Tool with torque limitation

Abstract

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 it 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.

Description

[0001] The invention relates to a tool with a device for adjusting 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 rotation 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.

[0002] 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 rotation 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.

[0003] 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.

[0004] The invention further relates to a method for adjusting a torque on a tool.

[0005] The object of the invention is to improve tools with torque limitation. A further object of the invention is to improve methods for producing tools with torque limitation and methods for adjusting a torque on a tool with torque limitation.

[0006] 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 above, 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 the other 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 understood to be 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.

[0007] In many cases, the axis of rotation will coincide with or be parallel to a longitudinal axis of the tool.

[0008] 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 transmitted to the blade.

[0009] 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 into and 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 relative to one another. In particular, it can be provided that the two tool sides can be locked into place.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.

[0010] 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 establish 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.

[0011] 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 region. This can, for example, make it possible to advantageously rotate both tool sides along 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 region. This can, for example, make it possible to design the adjusting element and housing 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 to grip the handle particularly firmly and securely at the maximum grip diameter in order to adjust the torque. In particular, the dividing line can be arranged between a maximum grip diameter of the housing and a minimum grip diameter of the adjustment element. This can, for example, make it possible to adjust the torque setting on the adjustment element with minimal force required by the user.

[0012] In an advantageous embodiment, the housing can be provided with the maximum grip diameter. This can, for example, ensure that the housing is easy to grasp and sits securely in the hand. This can also, for example, allow the housing to be gripped with one hand while the adjustment element is rotated with the other. Alternatively or additionally, the housing can be provided with a biconvex design. This can, for example, ensure that the housing sits particularly well and securely in the user's hand.

[0013] In an advantageous embodiment, the adjustment element can be provided with a minimal grip diameter. This can, for example, ensure that the adjustment element fits comfortably in the hand and can be gripped with one hand. Alternatively or additionally, the adjustment element can be provided with a biconvex design. This can, for example, ensure that the adjustment element fits comfortably and securely in the hand.

[0014] In an advantageous embodiment, the adjustment element can have the minimum handle diameter spaced from a distal end of the handle. This can, for example, ensure that the adjustment element can be securely gripped to adjust the torque.

[0015] 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 torque adjustment. 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.

[0016] In an advantageous embodiment, the adjustment 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 translate a rotational movement of the adjustment element into a rotation of the thread, whereby the thread can exert pressure on a spring that effects the torque adjustment.

[0017] In an advantageous embodiment, the housing can be connected to the output drive 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 drive or the blade. Alternatively or additionally, the adjustment element can be movable relative to the output drive. This can, for example, make it possible for the adjustment element to be rotatable and to effect the torque adjustment of the tool.

[0018] 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 a rotation of the adjusting element causes 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.

[0019] 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 rotary movement on a handle part 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.

[0020] In an advantageous embodiment, the gear mechanism 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 gear mechanism and the set torque can be displayed on the display element.

[0021] In an advantageous embodiment, it can be provided that the gear is a cycloidal gear. This can, for example, enable power transmission without gears, whereby low wear is achieved. In particular, it can be provided that an eccentric element is connected to the housing in a rotationally fixed manner. This can, for example, enable rotation of the housing to adjust the torque. Alternatively or additionally, it can be provided that rollers of the cycloidal gear are arranged on the indicator element. This can, for example, make the indicator element part of the gear and thus require fewer parts, which has a positive effect on a compact and cost-effective design of the tool.

[0022] In an advantageous embodiment, the transmission element can be provided through the gear mechanism. This can, for example, allow a rotation of the adjustment element to be transmitted 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.

[0023] 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 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.

[0024] In an advantageous embodiment, the indicator element can be arranged on the distal side of the tool. This makes it possible, for example, to arrange the indicator element on the gear box at the adjustment element where the torque adjustment takes place, thus eliminating the need for additional parts.

[0025] Alternatively or additionally, to achieve the stated object, the invention proposes the features of the independent claim directed to a method for producing a tool. In particular, it is thus proposed that a marking for indicating 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 suitable 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.

[0026] 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 to apply the marking 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. The method comprises the following steps: - an axial movement of a distal and a proximal tool side relative to each other on a handle. In particular, the movement can be a pulling apart of the distal and proximal tool sides. This can release a locking mechanism between the two tool sides. - setting a torque value by rotating the distal and proximal tool sides relative to each other - 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.

[0028] 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.

