CN112743492B - Main unit and electric tool - Google Patents
Main unit and electric tool Download PDFInfo
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- CN112743492B CN112743492B CN202011328410.0A CN202011328410A CN112743492B CN 112743492 B CN112743492 B CN 112743492B CN 202011328410 A CN202011328410 A CN 202011328410A CN 112743492 B CN112743492 B CN 112743492B
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- rotating sleeve
- locking
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- ejection
- plug
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- 230000007246 mechanism Effects 0.000 claims abstract description 31
- 230000000712 assembly Effects 0.000 claims description 29
- 238000000429 assembly Methods 0.000 claims description 29
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 5
- 230000004308 accommodation Effects 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010413 gardening Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/02—Construction of casings, bodies or handles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Portable Power Tools In General (AREA)
- Gripping On Spindles (AREA)
Abstract
The invention discloses a host and an electric tool. The host computer includes: the locking mechanism comprises a rotating sleeve and a locking component, the rotating sleeve is rotatably arranged at an interface of one end of the base, the rotating sleeve is provided with an unlocking driving part, and the locking component comprises a locking piece and a first elastic element which are matched; 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 combined 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 rotates along the first direction, the unlocking driving part drives the locking piece to move back to the axis direction of the rotating sleeve, and increases the elastic force of the first elastic element for driving the locking piece to reset, and the first end of the locking piece is separated from the joint part on the plug connector of the tool accessory and the locking of the tool accessory is released. The electric tool can conveniently lock and unlock the tool accessories.
Description
Technical Field
The invention relates to the technical field of electric tools, in particular to a host and an electric tool.
Background
The electric tool has the characteristics of convenience in carrying, simplicity in operation, multiple functions and the like, can greatly lighten the labor intensity, improve the working efficiency, realize the mechanization of manual operation, is widely applied to the fields of building, 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 most existing electric tools are fixedly connected together, and the main machine and the tool head of the electric tools cannot be easily disassembled.
Chinese patent publication No. CN1241714C discloses a hand-held tool machine with removable tool holder, chinese patent publication No. CN105880685B discloses a power tool, chinese patent publication No. CN206748357U discloses an electric tool with easy replacement function, and these prior arts disclose schemes of manual insertion and automatic clamping or manual switch pressing and then disassembly.
Disclosure of Invention
The invention provides a host machine and an electric tool with novel structures, which can easily realize separation between the host machine and the tool accessory in a rotating mode when the tool accessory is disassembled after the connection of the host machine and the tool accessory.
The invention is realized by adopting the following technical scheme:
a host for mounting a plug-in tool accessory having a plug-in connector, the host comprising: the locking mechanism comprises a rotating sleeve and a locking component, the rotating sleeve is rotatably arranged at an interface of one end of the base, the rotating sleeve is provided with an unlocking driving part, and the locking component comprises a locking piece and a first elastic element which are matched;
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 combined 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 rotates along a first direction, the unlocking driving part drives the locking piece to move back to the axial 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 the locking of the tool accessory is released.
Preferably, the locking assembly further includes an elastic restoring element disposed in the rotating sleeve, and when the rotating sleeve is rotated in a first direction, an elastic force of the elastic restoring element driving the rotating sleeve to restore 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 direction of the rotating sleeve, the locking piece is provided with a concave part for at least partial accommodation of the unlocking driving part, and when the rotating sleeve rotates along a first direction, the height change of the unlocking driving part enables the locking piece to move back to the axial direction of the rotating sleeve.
Preferably, a first abutting portion is arranged on the outer peripheral wall, adjacent to the first end, of the locking piece, a first through hole for the first end of the locking piece to pass through is arranged on the outer wall of the interface at one end of the base body, an installation portion is arranged outside the outer wall of the interface at one end of the base body, the locking piece is sleeved with a first elastic element, 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 installation portion.
Preferably, the rotating sleeve is provided with a plurality of unlocking driving parts, the locking mechanism comprises a plurality of locking components, locking pieces of the locking components are used for being matched with joint parts on the plug connector of the tool accessory in a one-to-one correspondence manner, and the unlocking driving parts are used for being matched with the locking pieces of the locking components in a one-to-one correspondence manner.
