WO2019097733A1 - Régulateur de vitesse pour moteur pneumatique, et outil pneumatique - Google Patents

Régulateur de vitesse pour moteur pneumatique, et outil pneumatique Download PDF

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Publication number
WO2019097733A1
WO2019097733A1 PCT/JP2017/042791 JP2017042791W WO2019097733A1 WO 2019097733 A1 WO2019097733 A1 WO 2019097733A1 JP 2017042791 W JP2017042791 W JP 2017042791W WO 2019097733 A1 WO2019097733 A1 WO 2019097733A1
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WO
WIPO (PCT)
Prior art keywords
governor
air motor
valve
stopper
rod
Prior art date
Application number
PCT/JP2017/042791
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English (en)
Japanese (ja)
Inventor
悟 高村
道輝 橋本
Original Assignee
ヨコタ工業株式会社
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 ヨコタ工業株式会社 filed Critical ヨコタ工業株式会社
Priority to CN201780094804.4A priority Critical patent/CN111344113B/zh
Publication of WO2019097733A1 publication Critical patent/WO2019097733A1/fr
Priority to PH12020550659A priority patent/PH12020550659A1/en

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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

Definitions

  • the present invention relates to an air motor governor which regulates the rotational speed of an air motor, and an air tool provided with such a governor.
  • Air motors are commonly used as a drive source for air tools such as air grinders and air sanders.
  • the air tool generally includes a governor that regulates the rotational speed of the air motor.
  • Patent Document 1 describes an air tool provided with an air motor and a governor.
  • the speed governor when the rotational speed of the air motor reaches a certain speed or more, the speed governor does not exceed the allowable speed determined in consideration of safety. Reduce the supply flow rate of compressed air. That is, in the air tool described in Patent Document 1, the governor operates to limit the maximum speed of the air motor.
  • the present invention has been made in view of the above problems, and an object thereof is to provide an air motor governor and an air tool capable of easily resetting the maximum speed of the air motor.
  • the air motor speed governor disclosed in the present application is an air motor speed governor that adjusts the rotational speed of the air motor, and includes a governor rod, a governor valve, biasing means, pressing means, and adjusting means.
  • the governor rod rotates integrally with the rotation shaft of the air motor.
  • the governor valve is movably provided along the axial direction of the governor rod to increase or decrease the supply flow rate of compressed gas to the air motor.
  • the biasing means is disposed in the axial direction, contacts with the governor valve at one end in the axial direction, and biases the governor valve in a valve opening direction in which the supply flow rate increases.
  • the pressing means generates a resistance that increases as the rotational speed of the air motor increases, and the valve closing direction in which the supply flow rate decreases against the biasing force of the biasing unit biasing the governor valve. Press the governor valve.
  • the adjusting means adjusts the biasing force.
  • the adjustment means includes a stopper and positioning means.
  • the stopper is provided so as to be movable along the axial direction of the governor rod, and abuts on the other axial end of the biasing means.
  • the positioning means is mounted on the governor rod, engages with the stopper, and positions the stopper at a predetermined position in the axial direction.
  • the stopper is a plurality of engaged portions engaged with the positioning means, and has a plurality of engaged portions different in axial position.
  • the stopper is provided coaxially with the governor rod, is rotatable relative to the governor rod about the axial center of the governor rod, and the plurality of engaged engagements The portions are disposed along a circle concentric with the axis of the governor rod.
  • the stopper has an end surface portion facing in the valve closing direction.
  • the plurality of engaged portions are bottom portions of a plurality of grooves formed in the end surface portion and having different axial depths.
