Torque screwdriver

Abstract

The present invention relates to a torque tool, in particular a torque driver, which has a handle 2 and an adjustment body 7 for adjusting a rotational torque, which is rotatable about a longitudinal axis L of the handle 2, the adjustment body 7 being unlockable and lockable to the handle 2 by means of a locking body 9, a switching ring 18 being assigned to the locking body 9, the switching ring 18 being linearly movable relative to the locking body 9, the switching ring 18 being provided with at least one switching pin 19, which is supported in a control track 20 in the adjusting body 7, and the switching ring 18 and the locking body 9 being connected to each other. Between them are arranged a locking disk 21 and a spring element 22 which loads the locking disk 21, the locking disk 21 having a locking part body 30 which cooperates with a locking part receiving part 31 in the handle 2, whereby by rotation of the locking body 9, the switching pin 19 moves along the control track 20 and an axial movement of the switching ring 18 and the locking disk 21 relative to the handle 2 can occur, whereby the locking part body 30 can be moved out of the locking part receiving part 31 for unlocking the adjusting body 7 and can be brought into engagement with the locking part receiving part 31 for locking the adjusting body 7.

Description

[Technical field]

[0001] The invention relates to a torque tool, in particular a torque driver, according to the features in the preamble of claim 1 . [Background technology]

[0002] Torque tools (torque driver) are manually operated tools by means of which a rotational torque can be applied to workpieces, usually screws or nuts. A predefined tightening torque can be applied by means of adjustable torque tools to ensure the required clamping force or assembly preload force between the structural members to be joined.

[0003] In torque drivers the release mechanism is usually housed in the handle, in other torque tools the release mechanism can likewise be provided in the lever tube of the torque tool.

[0004] An adjustable torque driver is disclosed in US Pat. No. 5,399,633.

[0005] An adjustment device is also provided in or on the handle of the torque tool with an indication of the torque to be adjusted, whereby an adjustment mechanism in the handle, in particular an adjustment body connected to a threaded spindle, is rotated relative to a fixed part of the handle, whereby the desired torque is adjusted by compression of a compression spring. In order to protect the respectively adjusted torque against unintentional adjustment when using the torque tool, the adjustment device is fixed by means of a locking element which is operated via a locking body, and for adjustment of the torque the locking element is unlocked.

[0006] Various adjusting and locking units are known in the prior art, which fulfill their tasks satisfactorily according to their respective embodiments and have proven to be useful in practice. Nevertheless, these operability features are often not immediately apparent to the user.Similarly, operability and ease of use are also considered worthy of improvement. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] International Publication No. 2013 / 143258 A1 Summary of the Invention [Problem to be solved by the invention]

[0008] The object of the present invention is to improve a torque tool in terms of its use and to improve the locking or unlocking function and user-friendly features. [Means for solving the problem]

[0009] The solution to this problem lies according to the invention in a torque tool, in particular a torque driver according to claim 1.

[0010] Torque tool according to the invention (torque driver) Advantageous embodiments and further configurations are the subject of the dependent claims. Effect of the Invention

[0011] The torque tool, here in particular the torque driver, has a handle and an adjustment body for adjusting the rotational torque, which is rotatable about the longitudinal axis of the handle and which can be unlocked and locked to the handle by means of a locking device with a locking body. This locking device brings about the desired fixing or blocking of the adjusting body. In a locked locking device, manipulation of the adjusting body for adjusting the rotational torque is not possible. In an unlocked locking device, the adjusting body can be manipulated, in particular the adjusting mechanism or the adjusting device can be used for adjusting a predefined rotational torque. This is done in the torque tool according to the invention by a pivoting or rotating movement of the adjusting body about the longitudinal axis of the handle.

[0012] According to the present invention, a switching ring is attached to the lock body. The switching ring is linearly movable relative to the locking body, at least one switching pin is provided on the switching ring, which is supported in a control track in the adjusting body, and a locking disk and a spring element that loads the locking disk are arranged between the switching ring and the locking body. The locking disk has locking body parts which preferably project radially and laterally relative to the locking disk and cooperate with a locking receptacle in the handle. By rotating the locking body, this or each switching pin moves along the control track. The geometric configuration of the control track causes an axial movement of the switching ring and the locking disk relative to the handle, whereby the locking body is moved out of the locking body receiving portion for unlocking the adjusting body, or can be moved out of the locking body receiving portion and is or can be brought into engagement with the locking body receiving portion for locking the adjusting body.

