Torque transmission device

Abstract

The invention relates to a torque transmission device. The torque transmission device comprises a first rotating part and a second rotating part, and the first rotating part and the second rotating part can relatively rotate around a rotating axis and are relatively static in the axial direction. The torque transmission device further comprises a middle transmission cylinder and two stop structures, the middle transmission cylinder is connected to the first rotating component in the mode that the middle transmission cylinder can move relative to the axial direction but cannot rotate relative to the first rotating component and is in threaded connection with the second rotating component, and the middle transmission cylinder is restrained between the two stop structures in the axial direction. The middle transmission cylinder can axially move between the two stop structures while rotating around the rotating axis relative to the second rotating component through threaded connection, and when the middle transmission cylinder rotates relative to the second rotating component to abut against any one of the two stop structures, the middle transmission cylinder can rotate around the rotating axis relative to the second rotating component. The threaded connection can transmit torque in the corresponding rotating direction between the middle transmission cylinder and the second rotating component. The torque transmission device can reduce impact noise.

Description

Technical Field

[0001] The present invention relates to the field of transmission technology, and in particular to a novel torque transmission device. Background Art

[0002] In traditional mechanical transmission structures, torque is usually transmitted between different rotating parts through mutually engaged gear teeth or splines. In order to assemble the gear teeth or splines on different parts together, the mutually engaged gear teeth or splines are usually clearance-fitted, and the processing tolerance will also cause the generation of clearance. Due to the existence of this clearance, when the rotation direction of these transmission structures changes or the transmitted torque approaches zero, the gear teeth or splines will collide or vibrate, thereby causing noise. For example, in various motor vehicles, when the gear system in the gearbox or differential is in the transmission torque reversal or close to zero, noise that can be perceived by the driver or passengers in the car will be generated due to the above reasons, which greatly affects the driver's driving experience and the passenger's riding experience. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present invention is to provide a torque transmission device capable of reducing impact noise.

[0004] The above technical problems are solved by a torque transmission device according to the present invention. The torque transmission device includes a first rotating component and a second rotating component, which can rotate relative to each other around a rotation axis and are stationary relative to each other in the axial direction. The torque transmission device also includes an intermediate transmission cylinder and two stop structures, wherein the intermediate transmission cylinder is connected to the first rotating component in a manner that it can move relative to the axial direction but cannot rotate relative to each other, and is engaged with the second rotating component through a threaded connection, the intermediate transmission cylinder is axially constrained between the two stop structures, and the intermediate transmission cylinder can be threadedly connected while rotating relative to the second rotating component around the rotation axis and axially moving between the two stop structures, so that when the intermediate transmission cylinder rotates relative to the second rotating component to abut against any of the two stop structures, the threaded connection can transmit torque in the corresponding rotation direction between the intermediate transmission cylinder and the second rotating component. In this torque transmission device, when the torque transmission direction is changed, the intermediate transmission cylinder needs to first move axially from one end to the other end between the two stop structures before starting to transmit torque between the two rotating parts through the threaded connection. Therefore, the torque reversal process is delayed. At the same time, the threaded connection can provide a certain damping effect through friction during relative rotation, thereby reducing the impact of the transmission parts during torque reversal and the noise generated thereby. In addition, when the transmitted torque is close to zero, since the intermediate transmission cylinder is in a position that does not abut the stop structure, the two rotating parts achieve torque decoupling, thereby reducing vibration noise.

[0005] According to a preferred embodiment of the present invention, the torque transmission device may further include a volute spring and a spring support cylinder, the spring support cylinder being connected to the second rotating component in a manner that is relatively axially movable but not relatively rotatable, and being connected to the intermediate transmission cylinder in a manner that is not axially movable, and the two ends of the volute spring are respectively fixed to the intermediate transmission cylinder and the spring support cylinder, so that when the intermediate transmission cylinder abuts against any one of the two stop structures, the volute spring elastically deforms in the circumferential direction to generate an elastic force that causes the intermediate transmission cylinder to tend to rotate away from the corresponding stop structure. Since the torque required to rotate the intermediate transmission cylinder away from the two stop structures is in opposite directions, this means that when the intermediate transmission cylinder is located at a certain position between the two stop structures, the volute spring will be in a state without elastic deformation. The volute spring can provide a damping force during torque reversal or non-torque transmission state, thereby further buffering vibration.

