CN116587202A - Electric tool with extension rod - Google Patents

Abstract

The utility model provides a take electric tool of extension pole, including the electric tool main part, install the auxiliary sleeve on the electric tool main part and set up the extension transfer line in the auxiliary sleeve, the electric tool main part includes the host computer and installs the connector on the host computer, the connector inboard rotates and is connected with the interior spindle unit that is connected with the output transmission on the host computer, interior spindle unit can dismantle transmission connection with the extension transfer line, auxiliary sleeve is including the extension protection tube that is located the extension transfer line outside, install at extension protection tube one end and can dismantle the adapter sleeve of connection with the connector and install the installation sleeve at extension protection tube other end, the installation sleeve inboard rotates and is connected with the outer shaft coupling that is used for installing the screwdriver, outer shaft coupling is connected with the extension transfer line transmission, the adapter sleeve outside can dismantle and be connected with the locating part that is used for restricting relative movement of adapter sleeve and connector in adapter sleeve axial direction.

Description

Electric tool with extension rod

Technical Field

The application relates to the technical field of electric tools, in particular to an electric tool with an extension rod.

Background

At present, small-sized electric tools such as an electric drill, an electric screwdriver and the like are widely used in decoration and installation industries, and are popular in construction production. However, in the practical operations of ceiling plate, drilling of high wall, screwing and the like, the electric tool is not only laborious to hold because people are not on the ground, but also is difficult to operate and has low working efficiency, so that an extension rod needs to be installed on the electric tool to adapt to the corresponding operation height.

The extension rod required in the screw driver of the electric tool is long and thin, and meanwhile, the transmission stability of the extension rod is guaranteed, so that the requirement on structural design is very high, great difficulty is caused in design and production, and the related device of the extension rod is not found in the current market. If the structural design is unreasonable, the use effect is poor, the basic quick assembly and disassembly requirement is met, the extension rod is an auxiliary fitting, the extension rod is frequently assembled and disassembled in the use process, the extension rod is installed for use when required, the structure is compact and the transmission is stable after multiple times of assembly and disassembly, and the structural design requirement is conceivable to have very high difficulty, so that the auxiliary fitting of the extension rod is not always arranged in a screw driver, but is very required in practical use.

Disclosure of Invention

The application aims to solve the problems in the prior art and provide an electric tool with an extension rod, wherein the extension rod of the electric tool can be quickly disassembled, and different screw drivers can be conveniently replaced for practical production and application.

The application solves the technical problems by adopting the technical scheme that: the electric tool with the extension rod comprises an electric tool main body, an auxiliary sleeve arranged on the electric tool main body and an extension transmission rod arranged in the auxiliary sleeve, wherein the electric tool main body comprises a main machine and a connector arranged on the main machine, an inner coupler connected with an output end on the main machine in a transmission manner is rotationally connected on the inner side of the connector, the inner coupler is detachably connected with the extension transmission rod in a transmission manner, the auxiliary sleeve comprises an extension protection pipe arranged on the outer side of the extension transmission rod, a connecting sleeve arranged at one end of the extension protection pipe and detachably connected with the connector, and an installation sleeve arranged at the other end of the extension protection pipe, an outer coupler used for installing a screwdriver is rotationally connected on the inner side of the installation sleeve, and a limiting piece used for limiting the relative movement of the connecting sleeve and the connector in the axial direction of the connecting sleeve is detachably connected with the extension transmission rod.

Preferably, polygonal grooves are formed in one side, close to the extension transmission rod, of the inner coupler and in the left end and the right end of the outer coupler, and polygonal columns matched with the polygonal grooves are arranged in the left end and the right end of the extension transmission rod and in the screw driver.

Preferably, the host comprises a shell, a driving motor arranged in the shell, and a driving wheel arranged in the shell and in transmission connection with the driving motor, wherein the driving wheel and the inner coupler are correspondingly arranged at intervals, a first driving tooth is arranged on one side of the driving wheel, which is close to the inner coupler, a second driving tooth is arranged on one side of the inner coupler, which is close to the driving wheel, and a second elastic reset piece is arranged between the inner coupler and the driving wheel.

Preferably, the connector is inboard to be opened there is the second mounting hole that is used for installing the interior shaft coupling, and interior shaft coupling outside is equipped with the second sleeve of installing in the second mounting hole, and it has the spacing card hole of the second in intercommunication polygon groove to open on the interior shaft coupling, and the downthehole side of the spacing card of second is equipped with the second card pearl, and the polygon post outside is opened there is the draw-in groove that corresponds the setting with the second card pearl, and the second sleeve is located the spacing card hole outside of second, and one side that the second sleeve is close to the host computer is equipped with and opens the second cavity that is used for providing the second card pearl and reciprocates in the second mounting hole.

