Tightening device for motor shaft

Abstract

The utility model discloses a tightening device used for a motor shaft, the tightening device is used for tightening the motor shaft and a locking bolt, the tightening device comprises a locking assembly, the locking assembly comprises a mounting piece and a fixing piece, the mounting piece is suitable for being sleeved outside a motor gear of the motor shaft and is suitable for being fixed relative to a shell where the motor shaft is located, and the fixing piece is suitable for being fixed relative to the shell; a clamping piece is arranged in the mounting piece, and the fixing piece movably penetrates through the mounting piece and is used for pushing the clamping piece to press and lock the motor gear; and the tightening piece is suitable for acting in the locking bolt and is used for driving the locking bolt to rotate relative to the motor shaft. According to the tightening device for the motor shaft, the locking assembly is arranged, the mounting piece of the locking assembly is arranged outside the motor gear of the motor shaft in the sleeving mode, the clamping piece is pushed through the fixing piece, the motor gear is locked, then the motor shaft is fixed relative to the shell, the tightening device is simple in structure and convenient and fast to operate, single-person operation can be carried out, and the tightening efficiency is improved. The arrangement cost is low, the use effect is good, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a tightening device for a motor shaft. Background Art

[0002] During the trial production stage of motor shaft installation, the locking bolt of the motor shaft needs to be tightened relative to the motor shaft, and during the tightening process of the locking bolt, the motor shaft needs to be relatively fixed, that is, the motor shaft needs to be prevented from rotating. The existing tightening device has a complex structure, is difficult to operate, and has a high installation cost, so there is room for improvement. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a tightening device for a motor shaft, which has a simple structure, is easy to operate, can be operated by one person, and has a low setting cost.

[0004] According to the tightening device for the motor shaft of the embodiment of the utility model, the tightening device is used to tighten the motor shaft and the locking bolt, and the tightening device includes: a locking assembly, the locking assembly includes a mounting piece and a fixing piece, the mounting piece is suitable for being sleeved on the outside of the motor gear of the motor shaft, and the mounting piece is suitable for being fixed relative to the housing where the motor shaft is located, a clamping piece is provided in the mounting piece, the fixing piece can be movably passed through the mounting piece and is used to push the clamping piece to press and lock the motor gear; a tightening piece, the tightening piece is suitable for acting in the locking bolt and is used to drive the locking bolt to rotate relative to the motor shaft.

[0005] According to the tightening device for the motor shaft of the embodiment of the utility model, a locking assembly is provided, the mounting piece of the locking assembly is sleeved on the outside of the motor gear of the motor shaft, and the clamping piece is pushed by the fixing piece to lock the motor gear, thereby fixing the motor shaft relative to the housing. The structure is simple, the operation is convenient, and it can be operated by one person. In addition, the setting cost is low, the use effect is good, and the application range is wide.

[0006] According to some embodiments of the tightening device for a motor shaft of the present invention, the clamping member includes a rigid layer and an elastic layer, the elastic layer is located on the inner side of the rigid layer, and the clamping member is suitable for pressing against the outer side of the rigid layer to push the elastic layer to press the motor gear.

[0007] According to some embodiments of the tightening device for a motor shaft of the utility model, the rigid layer and the elastic layer are both constructed as an arc structure extending along the circumference of the motor gear, the elastic layer is attached to the inner side of the rigid layer, and the rigid layer and the elastic layer are both arranged to be opposite to the fixing part along the radial direction of the motor gear.

[0008] According to the tightening device for a motor shaft in some embodiments of the present utility model, the thickness of the elastic layer is set to be greater than or equal to the thickness of the rigid layer.

[0009] According to some embodiments of the present invention, the tightening device for the motor shaft includes a mounting portion and at least one connecting portion, the connecting portion is connected to the mounting portion, the connecting portion is suitable for being relatively fixed to the shell through a connecting portion, the mounting portion is constructed in a sleeve shape and is sleeved outside the motor gear, and the fixing member can be movably inserted into the mounting portion.

