CN110625575A

CN110625575A - System comprising a hand-held power tool, a first and a second attachment, and hand-held power tool or attachment

Info

Publication number: CN110625575A
Application number: CN201910542633.8A
Authority: CN
Inventors: A·乌尔里希
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2018-06-22
Filing date: 2019-06-21
Publication date: 2019-12-31
Also published as: DE102018210186A1

Abstract

The invention relates to a system comprising a hand-held power tool, a first accessory and a second accessory, wherein the hand-held power tool has at least one interface which is designed to connect the hand-held power tool to the first accessory and/or the second accessory, wherein the interface comprises a mechanical interface unit and an electrical interface unit. It is proposed that the interface comprises a communication interface unit.

Description

System comprising a hand-held power tool, a first and a second attachment, and hand-held power tool or attachment

Technical Field

The invention relates to a system comprising a hand-held power tool, a first and a second attachment, and to a corresponding hand-held power tool or attachment.

Background

DE 202012001853U 1 discloses an electric power tool having: an interface via which the electric power tool can be mechanically and electrically connected to the battery pack: and an additional connection which can be electrically conductively connected to the battery pack and is provided for attaching an external electrical appliance, via which the external electrical appliance can be supplied with energy from the battery pack.

Disclosure of Invention

The invention relates to a system comprising a hand-held power tool, a first accessory and a second accessory, wherein the hand-held power tool has at least one interface which is designed to connect the hand-held power tool to the first accessory and/or the second accessory, wherein the interface comprises a mechanical interface unit and an electrical interface unit. It is proposed that the interface comprises a communication interface unit. The interface can thus advantageously be used to transfer data and information to different accessories.

The hand-held power tool is designed as a hand-held, in particular hand-guided, power tool which is portable during machining. The hand-held power tool can be designed as an electric drill, an electric hammer, an electric pick, an angle grinder, an eccentric grinder, a saw, a screwdriver, an impact drill screwdriver, a grinding tool or the like. The hand-held power tool can be designed as a mains-powered appliance, which can be attached to a power supply device, for example an electrical grid or a generator, via a cable. Alternatively, the hand-held power tool can also be designed as a battery-operated hand-held power tool, which can be supplied with energy by at least one battery pack. The hand-held power tool has a drive unit which includes an electric motor. Furthermore, the hand-held power tool has a tool receiver in which the insertion tool can be releasably fastened, in particular. The insertion tool can be designed as a drill, chisel, cutting disk, grinding disk, batch head or the like, depending on the type of hand-held power tool. The tool receiver is coupled with the drive unit such that the drive motion can be transferred from the electric motor to the plug-in tool. Preferably, the drive motion is transmitted from the drive unit to the tool receiver via a transmission.

The accessory has at least one function in the mounted state on the hand-held power tool, which function is different from the pure data processing function. The accessory can be configured, for example: a shield for the angle grinder for protecting an operator; a dust extraction device for removing dust from a work location of the hand-held power tool; an additional handle for providing an additional gripping surface for an operator; or the like. Additionally or alternatively, the accessory can also have at least one function that can be electronically controlled by the control unit. The accessory can be designed, for example, as a work position lighting device or a measuring device, for example, a drill depth measuring device. It is also conceivable for the attachment to have its own drive unit, for example a motor, which controls and drives the fan of the vacuum cleaner via a control unit.

The accessory is in particular releasably connectable to the hand-held power tool via the interface. A releasable connection is to be understood in particular as a connection that can be released without tools. The mechanical interface unit is designed for a force-locking and/or form-locking connection between the hand-held power tool and the first attachment and/or the second attachment. The mechanical interface unit preferably comprises a guide element, for example a guide rail or a guide groove, which is configured for guiding during the connecting process. Furthermore, the mechanical interface unit preferably comprises at least one actuating element by means of which the locking between the hand-held power tool and the first attachment and/or the second attachment is unlocked. The actuating element can be configured, for example, as a pushbutton or a switch. Preferably, the mechanical interface unit comprises at least one latching element, which is designed to lock the hand-held power tool to the first attachment and/or the second attachment.