Preferably, the connecting sleeve comprises a plurality of clamping jaws positioned at the outer side of the connector, the limiting piece comprises an adjusting clamp which is positioned at the outer side of the clamping jaws and locks the clamping jaws at the outer side of the connector, and a clamping contact surface which vertically adjusts the clamping force direction of the clamp is arranged at the outer side of the connector.

Preferably, the locating part is including the stop collar that is located the adapter sleeve outside, the one end that the adapter sleeve outside is close to the connector is equipped with outside protrusion setting and spacing in the first spacing portion that adapter sleeve moved to extension protection pipe one side is avoided to the stop collar inboard, be equipped with the second spacing portion that a plurality of interval set up on the connector, the locking adapter sleeve that is located second spacing portion and keeps away from adapter sleeve one side is installed to the stop collar inboard, the locking adapter sleeve inboard is equipped with the third spacing portion that staggers with second spacing portion, the stop collar drives the locking adapter sleeve rotation and makes third spacing portion rotate to the position that corresponds with second spacing portion realize the mutual spacing of second spacing portion and third spacing portion, and then the restriction connector moves to the one side that keeps away from the adapter sleeve.

Preferably, the outer side of the locking connecting sleeve is provided with a plurality of protruding parts protruding out of the locking connecting sleeve, the inner side of the limiting sleeve is provided with a mounting groove corresponding to the protruding parts, the mounting groove extends to one side close to the host machine and penetrates out of the limiting sleeve, the protruding part is clamped and limited in the mounting groove, one side of the locking connecting sleeve, which is close to the host machine, is provided with an annular mounting groove which is arranged on the inner side of the limiting sleeve, and the inner side of the annular mounting groove is provided with a clamp spring which is used for limiting the locking connecting sleeve to deviate from.

Preferably, one side of the connecting sleeve, which is close to the locking connecting sleeve, is provided with a first mounting hole, the bottom of the first mounting hole is connected with a pressing piece movably mounted in the first mounting hole through an elastic piece, one side of the locking connecting sleeve, which is close to the connecting sleeve, is provided with a sliding groove which is arranged corresponding to the pressing piece, and two ends of the sliding groove are provided with locking grooves which are arranged on the locking connecting sleeve.

Preferably, a limiting protrusion is arranged on one side of the locking connecting sleeve, which is close to the connecting sleeve, and a limiting chute which is correspondingly arranged with the limiting protrusion is arranged on the inner side of the connecting sleeve.

Preferably, the outer coupler is rotationally connected to the inner side of the mounting sleeve through the first shaft sleeve, a first limiting clamping hole which is communicated with the polygonal groove at the outer end is formed in the outer coupler, a first clamping bead is arranged on the inner side of the first limiting clamping hole, a sliding sleeve which is rotationally connected to the inner side of the mounting sleeve is arranged between the outer coupler and the mounting sleeve, a first elastic resetting piece which limits the sliding sleeve to slide in the mounting sleeve is arranged on the outer side of the outer coupler, a jacking part which extrudes the first clamping bead to one side of the polygonal groove is arranged on the inner side of the sliding sleeve, a cavity which is formed in the sliding sleeve and used for providing the first clamping bead to move upwards is formed in one side of the jacking part, a boss part is arranged on the outer side of the outer coupler, and two ends of the first elastic resetting piece are respectively propped against the outer side of the sliding sleeve and the boss part.

The beneficial effects of the application are as follows: the application is provided with the limiting piece for limiting the relative movement of the connecting sleeve and the connector, wherein the limiting piece can be an adjusting clamp, and the clamping jaw on the connecting sleeve is adjusted and locked through the adjusting clamp so as to realize the detachable connection of the clamping jaw and the connector; the locating part also can be the limit collar, and limit collar one end passes through the step face with adapter sleeve spacing, and the other end of limit collar rotates through control locking adapter sleeve, and then makes the outer third spacing portion of locking adapter sleeve rotate to the position that corresponds with the outer second spacing portion of connector, realizes the spacing each other of second spacing portion and third spacing portion, realizes the detachable connection of adapter sleeve and connector, and then the quick assembly of the extension rod of being convenient for, dismantles, is convenient for change different screwdriver.

