CN214110278U

CN214110278U - Main unit and electric tool

Info

Publication number: CN214110278U
Application number: CN202022750891.6U
Authority: CN
Inventors: 刘力丹; 谢跃
Original assignee: Shanghai Qiwai Culture Technology Co ltd
Current assignee: Shanghai Qiwai Culture Technology Co ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-09-03
Anticipated expiration: 2030-11-24

Abstract

The utility model discloses a host computer and electric tool. The host computer includes: the locking mechanism comprises a rotating sleeve and a locking assembly, the rotating sleeve is rotatably arranged at an interface at one end of the base body, the rotating sleeve is provided with an unlocking driving part, and the locking assembly comprises a locking piece and a first elastic element which are matched with each other; when the plug connector of the tool accessory is inserted into the inner hole of the rotating sleeve, the first end of the locking piece is jointed with the joint part on the plug connector of the tool accessory, and the tool accessory is locked on the locking mechanism; when the rotating sleeve is rotated along a first direction, the unlocking driving part drives the locking piece to move back to the axis direction of the rotating sleeve, the elastic force of the first elastic element driving the locking piece to reset is increased, and the first end of the locking piece is separated from the joint part on the plug connector of the tool accessory and releases the locking of the tool accessory. The electric tool can conveniently realize the locking and unlocking of the tool accessory.

Description

Main unit and electric tool

Technical Field

The utility model relates to an electric tool technical field especially relates to a host computer and electric tool.

Background

The electric tool has the characteristics of convenience in carrying, simplicity in operation, various functions and the like, can greatly reduce the labor intensity, improve the working efficiency and realize manual operation mechanization, is widely applied to the fields of buildings, house decoration, automobiles, machinery, electric power, bridges, gardening and the like, and enters families in a large number. The main machine and the tool head of the existing most electric tools are fixedly connected together, and the main machine and the tool head of the existing electric tools cannot be easily detached.

Chinese patent No. CN1241714C discloses a hand-held power tool with a removable tool holder, chinese patent No. CN105880685B discloses a power tool, chinese patent No. CN206748357U discloses an electric tool with an easily replaceable function, and these prior arts disclose solutions of manual insertion and automatic clamping or manual switch pressing for disassembly.

Disclosure of Invention

The utility model provides a host computer and electric tool of novel structure, after the connection of reality host computer and instrument annex, during the extracting tool annex to separation between host computer and the instrument annex is easily realized to rotatory mode.

The utility model discloses a following technical scheme realizes:

a host for mounting a tool accessory of the docking type, the tool accessory having a docking member, the host comprising: the locking mechanism comprises a rotating sleeve and a locking assembly, the rotating sleeve is rotatably arranged at an interface at one end of the base body, the rotating sleeve is provided with an unlocking driving part, and the locking assembly comprises a locking piece and a first elastic element which are matched with each other;

when the plug connector of the tool accessory is inserted into the inner hole of the rotating sleeve, the first end of the locking piece is jointed with the joint part on the plug connector of the tool accessory, and the tool accessory is locked on the locking mechanism; when the rotating sleeve is rotated along a first direction, the unlocking driving part drives the locking piece to move back to the axis direction of the rotating sleeve, the elastic force of the first elastic element for driving the locking piece to reset is increased, and the first end of the locking piece is separated from the joint part on the plug connector of the tool accessory and releases the locking of the tool accessory.

Preferably, the locking assembly further comprises an elastic reset element arranged in the rotating sleeve, and when the rotating sleeve is rotated in the first direction, the elastic force of the elastic reset element for driving the rotating sleeve to reset is increased.

Preferably, the unlocking driving part is a slope which is arranged on the inner wall of the rotating sleeve and gradually increases in height along the circumferential extension of the rotating sleeve, a concave part for accommodating at least part of the unlocking driving part is arranged on the locking piece, and when the rotating sleeve is rotated along a first direction, the locking piece moves back to the axial direction of the rotating sleeve due to the height change of the unlocking driving part.