  • the air tool disclosed in the present application includes an air motor and the speed controller of the air motor described above.
  • the air tool may be an air grinder, an air sander or an air polisher.
  • the speed controller of the air motor and the air tool of the present invention since the biasing force of the biasing means can be adjusted by the adjusting means, the maximum speed of the air motor can be easily reset.
  • FIG. 5 (b) is a sectional view taken along line AA in FIG.
  • the air tool in the present embodiment is an air grinder
  • the air grinder is an air motor 10, a governor 20 for adjusting the rotation speed of the air motor 10, and a polishing machine for rotating the rotation of the air motor 10.
  • a transmission mechanism 30 for transmitting information to T.40.
  • the air motor 10 is supplied with the compressed gas PG from a compressor (not shown) and is driven by the compressed gas PG.
  • the compressed gas PG is, for example, compressed air.
  • the air motor 10 has a rotor 11 and a cylindrical housing 15 that accommodates the rotor 11.
  • the housing 15 has two end plates 15a.
  • the rotor 11 is rotated at a rotational speed corresponding to the supply flow rate Q of the compressed gas PG to the air motor 10.
  • the rotational speed of the air motor 10 corresponds to the rotational speed of the rotor 11.
  • the compressed gas PG is fed to the air grinder through a feed pipe such as a compressed air hose (not shown) and introduced into the gas introduction space 60 through the introduction path 50.
  • a governor 20 is accommodated in the gas introduction space 60.
  • an opening 51 communicating the introduction path 50 with the gas introduction space 60 is formed in the peripheral wall 61 of the gas introduction space 60.
  • the compressed gas PG introduced into the gas introduction space 60 is supplied to the air motor 10 through a supply path (not shown).
  • a well-known vane type air motor can be used as the air motor 10.
  • the rotor 11 is integrally formed with the left rotation shaft 12 and the right rotation shaft 13 so as to project from both left and right ends.
  • the left rotation shaft 12 and the right rotation shaft 13 are supported by the two end plates 15 a of the housing 15 via two radial bearings 14.
  • the left rotation shaft 12 is an output shaft and is connected to the transmission mechanism 30.
  • the right side rotation shaft 13 is connected to the governor 20.
  • the transmission mechanism 30 transmits the rotation output of the air motor output from the left rotation shaft 12 to the polishing disk 40.
  • the polishing disc 40 rotates at a rotational speed corresponding to the rotational speed of the air motor 10.
  • the speed governor 20 has a governor rod 21, a governor valve 22, a spring 23, a governor body 24, a plurality of steel balls 25, a stopper 26, and a pin 27.
  • the governor rod 21 is connected to the right rotation shaft 13 so as to rotate integrally with the right rotation shaft 13.
  • the governor valve 22 is provided so as to be movable along the axial direction X of the governor rod 21, and increases or decreases the supply flow rate Q of the compressed gas PG to the air motor 10.
  • the governor valve 22 is a cylindrical member provided coaxially with the governor rod 21.
  • the governor valve 22 has a constant diameter portion 22a disposed on the distal end side (right side in FIG. 2) of the governor rod 21 and an enlarged diameter portion 22b disposed on the proximal end side (left side in FIG. 2) of the governor rod 21.
  • the enlarged diameter portion 22 b is continuous with the left end portion of the constant diameter portion 22 a, and is formed to increase in diameter in a skirt shape toward the proximal end side of the governor rod 21.
  • the constant diameter portion 22a has an axial hole 22c through which the governor rod 21 is inserted.
  • the governor valve 22 is movable in the axial direction X with respect to the governor rod 21 in a state where the governor rod 21 is inserted into the shaft hole 22c.
  • a pair of long holes 22 d is formed in the axial direction X in the peripheral wall of the constant diameter portion 22 a so as to penetrate the peripheral wall.