Drawings

FIG. 1 is a schematic diagram of the structure of the present application;

FIG. 2 is an exploded view of the present application;

FIG. 3 is a schematic view of the installation of the power tool body and the inner coupling;

FIG. 4 is a schematic structural view of an auxiliary sleeve;

FIG. 5 is a schematic view of the structure of the connecting sleeve when the limiting member is an adjusting clamp;

FIG. 6 is a schematic view of the installation of the connection sleeve and the connector when the limiting member is an adjustment clip;

FIG. 7 is a cross-sectional view of FIG. 6;

FIG. 8 is a schematic view of the installation of the connecting sleeve and the connector when the limiting member is a limiting sleeve;

FIG. 9 is a cross-sectional view of FIG. 8;

FIG. 10 is a schematic view of the structure of the joint, stop collar and connecting sleeve when the stop member is a stop collar;

FIG. 11 is a schematic view of the structure of the electric tool body and the inner coupling when the spacing member is a spacing sleeve;

FIG. 12 is a schematic view of the structure of the connecting sleeve when the limiting member is a limiting sleeve;

FIG. 13 is a schematic view of a locking adapter sleeve;

FIG. 14 is a cross-sectional view of the mounting sleeve;

FIG. 15 is a schematic view of the outer coupling;

FIG. 16 is a schematic view of the inner coupling and the drive wheel;

fig. 17 is a schematic view of the structure of the adjusting clip as a quick clamp wrench.

Reference numerals illustrate: 1. the electric tool comprises an electric tool main body, 1-1, a main machine, 1-2, a connector, 2, an auxiliary sleeve, 2-1, an extension protection tube, 2-2, a connecting sleeve, 2-3, a mounting sleeve, 2-2-1, a connecting end, 2-2-2, a fixed end, 3, an extension transmission rod, 4, an inner coupler, 5, a screw driver, 6, an outer coupler, 7, a polygonal groove, 8, a polygonal column, 9, a clamping jaw, 10, an adjusting clamp, 11, a clamping contact surface, 12, a limiting sleeve, 13, a first limiting part, 14, a second limiting part, 15, a locking connecting sleeve, 16, a third limiting part, 17, a protruding part, 18, a mounting groove, 19, an annular mounting groove, 20, a clamp spring, 21 and a first mounting hole, 22, elastic pieces, 23, pressing pieces, 24, sliding grooves, 25, locking grooves, 26, limiting protrusions, 27, limiting sliding grooves, 28, first shaft sleeves, 29, first limiting clamping holes, 30, first clamping beads, 31, sliding sleeves, 32, first elastic resetting pieces, 33, pressing parts, 34, cavities, 35, boss parts, 36, shells, 37, driving motors, 38, driving wheels, 39, first driving teeth, 40, second driving teeth, 41, second elastic resetting pieces, 42, second mounting holes, 43, second shaft sleeves, 44, second limiting clamping holes, 45, second clamping beads, 46, clamping grooves, 47, second cavities, 48 and quick clamping spanners.

Detailed Description

The application is further described below with reference to the accompanying drawings:

the application mainly provides an electric tool with an extension rod, which can be an electric tool such as an electric drill, an electric screwdriver and the like, and the electric tool in the following embodiment adopts the electric drill.

Embodiment one:

referring to fig. 1 to 4, an electric tool with an extension rod in the present embodiment includes an electric tool main body 1, an auxiliary sleeve 2 mounted on the electric tool main body 1, and an extension transmission rod 3 provided in the auxiliary sleeve 2; referring to fig. 3, the electric tool main body 1 includes a main machine 1-1 and a connector 1-2 mounted on the main machine 1-1, the connector 1-2 protrudes from the main machine 1-1, an inner coupling 4 is rotatably connected to the inner side of the connector 1-2 through a second sleeve 43, the second sleeve 43 is mounted on the inner side of the inner coupling 4 through a step surface, the inner coupling 4 is in clearance fit with the second sleeve 43, and the inner coupling 4 can not only rotate in the second sleeve 43, but also can move to one side of the connector 1-2 relative to the second sleeve 43;

referring to fig. 4, the auxiliary sleeve 2 includes an extension protecting pipe 2-1 positioned at the outer side of an extension driving rod 3, a connecting sleeve 2-2 which is screw-mounted at one end of the extension protecting pipe 2-1 and detachably connected with a connector 1-2, and a mounting sleeve 2-3 which is screw-mounted at the other end of the extension protecting pipe 2-1, wherein the inner side of the mounting sleeve 2-3 is rotatably connected with an outer coupling 6 for mounting a screw driver 5 through a first shaft sleeve 28, and the first shaft sleeve 28 is fixedly mounted in the mounting sleeve 2-3;

