WO2022222614A1 - 扭力输出工具 - Google Patents

扭力输出工具 Download PDF

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Publication number
WO2022222614A1
WO2022222614A1 PCT/CN2022/079243 CN2022079243W WO2022222614A1 WO 2022222614 A1 WO2022222614 A1 WO 2022222614A1 CN 2022079243 W CN2022079243 W CN 2022079243W WO 2022222614 A1 WO2022222614 A1 WO 2022222614A1
Authority
WO
WIPO (PCT)
Prior art keywords
planetary gear
locking
gear
torque output
shaft
Prior art date
Application number
PCT/CN2022/079243
Other languages
English (en)
French (fr)
Inventor
陆伟
吴迪
Original Assignee
南京泉峰科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 南京泉峰科技有限公司 filed Critical 南京泉峰科技有限公司
Priority to EP22790723.5A priority Critical patent/EP4292762A1/en
Publication of WO2022222614A1 publication Critical patent/WO2022222614A1/zh
Priority to US18/467,508 priority patent/US20240001523A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • 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
    • B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/0007—Connections or joints between tool parts
    • 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

Definitions

  • the present application relates to an electric tool, in particular to a torque output tool.
  • the torque output tool is provided with a transmission assembly for attaching and detaching accessories.
  • the locking cylinder can be moved in the locked position and the unlocked position, so as to quickly attach or detach the attachment.
  • the locking column is in contact with the driving wheel. Due to the design strength requirements, the contact surface between the driving wheel and the locking column usually has a pit, which causes the contact surface between the driving wheel and the end face of the shaft locking column to be non-planar, making the locking column easy to tilt relative to the driving wheel. As a result, the locking post cannot be pushed to the corresponding locking and unlocking positions precisely.
  • the purpose of the present application is to provide a torque output tool, which is used to realize the improved accuracy of the installation structure for installing the working accessories.
  • the present application provides a torque output tool, including a casing; a motor, which is arranged in the casing; an output shaft, which can be connected to and drive a working accessory to rotate; a transmission assembly, including: a driving wheel, which can be driven by the motor to drive the output shaft to rotate around the first axis; the shaft locking ring is arranged around the output shaft; a plurality of locking columns are arranged in the shaft locking ring and are arranged around the output shaft; the torque output tool also includes: a spacer, arranged on the driving wheel and the shaft locking ring, and the spacer is used to separate the locking column and the drive wheel.
  • the side of the driving wheel close to the locking column is further provided with a plurality of dial blocks, and the dial blocks are located between the shaft locking ring and the output shaft.
  • the separator includes a main body part and an extension part, the main body part is an annular gasket with a through hole in the middle, the extension part extends toward the through hole, the number of the extension parts is the same as the number of the locking posts, and the extension parts can be in contact with the locking posts .
  • an opening is formed between adjacent extension parts, and the dial is inserted into the opening.
  • the locking column has at least a locking position and an unlocking position relative to the shaft lock ring, wherein when the locking column is at the locking position, the locking column locks the rotation of the output shaft relative to the housing, and when the locking column is at the unlocking position, the locking column is released.
  • the rotation of the output shaft; the dial is used to toggle to switch the locking column between the locked position and the unlocked position.
  • the spacer is a gasket with a flat end surface.
  • the torque output tool further includes a gear box, the gear box includes a first gear box and a second gear box, the driving wheel and the shaft lock ring are located in the second gear box;
  • the transmission assembly further includes: a first planetary gear set, including : The first planetary gear, the first planetary gear carrier and the first-stage ring gear, the first planetary gear is driven by the motor, and the first planetary gear carrier is used to install the first planetary gear, the first-stage ring gear and the first planet gear meshing;
  • the second planetary gear set, the second planetary gear set includes: a second planetary gear and a second planetary gear carrier, the second planetary gear carrier is used to install the second planetary gear;
  • the first gear box is arranged at one end of the motor and Support the motor.
  • the transmission assembly further includes a positioning member, which is supported by the first gear box and positions the first-stage ring gear in the direction of the first axis.
  • the dimension of the gearbox in the direction of the first axis is greater than or equal to 43 mm and less than or equal to 55 mm.
  • the second planetary gear set further includes a second-stage ring gear
  • the transmission assembly further includes a third planetary gear set
  • the third planetary gear set includes a third planetary gear, a drive wheel, and a third-stage ring gear, which drives the The wheel is used to install the third planetary gear, the third-stage ring gear meshes with the third planetary gear, and the drive wheel meshes with the output shaft.
  • a spacer is arranged between the drive wheel and the shaft lock ring to reduce the wear of the drive wheel, and through the arrangement of the spacer, the movement of the locking column is made more stable, and the overall performance of the torque output tool is improved.
  • FIG. 1 is a schematic three-dimensional structure diagram of a torque output tool provided by the first embodiment of the present application
  • Fig. 2 is the sectional structure schematic diagram of the torque output tool provided by Fig. 1;
  • Figure 3a is an exploded schematic view of the partial structure of the transmission assembly of the torque output tool provided in Figure 1;
  • 3b is a schematic cross-sectional view of the locking column of the transmission assembly of the torque output tool provided in FIG. 1 in an unlocked position;
  • 3c is a schematic cross-sectional view of the locking column of the transmission assembly of the torque output tool provided in FIG. 1 in a locked position;
  • Fig. 4 is the structural representation of the partition and the transmission wheel of the torque output tool provided by Fig. 1;
  • Fig. 5 is the structural representation of the partition of the torque output tool provided by Fig. 1;
  • FIG. 6 is a schematic cross-sectional view of the transmission assembly of the torque output tool provided in FIG. 1;
  • Fig. 7 is the exploded schematic diagram of part of the transmission assembly of the torque output tool provided in Fig. 1;
  • FIG. 8 is a schematic diagram of the first gear box of the torque output tool provided in FIG. 1;
  • FIG. 9 is a schematic diagram of the first-stage inner ring gear limited by the spacer of the torque output tool provided in FIG. 1;
  • FIG. 10 is a schematic three-dimensional structural diagram of a transmission assembly of a torque output tool provided by the second embodiment of the present application.
