor drives the connecting rod 11 to rotate, the connecting rod 11 drives the first transmission rod 3 to rotate in the first connecting sleeve 2 through the first positioning block 31, the first transmission rod 3 drives the first bevel gear 32 to rotate, the first bevel gear 32 drives the second bevel gear 33 to rotate, the second bevel gear 33 drives the first rotating seat 4 to rotate, the first rotating seat 4 drives the tool bit 9 to rotate, and the tool bit 9 rotates the screw, so that the problem that the screw is small in space and the screw driver cannot stretch in can be solved, and the rotating efficiency of the electric screw driver on the screw in the narrow space can be improved; through the first connecting sleeve 2 of assembly and borrow first constant head tank 111 to connect first transfer line 3 on original electronic screwdriver, realize the rotation to the screw in the narrow and small space, when need not rotate narrow and small space screw, pull down first connecting sleeve 2 and first transfer line 3, can normally use electronic screwdriver, the suitability is stronger.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. An electric screwdriver, characterized in that: the screwdriver comprises a shell (1), a connecting rod (11), a first connecting sleeve (2), a first transmission rod (3) and a first rotating seat (4), wherein the connecting rod (11) is rotatably connected to the end part of the shell (1), one end of the connecting rod (11) extends out of the end part of the shell (1), a first positioning groove (111) is formed in the end face of the connecting rod (11), and the first positioning groove (111) is used for accommodating a tool bit (9) of a screwdriver; the first connecting sleeve (2) is detachably connected to the end part of the shell (1), the first connecting sleeve (2) is sleeved outside the connecting rod (11), one end face of the first transmission rod (3) is connected with a first positioning block (31) which is matched with the first positioning groove (111), the first transmission rod (3) is rotationally connected to the inner wall of the first connecting sleeve (2), the end face, far away from the connecting rod (11), of the first transmission rod (3) is connected with a first bevel gear (32), the end part, far away from the shell (1), of the first connecting sleeve (2) is rotationally connected with a second bevel gear (33), and the first bevel gear (32) is meshed with the second bevel gear (33); one end of the first rotating seat (4) is connected to the end face of the second bevel gear (33), one end of the first rotating seat (4) far away from the second bevel gear (33) extends out of the first connecting sleeve (2), a second positioning groove (41) is formed in the end face of the first rotating seat (4), and the second positioning groove (41) is used for being filled with a tool bit (9) of a screwdriver;

The first connecting sleeve (2) comprises a rotating ring (21), a connecting ring (22), a first sleeve (23), a first mounting tube (24) and a first connecting assembly (25); the rotary ring (21) is sleeved outside the connecting rod (11), the rotary ring (21) is detachably connected to the end part of the shell (1), the connecting ring (22) is connected to the end surface of the rotary ring (21) far away from the shell (1), the connecting rod (11) passes through the connecting ring (22), the first sleeve (23) is sleeved outside the connecting rod (11), one end of the first sleeve (23) is connected to the end surface of the connecting ring (22) far away from the rotary ring (21), the first sleeve (23) extends to the position of the first transmission rod (3), the outer circumferential surface of the end part of the first transmission rod (3) close to the connecting rod (11) is connected with a first bearing (34), and the outer circumferential surface of the first bearing (34) is slidably connected to the inner circumferential surface of the first sleeve (23). The first mounting tube (24) is a square tube, a first rotating rod (35) is fixedly connected to the end face of the second bevel gear (33), the first rotating rod (35) is rotatably connected to the inner wall of the first mounting tube (24), the first bevel gear (32) and the second bevel gear (33) are located in the first mounting tube (24), and the end part of the first rotating seat (4) extends out of the first mounting tube (24); the first connecting assembly (25) is arranged at the end part of the first sleeve (23), and the first connecting assembly (25) is used for connecting the first mounting tube (24);

the end face of the shell (1) is connected with a limiting ring (12), the connecting rod (11) penetrates through the limiting ring (12), two symmetrical slots (121) are formed in the end face of the limiting ring (12), two symmetrical limiting grooves (122) are formed in the limiting ring (12), and the two limiting grooves (122) are respectively communicated with the two slots (121); the outer peripheral surface of the rotating ring (21) is attached to the inner peripheral surface of the limiting ring (12), two limiting pins (211) are symmetrically connected to the outer peripheral surface of the rotating ring (21), the two limiting pins (211) penetrate through the inserting grooves (121) and rotate into the limiting grooves (122), and limiting pieces (13) used for fixing the limiting pins (211) are arranged in the limiting ring (12);

The first connecting assembly (25) comprises two first inserting blocks (251), two first connecting plates (252) and two first semicircular holding rings (253), the two first inserting blocks (251) are respectively inserted into one end of the first mounting tube (24) away from the first sleeve (23), one ends of the two first connecting plates (252) are respectively connected to the two side surfaces of the first inserting blocks (251) away from each other, one ends of the two first connecting plates (252) away from the first inserting blocks (251) extend towards the first sleeve (23), the middle positions of the end surfaces of the two first semicircular holding rings (253) are respectively connected to the end surfaces of the two first connecting plates (252) away from the first inserting blocks (251), the inner circumferential surfaces of the two first semicircular holding rings (253) are attached to the outer circumferential surfaces of the first sleeve (23), and one ends of the two first semicircular holding rings (253) close to each other are detachably connected.