referring to fig. 3 and 16, the host 1-1 in this embodiment includes a housing 36, a driving motor 37 installed in the housing 36, and a driving wheel 38 installed in the housing 36, where the driving wheel 38 may be a worm wheel, an output shaft of the driving motor 37 is designed to be a worm connected with the worm wheel in a driving manner, and further, the driving wheel 38 is driven to rotate by the driving motor 37, and the driving wheel 38 and the inner coupling 4 are correspondingly spaced at a certain distance, a first driving tooth 39 is disposed on a side of the driving wheel 38, which is close to the inner coupling 4, a second driving tooth 40 is disposed on a side of the inner coupling 4, which is close to the driving wheel 38, a second elastic reset element 41 is disposed between the inner coupling 4 and the driving wheel 38, and the second elastic reset element 41 may be a reset spring, and when the second elastic reset element 41 is not contracted, the first driving tooth 39 and the second driving tooth 40 do not contact, and when the inner coupling 4 moves to the driving wheel 38 side relative to the second shaft 43, the first driving tooth 39 on the inner coupling 4 contacts and the second driving tooth 40 on the driving wheel 38 to limit, and further, and the first driving tooth 39 (i.e. the inner coupling 4) is driven to rotate under the action of the second driving tooth 40;

one side of the inner coupler 4, which is close to the host machine 1-1, is in transmission connection with a rotary output end (namely a transmission wheel 38) in the host machine 1-1 through a first transmission tooth 39 and a second transmission tooth 40, a polygonal groove 7 (in the embodiment, a regular hexagon) is formed in the other side of the inner coupler 4, and a polygonal column 8 (a regular hexagon column) which is matched with the polygonal groove 7 is arranged on the extension transmission rod 3 and the screwdriver 5; when in use, one end of the polygonal column 8 on the extension transmission rod 3 is inserted into the polygonal groove 7 of the inner coupler 4, so that the inner coupler 4 can drive the extension transmission rod 3 to rotate and simultaneously the inner coupler 4 and the extension transmission rod 3 can be rapidly disassembled;

the connecting sleeve 2-2 comprises a connecting end 2-2-1 fixedly connected with the extension protection tube 2-1 and a fixed end 2-2-2 positioned outside the connecting head 1-2; the connecting end 2-2-1 of the connecting sleeve 2-2 can be connected with the extension protecting pipe 2-1 through threads, polygonal grooves are formed in the left side and the right side of the outer coupler 6 as shown in reference to fig. 14, polygonal columns inserted into the polygonal grooves are arranged at the two ends of the extension transmission rod 3 and on the screw driver 5, so that the transmission connection of the extension transmission rod 3 and the outer coupler 6 is realized, the other end of the outer coupler 6 is in transmission connection with the screw driver through the polygonal columns and the polygonal grooves, and the screw driver 5 is driven to rotate through the inner coupler 4, the extension transmission rod 3 and the outer coupler 6.

In order to cooperate to realize the quick assembly and disassembly of the extension transmission rod 3, the auxiliary sleeve 2 needs to be quickly assembled and disassembled with the electric tool main body 1, a limiting piece for limiting the relative movement of the connecting sleeve 2-2 and the connector 1-2 in the axial direction of the connecting sleeve 2-2 is detachably connected to the outer side of the connecting sleeve 2-2, and the connecting sleeve 2-2 and the connector 1-2 are installed and connected through the limiting piece;

referring to fig. 5-7, the fixed end 2-2-2 of the connecting sleeve 2-2 comprises a plurality of clamping jaws 9 positioned at the outer side of the connecting head 1-2, 4 limiting pieces are arranged in the embodiment, each limiting piece comprises an adjusting clamp 10 positioned at the outer side of each clamping jaw 9 and used for locking each clamping jaw 9 at the outer side of the connecting head 1-2, a clamping contact surface 11 perpendicular to the clamping force direction of each adjusting clamp 10 is arranged at the outer side of each connecting head 1-2, when the adjusting clamp 10 is used for inwards clamping, each clamping jaw 9 deforms inwards to clamp the clamping contact surface 11 at the outer side of the connecting head 1-2 under the action of clamping force, and then the connecting sleeve 2-2 and the connecting head 1-2 are limited under the action of friction force, so that the connecting sleeve 2-2 is prevented from being separated from the connecting head 1-2 and the connecting head 1-2 can be detachably connected;