[0010] According to some embodiments of the tightening device for a motor shaft of the present invention, there are multiple clamping members and they are distributed in the mounting portion at intervals along the circumference of the mounting portion; there are multiple fixing members and the multiple fixing members are respectively and one by one arranged on the outside of the multiple clamping members.

[0011] According to some embodiments of the tightening device for a motor shaft of the present utility model, there are two clamping members, the two clamping members are distributed in the mounting portion at intervals along the circumference of the mounting portion, and the two clamping members are distributed opposite to each other along the radial direction of the mounting portion; there are two fixing members, and the two fixing members are respectively and one-to-one arranged on the outer sides of the two clamping members.

[0012] According to some embodiments of the tightening device for a motor shaft of the present invention, the connecting portion is arranged to protrude radially outward from the outer peripheral wall of the mounting portion along the mounting portion, and the connecting portion and the fixing member are spaced apart and distributed in the circumferential direction of the mounting portion.

[0013] According to the tightening device for a motor shaft in some embodiments of the utility model, the mounting portion is formed with a deformation notch that is disconnected in the circumferential direction.

[0014] According to some embodiments of the tightening device for a motor shaft of the present utility model, the fixing member is provided with a threaded section, the mounting member has a threaded hole, the fixing member is passed through the threaded hole and the threaded section is threadedly matched with the threaded hole.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 is a cross-sectional view of a tightening device according to an embodiment of the utility model;

[0018] Figure 2 The structure of the tightening device according to the embodiment of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 3 The structure of the tightening device according to the embodiment of the utility model is shown in FIG. Figure 2 .

[0020] Reference numerals:

[0021] Motor shaft 1, motor gear 2, housing 3, locking bolt 4,

[0022] Tightening device 5, mounting member 51, mounting portion 511, deformation notch 5111, connecting portion 512, connecting member 52, clamping member 53, rigid layer 531, elastic layer 532, fixing member 54, tightening member 55,

[0023] Bearing 6, retaining ring 7. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Reference below Figure 1-Figure 3 The tightening device 5 for the motor shaft 1 according to the embodiment of the utility model is described, which has a simple structure, is easy to operate, can be operated by one person, and has a low setting cost.

[0028] like Figure 1-Figure 3 As shown, according to an embodiment of the present utility model, a tightening device 5 for a motor shaft 1 is provided. The tightening device 5 is used to tighten the motor shaft 1 with a locking bolt 4 . The tightening device 5 includes: a locking assembly and a tightening member 55 .

[0029] The locking assembly includes a mounting member 51 and a fixing member 54. The mounting member 51 is suitable for being sleeved on the outside of the motor gear 2 of the motor shaft 1, and the mounting member 51 is suitable for being fixed relative to the housing 3 where the motor shaft 1 is located. A clamping member 53 is provided in the mounting member 51. The fixing member 54 can be movably passed through the mounting member 51 and is used to push the clamping member 53 to press and lock the motor gear 2. The tightening member 55 is suitable for acting on the locking bolt 4 and is used to drive the locking bolt 4 to rotate relative to the motor shaft 1.

[0030] Specifically, during the trial production and installation process, the motor shaft 1 needs to be installed in the housing 3. The motor shaft 1 is configured as a hollow stepped cylindrical structure. A bearing 6 is arranged between the motor shaft 1 and the housing 3. The bearing 6 can provide support force for the motor shaft 1, and the bearing 6 is correspondingly provided with a retaining spring 7 to limit the bearing 6 and ensure the reliability of the bearing 6. A motor gear 2 is arranged at one end of the motor shaft 1. The motor gear 2 is sleeved on the outer wall of one end of the motor shaft 1, and the motor gear 2 and the motor shaft 1 can be connected by a spline, etc., so that the motor gear 2 and the motor shaft 1 are relatively fixed along the circumference of the motor shaft 1.

[0031] The motor shaft 1 is provided with a tightening device 5, so that the motor shaft 1 can be fixed relative to the housing 3 during the trial production and installation process, so that the locking bolt 4 can be installed on the motor shaft 1, and the inner wall of one end of the motor shaft 1 where the motor gear 2 is installed is provided with a threaded structure, so that the locking bolt 4 can be connected to the motor shaft 1 by rotation. When the locking bolt 4 is installed on the motor shaft 1, the displacement of the motor gear 2 in the axial direction of the motor shaft 1 can be limited, thereby ensuring the reliability of the operation of the motor shaft 1.