[0013] The embodiments according to the invention can be applied to torque wrenches as well as to torque drivers. It is particularly advantageous that the torque tool constructed according to the invention and the locking member of the adjusted rotation torque allow intuitive operation by the user.

[0014] To adjust the torque tool to a desired rotational torque value, the torque tool is held in the handle and adjusted to the desired rotational torque value by rotation of the adjustment body. In the locked state, the handle and the adjustment body are connected to each other to prevent radial movement, i.e. rotation of the adjustment body. The current locked or unlocked state can be displayed in at least one viewing window located around the periphery of the adjustment body, the number of which can be increased approximately expediently, taking into account the given constructional requirements.

[0015] The adjustment of the switching position and thus of the respective locked or unlocked state is effected by rotating the locking body, irrespective of whether the rotation is effected clockwise or counterclockwise. Locking can therefore be performed reliably by the operator in both rotational directions of the lock body, which is convenient for the operator, regardless of whether he is right-handed or left-handed. Locking and unlocking of the torque tool can be achieved very simply and reliably.

[0016] When the locking body is rotated, the switching pin radially traces a control track in the adjustment body and thereby generates an axial movement. The switching pin is arranged around a switching ring. The number and pitch of the switching pins as well as the periodic or alternating repetition of the control tracks are designed in such a way that the switching positions are alternated by pivoting the structural members relative to one another, so that the unlocked and locked switching positions alternate in an alternating fashion. It is then possible for the control trajectory and the geometry of this control trajectory to be configured in such a way that the alternation of the switching positions occurs over the circumference of one revolution via rotation angle intervals of equal size, which can then take place, for example, by rotation angles of 30°, 45°, 60° or also 90°, respectively.

[0017] To change the switching position and thus the switching state, the direction of rotation can take place to the right or to the left without abutment. A control track arranged in the adjustment body and extending circumferentially through 360° allows abutment-free change of the switching state, because a switching pin arranged in the switching ring can trace the control track. The direction of rotation in this process is entirely arbitrary and occurs without abutment. The provided protuberances and recesses are useful for finding the corresponding switching points. The axial position of the locking disk, which is changed when tracing the control path, serves for the corresponding locking of the adjusting body.

[0018] Advantageously, the locking body engages in a sleeve portion of the adjustment body through a longitudinal slit. It is possible for the locking bodies to be formed by webs or projections which engage into the sleeve part of the adjusting body through longitudinal slits and project radially relative to the circumference of this sleeve part, in which they are guided linearly, i.e. straight, and in the direction of the longitudinal axis of the handle.

[0019] A further advantageous aspect is that the locking body and the switching ring are linearly movable relative to one another by means of guide elements. Advantageously, the guide elements on the locking body are formed in the form of guide protrusions in the sockets of this locking body and the guide elements on the switching ring are formed in the form of guide recesses on the inner circumference of the switching ring.

[0020] An embodiment that is particularly advantageous for practice provides for the control track to be formed circumferentially at the inner rim of the adjusting body and to be provided with alternating elevations and depressions, it being possible for the control track to have inclined portions, inclined portions or also curved portions. It is important that the control track and the switching pin which is moved along this control track generate a relative axial movement when the adjusting body is rotated, by which axial movement this or these locking body parts can be moved out of or into the locking housing.

[0021] By effect, each of the protuberances of the control track forms a switching position in which the adjustment body is unlocked, while each of the recesses of the control track forms a switching position in which the adjustment body is locked. Alternatively, at each switching position, a locking portion or a similarly formed fixing contour can be provided, in which the switching pin can be positioned and is limited and braked in a frictionally engaged state.

[0022] At least one viewing window is provided around the periphery of the ring portion of the adjuster for indicating the locking state of the adjuster.

[0023] Advantageously, a number of viewing windows are provided, which are arranged offset relative to one another around the periphery.

[0024] In an advantageous embodiment, the ring portion grips a cosmetic ring, which is non-rotatably attached to the locking body and which carries symbols for visualizing the locked state of the adjusting body, which symbols are respectively visible through at least one of the viewing windows. Such a symbol can be a pictogram, for example a lock in the open state or a lock in the closed state, which pictograms indicate corresponding information regarding the lock state.