specifically, the adjusting clamp 10 is provided with an opening and is annularly arranged, the adjusting clamp 10 is arranged around the fixed end 2-2-2 of the connecting sleeve 2-2, an adjusting screw which sequentially penetrates through the adjusting clamp 10 from top to bottom is arranged at the opening of the adjusting clamp 10, the clamping force of the adjusting clamp 10 to the clamping jaw 9 can be adjusted through rotating the adjusting screw, the clamping jaw 9 clamps the clamping contact surface 11 inwards, the connecting sleeve 2-2 and the connecting head 1-2 are firmly connected, and meanwhile, a handle can be designed on the adjusting clamp 10, so that the clamping device is convenient to hold an extension rod and control the use direction of the extension rod, and the operation of the device is more convenient and labor-saving;

specifically, as shown in fig. 17, the adjusting clamp 10 may also be a quick clamp wrench 48, and the clamping jaw 9 inside is clamped and fixed by the quick clamp wrench 48.

As shown in fig. 14 and 15, in use, in order to realize the installation and locking of the screwdriver 5 and the outer coupler 6, a first limiting clamping hole 29 communicated with the polygonal groove 7 at the outer end is formed in the outer coupler 6, a first clamping bead 30 is arranged at the inner side of the first limiting clamping hole 29, a clamping groove 46 corresponding to the first clamping bead 30 and used for accommodating the lower end part of the first clamping bead 30 is formed in the screwdriver 5, a sliding sleeve 31 rotatably connected at the inner side of the installation sleeve 2-3 is arranged between the outer coupler 6 and the installation sleeve 2-3, the sliding sleeve 31 is respectively in clearance fit with the installation sleeve 2-3 and the outer coupler 6, so that the sliding sleeve 31 can slide at the outer side of the outer coupler 6, and a first elastic reset piece 32 for limiting the sliding sleeve 31 to slide into the installation sleeve 2-3 is arranged at the outer side of the outer coupler 6; specifically, the outer side of the outer coupling 6 in this embodiment is provided with a boss portion 35, two ends of the first elastic restoring member 32 respectively press against the outer sides of the sliding sleeve 31 and the boss portion 35, the inner side of the sliding sleeve 31 is provided with a pressing portion 33 for pressing the first clamping bead 30 to one side of the polygonal groove 7, and one side of the pressing portion 33 away from the first elastic restoring member 32 is provided with a cavity 34 opened in the sliding sleeve 31 for providing upward movement of the first clamping bead 30; when the screw driver 5 is required to be removed from the outer coupler 6, only the sliding sleeve 31 is required to be pressed inwards, so that the pressing part 33 on the sliding sleeve 31 moves to one side of the extension transmission rod 3, the cavity 34 in the sliding sleeve 31 moves to the position above the first clamping bead 30, at the moment, the screw driver 5 is manually pulled outwards, and in the process of pulling out the screw driver 5, the first clamping bead 30 is pushed by the limiting groove to move upwards into the cavity to release the limit of the screw driver 5;

as shown in fig. 3 and 9, in use, in order to realize the installation and locking of the extension transmission rod 3 and the inner coupler 4, a second installation hole 42 for installing the inner coupler 4 is formed in the inner side of the connector 1-2, a second sleeve 43 is installed in the second installation hole 42, a second limit clamping hole 44 communicated with the polygonal groove 7 is formed in the inner coupler 4, a second clamping bead 45 is arranged in the inner side of the second limit clamping hole 44, a clamping groove 46 corresponding to the clamping bead is formed in the outer side of the polygonal column 8, the second sleeve 43 is positioned in the outer side of the second limit clamping hole 44, and a second cavity 47 for providing upward movement of the second clamping bead 45 is formed in the second installation hole 42 on the side, close to the host 1-1, of the second sleeve 43.