[0032] Furthermore, the tightening device 5 is provided with a locking assembly, and the locking assembly is provided with a mounting member 51 and a fixing member 54. The mounting member 51 can be sleeved on the outside of the motor gear 2, and the mounting member 51 can be relatively fixed to the housing 3 through a connecting member 52, etc. A clamping member 53 is provided in the mounting member 51, that is, the clamping member 53 is provided between the mounting member 51 and the motor gear 2, and the fixing member 54 is passed through the mounting member 51 and is movable relative to the mounting member 51, so that the fixing member 54 can be moved to push the clamping member 53 to press against the motor gear 2.

[0033] When the fixing member 54 is inserted through the mounting member 51 and moves in a direction away from the motor shaft 1, the clamping member 53 does not apply a force to the motor gear 2. At this time, when the locking bolt 4 is installed on the motor shaft 1, the motor shaft 1 can rotate relative to the housing 3. When the fixing member 54 is inserted through the mounting member 51 and moves in a direction toward the motor shaft 1, the clamping member 53 can apply a clamping force to the motor gear 2, so that the friction between the motor gear 2 and the clamping member 53 is increased, thereby fixing the motor gear 2 relative to the housing 3. The motor gear 2 and the motor shaft 1 are connected by splines, etc., so that the motor shaft 1 is also fixed relative to the housing 3. At this time, when the locking bolt 4 is installed on the motor shaft 1, the motor shaft 1 can remain stationary, which is convenient for the installation of the locking bolt 4. The tightening device 5 is also provided with a tightening member 55, which can be fixed relative to the locking bolt 4, and then when the motor shaft 1 is fixed relative to the housing 3, the locking bolt 4 can be driven to rotate relative to the motor shaft 1 to install the locking bolt 4 on the motor shaft 1 for easy operation.

[0034] According to the tightening device 5 for the motor shaft 1 according to the embodiment of the utility model, a locking assembly is provided, the mounting member 51 of the locking assembly is sleeved on the outside of the motor gear 2 of the motor shaft 1, and the clamping member 53 is pushed by the fixing member 54 to lock the motor gear 2, thereby fixing the motor shaft 1 relative to the housing 3. The structure is simple, the operation is convenient, and it can be operated by one person. In addition, the setting cost is low, the use effect is good, and the application range is wide.

[0035] In some embodiments, the clamping member 53 includes a rigid layer 531 and an elastic layer 532 , the elastic layer 532 is located on the inner side of the rigid layer 531 , and the clamping member 53 is suitable for pressing against the outer side of the rigid layer 531 to push the elastic layer 532 to press the motor gear 2 .

[0036] Specifically, Figure 2As shown, a clamping member 53 is provided between the mounting member 51 and the motor gear 2, and a fixing member 54 can be passed through the mounting member 51 and pressed against the clamping member 53 to apply a pressing force to the motor gear 2, so that the motor gear 2 is relatively fixed to the housing 3, wherein the clamping member 53 is provided with a rigid layer 531 and an elastic layer 532, the rigid layer 531 can be made of materials such as iron, and the elastic layer 532 can be made of materials such as polyurethane, polyurethane has good stability, chemical resistance, resilience and mechanical properties, etc., the elastic layer 532 is arranged on the inner side of the rigid layer 531, that is, the elastic layer 532 is arranged between the rigid layer 531 and the motor gear 2, when the fixing member 54 is pressed against the clamping member 53, it first acts on the rigid layer 531, and transmits the force to the elastic layer 532 through the rigid layer 531, so that the elastic layer 532 acts on the motor gear 2.

