EP3228421A1 - Elektrische nietmutterpistole - Google Patents

Elektrische nietmutterpistole Download PDF

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Publication number
EP3228421A1
EP3228421A1 EP15865549.8A EP15865549A EP3228421A1 EP 3228421 A1 EP3228421 A1 EP 3228421A1 EP 15865549 A EP15865549 A EP 15865549A EP 3228421 A1 EP3228421 A1 EP 3228421A1
Authority
EP
European Patent Office
Prior art keywords
nut
pull
hexagon
stroke
leadscrew
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP15865549.8A
Other languages
English (en)
French (fr)
Other versions
EP3228421A4 (de
Inventor
Jingsong HONG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP3228421A1 publication Critical patent/EP3228421A1/de
Publication of EP3228421A4 publication Critical patent/EP3228421A4/de
Withdrawn legal-status Critical Current

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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
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/0007—Tools for fixing internally screw-threaded tubular fasteners
    • B25B27/0014—Tools for fixing internally screw-threaded tubular fasteners motor-driven

Definitions

  • the present invention belongs to the field of mechanical technology, in particular, to an electric rivet nut gun.
  • the rivet nut tool is specially offered as the installation tool for riveting nuts, which includes pneumatic rivet nut gun and electric rivet nut gun.
  • the pneumatic rivet nut tool has the advantages of speed and large tension.
  • there is a big motor crash risk where the rotating blades of pneumatic motor for screwing in and out the rivet nuts are suddenly stuck and out of work when the rotating blades are frequently used or work in the environment with even slight dust.
  • the limitation of the volume of pneumatic motor leads to a small torsion.
  • the riveting tension can be large, there is a drawback that the volume is also increased.
  • the pneumatic motor cannot be used outdoor without pneumatic source. At present, there are two riveting methods for the electric rivet nut gun.
  • the present invention aims to provide an excellent electric rivet nut gun which is designed with a hollow through hole in the sun gear of the motor shaft and planetary gear deceleration system. Moreover, the power motor assembly, the planetary gear deceleration system, the leadscrew drive system, and the pull-riveting system are on the same axis.
  • the design is ergonomic, and has simple and reliable connections between each part. For different rivet nuts, just a simple adjustment can produce several types of tools. Specifically, when the rivet nut of small tension is pulled, the design can be adjusted to have a higher speed When the rivet with high broken limit is pulled, the design can be adjusted to have a large tension and a low speed.
  • An electric rivet nut gun includes a cover, a trigger, a circuit board, a power motor assembly, a pull-riveting system, a leadscrew drive system, a clutch control system, and a planetary gear deceleration system.
  • the power motor assembly includes a motor and a motor shaft.
  • the motor shaft is arranged with a hollow structure and the front end of the motor shaft is provided with a motor pinion gear.
  • the leadscrew drive system includes a roller positioning block, a ball screw, a leadscrew nut, a front bearing pedestal, a rear bearing pedestal, and a connecting shaft.
  • the front end of the ball screw having a hollow structure is fixed by the roller positioning block, and the rear end of the ball screw is connected to the leadscrew nut.
  • the leadscrew nut is arranged inside the front bearing pedestal.
  • the front bearing pedestal is connected to the rear bearing pedestal, and the connecting shaft passing through the rear bearing pedestal is fixed to the leadscrew nut.
  • the roller positioning block is arranged on the front bearing pedestal.
  • the planetary gear deceleration system includes a rear planetary gear pedestal, a front planetary gear pedestal, a sun gear I, a sun gear II, a plurality of planetary gears and an internal gear.
  • the sun gear I and the sun gear II are arranged with a hollow structure.
  • the sun gear II is provided with three planetary gears II and a pinion.
  • the three planetary gears II engage with the motor pinion gear and internal gear at the same time.
  • the internal gear is arranged inside the front planetary gear pedestal in a position-limited manner.
  • the sun gear I is provided with three planetary gears I.
  • the three planetary gears I engage with the pinion.
  • the rear planetary gear pedestal is connected to the front planetary gear pedestal.
  • the pull-riveting system includes a pull rod, a gun head, an adjusting nut, an outer sleeve, a pull-rod nut, a leadscrew locknut, a hexagon connecting rod, a connecting rod fixing circlip and an outer sleeve nut.
  • the outer sleeve is connected and locked to the front bearing pedestal by the outer sleeve nut.
  • the pull-rod nut is arranged inside the rear end of outer sleeve.
  • the leadscrew locknut is arranged inside the pull-rod nut.
  • the pull-rod and the gun head are arranged on the front end of outer sleeve.
  • the rear end of the gun head is provided with thread by processing.