[0006] According to another preferred embodiment of the present invention, the intermediate transmission cylinder may have a neutral position relative to the second rotating member, the neutral position being located at the axial midpoint of the two stop structures, and the spiral spring is in a non-elastic deformation state at the neutral position. Therefore, when in a non-torque transmission state, the intermediate transmission cylinder may be stabilized at the axial midpoint of the two stop structures.

[0007] According to another preferred embodiment of the present invention, within the allowable rotation range of the intermediate transmission cylinder relative to the second rotating component defined by the two stop structures, the volute spring may not reach the limit elastic deformation state, thereby ensuring that the volute spring can provide sufficient elastic force without being damaged.

[0008] According to another preferred embodiment of the present invention, the second rotating component may include a first cylindrical portion, a second cylindrical portion, and a first end plate and a second end plate as two stop structures, the first cylindrical portion and the second cylindrical portion are respectively arranged coaxially with the first rotating component, the second cylindrical portion is radially located between the first cylindrical portion and the first rotating component and is radially spaced apart, the first end plate is radially fixedly connected between the first cylindrical portion and the second cylindrical portion, the intermediate transmission cylinder is radially located between the first cylindrical portion and the second cylindrical portion, one of the first cylindrical portion and the second cylindrical portion is engaged with the intermediate transmission cylinder by a threaded connection, and the other is torsionally connected to the spring support cylinder and fixedly connected to the second end plate. The second rotating component is thus formed as an annular cylindrical component, one cylindrical portion of the annular cylindrical second rotating component is used to form a threaded connection, and the other cylindrical portion is used to support the spring support cylinder.

[0009] According to another preferred embodiment of the present invention, the intermediate transmission cylinder may include two bottom plates spaced apart in the axial direction, and the spring support cylinder is constrained between the two bottom plates in the axial direction, so that the spring support cylinder can be synchronously axially moved with the intermediate transmission cylinder relative to the second rotating component in a relatively rotatable manner, and the intermediate transmission cylinder can respectively abut against two stop structures through the two bottom plates, thereby ensuring that both ends of the volute spring move synchronously in the axial direction, so that the volute spring is elastically deformed in the circumferential direction only in a plane perpendicular to the axial direction.

[0010] According to another preferred embodiment of the present invention, the torque transmission device may further include one or more torque transmission contact plates, one of the two bottom plates includes one or more corresponding torque transmission grooves, each torque transmission contact plate is fixedly connected to the first rotating component and inserted into the corresponding torque transmission groove along the axial direction, so that each torque transmission contact plate and the intermediate transmission cylinder are stationary in the circumferential direction relative to each other but movable in the axial direction. Thus, an axially movable torsion-resistant connection of the intermediate transmission cylinder relative to the first rotating component is achieved through shape matching.

[0011] According to another preferred embodiment of the present invention, a radial gap may exist between one of the first cylindrical portion and the second cylindrical portion that is threadedly connected to the intermediate transmission cylinder and the second end plate, and each torque transmission contact plate may be inserted into the corresponding torque transmission groove via the radial gap. Therefore, the two cylindrical portions of the second rotating component are connected as one body through one end plate, and the other end plate is only used as a stop structure, and the radial gap allows the torque transmission contact plate to engage with the intermediate transmission cylinder.

[0012] According to another preferred embodiment of the present invention, the torque transmission device may further include two washers, which are respectively fixed to the two bottom plates, so that the intermediate transmission cylinder can indirectly abut the two stop structures via the two washers, thereby buffering the impact between the bottom plate and the stop structure.

[0013] According to another preferred embodiment of the present invention, one of the first cylindrical portion and the second cylindrical portion that is threadedly connected with the intermediate transmission cylinder can be located radially outside the other. The threaded connection formed radially outside can increase the radius of the threaded connection, thereby improving the torque transmission capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described below in conjunction with the accompanying drawings. The same reference numerals in the drawings represent elements with the same functions.

[0015] Figure 1 A longitudinal cross-sectional view showing a torque transmitting device according to an exemplary embodiment of the present invention; and

[0016] Figure 2 A front view of a torque transmitting device according to an exemplary embodiment of the present invention is shown. DETAILED DESCRIPTION

[0017] The following detailed description and drawings are used to illustrate the principle of the present invention. The present invention is not limited to the preferred embodiments described. The protection scope of the present invention is defined by the claims.