  • the pair of elongated holes 22 d are opposed to each other with the axial center of the governor rod 21 interposed therebetween.
  • the spring 23 is disposed in the axial direction X, and one end in the axial direction X abuts on the governor valve 22 to bias the governor valve 22 in the valve opening direction X1 in which the supply flow rate Q increases.
  • One end of the spring 23 in the axial direction X is the end on the proximal end side of the governor rod 21 among both ends in the axial direction X, and is the left end in FIG.
  • the spring 23 in this embodiment corresponds to the biasing means in the claims.
  • the governor body 24 is a circular member coaxial with the governor rod 21 and disposed on the proximal end side of the governor rod 21 with respect to the governor valve 22, and is fixed to the governor rod 21. Further, the governor body 24 has an abutted portion 24 a with which the governor valve 22 abuts, and an annular slope portion 24 b.
  • the governor valve 22 is restricted in movement of the governor rod 21 to the proximal end side by being abutted against the abutted portion 24 a.
  • the sloped portion 24b is inclined with respect to the axial direction X such that the radially outer portion is located closer to the tip end of the governor rod 21 than the inner portion.
  • the plurality of steel balls 25 are disposed between the governor valve 22 and the governor body 24, and can be in contact with the inclined surface 24b and the inner side surface of the enlarged diameter portion 22b. As will be described in detail later, the plurality of steel balls 25 cooperate with the governor body 24 to generate a resistance AF which increases as the rotational speed of the air motor 10 increases, and the spring 23 mounts the governor valve 22.
  • the governor valve 22 is pressed in the valve closing direction X2 in which the supply flow rate Q decreases, against the biasing force F that is biased.
  • the governor body 24 and the steel ball 25 in the present embodiment correspond to the pressing means in the claims.
  • the pressing means is provided coaxially with the governor rod 21 and has a governor body 24 disposed on the proximal end side of the governor rod 21 with respect to the governor valve 22 and a plurality of steel balls 25. And the plurality of steel balls 25 are in contact with the sloped portion 24b and the governor valve 22 so that the outer portion of the rod is positioned closer to the tip end side of the governor rod 21 than the inner portion. It is arranged between the governor valve 22 and the governor body 24 as possible.
  • the stopper 26 is provided movably along the axial direction X, and abuts on the other end of the spring 23 in the axial direction X.
  • the other end of the spring 23 in the axial direction X is the tip end of the governor rod 21 at both ends in the axial direction X, and is the right end in FIG.
  • the stopper 26 is provided coaxially with the governor rod 21, and is rotatable relative to the governor rod 21 about the axial center of the governor rod 21. More specifically, the stopper 26 is an annular member having a hollow portion. The stopper 26 is movable along the axial direction X by inserting the constant diameter portion 22a of the governor valve 22 into the hollow portion and slidingly contacting the constant diameter portion 22a on the inner peripheral surface thereof. The details of the stopper 26 will be described later with reference to FIGS. 4 and 5.
  • the pin 27 is mounted on the governor rod 21 and engages with the stopper 26 to position the stopper 26 at a predetermined position in the axial direction X.
  • the pin 27 is a cylindrical member and is inserted into the lateral hole 21 a of the governor rod 21.
  • the lateral hole 21 a is formed in the vicinity of the tip end portion of the governor rod 21, and penetrates the governor rod 21 so as to be orthogonal to the central axis of the governor rod 21. Both ends of the pin 27 protrude to the outside of the governor valve 22 through the two elongated holes 22 d.
  • the stopper 26 is engaged with both ends of the pin 27 to restrict the movement of the governor rod 21 toward the tip end, and is positioned at a predetermined position in the axial direction X with respect to the governor rod 21. That is, the pin 27 engages with the stopper 26 and regulates the movement of the stopper 26 in the valve closing direction X2, that is, the movement of the stopper 26 to the tip end side of the governor rod 21.