2. The power screwdriver of claim 1, wherein: the limiting part (13) comprises a spring (131) and a limiting block (132), the limiting groove (122) is far away from the side wall of the shell (1) and is provided with a mounting groove (123), the spring (131) is arranged in the mounting groove (123), the limiting block (132) is slidably connected to the inner wall of the mounting groove (123), the end face of the limiting block (132) is tightly pressed on the end portion, far away from the bottom of the mounting groove (123), of the spring (131), the top face of the limiting block (132) comprises a first cambered surface (1321) and a second cambered surface (1322), the highest edge of the first cambered surface (1321) and the highest edge of the second cambered surface (1322) are connected, the lowest edge of the first cambered surface (1321) and the second cambered surface (1322) are located in the mounting groove (123), the second cambered surface (1322) is attached to the peripheral surface of the limiting pin (211), and the limiting pin (211) is tightly pressed in the limiting groove (122).

3. The power screwdriver of claim 1, wherein: the outer peripheral surface of the first bearing (34) is connected with a plurality of first guide strips (341), and the plurality of first guide strips (341) are uniformly distributed around the circumference of the first bearing (34); the inner peripheral surface of the first sleeve (23) is provided with a first guide groove (231) which is matched with the first guide strip (341), and the first guide groove (231) is arranged along the axis direction of the first sleeve (23).

4. The power screwdriver of claim 1, wherein: the side surface of the first mounting tube (24) close to the first rotating seat (4) is detachably connected with a second connecting sleeve (5), a second transmission rod (6) is rotationally connected to the second connecting sleeve (5), and a second positioning block (61) matched with the second positioning groove (41) is connected to the end surface of the second transmission rod (6) close to the first rotating seat (4); the end face of the second transmission rod (6) far away from the first positioning block (31) is connected with a third bevel gear (62), the second connecting sleeve (5) is far away from the inner wall of the end part of the first connecting sleeve (2) and is rotationally connected with a fourth bevel gear (63), the fourth bevel gear (63) is meshed with the third bevel gear (62), the end face of the fourth bevel gear (63) is connected with a second rotating seat (7), the second rotating seat (7) extends out of the second connecting sleeve (5), the end face of the second rotating seat (7) far away from the fourth bevel gear (63) is provided with a third positioning groove (71), and the third positioning groove (71) is used for accommodating a tool bit (9) of a screwdriver.

5. The power screwdriver of claim 4, wherein: the second connecting sleeve (5) comprises a second sleeve (51), a second mounting tube (52) and a second connecting assembly (53); the second sleeve (51) is detachably connected to the side face of the first mounting tube (24), the second sleeve (51) is sleeved outside the first rotating seat (4), and the end face of the second sleeve (51) is attached to the side face of the first mounting tube (24); the second sleeve (51) extends to the second transmission rod (6), the outer peripheral surface of the end part of the second transmission rod (6) close to the first rotating seat (4) is connected with a second bearing (64), and the outer peripheral surface of the second bearing (64) is connected with the inner peripheral surface of the second sleeve (51) in a sliding manner; the end face of the fourth bevel gear (63) is fixedly connected with a second rotating rod (65), the second rotating rod (65) is rotatably connected to the inner wall of the second mounting tube (52), the third bevel gear (62) and the fourth bevel gear (63) are positioned in the second mounting tube (52), and the end part of the second rotating seat (7) extends out of the second mounting tube (52); the second connecting assembly (53) is mounted at the end of the second sleeve (51), and the second connecting assembly (53) is used for connecting the second mounting tube (52).

6. The power screwdriver of claim 5, wherein: the second coupling assembling (53) include two second inserts (531), two second connecting plates (532) and two second semicircle armful rings (533), two second inserts (531) peg graft respectively in second installation tube (52) keep away from in the one end of second sleeve pipe (51), two one end of second connecting plates (532) connect respectively in two side that second inserts (531) kept away from each other, two second connecting plates (532) keep away from one end of second inserts (531) to second sleeve pipe (51) extend, two intermediate position of second semicircle armful ring (533) terminal surface is connected respectively in two second connecting plates (532) keep away from the terminal surface of second inserts (531), two second semicircle armful ring (533) inner peripheral surface laminating in the outer peripheral surface of second sleeve pipe (51), two one end that second semicircle ring (533) are close to each other can dismantle the connection.

7. The power screwdriver of claim 5, wherein: the outer peripheral surface of the second bearing (64) is connected with a plurality of second guide strips (641), and the second guide strips (641) are uniformly distributed around the circumference of the second bearing (64); the second sleeve (51) is provided with a second guide groove (512) which is matched with the second guide strip (641) on the inner peripheral surface, and the second guide groove (512) is arranged along the axis direction of the second sleeve (51).