Preferably, be provided with first butt portion on the periphery wall of the neighbouring first end of locking piece, be provided with the confession on the interface outer wall of the one end of base member the first through-hole that the first end of locking piece passed, be provided with the installation department outside the interface outer wall of the one end of base member, first elastic element cover is established on the locking piece, the one end butt of first elastic element first butt portion, the other end butt of first elastic element the installation department.

Preferably, the rotating sleeve is provided with a plurality of unlocking driving parts, the locking mechanism comprises a plurality of locking assemblies, locking pieces of the locking assemblies are used for being matched with the joint parts on the plug connectors of the tool accessories in a one-to-one correspondence mode, and the unlocking driving parts are used for being matched with the locking pieces of the locking assemblies in a one-to-one correspondence mode.

Preferably, the plurality of locking assemblies are uniformly distributed along the circumferential direction of the rotating sleeve.

The electric tool comprises a main machine and a tool accessory, and is characterized in that the main machine is the main machine, and the tool accessory is provided with a plug connector.

Preferably, the first end of the locking member has a wedge structure, and when the plug connector of the tool accessory is inserted into the inner hole of the rotating sleeve, the inclined wall of the wedge structure of the first end of the locking member faces the plug connector of the tool accessory.

Preferably, the peripheral edge of the plug-in part of the tool attachment facing the front end face of the locking mechanism has a chamfered configuration.

Preferably, the engagement portion on the plug member of the tool attachment is a wedge-shaped groove that mates with the wedge-shaped formation of the first end of the latch member.

Preferably, the rotating sleeve is provided with an ejection driving portion, the connector is provided with a receiving portion, the locking mechanism further comprises an ejection assembly, the ejection assembly comprises an ejection piece and a second elastic element which are matched, the ejection driving portion drives the ejection piece to move towards the axis direction of the rotating sleeve and increase the elastic force for driving the ejection piece to reset along a first direction when the rotating sleeve rotates, and the first end of the ejection piece applies an acting force to the receiving portion on the connector of the tool accessory to drive the connector of the tool accessory to withdraw from the rotating sleeve.

Preferably, the ejection driving portion is a slope which is arranged on the inner wall of the rotating sleeve and extends along the circumferential direction of the rotating sleeve, the height of the slope gradually increases, when the rotating sleeve is rotated along a first direction, the slope of the ejection driving portion abuts against the second end of the ejection member, and the height change of the ejection driving portion enables the ejection member to move towards the axial direction of the rotating sleeve.

Preferably, be provided with the second butt portion on the periphery wall of the neighbouring second end of liftout piece, be provided with the confession on the interface outer wall of the one end of base member the second through-hole that the first end of liftout piece passed, the second elastic element cover is established on the liftout piece, the one end butt of second elastic element the second butt portion, the other end butt of second elastic element the outer wall of the second through-hole of base member.

Preferably, the surface on which the first end of the ejector member interacts with the receptacle on the tool attachment plug member is a sloped surface.

Preferably, the rotating sleeve is provided with a plurality of ejection driving parts, the locking mechanism comprises a plurality of ejection assemblies, the plug connector is provided with a plurality of receiving parts, the ejection parts of the ejection assemblies are used for being matched with the receiving parts on the plug connector of the tool accessory in a one-to-one correspondence manner, and the ejection driving parts are used for being matched with the ejection parts of the ejection assemblies in a one-to-one correspondence manner.

Preferably, the plurality of ejection assemblies are uniformly distributed along the circumferential direction of the rotating sleeve.

Preferably, the locking mechanism further comprises a fixing assembly, the fixing assembly comprises a fixing piece and at least one electrical output piece, the fixing piece is installed on the end face, facing the tool accessory, of the rotating sleeve, so that the rotating sleeve is rotatably arranged at an interface of one end of the base body, and the electrical output piece penetrates through the fixing piece and is used for achieving electrical connection between the host machine and the tool accessory.

Compared with the prior art, the beneficial effects of the utility model include at least:

the utility model discloses an among the electric tool, through set up locking mechanism on the host computer, the plug connector on locking mechanism and the instrument annex cooperatees, can conveniently lock the instrument annex on locking mechanism, through the rotation of rotating the cover, can conveniently remove the locking to the instrument annex.