  • the adjusting nut is connected to the threaded part on the rear end of the gun head.
  • the pull-rod is connected to the hexagon connecting rod.
  • the connecting rod fixing circlip is sleeved on the hexagon connecting rod, and located between the front end of ball screw and leadscrew locknut.
  • the clutch control system includes an electromagnet, a thrust terminal, a reset spring, and a clutch connecting shaft.
  • the hexagon hole on one end of the clutch connecting shaft is connected to the hexagon of the hexagon connecting rod.
  • the middle portion of clutch connecting shaft has a hexagon shape which engages with the hexagon hole of hollow sun gear II.
  • the middle portion of the clutch connecting shaft is near the front end of the hexagon connecting rod and is always connected to the hexagon connecting rod.
  • the thrust terminal is arranged on the rear end of the clutch connecting shaft.
  • One end of the reset spring is arranged on the rear end of motor, the other end of the reset spring is arranged on the end face of thrust terminal.
  • the electromagnet controls the clutch connecting shaft to move back and forth by the program in the circuit board, so as to control the clutch connecting shaft to separate and engage with the sun gear II.
  • the cover is provided with a circuit board, a trigger, a stroke mounting plate, and a stroke adjusting plate.
  • the circuit boards are connected to the stroke control plate and the motor respectively by control lines. Both ends of stroke control plate are provided with inductors.
  • the stroke mounting plate and stroke adjusting plate control the adjustment of pull-riveting stroke by the stroke adjusting nut assembly.
  • the roller positioning block is provided with electromagnet, and the inductors are located below the electromagnet.
  • the center line of the power motor assembly, the planetary gear deceleration system, the leadscrew drive system, the pull-riveting system and the direction of riveting are on the same axis.
  • the cover is provided with a transparent window which is located on the outer side of the stroke adjusting plate, and the transparent window is provided with a ruler for stroke adjustment.
  • the front end of leadscrew nut is provided with the scraper seal which is fixed inside the front bearing pedestal.
  • the electric rivet nut tool of the present invention has the following advantages and beneficial effects.
  • the present invention is convenient to carry.
  • the present invention not only has the rapidness and powerfulness of pneumatic tool, but also can be conveniently operated in the field. Desired parameters can be achieved according to requirements, such that the parameter of the electric rivet nut tool can be designed to be the most reasonable and humanized, and thereby the labor force is greatly liberated, and the work efficiency is improved.
  • Stroke mounting plate 31. Stroke adjusting plate; 32. Stroke adjusting nut assembly; 33. Ruler; 34. Transparent window; 35. Trigger; 36. Circuit board; 37. Cover; 38. Gear shift fork; 39. gear shifting switch; 40. Motor pinion gear; 41. Pinion; 42. Scraper seal; 43. Stroke control plate; 44. Inductor; 221. Planetary gear I; 222. Planetary gear II.
  • the electric rivet nut gun includes cover 37, trigger 35, circuit board 36, the power motor assembly, the pull-riveting system, the leadscrew drive system, the clutch control system, and the planetary gear deceleration system.
  • the power motor assembly includes motor 24 and motor shaft 25.
  • Motor shaft 25 is arranged with a hollow structure.
  • the front end of motor shaft 25 is provided with motor pinion gear 40.
  • Power motor assembly can carry out positive and negative rotation to mount or dismount the rivet nut and pull-rivet the nut.
  • the leadscrew drive system includes roller positioning block 10, ball screw 12, leadscrew nut 14, front bearing pedestal 13, rear bearing pedestal 17, and connecting shaft 16.
  • Said ball screw 12 has a hollow structure.
  • the front end of ball screw is fixed by roller positioning block 10, while the rear end of ball screw is connected to leadscrew nut 14 which is the normal leadscrew.
  • leadscrew nut 14 of the present invention has a simple process.
  • the diameter and length of the leadscrew nut can be designed according to the tension.
  • Leadscrew nut 14 is arranged inside front bearing pedestal 13.
  • Rear bearing pedestal 17 is connected to front bearing pedestal 13.
  • Connecting shaft 16 passes through rear bearing pedestal 17 and is fixed to leadscrew nut 14 by steady pin 15.
  • Roller positioning block 10 is arranged on front bearing pedestal 13.
  • the planetary gear deceleration system includes rear planetary gear pedestal 23, front planetary gear pedestal 19, sun gear I 18, sun gear II 21, planetary gear 22, and internal gear 20.
  • Sun gear I 18 and sun gear II 21 are arranged with hollow structures.
  • Sun gear II 21 is provided with three planetary gears II 222 and a pinion 41.
  • Three planetary gears II 222 engage with motor pinion gear 40 and internal gear 20 at the same time.
  • Internal gear 20 is arranged inside front planetary gear pedestal 19 in a position-limited manner.
  • Sun gear I 18 is provided with three planetary gears I 221 which engage with pinion 41.
