Pressure head device for rotor

Abstract

The utility model discloses a pressure head device for a rotor. A press-fitting shell defines an accommodating space; the centering assembly comprises a press-fitting centering shaft and a first elastic piece, the press-fitting centering shaft is movably arranged in the containing space in a penetrating mode, and the first elastic piece is arranged on the press-fitting centering shaft in a sleeving mode; the positioning press-fitting assembly comprises a press-fitting positioning ring and a second elastic piece, the press-fitting positioning ring is movably arranged in the containing space, and the second elastic piece is arranged in the containing space; the retention assembly comprises a retention body and a plurality of third elastic pieces, the retention body is arranged on the press-fitting shell, one end of each third elastic piece can abut against the retention body, and the other opposite end of each third elastic piece is suitable for retention of the to-be-press-fitted piece. Therefore, through the pressure head device, the rotor can be flexibly pressed, so that the probability that the rotor shaft and the bearing of the rotor shaft are stressed unevenly can be reduced, the probability that the rotor shaft and / or the bearing are / is damaged can be reduced, the success rate of press fitting is improved, and the press fitting efficiency of the rotor is improved.

Description

Technical Field

[0001] The utility model relates to the field of assembly tools, in particular to a pressure head device for a rotor. Background Art

[0002] In the related art, multiple magnetic components and a pressing head device are often required to cooperate and adjust with each other when pressing the rotor to achieve the purpose of positioning and pressing. However, the existing pressing head device has an unreasonable structural design and cannot flexibly press the rotor, which can easily lead to uneven force on the rotor shaft and its bearings, and easily cause damage to the rotor shaft and / or bearings, which may lead to failure of the pressing process. 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, one purpose of the utility model is to provide a pressing head device for a rotor, which can flexibly press-fit the rotor, thereby improving the success rate of press-fitting and improving the efficiency of rotor press-fitting.

[0004] According to the utility model, the pressure head device for the rotor includes: a press-fitting shell, which defines a accommodating space; a centering component, which includes: a press-fitting centering shaft and a first elastic member, the press-fitting centering shaft can be movably inserted into the accommodating space, the first elastic member is sleeved on the press-fitting centering shaft, and along the first direction, the opposite ends of the first elastic member can respectively abut against the press-fitting shell and the shoulders of the press-fitting centering shaft; a positioning press-fitting component, which includes: a press-fitting positioning ring and a second elastic member, the press-fitting positioning ring can be movably arranged in the accommodating space, the second elastic member is arranged in the accommodating space, and along the first direction, the opposite ends of the second elastic member can respectively abut against the press-fitting shell and the press-fitting positioning ring; a retention component, which includes: a retention body and a plurality of third elastic members, the retention body is arranged in the press-fitting shell, the plurality of third elastic members are arranged around the first direction as the axis, one end of the third elastic member can abut against the retention body, and the other opposite end of the third elastic member is suitable for retaining the part to be pressed.

[0005] According to the pressing head device for the rotor of the utility model, the rotor can be flexibly pressed, thereby reducing the probability of uneven force on the rotor shaft and its bearings, and reducing the probability of damage to the rotor shaft and / or bearings, which is beneficial to improving the success rate of press-fitting and improving the efficiency of rotor press-fitting.

[0006] In some examples of the present invention, the retention assembly further includes: a fourth elastic member, and along the first direction, opposite ends of the fourth elastic member can respectively abut against the retention body and the press-fit shell.

[0007] In some examples of the present invention, the press-fit housing has a first protrusion protruding toward the accommodating space, and the first elastic member can abut against the first protrusion.

[0008] In some examples of the present invention, the press-fit housing has a second protrusion protruding toward the accommodating space, and the second elastic member can abut against the second protrusion.

[0009] In some examples of the present invention, the centering assembly further includes: a first bushing and a second bushing, both of which are sleeved on the press-fit centering shaft, the first bushing is fixedly connected to the press-fit housing, and the second bushing is fixedly connected to the press-fit positioning ring.

[0010] In some examples of the present invention, the centering assembly further includes: a press-fit centering head, which is arranged at one end of the press-fit centering shaft relatively close to the retention assembly and has a guide surface, and the guide surface gradually approaches the axis of the press-fit centering shaft from the end of the press-fit centering head close to the press-fit centering shaft to the end away from the press-fit centering shaft.