Drawings

Fig. 1 is a schematic structural view of a main body and a tool accessory of an electric tool according to an embodiment of the present invention before connection.

Fig. 2 is a schematic structural view of an electric power tool according to an embodiment of the present invention, which has a partially exploded structure.

Fig. 3 is an enlarged view of a portion S in fig. 2.

Fig. 4 is a schematic structural view of the rotating sleeve according to the embodiment of the present invention.

Fig. 5 is a schematic structural view of the rotating sleeve, the locking member and the ejector according to the embodiment of the present invention.

Fig. 6 is an exploded view of the locking assembly of the embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a lock member according to an embodiment of the present invention.

Fig. 8 is an exploded view of an ejection assembly according to an embodiment of the present invention.

Fig. 9 is a schematic structural view of the ejector according to the embodiment of the present invention.

Fig. 10 is a schematic partial cross-sectional view of a host locking tool accessory according to an embodiment of the present invention.

Fig. 11 is a schematic partial cross-sectional view of a tool attachment according to an embodiment of the present invention as it exits from a host computer.

In the figure: 10. a host; 11. a substrate; 111. a housing; 112. a trigger; 113. an interface; 1131. a first through hole; 1132. a second through hole; 114. an installation part; 121. rotating the sleeve; 1211. an unlocking drive section; 1212. an ejection drive section; 122. a locking assembly; 1221. a locking member; 1221a, a first abutment; 1221b, a recess; 1222. a first elastic element; 1223. an elastic reset element; 123. ejecting the assembly; 1231. ejecting the part; 1231a, a second abutment; 1232. a second elastic element; 124. a fixing assembly; 1241. a fixing member; 1242. an electrical output; 20. a tool accessory; 21. a plug-in unit; 211. a joint portion; 212. a bearing part.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.

The words for expressing the position and direction described in the present invention are all the explanations given by taking the drawings as examples, but can be changed according to the needs, and the changes are all included in the protection scope of the present invention.

Referring to fig. 1 to 11, the present invention provides an electric tool, which includes a main body 10 and a tool attachment 20, wherein the main body 10 can be used for providing power for driving the tool attachment 20 to work, control signals, etc., the tool attachment 20 is used for realizing tool attributes of the electric tool, such as cutting, drilling, inflating, etc., and the tool attachment 20 includes but is not limited to a scissor head attachment of electric scissors, a drill head attachment of an electric drill, and a pump head attachment of an air pump for inflating.

Referring to fig. 1, the tool attachment 20 has an insert 21, the insert 21 of the present embodiment extends outward from an end face of the tool attachment 20, and the insert 21 may be used for mechanical connection between the tool attachment 20 and the main body 10, and may also be used for receiving a rotational force or other driving force of the main body 10.

The main body 10 comprises a base 11 and a locking mechanism, wherein the locking mechanism comprises a rotating sleeve 121 and a locking assembly 122, and further comprises an ejection assembly 123 and/or a fixing assembly 124.

Referring to fig. 1, the base 11 may include a housing 111 and a trigger 112, in some embodiments of the present invention, the base 11 further includes one or more components of a power source or a battery (not shown) located in the housing 111, a motor (not shown), a transmission mechanism (not shown), an output shaft (not shown) and a control circuit (not shown), the housing 111 is formed with a handle, a portion of the trigger 112 is exposed from the handle to control the start and stop of the host 10, the power source or the battery provides power for the motor, the motor is connected to the transmission mechanism, the rotational power or other driving force of the motor may be transmitted to the output shaft through the transmission mechanism, the output shaft may provide a rotational force or other driving force outwards, and the specific connection structure of the components in the base 11 may adopt the prior art, which is not described herein.

Referring to fig. 2 and 3, the rotating sleeve 121 is rotatably disposed at the interface 113 at one end of the base 11, and the interface 113 at one end of the base 11 can be partially accommodated in the rotating sleeve 121, in some embodiments of the present invention, the fixing component 124 includes a fixing member 1241 and at least one electrical output member 1242, the fixing member 1241 in this example is a circular sheet structure, the electrical output member 1242 is an electrical output copper pillar, the fixing member 1241 is installed on an end surface of the rotating sleeve 121 facing the tool accessory 20, so that the rotating sleeve 121 is rotatably disposed at the interface 113 at one end of the base 11, and the electrical output member 1242 is inserted into the fixing member 1241 for electrically connecting the main unit 10 and the tool accessory 20.

