Tool with torque limitation

Abstract

The invention relates to: a tool (1) comprising a device (2) for setting a torque limitation on an output shaft (3); a method for manufacturing the tool (1); and a method for setting the torque limitation, wherein the device (2) is arranged in a housing (4) and can be set using a setting element (5) by means of rotation about a rotational axis (6), wherein the setting element (5) is part of a handle (7) which has a proximal and a distal tool side (8, 9) which can be rotated with respect to one another, characterised in that the setting element (5) is arranged on a distal tool side (9) of the handle.

Description

[0001] Tool with torque limitation

[0002] The invention relates to a tool with a device for setting a torque limit on an output, wherein the device is arranged in a housing and can be adjusted by means of an adjusting element by rotating about an axis of rotation, wherein the adjusting element is part of a handle which has a proximal and a distal tool side which can be rotated relative to one another.

[0003] The invention further relates to a tool with a device for setting a torque limit on an output, wherein the device is arranged in a housing and can be adjusted by means of an adjusting element by rotating about a rotational axis, wherein the adjusting element is part of a handle which has a proximal and a distal tool side which can be rotated relative to one another, wherein a rotational movement on a handle part is implemented via a gear.

[0004] The invention further relates to a method for producing a tool , wherein the tool has a device for limiting torque and the device has a display element with which a set torque value can be displayed .

[0005] The invention further relates to a method for adjusting a torque on a tool.

[0006] The object of the invention is to improve torque-limiting tools. A further object of the invention is to improve methods for producing torque-limiting tools and methods for adjusting a torque on a torque-limiting tool.

[0007] To achieve the stated object, the features of claim 1 are provided according to the invention. In particular, to achieve the stated object, in a tool of the type described at the outset, the invention proposes that the adjusting element is arranged on a distal tool side of the handle. The handle of the tool can thus be designed in two parts, separated into the distal and the proximal tool side. This can, for example, make it possible to grip part of the handle with one hand and another part of the handle with another hand. The torque can be adjusted by twisting the two handle parts. In this way, high torques can be applied to the handle by a user. The distal tool side is to be understood as the side that is closer to a blade of the tool than the proximal tool side.The proximal side is therefore further away from the blade of the tool than the distal side of the tool and, for example, closer to a user's hand.

[0008] In many cases the axis of rotation will coincide with or be parallel to a longitudinal axis of the tool.

[0009] In an advantageous embodiment, the tool can be provided with a receptacle for a blade, wherein the receptacle is formed on the distal side of the handle. This can, for example, make it possible for the blade to be inserted into the receptacle, where it can be releasably secured. The torque set on the tool can be transferred to the blade.

[0010] In an advantageous embodiment, it can be provided that the proximal and distal tool sides are movable relative to one another along a longitudinal axis of the tool. This can, for example, make it possible for the two tool sides, or the two handle parts, to move in the direction of the longitudinal axis. This movement can cause the two tool sides to lock together and to release from one another. Alternatively or additionally, it can be provided that the two tool sides can be connected to one another in a rotationally secure manner. This can, for example, make it possible for the two tool sides to be connected in such a way that the two tool sides cannot rotate against one another. In particular, it can be provided that the two tool sides can be locked together.This can, for example, allow the distal and proximal tool sides to move toward each other along the longitudinal axis and lock into each other. This can prevent the two tool sides from accidentally detaching from each other.

[0011] In an advantageous embodiment, it can be provided that locking means for connecting are formed on the distal side of the tool. Alternatively or additionally, it can be provided that locking means for connecting are formed on the proximal side. Alternatively or additionally, it can be provided that counter-locking means for connecting are formed on the distal side of the tool. Alternatively or additionally, it can be provided that counter-locking means are formed on the proximal side of the tool. This can, for example, make it possible for the locking means and counter-locking means to interact and create a connection with one another. In particular, the locking means and / or counter-locking means are designed to connect both sides of the tool. This can, for example, make it possible for the distal and proximal sides of the tool to be connected to one another with the aid of the locking means and / or counter-locking means.The connection can be a detachable, force-locking connection.

[0012] In an advantageous embodiment, it can be provided that a dividing line that axially separates the distal and proximal tool sides from one another lies in a gripping area. This can, for example, make it possible for both tool sides to be advantageously rotatable at the dividing line, since a high torque can be applied there particularly favorably. Alternatively or additionally, it can be provided that the dividing line that separates the adjusting element from the housing lies in a gripping area. This can, for example, make it possible for the adjusting element and the housing to be designed separately from one another. In particular, it can be provided that the dividing line lies in a range between a maximum grip diameter of the handle and a minimum grip diameter of the handle. This can, for example, make it possible for the maximum

[0013] The handle diameter allows the handle to be gripped particularly firmly and securely to adjust the torque. In particular, the dividing line can be positioned between a maximum handle diameter of the housing and a minimum handle diameter of the adjustment element. This can, for example, make it possible to adjust the torque setting on the adjustment element with minimal effort for the user.