[0011] In some examples of the present invention, the press-fit housing includes a first sub-housing and a second sub-housing connected to each other, and the press-fit positioning ring has a third protrusion, and along the first direction, the third protrusion abuts against an end of the second sub-housing close to the first sub-housing.

[0012] In some examples of the present invention, the positioning and pressing assembly also includes: a third bushing, the third bushing is located between the press-fitting positioning ring and the second sub-shell, the second sub-shell has a fourth protrusion protruding toward the accommodating space, and along the first direction, the third bushing is arranged between the third protrusion and the fourth protrusion.

[0013] In some examples of the present invention, the retention body has a plurality of first matching holes, the press-fit shell has a plurality of second matching holes, the plurality of second matching holes correspond one-to-one to the plurality of first matching holes and all extend along the first direction, and the retention assembly also includes: a plurality of limit members, the plurality of limit members are all passed through the corresponding first matching holes and fixedly connected to the retention body, and a partial structure of each of the limit members is located in the corresponding second matching hole.

[0014] In some examples of the present invention, the retention assembly also includes: a plurality of contact members, the plurality of contact members corresponding one-to-one to the plurality of third elastic members, the contact members having a spherical surface, the third elastic member being used to apply a force to the contact members so that the spherical surfaces of the plurality of contact members contact the parts to be pressed, so as to retain the parts to be pressed.

[0015] In some examples of the present invention, the retention body has a plurality of mounting holes, a plurality of the third elastic members are respectively disposed in the plurality of mounting holes, and partial structures of a plurality of the contact members are respectively disposed in the plurality of mounting holes.

[0016] 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

[0017] 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:

[0018] Figure 1 is a perspective view of a pressure head device according to an embodiment of the utility model;

[0019] Figure 2 is a cross-sectional view of a pressure head device according to an embodiment of the utility model;

[0020] Figure 3 is a cross-sectional view of a press-fit housing according to an embodiment of the utility model;

[0021] Figure 4 is a schematic diagram of a centering assembly according to an embodiment of the utility model;

[0022] Figure 5 is a schematic diagram of a positioning press-fit assembly according to an embodiment of the utility model;

[0023] Figure 6 is a cross-sectional view of a positioning press-fit assembly according to an embodiment of the utility model;

[0024] Figure 7 is a schematic diagram of a retention assembly according to an embodiment of the utility model;

[0025] Figure 8 is a cross-sectional view of a retention assembly according to an embodiment of the utility model;

[0026] Fig. 9 is a schematic diagram of a rotor shaft according to an embodiment of the utility model;

[0027] Fig.10 It is a schematic diagram of a bearing pressure ring retained by a pressure head device according to an embodiment of the utility model;

[0028] Fig.11 It is a cross-sectional view of the pressure head device according to the embodiment of the utility model when it cooperates with the rotor shaft.

[0029] Reference numerals:

[0030] Press head device 100;

[0031] Press-fit housing 10; first sub-housing 11; second sub-housing 12; fourth protrusion 121; accommodating space 13; first protrusion 14; second protrusion 15; second matching hole 16;

[0032] Centering assembly 20; press-fit centering shaft 21; first elastic member 22; first bushing 23; second bushing 24; press-fit centering head 25; guide surface 26;

[0033] Positioning press-fit assembly 30; press-fit positioning ring 31; third protrusion 311; second elastic member 32; third bushing 33;

[0034] Retention assembly 40; retention body 41; mounting hole 411; first matching hole 42; third elastic member 43; fourth elastic member 44; stopper 45; contact member 46;

[0035] Rotor shaft 50; rotor shaft centering hole 51; bearing 52; bearing pressure ring 53; rotor shaft shoulder 54. DETAILED DESCRIPTION

[0036] 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.

[0037] Reference below Figure 1-Figure 11 A pressure head device 100 for a rotor according to an embodiment of the present invention is described.

[0038] like Figure 1-Figure 11 As shown, the pressing head device 100 for a rotor according to an embodiment of the present utility model comprises: a press-fitting housing 10 , a centering assembly 20 , a positioning press-fitting assembly 30 , and a retention assembly 40 .

