• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    537 546 Summary Portable tool (1), in particular screw tool (1) with an electric motor drive (6) and a drive body (4) rotatable about a given axis, with a registration device (2), which registers at least one physical food value, which is characteristic of the outgoing drive process with the outgoing drive body (4) and with a transfer device (10), which transfers the physical parameter without contact from a rotating area of the tool to a standing ornamental (54, 56) on the tool (1) , the transfer device (10) having a rotor coil (12) and a stator coil (14) and the rotor coil (12) rotating relative to the stator coil (14). In accordance with the invention, the stator coil (14) is challenged without a bar in an area between the stator coil (14) and the rotor coil (12).
    公开号:SE537546C2
    申请号:SE1250624
    申请日:2012-06-14
    公开日:2015-06-09
    发明作者:Andreas Fluhrer；Manuel Rieger；Achim Kugler
    申请人:Bosch Gmbh Robert；
    IPC主号:
    专利说明:

    Description The present invention relates to a barbaric tool and in particular to a barbaric screw tool. Such barbaric tools have long been known from the state of the art, for example in the form of hand screwdrivers, cordless screwdrivers or even hand drills. According to the state of the art, such tools are also known, which have a wireless feed signal transmission, for example the transmission of fed torque data, from a rotating area on the tool to a standing area on the tool. Thus, EP 2 246 680 A2 describes a power tool with a non-contact torque feed device and a method for feeding the torque of a power tool. In this case a first coil is provided and a second coil arranged at the drive shaft or motor shaft, which is connected to a torque sensor.
    Thus, this device allows a non-contact signal transmission, which is used in food sensors for stationary tools. However, this type of signal transmission has the disadvantage that it takes up a relatively large amount of space and is therefore rather unsuitable for barbaric devices. In addition, such transfer devices also require very stable bearing devices in order to be able to maintain the very small gap between the two above-mentioned coils even under load, more specifically in order to also in operation avoid a contact between the [Dada coils.
    The present invention therefore forms the basis for the task of making a barbaric tool available, which allows a transfer of the food value, such as torque data.
    This information is resolved through the Foralan for the Independent Claims. Advantageous embodiments and further trainings are subject to the subclaims.
    A barbaric tool in accordance with the invention and in particular a screw tool has an electric motor drive shaft as an outgoing drive body rotatable about a given axis, which is specially designed to carry out a working process. Furthermore, the tool has a recording device, which registers at least one physical parameter (respectively a food value), which is characteristic of this outgoing drive process with the outgoing drive body saval as a transfer device, which to the physical parameter and a signal characteristic of this parameter, respectively. a rotating area on the tool to a standing area on the tool. In this case, this transfer device has a rotor coil and a stator coil, the rotor coil rotating relative to the stator coil.
    In accordance with the invention, the stator coil is made without a bar in an area between 2,537,546 stator coil and rotor coil.
    It is therefore proposed that a so-called stator-free coil be inserted for the stator coil and the coil arranged in general radially with respect to an axis of rotation on the outside.
    This statorless coil, which can also be called an air coil, is for the non-contact signal transmission.
    At the above-mentioned outgoing drive body, for example, a head, such as a screw head, can be arranged. By a bar-free design of the coil is meant in particular that there is no bar, which carried the coil Than the radial inside.
    Due to the lack of such a carrier, it is possible to increase the distance between the coils, which are used for non-contact signal transmission. In this way, the process safety, especially for the use of accumulator- or night-driven tools for the mobile screw technology, can be improved. Due to the loss of the above-mentioned coil carrier for the stator coil, it is more precisely possible to exclude a contact between the coils, and by enlarging the air gap it is also possible to avoid expensive storage devices. By the standing area of the tool is meant in particular such an area which does not move towards, for example, the user's hand, which hails the tool, as a separate housing area or elements arranged fixedly opposite the housing part, such as the stator coil and the like. The output drive body is then heist designed in a single part with a feed shaft, which registers the physical parameter and the food value, respectively. In the case of food value, it can directly be a registered value, however, it could also be possible to transmit signals which are derived from the food value and which in particular are also characteristic of this food value. Furthermore, it is possible to reduce the energy requirement at the same signal power, since two coils, which are used for non-contact signal transmission, can be arranged closer to each other by the stator coil being challenged as an air coil. By using a so-called air coil, it thus becomes possible to enlarge the gap between the [Dada-named coils, which are used for the non-contact signal transmission. One clars ClarfOr especially Than stator flush bar.
    In general, the dead coils are a rotating signal transmitting device and a standing signal transmitting device, which is particularly sensitive to inductive signals.
    Advantageously, a radial air gap> 0.2 mm between the rotor coil and the stator coil, lift> 0.4 mm, preferably> 0.5 mm and aura lift> 0.6 mm. Advantageously, the air gap can thus increase to, for example, 0.7 mm, which increases the process safety, while the risk of contact between the dead coils is reduced.
