Handheld pulling and compressing device

Abstract

The invention relates to a hand-held pulling and compressing device for driving an interchangeable tool, comprising a drive unit, the drive unit includes a battery-driven motor, a threaded driver having a threaded spindle connected to the drive unit and rotatably mounted on the housing body, and a nut rotatably mounted on the threaded spindle via a bearing unit and non-rotatably mounted on the housing body, and a coupling unit connected to the tool holder for transmitting tension and compression force generated by the rotation direction of the threaded mandrel from the nut to the tool holder. In order to provide a hand-held pulling and compressing device that can be used flexibly, a housing body is provided having a connection section for removably securing a tool device to the pulling and compressing device.

Description

Technical Field

[0001] The present invention relates to a hand-held pulling and compressing device for driving interchangeable tools, which has

[0002] - a drive unit having a battery-powered electric motor,

[0003] - a threaded drive having a threaded spindle (6) connected to the drive unit and rotatably mounted on the housing body, and a nut rotatably mounted on the threaded spindle via a bearing unit and non-rotatably mounted on the housing body, and

[0004] - A coupling unit, which is connected to the tool holder, for transmitting the tension and compression forces resulting from the rotational direction of the threaded spindle from the nut to the tool holder. Background Art

[0005] Hand-held pulling and compressing devices, i.e. devices that can be used by a person in a mobile manner, for example for setting blind rivet elements (e.g. blind rivets and blind rivet nuts) or for performing a punching process and for installing punch rivets, are known in the prior art in a number of embodiments. The screw drive converts the rotary motion of the electric motor into a linear motion of the pulling and compressing tool in a known manner. During the operation of installing the blind rivet element, for example, the mandrel of the blind rivet element is moved axially.

[0006] The above-mentioned riveting and crimping devices are used, for example, in vehicle workshops for repair work on vehicle bodies and for maintenance work on pipe or cable connections. Depending on the work to be performed, it is necessary to drive a variety of different interchangeable tools with the riveting and crimping devices. Even the known handheld devices that can operate both pulling and compression tools have the disadvantage of limited connection and / or drive options for the interchangeable tools. Summary of the invention

[0007] Based on this, an object of the present invention is to provide a handheld pulling and compressing device that is flexible in use.

[0008] The invention solves this object by a hand-held pulling and compressing device having the features of claim 1. Further advantageous embodiments of the invention are given in the dependent claims.

[0009] The hand-held pulling and compressing device according to the present invention is characterized in that the housing body of the hand-held pulling and compressing device has a connecting section for detachably fixing the tool device to the pulling and compressing device.

[0010] The tool device is a different structural unit that can be driven by the tension / compression device, for example, a device for converting tension and compression forces or another type of adapter. If the hand-held pulling and compression device is designed to also be used to drive a rotating tool device, the tool device can also be formed, for example, by an articulated device that allows the tool device to be pivoted relative to the pulling and compression device.

[0011] The housing body of the hand-held pulling and compressing device according to the invention is designed with a connection section for detachably fastening different tool devices to the pulling and compressing device, so that these tool devices can be arranged on the hand-held pulling and compressing device according to the application by a corresponding tool device design. By providing a preferably standardized connection section, the range of use of the hand-held pulling and compressing device can be significantly increased, so that a wide variety of work can be carried out by using different tool devices of the hand-held pulling and compressing device, in particular if, according to a further development of the invention, the device is also designed to drive a rotationally operated tool device.

[0012] In principle, the tool device can be fastened to the housing body of the hand-held pulling and compressing device in any manner. It is conceivable here, for example, that the connecting section is designed with a thread, which makes it possible to fasten the tool device with a corresponding thread to the connecting section of the pulling and compressing device. However, according to an advantageous embodiment of the invention, it is provided that the connecting section has a quick coupling which can be adjusted between a locked position and an unlocked position.

[0013] The use of a quick coupling is characterized in that the operator can adjust the quick coupling quickly and effortlessly between an unlocked position, in which the tool device can be arranged on the connecting section or removed from the connecting section, and a locked position, in which the tool device is fixed to the connecting section of the pulling and compressing device. The quick coupling is characterized in particular in that an additional tool for removing or arranging the tool device can be omitted. Thus, the design of a hand-held pulling and compressing device with a quick coupling enables the tool device to be quickly and easily replaced or mounted on or removed from the pulling and compressing device.