[0039] The press-fit housing 10 defines a receiving space 13; the centering assembly 20 includes: a press-fit centering shaft 21 and a first elastic member 22, the press-fit centering shaft 21 is movably arranged in the receiving space 13, the first elastic member 22 is sleeved on the press-fit centering shaft 21, and the press-fit centering shaft 21 is movably arranged in the receiving space 13, and the first elastic member 22 is sleeved on the press-fit centering shaft 21. Figure 1 The two opposite ends of the first elastic member 22 can respectively abut against the shoulders of the press-fit housing 10 and the press-fit centering shaft 21; the positioning press-fit assembly 30 includes: a press-fit positioning ring 31 and a second elastic member 32, the press-fit positioning ring 31 is movably arranged in the accommodating space 13, and the second elastic member 32 is arranged in the accommodating space 13, and along the first direction (i.e. Figure 1The two opposite ends of the second elastic member 32 can respectively abut against the press-fit housing 10 and the press-fit positioning ring 31; the retention assembly 40 includes: a retention body 41 and a plurality of third elastic members 43, the retention body 41 is arranged on the press-fit housing 10, and the plurality of third elastic members 43 are arranged in the first direction (i.e. Figure 1 The third elastic member 43 is arranged around the axis (in the X direction shown in the figure), one end of the third elastic member 43 can abut against the retention body 41, and the other end of the third elastic member 43 opposite to the retention member is suitable for retaining the member to be pressed.

[0040] The press-fit shell 10 can define a receiving space 13 , and the receiving space 13 can receive other components of the pressing head device 100 . As some embodiments of the present application, the material of the press-fit shell 10 can be aluminum alloy.

[0041] The centering assembly 20 includes a press-fit centering shaft 21 and a first elastic member 22. The press-fit centering shaft 21 is movably arranged in the accommodating space 13, that is, the press-fit centering shaft 21 is at least partially located in the accommodating space 13 and can move in the accommodating space 13. The press-fit centering shaft 21 has a shoulder. The first elastic member 22 is sleeved on the press-fit centering shaft 21 and extends in a first direction (i.e., Figure 1 The first elastic member 22 has two opposite ends, one end of the first elastic member 22 abuts against the press-fit housing 10, and the other end of the first elastic member 22 abuts against the shoulder of the press-fit centering shaft 21.

[0042] The positioning and pressing assembly 30 includes a pressing and positioning ring 31 and a second elastic member 32. The pressing and positioning ring 31 is movably arranged in the accommodating space 13. That is, the pressing and positioning ring 31 is at least partially located in the accommodating space 13 and can move in the accommodating space 13. Figure 1 The second elastic member 32 has two opposite ends, one end of the second elastic member 32 abuts against the press-fit housing 10, and the other end of the second elastic member 32 abuts against the press-fit positioning ring 31. As some embodiments of the present application, the positioning press-fit assembly 30 is sleeved on the press-fit centering shaft 21.

[0043] The retention assembly 40 includes a retention body 41 and a third elastic member 43. The retention body 41 is disposed in the press-fit shell 10. Specifically, the retention body 41 is connected to the press-fit shell 10. The connection between the retention body 41 and the press-fit shell 10 may be, but not limited to, a clamping connection, a bolt connection, etc. As some embodiments of the present invention, the retention body 41 is connected to the press-fit shell 10 by a clamping connection. Among them, the number of the third elastic members 43 is multiple, and the number of the third elastic members 43 may be, but not limited to, two, three, four, etc. As some embodiments of the present invention, the number of the third elastic members 43 is four. Along the first direction (i.e. Figure 1The third elastic member 43 is provided around the central axis of the retention body 41, and the third elastic member 43 has two opposite ends, one end of the third elastic member 43 is in contact with the retention body 41, and the other end of the third elastic member 43 is suitable for retaining the part to be pressed. As some embodiments of the present application, the other end of the third elastic member 43 can indirectly contact the part to be pressed to retain the part to be pressed. As some embodiments of the present application, the part to be pressed can be a bearing pressure ring 53. As some embodiments of the present application, the third elastic member 43 can be an elastic plunger.