  • the pin 27 in this embodiment corresponds to the positioning means in the claims. As described above, the pin 27 is inserted into the pair of long holes 22d. The elongated hole 22 d in the axial direction X enables the governor valve 22 to move in the axial direction X with respect to the pin 27. Further, the relative rotation of the governor valve 22 with respect to the governor rod 21 is restricted by inserting the pin 27 into the pair of elongated holes 22 d.
  • FIG. 3A shows the governor 20 when the air motor 10 is not rotating.
  • the opening 51 of the introduction path 50 is opposed to the one end 22 e of the governor valve 22.
  • the one end 22 e of the governor valve 22 is the tip end of the governor rod 21 among the two ends in the axial direction X of the governor valve 22.
  • the governor valve 22 abuts on the governor body 24 by the biasing force of the spring 23.
  • the governor valve 22 is in contact with the governor body 24, the distance between the one end 22e of the governor valve 22 and the opening 51 is maximized.
  • the compressed gas PQ is more easily introduced into the gas introduction space 60, and the supply flow rate Q increases.
  • FIG. 3 (b) shows the governor 20 when the air motor 10 is rotating.
  • the steel balls 25 move radially outward due to the centrifugal force.
  • the steel ball 25 moves to the tip end side of the governor rod 21 along the slope portion 24 b.
  • the steel ball 25 presses the governor valve 22 to the tip side of the governor rod 21 against the biasing force F of the spring 23.
  • the reaction force AF that the steel ball 25 presses the governor valve 22 increases as the rotational speed of the air motor 10 increases.
  • the reaction force AF exceeds the biasing force F of the spring 23
  • the governor valve 22 moves to the tip end side of the governor rod 21.
  • the supply flow rate Q decreases.
  • the amount of decrease of the supply flow rate Q increases as the rotational speed of the air motor 10 increases.
  • the maximum speed of the air motor 10 is limited, and the supply flow rate Q is adjusted so that the rotational speed of the air motor 10 does not exceed the allowable speed determined in consideration of safety.
  • the stopper 26 has a plurality of engaged portions 28 engaged with the pins 27.
  • the positions of the plurality of engaged portions 28 in the axial direction X are different from each other.
  • the stopper 26 is provided coaxially with the governor rod 21, and is rotatable relative to the governor rod 21 about the axial center of the governor rod 21.
  • the plurality of engaged portions 28 are disposed along a circle concentric with the axial center of the governor rod 21. More specifically, the stopper 26 has a first end face 26a facing in the valve opening direction X1 and a second end face 26b facing in the valve closing direction X2.
  • the first end face 26 a and the second end face 26 b are orthogonal to the axial center of the governor rod 21.
  • the other end of the spring 23 in the axial direction X abuts on the first end face portion 26 a.
  • a plurality of grooves 29 are formed in the second end face portion 26b.
  • the ends of the pins 27 fit into the plurality of grooves 29.
  • the bottom of the groove 29 is engaged with the pin 27. That is, the plurality of engaged portions 28 are bottoms of the plurality of grooves 29.
  • the second end face portion 26 b in the present embodiment corresponds to the “end face portion” in the claims.
  • the plurality of grooves 29 are formed in the second end face portion 26 b so as to extend in the radial direction of the stopper 26, and the inner ends of the both ends in the radial direction are opened toward the hollow portion of the stopper 26. doing. Further, a plurality of marks 26 c are provided in the second end face portion 26 b in correspondence to the plurality of grooves 29.
  • the second end face 26 b includes a first groove 29 1 , a second groove 29 2 , a third groove 29 3 , and a fourth groove 29 4 as the plurality of grooves 29. It is formed.