[0018] According to an embodiment of the present invention, a torque transmission device is provided. This torque transmission device can replace the traditional spline or gear torque transmission structure to transmit torque between two rotating parts. The exemplary embodiment of this torque transmission device is described below in conjunction with the accompanying drawings.

[0019] Figure 1 and Figure 2 1 and 2 show a longitudinal sectional view and a front view of a torque transmission device according to an exemplary embodiment of the present invention, respectively. Figure 1 As shown, the torque transmission device comprises a first rotating component 1 and a second rotating component 2. The first rotating component 1 and the second rotating component 2 are rotatable relative to each other about a common rotation axis and are stationary relative to each other in the axial direction.

[0020] The torque transmission device also includes an intermediate transmission cylinder 3 and two stop structures. The intermediate transmission cylinder 3 is connected to the first rotating component 1 in a manner that it can move relative to the axial direction but cannot rotate relative to the first rotating component 1, and is engaged with the second rotating component 2 through a threaded connection S. The two stop structures are spaced apart in the axial direction and are stationary relative to the second rotating component 2 in the axial direction, and in particular can be directly fixedly connected to the second rotating component 2 (for example, they can be formed as a part of the second rotating component 2). Such a stop structure can be, for example, two radially extending end plates formed on the second rotating component 2. The intermediate transmission cylinder 3 is constrained between the two stop structures in the axial direction, so that it can only move in the axial direction within the range defined by the two stop structures. The intermediate transmission cylinder 3 can move axially between the two stop structures while rotating relative to the second rotating component 2 around the rotation axis through the threaded connection S. Therefore, when the intermediate transmission cylinder 3 rotates relative to the second rotating component 2 to abut against any one of the two stop structures, the threaded connection S can transmit torque in the corresponding rotation direction between the intermediate transmission cylinder 3 and the second rotating component 2. The "corresponding rotation direction" here refers to the torque direction that keeps the first rotating component 1 and the corresponding stop structure in abutment at the current limit position. Due to the movement of the intermediate transmission cylinder 3 between the two stop structures, when the torque transmission device is in a non-torque transmission state, the decoupling between the two rotating components can be achieved, that is, the torque vibration of one rotating component will not be transmitted to the other rotating component. At the same time, due to the friction of the threaded connection, the impact force during torque reversal can also be buffered.

[0021] In a preferred embodiment, in order to further improve the buffering effect, a spiral spring 5 may be additionally provided in the torque transmission device. The specific arrangement of the spiral spring 5 is described below in conjunction with the accompanying drawings. Figure 1 As shown, the torque transmission device may also include a volute spring 5 and a spring support cylinder 4. The spring support cylinder 4 is connected to the second rotating component 2 in a manner that it can move relative to the axial direction but cannot rotate relative to the second rotating component, and is connected to the intermediate transmission cylinder 3 in a manner that it cannot move relative to the axial direction. The two ends of the volute spring 5 are respectively fixed to the intermediate transmission cylinder 3 and the spring support cylinder 4 in the same plane perpendicular to the rotation axis. When the intermediate transmission cylinder 3 abuts against any one of the two stop structures, the volute spring 5 elastically deforms in the circumferential direction to generate an elastic force that causes the intermediate transmission cylinder 3 to rotate away from the corresponding stop structure. When the first rotating component 1 drives the intermediate transmission cylinder 3 to rotate relative to the second rotating component 2, the intermediate transmission cylinder 3 moves axially between the two stop structures while rotating relative to the second rotating component 2 through the threaded connection S. At this time, the intermediate transmission cylinder 3 rotates relative to the spring support cylinder 4. This causes the volute spring 5 to elastically deform in the circumferential direction in a plane perpendicular to the axial direction. Since the elastic force of the volute spring 5 makes the intermediate transmission cylinder 3 tend to rotate away from the corresponding stop structure when the intermediate transmission cylinder 3 abuts against any of the two stop structures, the volute spring 5 will be in a state without elastic deformation at a certain position between the two stop structures. This position is called the neutral position of the intermediate transmission cylinder 3 relative to the second rotating component 2. When torque reversal occurs between the first rotating component 1 and the second rotating component 2, this elastic force of the volute spring 5 can buffer the impact force of the intermediate transmission cylinder 3 on the corresponding stop structure, and when vibration occurs in the non-torsion transmission state, this elastic force of the volute spring 5 can buffer the torque vibration and promote the intermediate transmission cylinder 3 to stabilize in the neutral position. Preferably, the neutral position can be located at the axial midpoint of the two stop structures, so that the distance moved by the intermediate transmission cylinder 3 from the center position to the two stop structures is the same. In addition, it is also preferred that within the allowable rotation range of the intermediate transmission cylinder 3 relative to the second rotating component 2 defined by the two stop structures, the volute spring 5 does not reach the limit elastic deformation state, thereby avoiding damage to the volute spring 5.