[0037] Furthermore, when the fixing member 54 applies a force to the clamping member 53, the rigid layer 531 can play a supporting role, so that when the fixing member 54 withdraws the force, the clamping member 53 can return to its original state, and the elastic layer 532 is arranged between the rigid layer 531 and the motor gear 2. When the fixing member 54 applies a force to the clamping member 53, the elastic layer 532 can buffer the resistance force to prevent the rigid layer 531 from directly contacting the motor gear 2, thereby causing damage to the motor gear 2, thereby extending the service life of the motor gear 2, and when the elastic layer 532 is subjected to the resistance pressure and contacts with the motor gear 2, the friction between the elastic layer 532 and the motor gear 2 can be increased to ensure the reliability of fixing the motor gear 2.

[0038] In some embodiments, the rigid layer 531 and the elastic layer 532 are both constructed as arc structures extending along the circumference of the motor gear 2, the elastic layer 532 is attached to the inner side of the rigid layer 531, and the rigid layer 531 and the elastic layer 532 are both arranged to be opposite to the fixing member 54 along the radial direction of the motor gear 2.

[0039] Specifically, a clamping member 53 is provided between the mounting member 51 and the motor gear 2, and the clamping member 53 is provided with a rigid layer 531 and an elastic layer 532, the fixing member 54 can press against the rigid layer 531, and then can squeeze the elastic layer 532, increase the friction between the elastic layer 532 and the motor gear 2, so that the motor gear 2 is relatively fixed, and the rigid layer 531 and the elastic layer 532 are both constructed as an arc structure extending along the circumference of the motor gear 2, that is, the rigid layer 531 and the elastic layer 532 can be set as an annular structure, and the rigid layer 531 can be 31 and the elastic layer 532 are sleeved on the outside of the motor gear 2, and the elastic layer 532 can be fitted on the inner side of the rigid layer 531, that is, one side of the elastic layer 532 can be in contact with the motor gear 2, and the other side is fitted with the inner side of the rigid layer 531, and the rigid layer 531 and the elastic layer 532 are both arranged to be opposite to the fixing member 54 along the radial direction of the motor gear 2, so that when the fixing member 54 moves in the direction toward the motor shaft 1, it can first be pressed against the rigid layer 531, and then the elastic layer 532 can be pressed against the motor gear 2 to fix the motor gear 2.

[0040] In some embodiments, the thickness of the elastic layer 532 is set to be greater than or equal to the thickness of the rigid layer 531 .

[0041] Specifically, a clamping member 53 is provided between the mounting member 51 and the motor gear 2, and the clamping member 53 is provided with a rigid layer 531 and an elastic layer 532. The fixing member 54 can be penetrated through the mounting member 51 and pressed against the rigid layer 531 of the clamping member 53, so that the elastic layer 532 is in contact with the motor gear 2, so as to apply a pressing force to the motor gear 2, so that the motor gear 2 and the housing 3 are relatively fixed, and the thickness of the elastic layer 532 is set to be greater than or equal to the thickness of the rigid layer 531, that is, the thickness of the elastic layer 532 can be set to It is equal to the thickness of the rigid layer 531, and can also be set to be greater than the thickness of the rigid layer 531. The rigid layer 531 can play a supporting role to ensure that the clamping member 53 can return to its original state. The elastic layer 532 can buffer the resistance pressure and increase the friction between the motor gear 2. Setting the elastic layer 532 thicker can ensure the reliability of buffering. The friction between the elastic layer 532 and the motor gear 2 can cause the elastic layer 532 to wear. Setting the thickness of the elastic layer 532 thicker can extend the service life of the clamping member 53.

[0042] In some embodiments, the mounting member 51 includes a mounting portion 511 and at least one connecting portion 512, the connecting portion 512 is connected to the mounting portion 511, the connecting portion 512 is suitable for being relatively fixed to the shell 3 through the connecting member 52, the mounting portion 511 is constructed in a sleeve shape and is sleeved on the outside of the motor gear 2, and the fixing member 54 can be movably inserted into the mounting portion 511.