    In a further advantageous embodiment, the stator coil is arranged at a bar, this bar being at least partially radially arranged outside the stator coil. In particular, the stator coil can be arranged or embedded in or embedded in a radially outer bar, for example a housing or a bar part.
    The stator coil is therefore advantageously embedded in a bar material. The fixed thing stall of the bar coil therefore passes through a holding device, which hails the stator coil radially from the outside. 4,537,546 In a further advantageous embodiment, Maga is about the bar material of a casting resin. The stator coil is highly cast with a Wepox casting resin (VT3000), which is formed on the basis of epoxy resin. By using such a resin, it is possible that only a slight warning development arises and also a slight shrinkage pressure.
    In a further advantageous embodiment, the stator coil is mounted by means of a bearing device and in particular by means of a ball bearing through a rotating area on the tool (especially an output drive shaft or feed shaft). Furthermore, the tool advantageously has a storage device, which is intended, for example, for storing the calibration data of the feed shaft and the outgoing drive body, respectively (possibly with the air group building coil). For example, a circuit board may be provided with a so-called EEPROM. This circuit board can be integrated in the entire construction coil of the air coils. By means of the above-mentioned connection of the air coil to the feed shaft through a ball bearing, it can be achieved that the distance between the coils can not vary. This could arise if the stator coil were cast directly into, for example, the half-shells of the accumulator- and night-part-driven tools, especially as regards the mobile screw technology in the ken.
    In a further advantageous embodiment, the physical parameter is selected than a group of parameters, which includes torque, speed, angles of rotation, electric currents, electric voltages, combinations thereof and the like. In the case of the recording device, it is advantageously a torque recording device which may, for example, contain a strain gauge strip and which is for recording the outgoing 537,546 torque of the output drive body and the feed shaft, respectively. In Maga onn the physical parameter and nnatvardet, respectively, it is above all about such a parameter or food value, which changes during the work process.
    In a further advantageous embodiment, the tool has an energy storage device for driving the electric motor. In particular, a boat in each accumulator is intended to be used in such a way that the tool can be driven by itself without a power cord.
    In a further particularly preferred embodiment, the tool has a receiving device for wirelessly receiving control data for controlling the tool. From a central unit, for example, a predicted maximum torque can come. Furthermore, the tool advantageously also has a signal output device for wireless sanding of control data. For example, the measured torque values can be output to a central control device and this can, by reacting to these values, control the torque and a power supply to the operation, respectively.
    In a further advantageous embodiment, the tool therefore also has an operating device for controlling the working process, for example a screw process.
    The operating device is therefore advantageously laminated to control the screw process on the basis of the above-mentioned (especially fed) physical parameter.
    The tool always has a feeding device for feeding the physical parameter. This feeding device is therefore advantageously rotatably arranged in the working operation.
    The present invention is further directed to a transfer device for wireless and particularly inductive transfer of a physical feed value and a parameter in a screw process, which with respect to a given axis of rotation has a rotatably arranged rotor coil, which acts as a transmitter device for the physical parameter and a rotationally fixed stator coil. which acts as a receiving device for the physical parameter. In this case, one of the coils, and in particular the rotor coil, is arranged in a direction radially with respect to the axis of rotation within the other coil.
    According to the invention, a carrier for the radially outer coil, in particular the stator coil, is designed in such a way that a space between the coils is substantially left without a carrier. In this way, as mentioned above, the gap between the dead coils can be increased.
    Further advantages and embodiments appear from the accompanying drawings: Dan i shows: Fig. 1 a schematic view of a tool according to the invention; Fig. 2 is a sectional view of a recording unit; and Fig. 3 is a perspective view of the recording unit. Figure 1 shows a schematic view of a part of a tool barbarous according to the invention. This barbaric tool then has a drive device (not shown), as an electric motor, which via a transmission (not shown) drives one in its entirety. with 4 designated output drive shaft 4 rotating about an axis of rotation D. This output drive shaft also functions as a feed shaft for feeding physical parameters, as a separate to a rotated torque. Furthermore, the tool has a registration device in its entirety denoted by 2, which registers a physical parameter of a work process. This recording device 2 has a stretching strip 28, with the aid of which a torque, for example an transmitted torque, can be recorded.
    This output drive shaft 4 is then rotatably mounted relative to a housing part 52, which can be designed as a pot. The reference numeral 42 refers to an outgoing drive head, at which, for example, a screw means can be arranged.
    The reference numeral 18 strongly schematically denotes an electrical transmission line for transmitting the electrical signals to a transmission device in its entirety designated 10, which wirelessly conveys the rotating circumference of the output drive body 4 to a stationary area of the tool opposite the measured values. The reference numeral 30 denotes the standing area of the tool in its entirety.
    This recording device 10 then has a rotor coil 12, which is arranged at a carrier 22.