[0014] In an advantageous embodiment, it can be provided that the housing has the maximum handle diameter. This can, for example, ensure that the housing is easy to grip and sits securely in the hand. This also allows, for example, the housing to be gripped with one hand while the adjusting element is rotated with the other hand. Alternatively or additionally, it can be provided that the housing is biconvex. This can, for example, ensure that the housing sits particularly well and securely in the user's hand.

[0015] In an advantageous embodiment, it can be provided that the adjusting element has the minimum handle diameter. This can, for example, ensure that the adjusting element fits comfortably in the hand and can be gripped with one hand. Alternatively or additionally, it can be provided that the adjusting element is biconvex. This can, for example, ensure that the adjusting element advantageously fits comfortably and securely in the hand.

[0016] In an advantageous embodiment, it can be provided that the adjusting element has the minimum grip diameter at a distance from a distal end of the handle. This can, for example, ensure that the adjusting element can be gripped securely in order to adjust the torque.

[0017] In an advantageous embodiment, it can be provided that torque is transmitted from the adjusting element to a gear element. This can, for example, ensure that the gear translates a rotary movement of the adjusting element into slow motion and enables small-scale adjustment of the torque. In particular, the torque is transmitted to the gear via a roller bearing, wherein the roller bearing is axially and / or radially movable about the longitudinal axis of the tool. This can, for example, ensure that torque is transmitted to the output when the housing and the adjusting element are in an open position, i.e. are not locked together.

[0018] In an advantageous embodiment, the adjusting element can be provided with a thread, by means of which it is mounted in a threaded sleeve in the housing. This can, for example, make it possible to convert a rotational movement of the adjusting element into a rotation of the thread, whereby the thread can exert pressure on a spring that effects the torque adjustment.

[0019] In an advantageous embodiment, it can be provided that the housing is connected to the output in a rotationally fixed manner. This can, for example, make it possible for a rotational movement of the housing to cause a rotational movement of the output or the blade. Alternatively or additionally, it can be provided that the adjusting element is movable relative to the output. This can, for example, make it possible for the adjusting element to be rotatable and to effect the torque adjustment of the tool.

[0020] In an advantageous embodiment, it can be provided that the adjusting element drives a gear element. This can, for example, make it possible for the gear element to cause the gear ratio to slow down and for a rotation of the adjusting element to cause the thread to rotate more slowly. In particular, it can be provided that the gear element has a thread. This can, for example, make it possible for the thread to compress or stretch the spring and thus adjust the torque of the tool. In particular, it can be provided that the thread is an external thread. This can have design advantages, such as a compact design of the housing.

[0021] Alternatively or additionally, to achieve the stated object, the features of the independent claim directed to a tool are proposed according to the invention. In particular, it is thus proposed that a rotary movement on a handle be implemented via a gear. This can, for example, make it possible for the gear to translate the rotary movement, for example, into a slower speed, and enable a finely granular adjustment of the torque on the tool.

[0022] In an advantageous embodiment, the gearing can be arranged in the power transmission between the handle and a display element. This can, for example, ensure that the power is transmitted to the gearing and that the set torque can be displayed on the display element.

[0023] In an advantageous embodiment, it can be provided that the gear unit is a cycloidal gear unit. This can, for example, enable power transmission without gears, whereby low wear is achieved. Cycloidal gear units can have a longer service life than worm gear units because even load distribution can be ensured within the cycloidal gear unit. Contact between a cycloidal disk and a housing can be established, for example, via rollers and ball bearings, which can lead to low-wear operation. Cycloidal gear units can, for example, manage without gears and are therefore not exposed to shear forces, which can also increase the service life of the gear unit. In particular, it can be provided that an eccentric element is rotationally connected to the housing.This can, for example, make it possible for a rotation of the housing to adjust the torque. Alternatively or additionally, rollers of the cycloidal gear can be arranged on the indicator element. This can, for example, make it possible for the indicator element to be part of the gear, thus requiring fewer parts, which has a positive effect on a compact and cost-effective tool design.

[0024] In an advantageous embodiment, the transmission element can be provided through the gear mechanism. This can, for example, make it possible to transmit a rotation of the adjustment element to the gear mechanism, thus allowing the torque on the tool to be adjusted. The transmission element can extend from the adjustment element through the gear mechanism into the housing.