[0043] Specifically, the locking assembly is provided with a mounting member 51 and a fixing member 54. The mounting member 51 can be sleeved on the outside of the motor gear 2, and the mounting member 51 can be relatively fixed to the shell 3 through a connecting member 52, etc. The mounting member 51 is provided with a mounting portion 511 and a connecting portion 512. The connecting portion 512 is provided with at least one, that is, the connecting portion 512 can be provided with one, two or more. One end of the connecting portion 512 is connected to the mounting portion 511, and the other end is connected to the shell 3 through the connecting member 52, so that the mounting member 51 is fixed relative to the shell 3. The connecting member 52 can be provided with a bolt, etc., and the shell 3 can be provided with a threaded hole, and then the connecting member 52 can be installed on the shell 3 by twisting, etc., so that the mounting member 51 is installed on the shell 3. The structure is simple and the installation cost is low.

[0044] Furthermore, the mounting portion 511 is configured as a sleeve-shaped structure, and the mounting portion 511 is sleeved on the outside of the motor gear 2, the clamping member 53 is arranged between the mounting portion 511 and the motor gear 2, and the fixing member 54 is passed through the mounting portion 511 and is movable relative to the mounting portion 511, that is, when the fixing member 54 is passed through the mounting portion 511 and moves in a direction away from the motor shaft 1, the motor shaft 1 can rotate relative to the housing 3, and when the fixing member 54 is passed through the mounting portion 511 and moves in a direction toward the motor shaft 1, the clamping member 53 can apply a clamping force to the motor gear 2, so that the motor gear 2 is fixed relative to the housing 3, and then the motor shaft 1 is fixed relative to the housing 3.

[0045] In some embodiments, there are multiple clamping members 53 and they are distributed in the mounting portion 511 at intervals along the circumference of the mounting portion 511 ; there are multiple fixing members 54 and the multiple fixing members 54 are respectively disposed on the outer sides of the multiple clamping members 53 in a one-to-one correspondence.

[0046] Specifically, the clamping member 53 is arranged in the mounting portion 511, and the fixing member 54 can be inserted into the mounting portion 511, and then pressed against the clamping member 53, so that the clamping member 53 presses against the outer wall of the motor gear 2 to fix the motor gear 2. The clamping member 53 can be provided in plurality, that is, the clamping member 53 can be provided in two, three, etc., and the plurality of clamping members 53 can be distributed in the mounting portion 511 at intervals along the circumference of the mounting portion 511, that is, a plurality of clamping members 53 can be provided between the mounting portion 511 and the motor gear 2, and the fixing member 54 can apply a pressing force to the clamping member 53, so that the clamping member 53 The fixing member 53 is pressed against the outside of the motor gear 2 to fix the motor gear 2. The fixing member 54 is penetrated by the mounting member 51 and is movable relative to the mounting member 51. The fixing member 54 can be provided in plurality, that is, the fixing member 54 can be provided in two, three, etc., and the plurality of fixing members 54 can be penetrated by the mounting member 51, and the plurality of fixing members 54 are respectively and one by one arranged on the outside of the plurality of clamping members 53, that is, each fixing member 54 can be pressed against the clamping member 53 when moving in the direction toward the motor shaft 1, so that the fixing member 54 can be prevented from damaging the motor gear 2 and the effectiveness of the pressing can be ensured.

[0047] In some embodiments, there are two clamping members 53, and the two clamping members 53 are distributed in the mounting portion 511 at intervals along the circumference of the mounting portion 511, and the two clamping members 53 are distributed opposite to each other along the radial direction of the mounting portion 511; there are two fixing members 54, and the two fixing members 54 are respectively arranged on the outer sides of the two clamping members 53 in a one-to-one correspondence.