  • Rear planetary gear pedestal 23 is connected to front planetary gear pedestal 19.
  • Cover 37 can be provided with gear shift fork 38 which is connected to internal gear 20 provided with a groove.
  • Gear shift fork 38 is controlled by gear shifting switch 39 to shift the internal gear.
  • the present invention is designed according to the demand and has a good adaptability, and a robust applicability.
  • the hollow structure of sun gear II 21 is a structure with an abnormal hexagon hole which engages with clutch connecting shaft 26 to mount and dismount the rivet nut.
  • the pull-riveting system includes pull-rod 1, gun head 2, adjusting nut 3, outer sleeve 4, pull-rod nut 5, leadscrew locknut 6, hexagon connecting rod 8, connecting rod fixing circlip 7 and outer sleeve nut 9.
  • Outer sleeve 4 is connected and locked to front bearing pedestal 13 by outer sleeve nut 9.
  • the rear end of outer sleeve 4 is provided with pull-rod nut 5.
  • Leadscrew locknut 6 is provided inside pull-rod nut 5.
  • the front end of outer sleeve 4 is provided with pull-rod 1 and gun head 2.
  • the rear end of gun head 2 is provided with thread by processing, which is connected to adjusting nut 3.
  • Pull-rod 1 is connected to hexagon connecting rod 8.
  • Connecting rod fixing circlip 7 is sleeved on hexagon connecting rod 8 and is located between the front end of ball screw 12 and leadscrew locknut 6. After gun head 2 is properly adjusted, adjusting nut 3 is screwed and locked on the end face of outer sleeve 4 and performs the function of fixing gun head 2 and protecting the thread. Because under the situation of being unlocked, the gap of screwing would cause deviation and damage of the thread.
  • the clutch control system includes electromagnet 29, thrust terminal 28, reset spring 27, and clutch connecting shaft 26.
  • the hexagon of hexagon hole on one end of clutch connecting shaft 26 is connected to hexagon connecting rod 8.
  • the middle portion of clutch connecting shaft 26 has a hexagon shape, which engages with the hexagon hole of hollow sun gear II 21.
  • Thrust terminal 28 which is connected to another end of clutch connecting shaft 26 is pushed and pulled by the driving of electromagnet 29 to separate from and engage with the hexagon hole of hollow sun gear II 21.
  • the middle portion of clutch connecting shaft 26 is always connected to hexagon connecting rod 8 near the front end of hexagon connecting rod 8.
  • Thrust terminal 28 is arranged on the rear end of clutch connecting shaft 26.
  • One end of reset spring 27 is arranged on the rear end of motor 24, another end of reset spring 27 is arranged on the end face of thrust terminal 28.
  • Electromagnet 29 controls clutch connecting shaft 26 to move back and forth by the program in the circuit board, so as to control the separation and meshing with the sun gear II 21.
  • the hexagon connecting rod 8 and pull-rod are driven to rotate.
  • Electromagnet 29 drives clutch connecting shaft 26 to separate the hexagon inner hole of sun gear II 21 from the hexagon part of clutch connecting shaft 26 so as to stop the rotation of pull-rod 1.
  • the clutch control system has fewer components, which avoids the instability of single mechanical clutch, and has a better stability and reliability.
  • Cover 37 is provided with circuit board 36, trigger 35, stroke mounting plate 30, and stroke adjusting plate 31.
  • Circuit board 36 is connected to motor 24 and stroke control plate 43 respectively by control lines.
  • Circuit board 36 is provided with a current overload protection device. Both ends of stroke control plate 43 are provided with inductors 44. Stroke mounting plate 30 and stroke adjusting plate 31 are controlled and adjusted by stroke adjusting nut assembly 32.
  • Roller positioning block 10 is provided with magnet 11. Inductor 44 is located under magnet 11.
  • the center lines of the power motor assembly, the planetary gear deceleration system, the leadscrew drive system, and the pull-riveting system are on the same axis as the direction of riveting.
  • the whole design plus clutch connecting shaft 26 make the electric gun more convenient to operate with much low noise, and the space of the electric gun is saved effectively.
  • cover 37 is provided with transparent window 34 which is located on the outer side of stroke adjusting plate 31.
  • Transparent window 34 is provided with ruler 33 for stroke adjustment, through which the details of stroke adjustment can be seen clearly, such that the stroke is controlled more accurately.
  • the front end of leadscrew locknut 6 is provided with scraper seal 42 which is fixed inside front bearing pedestal 13, such that the stoppage caused by sweeps and dust during nut riveting can be effectively avoided, and the service life of the electric gun is improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Transmission Devices (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
EP15865549.8A 2014-12-05 2015-12-01 Elektrische nietmutterpistole Withdrawn EP3228421A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410730469.0A CN105710814B (zh) 2014-12-05 2014-12-05 一种铆螺母电动枪
PCT/CN2015/096136 WO2016086844A1 (zh) 2014-12-05 2015-12-01 一种铆螺母电动枪