Embodiment two:

the first difference from the first embodiment in this embodiment is: the fixed end structure of the connecting sleeve 2-2 in the embodiment and the structure of the limiting piece;

the fixed end 2-2-2 of the connecting sleeve 2-2 in this embodiment may be a continuous tubular structure, the limiting member includes a limiting sleeve 12 located at the outer side of the fixed end 2-2-2 of the connecting sleeve 2-2, the limiting sleeve 12 is an annular structure surrounding the outer side of the fixed end 2-2-2, a first limiting portion 13 protruding outwards is arranged at the outer side of the fixed end 2-2 and limiting on the inner side of the limiting sleeve 12, the specific first limiting portion 13 may be a flange portion arranged on the outer side surface of the fixed end 2-2, and one end of the limiting sleeve 12 is limited on the outer side of the flange portion, so that the fixed end 2-2-2 is prevented from moving to the side far away from the limiting sleeve 12 (i.e. to the side of the extending protecting tube 2-1);

as shown in fig. 11, a locking connecting sleeve 15 is arranged on the inner side of the limiting sleeve 12 and positioned on one side of the second limiting part 14 away from the fixed end 2-2-2; specifically, as shown in fig. 9 and 10, the locking connecting sleeve 15 is sleeved outside the connecting head 1-2 in an annular shape and is positioned between the fixed end 2-2-2 and the host 1-1, a plurality of protruding parts 17 which are arranged at intervals and protrude out of the locking connecting sleeve 15 are arranged outside the locking connecting sleeve 15, a mounting groove 18 which is arranged corresponding to the protruding parts 17 is formed inside the limiting sleeve 12, the mounting groove 18 extends to the side close to the host 1-1 and penetrates out of the limiting sleeve 12 to be arranged, the protruding parts 17 are clamped and limited in the mounting groove 18, in order to facilitate the detachable and fixed installation of the locking connecting sleeve 15, an annular mounting groove 19 which is formed inside the limiting sleeve 12 is formed at the side of the locking connecting sleeve 15 close to the host 1-1, and a clamping spring 20 which is used for limiting the locking connecting sleeve 15 to be separated is arranged inside the annular mounting groove 19; during installation, the locking connecting sleeve 15 is firstly installed from the limiting sleeve 12 close to one side of the host machine 1-1, so that the protruding part 17 on the locking connecting sleeve 15 slides into the installation groove 18, then the clamp spring 20 is clamped into the annular installation groove 19, and the locking connecting sleeve 15 is further limited in the installation groove 18 at the inner side of the clamp spring 20, so that the installation and the positioning of the locking connecting sleeve 15 are realized;

as shown in fig. 10 and 11, the connector 1-2 is provided with a plurality of second limiting portions 14 arranged at intervals, in this embodiment, the second limiting portions 14 are protruding blocks protruding from the connector 1-2, third limiting portions 16 staggered with the second limiting portions 14 are arranged on the inner side of the locking connecting sleeve 15, the third limiting portions 16 are protruding blocks protruding from the inner ring of the locking connecting sleeve 15, and the limiting sleeve 12 drives the locking connecting sleeve 15 to rotate so that the third limiting portions 16 rotate to positions corresponding to the second limiting portions 14, and further mutual limiting of the second limiting portions 14 and the third limiting portions 16 is achieved, and further the connector 1-2 is limited to move to a side far away from the fixed end 2-2-2.

As shown in fig. 12 and 13, in order to limit the rotation angle of the stop collar 12 and make the stop collar 12 lock after rotating by a corresponding angle, in this embodiment, a first mounting hole 21 is opened at one side of the fixed end 2-2-2 close to the locking connection sleeve 15, the bottom of the first mounting hole 21 is connected with a pressing piece 23 movably mounted in the first mounting hole 21 through an elastic piece 22, the elastic piece 22 in this embodiment is a compression spring, one end of the compression spring is fixedly connected at the bottom of the first mounting hole, the other end is fixedly connected with the pressing piece 23, one side of the locking connection sleeve 15 close to the fixed end 2-2 is opened with a sliding groove 24 arranged corresponding to the pressing piece 23, two ends of the sliding groove 24 are provided with locking grooves 25 opened on the locking connection sleeve 15, in this embodiment, in order to make the pressing piece 23 run smoothly during sliding and to make the pressing piece 23 break out from the locking grooves 25 smoothly, the outer end of the pressing piece 23 is designed as a hemispherical shape, and the sliding groove 23 is also designed as a spherical arc groove, the locking groove 25 is designed as a ball connected with the arc groove, when in use, the locking connection sleeve 15 is fixedly connected with the first mounting hole, the sliding connection sleeve is opened at one side of the other end with the sliding connection sleeve 2-2, a sliding position of the sliding connection sleeve 2-2 is just far from the third side of the first end 2-2-2-2 and the sliding connection sleeve 2-2-2 is just far from the first side 1-2-2-2, and the sliding position is limited by the sliding stop joint 2-2-2; when the fixed end 2-2-2 and the connector 1-2 are required to be disassembled, the limiting sleeve 12 is only required to be reversely rotated, so that the hemispherical surface at the outer end of the propping piece 23 and the locking groove 25 are extruded and contracted towards one side of the first mounting hole 21 under the action of force, the propping piece 23 is further separated from the locking groove 25, the locking connecting sleeve 15 is rotated to the original position, the third limiting part 16 is rotated to the position which is arranged at intervals with the second limiting part 14, and the fixed end 2-2-2 and the connector 1-2 can be disassembled and separated at the moment.