[0044] As some embodiments of the present application, the pressing head device 100 can be driven by a press. When the bearing pressing ring 53 of the rotor needs to be pressed, the bearing pressing ring 53 is first installed on the retention assembly 40 to retain the bearing pressing ring 53. Specifically, the bearing pressing ring 53 can be moved along the first direction (i.e. Figure 1 The retaining assembly 40 is pushed into the retaining assembly 40 in the X direction as shown in the figure, and the third elastic member 43 indirectly contacts the side wall of the bearing pressure ring 53 to clamp the retaining bearing pressure ring 53 or to clamp the retaining bearing pressure ring 53.

[0045] Then, the press-fit centering shaft 21 is aligned with the rotor shaft 50 of the rotor. Specifically, the press head device 100 is driven by the press machine to move in a first direction (i.e. Figure 1 The press head device 100 moves in the first direction (i.e., the X direction shown in the figure) toward the rotor shaft 50 so that the press-fit centering shaft 21 contacts the centering hole of the rotor shaft 50. After the press-fit centering shaft 21 contacts the centering hole of the rotor shaft 50, the press head device 100 continues to be driven along the first direction (i.e., Figure 1 The first elastic member 22 moves in the X direction (as shown) toward the rotor shaft 50. Since both ends of the first elastic member 22 abut against the shoulders of the press-fit housing 10 and the press-fit centering shaft 21 respectively, the first elastic member 22 is compressed to press the press-fit centering shaft 21 and the rotor shaft 50 to ensure positioning accuracy.

[0046] Then, the pressing head device 100 is continuously driven along the first direction (ie Figure 1 The press moves in the X direction (as shown) toward the rotor shaft 50 (i.e., the press continues to press down) so that the lower surface of the press-fitting positioning ring 31 contacts the rotor shaft shoulder 54. Since the two ends of the second elastic member 32 respectively abut against the press-fitting housing 10 and the shoulders of the press-fitting positioning ring 31, the second elastic member 32 is compressed. At this time, the bearing pressure ring 53 can be sent into the shaft section of the rotor shaft 50 to be pressed.

[0047] Then, the pressing head device 100 is continuously driven along the first direction (ie Figure 1The press 100 is driven to move in the X direction (shown in the figure) toward the rotor shaft 50 (i.e., the press continues to press down) until the retention body 41 contacts the upper surface of the bearing 52 of the rotor shaft 50, and then the press continues to press down until the bearing ring 53 is pressed into place. After the bearing ring 53 is pressed into place, the pressing head device 100 is driven to retreat. During the retreat process, the retention body 41 is separated from the upper surface of the bearing 52 of the rotor shaft 50, the lower surface of the press-fitting positioning ring 31 is separated from the rotor shaft shoulder 54, the second elastic member 32 is gradually restored, the press-fitting centering shaft 21 is separated from the rotor shaft centering hole 51, and the first elastic member 22 is gradually restored. In this way, the bearing ring 53 can be flexibly pressed, the success rate of press-fitting is improved, and the probability of press-fitting failure is reduced. In addition, the probability of uneven force on the rotor shaft 50 and its bearing 52 can be reduced, and the probability of damage to the rotor shaft 50 and / or the bearing 52 can be reduced.

[0048] Therefore, through the pressing head device 100 of the present application, the rotor can be flexibly pressed, thereby reducing the probability of uneven force on the rotor shaft 50 and its bearing 52, and reducing the probability of damage to the rotor shaft 50 and / or bearing 52, which is beneficial to improving the success rate of pressing and improving the efficiency of rotor pressing.

[0049] In some embodiments of the present invention, Figure 7 and Figure 8 As shown, the retention assembly 40 further includes: a fourth elastic member 44, along the first direction (ie Figure 1 The opposite ends of the fourth elastic member 44 can respectively abut against the retention body 41 and the press-fit housing 10.

[0050] The retention assembly 40 further includes a fourth elastic member 44 extending in the first direction (i.e. Figure 1 The fourth elastic member 44 has two opposite ends, one end of the fourth elastic member 44 abuts against the retention body 41, and the other end of the fourth elastic member 44 abuts against the press-fit housing 10.

[0051] As some embodiments of the present application, the retention body 41 and the press-fit shell 10 both have a recessed groove, and opposite ends of the fourth elastic member 44 are disposed in the recessed grooves of the retention body 41 and the press-fit shell 10 .