Preferably, the plurality of locking assemblies are uniformly distributed along the circumference of the rotating sleeve.
The electric tool comprises a host machine and a tool accessory, and is characterized in that the host machine is the host machine, and the tool accessory is provided with a plug connector.
Preferably, the first end of the locking member has a wedge-shaped structure, and the inclined wall of the wedge-shaped structure of the first end of the locking member faces the socket of the tool accessory when the socket of the tool accessory is inserted into the inner hole of the rotating sleeve.
Preferably, the periphery of the plug part of the tool attachment facing the front end face of the locking mechanism has a chamfer.
Preferably, the engagement portion on the plug of the tool attachment is a wedge-shaped groove that mates with the wedge-shaped structure of the first end of the locking member.
Preferably, the rotating sleeve is provided with an ejection driving part, the plug connector is provided with a receiving part, the locking mechanism further comprises an ejection assembly, the ejection assembly comprises an ejection part and a second elastic element which are matched with each other, when the rotating sleeve rotates along a first direction, the ejection driving part drives the ejection part to move towards the axis direction of the rotating sleeve, the second elastic element is increased to drive the ejection part to reset elastic force, and the first end of the ejection part applies acting force to the receiving part on the plug connector of the tool accessory to drive the plug connector of the tool accessory to withdraw from the rotating sleeve.
Preferably, the ejection driving portion is a slope which is disposed on an inner wall of the rotating sleeve and gradually increases in height along a circumferential direction of the rotating sleeve, and when the rotating sleeve rotates in 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 causes the ejection member to move toward an axial direction of the rotating sleeve.
Preferably, a second abutting portion is arranged on the outer peripheral wall, adjacent to the second end, of the ejection piece, a second through hole for the first end of the ejection piece to pass through is arranged on the outer wall of the interface at one end of the base body, the second elastic element is sleeved on the ejection piece, one end of the second elastic element abuts against the second abutting portion, and the other end of the second elastic element abuts against the outer wall of the second through hole of the base body.
Preferably, the surface of the ejector that interacts with the abutment on the plug of the tool attachment is a bevel.
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 component, the fixing component comprises a fixing piece and at least one electric output piece, the fixing piece is mounted on the end face of the rotating sleeve, which faces the tool accessory, so that the rotating sleeve is rotatably arranged at an interface of one end of the base body, and the electric output piece penetrates through the fixing piece and is used for realizing electric connection between the host machine and the tool accessory.
Compared with the prior art, the invention has the beneficial effects that at least:
in the electric tool, the locking mechanism is arranged on the host machine and is matched with the plug connector on the tool accessory, so that the tool accessory can be conveniently locked on the locking mechanism, and the locking of the tool accessory can be conveniently released through the rotation of the rotating sleeve.
Drawings
Fig. 1 is a schematic diagram of a power tool according to an embodiment of the present invention before a host and a tool accessory are connected.
Fig. 2 is a schematic view of a power tool with a partially exploded structure according to an embodiment of the present invention.
Fig. 3 is an enlarged view of the S portion in fig. 2.
Fig. 4 is a schematic structural view of a rotating sleeve according to an embodiment of the present invention.
Fig. 5 is a schematic structural view of the rotating sleeve and the locking member, and the ejector member according to the embodiment of the present invention.
FIG. 6 is an exploded view of a locking assembly of an embodiment of the present invention.
Fig. 7 is a schematic structural view of a locking member according to an embodiment of the present invention.
Fig. 8 is an exploded view of an ejector assembly according to an embodiment of the present invention.
Fig. 9 is a schematic structural view of an ejector according to an embodiment of the present invention.
FIG. 10 is a schematic partial cross-sectional view of a host machine in accordance with an embodiment of the present invention in locking a tool attachment.
FIG. 11 is a schematic partial cross-sectional view of an embodiment of the present invention with a tool attachment withdrawn from a host.