As shown in fig. 12 and 13, in order to further limit the rotation angle of the locking connection sleeve 15, a limiting protrusion 26 is disposed on one side of the locking connection sleeve 15 near the fixed end 2-2-2, and a limiting chute 27 corresponding to the limiting protrusion 26 is disposed on the inner side of the fixed end 2-2-2, so that the maximum rotation angle of the locking connection sleeve 15 is limited by the limiting chute 27, and the pressing piece 23 is prevented from being separated from the locking groove 25 due to overlarge rotation angle of the locking connection sleeve 15.

Certain terms are used throughout the description and claims to refer to particular products. It will be appreciated by those of ordinary skill in the art that manufacturers may refer to a same component by different names. It is not intended to distinguish between components that differ in function but not name. In the following description and claims, the terms "include," have "and" include "are open-ended terms, and thus should be interpreted to mean" include, but not limited to.

While the foregoing is directed to the preferred embodiments of the present application, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the application, such changes and modifications are also intended to be within the scope of the application.

Claims (10)

1. The utility model provides a take extension rod's electric tool, includes electric tool main part (1), installs auxiliary sleeve (2) on electric tool main part (1) and sets up extension transfer line (3) in auxiliary sleeve (2), characterized by: the electric tool main body (1) comprises a main machine (1-1) and a connector (1-2) arranged on the main machine (1-1), an inner coupler (4) in transmission connection with an output end on the main machine (1-1) is rotationally connected to the inner side of the connector (1-2), the inner coupler (4) is detachably connected with an extension transmission rod (3), the auxiliary sleeve (2) comprises an extension protection tube (2-1) arranged on the outer side of the extension transmission rod (3), a connecting sleeve (2-2) arranged on one end of the extension protection tube (2-1) and detachably connected with the connector (1-2), and an installation sleeve (2-3) arranged on the other end of the extension protection tube (2-1), an outer coupler (6) used for installing a screw driver (5) is rotationally connected to the inner side of the installation sleeve (2-3), the outer coupler (6) is in transmission connection with the extension transmission rod (3), and the outer side of the connecting sleeve (2-2) is detachably connected with a limiting piece used for limiting the relative movement of the connecting sleeve (2-2) and the connector (1-2) in the axial direction.

2. The extension pole-equipped power tool of claim 1, wherein: polygonal grooves (7) are formed in one side, close to the extension transmission rod (3), of the inner coupler (4) and in the left end and the right end of the outer coupler (6), and polygonal columns (8) matched with the polygonal grooves (7) are formed in the left end and the right end of the extension transmission rod (3) and the screw driver (5).

3. The extension pole-equipped power tool of claim 2, wherein: the host machine (1-1) comprises a shell (36), a driving motor (37) arranged in the shell (36), a driving wheel (38) arranged in the shell (36) and in transmission connection with the driving motor (37), wherein the driving wheel (38) and the inner coupler (4) are arranged at intervals, one side, close to the inner coupler (4), of the driving wheel (38) is provided with a first driving tooth (39), one side, close to the driving wheel (38), of the inner coupler (4) is provided with a second driving tooth (40), and a second elastic reset piece (41) is arranged between the inner coupler (4) and the driving wheel (38).

4. A power tool with extension pole according to claim 3, wherein: the utility model discloses a clutch, including connector (1-2), connector (1-2) inboard is opened there is second mounting hole (42) that are used for installing interior shaft coupling (4), interior shaft coupling (4) outside is equipped with second collar (43) of installing in second mounting hole (42), it has second spacing card hole (44) of intercommunication polygonal slot (7) to open on interior shaft coupling (4), second spacing card hole (44) inboard is equipped with second card pearl (45), open outside polygonal column (8) has draw-in groove (46) that correspond the setting with second card pearl (45), second collar (43) are located the outside of second spacing card hole (44), one side that second collar (43) is close to host computer (1-1) is equipped with and opens be used for providing second cavity (47) that second card pearl (45) moved up in second mounting hole (42).