  • FIG. 11 is a schematic plan view of the structure of the transmission assembly of the torque output tool provided in FIG. 10 .
  • the torque output tool 100 of the first embodiment shown in FIG. 1 is a torque output tool, which is a hand-held power tool.
  • the torque output tool 100 of the present application takes an electric screwdriver as an example; of course, the torque output tool 100 can also be other tools that can output torque, such as an electric drill, or a tool that has both screwdriver and electric drill functions, and can also be used for other torque output tools. Tools that translate into other forms of movement.
  • the torque output tool 100 may include: a housing 110 , a motor 120 , a transmission assembly 200 and an output assembly.
  • the motor 120 is accommodated in the housing 110 for converting energy provided by an energy source into power and outputting it to the transmission assembly 200 , the motor 120 includes a rotor shaft 121 that rotates around the first axis 101 .
  • the transmission assembly 200 is disposed between the motor 120 and the output assembly, and is used to realize power transmission between the motor 120 and the output assembly.
  • the output assembly can directly output power to the workpiece to be operated; the output assembly can also be connected with a tool attachment 111 to drive the workpiece through the tool attachment 111 , thereby realizing the tool function of the torque output tool 100 .
  • the output assembly includes: an output shaft 130 and a working attachment 111 connected to the output shaft 130 , the working attachment 111 may be a clamping device, and the output shaft 130 can rotate relative to the housing 110 around the first axis 101 ,
  • the clamping device is mounted on the output shaft 130 and can rotate synchronously to the output shaft 130 to output power.
  • the holding device can hold a bit.
  • the transmission assembly 200 includes: a shaft locking ring 220 , a locking column 230 and a driving wheel 210 .
  • the driving wheel 210 is sleeved on the output shaft 130 and rotates synchronously with the output shaft 130 .
  • the output shaft 130 has a transmission part matched with the driving hole 213 , and the transmission part is an outer hexagonal part.
  • the shaft lock ring 220 is fixedly arranged in the casing 110 , and the shaft lock ring 220 cannot rotate relative to the casing 110 .
  • the shaft lock ring 220 is sleeved around the output shaft 130 , an accommodating space is formed between the shaft lock ring 220 and the output shaft 130 , and the locking column 230 is located at the accommodating space formed between the shaft lock ring 220 and the output shaft 130 .
  • the driving wheel 210 also includes a wheel body, and the wheel body generally presents a disc-like structure.
  • a dial block 211 is formed on the side of the wheel body close to the locking column 230, and the dial block 211 is located in the accommodating space between the shaft locking ring 220 and the output shaft 130.
  • the wheel body of the driving wheel 210 is further formed with a driving hole 213 , and the transmission part of the output shaft 130 extends into the driving hole 213 .
  • the transmission part of the output shaft 130 is an outer hexagonal part
  • the corresponding driving hole 213 is a ten-point hexagonal part that can be used to allow the transmission part to rotate in the driving hole 213 and relative to the driving wheel 210 within a preset angle range.
  • the octagonal hole of course, the specific structure of the driving hole 213 is not limited to this, as long as the structure of the driving hole 213 can allow the transmission part to rotate relative to the driving wheel 210 in the driving hole 213 within a preset angle range, it belongs to the present invention.
  • the scope of protection of the application is not limited to the outer hexagonal part, and the transmission part of the output shaft 130 may also be other transmission structures.
  • the locking column has at least a locking position and an unlocking position relative to the shaft locking ring 220, wherein when the locking column is in the locking position, the locking column locks the rotation of the output shaft 130 relative to the housing 110, and when the locking column is at the unlocking position, the locking column releases the output The rotation of the shaft 130; the toggle block 211 is used to toggle to switch the locking column between the locked position and the unlocked position.
  • the shaft lock ring 220 is formed with an inner wall surface with the first axis 101 as the center line, and the inner wall surface surrounds the output shaft 130 to form the above-mentioned accommodating space.
  • the outer circumference of the output shaft 130 includes a first surface and a second surface, wherein the first surface is parallel to the first axis 101 , and the second surface takes the first axis 101 as a centerline.
  • the locking post 230 is a cylindrical pin disposed between the first surface and the inner wall surface.
  • the number of the first surfaces is 3, and the number of the second surfaces is also 3, and the first surfaces and the second surfaces are arranged at intervals in the circumferential direction around the first axis 101 in sequence.
  • the number of locking posts is also 3, and the number of shifting blocks 211 is also 3.
  • the three shifting blocks 211 are respectively located between two adjacent locking columns to push the locking columns in the circumferential direction around the first axis 101 . move up. 3b, when the locking column 230 is in the unlocking position, the locking column 230 is not in contact with the inner wall surface and the first surface at the same time, at this time, the driving wheel 210 can drive the output shaft 130 to rotate relative to the housing 110 along the first direction.
  • the locking post 230 when the locking post 230 is in the locking position, the locking post 230 can be in contact with the inner wall surface and the first surface at the same time, and at this time the locking post 230 is stuck at the circumferential position around the first axis 101, which At this time, the rotation of the output shaft 130 relative to the housing 110 is locked, so that the user cannot rotate the output shaft 130 mechanism relative to the housing 110 from the side where the output assembly is located, so that the user can disassemble the clamping device.