  • Each of the first groove 29 1 , the second groove 29 2 , the third groove 29 3 , and the fourth groove 29 4 is formed two by two in the second end face portion 26 b.
  • a first groove 29 1 of the depth L1, a second groove 29 second depth L2, the depth L3 of the third groove 29 3, the depth L4 of the fourth groove 29 4 are different from each other.
  • the depth L1 of the first groove 29 1 is less than the second groove 29 second depth L2, the second grooves 29 and second depth L2 smaller than the depth L3 of the third groove 29 3, the 3 groove 29 third depth L3 is smaller than the fourth groove 29 fourth depth L4. That is, depth L1 ⁇ depth L2 ⁇ depth L3 ⁇ depth L4.
  • the first engaged portion 28 as a plurality of engaged portions 28 1, the second engaged portion 28 2, third engaged portion 28 3, the fourth engagement portion 28 4, the first groove 29 1, second groove 29 2, third groove 29 3, a bottom of the fourth groove 29 4 are provided two on the stopper 26.
  • the first engaged portion 28 1 is positioned on the distal end side of the second engaged portion 28 2 than Gabanaroddo 21.
  • the second engaged portion 28 2 is located on the distal end side of the Gabanaroddo 21 than the third engaged portion 28 3.
  • the depth L3 ⁇ depth L4 in the axial direction X the third engaged portion 28 3 is positioned on the distal end side of the Gabanaroddo 21 than the fourth engagement portion 28 4.
  • the plurality of marks 26 c include one or more projections, and the grooves are any of the first groove 29 1 , the second groove 29 2 , the third groove 29 3 , and the fourth groove 29 4 according to the number of the projections. Can be identified. Therefore, for example, each groove can be identified by touching with a finger even in an environment where the light amount is not sufficient.
  • FIG. 6 (a) is a pin 27, shows the speed governor 20 when engaged with the first engaged portion 28 1.
  • the length of the spring 23 indicated as “length L11 ', the urging force of the spring 23 indicated as” biasing force F1', the stopper 26 The predetermined position to be positioned is referred to as "position P1".
  • FIG. 6 (b) is a pin 27, shows the speed governor 20 when engaged with the fourth engagement portion 28 4.
  • the length of the spring 23 indicated as “length L12 ', the urging force of the spring 23 indicated as” biasing force F2', the stopper 26 The predetermined position to be positioned is referred to as "position P2".
  • position P2 In FIG. 6A and FIG. 6B, the air motor 10 is not rotating. Further, the position P1 and the position P2 are determined based on the position of the first end face portion 26a.
  • the position P1 of the stopper 26 when the first engaged portion 28 1 a pin 27 is engaged the fourth engagement portion 28 4 Is positioned on the proximal end side of the governor rod 21 from the position P2 of the stopper 26 when the pin 27 is engaged, and the length L11 is shorter than the length L12.
  • the biasing force F1 becomes larger than the biasing force F2. That is, from when the person when the first engaged portion 28 1 a pin 27 is engaged pin 27 is engaged with the fourth engagement portion 28 4, the attachment of the spring 23 load (initial The load) increases.
  • the governor valve 22 is less likely to move in the valve closing direction X2 even if the rotational speed of the air motor is increased. Therefore, from when the person when the first engaged portion 28 1 a pin 27 is engaged pin 27 is engaged with the fourth engagement portion 28 4, the maximum speed of the air motor is increased . As described above, the maximum speed of the air motor is reset.
  • valve opening direction stopper 26 against the elastic force of the spring 23 pushing the X1, to release the engagement between the pin 27 and the first engaged portion 28 1.
  • the stopper 26 is rotated to a position where both ends of the pin 27 is fitted into two of the fourth groove 29 4, loosen the force to push the stopper 26 in the valve opening direction X1, pin 27 and the fourth engagement portion 28 4 And engage.
  • the speed governor 20 includes the mechanism (the stopper 26 and the pin 27) for adjusting the biasing force of the spring 23. Therefore, the maximum speed of the air motor can be easily reset.