[0025] An advantageous embodiment of the torque tool according to the invention provides that the spring element is positioned in a carrier structure, which is advantageous in terms of construction and assembly technology.

[0026] The retainer structure has a bottom portion and locking elements which engage into locking receptacles in the adjuster.

[0027] The locking body and the switching ring are connected only radially by means of guide elements, in particular via a recess-projection guide, so that the switching ring can be displaced axially when tracing the control path. The locking body and the switching ring can be displaced linearly relative to one another by means of guide elements. On the other hand, the spring-loaded locking disk is supported tangentially to the switching pin. The respective axial movement of the switching ring is transmitted synchronously to the locking disk. Around the periphery of the locking disc, advantageously two, but possibly also a number of, locking body bodies are provided, which engage through the longitudinal slits into the sleeve part of the adjusting body and protrude from the respective longitudinal slits. In the locked or coupled state, the locking body is inserted into a locking receptacle provided in the handle via a spring force acting on the locking disk. The locking receptacle is preferably configured as a short groove aligned with the longitudinal axis of the handle. When the locking body is inserted into the locking receptacle, a non-rotatable connection between the handle and the adjusting body is ensured. If the locking part receiving part and the locking part body are not overlapped with each other, they can be first moved automatically or by a spring force to be assembled when they are overlapped or coincident with each other, and then the locking part body is automatically locked into the locking part receiving part by the axial force of the spring element. When unlocking, the switching pin on the control track is moved against the spring force of the spring element. Due to the axial movement transmitted in the process, the locking body is moved out of the locking housing in the handle. The lock is released and the adjusting body is unlocked. Via the adjusting body, the rotational torque can be adjusted. After adjustment of the desired rotation torque, the lock body is moved to a switching position for locking the mechanism, the lock body is engaged into the lock receiving part, and the torque tool or the torque adjustment device is protected against unintentional adjustment of the torque tool.

[0028] The locking device is inherently or automatically locking: the locking body can be inherently locked into the locking receiving part, since the locking disk is permanently loaded with an axial force by means of a spring element.

[0029] The invention will now be explained in more detail with reference to the drawings. [Brief description of the drawings]

[0030] [Figure 1] FIG. 2 shows a torque tool according to the invention in the form of a torque driver, with the locking member released. [Diagram 2] 2 is an illustrative longitudinal cross-sectional view of FIG. 1 taken along line AA. [Diagram 3] FIG. 2 is a view of the torque driver corresponding to FIG. 1 in one view, with the locking member closed. [Figure 4] 4 is an illustrative cross-sectional view of FIG. 3 taken along line BB. [Diagram 5] FIG. 13 is a perspective exploded view of the structural members of the locking member and the adjustment body. [Figure 6] FIG. 13 is a diagram of the structural members of the locking member and the adjustment body in a side view. [Figure 7] 7 is an illustrative cross-sectional view of FIG. 6 taken along line CC. [Figure 8] 7 is an illustrative cross-sectional view of FIG. 6 taken along line EE. [Figure 9] FIG. 7 is an illustrative cross-sectional view of FIG. 6 taken along line DD. [Figure 10] FIG. 2 is a perspective view of a handle of a torque driver shown from above at an angle. [Figure 11] FIG. 13 is a perspective view of a structural member of yet another embodiment of a torque tool. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0031] 1 to 10 and 11, a torque tool 1 according to the invention in the form of a torque driver will be described.

[0032] The torque tool 1 has a handle 2 as well as a display part 3 for adjusting the rotational torque and a follower part 4 . An adjustment device 5 for the adjustment of a predefined rotation torque or a defined tightening torque is integrated in the handle 2. The adjustment device 5 comprises an adjustment mechanism, not described in more detail here, by means of which the desired rotation torque is adjusted by compression of a compression spring 6.

[0033] The adjustment device 5 and its adjustment mechanism cooperate with an adjustment body 7 on the handle 2. The adjustment body 7 is rotatable relative to the handle 2 about the longitudinal axis L of the handle 2. By pivoting the adjustment body 7 relative to a fixed part of the handle 2, the rotational torque is adjusted. In order to protect the respectively adjusted torque against unintended adjustment, the adjusting body 7 is fixed by means of a locking element 8 which is actuated via a locking body 9 .

[0034] The follower 4 of the torque tool 1 is arranged at the end side in the handle 2. The follower 4 is designed for the accommodation of exchangeable tool inserts. For the exchangeable accommodation of different tool inserts, the follower 4 is provided with a holding system 10 defined for this purpose.