  • the torque output tool 100 further includes a spacer 240 disposed between the driving wheel 210 and the shaft lock ring 220, and the spacer 240 is used to isolate the locking column 230 and at least part of the driving wheel 210, and at the same time, the spacer 240 can block at least part of the drive wheel 210 and shaft lock ring 220.
  • the driving wheel 210 includes a third surface provided with the paddle 211, and the spacer 240 is provided in contact with the third surface.
  • the driving wheel 210 and the shaft locking ring 220 are in direct contact without the partition 240 , the friction generated by the relative movement between the driving wheel 210 and the shaft locking ring 220 will cause the end surface of the driving wheel 210 to wear.
  • the separator 240 includes a main body part 241 and an extension part 242.
  • the main body part 241 is an annular gasket with a through hole 243 in the middle, and the extension part 242 extends to the through hole 243 in the middle of the annular gasket.
  • the number is the same, and the extension portion 242 can be in contact with the locking post 230 .
  • the spacer 240 is disposed to be attached to the third surface of the driving wheel 210 with the dial 211 , and at the same time, the other side of the spacer 240 opposite to the third surface is in contact with the locking post 230 , specifically, the extension 242 and the locking post 230 Abut.
  • the extension parts 242 are arranged between the dial blocks 211 , so that the dial blocks 211 and the extension parts 242 are arranged at intervals, and openings 244 are formed between the adjacent extension parts 242 , and the dial blocks 211 are inserted into the openings 244 .
  • the shape of the through hole 243 matches the driving hole 213 so that the output shaft 130 can pass through the through hole 243 .
  • the third surface of the driving wheel 210 is provided with a paddle 211, due to the influence of the process and the requirement of the strength of the driving wheel 210, the third surface of the driving wheel 210 often has grooves, so that the third surface is uneven. If the spacer 240 is not provided, the locking post 230 is in direct contact with the third surface. When the locking post 230 is switched to the locking position and the unlocking position, the locking post 230 is toggled by the toggle block 211 to move relative to the third surface, and the unevenness is uneven.
  • the third surface will affect the movement process of the locking column 230, so that the locking column 230 is easily inclined relative to the driving wheel 210, so that the locking column 230 cannot be accurately pushed to the corresponding locking position and unlocking position, thereby affecting the torque output tool 100. performance. Therefore, the surface of the partition member 240 in this embodiment is flat, and the partition member 240 is a gasket with a flat end surface, so that the surface of the clamping locking column 230 is flat, thereby improving the stability of the transmission mechanism of the torque output device.
  • the transmission assembly 200 further includes a planetary gear train for deceleration, while the torque output tool 100 further includes a gear box 250, the gear box 250 includes a first gear box 251 and a second gear box 252, at least part of the planetary gear train
  • the shaft lock ring 220 , the drive wheel 210 and the locking column 230 are arranged in the second gear box 252 , provided in the first gear box 251 .
  • the number of planetary gear trains may be one level or multiple levels. The following describes the specific structure of this embodiment by taking the three-level planetary gear train as an example.
  • the transmission assembly 200 includes a first planetary gear set 260, a second planetary gear set 270 and a third planetary gear set 290.
  • the first planetary gear set 260 includes a first planetary gear 261 and a first planetary gear carrier 262
  • the second planetary gear set 270 includes a second planetary gear 271 and a second planetary gear carrier 272 .
  • the transmission assembly 200 includes a sun gear, and the sun gear is connected to the motor 120 and is driven to rotate by the motor 120 .
  • the first planetary gear 261 is provided to mesh with the sun gear.
  • the third planetary gear set 290 includes a third planetary wheel 291 , a driving wheel 210 and a third-stage ring gear 292 .
  • the driving wheel 210 is used for installing the third planetary wheel 291 , and the driving wheel 210 is engaged with the output shaft 130 .
  • the third-stage ring gear 292 meshes with the third planetary gear 291 ; the second planetary gear set 270 is disposed between the first planetary gear set 260 and the third planetary gear set 290 .
  • the first gear box 251 includes a front end and a rear end, the gear box 250 is disposed at one end of the motor 120 , and the rear end of the first gear box 251 supports the rotor shaft 121 of the motor 120 .
  • the front end of the first gear case 251 is open, and communicates with the inside of the second gear case 252 .
  • the transmission assembly 200 further includes a first-stage ring gear 263 disposed in the housing 110 assembly, and the first-stage ring gear 263 meshes with the first planetary gear 261 .
  • a plurality of first planetary gears 261 are provided, and the plurality of first planetary gears 261 are arranged to mesh with the sun gear, and the motor 120 drives the first planetary gears 261 to rotate through the sun gear.
  • the sun gear and the first planetary gear 261 form meshing teeth that transmit power.
  • the diameter of the addendum circle of the sun gear is set to be smaller than the diameter of the addendum circle of the first planetary gear 261, so that the number of teeth of the meshing teeth of the first planetary gear 261 is larger than that of the sun gear.
  • the number of teeth of the meshing teeth is set to be smaller than the diameter of the addendum circle of the first planetary gear 261, so that the number of teeth of the meshing teeth of the first planetary gear 261 is larger than that of the sun gear. The number of
  • the first planetary wheel carrier 262 includes a transmission plate, a support bracket and a first output portion 266.
  • the support bracket and the first output portion 266 are respectively formed on both sides of the transmission plate.
  • the support bracket is inserted into the first planetary wheel 261, and is connected with the first planetary wheel. 261 constitutes a rotational connection, so that the first planetary wheel 261 can drive the first planetary wheel carrier 262 to rotate around the first axis 101 during operation.