The communication interface unit is configured to exchange data and information. The communication interface unit has, in particular, an electronic device, which is designed to receive and/or transmit data via at least one communication contact element. The electronic device preferably has a circuit board, a microcontroller and/or a memory unit. The operating information can be transmitted or exchanged between the hand-held power tool and the first and/or second accessory via the communication interface, for example. The operating information may relate, for example, to an operating state of the hand-held power tool, for example, an on/off state. The operating information can also relate to operating modes, for example operating modes with low or high rotational speeds of the insertion tool or electric motor, operating modes with high or low torques, etc. The tool information can be transmitted or exchanged between the hand-held power tool and the first accessory and/or the second accessory via the communication interface, for example. The appliance information may relate to, for example, an identification or a firmware upgrade of the hand-held power tool and/or the accessory. Preferably, the first attachment and/or the second attachment are configured to be controllable or adjustable via the communication interface unit.

Furthermore, it is proposed that the mechanical interface unit is designed to mechanically connect the housing of the hand-held power tool to the housing of the first accessory and/or to the housing of the second accessory. The housing of the hand-held power tool is in particular designed as an outer housing in which the drive unit is arranged. The housing is preferably of multi-part design and can be made of a metallic material and/or plastic. The housing of the hand-held power tool comprises, in particular, at least one grip region or handle which is formed in one piece with the housing. The housing of the accessory is preferably designed as an outer housing in which, for example, a functional unit, a drive unit or a control unit of the accessory can be arranged. The mechanical connection is preferably realized by a force-locking and/or form-locking connection. The housing of the first attachment and/or the second attachment can be fastened directly to the housing of the hand-held power tool. Alternatively, it is also conceivable that the housing of the first attachment and/or the second attachment can be fastened indirectly, for example via a releasably fastened attachment handle, to the housing of the hand-held power tool.

Furthermore, it is proposed that the electrical interface unit be designed to interconnect the hand-held power tool with the first accessory and the second accessory in such a way that energy can be transmitted from the hand-held power tool to the first accessory or the second accessory for supplying power to the first and second accessory. In particular, the electrical interface unit has two electrical contact elements, namely a positive contact and a negative contact.

It is also proposed that the communication interface unit has at least one contact element assigned to the hand-held power tool and a contact element assigned to the first or second attachment, which contact elements are designed to transmit information in a mutually contacting state.

Furthermore, it is proposed that the electrical interface unit and the communication interface unit are designed in an integrated manner, in particular as a USB interface. A particularly compact construction can advantageously be achieved thereby. In particular, the electrical interface unit and the communication interface unit are arranged in a plug or socket.

Furthermore, it is proposed that the USB interface be arranged on a housing of the hand-held power tool and/or on a housing of a battery pack of the hand-held power tool. The hand-held power tool and/or the battery pack may each have one, two or more USB interfaces. It is advantageously possible in this way to supply energy to a plurality of accessories simultaneously via the USB interfaces or to supply energy to one accessory with very high power.

It is also proposed that at least 100 watts, in particular at least 120 watts, preferably at least 150 watts, of power can be transmitted via the interface, in particular via at least one USB interface.

The invention also relates to a hand-held power tool or a battery pack as described above.

Drawings

Further advantages are obtained from the following description of the figures. The figures, description and claims contain a number of combinations of features. Those skilled in the art can also view these features individually and generalize them to other combinations of significance. In the different embodiments shown, identical or similar features are provided with the same reference numerals and are characterized by an additional letter.

The figures show:

fig. 1 is a side view of a hand-held power tool according to the invention, with a first attachment;

fig. 2 is a side view of the hand-held power tool with a second attachment;

fig. 3 is a side view of the hand-held power tool with a third attachment.