Referring to fig. 4 to 7, the rotating sleeve 121 is provided with an unlocking driving portion 1211, and in some embodiments, the unlocking driving portion 1211 is a slope having a gradually increasing height and is disposed on an inner wall of the rotating sleeve 121 and extends in a circumferential direction of the rotating sleeve 121. Latch assembly 122 includes mating latch 1221 and first resilient member 1222. in some embodiments, latch 1221 is generally cylindrical in shape, latch 1221 has first and second opposite ends, and the first end of latch 1221 is configured to engage engagement portion 211 of connector 21 of tool attachment 20 and lock tool attachment 20 to the latch, and engagement portion 211 of connector 21 is, for example, a groove. The lock member 1221 is provided with a recess 1221b in which at least a part of the unlocking driving portion 1211 is accommodated, the recess 1221b is provided on, for example, an outer peripheral wall of the lock member 1221 adjacent to the second end, when the unlocking driving portion 1211 is inclined, the rotating sleeve 121 is rotated in the first direction, and the lock member 1221 is moved away from the axial direction of the rotating sleeve 121 by a height change of the unlocking driving portion 1211.

In one embodiment, a first abutting portion 1221a is disposed on an outer peripheral wall of the locking member 1221 adjacent to the first end, the first abutting portion 1221a is, for example, a protrusion or a bump formed on an outer peripheral wall of the locking member 1221 adjacent to the first end, a first through hole 1131 through which the first end of the locking member 1221 passes is disposed on an outer peripheral wall of the interface 113 at one end of the base 11, the first end of the locking member 1221 passes through the first through hole 1131 and faces an axis of the rotating sleeve 121, a mounting portion 114 is disposed outside the interface 113 at one end of the base 11, the mounting portion 114 corresponds to the first through hole 1131 in a radial direction, the mounting portion 114 is, for example, a notched flap formed outside the outer peripheral wall of the interface 113 of the base 11, a second end of the locking member 1221 passes through a notch of the mounting portion 114 in the radial direction, a first elastic member, for example, a compression spring, a first elastic member 1222 is sleeved on the locking member 1221, one end of the first elastic member 1222 abuts against the first abutting portion 1221a, the other end of the first elastic element 1222 abuts against the mounting portion 114, and the first elastic element 1222 has an elastic force for driving the first end of the locking member 1221 to move in the axial direction of the rotating sleeve 121 after being compressed.

The main body 10 mounts and locks the plug-in type tool attachment 20 in such a manner that when the plug-in piece 21 of the tool attachment 20 is inserted into the inner hole of the rotary sleeve 121, the first end of the locking piece 1221 is engaged with the engaging portion 211 of the plug-in piece 21 of the tool attachment 20, and the tool attachment 20 is locked to the locking mechanism. Specifically, in some embodiments of the present invention, when the plug 21 of the tool attachment 20 is inserted into the inner hole of the rotating sleeve 121, the outer peripheral surface of the plug 21 of the tool attachment 20 contacts the first end of the locking member 1221 and drives the first end of the locking member 1221 to move away from the axial direction of the rotating sleeve 121, and the elastic force of the first elastic element 1222 driving the locking piece 1221 to reset is increased, after the front end of the plug-in part 21 of the tool attachment 20 is inserted into the inner hole of the rotating sleeve 121, when the first end of the locking member 1221 is aligned with the position of the engagement portion 211 on the plug 21 of the tool attachment 20, under the action of the elastic force of the first elastic element 1222, the first elastic element 1222 drives the first end of the locking element 1221 to be inserted into the engaging portion 211 of the plug 21 of the tool attachment 20, and the two are engaged, so as to lock the tool attachment 20 on the locking mechanism, and achieve the mechanical connection between the main body 10 and the tool attachment 20.

