瑞典专利SE534183C2 Motor driven torque amplifier

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专利摘要:

公开号:SE534183C2
申请号:SE0701003
申请日:2007-04-26
公开日:2011-05-24
发明作者:John K Junkers；Peter Koppenhoefer；Calin Voicu；Neil Smith；Edward Kim
申请人:Unex Corp；
IPC主号:

专利说明:

20 25 30 534 183 2 There are many motorized torque tools on the market and some of them have two mechanisms for speed, some of them affect the bolt head, others with a counteracting ann. What they have in common is that no matter what torque or speed is achieved, their gearbox will be rotated in the opposite direction relative to the drive shaft. None of these provides a screw-on or unscrewing speed where the entire gear housing together with the internal gear assembly and output power drive rotates at the same high speed in the same direction.
There are also portable power tools on the market as shown in US 2,569,244, where a pressure on the tool against the fastener increases or decreases the entry of air and thus the output power for torque. However, there is no tool on the market where a pressure on the fastener changes rotation of the gear housing, its gears and its drive shaft in the same direction at the same speed to apply a torque to the gears and the drive shaft in one direction and at the same time an opposite rotating force to the gear housing. There are also hand-held power tools on the market where the engine torque can be reduced to increase the engine speed and thus the speed of the tool.
Likewise, the two mechanisms for speed of motorized torque tools usually operate in such a way that one or more of your planetary gears are disengaged in steps so that they retain the function of one. This reduces the gear ratio to achieve a higher speed and lower torque and so that once the nut stops, all steps of the planetary gear in operation will produce a higher torque at a lower speed. Despite this, the housing still wants to react in the opposite direction relative to the direction of rotation of the gears at small ratio and large ratio. In other words, while the drive and the gears absorb a rotating force in one direction, the housing absorbs the same rotating force in the opposite direction. The problem with this is that a high speed, the gears and the drive shaft rotate so fast in the gear housing that almost all rotating parts require storage, which makes the tool larger and heavier. 10 15 20 25 30 534 133 3 SUMMARY OF THE INVENTION An object of the present invention is to provide a torque-enhancing tool which eliminates the disadvantage of the prior art.
The torque enhancing tool of the present invention is based on the idea of stopping the generally smooth, simultaneous but opposite rotation for action and counteracting when high rotational speed of nut is required, avoiding that virtually all rotating parts require bearings.
In order to achieve these objects and other objects which will be clear below, a feature of the present invention is added in short by a torque-reinforcing tool for tightening and loosening threaded coupling means, comprising a torque-reinforcing member with a torque-reinforcing housing portion, and co-effect a first output means and a second output means; a drive operably coupled to said input means for transmitting a torque from said drive via said reinforcing means to a threaded coupling means, so that in a position for operation when the fastener has a relatively low torque friction said torque amplifying ring wheel portion together with said first means rotates in the same direction and at the same speed and torque as said input means, and in a different position for operation when the fastener has a relatively high torque friction which may exceed the torque of said input means, said torque amplifying ring wheel portion together with one of said first and second means torque in one direction while the second of said first and second output means occupies a corresponding (equal) torque in the opposite direction at a lower speed but a higher torque than said input means, and so that one of said first and second output means rotates in namely one and second positions for operation while the second of said first and second output means rotates in said one position for operation and counteracts said second position for operation.
For the tool according to the invention, in order to rotate the housing, the gears of the torque amplifier and the input and output means in the same direction at the same speed, the usually smooth and counter-rotating rotation of the parts must be temporarily blocked. This can be done in many ways.