[0052] As some embodiments of the present application, the pressing head device 100 can be driven by a press. When the bearing pressing ring 53 of the rotor needs to be pressed, the bearing pressing ring 53 is first installed on the retention assembly 40 to retain the bearing pressing ring 53. Specifically, the bearing pressing ring 53 can be moved along the first direction (i.e. Figure 1 The retaining assembly 40 is pushed into the retaining assembly 40 in the X direction as shown in the figure, and the third elastic member 43 indirectly contacts the side wall of the bearing pressure ring 53 to clamp the retaining bearing pressure ring 53 or to clamp the retaining bearing pressure ring 53.

[0053] Then, the press-fit centering shaft 21 is aligned with the rotor shaft 50 of the rotor. Specifically, the press head device 100 is driven by the press machine to move in a first direction (i.e. Figure 1 The press head device 100 moves in the first direction (i.e., the X direction shown in the figure) toward the rotor shaft 50 so that the press-fit centering shaft 21 contacts the centering hole of the rotor shaft 50. After the press-fit centering shaft 21 contacts the centering hole of the rotor shaft 50, the press head device 100 continues to be driven along the first direction (i.e., Figure 1 The first elastic member 22 moves in the X direction (as shown) toward the rotor shaft 50. Since both ends of the first elastic member 22 abut against the shoulders of the press-fit housing 10 and the press-fit centering shaft 21 respectively, the first elastic member 22 is compressed to press the press-fit centering shaft 21 and the rotor shaft 50 to ensure positioning accuracy.

[0054] Then, the pressing head device 100 is continuously driven along the first direction (ie Figure 1 The press moves in the X direction (as shown) toward the rotor shaft 50 (i.e., the press continues to press down) so that the lower surface of the press-fitting positioning ring 31 contacts the rotor shaft shoulder 54. Since the two ends of the second elastic member 32 respectively abut against the press-fitting housing 10 and the shoulders of the press-fitting positioning ring 31, the second elastic member 32 is compressed. At this time, the bearing pressure ring 53 can be sent into the shaft section of the rotor shaft 50 to be pressed.

[0055] Then, the pressing head device 100 is continuously driven along the first direction (ie Figure 1 The press continues to press downward until the retention body 41 contacts the upper surface of the bearing 52 on the rotor shaft 50. Then, the press continues to press downward, and the fourth elastic member 44 is compressed. Since the two ends of the fourth elastic member 44 are respectively in contact with the retention body 41 and the press-fitting shell 10, as the press moves downward, the compression amount of the fourth elastic member 44 increases until the bearing pressure ring 53 is press-fitted into place. At this time, the third elastic member 43 contacts the side of the bearing pressure ring 53.

[0056] The press can prompt the bearing press ring 53 to be pressed into place through force or displacement feedback. After the bearing press ring 53 is pressed into place, the press can drive the press head device 100 to move in the first direction (i.e. Figure 1 As the pressure head device 100 moves upward along the first direction (i.e. Figure 1 The retaining body 41 is separated from the upper surface of the bearing 52 on the rotor shaft 50, the fourth elastic member 44 is gradually restored, the third elastic member 43 is separated from the side of the bearing pressure ring 53, the third elastic member 43 is gradually restored, the lower surface of the press-fitting positioning ring 31 is separated from the rotor shaft shoulder 54, the second elastic member 32 is gradually restored, the press-fitting centering shaft 21 is separated from the rotor shaft centering hole 51, the first elastic member 22 is gradually restored, and the press-fitting is completed.

[0057] By making the retention assembly 40 also include a fourth elastic member 44, and by making the opposite ends of the fourth elastic member 44 respectively abut against the retention body 41 and the press-fitting shell 10, the flexible press-fitting effect can be further improved, the probability of uneven force on the rotor shaft 50 and its bearing 52 can be further reduced, and the probability of damage to the rotor shaft 50 and / or the bearing 52 can be further reduced, which is beneficial to improving the reliability of the use of the pressure head device 100.

[0058] In some embodiments of the present invention, Figure 3 As shown, the press-fit housing 10 has a first protrusion 14 protruding toward the accommodating space 13 , and the first elastic member 22 can abut against the first protrusion 14 .