[0014] In principle, the quick coupling can be adjusted between the unlocked position and the locked position in any manner, for example, the quick coupling can be designed so that it can be mechanically adjusted between the unlocked position and the locked position by an operator. However, according to an advantageous further development of the invention, a quick coupling is provided which can be adjusted between the unlocked position and the locked position by an electric drive.

[0015] The use of an electric drive for operating the quick coupling, i.e. adjusting it between an unlocked position and a locked position, increases the comfort of the hand-held pulling and compression device in a special way. By means of the electric drive, incorrect operation of the quick coupling is also minimized or completely avoided.

[0016] An additional increase in operational safety can be achieved by a further advantageous embodiment of the hand-held pulling and compressing device, in that the quick coupling has a sensor unit for detecting a state and a display unit connected to the sensor unit for indicating the state of the quick coupling. According to this embodiment of the invention, the state of the quick coupling can be detected by the sensor unit, i.e., in particular, it can be determined whether it is in an unlocked position or a locked position. The state detected by the sensor unit can then be indicated to the operator of the pulling and compressing device via the display unit, which is, for example, a suitable signal light, whereby operational safety can be increased in a supplementary manner.

[0017] According to another embodiment of the invention, it is further provided that the sensor unit is designed with a communication unit for transmitting the detected state to the drive unit. According to this embodiment of the invention, the state of the quick coupler determined by the sensor unit is transmitted to the drive unit or to a control unit controlling the drive unit via the communication unit. In a corresponding embodiment of the control unit, the operation of the pulling / compression device can be prevented if the sensor unit does not indicate to the drive unit that the quick coupler is in an operationally safe position.

[0018] For transmitting the sensor data to the drive unit via the communication unit, the communication unit can be designed in any manner, for example it can be designed for wireless and wired data transmission, wherein the Bluetooth standard is preferably used for wireless data transmission.

[0019] In principle, the quick coupler can be designed in any way provided that it is ensured that it can be adjusted between the unlocked position and the locked position in a simple and fast manner, thereby enabling a quick exchange or installation and removal of the tool device. According to a further development of the invention, a quick coupler is provided with a ball latch mechanism having a locking ring and a coupling ring, the coupling ring having a plurality of openings, each opening having a ball latch body, wherein the locking ring is arranged coaxially with the coupling ring, the coupling ring and the ball latch body matching each other so that in the locked position the ball latch body is arranged partially in the opening so that the ball latch body protrudes from the inner side of the coupling ring and is fixed in place in this locked position by the locking ring, and in the unlocked position the ball latch body can be moved into a released position.

[0020] The locking ring is understood to be an annular design, which preferably has a circular cross section. For better handling, for example, its outer side can have gripping elements or gripping structures. The coupling ring is also arranged coaxially with the locking ring and, like the locking ring, is preferably circular in cross section.

[0021] The opening in the coupling ring is adapted to the shape of the ball latch body. In order to avoid interference caused by the ball latch body sliding out of the opening, the opening is designed so that the ball cannot come out from the inner side of the coupling ring. This can be achieved, for example, by making the opening slightly conical. The shape of the openings is such that they protrude beyond the inner side of the coupling ring in the locked position. The locking ring can be adjusted relative to the coupling ring, in which the locking ring fixes the ball latch body in the locked position, i.e. in which the ball latch body partially protrudes from the inner side of the coupling ring. In the unlocked position, the locking ring allows the ball latch body to be moved into a released position, in which the ball latch body can be moved into the opening so that it no longer protrudes from the inner side of the coupling ring.

[0022] Therefore, the corresponding design of the pulling and compressing device makes it easy to arrange the tool device on the connecting section when the quick coupler is in the unlocked position. In this state, the ball latch body is in a position in the opening where it no longer protrudes from the inside, so that the tool device can be arranged coaxially with the inside of the coupling ring. The quick coupler is subsequently adjusted to the locked position, resulting in the ball latch bodies being displaced in the inside direction, so that these ball latch bodies partially protrude from the inside and engage with the corresponding connecting sections on the tool device, thereby preventing the pulling and compressing device from being displaced in the direction of the longitudinal axis, so that the tool device is reliably locked on the pulling and compressing device. A further development of the quick coupler with a ball latch mechanism also enables the tool device to be rotated relative to the pulling and compressing device around its longitudinal axis.