For example, you can lock the gears so that they can not be rotated freely in the housing, or you can lock the planetary gears so that the sun gear can not rotate them, or you can lock the housing and shaft for output power so that they can not be rotated independently, or then you can lock the drive means and the counteracting drive or their attachments, or you can lock one part of the fastener with the other part if these are to be screwed together and then rotated independently of each other, etc.
To achieve the same result would. without having to turn the house. the gears and the shaft for output power and input power together can be very complex because then all or at least all but one gear must be temporarily disconnected, while in accordance with the present invention, the entire torque-enhancing ring gear is temporarily disconnected by only blocking two normally counter-rotating parts.
By means of the tool according to the present invention, when rotating a part of the threaded coupling member such as a nut and applying a driving force, an opposing force can be compensated by action against an adjacent object, for example against an adjacent nut, or against a other part of the threaded coupling member, for example a washer, or against a further part of the threaded coupling member, for example a sleeve, etc.
The new features which are considered to be characteristic of the present invention are set forth with particularity in the appended claims. However, the invention itself, both in its construction and in its method of operation, together with further objects and advantages thereof, will be best understood from the following description of the particular embodiments considered in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS 10 15 20 25 30 534 '183 Figs. 1a and 1b are illustrations showing a torque amplifying tool for tightening and loosening threaded coupling means in accordance with an embodiment of the present invention, wherein 1a is an illustration showing the tool in a position for operation and ﬁ g. 1b is an illustration showing the tool in a different mode of operation; Figs. 2a-2c are illustrations showing a torque amplifying tool in accordance with a further embodiment of the present invention, wherein ﬁ g. 2a is an illustration showing the tool in a position for operation, ﬁ g. 2b is an illustration showing the tool in a different mode of operation and ﬁ g. 2c shows the end of a tool; Fig. 3 is an illustration showing a torque amplifying tool for tightening and loosening threaded coupling means in accordance with a further embodiment of the present invention; and Figs. 4a-4b are illustrations showing a further embodiment of the torque amplifying tool according to the invention in two different positions for operation.
DESCRIPTION OF THE PREFERRED EMBODIMENTS A torque amplifying tool for tightening and loosening threaded coupling means has drive means identified in their entirety by reference numeral 1. The drive means 1 may have a greenhouse 2 and a drive identified as reference means 3 may be identified by reference numeral. a motor-driven means, in which case it may comprise a motor. It is also possible for the drive means 1 to be designed as a manual drive means, such as for instance a torque wrench. The drive means 1 generates a torque which is to be transmitted during operation.
According to the embodiment shown in ﬂ g. 1, the greenhouse 2 has a handle 4 to be held by a user and which is arranged with switching means 5 for switching the drive means between a non-driving position and a driving position.
The torque-reinforcing tool according to the present invention further has at least one torque-reinforcing member identified in its entirety by reference numeral 6. The torque-reinforcing member 6 has a torque-reinforcing ring wheel 1 and gear means. 1a and 1b, the gear means comprises a sun gear 8 (sun gear) with a shaft forming an input power means, planetary gears 9 and a planet holder 10. The torque-reinforcing ring wheel 7 is arranged with an internal gear 11 extending only over a longitudinal portion of the ring wheel 7.
The torque amplifying tool in accordance with the present invention further has a drive element which is identified in its entirety by reference numeral 12 and forms a first output means. The drive element 12 has a drive part 13 which can be formed such as, for example, a square drive and has a rear part 14 which is coupled for operation with the torque-reinforcing member, for example via splines in engagement. The coupling of the drive means 1 with the torque amplifying means 6 and the drive element 12 causes the transmission of torque from the drive means to the drive element. The torque amplifying means 6 may be constructed to provide any desired intensification of torque generated by the drive means 1.