  • the urging force of the spring 23 can be changed by a simple operation of pushing the stopper 26 in the valve opening direction X1 and rotating the stopper 26. Therefore, the maximum speed of the air motor can be easily reset again without performing a complicated operation such as disassembling the governor 20, for example.
  • the position in the axial direction X at which the stopper 26 is positioned is stepwise You can change it. Since the position of the stopper 26 can be changed stepwise, the maximum speed of the air motor 10 can be set to the desired maximum speed without requiring a high level of learning. For example, in a mechanism that changes the position of the stopper 26 steplessly in the form of a screw, the user can sufficiently set the relationship between the operation amount (screw rotation amount), the displacement amount of the stopper 26 and the change amount of the maximum speed. Until grasped, the maximum speed of the air motor 10 can not be set to the desired maximum speed in a few trials. That is, in the stepless mechanism, a high level of skill is required to set the maximum speed of the air motor 10 to the desired maximum speed.
  • the stopper 26 has the plurality of engaged portions 28 in which the positions in the axial direction X are different from each other. Therefore, the biasing force of the spring 23 can be adjusted simply by switching the engaged portion 28 engaged with the pin 27, and the maximum speed of the air motor can be easily reset.
  • the stopper 26 is rotatable relative to the governor rod 22 centering on the axial center of the governor rod 22, and the plurality of engaged portions 28 are formed in a circle concentric with the axis of the governor rod. Arranged along. Therefore, only by rotating the stopper 26, the engaged portion 28 engaged with the pin 27 can be switched, and the maximum speed of the air motor can be easily reset.
  • the plurality of engaged portions 28 are bottom portions of the plurality of grooves 29 formed in the second end face portion 26 b and having different depths in the axial direction X from each other. Therefore, when the stopper 26 is rotated with the governor rod 21 by the rotation of the air motor 10, the engaged portion 28 engaged with the pin 27 is not switched freely, and the setting of the maximum speed of the air motor 10 can be stably maintained. For example, in a mechanism that changes the position of the stopper 26 steplessly in a screw manner, it is also conceivable that the stopper 26 rotates relative to the governor rod 21 when the stopper 26 rotates with the governor rod 21 by the rotation of the air motor 10.
  • the biasing force of the spring 23 is adjusted by the engagement between the plurality of engaged portions 28 and the pins 27.
  • the biasing force may be adjusted by, for example, sandwiching shims of various thicknesses between the governor valve 22 and the spring 23.
  • sandwiching shims of various thicknesses between the governor valve 22 and the spring 23.
  • the spring 23 has a male screw formed on the outer peripheral surface on the tip end side of the governor valve 22 and a female screw formed on the inner peripheral surface of the stopper 26.
  • the biasing force is adjusted steplessly by screwing the male screw and the female screw. May be However, in this configuration, as described above, it takes a high degree of learning to set the maximum speed of the air motor to the desired maximum speed. Further, as described above, it is also conceivable that the stopper 26 rotates with respect to the governor rod 21 when the stopper 26 rotates with the governor rod 21 by the rotation of the air motor 10.
  • the governor 20 is provided in an air grinder as a kind of air tool, but the invention is not limited thereto.
  • the governor according to the present invention may be provided in any machine as long as it is an air motor as a drive source.
  • the air tool is not limited to the air grinder, and may be an air sander or an air polisher.
  • the plurality of marks 26 c include one or more protrusions, but is not limited thereto.
  • the plurality of marks 26c may be any as long as they can indicate differences in the plurality of grooves 29, and may include numbers, letters, and symbols. Alternatively, the plurality of marks 26c may include one or more recesses.