Detailed Description

Fig. 1 shows a system 10, which comprises a hand-held power tool 12 and an accessory 100. The hand-held power tool 12 is designed, for example, as an electric hammer. The hand-held power tool 12 has a housing 14, which is designed as an outer housing. In the housing 14, a drive unit 18 with an electric motor 16 and a transmission 20 with an impact mechanism are arranged. At the front end of the hand-held power tool 12, a tool receiver 22 is arranged for receiving an insertion tool 24, which may be configured, for example, as a rock drill or chisel bit. Depending on the operating mode of the hand-held power tool 12, the insertion tool 24 can be driven in rotation about the working axis 26 or in an impact along the working axis 26. A handle 28 is arranged on the rear end of the hand-held power tool 12. The handle 28 damps vibrations caused by the percussion mechanism during operation of the hand-held power tool 12 via the damping unit 30. An operating switch 32 is arranged on the handle 28, by means of which the hand-held power tool 12 can be switched on and off or controlled. Arranged below the handle 28 is a battery receptacle 34, by means of which a battery pack 36 is releasably fastened to the housing 14 of the hand-held power tool 12. The battery pack 36 has a battery pack housing 38 in which ten battery cells are arranged in two layers, for example. The battery pack 36 is designed as a replacement battery pack which is removed from the hand-held power tool 12 for charging and is connected to a charger, not shown. The hand-held power tool 12, in particular the drive unit 18 of the hand-held power tool 12, is supplied with energy via the battery pack 36. Furthermore, the hand-held power tool has an interface 40, via which the hand-held power tool 12 can be connected to the attachment 100. The interface 40 includes a mechanical interface unit 42, an electrical interface unit 44, and a communication interface unit 46.

The attachment 100 is designed as a dust suction device, via which the drill cuttings at the machining site can be sucked off during operation of the hand-held power tool 12. The accessory 100 has a housing 102 in which a drive unit 104 is arranged. The drive unit 104 includes an electric motor 106 that drives a fan 108. The accessory 100 also has a dust chamber 110 which can be releasably secured in the housing. A filter element, for example a pleated filter, is arranged in the dust chamber 110. The attachment 100 also has a suction head 112 at its front end on the end side. The suction head 112 is supported so as to be linearly movable by a telescopic unit 114. The suction head has a cylindrical opening 116 through which the plug-in tool 24 is sunk during the drilling process. In the region of the cylindrical opening 116, a suction opening of a dust suction device is arranged, through which the drill cuttings are received and conveyed into the dust collection chamber 110 by means of an air flow generated by the fan 108.

The housing 14 of the hand-held power tool 12 is releasably connected to the housing 102 of the attachment 100 via the mechanical interface unit 42. The connection is effected in particular by means of force-locking and/or form-locking connections by means known to the person skilled in the art, for example guide elements and latching connections corresponding to one another. The mechanical interface unit 42 furthermore comprises an operating element 118, which is arranged on the housing 102 of the accessory 100. The actuating element 118 advantageously releases the latching connection or locking between the hand-held power tool 12 and the attachment 100.

The electrical interface unit 44 and the communication interface unit 46 are integrated and are designed, for example, as a USB interface 48, in particular as a USB interface Typ cpd. The tool-side USB interface 48 is designed, for example, as a socket. In the connected state of the accessory 100, the USB interface 48 of the hand-held power tool 12 is mated with the corresponding USB interface 120 of the accessory 100. The USB interface 120 of the accessory is, for example, configured as a plug.

The USB interface 48 of the hand-held power tool 12 is connected to an electronic device 50, which is arranged in the housing 14 of the hand-held power tool 12. Furthermore, a USB interface 48 of hand-held power tool 12 is connected to battery pack 36, in particular to battery pack 36 via an electronic device 50. The USB interface 120 of the accessory 100 is connected to the electronics 122 of the accessory 100. In particular, the USB interface 120 of the accessory is connected to the drive unit 104, preferably via electronics 122. The accessory 100 can thus be supplied via the USB interface 48 by means of the battery pack 36 connected to the hand-held power tool 12 b. Preferably, the USB interface is configured to deliver between 80 watts and 120 watts, preferably approximately 100 watts of power.