The torque amplifying tool further has a counteracting element which is identified by reference numeral 15 and which forms a second output power means. The counteracting element 15 is arranged with means 16 for coupling with an element which acts against a fixedly mounted object, for instance a counteracting arm, for instance with splines. The counteracting element 15 is non-rotatably coupled to the torque-enhancing ring gear 7. According to the embodiment shown in ﬁ g. 1a and 1b, the counteracting element 15 is formed in an integral piece with the torque-enhancing ring gear.
The torque-enhancing tool has two different positions for operation. In a position for operation when the torque is transmitted from the drive means 1 via the torque amplifying means to the drive element 12, the drive element 12 provides a lower torque and a higher rotational speed. This is advantageous when it is necessary to rotate a part of the threaded coupling member, for example a nut, on another part of the threaded coupling member, for example a bolt, at a high speed until the nut abuts against a washer or against a surface of a component. In this mode of operation, the torque is transmitted from the drive means via the torque amplifying ring gear 7, the gears of the torque amplifier, the second output power means or the counteracting element 15, and the first 534 '1BB 7 output power means or drive element 12, so that it the torque amplifying ring gear 7 together with the first output means and the second output means is rotated in the same direction and with the same torque and speed as the input means. In another position for operation, the torque is transmitted from the drive means 1 via the torque amplifying means to the drive element 12 so that the torque amplifying ring gear 7 together with the second output means or the counteracting element 15 absorbs a torque in one direction. while the first output means or drive element 12 absorbs a corresponding torque in the opposite direction at a lower speed but higher torque than the input means.
To switch the tool between these two different positions has been achieved as shown in the embodiment according to ﬁ g. 1a and 1b, for example pressure elements 17 formed as pins or the like. When the nut rests against the washer, the pressure elements 17 are pressed, as in ﬁ g. 1a is illustrated in a position for operation to extend in the outward direction past the torque-enhancing ring gear 7 in an axial direction as shown in FIG. 1b, and the planetary gear 9 previously engaged with the internal gear 11 of the torque amplifying ring gear 7 is disengaged from the internal gear so that the first output means or drive member 12 and the second output means or counter element 15 can be rotated in opposite directions. It is to be understood that different means for shifting the torque amplifying tool between two different positions for operation are possible. In accordance with the present invention, in the torque amplifying tool, the torque amplifying ring gear 7 and the greenhouse 2 are functionally connected to each other. In particular, the torque-enhancing ring gear 7 can be rotated relative to the greenhouse 2. For this purpose, as shown in ﬁ g. 1a and 1b, a part of the greenhouse 2, which may comprise further torque-reinforcing means, may extend into the torque-reinforcing ring gear 7 and may be supported in the latter via a bearing 18. By means of this construction the torque-reinforcing ring wheel 7 can be freely rotated relative to the greenhouse 2 The greenhouse 2 can be formed as a housing, as a support, as a frame, etc. for the drive. This can also be achieved automatically by means of a switch once the required torque exceeds a given force.
According to a further embodiment of the present invention shown in ﬁg. 2a-2c, the first output means is formed as a drive socket 21 having a portion 22 having an angular inner surface for engaging the nut and a portion 23 having a polygonal outer shape. The second output means is likewise formed as an opposing base with a portion 24 having a polygonal shape for engaging an adjacent object, for example a washer, and a portion 25 having an inner polygonal opening configured to cooperate with the polygonal portion 23 of the drive base. The drive base has a receiving opening 26 in which a square drive 27 of a tool can be accommodated. A spline portion 28 of the tool is received in an internal adapter 29 for splines which is non-rotatably coupled to the opposing base.
The drive base is ﬂ superficial in the axial direction relative to the opposing base. In a position of operation, the portion 23 of the drive socket engages the portion 25 of the opposing socket so that the sockets are not rotatably interconnected relative to each other and to each other as shown in ﬁ g. 2a and the torque of the drive means 1 is transmitted via the torque amplifier to the drive base at the same speed and torque as the input means. In this position, the first and second output means rotate.