[0035] The display 3 for the adjusted torque has a number roller counting mechanism 11 with a number roller 12 arranged one behind the other, which can be read by means of a through opening 13 in the handle 2.

[0036] The adjusting body 7 is unlockable and lockable to the handle 2 by means of a locking body 9. To bring the torque tool 1 to an adjustment value, the locking member 8 of the adjusting body 7 is disengaged. This is caused by rotation of the locking body 9 at the rear grip end 14.

[0037] The operation of the lock body 9 is carried out manually. For this purpose, at the rear grip end 14, the lock body 9 is provided with a grip piece 15 and a grip recess 16. The lock body 9 can be rotated in both directions about its longitudinal axis L. By pivoting the locking body 9, an alternation of the switching positions of the adjusting body 7 or of the locking states from the unlocked state to the locked state and from the locked state to the unlocked state is caused.

[0038] The actual adjusted locked or unlocked state, respectively, is visible in a sight glass 17 for indicating the locked state. FIG. 1 shows the torque tool 1 or the adjusting body 7 of this torque tool in the unlocked state. A symbol in the form of an open padlock can be seen in the viewing window 17. The locked or unlocked state of the adjusting body 7 is "unlocked" in the switching position. In this locked state, the rotational torque value can be reduced or increased by rotating the adjusting body 7. If the target value has been reached, the adjusting body 7 is locked again, so that the adjusting value cannot be adjusted unintentionally. 3 shows the torque tool 1 in the locked state of the adjustment body 7. The user can see this locked state in the viewing window 17.

[0039] A switching ring 18 is attached to the locking body 9, which can be moved linearly relative to the locking body 9. The switching ring 18 is provided with switching pins 19, which are supported in a control track 20 in the adjustment body 7. Between the switching ring 18 and the locking body 9 a locking disk 21 and a spring element 22 which loads said locking disk 21 are arranged.

[0040] The spring elements 22 are compression springs. The spring elements 22 are positioned in a holder structural member 23. The holder structural member 23 has a bottom part 24 and locking elements 25. The locking elements 25 are provided on spring arms 26 which protrude from the bottom part 24 in the direction towards the adjustment body 7. The locking elements 25 have locking parts. The locking elements 25 engage into locking part receptacles 27 in the adjustment body 7. The retainer structure 23 grips a socket 29 of the lock body 9 with a central guide portion 28 .

[0041] The locking disks 21 have locking body parts 30 which cooperate with locking receptacles 31 in the handle 2. The locking body parts 30 each pass through a longitudinal slit 32 and engage into a sleeve part 33 of the adjustment body 7.

[0042] The locking body 9 and the switching ring 18 are linearly movable relative to one another by means of guide elements 34, 35. The guide element 34 on the locking body 9 is formed as a guide protrusion in the socket 29 of this locking body 9. The guide element 35 on the switching ring 18 is formed in the form of a guide recess in the inner circumference 36 of the switching ring 18.

[0043] Rotation of the lock body 9 causes the switching pin 19 to move circumferentially along the control track 20 and also causes an axial movement of the switching ring 18 and the locking disk 21 relative to the handle 2 in the longitudinal axis L of the handle. This axial movement moves the locking portion main body 30 outward from the locking portion accommodating portion 31 to unlock the adjustment body 7, and on the other hand, brings the locking portion main body 30 into engagement with the locking portion accommodating portion 31 to lock the adjustment body 7.

[0044] The control track 20 is formed at the inner rim 37 of the adjustment body 7 and extends around the circumference, There are thereby provided alternating elevations 38 and depressions 39. For this purpose, reference should be made in particular to the illustrations in FIGS. Each bump 38 defines a switching position in which the adjustment body 7 is unlocked, and each recess 39 defines a switching position in which the adjustment body 7 is locked.

[0045] The number and pitch of the switching pins 19 correspond, on the one hand, to the number and pitch of the viewing windows 17 provided in the adjusting body 7; On the other hand, it corresponds to the periodic repetition of the control trajectory 20 and to the switching positions which are formed in this control trajectory 20 and which are repeated alternately.