[0059] The press-fit housing 10 has a first protrusion 14 protruding toward the accommodating space 13. As some embodiments of the present application, the press-fit housing 10 and the first protrusion 14 are constructed as an integrally formed part, and the integrally formed part has good structural strength. By integrally forming the press-fit housing 10 and the first protrusion 14, the connection reliability between the press-fit housing 10 and the first protrusion 14 can be improved, and the probability of fracture at the connection between the press-fit housing 10 and the first protrusion 14 can be reduced. The first elastic member 22 can abut against the first protrusion 14 of the press-fit housing 10.

[0060] By providing the press-fit shell 10 with a first protrusion 14 protruding toward the accommodating space 13, the first elastic member 22 can be compressed between the shoulder of the press-fit centering shaft 21 and the press-fit shell 10, so that the press-fit centering shaft 21 can be in flexible contact with the rotor shaft centering hole 51, which is beneficial to ensure positioning accuracy.

[0061] In some embodiments of the present invention, Figure 3 As shown, the press-fit housing 10 has a second protrusion 15 protruding toward the accommodating space 13 , and the second elastic member 32 can abut against the second protrusion 15 .

[0062] The press-fit housing 10 has a second protrusion 15 protruding toward the accommodating space 13. As some embodiments of the present application, the press-fit housing 10 and the second protrusion 15 are constructed as an integrally formed part, and the integrally formed part has good structural strength. By integrally forming the press-fit housing 10 and the second protrusion 15, the connection reliability between the press-fit housing 10 and the first protrusion 14 can be improved, and the probability of fracture at the connection between the press-fit housing 10 and the second protrusion 15 can be reduced. The second elastic member 32 can abut against the second protrusion 15 of the press-fit housing 10.

[0063] By providing the press-fit shell 10 with a second protrusion 15 protruding toward the accommodating space 13, the second elastic member 32 can be compressed between the press-fit positioning ring 31 and the press-fit shell 10, so that the lower surface of the press-fit positioning ring 31 can be in flexible contact with the rotor shaft shoulder 54, which is beneficial to the flexible press-fitting of the parts to be press-fitted.

[0064] As some embodiments of the present application, the second elastic member 32 is sleeved on the outside of the first elastic member 22 .

[0065] In some embodiments of the present invention, Figure 4 As shown, the centering assembly 20 also includes: a first bushing 23 and a second bushing 24 , both of which are sleeved on the press-fit centering shaft 21 , the first bushing 23 is fixedly connected to the press-fit housing 10 , and the second bushing 24 is fixedly connected to the press-fit positioning ring 31 .

[0066] The centering assembly 20 further includes a first bushing 23 and a second bushing 24. The first bushing 23 can be sleeved on the press-fit centering shaft 21. Specifically, the first bushing 23 is matched with the axial hole of the press-fit centering shaft 21. As some embodiments of the present application, the first bushing 23 is loosely matched with the press-fit centering shaft 21. The second bushing 24 can be sleeved on the press-fit centering shaft 21. Specifically, the second bushing 24 is matched with the axial hole of the press-fit centering shaft 21. As some embodiments of the present application, the second bushing 24 is loosely matched with the press-fit centering shaft 21.

[0067] The first bushing 23 is fixedly connected to the press-fit housing 10. The connection method between the first bushing 23 and the press-fit housing 10 may be, but not limited to, a clamping connection, a bolt connection, etc. As some embodiments of the present application, the first bushing 23 is connected to the press-fit housing 10 by a bolt connection. The second bushing 24 is fixedly connected to the press-fit positioning ring 31. The connection method between the second bushing 24 and the press-fit positioning ring 31 may be, but not limited to, a clamping connection, a bolt connection, etc. As some embodiments of the present application, the second bushing 24 is connected to the press-fit positioning ring 31 by a bolt connection.

[0068] By making the centering assembly 20 include the first bushing 23 and the second bushing 24, the first bushing 23 and the second bushing 24 can be used to guide the press-fit centering shaft 21 so that the press-fit centering shaft 21 is moved in a first direction (i.e. Figure 1 The X direction shown in the figure) is in precise contact with the rotor shaft centering hole 51, which is beneficial to improving the centering and positioning accuracy of the pressure head device 100.

[0069] In some embodiments of the present invention, Figure 4 As shown, the centering component 20 also includes: a press-fit centering head 25, which is arranged at one end of the press-fit centering shaft 21 relatively close to the retention component 40 and has a guide surface 26. From the end of the press-fit centering head 25 close to the press-fit centering shaft 21 to the end away from the press-fit centering shaft 21, the guide surface 26 gradually approaches the axis of the press-fit centering shaft 21.