[0023] To remove the tool device, it is only necessary to adjust the locking ring to the unlocked position, which allows the ball latch bodies to be displaced into the openings so that they no longer protrude from the inside, thereby enabling the tool device to be removed.

[0024] In order to increase the operating safety, according to a further development of the invention, a locking unit is provided, which fixes the locking ring in the locked position. The locking unit can be, for example, a preferably spring-loaded locking bolt, which locks the locking ring in the locked position, so that the locking ring can only be adjusted from the locked position to the unlocked position after a corresponding displacement of the locking unit (for example the locking bolt). Faults or incorrect operation of the pulling and compressing device are thus prevented in a complementary manner.

[0025] According to another embodiment of the invention, it is also provided that the locking ring is rotatable relative to the coupling ring between a locked position and an unlocked position. A corresponding embodiment of the invention is characterized by the fact that the installation space can thus be selected to be particularly small and, moreover, malfunctions of the quick coupling are effectively prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] An embodiment of the present invention is explained below with reference to the accompanying drawings. As shown in the accompanying drawings:

[0027] Figure 1 A cross-sectional view of a schematic diagram of a pulling and compressing device with a tool device connected to a connecting section;

[0028] Figure 2 a schematic cross-sectional view of a quick coupler in an unlocked position, and

[0029] Figure 3 In locked position Figure 2 A schematic cross-sectional view of a quick connector. DETAILED DESCRIPTION

[0030] Figure 1 A schematic diagram of a hand-held pulling and compressing device 1 is shown, wherein a tool device 11 is connected to a connecting section 10 of a housing body 5 of the pulling and compressing device 1 .

[0031] To drive the threaded spindle 6 of the threaded drive 4, the hand-held pulling and compressing device 1 has a drive unit 2 with an electric motor 3 which can be controlled and regulated via a control unit 21. The drive unit 2 has an intermediate gear 22 for transmitting the rotational movement of the electric motor 3 to the threaded spindle 6.

[0032] Via the threaded drive 4, the rotational movement of the threaded spindle 6 driven by the drive unit 2 is converted into a translational movement of a tool holder designed as a piston rod 9 and connected to the coupling unit 8. The coupling unit 8 is connected to a nut 7, which is non-rotatably arranged relative to the housing body 5 of the pulling and compression device 1, so that due to the rotational movement of the threaded spindle 6, the nut 7 performs a linear movement along the longitudinal axis of the threaded spindle 6, which linear movement can be used to drive the tool holder designed as a piston rod 9.

[0033] exist Figure 1In the embodiment shown, the threaded spindle 6 of the threaded drive 4 is designed as a hollow shaft, in which the rotational axis 23 extends coaxially. The rotational axis 23 is non-rotatably connected to the drive unit 2, so that the rotational movement generated by the drive unit 2 can be transmitted to the corresponding tool device 11, which can be connected to the connecting section 10 independently of the adjustment stroke of the nut 7 on the threaded spindle 6. If the rotational axis 23 is used to drive the tool device 11, the threaded spindle 6 is separated from the drive unit 2 on the pulling and compression device 1, so that only the rotational axis 23 is set to rotate by the drive unit 2.

[0034] In order to detachably connect different tool devices 11 designed for connection to the coupling unit 8, the tool holder 9 and / or the rotation axis 23, the connecting section 10 of the housing body 5 of the pulling and compression device 1 has a quick coupling 12, which is connected to the coupling unit 8, the tool holder 9 and / or the rotation axis 23. Figure 2 is shown in its unlocked position, Figure 3 Shown in the locked position.

[0035] The quick coupler 12 has an outer locking ring 14, a coupling ring 15 and a ball latch body 16 arranged in an opening 17, which together form the ball latch 13. The ball latch bodies 16 are movably arranged in the opening 17, which are designed so that they partially protrude beyond the inner side 19 of the coupling ring 15 in the locked position, but the opening 17 is designed so that the ball latch bodies 16 cannot be moved out of the opening 17 beyond the inner side 19.

[0036] exist Figure 2 In the unlocked position shown, the ball latch body 16 arranged in the locked position can be moved in the direction of the locking ring 14 so that the ball latch body 16 is moved in the corresponding recess 18 on the inside of the locking ring 14, so that the ball latch body 16 no longer protrudes beyond the inside 19 of the coupling ring 15. In this position, the tool device 11 for the quick connector 12 can then be arranged coaxially with the locking ring 14, or the arranged tool device 11 can be removed from the connecting section 10.