  • Meshing teeth are formed on the peripheral side of the transmission disc and the first output part 266 , and the first output part 266 is used for meshing with the second planetary gear set 270 , so as to realize the transmission of the first planetary gear set 260 and the second planetary gear set 270 connect.
  • a plurality of second planetary gears 271 are provided and externally mesh with the first output portion 266 , that is, the first output portion 266 of the first planetary gear set 260 constitutes the sun gear of the second planetary gear 271 .
  • the transmission assembly 200 further includes a second-stage ring gear 273 , and internal teeth are formed on the inner circumference of the second-stage ring gear 273 .
  • the second-stage ring gear 273 and the second planetary gear 271 form a meshing connection.
  • the second planetary gear 271 and the second planetary gear carrier 272 form a rotational connection, and the second planetary gear carrier 272 forms a second output portion connected with the output shaft 130 .
  • the output shaft 130 is interposed between the second output parts, so as to realize the synchronous rotation of the output shaft 130 and the second output part.
  • the second-stage ring gear 273 meshes with the second planetary gear 271 , the second-stage ring gear 273 includes a plurality of first locking teeth 274 , the transmission assembly further includes a switching member, and the switching member includes a first locking tooth 274 that cooperates with the first locking teeth 274 .
  • the switching member is movable to at least the first position and the second position. When the switching member is at the first position, the second locking teeth and the second ring gear are staggered in the circumferential direction of the first axis 101; when the switching member is at the second position, the second locking teeth and the second ring gear are staggered.
  • a locking tooth 274 is disengaged in the circumferential direction of the first axis 101 .
  • the second locking teeth limit the rotation of the second-stage ring gear 273 by contacting the first locking teeth 274 , that is, the second-stage ring gear 273 is opposite to the first gear box at this time.
  • 251 is non-rotatable around the first axis 101.
  • the second-stage planetary gear set plays a role in deceleration, and the transmission assembly 200 outputs the first transmission ratio as a whole.
  • the transmission assembly 200 outputs a second gear ratio as a whole, and the first gear ratio is greater than the second gear ratio.
  • the switching member may be a ring body, and the ring body is provided with second locking teeth.
  • the switching member forms a matching portion that cooperates with the first gear box 251 , so that the housing 110 restricts the non-rotation of the switching member relative to the housing 110 through the cooperation with the matching portion of the switching member, and the first gear box 251 of the switching member is fixed and can be opposed to each other.
  • the first gear box 251 is moved to the first position and the second position.
  • the torque output tool 100 further includes a positioning member 280, which is supported by the first gear box 251 and positions the first-stage ring gear 263 in the direction of the first axis 101.
  • the positioning pin 281 extends along the direction of the first axis 101, along the direction of the first axis 101. Extending in the direction of the first axis 101 means extending along the axial direction of the first axis 101 or parallel to the axial direction of the first axis.
  • the gear box 250 also forms an installation groove 253, the installation groove 253 extends along the axial direction of the first axis 101, and the first-stage ring gear 263 further includes a protrusion, and the protrusion can be inserted into the installation groove 253 to limit the first The first-stage ring gear 263 cannot rotate relative to the first gear box 251 at this time.
  • the positioning member 280 is a positioning pin 281 , and the positioning pin 281 extends along the axial direction of the first axis 101 .
  • the positioning pin 281 is arranged in the mounting groove 253 formed by the first gear box 251 , and the transmission assembly 200 further includes a gasket, one end of the positioning pin 281 is in contact with the gasket, and the other end of the positioning pin 281 is in contact with the first stage.
  • the ring gear 263 abuts, and the first-stage ring gear 263 is clamped by the positioning pin 281 and the first gear box 251 .
  • the positioning pin 281 abuts against the bump 265 .
  • the positioning pin 281 extends along the axial direction of the first axis 101 , and the diameter of the first gear box 251 along the radial direction of the first axis 101 may not be increased, so that the gear box 250 is located at the first-stage ring gear 263
  • the diameter is less than or equal to 46mm and greater than or equal to 40mm.
  • the size of the gear box 250 in the axial direction of the first axis 101 is greater than or equal to 43 mm and less than or equal to 55 mm.
  • the positioning member is a positioning pin 281a
  • the positioning pin 281a extends along the radial direction of the first axis
  • the first gearbox 251a forms a mounting groove 253a
  • the positioning pin 281a is placed In the installation groove 253a
  • the first gear box 251a cooperates to locate the first-stage ring gear 263a.
  • the first-stage ring gear 263a forms a flat portion 264a
  • the positioning pin 281a is located between the mounting groove 253a and the flat portion 264a.
  • the positioning pin 281a is in contact with the flat position 264a of the first-stage ring gear 263a.
  • the first-stage ring gear 263a further includes a protrusion, and the protrusion can be inserted into the installation groove 253a to limit the first-stage ring gear 263a.
  • the positioning pins 281a abut against the bumps at the same time.