[0025] Alternatively or additionally, the features of the independent claim directed to a tool are proposed according to the invention to achieve the stated object. In particular, it is thus proposed that a set torque be displayed via a display element coupled to the gear mechanism. This can, for example, make it possible for a user to read the set torque on the display element.

[0026] In an advantageous embodiment, it can be provided that the display element is arranged on the distal side of the tool. In this way, it can be achieved, for example, that the display element is arranged on the gear on the setting element where the torque is set, which is why no additional parts are required. Alternatively or additionally, the features of the independent claim directed to a method for producing a tool are proposed according to the invention to achieve the stated object. In particular, it is thus proposed that a marking for displaying the set torque is applied to the display element after its installation. In an advantageous embodiment, it can be provided that the tool can be fully assembled before the marking is applied.Each assembled tool can be individually tested and adjusted before a marking appropriate for the respective tool is applied to its display element. This has the advantage that errors in torque setting and errors due to manufacturing tolerances as well as installation errors in the display element can be reliably avoided. Each tool is therefore unique, with its own optimally adjusted spring adjustment range. In particular, the marking can be a scale. In an advantageous embodiment, it can be provided that the user can easily read the torque from the scale. In particular, it can be provided that the marking is lasered. This can, for example, make it possible for the marking to be applied quickly and automatically.

[0027] Alternatively or additionally, to achieve the stated object, the features of the independent claim directed to a method for adjusting a torque on a tool are proposed according to the invention. The method comprises the following steps:

[0028] - an axial movement of a distal and a proximal

[0029] The tool sides are moved against each other using a handle. In particular, the movement can involve pulling the distal and proximal tool sides apart. This can release the locking of the two tool sides.

[0030] - setting a torque value by rotating the distal and proximal tool sides relative to each other

[0031] - an axial movement of the distal and proximal tool sides using a handle. In particular, the movement can involve inserting the two tool sides into one another. This can result in a locking of the two tool sides.

[0032] The invention will now be described in more detail using an exemplary embodiment, but is not limited to the exemplary embodiment. Further exemplary embodiments result from combining the features of one or more claims with one another and / or with one or more features of the exemplary embodiment.

[0033] It shows :

[0034] Fig. 1 shows a tool in section in an open position,

[0035] Fig. 2 shows the tool in a sectional view in a locking position,

[0036] Fig. 3 the tool in perspective view in a locking position,

[0037] Fig. 4 the tool in perspective view in an open position,

[0038] Fig. 5 the tool in perspective view without a proximal handle,

[0039] Fig. 6 the tool in perspective view in partially cutaway representation and

[0040] Fig . 7 a detailed view of the tool .

[0041] Fig. 1 shows the tool 1, designated as a whole by 1, which has a device 2 for setting a torque limit on an output 3. The device 2 for setting a torque is arranged in a housing 4. The setting is carried out with an adjusting element 5 by rotation about an axis of rotation 6. The adjusting element 5 is part of a handle 7 of the tool 1. The handle 7 has a proximal tool side 8 and a distal tool side 9 which can be rotated relative to one another. The proximal tool side 8 is closer to a user during operation of the tool 1 than the distal tool side 9. The adjusting element 5 is arranged on the distal tool side 9 of the handle 7.

[0042] The tool 1 has a receptacle 10 for a blade 11, wherein the receptacle 10 is formed on the distal tool side 9 of the handle 7. The blade 11 can be fastened in the receptacle 10 by a locking mechanism 12.

[0043] The proximal tool side 8 and the distal tool side 9 are movable relative to each other along a longitudinal axis 13 of the tool 1 and can be locked together in a rotationally secure manner.

[0044] On the distal and proximal tool sides 8, 9, locking means 14 and counter-locking means 15 are formed for connecting both tool sides 8, 9. The locking means 14 and counter-locking means 15 create a force-locking connection that can be released when a tensile force is applied that is large enough to overcome a frictional force of the connection.

[0045] Fig. 1 and 3 show the tool 1 in a locking position, with the proximal and distal

[0046] Tool side 8, 9, or the housing 4 and the adjusting element 5 are locked together.

[0047] Fig. 2 and 4 show the tool 1 in an open position, wherein the proximal and distal tool sides 8, 9, or the housing 4 and the adjusting element 5 are not locked together.

[0048] The proximal tool side 8 and the distal tool side 9 are axially separated from each other by a dividing line 16. The dividing line 16 also separates the adjustment element 5 from the housing 4. The dividing line 16 lies in a grip area 17 between a maximum grip diameter 18 of the handle 7 or the housing 4 and a minimum grip diameter 19 of the handle or the adjustment element 5.