In the figure: 10. a host; 11. a base; 111. a housing; 112. a trigger; 113. an interface; 1131. a first through hole; 1132. a second through hole; 114. a mounting part; 121. a rotating sleeve; 1211. an unlock driving section; 1212. an ejection driving part; 122. a locking assembly; 1221. a locking member; 1221a, a first abutment; 1221b, recesses; 1222. a first elastic element; 1223. an elastic reset element; 123. an ejection assembly; 1231. an ejector; 1231a, a second abutting portion; 1232. a second elastic element; 124. a fixing assembly; 1241. a fixing member; 1242. an electrical output; 20. a tool attachment; 21. a plug-in component; 211. a joint; 212. and a receiving part.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many 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 the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus a repetitive description thereof will be omitted.
The words expressing the positions and directions described in the present invention are described by taking the drawings as an example, but can be changed according to the needs, and all the changes are included in the protection scope of the present invention.
Referring to fig. 1-11, the present invention provides a power tool comprising a host 10 and a tool accessory 20, the host 10 being operable to provide power, control signals, etc. for driving the tool accessory 20 into operation, the tool accessory 20 being operable to effect tool properties of the power tool, such as for cutting, clipping, drilling, inflating, etc., the tool accessory 20 including, but not limited to, a scissor head accessory for electric scissors, a drill head accessory for an electric drill, a pump head accessory for an air pump for inflating.
Referring to fig. 1, the tool attachment 20 has a socket 21, the socket 21 of the present embodiment extending outwardly from one end face of the tool attachment 20, the socket 21 being usable for mechanical connection between the tool attachment 20 and the host 10, and also for receiving rotational or other driving forces of the host 10.
The host 10 includes a base 11 and a locking mechanism including a rotating sleeve 121 and a locking assembly 122, and may also include an ejector assembly 123 and/or a stationary assembly 124.
Referring to fig. 1, the base 11 may include a housing 111 and a trigger 112, and in some embodiments of the present invention, the base 11 may further include one or more components of a power source or battery (not shown), a motor (not shown), a transmission mechanism (not shown), an output shaft (not shown), and a control circuit (not shown) located in the housing 111, the housing 111 is formed with a handle, a portion of the trigger 112 is exposed from the handle to control start and stop of the host 10, the power source or battery provides power to the motor, the motor is connected to the transmission mechanism, 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 rotational force or other driving force to the outside, and specific connection structures of the components in the base 11 may be implemented in the prior art, which will not be repeated 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, the interface 113 at one end of the base 11 may be partially accommodated in the rotating sleeve 121, and in some embodiments of the present invention, the fixing assembly 124 includes a fixing member 1241 and at least one electrical output member 1242, the fixing member 1241 in this example has a circular sheet structure, the electrical output member 1242 is an electrical output copper pillar, the fixing member 1241 is mounted on an end surface of the rotating sleeve 121 facing the tool attachment 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 disposed through the fixing member 1241 for achieving electrical connection between the host 10 and the tool attachment 20.
Referring to fig. 4 to 7, the rotation sleeve 121 is provided with an unlocking driving portion 1211, and in some embodiments of the present invention, the unlocking driving portion 1211 is a slope provided on an inner wall of the rotation sleeve 121 and gradually increasing in height along a circumferential direction of the rotation sleeve 121. The locking assembly 122 includes a mating locking member 1221 and a first resilient element 1222. In some embodiments of the invention, the locking member 1221 is generally cylindrical in overall configuration, the locking member 1221 has opposite first and second ends, the first end of the locking member 1221 is configured to engage the engagement portion 211 of the plug member 21 of the tool attachment 20 and lock the tool attachment 20 to the locking mechanism, and the engagement portion 211 of the plug member 21 is, for example, a recess. The locking 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 being provided, for example, on an outer peripheral wall of the locking member 1221 adjacent to the second end, and when the unlocking driving portion 1211 is a slope, the rotation sleeve 121 is rotated in the first direction, and the change in height of the unlocking driving portion 1211 moves the locking member 1221 in the axial direction facing away from the rotation sleeve 121.