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Abstract

一种扭力输出工具(100)，包括：壳体(110)；电机(120)，设置在壳体内；输出轴(130)，能连接并驱动工作附件转动；以及传动组件(200)。传动组件包括：驱动轮(210)，能被电机驱动以带动输出轴绕第一轴线转动；轴锁环(220)，围绕输出轴设置；多个锁定柱(230)，设置在轴锁环内，并围绕输出轴设置。扭力输出工具还包括：分隔件(240)，设置在驱动轮和轴锁环之间，且分隔件用于隔断锁定柱和至少部分驱动轮。通过设置分隔件，减小驱动轮的磨损，使得锁定柱的移动更加稳定。

Description

扭力输出工具
本申请要求在2021年04月23日提交中国专利局、申请号为202110439981.X的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及一种电动工具，具体的涉及一种扭力输出工具。
背景技术
扭力输出工具设有用于安装和拆卸附件的传动组件，通过驱动轮、轴锁环以及锁定柱的配合实现锁定柱在锁定位置和解锁位置移动，以快速安装或拆卸附件。锁定柱与驱动轮接触，因设计强度需求，驱动轮与锁定柱接触的面通常具有凹坑，导致驱动轮上与轴锁柱的端面的接触面不是平面，使得锁定柱容易相对驱动轮倾斜，导致锁定柱不能精确地被推动到对应的锁定位置和解锁位置。
发明内容
为解决相关技术的不足，本申请的目的在于提供一种扭力输出工具，该扭力输出工具用于实现安装工作附件的安装结构的精准性被提高。
为了实现以上主要申请目的，本申请提供一种扭力输出工具，包括壳体；电机，设置在壳体内；输出轴，能连接并驱动工作附件转动；传动组件，包括：驱动轮，能被电机驱动以带动输出轴绕第一轴线转动；轴锁环，围绕输出轴设置；多个锁定柱，设置在轴锁环内，并围绕输出轴设置；扭力输出工具还包括：分隔件，设置在驱动轮和轴锁环之间，且分隔件用于隔断锁定柱和驱动轮。
可选的，驱动轮靠近锁定柱的一侧还设有多个拨块，拨块位于轴锁环和输出轴之间。
可选的，分隔件包括主体部和延伸部，主体部为中部具有通孔的环形垫片，延伸部向通孔延伸，延伸部的数量和锁定柱的数量一致，延伸部能与锁定柱接触。
可选的，相邻的延伸部之间形成开口，拨块插入开口。
可选的，锁定柱相对轴锁环至少具有锁定位置和解锁位置，其中，在锁定柱位于锁定位置时，锁定柱锁定输出轴相对壳体的转动，在锁定柱位于解锁位置时，锁定柱释放输出轴的转动；拨块用于拨动以切换锁定柱在锁定位置和解锁位置。
可选的，分隔件为端面平整的垫片。
可选的，扭力输出工具还包括齿轮箱，齿轮箱包括第一齿轮箱和第二齿轮箱，驱动轮和轴锁环位于第二齿轮箱内；传动组件还包括：第一行星轮组，包括：第一行星轮、第一行星轮架以及第一级内齿圈，第一行星轮被电机驱动，第一行星轮架用于安装第一行星轮，第一级内齿圈和第一行星轮啮合；第二行星轮组，第二行星轮组包括：第二行星轮和第二行星轮架，第二行星轮架用于安装第二行星轮；第一齿轮箱设置在电机的一端并支撑电机。
可选的，传动组件还包括定位件，被第一齿轮箱支撑，并在第一轴线的方向上定位第一级内齿圈。
可选的，齿轮箱在第一轴线的方向上的尺寸大于或等于43mm且小于或等于55mm。
可选的，第二行星轮组还包括第二级内齿圈，传动组件还包括第三行星轮组，第三行星轮组包括第三行星轮、驱动轮以及第三级内齿圈，驱动轮用于安装第三行星轮，第三级内齿圈和第三行星轮啮合，驱动轮与输出轴啮合。
有益效果：本申请通过在驱动轮和轴锁环之间设置分隔件，减小驱动轮的磨损，且通过分隔件的设置，使得锁定柱的移动更加稳定，提升扭力输出工具的整体性能。
附图说明
图1是本申请第一实施例提供的扭力输出工具的立体结构示意图；
图2是图1提供的扭力输出工具的剖面结构示意图；
图3a是图1提供的扭力输出工具的传动组件的部分结构的爆炸示意图；
图3b是图1提供的扭力输出工具的传动组件的锁定柱位于解锁位置的剖面示意图；
图3c是图1提供的扭力输出工具的传动组件的锁定柱位于锁定位置的剖面示意图；
图4是图1提供的扭力输出工具的分隔件和传动轮的结构示意图；
图5是图1提供的扭力输出工具的分隔件的结构示意图；
图6是图1提供的扭力输出工具的传动组件的剖面示意图；
图7是图1提供的扭力输出工具的部分传动组件的爆炸示意图；
图8是图1提供的扭力输出工具的第一齿轮箱的示意图；
图9是图1提供的扭力输出工具的分隔件限位第一级内齿圈的示意图；
图10本申请第二实施例提供的扭力输出工具的传动组件的立体结构示意图；
图11是图10提供的扭力输出工具的传动组件的平面体结构示意图。
具体实施方式
下面详细描述本申请的实施例，实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本申请，而不能理解为对本申请的限制。
下面结合附图并通过具体实施方式来进一步说明本申请的技术方案。图1所示的第一实施例的扭力输出工具100为一种扭力输出类工具，其为手持式电动工具。本申请的扭力输出工具100以一个电动螺丝批为例；当然扭力输出工具100也可以是其它能输出扭力的工具，比如电钻、或者兼具螺丝批和电钻功能的工具，还可以为其它将扭力转化为其它的运动形式的工具。
参照图2，扭力输出工具100可以包括：壳体110、电机120、传动组件200以及输出组件，电机120容纳于壳体110内，用于将能量源提供的能量转换成动力输出至传动组件200，电机120包括绕第一轴线101转动的转子轴121。