The electronic device 50 of the hand-held power tool 12 is connected to the electronic device 122 of the attachment 100 via the USB interface 48. For example, the device information, for example, the device information relating to the model or type of hand-held power tool 12 and/or the model or type of battery pack 36, can thus be transmitted to accessory 100, in particular to electronic device 122 of accessory 100, via electronic device 50 of hand-held power tool 12. Alternatively or additionally, it is conceivable to transmit the device information, for example the model or type of the attachment 100, to the hand-held power tool 12, in particular to the electronic device 50 of the hand-held power tool 12, via the electronic device 122 of the attachment 100. Advantageously, it is possible to ascertain via the electronic device 50 of the hand-held power tool 12 and/or the electronic device 122 of the accessory 100: whether these appliances can function with each other as specified. Furthermore, it is likewise conceivable for the drive unit 104 of the attachment 100 to be controlled by sending control signals from the hand-held power tool 12 or the electronic device 50 of the hand-held power tool 12 to the electronic device 122 of the attachment 100 via the USB interface 48.

The attachment 100 designed as a vacuum cleaner does not have its own energy supply, for example. However, it is also conceivable for the accessory 100 to have a battery pack for energy supply and to transmit only data or information for identification and/or control via the USB interface 48. Likewise, the arrangement or fastening point of the attachment 100 on the hand-held power tool 12 is to be regarded as an example. The attachment 100 is fastened, for example, to the front side 52 of the hand-held power tool 12, which faces the tool receiver 22. It is likewise conceivable for the attachment 100 designed as a suction device to be fastened next to the hand-held power tool 12. It is also contemplated that the attachment 100 may be secured to the attachment handle 54. The additional handle 54 is preferably releasably connected to the hand-held power tool 12, in particular to the housing 14 of the hand-held power tool 12. An additional handle 54 is arranged in the region of the tool receiver 22.

In fig. 2, the hand-held power tool 12 of fig. 1 is connected to a further accessory 100a via an interface 40. The accessory 100a is designed as a work position lighting device and has a housing 102a in which a functional unit 126a with a lighting element 124a is arranged. The lighting element 124a is preferably configured as an LED lighting device. The mechanical interface unit 42 is arranged on the additional handle 54 of the hand-held power tool 12, so that the attachment 100a can be fastened to the additional handle 54 of the hand-held power tool 12. The accessory 100a has a USB interface 120a on its side facing away from the lighting element 124a, which is designed, for example, as a socket. Since the housing 14 of the hand-held power tool 12 does not rest directly on the housing 102a of the attachment 100a, the USB interface 48 of the hand-held power tool 12 and the USB interface 120a of the attachment 100a are connected to one another via the connecting line 61. The accessory 100a can thus be advantageously connected to the battery pack 36 for energy supply via the hand-held power tool 12. The device information can preferably be transmitted, in particular exchanged, between the hand-held power tool 12 and the attachment 100a via the USB interface 48. Advantageously, the attachment 100a can furthermore be controlled by the electronic device 50 of the hand-held power tool 12. The accessory 100a can be used, for example, by way of the electronic device 50 to switch the lighting intensity of the accessory 100a on or off or to adjust it during operation of the hand-held power tool 12.