[0022] In the embodiment shown in the figure, the first rotating component 1 is located radially outside the second rotating component 2. The first rotating component 1 is formed into a cylindrical shape roughly around the rotation axis. The second rotating component 2 includes a first cylindrical portion 21, a second cylindrical portion 22, and a first end plate 23a and a second end plate 23b as two stop structures. The first cylindrical portion 21 and the second cylindrical portion 22 are both roughly cylindrical portions arranged coaxially with the first rotating component 1. The second cylindrical portion 22 is located radially between the first cylindrical portion 21 and the first rotating component 1, and is radially spaced from both. Thus, the first cylindrical portion 21 is located radially inside the second cylindrical portion 22, and the first rotating component 1 is located radially outside the second cylindrical portion 22. The first end plate 23a is fixedly connected radially between the first cylindrical portion 21 and the second cylindrical portion 22, in particular, between the axial ends of the first cylindrical portion 21 and the second cylindrical portion 22 facing the same direction. The intermediate transmission cylinder 3 is located radially between the first cylindrical portion 21 and the second cylindrical portion 22. A threaded connection S is formed between the second cylindrical portion 22 and the intermediate transmission cylinder 3. That is, an internal thread is formed on the radial inner surface of the second cylindrical portion 22, and a corresponding external thread is formed on the radial outer surface of the intermediate transmission cylinder 3, and the threads of the two are engaged with each other. The first cylindrical portion 21 is torsionally connected to the spring support cylinder 4, for example, by spline engagement, so that they can rotate synchronously while allowing the spring support cylinder 4 to move axially relative to the first cylindrical portion 21. The first cylindrical portion 21 is fixedly connected to the second end plate 23b. In particular, the second end plate 23b can extend radially toward the second cylindrical portion 22 from the other axial end of the first cylindrical portion opposite to the first end plate 23a, but is not connected to the second cylindrical portion 22, so as to provide space for the connection structure between the intermediate transmission cylinder 3 and the first rotating component 1.

[0023] The intermediate transmission cylinder 3 may include two bottom plates 31 spaced apart in the axial direction. Preferably, the two bottom plates 31 extend in planes substantially perpendicular to the axial direction and may be respectively connected to the axial ends of the cylindrical side wall of the intermediate transmission cylinder 3. The spring support cylinder 4 is constrained between the two bottom plates 31 in the axial direction, so that the spring support cylinder 4 and the intermediate transmission cylinder 3 remain substantially relatively stationary in the axial direction, and at the same time, the spring support cylinder 4 may be in circumferential sliding contact with the two bottom plates 31, so that the spring support cylinder 4 can rotate freely relative to the intermediate transmission cylinder 3. The spring support cylinder 4 can thus be axially moved synchronously with the intermediate transmission cylinder 3 relative to the second rotating component 2 in a relatively rotatable manner.

[0024] Preferably, when the two limit positions of the moving range are reached, the intermediate transmission cylinder 3 can respectively abut against two stop structures, namely, the first end plate 23a and the second end plate 23b in this embodiment, through two bottom plates 31. Further preferably, the torque transmission device also includes two gaskets 7. The two gaskets 7 are respectively fixed to the surfaces of the two bottom plates 31 that are axially away from each other. When the intermediate transmission cylinder 3 reaches the two limit positions of the moving range, the intermediate transmission cylinder 3 indirectly abuts against the two stop structures through the two gaskets 7. Therefore, the gaskets 7 can reduce the wear on the stop structure and the bottom plate 31, and the impact force can also be reduced.