[0046] The locking body 9 and the switching ring 18 are radially fixed via the guide elements 34, 35, i.e. via the guide recesses and the guide protrusions, but are also linearly movable relative to one another in the axial direction, so that the switching ring 18 is also movable in the axial direction when tracing the control track 20. On the other hand, the locking disk 21 is supported tangentially to the changeover pin 19 in a spring-loaded manner by means of a spring element 22. The respective axial movement of the changeover ring 18 is transmitted synchronously to the locking disk 21.

[0047] On the periphery of the locking disk 21, two locking bodies 30 are provided. The locking bodies 30 are formed as web sections. They engage through longitudinal slits 32 into a sleeve part 33 of the adjustment body 7 and project radially relative to the periphery of the sleeve part 33. In the locked state, the locking body 30 engages into a locking receptacle 31 located in the handle 2 via the spring force of the spring element 22 acting against the locking disk 21. As can be seen particularly in the illustration of Fig. 10, the locking receptacle 31 is formed by a groove. A number of such groove-shaped locking receptacles 31 are provided in an inner rim portion 40 on the inner periphery of the handle 2. When the locking part body and the locking part receiving part are in a jointly overlapping state, the locking part body 30 is loaded by the spring force of the spring element 22 and assembled into the locking part receiving part 31. When the locking part body 30 is assembled into the locking part receiving part 31, the adjustment body 7 is connected to the handle 2 and is non-rotatably connected thereto. Adjustment of the adjustment body 7 is not possible in the locked state of the locking member 8.

[0048] For unlocking, the locking body 9 is actuated and the switching position is alternated from the locked state of the adjusting body 7 to the unlocked state of this adjusting body 7. This is done by a rotational movement of the locking body 9 about the longitudinal axis L of the handle 2. By this rotational movement the switching pin 19 on the control track 20 is moved against the spring force of the spring element 22. The transmitted axial movement causes the locking portion main body 30 to move outward from the locking portion accommodating portion 31 in the handle 2, so that the adjustment body 7 can be rotated relative to the handle 2 and a rotational torque adjustment can be performed.

[0049] The control track 20, which extends circumferentially through 360° in the adjusting body 7, allows abutment-free change of the switching or locking state of the adjusting body 7, because the switching pin 19 arranged in the switching ring 18 can trace the control track 20. The direction of rotation in this process is entirely arbitrary and takes place without abutment. The ridges 38 and recesses 39 define corresponding switching points or locked / unlocked states. The axial position of the locking disk 21, which is changed when tracing the control track 20, serves for the corresponding locking or unlocking of the adjustment body 7.

[0050] The locking body 30 locks inherently or automatically into the locking receptacle 31. This occurs because the locking disk 21 is permanently loaded with an axial force by the spring element 22.

[0051] The viewing windows 17 for the display 3 of the locked state of the adjusting body 7 are provided around the periphery of the ring part 41 of this adjusting body 7. In this case, the viewing windows 17, which are arranged offset relative to one another around the periphery, are formed as through-openings in the ring part 41 of the adjusting body 7.

[0052] It is possible for the ring part 41 to grip a cosmetic ring, which is non-rotatably attached to the locking body 9. This cosmetic ring has symbols for visualizing the unlocked and locked states of the adjusting body 7, which are respectively visible through a viewing window.

[0053] One embodiment of the torque tool 1 with a cosmetic ring 42 is shown in the illustration of Fig. 11. Symbols 43 for visualizing the unlocked and locked states of the adjustment body 7 are distributed around the circumference of the cosmetic ring 42. The cosmetic ring 42 is non-rotatably attached to the lock body 9 and is mounted on a socket part 44 of this lock body 9. The cosmetic ring 42 is surrounded by the ring part 41 of the adjustment body 7. Through the viewing window 17 a symbol 43 for the locked or unlocked state of the adjustment body 7 is visible.