Publications (2)

Publication Number Publication Date
EP3228421A1 true EP3228421A1 (de) 2017-10-11
EP3228421A4 EP3228421A4 (de) 2018-07-25

Family

ID=56091026

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15865549.8A Withdrawn EP3228421A4 (de) 2014-12-05 2015-12-01 Elektrische nietmutterpistole

Country Status (3)

Country Link
EP (1) EP3228421A4 (de)
CN (1) CN105710814B (de)
WO (1) WO2016086844A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11673243B2 (en) 2018-09-05 2023-06-13 Milwaukee Electric Tool Corporation Blind rivet nut-setting tool
CN110682243B (zh) * 2019-10-12 2021-03-19 淮阴工学院 自适应万能套筒扳手
CN112207757A (zh) * 2020-10-30 2021-01-12 瑞萨铆接紧固系统(苏州)有限公司 一种单电机自动铆螺母枪
TWI805277B (zh) * 2022-03-14 2023-06-11 朝程工業股份有限公司 電動工具

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3219716A1 (de) * 1982-04-24 1983-12-01 Alfred Honsel Nieten - und Metallwarenfabrik GmbH & Co, 5758 Fröndenberg Geraet zum setzen von gewindenietmuttern
EP0496499A1 (de) * 1991-01-22 1992-07-29 Emhart Inc. Vorrichtung zur Positionierung von Muttern aus Kunststoff
DE29904289U1 (de) * 1999-03-11 2000-08-10 Ms Verwaltungs Und Patentgesel Abschlußkappe
CN2822887Y (zh) * 2005-09-06 2006-10-04 王荣林 自动铆螺母枪
US20090031545A1 (en) * 2007-08-01 2009-02-05 Abeo, Llc Rivet gun
DE202008011641U1 (de) * 2008-09-01 2008-11-27 Chen, Ching-Liang Konstruktion eines Niethammers mit Bolzenanzug
CN201295891Y (zh) * 2008-11-14 2009-08-26 李仁超 气动拉帽枪结构
CN201871671U (zh) * 2010-12-01 2011-06-22 扬州双盈工具厂 全自动铆螺母枪
CN203401041U (zh) * 2013-06-18 2014-01-22 姚晖 便携式充电铆钉枪
CN203830641U (zh) * 2014-05-20 2014-09-17 高良 拆装方便的电动拉铆枪

Also Published As

Publication number Publication date
CN105710814A (zh) 2016-06-29
EP3228421A4 (de) 2018-07-25
WO2016086844A1 (zh) 2016-06-09
CN105710814B (zh) 2017-11-24

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