[0049] The housing 4 has a maximum handle diameter of 18 and is biconvex. The adjustment element 5 has a minimum handle diameter of 19 and is biconcave. The minimum handle diameter 19 is spaced from the distal end 20 of the handle 7. The minimum handle diameter 19 is where the biconcave shape of the adjustment element 5 has its minimum diameter.

[0050] Torque is transmitted from the adjusting element 5 to a gear element 21 via a roller bearing 22. The roller bearing is axially and radially movable around the longitudinal axis 13 of the tool 1.

[0051] The adjusting element 5 has a thread 23, by which it is mounted in a threaded sleeve 24 in the housing 4. The housing 4 is rotationally connected to the output 3, whereby a rotational movement can be transmitted from the housing 4 to the output 3 and the blade 11. The adjusting element 5 is movable relative to the output 3, whereby the torque on the tool 1 can be adjusted.

[0052] The gear element 21 is driven by the adjusting element 5, wherein the gear element 21 has an external thread 25.

[0053] The rotary movement on a handle part 26 is transmitted via a gear

[0054] 27 implemented. In the power transmission, the gear 27 is arranged between the handle part 26 and an indicator element 28. In the exemplary embodiment, the gear 27 is a cycloidal gear, wherein an eccentric element 29 is connected in a rotationally fixed manner to the housing 4 and rollers 30 of the cycloidal gear are arranged on the indicator element 28. The gear 27 is penetrated by the gear element 21. The gear element 21 thus extends from the adjusting element 5 across the dividing line 16 into the housing 4 of the tool 1.

[0055] The set torque is displayed via a display element 28 coupled to the gear 27. The display element 28 is arranged on the distal tool side 9.

[0056] When manufacturing the tool 1, a scale for displaying the set torque is placed on the display element

[0057] 28 after its installation in the tool 1 .

[0058] In order to set a torque on the tool 1, the distal and proximal tool sides 8, 9 are pulled apart. The locking means 14 thereby release from the counter-locking means 15. A gap then opens at the dividing line 16. The adjusting element 5 and the housing 4 can now be rotated against one another in order to set a torque. In this case, the gear element 21 is screwed and compresses or relaxes a spring 31 in the housing 4. When the torque desired by a user has been set, which can be read off the display element 28, both tool sides 8, 9, or the adjusting element 5 and the housing 4, are pressed against one another and thus inserted into one another and locked into place.

[0059] A tool 1 with a device 2 for setting a torque limit on an output 3, as well as a method for producing the tool 1 and a method for setting the torque limit are proposed, wherein the device 2 is arranged in a housing 4 and can be adjusted by means of an adjusting element 5 by rotating about an axis of rotation 6, wherein the adjusting element 5 is part of a handle 7 which has a proximal and a distal tool side 8, 9 which can be rotated relative to one another, characterized in that the adjusting element 5 is arranged on a distal tool side 9 of the handle.

[0060] List of reference symbols

[0061] 1 tool

[0062] 2 Device

[0063] 3 Downforce

[0064] 4 housings

[0065] 5 Adjustment element

[0066] 6 axis of rotation

[0067] 7 Handle

[0068] 8 proximal tool side

[0069] 9 distal tool side

[0070] 10 recordings

[0071] 11 blade

[0072] 12 locking mechanism

[0073] 13 Longitudinal axis

[0074] 14 rest stops

[0075] 15 Counter-locking devices

[0076] 16 dividing line

[0077] 17 Grip area

[0078] 18 maximum handle diameter

[0079] 19 minimum handle diameter

[0080] 20 End

[0081] 21 Gear element

[0082] 22 roller bearings

[0083] 23 threads

[0084] 24 threaded sleeve

[0085] 25 external threads

[0086] 26 Handle part

[0087] 27 gearboxes

[0088] 28 Display element

[0089] 29 Eccentric element

[0090] 30 rollers of the cycloidal gear

[0091] 31 spring

Claims

Claims 1. Tool (1) with a device (2) for setting a torque limit on an output (3), wherein the device (2) is arranged in a housing (4) and can be adjusted by means of an adjusting element (5) by rotating about an axis of rotation (6), wherein the adjusting element (5) is part of a handle (7) which has a proximal and a distal tool side (8, 9) which can be rotated relative to one another, characterized in that the adjusting element (5) is arranged on a distal tool side of the handle.

2. Tool (1) according to claim 1, characterized in that the tool has a receptacle (10) for a blade (11), the receptacle (10) being formed on the distal tool side (9) of the handle (7).