[0054] Otherwise, this embodiment corresponds to the preceding description, and therefore reference is made to said description and to the corresponding description bearing the reference numbers. In addition, the present application relates to the invention described in the claims, but may also include the following as other aspects. 1. A torque tool, in particular a torque driver, comprising: The device has a handle (2) and an adjustment body (7) for adjusting a rotation torque, the adjustment body (7) being rotatable about a longitudinal axis (L) of the handle (2), In the torque tool, the adjustment body (7) is capable of being unlocked and locked to the handle (2) by a lock body (9), A switching ring (18) is assigned to the lock body (9), The switching ring (18) is linearly movable relative to the lock body (9), and The switching ring (18) is provided with at least one switching pin (19), which is supported on a control track (20) in the adjusting body (7); and A lock disk (21) and a spring element (22) that applies a load to the lock disk (21) are disposed between the switching ring (18) and the lock body (9), The lock disk (21) has a lock body (30), which cooperates with a lock housing (31) in the handle (2); Rotation of the lock body (9) causes the switching pin (19) to move along the control track (20) and causes axial movement of the switching ring (18) and the lock disk (21) relative to the handle (2); This allows the locking body (30) to move out of the locking body receiving portion (31) in order to unlock the adjusting body (7), and to be brought into an engaged state with the locking body receiving portion (31) in order to lock the adjusting body (7). A torque tool characterized by: 2. The torque tool described in claim 1, characterized in that the locking portion body (30) passes through a longitudinal slit (32) and engages within the sleeve portion (33) of the adjustment body (7). 3. The lock body (9) and the switching ring (18) are linearly movable relative to each other by means of guide elements (34, 35); Advantageously, the guide element (34) on the lock body (9) is formed in the form of a guide projection on the socket (29) of this lock body (9), and the guide elements (35) in the switching ring (18) are formed in the form of guide recesses in the inner circumference (36) of the switching ring (18), 3. The torque tool according to claim 1 or 2, 4. The control track (20) is formed on the inner rim (37) of the adjustment body (7) and extends circumferentially; 4. A torque tool as claimed in any one of claims 1 to 3, characterized in that it is provided with alternating raised portions (38) and recessed portions (39). 5. Each of the protuberances (38) defines a switching position in which the adjustment body (7) is unlocked, and 5. The torque tool according to claim 4, characterized in that each of the recesses (39) defines a switching position in which the adjusting body (7) is locked. 6. A torque tool as described in any one of 1 to 5 above, characterized in that a viewing window (17) for indicating the locked state of the adjusting body (7) is provided around the ring portion (41) of the adjusting body (7). 7. A torque tool as described in claim 6, characterized in that it is provided with a plurality of sight windows (17) arranged in a mutually offset manner around the periphery. 8. The ring portion (41) holds a cosmetic ring, This cosmetic ring is non-rotatably assigned to said lock body (9), and the cosmetic ring has symbols for visualizing the unlocked and locked states of the adjusting body (7), said symbols being visible through at least one of the sight windows (17); 8. The torque tool according to claim 6 or 7, 9. A torque tool according to any one of claims 1 to 8, characterized in that the spring element (22) is positioned in a retainer structural member (23). 10. The torque tool described in claim 9, characterized in that the retaining body structural member (23) has a bottom portion (24) and a locking element (25), which engages into a locking portion receiving portion (27) in the adjustment body (7). 11. A torque tool, in particular a torque driver, comprising: The device has a handle (2) and an adjustment body (7) for adjusting a rotation torque, the adjustment body (7) being rotatable about a longitudinal axis (L) of the handle (2), In the torque tool, the adjustment body (7) is capable of being unlocked and locked to the handle (2) by a lock body (9), A switching ring (18) is assigned to the lock body (9), The switching ring (18) is provided with at least one switching pin (19), which is supported on a control track (20) in the adjustment body (7), the control track (20) is formed extending circumferentially within the adjustment body (7) up to 360°; and The change of the switching state of the adjusting body (7) from unlocked to locked and from locked to unlocked is performed by pivoting the lock body (9) about the longitudinal axis (L), The switching pin (19) and the control track (20) 1. A torque tool, characterized in that it is configured and cooperates in such a way that the change of switching state is effected without abutment and independently of the direction of rotation of the locking body (9) and can therefore be effected by a right-handed as well as a left-handed rotation. [Explanation of symbols]

[0055] 1 torque tool (torque driver) 2 handle 3 Display section 4 Driven part 5 Adjustment device 6 Compression Spring 7 Regulator 8 Locking member 9 Lock body 10 Retention System 11 Number roller counting mechanism 12 Number Roller 13 through opening in torque tool 2 14 Grip end 15 Grip piece 1 16 Grip recess 17 Peephole 18 Switching Ring 19 Switching pin 20 Controlled Trajectory 21 Rock Disc 22 Spring elements 23 Support structure member 24 Bottom part 25 Locking element 26 Spring Arm 27 Locking part housing 28 Information section 29 Sockets 30 Lock body 31 Lock unit housing 32 Longitudinal slit 33 Sleeve part 34 Guiding element of lock body 9 35 Guiding element of the switching ring 18 36 Inner Circumference 37 Rims 38 Ridge 39 Recess 40 Rim part 41 Ring part 42 Cosmetic Ring 43 Symbols 44 Socket part L Longitudinal axis of handle 2