When the rotating sleeve 121 is rotated in the first direction, the unlocking driving portion 1211 drives the locking member 1221 to move away from the axial direction of the rotating sleeve 121, and increases the elastic force of the first elastic element 1222 to drive the locking member 1221 to return, so that the first end of the locking member 1221 is disengaged from the engaging portion 211 of the plug-in connector 21 of the tool attachment 20, and the tool attachment 20 is unlocked. Specifically, in some embodiments of the present invention, when the rotating sleeve 121 is rotated in the first direction, for example, clockwise or counterclockwise, a portion of the slope of the unlocking driving portion 1211 is received in the recess 1221b of the locking member 1221, and the rotating sleeve 121 continues to be rotated, because the height of the slope of the unlocking driving portion 1211 gradually increases, the unlocking driving portion 1211 drives the locking member 1221 to gradually move away from the axial direction of the rotating sleeve 121 and compress the first elastic element 1222, the elastic force of the first elastic element 1222 to drive the locking member 1221 to return increases, the locking member 1221 returns to the original position, that is, the locking member 1221 moves toward the axial direction of the rotating sleeve 121, and after the locking member 1221 moves away from the axial direction of the rotating sleeve 121, the first end of the locking member 1221 withdraws from the engaging portion 211 on the plug 21 of the tool attachment 20, so as to release the locking of the tool attachment 20 by the host 10, the tool attachment 20 can be manually removed to effect release of the mechanical connection between the host 10 and the tool attachment 20.

The utility model discloses some embodiments, the first end of locking piece 1221 has the wedge structure, when the plug connector 21 of tool attachment 20 inserts in the hole of rotating sleeve 121, the skew wall of the wedge structure of the first end of locking piece 1221 is towards the plug connector 21 of tool attachment 20, the front end of the plug connector 21 of tool attachment 20 can push up the skew wall of the wedge structure of the first end of locking piece 1221 to the hole of rotating sleeve 121, be favorable to the plug connector 21 of tool attachment 20 to drive the first end of locking piece 1221 and move to the axis direction of rotating sleeve 121 dorsad, can avoid the first end of locking piece 1221 to block the insertion of the plug connector 21 of tool attachment 20.

In an embodiment, referring to fig. 2, the periphery of the plug 21 of the tool attachment 20 facing the front end face of the locking mechanism has a chamfered structure. When the plug-in part 21 of the tool accessory 20 is inserted into the inner hole of the rotating sleeve 121, the chamfer structure of the front end face of the plug-in part 21 of the tool accessory 20 is in face-to-face contact with the inclined wall of the wedge structure of the first end of the locking piece 1221, so that the plug-in part 21 of the tool accessory 20 drives the first end of the locking piece 1221 to move back to the axial direction of the rotating sleeve 121, and the chamfer structure of the front end face of the plug-in part 21 of the tool accessory 20 has a better guiding effect.

In one embodiment, referring to fig. 10, the engagement portion 211 of the plug 21 of the tool attachment 20 is a wedge-shaped slot that matches the wedge-shaped structure of the first end of the locking member 1221, and the engagement portion 211 of the structure can securely lock the tool attachment 20 to the host computer 10.

In some embodiments of the present invention, referring to fig. 2, the locking assembly 122 further includes an elastic reset element 1223 disposed in the rotating sleeve 121, and when the rotating sleeve 121 is rotated along the first direction, the elastic force of the elastic reset element 1223 for driving the rotating sleeve 121 to reset is increased. Specifically, the elastic restoring element 1223 is, for example, a restoring torsion spring, and when the rotating sleeve 121 is rotated in the first direction, the elastic force of the restoring torsion spring for restoring the rotating sleeve 121 is increased, and when the tool attachment 20 is removed and the force for rotating the rotating sleeve 121 in the first direction is removed, the rotating sleeve 121 is rotated in the direction opposite to the first direction by the restoring torsion spring to restore.