In a specific 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 the 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 wall of the interface 113 at one end of the base body 11, the first end of the locking member 1221 passes through the first through hole 1131 and faces an axis of the rotation sleeve 121, a mounting portion 114 is disposed outside the outer wall of the interface 113 at one end of the base body 11, the mounting portion 114 corresponds to the first through hole 1131 in a radial direction, for example, a notched baffle plate formed outside the outer wall of the interface 113 at the base body 11, a second end of the locking member 1221 passes through a notch of the mounting portion 114 in a radial direction, a first elastic member 1222 is, for example, a compression spring is disposed on an outer wall of the interface 113 at one end of the base body 11, one end of the first elastic member 1222 abuts the first abutting portion 1a, the other end of the first elastic member 1222 abuts the first abutting portion 1a, the first elastic member 1222 is moved in a radial direction of the first through hole 1222, and the first elastic member 1222 has a compression force 1222 is driven by the first elastic member 1221 toward the rotation sleeve 121.
The process of installing and locking the plug-type tool attachment 20 by the host 10 is that when the plug-in member 21 of the tool attachment 20 is inserted into the inner hole of the rotation sleeve 121, the first end of the locking member 1221 engages the engagement portion 211 on the plug-in member 21 of the tool attachment 20 and locks the tool attachment 20 to the locking mechanism. Specifically, in some embodiments of the present invention, when the plug 21 of the tool accessory 20 is inserted into the inner hole of the rotating sleeve 121, the outer peripheral surface of the plug 21 of the tool accessory 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 member 1222 for driving the locking member 1221 to reset is increased, after the front end of the plug 21 of the tool accessory 20 is continuously 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 engaging portion 211 on the plug 21 of the tool accessory 20, the first elastic member 1222 is driven by the elastic force of the first elastic member 1222 to insert the first end of the locking member 1221 into the engaging portion 211 on the plug 21 of the tool accessory 20, so that the tool accessory 20 is locked on the locking mechanism, and the mechanical connection between the host 10 and the tool accessory 20 is achieved.
When the main body 10 releases the locking of the tool accessory 20, the unlocking driving part 1211 drives the locking piece 1221 to move back to the axial direction of the rotating sleeve 121 when the rotating sleeve 121 is rotated in the first direction, and increases the elastic force of the first elastic element 1222 for driving the locking piece 1221 to reset, the first end of the locking piece 1221 is separated from the engaging part 211 on the plug-in piece 21 of the tool accessory 20, and the locking of the tool accessory 20 is released. 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 accommodated 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 increases gradually, the unlocking driving portion 1211 drives the locking member 1221 to move gradually away from the axis direction of the rotating sleeve 121, and compresses the first elastic element 1222, the elastic force of the first elastic element 1222 for driving the locking member 1221 to reset increases, and the resetting of the locking member 1221 means that the locking member 1221 moves toward the axis direction of the rotating sleeve 121, and after the locking member 1221 moves away from the axis direction of the rotating sleeve 121, the first end of the locking member 1221 withdraws from the engaging portion 211 on the plug member 21 of the tool accessory 20, thereby releasing the locking of the tool accessory 20 by the host 10, and the mechanical connection between the host 10 and the tool accessory 20 can be removed manually.
In some embodiments of the present invention, the first end of the locking member 1221 has a wedge structure, and when the plug member 21 of the tool attachment 20 is inserted into the inner hole of the rotating sleeve 121, the inclined wall of the wedge structure of the first end of the locking member 1221 faces the plug member 21 of the tool attachment 20, and the front end of the plug member 21 of the tool attachment 20 can push against the inclined wall of the wedge structure of the first end of the locking member 1221 to the inner hole of the rotating sleeve 121, so that the plug member 21 of the tool attachment 20 can drive the first end of the locking member 1221 to move away from the axis direction of the rotating sleeve 121, and the insertion of the plug member 21 of the tool attachment 20 can be prevented from being blocked by the first end of the locking member 1221.