[0025] In a preferred embodiment, the torque transmission connection between the first rotating component 1 and the intermediate transmission cylinder 3 can be achieved in the following manner. Specifically, the torque transmission device can also include one or more torque transmission touch plates 6, each of which is fixedly connected to the first rotating component 1, and can be formed integrally in particular. The plurality of torque transmission touch plates 6 can preferably be distributed at intervals in the circumferential direction, and in particular, at uniform intervals. One of the two bottom plates 31 facing the second end plate 23b includes one or more corresponding torque transmission grooves 32. Each torque transmission touch plate 6 is inserted into the corresponding torque transmission groove 32 in the axial direction, so that each torque transmission touch plate 6 and the intermediate transmission cylinder 3 are stationary in the circumferential direction and movable in the axial direction relative to each other. Each torque transmission touch plate 6 is kept in engagement with the corresponding torque transmission groove 32 within the range of movement. There is a radial gap between the second cylindrical portion 22 and the second end plate 23b, and each torque transmission touch plate 6 is inserted into the corresponding torque transmission groove 32 via the radial gap.

[0026] In the torque transmission device according to the present invention, the relative radial positions of the first rotating component 1 and the second rotating component 2 can be swapped. For example, the first rotating component 1 can be located radially inside the second rotating component 2. At this time, the first cylindrical portion 21 is located radially outside the second cylindrical portion 22, and the intermediate transmission cylinder 3 is still located between the first cylindrical portion 21 and the second cylindrical portion 22. In addition, the radial position of the threaded connection S can also be swapped, that is, the threaded connection S can be formed between any one of the first cylindrical portion 21 and the second cylindrical portion 22 and the intermediate transmission cylinder 3, and the other of the first cylindrical portion 21 and the second cylindrical portion 22 can be torsionally connected to the spring support cylinder 4. In this case, one of the first cylindrical portion 21 and the second cylindrical portion 22 that forms the threaded connection S with the intermediate transmission cylinder 3 is preferably located radially outside the other, which makes the threaded connection S have a larger force arm and thus has a greater torque transmission capacity.

[0027] The torque transmission device according to the present invention realizes the decoupling of two rotating parts in the non-torque transmission state through the threaded connection of the intermediate transmission cylinder, thereby reducing vibration and noise. The threaded connection can also buffer the impact force during the torque reversing process and the vibration in the decoupled state through friction. At the same time, the volute spring further buffers the impact force during the torque reversing process and the vibration in the decoupled state. This torque transmission device can be lubricated without grease, thereby simplifying the lubrication structure and reducing maintenance costs. In addition, this torque transmission device has a compact structure and can save layout space.

[0028] Although possible embodiments are described by way of example in the above description, it should be understood that there are still a large number of variations of embodiments through the combination of all known and other technical features and embodiments that are easily conceivable to the skilled person. It should also be understood that the exemplary embodiment is only an example and that such an embodiment in no way limits the scope of protection, application and configuration of the present invention. The above description is more to provide the skilled person with a technical guide for converting at least one exemplary embodiment, wherein various changes can be made, especially changes in the functions and structures of the components, as long as they do not depart from the scope of protection of the claims.

[0029] Reference numerals list

[0030] 1 First rotating part

[0031] 2 Second rotating member

[0032] 21 First cylindrical part

[0033] 22 Second cylindrical portion

[0034] 23a First end plate

[0035] 23b Second end plate

[0036] 3 Intermediate transmission cylinder

[0037] 31 Base Plate

[0038] 32 Torque Transmission Groove

[0039] 4 Spring support cylinder

[0040] 5. Spiral spring

[0041] 6 Torque Touchpad

[0042] 7 Gasket

[0043] S thread connection

Claims

1. A torque transmission device comprising a first rotating component (1) and a second rotating component (2), wherein the first rotating component (1) and the second rotating component (2) are rotatable relative to each other about a rotation axis and are stationary relative to each other in the axial direction, It is characterized in that The torque transmission device also includes an intermediate transmission cylinder (3) and two stop structures, wherein the intermediate transmission cylinder (3) is connected to the first rotating component (1) in a manner that it can move axially relative to the first rotating component (1) but cannot rotate relative to the first rotating component (1), and is engaged with the second rotating component (2) by a threaded connection (S), the two stop structures are axially spaced apart and axially stationary relative to the second rotating component (2), the intermediate transmission cylinder (3) is axially constrained between the two stop structures, and the intermediate transmission cylinder (3) can move axially between the two stop structures while rotating relative to the second rotating component (2) around the rotation axis through the threaded connection (S), so that when the intermediate transmission cylinder (3) rotates relative to the second rotating component (2) to abut against any one of the two stop structures, the threaded connection (S) can transmit torque in the corresponding rotation direction between the intermediate transmission cylinder (3) and the second rotating component (2).