[0037] Through the locking ring 14 Figure 2 The unlocked position shown is Figure 3 The displacement of the locking position shown fixes the tool device 11 arranged coaxially with the coupling ring 15 in a position on the connecting section 10 of the pulling and compression device 1, wherein the locking ring 14 then locks the ball latch body 16 in the Figure 3The locking position shown, in which the ball latch body 16 partially protrudes from the inner side 19 of the coupling ring 15 and forms a positive fit with the corresponding connecting section of the tool device 11 in the longitudinal direction of the pulling and compression device 1. In order to facilitate the adjustment, i.e. the rotation of the locking ring 14 by the operator between the unlocked position and the locked position, the locking ring 14 has a gripping element 20. The quick coupling 12 provides the possibility of rotating the tool device 11 about the longitudinal axis of the pulling and compression device 1 in the locked position.

[0038] Reference numerals list

[0039] 1 Pulling and compression device

[0040] 2 Drivers

[0041] 3. Electric Motor

[0042] 4 Threaded drive

[0043] 5. Shell body

[0044] 6 Threaded spindle

[0045] 7 Nut

[0046] 8 Coupling unit

[0047] 9 Tool holder (piston rod)

[0048] 10 Connection sections

[0049] 11 Tools and Equipment

[0050] 12 Quick Connector

[0051] 13 Ball latch

[0052] 14 Locking ring

[0053] 15 Coupling ring

[0054] 16 Ball latch body

[0055] 17 Opening

[0056] 18 concavity

[0057] 19 Inner side (coupling ring)

[0058] 20 Grip element

[0059] 21 Control unit

[0060] 22 Gear

[0061] 23 Rotation axis

Claims

1. A hand-held pulling and compressing device for driving interchangeable tools, having - a drive unit (2) comprising a battery-driven electric motor (3), - a threaded drive (4) having a threaded spindle (6) connected to the drive unit (2) and rotatably mounted on the housing body (5), and a nut (7) rotatably mounted on the threaded spindle (6) via a bearing unit and non-rotatably mounted on the housing body (5), and - a coupling unit (8) connected to a tool holder (9) for transmitting the tension and compression forces resulting from the rotational direction of the threaded spindle (6) from the nut (7) to the tool holder (9), It is characterized in that The housing body (5) has a connecting section (10) for detachably fixing a tool device (11) to the pulling and compressing device (1).

2. The handheld pulling and compressing device according to claim 1, characterized in that: The connecting section (10) has a quick coupling (12) which is adjustable between a locked position and an unlocked position.

3. The handheld pulling and compressing device according to claim 1 or 2, characterized in that: The quick connector (12) is adjustable between the unlocking position and the locking position by an electric drive device.

4. A hand-held pulling and compressing device according to any one of the preceding claims, characterised in that The quick coupler (12) comprises a ball latch (13) with a locking ring (14) and a coupling ring (15) having a plurality of openings (17), each opening having a ball latch body (16), the locking ring (14) being arranged coaxially with the coupling ring (15), the coupling ring (15) and the ball latch bodies (16) matching each other so that in the locked position the ball latch bodies (16) are arranged in the openings (17) so that they partially protrude from the inner side (19) of the coupling ring (15) and are fixed in the locked position by the locking ring (14), and so that in the unlocked position the ball latch bodies (16) can be displaced to a released position.

5. A hand-held pulling and compressing device according to any one of the preceding claims, characterised in that A locking unit is provided for fixing the locking ring (14) in the locking position.

6. A hand-held pulling and compressing device according to any one of the preceding claims, characterised in that The locking ring (14) is rotatable relative to the coupling ring (15) between the locking position and the unlocking position.

7. A hand-held pulling and compressing device according to any one of the preceding claims, characterised in that The quick connector (12) has a sensor unit for detecting a state and a display unit connected to the sensor unit for indicating the state detection.

8. A hand-held pulling and compressing device according to any one of the preceding claims, characterised in that A communication unit is provided for transmitting the detection of the state to the drive unit (2).

9. A hand-held pulling and compressing device according to any one of the preceding claims, characterised in that The quick connector (12) is electrically conductively connected to the drive unit (2).

Images