In a specific embodiment, referring to fig. 2, the periphery of the front end face of the plug 21 of the tool attachment 20 facing the locking mechanism has a chamfer structure. When the plug member 21 of the tool attachment 20 is inserted into the inner hole of the rotating sleeve 121, the chamfer structure of the front end surface of the plug member 21 of the tool attachment 20 is in face-to-face contact with the inclined wall of the wedge structure of the first end of the locking member 1221, which is beneficial for the plug member 21 of the tool attachment 20 to drive the first end of the locking member 1221 to move away from the axis direction of the rotating sleeve 121, and the chamfer structure of the front end surface of the plug member 21 of the tool attachment 20 has a better guiding function.
In one embodiment, referring to fig. 10, the engagement portion 211 of the plug member 21 of the tool attachment 20 is a wedge-shaped groove that mates with a 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 machine 10.
In some embodiments of the present invention, referring to fig. 2, the locking assembly 122 further includes an elastic restoring element 1223 disposed within the rotation sleeve 121, and the elastic force of the elastic restoring element 1223 to actuate the rotation sleeve 121 to restore is increased when the rotation sleeve 121 is rotated in the first direction. Specifically, the elastic return member 1223 is, for example, a return torsion spring, and when the rotary sleeve 121 is rotated in the first direction, the elastic force for returning the rotary sleeve 121 by the drive of the return torsion spring increases, and when the tool attachment 20 is removed, the force for rotating the rotary sleeve 121 in the first direction is removed, and the rotary sleeve 121 is rotated in a direction opposite to the first direction by the action of the return torsion spring, thereby achieving the return.
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 parts 1211, the locking mechanism includes a plurality of locking assemblies 122, the plurality of locking assemblies 122 are preferably uniformly distributed along the circumferential direction of the rotating sleeve 121, the locking parts 1221 of the locking assemblies 122 are used for being matched with the engaging parts 211 on the plug connector 21 of the tool accessory 20 in a one-to-one correspondence manner, and the unlocking driving parts 1211 are used for being matched with the locking parts 1221 of the locking assemblies 122 in a one-to-one correspondence 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 disposed along the axis of the rotating sleeve 121, the plug member 21 of the tool accessory 20 is provided with two engaging portions 211, the locking pieces 1221 of the locking assemblies 122 are matched with the engaging portions 211 of the plug member 21 in a one-to-one correspondence, and the concave portions 1221b of the locking pieces 1221 of the locking assemblies 122 are matched with the unlocking driving portions 1211 in a one-to-one correspondence. By providing a plurality of locking assemblies 122, locking of the host 10 and the tool accessory 20 may be more stably achieved.
In some embodiments of the present invention, referring to fig. 3 to 5, 8, 9 and 11, the rotation sleeve 121 is provided with an ejection driving portion 1212, and the ejection driving portion 1212 is preferably a slope provided on an inner wall of the rotation sleeve 121 and gradually increasing in height extending in a circumferential direction of the rotation sleeve 121. The plug 21 is provided with a receiving portion 212, the locking mechanism further includes an ejector assembly 123, the ejector assembly 123 may be disposed in the rotating sleeve 121, and the ejector assembly 123 includes a matched ejector 1231 and a second elastic element 1232. In some embodiments of the present invention, the ejector 1231 has a generally cylindrical structure as a whole, the ejector 1231 has a first end and a second end opposite to each other, and the first end of the ejector 1231 is configured to apply a force to the receiving portion 212 of the connector 21 to drive the connector 21 of the tool attachment 20 to withdraw from the rotating sleeve 121. When the push-out driving portion 1212 is inclined and the rotating sleeve 121 is rotated in the first direction, the height of the push-out driving portion 1212 changes to move the push-out member 1231 in the axial direction of the rotating sleeve 121.
In an embodiment, a second abutting portion 1231a is disposed on an 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 an 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 an 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, and the other end of the second elastic element 1232 abuts against an 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 away from the axis of the rotating sleeve 121 after being compressed.
When the host 10 releases the lock of the tool accessory 20, the ejection assembly 123 ejects the tool accessory 20 by rotating the rotating sleeve 121 in the first direction, and the ejection driving portion 1212 drives the ejection member 1231 to move toward the axis direction of the rotating sleeve 121, and increases the elastic force of the second elastic element 1232 to drive the ejection member 1231 to reset, so that the first end of the ejection member 1231 applies a force to the receiving portion 212 on the plug member 21 of the tool accessory 20 to drive the plug member 21 of the tool accessory 20 to withdraw from the rotating sleeve 121.