[0029] They show: Fig. 1 a tool in sectional view in an open position, Fig. 2 the tool in sectional view in a locking position, Fig. 3 the tool in perspective view in a locking position, Fig. 4 the tool in perspective view in an open position, Fig. 5 the tool in perspective view without a proximal handle, Fig. 6 the tool in perspective view in partially cutaway representation and Fig. 7 a detailed view of the tool.

[0030] Fig. 1 shows the tool 1, designated overall 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 made with an adjusting element 5 by rotating it 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. During operation of the tool 1, the proximal tool side 8 is closer to a user than the distal tool side 9. The adjusting element 5 is arranged on the distal tool side 9 of the handle 7.

[0031] 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 secured in the receptacle 10 using a locking mechanism 12.

[0032] 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.

[0033] 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.

[0034] Fig. 1 and Fig. 3 show the tool 1 in a locking position, wherein the proximal and distal tool sides 8, 9, or the housing 4 and the adjusting element 5 are locked together.

[0035] Fig. 2 and Fig.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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] The adjusting element 5 has a thread 23 with which it is mounted in a threaded sleeve 24 in the housing 4.

[0040] The housing 4 is connected to the output 3 in a rotationally fixed manner, allowing rotational movement to 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, allowing the torque on the tool 1 to be adjusted.

[0041] The gear element 21 is driven by the adjusting element 5, wherein the gear element 21 has an external thread 25.

[0042] The rotary movement of a handle part 26 is implemented via a gear 27. In the power transmission, the gear 27 is arranged between the handle part 26 and a display element 28. In the exemplary embodiment, the gear 27 is a cycloidal gear, with an eccentric element 29 connected in a rotationally fixed manner to the housing 4 and rollers 30 of the cycloidal gear arranged on the display element 28. The gear element 21 extends through the gear 27. The gear element 21 thus extends from the adjustment element 5 across the dividing line 16 into the housing 4 of the tool 1.

[0043] 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.

[0044] During manufacture of the tool 1, a scale for displaying the set torque is lasered on the display element 28 after its installation in the tool 1.

[0045] To set a torque on the tool 1, the distal and proximal tool sides 8, 9 are pulled apart. This releases the locking means 14 from the counter-locking means 15. A gap then opens at the dividing line 16. The adjustment element 5 and the housing 4 can now be rotated against each other to set a torque. 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 adjustment element 5 and the housing 4, are pressed against each other and thus inserted into each other and locked.

[0046] 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. List of reference symbols 1 tool 2 Device 3 downforce 4 housings 5 Adjustment element 6 axis of rotation 7 Handle 8 proximal tool side 9 distal tool side 10 recordings 11 blade 12 locking mechanism 13 Longitudinal axis 14 resting means 15 counter-locking devices 16 dividing line 17 Grip area 18 maximum handle diameter 19 minimum handle diameter 20 End 21 Gear element 22 rolling bearings 23 threads 24 threaded sleeve 25 external threads 26 Handle part 27 gearboxes 28 Display element 29 Eccentric element 30 rollers of the cycloidal gear 31 spring

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 is adjustable by means of an adjusting element (5) by rotating about a rotational 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 are rotatable relative to one another, characterized by that the adjusting element (5) is arranged on a distal tool side of the handle. [2] Tool (1) according to claim 1, characterized by that the tool has a receptacle (10) for a blade (11), wherein the receptacle (10) is formed on the distal tool side (9) of the handle (7). [3] Tool (1) according to one of the preceding claims, characterized bythat 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 by 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 by 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 grip region (17), in particular in a region between a maximum grip diameter (18) of the handle (7), in particular of the housing (4), and a minimum grip diameter (19) of the handle (7), in particular of the adjusting element (5). [6] Tool (1) according to one of the preceding claims, characterized by 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 by 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 by 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 by 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 by 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 by that the housing (4) is connected to the output (3) in a rotationally fixed manner 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 by 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 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 are rotatable relative to one another, characterized by that a rotary movement on a handle part (26) is implemented via a gear (27) [14] Tool (1) according to one of the preceding claims, characterized by 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 bythat 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). [16] Tool (1) according to one of the preceding claims, characterized by that the gear element (21) passes through the gear (27). [17] 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 rotation 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 are rotatable relative to one another, wherein a rotational movement on a handle part (26) is implemented via a gear (27), characterized bythat a set torque is displayed via a display element (28) coupled to the gear (27). [18] Tool (1) according to one of the preceding claims, characterized by that the display element (28) is arranged on the distal tool side (9). [19] 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 by that a marking, in particular a scale, for displaying the set torque value is applied, in particular lasered, to the display element (28) after its installation. [20] Method for setting 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.

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