When the drive base as shown in ﬁ g. 2b is displaced in the axial direction, for example so that its portion 23 is disengaged from the portion 25 of the opposing base, the driving base and the opposing base are no longer coupled to each other in a non-rotatable relationship in the second position for operation and they rotate in opposite directions with the same rotating forces at a lower speed but with a higher torque than the input means. In this position, the first output means or the drive base rotates, while the second output means or the counter-socket counteracts (reacts).
According to this embodiment, in a position of operation, the torque-enhancing ring gear rotates together with the drive base and the counter-base socket in the same direction and at the same speed and torque as the input means, wherein in the second position of operation the torque-enhancing ring wheel together with the opposing base, a rotational force absorbs in one direction while the drive base absorbs the rotational force in the opposite direction.
It is to be understood that in the second position, the first and the second output means can both act as drive means or counteracting means in opposite directions depending on the use.
According to the embodiment shown in ﬁ g. 3 is a nut to be tightened or loosened identified by reference numeral 31, a bolt on which the nut is tightened or loosened is identified by reference numeral 32, and a washer is identified by reference numeral 33 and has a radially outer retaining portion 34 and one in radial direction inner portion 35 which may engage the bolt 32. Means are provided for transmitting torque in the two positions of operation. They may be formed such as, for example, contact pins 36 which engage in line with openings 38 of the nut and washer. In a position of operation, the pins 36 non-rotatably connect the nut to the washer so that they rotate together at the same speed and torque as the input means. After the nut rests against the washer and a torque increases, the pins 36 are disengaged, for example cut off, so that the nut is rotated at a higher torque and at a lower speed than the input means while the washer produces a counteract.
It is to be understood that the at least two modes described herein are merely examples. Additional positions may be added to said one or other position and / or said input power means and / or output power means.
While the torque amplifying tool described above is a two speed tool, the present invention is not limited thereto but may have your speeds, as shown, for example, in ﬁ g. 4a-4b. For example, the drive for operation may be coupled to the input power means of the torque amplifying means be configured as an intermediate greenhouse 10 15 20 25 30 534 'IBS 10 50 so that the drive comprises, for example, the greenhouse 2 and the intermediate greenhouse 50.
When two generally opposite rotating members are temporarily coupled to each other in the torque reinforcing member or at one end thereof and the intermediate greenhouse 50, which comprises at least one reinforcing unit such as a planetary gear ladder, is coupled to the torque reinforcing ring gear so as not to rotate relative thereto. the rotation of the torque amplifying ring gear together with the first and second output means has a speed and a torque generated from the driving housing portion 2. When the torque required to rotate the fastener exceeds the torque derived from the greenhouse 2 and the intermediate rotatable greenhouse 50 coupled to the greenhouse 2 b) and rotatably coupled to the torque amplifying ring gear, the rotation of the torque amplifying ring gear 7 together with the first and the second output means is at a lower speed but with a higher torque than that derived from d the grating housing 2. When the torque friction of the fastener is such that the tool is switched from one position to another, the torque applied to the fastener is increased once more while the rotational speed is further reduced. I ﬁ g. 4a, the intermediate greenhouse portion 50 is non-rotatably coupled to the torque amplifying ring gear 7, while in ﬁ g. 4b the intermediate greenhouse 50 is non-rotatably coupled to the greenhouse 2.
It is to be understood that each element described above, or two or ﬂ of them together, may be useful in other types of structures different from the types described above.
While the invention has been illustrated and described as being housed in a motor-driven torque amplifier, it should not be construed as being limited to the details shown, since various modifications and constructions may be changed without departing from the scope of the invention.
Without further analysis, the above will fully disclose the scope of the present invention so that others may, using general knowledge,