5. The extension pole-equipped power tool of claim 1, wherein: the connecting sleeve (2-2) comprises a plurality of clamping jaws (9) which are positioned on the outer side of the connecting head (1-2), the limiting piece comprises an adjusting clamp (10) which is positioned on the outer side of the clamping jaws (9) and locks the clamping jaws (9) on the outer side of the connecting head (1-2), and a clamping contact surface (11) which is used for vertically adjusting the clamping force direction of the clamp (10) is arranged on the outer side of the connecting head (1-2).

6. The extension pole-equipped power tool of claim 1, wherein: the limiting piece comprises a limiting sleeve (12) which is positioned on the outer side of the connecting sleeve (2-2), one end, close to the connecting head (1-2), of the outer side of the connecting sleeve (2-2) is provided with a first limiting part (13) which is arranged in an outward protruding mode and limiting on the inner side of the limiting sleeve (12) to prevent the connecting sleeve (2-2) from moving towards one side of the extension protection tube (2-1), a plurality of second limiting parts (14) which are arranged at intervals are arranged on the connecting head (1-2), a locking connecting sleeve (15) which is positioned on the inner side of the limiting sleeve (12) and is far away from the connecting sleeve (2-2) is arranged on the inner side of the second limiting part (14), a third limiting part (16) which is staggered with the second limiting part (14) is arranged on the inner side of the locking connecting sleeve (15), and the limiting sleeve (12) drives the locking connecting sleeve (15) to rotate to enable the third limiting part (16) to rotate to a position corresponding to the second limiting part (14) to achieve mutual limiting of the second limiting part (14) and the third limiting part (16), and further limiting the connecting head (1-2) to move towards one side far away from the connecting sleeve (2-2).

7. The extension pole-equipped power tool of claim 6, wherein: the utility model discloses a locking adapter sleeve, including locking adapter sleeve (15), stop collar (12), locating sleeve (1-1), locating sleeve (15) are equipped with protruding portion (17) that a plurality of protrusion locking adapter sleeve (15) set up, stop collar (12) inboard open have with installation groove (18) that protruding portion (17) correspond the setting, installation groove (18) to be close to one side extension of host computer (1-1) and wear out stop collar (12) setting, protruding portion (17) joint is spacing in installation groove (18), one side that locking adapter sleeve (15) is close to host computer (1-1) is equipped with and opens annular mounting groove (19) of stop collar (12) inboard, annular mounting groove (19) inboard is equipped with jump ring (20) that are used for restricting locking adapter sleeve (15) and deviate from.

8. The extension pole-equipped power tool of claim 6 or 7, wherein: one side of the connecting sleeve (2-2) close to the locking connecting sleeve (15) is provided with a first mounting hole (21), the bottom of the first mounting hole (21) is connected with a pressing piece (23) movably mounted in the first mounting hole (21) through an elastic piece (22), one side of the locking connecting sleeve (15) close to the connecting sleeve (2-2) is provided with a sliding groove (24) which is arranged corresponding to the pressing piece (23), and two ends of the sliding groove (24) are provided with locking grooves (25) which are formed in the locking connecting sleeve (15).

9. The extension pole-equipped power tool of claim 8, wherein: one side of the locking connecting sleeve (15) close to the connecting sleeve (2-2) is provided with a limiting protrusion (26), and the inner side of the connecting sleeve (2-2) is provided with a limiting chute (27) which is arranged corresponding to the limiting protrusion (26).

10. The extension pole-equipped power tool of claim 2, wherein: the outer coupler (6) is rotationally connected to the inner side of the mounting sleeve (2-3) through the first shaft sleeve (28), a first limiting clamping hole (29) which is communicated with the outer end polygonal groove (7) is formed in the outer coupler (6), a first clamping bead (30) is arranged on the inner side of the first limiting clamping hole (29), a sliding sleeve (31) which is rotationally connected to the inner side of the mounting sleeve (2-3) is arranged between the outer coupler (6) and the mounting sleeve (2-3), a first elastic reset piece (32) which limits the sliding sleeve (31) to slide in the mounting sleeve (2-3) is arranged on the outer side of the outer coupler (6), a pressing part (33) which presses the first clamping bead (30) to one side of the polygonal groove (7) is arranged on the inner side of the pressing part (33), a cavity (34) which is formed in the sliding sleeve (31) and used for providing the first clamping bead (30) to move upwards is arranged on one side of the pressing part, a boss part (35) is arranged on the outer coupler (6), and two ends of the first elastic reset piece (35) are pressed against the boss part (35) on the outer side of the sliding sleeve (31).