2. The torque transmission device according to claim 1, It is characterized in that The torque transmission device further comprises a scroll spring (5) and a spring support cylinder (4), wherein the spring support cylinder (4) is connected to the second rotating component (2) in a manner that allows relative axial movement but not relative rotation, and is connected to the intermediate transmission cylinder (3) in a manner that does not allow axial movement, and wherein both ends of the scroll spring (5) are respectively fixed to the intermediate transmission cylinder (3) and the spring support cylinder (4), so that when the intermediate transmission cylinder (3) abuts against any one of the two stop structures, the scroll spring (5) elastically deforms in the circumferential direction to generate an elastic force that causes the intermediate transmission cylinder (3) to tend to rotate away from the corresponding stop structure.

3. The torque transmission device according to claim 2, It is characterized in that The intermediate transmission cylinder (3) has a neutral position relative to the second rotating component (2), the neutral position being located at the axial midpoint of the two stop structures, and the spiral spring (5) is in a non-elastic deformation state at the neutral position.

4. The torque transmission device according to claim 3, It is characterized in that Within the permissible rotation range of the intermediate transmission cylinder (3) relative to the second rotating component (2) defined by the two stop structures, the spiral spring (5) does not reach a limit elastic deformation state.

5. The torque transmission device according to claim 4, It is characterized in that The second rotating component (2) comprises a first cylindrical portion (21), a second cylindrical portion (22) and a first end plate (23a) and a second end plate (23b) as the two stop structures. The first cylindrical portion (21) and the second cylindrical portion (22) are respectively arranged coaxially with the first rotating component (1). The second cylindrical portion (22) is radially located between the first cylindrical portion (21) and the first rotating component (1) and is radially spaced apart. The first end plate (23a) is radially fixedly connected between the first cylindrical portion (21) and the second cylindrical portion (22). The intermediate transmission cylinder (3) is radially located between the first cylindrical portion (21) and the second cylindrical portion (22). One of the first cylindrical portion (21) and the second cylindrical portion (22) is engaged with the intermediate transmission cylinder (3) by the threaded connection (S), and the other is torsionally connected to the spring support cylinder (4) and fixedly connected to the second end plate (23b).

6. The torque transmission device according to claim 5, It is characterized in that The intermediate transmission cylinder (3) comprises two bottom plates (31) spaced apart in the axial direction, and the spring support cylinder (4) is axially constrained between the two bottom plates (31), so that it can move axially synchronously with the intermediate transmission cylinder (3) relative to the second rotating component (2) in a relatively rotatable manner, and the intermediate transmission cylinder (3) can respectively abut against the two stop structures through the two bottom plates (31).

7. The torque transmission device according to claim 6, It is characterized in that The torque transmission device also includes one or more torque transmission contact plates (6), one of the two base plates (31) includes one or more corresponding torque transmission grooves (32), each torque transmission contact plate (6) is fixedly connected to the first rotating component (1) and inserted axially into the corresponding torque transmission groove (32), so that each torque transmission contact plate (6) and the intermediate transmission cylinder (3) are stationary in the circumferential direction and movable in the axial direction relative to each other.

8. The torque transmission device according to claim 7, It is characterized in that A radial gap exists between the first cylindrical portion (21) and the second cylindrical portion (22) that forms the threaded connection (S) with the intermediate transmission cylinder (3) and the second end plate (23b), and each torque transmission contact plate (6) is inserted into the corresponding torque transmission groove (32) via the radial gap.

9. The torque transmission device according to claim 5, It is characterized in that The torque transmission device further comprises two washers (7), wherein the two washers (7) are respectively fixed to the two bottom plates (31), so that the intermediate transmission cylinder (3) can indirectly abut against the two stop structures respectively via the two washers (7).

10. A torque transmission device according to any one of claims 5 to 9, It is characterized in that The one of the first cylindrical portion (21) and the second cylindrical portion (22) that forms the threaded connection (S) with the intermediate transmission cylinder (3) is located radially outside the other.

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