[0048] Specifically, the clamping member 53 is arranged in the mounting portion 511, and the fixing member 54 can be passed through the mounting portion 511, and then pressed against the clamping member 53, so that the clamping member 53 presses against the outer wall of the motor gear 2 to fix the motor gear 2. The clamping member 53 can be provided in two, and the two clamping members 53 are distributed in the mounting portion 511 at intervals along the circumference of the mounting portion 511, and the two clamping members 53 are distributed in the radial direction of the mounting portion 511. The fixing member 54 can apply a pressing force to the clamping member 53, so that the clamping member 53 presses against the outside of the motor gear 2 to fix the motor gear 2. The fixing member 54 is passed through the mounting portion 51 and is relative to the mounting member 51. 1 is movable, and two fixing members 54 can be provided, and both fixing members 54 can be passed through the mounting member 51, and the two fixing members 54 are respectively and one by one provided on the outer sides of the two clamping members 53, that is, each fixing member 54 can be pressed against the clamping member 53 when moving in the direction toward the motor shaft 1, which can prevent the fixing member 54 from damaging the motor gear 2 and ensure the effectiveness of the pressing. At the same time, in this embodiment, the connecting line of the two fixing members 54 is perpendicular to the straight line where the connecting portion 512 is located, so that when the locking bolt 4 is tightened, the direction of the friction force between the fixing member 54 and the clamping member 53 is parallel to the straight line where the connecting portion 512 is located, thereby ensuring the reliability of clamping.

[0049] In some embodiments, the connection portion 512 is disposed to protrude outwardly from the outer peripheral wall of the mounting portion 511 along the radial direction of the mounting portion 511 , and the connection portion 512 and the fixing member 54 are spaced apart and distributed in the circumferential direction of the mounting portion 511 .

[0050] Specifically, the mounting member 51 is provided with a connecting portion 512 and a mounting portion 511, one end of the connecting portion 512 is connected to the mounting portion 511, and the other end is connected to the housing 3 through the connecting portion 52, so that the mounting member 51 is fixed relative to the housing 3, the connection between the connecting portion 512 and the mounting portion 511 is located at the outer peripheral wall of the mounting portion 511, and the connecting portion 512 is arranged to protrude radially outward from the mounting portion 511, and the connecting portion 512 can be arranged to be a columnar or plate-like structure, etc., and the connecting portion 512 is arranged to protrude radially outward from the mounting portion 511, so that the connecting portion 512 can be extended in a direction away from the motor shaft 1, and then can be connected to the housing 3 through the connecting portion 52, so as to avoid affecting the tightening of the locking bolt 4, and the connecting portion 512 and the fixing member 54 are spaced apart and distributed in the circumferential direction of the mounting portion 511, and the fixing member 54 is movable relative to the mounting portion 511, and the fixing member 54 and the connecting portion 512 are spaced apart to facilitate the operation of the fixing member 54, thereby improving the working efficiency.

[0051] In some embodiments, the mounting portion 511 is formed with a deformation notch 5111 that is disconnected in the circumferential direction. Figure 2 As shown, the mounting member 51 is provided with a mounting portion 511 and a connecting portion 512, the mounting portion 511 is sleeved on the outside of the motor gear 2, and the fixing member 54 is passed through the mounting portion 511, a clamping member 53 is provided in the mounting portion 511, the fixing member 54 can be pressed against the clamping member 53, so that the motor gear 2 is relatively fixed, and the mounting portion 511 is provided with a deformation notch 5111, and the deformation notch 5111 is arranged on the circumference of the mounting portion 511, so that the inner diameter size of the mounting portion 511 can be adjusted within a certain range, so that the mounting portion 511 can be suitable for motor shafts 1 of different sizes, thereby improving the compatibility of the tightening device 5.

[0052] In some embodiments, the fixing member 54 is provided with a threaded section, the mounting member 51 has a threaded hole, the fixing member 54 is passed through the threaded hole, and the threaded section is threadedly matched with the threaded hole.

[0053] Specifically, Figure 1-Figure 3As shown, the fixing member 54 is penetrated by the mounting member 51 and is movable relative to the mounting member 51. When the fixing member 54 moves relative to the mounting member 51 toward the motor shaft 1, it can be pressed against the clamping member 53, thereby fixing the motor shaft 1 relative to the housing 3. The fixing member 54 can be set as a bolt, etc., which is provided with a threaded section, and the mounting member 51 is provided with a threaded hole. When the fixing member 54 is penetrated by the mounting member 51, the threaded section of the fixing member 54 can cooperate with the thread of the threaded hole, and then by screwing the fixing member 54, the fixing member 54 can be movable relative to the mounting member 51, that is, when the fixing member 54 is screwed in a first direction, the fixing member 54 can move in a direction toward the motor shaft 1, and then can be pressed against the clamping member 53. When the fixing member 54 is screwed in a second direction, the fixing member 54 can move in a direction away from the motor shaft 1, and then can be away from the clamping member 53. The threaded connection allows the fixing member 54 to be self-locking after being installed on the mounting member 51, thereby improving the reliability of the clamping force.