Abstract

La présente invention concerne un régulateur de vitesse (20) destiné à un moteur pneumatique (10) qui règle la vitesse de rotation du moteur pneumatique. Le régulateur de vitesse (20) est pourvu d'une tige de régulateur (21), d'une soupape de régulateur (22), d'un moyen de sollicitation (23), d'un moyen de pression (24, 25), et d'un moyen de réglage (26, 27). La soupape de régulateur est disposée de manière à être mobile le long de l'axe de la tige de régulateur, et à augmenter ou à réduire le débit d'écoulement d'un gaz comprimé à alimenter au moteur pneumatique. Le moyen de sollicitation vient en butée contre la soupape de régulateur au niveau d'une partie d'extrémité axiale de cette dernière, et sollicite la soupape de régulateur dans le sens d'ouverture de la soupape dans lequel le débit d'écoulement d'alimentation augmente. Le moyen de pression génère une force de traînée qui s'accroît lorsque la vitesse de rotation du moteur pneumatique s'accroît, et se comprime, contre la force de sollicitation du moyen de sollicitation sollicitant la soupape de régulateur, la soupape de régulateur dans le sens de fermeture de soupape dans lequel le débit d'écoulement d'alimentation décroît. Le moyen de réglage règle la force de sollicitation. En résultat, la vitesse maximale du moteur pneumatique peut être facilement réinitialisée.
PCT/JP2017/042791 2017-11-20 2017-11-29 Régulateur de vitesse pour moteur pneumatique, et outil pneumatique WO2019097733A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201780094804.4A CN111344113B (zh) 2017-11-20 2017-11-29 气动马达的调速器及气动工具
PH12020550659A PH12020550659A1 (en) 2017-11-20 2020-05-18 Speed governor for air motor, and air tool

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-222514 2017-11-20
JP2017222514A JP6959641B2 (ja) 2017-11-20 2017-11-20 エアモータの調速機、及びエアツール

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WO2019097733A1 true WO2019097733A1 (fr) 2019-05-23

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PCT/JP2017/042791 WO2019097733A1 (fr) 2017-11-20 2017-11-29 Régulateur de vitesse pour moteur pneumatique, et outil pneumatique

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JP (1) JP6959641B2 (fr)
CN (1) CN111344113B (fr)
PH (1) PH12020550659A1 (fr)
WO (1) WO2019097733A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2402972A (en) * 1944-11-20 1946-07-02 Independent Pneumatic Tool Co Centrifugal governor for tools
JPS4817780U (fr) * 1971-07-08 1973-02-28
JPS611601U (ja) * 1975-02-28 1986-01-08 ローベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング 回転する圧力空気モータ
JPH11320455A (ja) * 1998-03-16 1999-11-24 Kr Kogyo Kk 空気回転工具の回転速度調節装置
JP2008534308A (ja) * 2005-04-05 2008-08-28 アトラス・コプコ・ツールス・アクチボラグ 排気消音器を備えた空気圧式動力工具
US20150158165A1 (en) * 2013-12-06 2015-06-11 Ingersoll-Rand Company Impact Tools With Speed Controllers

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2193927Y (zh) * 1994-05-27 1995-04-05 范学林 柴油汽车功率调控器
CN2231338Y (zh) * 1995-03-22 1996-07-17 上海船厂 气动马达钢球式离心调速器
SE0702834L (sv) * 2007-12-20 2009-06-09 Atlas Copco Tools Ab En gasdriven rotationsmotor, ett verktyg försett med en gasdriven rotationsmotor och en metod för att reglera rotationshastigheten hos en gasdriven rotationsmotor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2402972A (en) * 1944-11-20 1946-07-02 Independent Pneumatic Tool Co Centrifugal governor for tools
JPS4817780U (fr) * 1971-07-08 1973-02-28
JPS611601U (ja) * 1975-02-28 1986-01-08 ローベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング 回転する圧力空気モータ
JPH11320455A (ja) * 1998-03-16 1999-11-24 Kr Kogyo Kk 空気回転工具の回転速度調節装置
JP2008534308A (ja) * 2005-04-05 2008-08-28 アトラス・コプコ・ツールス・アクチボラグ 排気消音器を備えた空気圧式動力工具
US20150158165A1 (en) * 2013-12-06 2015-06-11 Ingersoll-Rand Company Impact Tools With Speed Controllers

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Publication number Publication date
CN111344113A (zh) 2020-06-26
JP6959641B2 (ja) 2021-11-02
JP2019093456A (ja) 2019-06-20
CN111344113B (zh) 2023-05-16
PH12020550659A1 (en) 2021-04-26

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