In fig. 3, the hand-held power tool 12 of fig. 1 is connected to a further accessory 100b, which is designed as a measuring device. The measuring device is designed, for example, as a distance measuring device, by means of which a distance 127 between the attachment 100b and the workpiece 128 to be machined can be determined. The accessory 100b has a housing 102b in which a sensor 130b of the functional unit 126b is arranged. The hand-held power tool 12 is connected to the attachment 100b via the interface 40. The mechanical interface unit 42 here connects the housing 14 of the hand-held power tool 12 to the housing 102b of the attachment 100b by means of a force fit and a form fit. The USB interface 48 of the hand-held power tool 12 and the USB interface 120b of the attachment 100b are constructed and connected analogously to fig. 1. Also arranged in the housing 102b of the accessory 100b is an electronic device 122b, by means of which the sensor 130b can be controlled or regulated. Preferably, the data acquired by sensor 130b is at least temporarily stored in electronic device 122 b. The sensor 130b may be configured, for example, as an optical sensor or an ultrasonic sensor. The accessory 100b, which is designed as a measuring device, is supplied with energy via the USB interface 48 via the energy supply device or the battery pack 36 of the hand-held power tool 12. Furthermore, the device information of hand-held power tool 12 and accessory 100b is exchanged via USB interface 48. The data determined by sensor 130b can be transmitted from electronic device 122b of accessory 100b to hand-held power tool 12 via USB interface 48. The electronic device 122b of the accessory 100b and/or the electronic device 50 of the hand-held power tool 12 can advantageously determine the drilling depth from the data determined by the sensor 130 b.

The hand-held power tool 12 shown has, for example, a single USB interface 48, which is arranged on a front side 52 of the housing 14. The number and arrangement of which are to be considered here as examples. It is likewise conceivable for the hand-held power tool 12 to have a second USB interface 48' which is arranged on an upper side 58 of the hand-held power tool 12 (see fig. 1). Alternatively or additionally, a USB interface 48 "(see fig. 2) may also be arranged on the underside 60 and/or the lateral side 62 of the hand-held power tool 12 or in the region of the handle 28. It is also conceivable to arrange one or more battery sites on the battery casing 36. It is advantageously possible to supply energy via a plurality of USB interfaces 48, 48', 48 ″ either simultaneously to a plurality of accessories 100 and/or via a plurality of USB interfaces to a single accessory with a high energy requirement, such as a vacuum cleaner.

Claims

1. A system comprising a hand-held power tool (12), a first accessory (100) and a second accessory (100a), wherein the hand-held power tool has at least one interface (40) which is designed to connect the hand-held power tool (12) to the first accessory (100) and/or to the second accessory (100a), wherein the interface (40) comprises a mechanical interface unit (42) and an electrical interface unit (44),

it is characterized in that the preparation method is characterized in that,

the interface (40) includes a communication interface unit (46).

2. The system according to claim 1, characterized in that the mechanical interface unit (42) is configured for mechanically connecting the housing (14) of the hand-held power tool (12) to the housing (102, 102a) of the first and/or second accessory (100, 100 a).

3. The system according to one of the preceding claims, characterized in that the electrical interface unit (44) is configured for interconnecting the hand-held power tool (12) with the first and/or second accessory (100, 100a) such that energy can be transferred from the hand-held power tool (12) to the first and/or second accessory (100, 100a) for supplying power to the first and/or second accessory (100, 100 a).

4. The system as claimed in one of the preceding claims, characterized in that the communication interface unit (46) has at least one contact element assigned to the hand-held power tool (12) and one contact element assigned to the first or second attachment (100, 100a), the contact elements assigned to the hand-held power tool and the contact elements assigned to the first or second attachment (100, 100a) being designed to transmit information in a mutually contacting state.

5. System according to one of the preceding claims, characterized in that the electrical interface unit (44) and the communication interface unit (46) are configured integrally, in particular as a USB interface (48).

6. The system according to claim 5, characterized in that the USB interface (48) is arranged on a housing (12) of the hand-held power tool (100) and/or on a battery pack housing (38) of a battery pack (36) of the hand-held power tool (12).

7. The system according to claim 5 or 6, characterized in that the hand-held power tool (12) and/or the battery pack (36) has a second USB interface (48', 48 ").

8. System according to one of the preceding claims, characterized in that a power of at least 100 watts, in particular at least 120 watts, preferably at least 150 watts, can be transferred through the interface (40), in particular through at least one USB interface (48).

9. The system according to one of the preceding claims, characterized in that the first and/or second accessory (100, 100a) is configured as a dust extraction device (100), a lighting device (100a) or a measuring appliance (100 b).

10. Hand-held power tool or battery pack for a system according to one of the preceding claims.