[0054] Among them, the directions of the first direction and the second direction are opposite, that is, one of the first direction and the second direction can be set to a clockwise direction, and the other can be set to a counterclockwise direction, that is, the first direction can be set to a clockwise direction and the second direction can be set to a counterclockwise direction, or the first direction can be set to a counterclockwise direction and the second direction can be set to a clockwise direction. In this embodiment, the first direction refers to a clockwise direction and the second direction refers to a counterclockwise direction.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A tightening device for a motor shaft, the tightening device is used to tighten the motor shaft with a locking bolt, characterized in that: The tightening device comprises: A locking assembly, the locking assembly comprising a mounting member and a fixing member, the mounting member being adapted to be sleeved outside the motor gear of the motor shaft, and the mounting member being adapted to be fixed relative to the housing where the motor shaft is located, a clamping member being arranged inside the mounting member, and the fixing member being movably arranged through the mounting member and used to push the clamping member to press and lock the motor gear; A tightening member, wherein the tightening member is adapted to act in the locking bolt and to drive the locking bolt to rotate relative to the motor shaft.

2. The tightening device for a motor shaft according to claim 1, characterized in that: The clamping member comprises a rigid layer and an elastic layer, the elastic layer is located on the inner side of the rigid layer, and the clamping member is suitable for pressing against the outer side of the rigid layer to push the elastic layer to press the motor gear.

3. The tightening device for a motor shaft according to claim 2, characterized in that: The rigid layer and the elastic layer are both constructed as arc structures extending along the circumference of the motor gear, the elastic layer is attached to the inner side of the rigid layer, and the rigid layer and the elastic layer are both arranged to face the fixing part along the radial direction of the motor gear.

4. The tightening device for a motor shaft according to claim 2, characterized in that: The thickness of the elastic layer is set to be greater than or equal to the thickness of the rigid layer.

5. The tightening device for a motor shaft according to any one of claims 1 to 4, characterized in that: The mounting member includes a mounting portion and at least one connecting portion, wherein the connecting portion is connected to the mounting portion, and the connecting portion is suitable for being relatively fixed to the shell through the connecting member. The mounting portion is constructed in a sleeve shape and is sleeved outside the motor gear, and the fixing member can be movably inserted into the mounting portion.

6. The tightening device for a motor shaft according to claim 5, characterized in that: The clamping members are multiple and are distributed in the mounting portion at intervals along the circumference of the mounting portion; There are multiple fixing members, and the multiple fixing members are respectively arranged on the outer sides of the multiple clamping members in a one-to-one correspondence.

7. The tightening device for a motor shaft according to claim 5, characterized in that: There are two clamping members, the two clamping members are distributed in the mounting portion at intervals along the circumference of the mounting portion, and the two clamping members are distributed opposite to each other along the radial direction of the mounting portion; There are two fixing members, and the two fixing members are respectively arranged on the outer sides of the two clamping members in a one-to-one correspondence.

8. The tightening device for a motor shaft according to claim 5, characterized in that: The connecting portion is arranged to protrude outwardly from the outer peripheral wall of the mounting portion along the radial direction of the mounting portion, and the connecting portion and the fixing member are spaced apart and distributed in the circumferential direction of the mounting portion.

9. The tightening device for a motor shaft according to claim 5, characterized in that: The mounting portion is formed with a deformation notch which is interrupted in the circumferential direction.

10. The tightening device for a motor shaft according to any one of claims 1 to 4, characterized in that: The fixing piece is provided with a threaded section, the mounting piece has a threaded hole, the fixing piece is passed through the threaded hole and the threaded section is threadedly matched with the threaded hole.

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