In some embodiments of the present invention, referring to fig. 5 and 10, the rotating sleeve 121 is provided with a plurality of unlocking driving portions 1211, the locking mechanism includes a plurality of locking assemblies 122, the plurality of locking assemblies 122 are preferably arranged along the circumferential uniform distribution of the rotating sleeve 121, the locking member 1221 of the locking assembly 122 is used for being matched with the engaging portion 211 of the plug connector 21 of the tool accessory 20 in a one-to-one manner, and the unlocking driving portion 1211 is used for being matched with the locking member 1221 of the locking assembly 122 in a one-to-one manner. In fig. 5 and 10, the rotating sleeve 121 is provided with two unlocking driving portions 1211, the locking mechanism includes two locking assemblies 122 symmetrically arranged along the axis of the rotating sleeve 121, the plug-in unit 21 of the tool attachment 20 is provided with two engaging portions 211, locking members 1221 of the locking assemblies 122 are fitted to the engaging portions 211 of the plug-in unit 21 in a one-to-one correspondence manner, and recesses 1221b of the locking members 1221 of the locking assemblies 122 are fitted to the unlocking driving portions 1211 in a one-to-one correspondence manner. By providing a plurality of locking assemblies 122, locking of the host 10 and the tool attachment 20 can be achieved more stably.

In some embodiments of the present invention, referring to fig. 3 to 5, 8, 9 and 11, the rotating sleeve 121 is provided with an ejection driving portion 1212, and the ejection driving portion 1212 is preferably a slope having a gradually increasing height, which is provided on the inner wall of the rotating sleeve 121 and extends along the circumferential direction of the rotating sleeve 121. The plug connector 21 is provided with a receiving part 212, the locking mechanism further comprises an ejection assembly 123, the ejection assembly 123 can be arranged in the rotating sleeve 121, and the ejection assembly 123 comprises an ejection part 1231 and a second elastic element 1232 which are matched with each other. In some embodiments of the present invention, the ejector 1231 is generally cylindrical, the ejector 1231 has a first end and a second end opposite to each other, and the first end of the ejector 1231 is used for applying an acting force to the receiving portion 212 of the plug 21 to drive the plug 21 of the tool accessory 20 to exit from the rotating sleeve 121. When the push-out driving portion 1212 is inclined, the height change of the push-out driving portion 1212 moves the push-out member 1231 in the axial direction of the rotating sleeve 121 when the rotating sleeve 121 is rotated in the first direction.

In a specific embodiment, a second abutting portion 1231a is disposed on the outer peripheral wall of the ejector 1231 adjacent to the second end, the second abutting portion 1231a is, for example, a protrusion or a bump formed on the outer peripheral wall of the ejector 1231 adjacent to the second end, a second through hole 1132 through which the first end of the ejector 1231 passes is disposed on the outer wall of the interface 113 at one end of the base 11, the first end of the ejector 1231 passes through the second through hole 1132 and faces the axis of the rotating sleeve 121, the second elastic element 1232 is, for example, a compression spring, the second elastic element 1232 is sleeved on the ejector 1231, one end of the second elastic element 1232 abuts against the second abutting portion 1231a, the other end of the second elastic element 1232 abuts against the outer wall of the second through hole 1132 of the base 11, and the second elastic element 1232 has an elastic force that drives the first end of the ejector 1231 to move back to the axis direction of the rotating sleeve 121 after being compressed.

When the main body 10 unlocks the tool attachment 20, the ejection assembly 123 ejects the tool attachment 20 by rotating the rotating sleeve 121 in the first direction, the ejection driving portion 1212 drives the ejector 1231 to move toward the axial direction of the rotating sleeve 121, and increases the elastic force of the second elastic element 1232 to drive the ejector 1231 to return, so that the first end of the ejector 1231 applies a force to the receiving portion 212 of the plug member 21 of the tool attachment 20 to drive the plug member 21 of the tool attachment 20 to withdraw from the rotating sleeve 121.