Specifically, in some embodiments of the present invention, when the rotating sleeve 121 is rotated in the first direction, the slope of the ejection driving portion 1212 contacts the end surface of the second end of the ejection member 1231, and continues to rotate the rotating sleeve 121, and as the height of the slope of the ejection driving portion 1212 increases gradually, the ejection driving portion 1212 drives the ejection member 1231 to move gradually toward the axis direction of the rotating sleeve 121 and compresses the second elastic element 1232, the elastic force of the second elastic element 1232 for driving the ejection member 1231 to reset increases, and the ejection member 1231 moves back toward the axis direction of the rotating sleeve 121, after the ejection member 1231 moves toward the axis direction of the rotating sleeve 121, the first end of the ejection member 1231 contacts the receiving portion 212 on the plug member 21 of the tool accessory 20 and applies a force to the receiving portion 212, and the force drives the plug member 21 of the tool accessory 20 to withdraw from the rotating sleeve 121, thereby ejecting the plug member 21 of the tool accessory 20 from the rotating sleeve 121, and simultaneously ejecting the tool accessory 20 during the release of the mechanical connection between the host 10 and the tool accessory 20.
In some embodiments of the present invention, the surface of the first end of the ejector 1231 that interacts with the receiving portion 212 on the socket 21 of the tool attachment 20 is a slope, and when the rotating sleeve 121 is rotated in the first direction, the first end of the ejector 1231 contacts with the receiving portion 212 on the socket 21 of the tool attachment 20 and applies a force to the receiving portion 212, and the slope structure is more beneficial for the ejector 1231 to eject the socket 21 of the tool attachment 20 smoothly.
In some embodiments of the present invention, the rotating sleeve 121 is provided with a plurality of ejection driving portions 1212, the locking mechanism includes a plurality of ejection assemblies 123, the plurality of ejection assemblies 123 are preferably uniformly distributed along the circumferential direction of the rotating sleeve 121, the plug member 21 is provided with a plurality of receiving portions 212, the ejection members 1231 of the ejection assemblies 123 are configured to be matched with the receiving portions 212 of the plug member 21 of the tool accessory 20 in a one-to-one correspondence, and the ejection driving portions 1212 are configured to be matched with the ejection members 1231 of the ejection assemblies 123 in a one-to-one correspondence. 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 21 of the tool accessory 20 is provided with two receiving portions 212, the ejection members 1231 of the ejection assemblies 123 are correspondingly matched with the receiving portions 212 on the plug 21 one by one, and the ejection driving portions 1212 are correspondingly matched with the ejection members 1231 of the ejection assemblies 123 one by one. By providing a plurality of ejection assemblies 123, the plug 21 of the tool attachment 20 can be ejected from the rotating sleeve 121 of the host 10 more stably and smoothly.
While embodiments of the present invention have been shown and described, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that changes, modifications, substitutions and alterations may be made therein by those of ordinary skill in the art without departing from the spirit and scope of the invention, all such changes being within the scope of the appended claims.
Claims (15)
1. A host for mounting a plug-in tool accessory having a plug-in connector, the host comprising: the locking mechanism comprises a rotating sleeve and a locking component, the rotating sleeve is rotatably arranged at an interface of one end of the base, the rotating sleeve is provided with an unlocking driving part, and the locking component comprises a locking piece and a first elastic element which are matched;
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 combined 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 rotates along a first direction, the unlocking driving part drives the locking piece to move back to the axial direction of the rotating sleeve, and increases the elastic force of the first elastic element for driving the locking piece to reset, 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 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 direction of the rotating sleeve, the locking piece is provided with a concave part for at least partial accommodation of the unlocking driving part, and when the rotating sleeve rotates along a first direction, the height change of the unlocking driving part enables the locking piece to move back to the axial direction of the rotating sleeve;
the outer peripheral wall adjacent to the first end of the locking piece is provided with a first abutting part, the outer wall of the interface at one end of the base body is provided with a first through hole for the first end of the locking piece to pass through, the outer wall of the interface at one end of the base body is provided with a mounting part, the locking piece is sleeved with a first elastic element, one end of the first elastic element abuts against the first abutting part, and the other end of the first elastic element abuts against the mounting part.