    The reference numeral 14 denotes a stator coil, which, as an initial name, is 8 537 546 is a challenge without a bar and respectively as an air coil and is held by a holding device 16, for example is molded into this holding device. The male reference numeral 30 may denote a stationary. ' housing part, at which, for example, the stator coil 14 can also be arranged. The coil 14 can then be challenged as a double winding with two wires, which can, for example, be soldered to a circuit board. The reference numeral S denotes a gap which is formed between the stator coil 14 and the rotor coil 12. This is larger than in the prior art due to the bare design of the stator coil.
    The reference numeral 54 may denote a storage device as an EEPROM. This storage device 54 is then arranged on a circuit board 56.
    This circuit board can then also be designed as a unit with the carrier unit 16 for the stator coil 14.
    Next to the bearings 32, (schematically) further bearings 36 are produced, which likewise rotatably bear the outgoing drive body 4. The reference numeral 44 denotes electrical leads which carry the signal of the stator coil 14 further. The reference numeral 38 denotes (likewise only heavily schematic) a transmission in its entirety, which is interconnected between a (particularly electric) drive device 6 and the outgoing drive body 4 and which in front of it always shifts down a rotational speed of the drive device.
    Figure 2 shows a further representation of the transfer device 10. It is again discernible that the stator coil 14, which is arranged at the holder device 16. The storage device 54 has also been removed, the son can be arranged at the holder and bar device 16, respectively.
    Figure 3 shows a perspective view of the transfer device 10. In this case, the reference numeral 64 refers to a connection device for removing the fed values, whereby also a cable or wireless transfer device can be provided, which transfers the feed values per beam to a central unit (not shown). . The reference numeral 62 denotes an opening, with the aid of which a housing part, which for example can only the stator coil, can be screwed on with the housing part 60.
    The applicant reserves the requirement that all disclosed features in the application documents are essential to the invention, unless the individual or in combination are new to the state of the art. 537 546 List of male designations 1barbar tool 2registering device 4outgoing drive shaft 6drive device Transmission device 12rotor coil 14stator coil 16 holder device 18electric transfer line 22 bar 28 strain gauge strip standing housing part 32 bearings 36 further bearings 38 transmission 42outgrowth drive head housing6selectric housing Column 12
    权利要求:
    Claims (10)
    [1]
    A barbaric tool (1), in particular a screw tool (1) with an electric motor drive (6) and an output drive body (4) rotatable about a given axis, with a recording device (2), which at least instantly records a physical food value which is characteristic for the outgoing drive process with the outgoing drive body (4) and with a transfer device (10), which faces the physical food value without contact from a rotating area on the tool to a standing area (30) on the tool (1), the transfer device (10) having a rotor coil (12) and a stator coil (14) and the rotor coil (12) rotate relative to the stator coil (14), characterized in that the stator coil (14) is challenged as an air coil in an area outside the rotor coil (12).
    [2]
    Barbaric tool (1) according to claim 1, characterized in that a radial air gap between the rotor coil (12) and the stator coil (14) is greater than 0.2 mm, heist greater than 0.4 mm, heist greater than 0.5 mm and aura is greater than 0.6 mm.
    [3]
    A portable tool (1) according to any one of the preceding claims, characterized in that the stator coil is arranged at a bar (16), which bar is at least partially arranged radially outside the stator coil.
    [4]
    Barbaric tool (1) according to one of the preceding claims, characterized in that the stator coil (14) is cast in a bar material.
    [5]
    Barbaric tool (1) according to claim 4, characterized in that the barbar material is a casting resin.
    [6]
    A portable tool (1) according to any one of the preceding claims, characterized in that the stator coil (14) with the aid of a bearing device and in particular with the aid of a ball bearing is mounted against a rotating area of the tool.
    [7]
    A barbaric tool (1) according to any one of the preceding claims, characterized in that the physical food value is selected from a group of food values, which includes torque, speed, angles of rotation, electric currents, electric voltages, combinations thereof and the like.
    [8]
    Barbable tool (1) according to at least one of the preceding claims, characterized in that the tool (1) has an energy storage device for driving the electric motor.
    [9]
    Barbable tool (1) according to at least one of the preceding claims, characterized in that the tool has a receiving device for wireless reception of control data for controlling the tool (1).
    [10]
    Transmission device (10) for wireless and particularly inductive transmission of a physical feed value of a screw sequence with a rotor coil (12) rotatably arranged with respect to a given axis of rotation (D), which functions as a transmitter device for the physical feed value and a rotationally fixed device stator coil (14), which functions as a receiving device for the physical parameter, one of the coils (12, 14) being arranged in a radial direction with respect to the axis of rotation (D) within the other coil (14, 12), characterized in that the stator coil (14 ) is designed as an air coil in an area on the outside of the rotor coil (12). 537 546 1/2 0 (c) 537 546
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    法律状态:
    优先权:
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