传动组件200设置在电机120和输出组件之间，用于在电机120和输出组件之间实现动力的传递。输出组件可以直接输出动力至待作业的工件；输出组件也可以连接一个工具附件111，通过工具附件111驱动工件，从而实现扭力输出工具100的工具功能。在本实施例中，输出组件包括：输出轴130和与输出轴130连接的工作附件111，工作附件111可以是夹持装置，输出轴130相对壳体110能以第一轴线101为轴转动，夹持装置安装至输出轴130上并能对输出轴130同步转动从而输出动力。对于电动螺丝批而言，夹持装置可以夹持一个批头。
参照图3a到图5，传动组件200包括：轴锁环220、锁定柱230以及驱动轮210。驱动轮210套装在输出轴130上并与输出轴130同步转动，输出轴130具有与驱动孔213配合的传动部，传动部具体为外六角部。轴锁环220固定设置在壳体110内，轴锁环220相对壳体110不能转动。轴锁环220围绕套装在输出轴130上,轴锁环220和输出轴130之间形成有容置空间，锁定柱230位于轴锁环220和输出轴130之间所形成的容置空间处。
驱动轮210还包括轮体，轮体大致呈现一个圆盘式的结构。轮体靠近锁定 柱230的一侧形成拨块211，拨块211位于轴锁环220与输出轴130之间的容置空间内。驱动轮210的轮体还形成有一个驱动孔213，输出轴130的传动部伸入至驱动孔213内。在本实施例中，输出轴130的传动部为外六角部，对应的驱动孔213为能用于允许传动部在驱动孔213内并能相对驱动轮210在一个预设角度范围内转动的十八边形孔，当然该驱动孔213的具体结构并不以此为限，只要驱动孔213的结构能够允许传动部在驱动孔213内相对驱动轮210在一个预设角度范围内转动均属于本申请所保护的范围。输出轴130的传动部也并不以外六角部为限，输出轴130的传动部还可以为其它的传动结构。
锁定柱相对轴锁环220至少具有锁定位置和解锁位置，其中，在锁定柱位于锁定位置时，锁定柱锁定输出轴130相对壳体110的转动，在锁定柱位于解锁位置时，锁定柱释放输出轴130的转动；拨块211用于拨动以切换锁定柱在锁定位置和解锁位置。
轴锁环220形成有以第一轴线101为中心线的内壁面，内壁面围绕输出轴130形成上述的容置空间。输出轴130的外周包括第一表面和第二表面，其中，第一表面平行于第一轴线101，第二表面以第一轴线101为中心线。锁定柱230为圆柱销，圆柱销设置在第一表面和内壁面之间。在本实施例中，为了提高稳定性，第一表面的数目为3，第二表面的数目也为3，第一表面和第二表面在围绕第一轴线101的圆周方向上依次间隔设置。对应的，锁定柱的数目也为3，拨块211的数目也为3，三个拨块211分别位于相邻的两个锁定柱之间以推动的锁定柱在围绕第一轴线101的圆周方向上移动。参照图3b，当锁定柱230位于解锁位置时，锁定柱230没有同时与内壁面以及第一表面接触，这时，驱动轮210能够驱动输出轴130相对壳体110沿着第一方向转动。参照图3c，而当锁定柱230位于锁定位置时，锁定柱230能够同时与内壁面和第一表面接触，这时锁定柱230在围绕第一轴线101的圆周方向上的位置被卡住，这时输出轴130相对壳体110的转动被锁定，从而这时用户不能从输出组件所在的一侧使得输出轴130机构相对壳体110转动，从而这时用户能够拆卸夹持装置。
扭力输出工具100还包括分隔件240，设置在驱动轮210和轴锁环220之间，且分隔件240用于隔断锁定柱230和至少部分的驱动轮210，同时，分隔件240能隔断至少部分的驱动轮210和轴锁环220。驱动轮210包括设有拨块211的第三表面，分隔件240被设置与第三表面接触。由于驱动轮210的硬度较低，若驱动轮210和轴锁环220直接接触，不设置分隔件240，驱动轮210和轴锁环220之间的相对运动产生的摩擦会导致驱动轮210的端面磨损。
分隔件240包括主体部241和延伸部242，主体部241为中部具有通孔243的环形垫片，延伸部242向环形垫片中部的通孔243延伸，延伸部242的数量 和锁定柱230的数量一致，且延伸部242能与锁定柱230接触。分隔件240被设置贴合于驱动轮210具有拨块211的第三表面，同时，分隔件240的相对第三表面的另一侧与锁定柱230抵接，具体通过延伸部242与锁定柱230抵接。并且延伸部242设置在拨块211之间，使得拨块211与延伸部242两两间隔的设置，相邻的延伸部242之间形成开口244，拨块211插入开口244。通孔243的形状和驱动孔213匹配，使得输出轴130能穿过通孔243。
由于驱动轮210在第三表面上设有拨块211，因工艺的影响和驱动轮210强度的需求，驱动轮210的该第三表面上往往具有沟槽，使得第三表面凹凸不平。若不设置分隔件240，锁定柱230与第三表面直接抵接，在锁定柱230被切换到锁定位置和解锁位置时，锁定柱230被拨块211拨动以相对第三表面移动，凹凸不平的第三表面会影响锁定柱230的运动过程，使得锁定柱230容易相对驱动轮210倾斜，从而使得锁定柱230不能精确地被推动到对应的锁定位置和解锁位置，从而影响扭力输出工具100的性能。因此，本实施例中的分隔件240的表面平整，分隔件240为端面平整的垫片，使得夹持锁定柱230的表面平整，从而提升扭力输出装置的传动机构的稳定性。
参照图6，传动组件200还包括用于减速的行星轮系，同时扭力输出工具100还包括齿轮箱250，齿轮箱250包括第一齿轮箱251和第二齿轮箱252，至少部分的行星轮系被设置在第一齿轮箱251内，轴锁环220、驱动轮210以及锁定柱230被设置在第二齿轮箱252内。行星轮系的数目可以为一级也可以为多级，下面以行星轮系为三级为例，介绍本实施例的具体结构。