Specifically, in some embodiments of the present invention, when the rotating sleeve 121 is rotated along the first direction, the slope of the ejecting driving portion 1212 contacts with the end surface of the second end of the ejecting member 1231, the rotating sleeve 121 continues to be rotated, because the height of the slope of the ejecting driving portion 1212 gradually increases, the ejecting driving portion 1212 drives the ejecting member 1231 to gradually move toward the axial direction of the rotating sleeve 121 and compress the second elastic element 1232, the elastic force of the second elastic element 1232 driving the ejecting member 1231 to reset increases, the resetting of the ejecting member 1231 means that the ejecting member 1231 moves away from the axial direction of the rotating sleeve 121, after the ejecting member 1231 moves toward the axial direction of the rotating sleeve 121, the first end of the ejecting member 1231 contacts with the receiving portion 212 on the plug member 21 of the tool accessory 20 and applies an acting force to the receiving portion 212, the acting force drives the plug member 21 of the tool accessory 20 to withdraw from the rotating sleeve 121, so as to eject the plug member 21 of the tool accessory 20 out of the rotating sleeve 121, during the release of the mechanical connection of the main body 10 and the tool attachment 20, the tool attachment 20 is simultaneously ejected.

In some embodiments of the present invention, the surface of the interaction between the first end of the ejector 1231 and the receiving portion 212 of the plug connector 21 of the tool accessory 20 is an inclined surface, and when the rotating sleeve 121 is rotated along the first direction, the first end of the ejector 1231 contacts with the receiving portion 212 of the plug connector 21 of the tool accessory 20 and applies an acting force to the receiving portion 212, so that the inclined surface structure is more favorable for the ejector 1231 to smoothly eject the plug connector 21 of the tool accessory 20.

The utility model discloses some embodiments, the rotating sleeve 121 is provided with a plurality of ejecting drive portions 1212, locking mechanism includes a plurality of ejecting subassemblies 123, a plurality of ejecting subassemblies 123 are preferred to be set up along the circumference evenly distributed of rotating sleeve 121, be provided with a plurality of accepting portions 212 on the plug connector 21, ejecting 1231 of ejecting subassembly 123 is used for cooperateing with accepting portion 212 on the plug connector 21 of tool accessory 20 one-to-one, ejecting drive portion 1212 is used for cooperateing with ejecting 1231 of ejecting subassembly 123 one-to-one. In fig. 3, 5 and 11, the rotating sleeve 121 is provided with two ejection driving portions 1212, the locking mechanism includes two ejection assemblies 123 symmetrically arranged along the axis of the rotating sleeve 121, the plug connector 21 of the tool accessory 20 is provided with two receiving portions 212, the ejection portions 1231 of the ejection assemblies 123 are matched with the receiving portions 212 on the plug connector 21 in a one-to-one correspondence manner, and the ejection driving portions 1212 are matched with the ejection portions 1231 of the ejection assemblies 123 in a one-to-one correspondence manner. By providing a plurality of ejector members 123, the plug 21 of the tool attachment 20 can be ejected from the rotating sleeve 121 of the main body 10 more stably and smoothly.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments without departing from the spirit and scope of the present invention, and all such changes are intended to be within the scope of the following claims.

Claims

1. A host machine for mounting a tool accessory of the docking type, the tool accessory having a docking member, the host machine comprising: the locking mechanism comprises a rotating sleeve and a locking assembly, the rotating sleeve is rotatably arranged at an interface at one end of the base body, the rotating sleeve is provided with an unlocking driving part, and the locking assembly comprises a locking piece and a first elastic element which are matched with each other;

2. The host machine of claim 1, wherein the locking assembly further comprises a resilient return element disposed within the rotating sleeve, wherein upon rotating the rotating sleeve in a first direction, a spring force of the resilient return element urging the rotating sleeve to return increases.

3. The mainframe according to claim 1, wherein the unlocking driving portion is a slope which is disposed on an inner wall of the rotating sleeve and extends along a circumferential direction of the rotating sleeve, and a height of the slope increases gradually, a concave portion for accommodating at least a portion of the unlocking driving portion is disposed on the lock member, and when the rotating sleeve is rotated along a first direction, a height change of the unlocking driving portion causes the lock member to move away from an axial direction of the rotating sleeve.