2. The host machine of claim 1, wherein the locking assembly further comprises an elastic return element disposed within the rotating sleeve, wherein an elastic force of the elastic return element driving the rotating sleeve to return increases when the rotating sleeve is rotated in a first direction.
3. The host machine of claim 1, wherein the rotating 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 engagement portions on plug members of the tool accessories 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.
4. A host machine as claimed in claim 3, wherein the plurality of locking assemblies are evenly distributed along the circumference of the rotating sleeve.
5. A power tool comprising a host and a tool accessory, wherein the host is as claimed in any one of claims 1 to 4, and the tool accessory has a plug.
6. The power tool of claim 5, wherein the first end of the locking member has a wedge-shaped structure, and wherein the sloped wall of the wedge-shaped structure of the first end of the locking member faces the socket of the tool accessory when the socket of the tool accessory is inserted into the bore of the rotating sleeve.
7. The power tool of claim 6, wherein a peripheral edge of the plug of the tool attachment facing the front end face of the locking mechanism has a chamfer.
8. The power tool of claim 6, wherein the engagement portion on the plug of the tool accessory is a wedge-shaped groove that mates with the wedge-shaped structure of the first end of the locking element.
9. The power tool according to claim 5, wherein the rotating sleeve is provided with an ejection driving portion, the socket is provided with a receiving portion on the plug connector, 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 axis direction of the rotating sleeve, the elastic force for driving the ejection member to reset is increased by the second elastic element, and the first end of the ejection member applies a force to the receiving portion on the plug connector of the tool accessory to drive the plug connector of the tool accessory to withdraw from the rotating sleeve.
10. The power tool according to claim 9, wherein the ejector driving portion is a slope provided on an inner wall of the rotating sleeve and having a gradually increasing height extending in a circumferential direction of the rotating sleeve, the slope of the ejector driving portion abutting against the second end of the ejector when the rotating 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 rotating sleeve.
11. The power tool according to claim 9, wherein a second abutting portion is provided on an outer peripheral wall of the ejector adjacent to the second end, a second through hole through which the first end of the ejector passes is provided on an interface outer wall of one end of the base body, the second elastic element is sleeved on the ejector, one end of the second elastic element abuts against the second abutting portion, and the other end of the second elastic element abuts against an outer wall of the second through hole of the base body.
12. The power tool of claim 9, wherein the surface of the first end of the ejector that interacts with the receptacle on the plug of the tool attachment is a beveled surface.
13. The power tool of claim 9, wherein the rotating sleeve is provided with a plurality of ejection driving portions, the locking mechanism comprises a plurality of ejection assemblies, the plug connector is provided with a plurality of receiving portions, the ejection members of the ejection assemblies are used for being matched with the receiving portions of the plug connector of the tool accessory in a one-to-one correspondence manner, and the ejection driving portions are used for being matched with the ejection members of the ejection assemblies in a one-to-one correspondence manner.
14. The power tool of claim 12, wherein the plurality of ejection assemblies are evenly distributed along a circumference of the rotating sleeve.
15. The power tool of claim 5, wherein the locking mechanism further comprises a securing assembly including a securing member mounted on an end face of the rotating sleeve facing the tool attachment such that the rotating sleeve is rotatably disposed at an interface of one end of the base body, and at least one electrical output member disposed through the securing member for electrical connection of the host machine and the tool attachment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011328410.0A CN112743492B (en) | 2020-11-24 | 2020-11-24 | Main unit and electric tool |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011328410.0A CN112743492B (en) | 2020-11-24 | 2020-11-24 | Main unit and electric tool |
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| CN112743492B true CN112743492B (en) | 2024-05-07 |
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| Publication number | Publication date |
|---|---|
| CN112743492A (en) | 2021-05-04 |
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