参照图6和图7，传动组件200包括第一行星轮组260、第二行星轮组270以及第三行星轮组290，第一行星轮组260包括第一行星轮261和第一行星轮架262，第二行星轮组270包括第二行星轮271和第二行星轮架272。传动组件200包括太阳轮，太阳轮和电机120连接被电机120驱动转动。第一行星轮261被设置于太阳轮啮合。第三行星轮组290包括第三行星轮291、驱动轮210以及第三级内齿圈292，驱动轮210用于安装第三行星轮291，所述驱动轮210与所述输出轴130啮合。第三级内齿圈292和第三行星轮291啮合；第二行星轮组270设置在第一行星轮组260和第三行星轮组290之间。
第一齿轮箱251包括前端和后端，齿轮箱250设置在电机120的一端，且第一齿轮箱251的后端支撑电机120的转子轴121。第一齿轮箱251的前端敞开，与第二齿轮箱252的内部连通。
参照图6到图9，传动组件200还包括第一级内齿圈263，被设置在壳体110组件内，第一级内齿圈263与第一行星轮261啮合。第一行星轮261被设有多个，且多个第一行星轮261被设置都与太阳轮啮合，电机120通过太阳轮带动 第一行星轮261转动。太阳轮和第一行星轮261形成传递动力的啮合齿，太阳轮的齿顶圆直径被设置小于第一行星轮261的齿顶圆直径，使得第一行星轮261的啮合齿的齿数大于太阳轮的啮合齿的齿数。
第一行星轮架262包括传动盘、支撑架以及第一输出部266，支撑架和第一输出部266分别形成于传动盘两侧，支撑架插入第一行星轮261，且与第一行星轮261构成转动连接，从而第一行星轮261可以带动第一行星轮架262运行时绕第一轴线101转动。传动盘和第一输出部266周侧上都形成有啮合齿，第一输出部266用于和第二行星轮组270啮合，从而实现第一行星轮组260和第二行星轮组270的传动连接。
第二行星轮271设有多个，且和第一输出部266构成外啮合，即第一行星轮组260的第一输出部266构成了第二行星轮271的太阳轮。传动组件200还包括第二级内齿圈273，在第二级内齿圈273的内周形成有内齿。第二级内齿圈273和第二行星轮271构成啮合连接。第二行星轮271和第二行星轮架272构成转动连接，第二行星轮架272形成与输出轴130连接的第二输出部，输出轴130包括与第二输出部配合的扁位264，部分输出轴130被置入第二输出部之间，从而实现输出轴130和第二输出部的同步转动。
第二级内齿圈273和第二行星轮271啮合，第二级内齿圈273包括多个第一锁定齿274，传动组件还包括切换件，切换件包括与第一锁定齿274配合的第二锁定齿。切换件可以至少移动到第一位置和第二位置。在在切换件位于第一位置时，第二锁定齿和第二内齿圈在第一轴线101的周向方向上被交错地设置；在切换件位于第二位置时，第二锁定齿和第一锁定齿274在第一轴线101的周向方向上脱开。在切换件位于第一位置时，第二锁定齿通过和第一锁定齿274的抵接限制第二级内齿圈273的转动，即第二级内齿圈273在此时相对第一齿轮箱251绕第一轴线101不可转动，此时第二级行星轮组起到减速作用，传动组件200总体输出第一传动比。在切换件被移动到第二位置时，第二锁定齿和第一锁定齿274不再抵接，从而第二级内齿圈273可以相对第一齿轮箱251转动，从而第二级内齿圈273和第二行星轮271同步转动，第二级行星轮组不具有减速作用，此时传动组件200总体输出第二传动比，第一传动比大于第二传动比。
切换件可以是环体，环体上设有第二锁定齿。切换件形成与第一齿轮箱251配合的配合部，从而壳体110通过与切换件的配合部的配合，限定切换件相对壳体110的不可转动，切换件第一齿轮箱251固定并可相对第一齿轮箱251移动到第一位置和第二位置。
扭力输出工具100还包括定位件280，被第一齿轮箱251支撑，并在第一轴 线101的方向上定位第一级内齿圈263，定位销281沿着第一轴线101的方向延伸，沿着第一轴线101的方向延伸是指沿着第一轴线101的轴向方向或者平行于第一轴线的轴向方向延伸。通过定位件280配合第一齿轮箱251共同对第一轴线101定位，无需第一齿轮箱251单独对第一级内齿圈263定位，从而第一齿轮箱251的前端能够敞开，以缩短第一齿轮箱251的尺寸。
齿轮箱250还形成安装槽253，安装槽253沿着第一轴线101的轴向方向延伸，第一级内齿圈263还包括凸块，凸块能被置入安装槽253以限位第一级内齿圈263，此时第一级内齿圈263相对第一齿轮箱251不可转动。
可选的，定位件280为定位销281，定位销281沿着第一轴线101的轴向方向延伸。定位销281被设置在第一齿轮箱251自形成的安装槽253内，且传动组件200还包括垫片，定位销281的一端与垫片抵接，定位销281的另一端与第一级内齿圈263抵接，通过定位销281和第一齿轮箱251实现对第一级内齿圈263的夹持。定位销281与凸块265抵接。定位销281沿着第一轴线101的轴线方向延伸，可以不增加第一齿轮箱251沿着第一轴线101的径向方向上的直径尺寸，使得齿轮箱250在第一级内齿圈263处的直径小于或等于46mm且大于或等于40mm。同时，因为第一齿轮箱251的结构被简化，齿轮箱250在第一轴线101的轴线方向上的尺寸大于或等于43mm且小于或等于55mm。
在一种实施方式中，参照图8和图9，定位件为定位销281a，定位销281a沿着第一轴线的径向方向延伸，第一齿轮箱251a形成安装槽253a，定位销281a被放置在安装槽253a内，且第一齿轮箱251a配合定位第一级内齿圈263a。第一级内齿圈263a形成扁位264a，定位销281a位于安装槽253a和扁位264a之间。定位销281a与第一级内齿圈263a的扁位264a处接触，第一级内齿圈263a还包括凸块，凸块能被置入安装槽253a以限位第一级内齿圈263a，定位销281a同时与凸块抵接。