4. The mainframe according to claim 1, wherein a first abutting portion is disposed on an outer peripheral wall of the lock member adjacent to the first end, a first through hole for the first end of the lock member to pass through is disposed on an interface outer wall of one end of the base, a mounting portion is disposed outside the interface outer wall of one end of the base, the first elastic element is sleeved on the lock member, one end of the first elastic element abuts against the first abutting portion, and the other end of the first elastic element abuts against the mounting portion.

5. The main unit according to claim 1, wherein the rotary sleeve is provided with a plurality of unlocking driving portions, the locking mechanism comprises a plurality of locking assemblies, locking members of the locking assemblies are used for being matched with the engagement portions of the plug-in connector of the tool accessory in a one-to-one correspondence manner, and the unlocking driving portions are used for being matched with the locking members of the locking assemblies in a one-to-one correspondence manner.

6. The host machine of claim 5, wherein the plurality of locking assemblies are evenly distributed along a circumference of the rotating sleeve.

7. A power tool comprising a main body and a tool accessory, wherein the main body is as claimed in any one of claims 1 to 6, and the tool accessory has a socket connector.

8. The power tool of claim 7, wherein the first end of the locking member has a wedge configuration, and wherein the sloped wall of the wedge configuration of the first end of the locking member faces the tool attachment insert when the tool attachment insert is inserted into the internal bore of the rotating sleeve.

9. The power tool of claim 8, wherein a peripheral edge of the tool attachment insert facing the front face of the locking mechanism has a chamfered configuration.

10. The power tool of claim 8 wherein the engagement portion on the plug member of the tool attachment is a wedge-shaped groove that mates with the wedge-shaped structure of the first end of the locking member.

11. The electric tool according to claim 7, wherein the rotating sleeve is provided with an ejection driving portion, the plug connector is provided with a receiving portion, the locking mechanism further comprises an ejection assembly, the ejection assembly comprises an ejection member and a second elastic element which are matched with each other, when the rotating sleeve is rotated in a first direction, the ejection driving portion drives the ejection member to move towards the axial direction of the rotating sleeve and increases the elastic force of the second elastic element driving the ejection member to reset, and the first end of the ejection member applies an acting force to the receiving portion of the plug connector of the tool accessory to drive the plug connector of the tool accessory to withdraw from the rotating sleeve.

12. The power tool according to claim 11, wherein the ejector driving portion is a slope having a gradually increasing height and provided on an inner wall of the rotary sleeve and extending in a circumferential direction of the rotary sleeve, the slope of the ejector driving portion abuts against the second end of the ejector when the rotary sleeve is rotated in the first direction, and the change in height of the ejector driving portion moves the ejector toward the axial direction of the rotary sleeve.

13. The power tool according to claim 11, wherein a second abutting portion is provided on an outer peripheral wall of the ejector member adjacent to the second end, a second through hole through which the first end of the ejector member passes is provided on an interface outer wall of one end of the base member, the second elastic member is fitted over the ejector member, one end of the second elastic member abuts against the second abutting portion, and the other end of the second elastic member abuts against an outer wall of the second through hole of the base member.

14. The power tool of claim 11, wherein the surface on which the first end of the ejector member interacts with the receptacle on the tool attachment insert is a ramped surface.

15. The power tool of claim 11, wherein the rotating sleeve is provided with a plurality of ejection driving portions, the locking mechanism comprises a plurality of ejection assemblies, the connector is provided with a plurality of receiving portions, the ejection members of the ejection assemblies are configured to be engaged with the receiving portions of the connector of the tool accessory in a one-to-one correspondence, and the ejection driving portions are configured to be engaged with the ejection members of the ejection assemblies in a one-to-one correspondence.

16. The power tool of claim 14, wherein the plurality of ejection assemblies are evenly distributed along a circumference of the rotating sleeve.

17. The power tool of claim 7, wherein the locking mechanism further comprises a fixing assembly, the fixing assembly comprises a fixing member and at least one electrical output member, the fixing member is mounted on an end surface of the rotating sleeve facing the tool accessory, so that the rotating sleeve is rotatably disposed at an interface of one end of the base body, and the electrical output member is disposed through the fixing member and is used for electrically connecting the main machine and the tool accessory.