Claims

1. A torque driver, comprising: The device has a handle (2) and an adjustment body (7) rotatable about a longitudinal axis (L) of the handle (2) for adjusting a desired rotation torque, The rotational torque is provided by an adjustment device (5), The rotational torque is adjusted by pivoting the adjusting body (7) relative to the fixed part of the handle (2), In the torque driver, the adjustment body (7) is capable of being unlocked and locked to the handle (2) by a lock body (9), A switching ring (18) is attached to the lock body (9), The switching ring (18) is linearly movable relative to the lock body (9), and The switching ring (18) is provided with at least one switching pin (19), which is supported on a control track (20) in the adjusting body (7), and A locking disk (21) and a spring element (22) for applying a load to the locking disk (21) are disposed between the switching ring (18) and the locking body (9), The locking disk (21) has a locking body (30) which cooperates with a locking receiving portion (31) in the handle (2); Rotation of the lock body (9) causes the changeover pin (19) to move along the control track (20) and the axial movement of the changeover ring (18) and the locking disk (21) relative to the handle (2); This allows the locking body (30) to be moved outward from the locking body accommodating portion (31) in order to unlock the adjusting body (7), and to be brought into an engaged state with the locking body accommodating portion (31) in order to lock the adjusting body (7); the locking body (9) and the switching ring (18) are linearly movable relative to each other by means of guide elements (34, 35); Advantageously, the guide element (34) on the locking body (9) is formed in the form of a guide projection on the socket (29) of this locking body (9), and the guide elements (35) on the switching ring (18) are formed in the form of guide recesses on the inner periphery (36) of the switching ring (18), the control track (20) is formed circumferentially at an inner rim (37) of the adjustment body (7); alternating raised portions (38) and recessed portions (39); and Each said ridge (38) defines a switching position in which the adjusting body (7) is unlocked, and each said recess (39) defines a switching position in which the adjusting body (7) is locked; A torque driver characterized by:

2. 2. The torque driver according to claim 1, characterized in that the locking body (30) is engaged in a sleeve part (33) of the adjusting body (7) through a longitudinal slit (32).

3. 3. The torque driver according to claim 1 or 2, characterized in that a viewing window (17) is provided around the ring portion (41) of the adjusting body (7) for indicating the locked state of the adjusting body (7).

4. 4. A torque driver as claimed in claim 3, characterized in that it is provided with a number of sight windows (17) arranged offset relative to one another around the periphery.

5. The ring portion (41) holds a cosmetic ring, The decorative ring is attached to the lock body (9) in a non-rotatable manner, and the cosmetic ring has symbols for visualizing the unlocked and locked states of the adjustment body (7), said symbols being visible through at least one of the sight windows (17); 5. The torque driver according to claim 3 or 4.

6. 6. The torque driver according to claim 1, wherein the spring element (22) is positioned in a carrier structure (23).

7. 7. The torque driver according to claim 6, characterized in that the retaining body structure (23) has a bottom part (24) and locking elements (25), which engage into locking part receiving portions (27) in the adjusting body (7).

8. A torque driver according to any one of claims 1 to 7, comprising: The device has a handle (2) and an adjustment body (7) for adjusting the rotation torque, the adjustment body (7) being rotatable about a longitudinal axis (L) of the handle (2), In the torque driver, the adjustment body (7) is capable of being unlocked and locked to the handle (2) by a lock body (9), A switching ring (18) is attached to the lock body (9), The switching ring (18) is provided with at least one switching pin (19), which is supported on a control track (20) in the adjusting body (7), the control track (20) is formed extending circumferentially within the adjustment body (7) by up to 360°; and the change of the switching state of the adjusting body (7) from unlocked to locked and from locked to unlocked is effected by pivoting the lock body (9) about the longitudinal axis (L); The switching pin (19) and the control track (20) 1. A torque driver, characterized in that it is configured and cooperates in such a way that the change of switching state is effected without abutment and independently of the direction of rotation of the locking body (9) and can therefore be effected by a right-handed as well as a left-handed rotation.

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