Claims (10)

  1. 一种扭力输出工具，包括：
    壳体；
    电机，设置在所述壳体内；
    输出轴，能连接并驱动工作附件转动；
    传动组件，包括：
    驱动轮，能被所述电机驱动以带动所述输出轴绕第一轴线转动；
    轴锁环，围绕所述输出轴设置；
    多个锁定柱，设置在所述轴锁环内，并围绕所述输出轴设置；
    其中，所述扭力输出工具还包括：
    分隔件，设置在所述驱动轮和所述轴锁环之间，且所述分隔件用于隔断所述锁定柱和至少部分所述驱动轮。
  2. 如权利要求1所述的扭力输出工具，其中：
    所述驱动轮靠近所述锁定柱的一侧还设有多个拨块，所述拨块位于所述轴锁环和所述输出轴之间。
  3. 如权利要求2所述的扭力输出工具，其中：
    所述分隔件包括主体部和延伸部，所述主体部为中部具有通孔的环形垫片，所述延伸部向所述通孔延伸，所述延伸部的数量和所述锁定柱的数量一致，且所述延伸部能与所述锁定柱接触。
  4. 如权利要求3所述的扭力输出工具，其中：
    相邻的所述延伸部之间形成开口，所述拨块插入所述开口。
  5. 如权利要求2所述的扭力输出工具，其中：
    所述锁定柱相对所述轴锁环至少具有锁定位置和解锁位置，其中，在所述锁定柱位于所述锁定位置时，所述锁定柱锁定所述输出轴相对所述壳体的转动，在所述锁定柱位于所述解锁位置时，所述锁定柱释放所述输出轴的转动；所述拨块用于拨动以切换所述锁定柱在所述锁定位置和所述解锁位置。
  6. 如权利要求1所述的扭力输出工具，其中：
    所述分隔件为端面平整的垫片。
  7. 如权利要求1所述的扭力输出工具，其中：
    所述扭力输出工具还包括齿轮箱，所述齿轮箱包括第一齿轮箱和第二齿轮 箱，所述驱动轮和所述轴锁环位于所述第二齿轮箱内；
    所述传动组件还包括：
    第一行星轮组，包括：第一行星轮、第一行星轮架以及第一级内齿圈，所述第一行星轮被所述电机驱动，所述第一行星轮架用于安装所述第一行星轮，所述第一级内齿圈和所述第一行星轮啮合；
    第二行星轮组，所述第二行星轮组包括：
    第二行星轮和第二行星轮架，所述第二行星轮架用于安装所述第二行星轮；
    所述第一齿轮箱设置在所述电机的一端并支撑所述电机。
  8. 如权利要求7所述的扭力输出工具，其中：
    所述传动组件还包括定位件，被所述第一齿轮箱支撑，并在所述第一轴线的方向上定位所述第一级内齿圈。
  9. 如权利要求7所述的扭力输出工具，其中：
    所述齿轮箱在所述第一轴线的方向上的尺寸大于或等于43mm且小于或等于55mm。
  10. 如权利要求7所述的扭力输出工具，其中：
    所述第二行星轮组还包括第二级内齿圈，所述传动组件还包括第三行星轮组，所述第三行星轮组包括第三行星轮、所述驱动轮以及第三级内齿圈，所述驱动轮用于安装所述第三行星轮，所述第三级内齿圈和所述第三行星轮啮合，所述驱动轮与所述输出轴啮合。
PCT/CN2022/079243 2021-04-23 2022-03-04 扭力输出工具 WO2022222614A1 (zh)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2013100077A4 (en) * 2013-01-25 2013-02-28 Chervon (Hk) Limited A Multi-Tool For Fasteners
CN104070490A (zh) * 2013-03-29 2014-10-01 南京德朔实业有限公司 电动工具
CN105202064A (zh) * 2014-06-30 2015-12-30 南京德朔实业有限公司 一种扭矩输出工具及其单向扭矩传动机构
CN105437129A (zh) * 2014-06-30 2016-03-30 南京德朔实业有限公司 扭力输出工具
CN106393007A (zh) * 2015-07-31 2017-02-15 南京德朔实业有限公司 扭矩输出工具及其附件装置
CN108789283A (zh) * 2017-05-05 2018-11-13 南京德朔实业有限公司 扭力输出工具

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2013100077A4 (en) * 2013-01-25 2013-02-28 Chervon (Hk) Limited A Multi-Tool For Fasteners
CN104070490A (zh) * 2013-03-29 2014-10-01 南京德朔实业有限公司 电动工具
CN105202064A (zh) * 2014-06-30 2015-12-30 南京德朔实业有限公司 一种扭矩输出工具及其单向扭矩传动机构
CN105437129A (zh) * 2014-06-30 2016-03-30 南京德朔实业有限公司 扭力输出工具
CN106393007A (zh) * 2015-07-31 2017-02-15 南京德朔实业有限公司 扭矩输出工具及其附件装置
CN108789283A (zh) * 2017-05-05 2018-11-13 南京德朔实业有限公司 扭力输出工具

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