权利要求:
Claims (16)
[1]
Torque reinforcing tool (1) for tightening and loosening threaded coupling means, comprising at least one torque reinforcing means (6) with a torque reinforcing ring wheel portion (7), with input power means (8) and with a first output power means (12) and a second output means ); a drive (3) operably coupled to said input power means (8) for transmitting a torque from said drive (3) via said torque reinforcing means (6) to a threaded coupling means, so that in a first position for operation said torque amplifying ring wheel portion (7) together with said first (12) and second (15) output means rotate in the same direction and with the same speed and torque as said input means (8), and in a second position for operation said torque amplifying ring wheel portion (7) together with one of said first ( 12) and second (15) output means receives a torque in one direction while the second (15) of said first and second output means receives a corresponding torque in the opposite direction at a lower speed but a higher torque than said input means, and so that one of said first (12) and second (15) output means rotates in said one and second position for operation while the second (15) of said first and second output means rotate in said one position for operation and counteract in said second position for operation, characterized in that said first output means (12) is configured as a drive means for rotating a part of the threaded coupling means, while said second output means ( Is configured as an counteracting means for acting on rotating one part of the threaded coupling means, so that in the second position for operation said torque-reinforcing ring wheel portion (7) absorbs a rotating force together with said counteracting means while said drive means occupies the corresponding torsional force in the opposite direction.
[2]
The torque amplifying tool of claim 1, wherein said first output means (12) is configured as a drive socket for rotating a portion of the threaded coupling means, while said second output means (15) is configured as a counter socket for counteracting rotation of the threaded coupling means. one part of the threaded coupling means, so that in the second position for operation said torque-enhancing ring wheel portion (7) absorbs a torque together with said counterattack socket while said drive socket absorbs a corresponding force in the opposite direction.
[3]
Torque enhancing tool according to claim 1, and further comprising at least one driving housing portion; and means for driving the coupling of said torque-reinforcing ring gear portion (7) and said driving housing portion with each other so that they are rotatable relative to each other.
[4]
The torque amplifying tool of claim 3, and further comprising an intermediate driving housing portion (50) to provide at least three speeds for operation, comprising a small high speed torque in said one position when said intermediate driving housing portion (50) is rotatably coupled to said at least one driving housing portion and non-rotatably coupled to said torque amplifying ring gear portion (7), a larger average speed torque in said one position when said intermediate driving housing portion (50) is rotatably coupled to said at least one driving housing portion and rotatably coupled to said rotating 7), and at a low speed and maximum torque in said second position when the tool shifts from one position to another.
[5]
Torque amplifying tool according to claim 1, wherein said reinforcing ring wheel portion (7) is formed integrally with said counteracting means.
[6]
Torque amplifying tool according to claim 1, wherein said reinforcing ring gear portion (7) is coupled to said counteracting means via coupling means.
[7]
The torque amplifying tool according to claim 1, and further comprising means for coupling a portion of the threaded coupling means to another portion of the threaded coupling means and configured to be integral in said one position for operation and to disengage the portions of the threaded coupling means. the coupling means apart according to a construction in two parts in said second position for operation. 10 15 20 25 30 534 'IBB 14
[8]
The torque amplifying tool of claim 1, further comprising means for automatically shifting from one position of operation to the other position of operation when one portion of the threaded coupling member is connected to another portion of the threaded coupling member.
[9]
The torque amplifying tool of claim 1, and further comprising means for shifting from one position of operation to the other position of operation with a gear when one portion of the threaded coupling member is connected to another portion of the threaded coupling member.
[10]
Torque reinforcing tool according to claim 1, and further comprising means for shifting from one position of operation to the other position of operation by movement of the tool (1) in an axial direction of the threaded fastener when one portion of the threaded coupling member is connected to another portion of the threaded coupling member.
[11]
Torque amplifying tool according to claim 4, wherein said shifting from one speed to another takes place automatically.
[12]
Torque amplifying tool according to claim 1, wherein said drive (3) is constructed as a hand tool.
[13]
Torque amplifying tool according to claim 1, wherein said drive (3) comprises a motor with a motor housing.
[14]
Torque amplifying tool according to claim 1, wherein said drive (3) comprises a motor and at least one amplifier for increasing an output torque of said drive (3).
[15]
Torque amplifying tool according to claim 14, wherein said at least one torque amplifier is constructed to limit output torque of said drive (3) so that its counteracting force can be absorbed by a user. 534 'H33 15
[16]
The torque amplifying tool of claim 1, wherein said drive comprises a motor-driven torque tool

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法律状态:
2010-01-26| NAV| Patent application has lapsed|

优先权:

申请号 | 申请日 | 专利标题

US41470206A| true| 2006-04-28|2006-04-28|

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