3. Tool (1) according to one of the preceding claims, characterized in that the proximal and distal tool sides (8, 9) are movable relative to one another along a longitudinal axis (13) of the tool (1) and / or can be connected to one another in a rotationally secure manner, in particular can be locked.

4. Tool (1) according to one of the preceding claims, characterized in that locking means (14) and / or counter-locking means (15) for connecting, in particular, both tool sides, are formed on the distal and / or proximal tool side (8, 9).

5. Tool (1) according to one of the preceding claims, characterized in that a dividing line (16) which axially separates the distal and proximal tool sides (8, 9) from one another and / or which separates the adjusting element (5) from the housing (4) lies in a gripping area (17), in particular in a range between a maximum handle diameter (18) of the handle (7), in particular of the housing (4), and a minimum handle diameter (19) of the handle (7), in particular of the adjusting element (5).

6. Tool (1) according to one of the preceding claims, characterized in that the housing (4) has the maximum handle diameter (18) and / or that the housing (4) is biconvex.

7. Tool (1) according to one of the preceding claims, characterized in that the adjusting element (5) has the minimum handle diameter (19) and / or is biconcave.

8. Tool (1) according to one of the preceding claims, characterized in that the adjusting element (5) has the minimum handle diameter (19) spaced from a distal end (20) of the handle (7).

9. Tool (1) according to one of the preceding claims, characterized in that a torque transmission from the adjusting element (5) to a gear element (21) takes place, in particular via a roller bearing (22), wherein the roller bearing (22) is axially and / or radially movable about the longitudinal axis (13) of the tool (1).

10. Tool (1) according to one of the preceding claims, characterized in that the adjusting element (5) has a thread (23) or is coupled to a thread (23), with which thread (23) it is mounted in a threaded sleeve (24) in the housing (4).

11. Tool (1) according to one of the preceding claims, characterized in that the housing (4) is connected in a rotationally fixed manner to the output (3) and / or that the Adjusting element (5) is movable relative to the output (3).

12. Tool (1) according to one of the preceding claims, characterized in that the adjusting element (5) drives a gear element (21), in particular wherein the gear element (21) has a thread (23), in particular an external thread (25).

13. Tool (1) with a device (2) for setting a torque limit on an output (3), in particular according to one of the preceding claims, wherein the device (2) is arranged in a housing (4) and is adjustable by means of an adjusting element (5) by rotating about a rotational axis (6), wherein the adjusting element (5) is a part of a handle (7) which has a proximal and a distal tool side (8, 9) which can be rotated relative to one another, characterized in that a rotational movement on a handle part (26) is implemented via a gear (27), wherein the gear (27) is a cycloidal gear, in particular wherein an eccentric element (29) is connected to the housing in a rotationally fixed manner and / or wherein rollers (30) of the cycloidal gear are arranged on the display element (28).

14. Tool (1) according to one of the preceding claims, characterized in that the gear (27) is arranged in the power transmission between the handle part (26) and a display element (28).

15. Tool (1) according to one of the preceding claims, characterized in that the gear element (21) passes through the gear (27).

16. Tool (1) with a device (2) for setting a torque limit on an output (3), in particular according to one of the preceding claims, wherein the device (2) is arranged in a housing (4) and is adjustable by means of an adjusting element (5) by rotating about a rotation axis (6), wherein the adjusting element (5) is part of a handle (7) which has a proximal and a distal tool side (8, 9) which can be rotated relative to one another, wherein a rotary movement on a handle part (26) is implemented via a gear (27), characterized in that a set torque is displayed via a display element (28) coupled to the gear (27).

17. Tool (1) according to one of the preceding claims, characterized in that the display element (28) is arranged on the distal tool side (9).

18. Method for producing a tool (1), in particular according to one of the preceding claims, wherein the tool (1) has a device (2) for limiting the torque and the device (2) has a display element (28) with which a set torque value can be displayed, characterized in that a marking, in particular a scale, for displaying the set torque value is applied, in particular fiberized, to the display element (28) after its installation.

19. A method for adjusting a torque on a tool (1), in particular on a tool (1) according to one of the preceding claims, comprising the following steps: - axially moving a distal and a proximal tool side (8, 9) on a handle (7) relative to each other, in particular pulling the distal and proximal tool sides (8, 9) apart, - Setting a torque value by rotating the distal and proximal tool sides (8, 9) relative to each other, - axial movement of the distal and proximal tool sides (8, 9) on a handle, in particular inserting the two tool sides (8, 9) into one another.

Images