[0070] The centering assembly 20 further includes a press-fit centering head 25, which is arranged along a first direction (i.e. Figure 1The press-fit centering shaft 21 is provided with a press-fit centering head 25 at one end thereof which is relatively close to the retention assembly 40. As some embodiments of the present application, the press-fit centering head 25 is bolted to the press-fit centering shaft 21. The press-fit centering head 25 has a guide surface 26 which is arranged along the first direction (i.e. Figure 1 The guide surface 26 gradually approaches the axis of the press-fitting centering axis 21 from one end of the guide surface 26 close to the press-fitting centering axis 21 to the other end of the guide surface 26 away from the press-fitting centering axis 21.

[0071] By making the centering assembly 20 also include a press-fit centering head 25 and making the press-fit centering head 25 have a guide surface 26, the press-fit centering head 25 can have a guiding function, which is beneficial to the precise and smooth contact between the press-fit centering shaft 21 and the rotor shaft centering hole 51, and is beneficial to improving the centering positioning accuracy of the press head device 100.

[0072] In some embodiments of the present invention, Figure 3 , Figure 5 and Figure 6 As shown, the press-fit housing 10 includes a first sub-housing 11 and a second sub-housing 12 connected to each other, and the press-fit positioning ring 31 has a third protrusion 311, which is arranged along a first direction (i.e. Figure 1 The third protrusion 311 abuts against an end of the second sub-housing 12 close to the first sub-housing 11 .

[0073] The press-fit housing 10 includes a first sub-housing 11 and a second sub-housing 12, which are connected to each other. The connection between the first sub-housing 11 and the second sub-housing 12 may be, but is not limited to, a clamping connection, a bolt connection, etc. As some embodiments of the present application, the first sub-housing 11 and the second sub-housing 12 are connected by bolt connection. The press-fit positioning ring 31 has a third protrusion 311, which is connected along the first direction (i.e. Figure 1 The third protrusion 311 abuts against an end of the second sub-housing 12 close to the first sub-housing 11 .

[0074] By making the press-fit shell 10 include a first sub-shell 11 and a second sub-shell 12 that are connected, the press-fit shell 10 can be easily produced and manufactured, and the difficulty of assembling the press-fit shell 10 is reduced. In addition, the difficulty of assembling the pressing head device 100 can be reduced. By making the press-fit positioning ring 31 have a third protrusion 311, and making the third protrusion 311 abut against one end of the second sub-shell 12 close to the first sub-shell 11, the probability of the press-fit positioning ring 31 being separated from the accommodating space 13 can be reduced, which is beneficial to improving the reliability of the press-fitting device 100.

[0075] In some embodiments of the present invention, Figure 3 , Figure 5 and Figure 6As shown, the positioning and pressing assembly 30 further includes: a third bushing 33, the third bushing 33 is located between the pressing and positioning ring 31 and the second sub-shell 12, the second sub-shell 12 has a fourth protrusion 121 protruding toward the accommodating space 13, and along the first direction (i.e. Figure 1 The third bushing 33 is disposed between the third protrusion 311 and the fourth protrusion 121 (in the X direction shown).

[0076] The third bushing 33 is located between the press-fitting positioning ring 31 and the second sub-housing 12 , that is, the third bushing 33 is sleeved on the second sub-housing 12 , and the press-fitting positioning ring 31 is sleeved on the third bushing 33 .

[0077] As some embodiments of the present application, the third bushing 33 is slidably matched with the second sub-housing 12, and the press-fitted positioning ring 31 is slidably matched with the third bushing 33. As some embodiments of the present application, the third bushing 33 is slidably matched with the second sub-housing 12, and the press-fitted positioning ring 31 is slidably matched with the third bushing 33.

[0078] The second sub-housing 12 has a fourth protrusion 121 protruding toward the accommodation space 13, along the first direction (i.e. Figure 1 The third bushing 33 is disposed between the third protrusion 311 and the fourth protrusion 121 (in the X direction shown).

[0079] By making the positioning and pressing assembly 30 also include the third bushing 33, the positioning and pressing assembly 30 can be designed reasonably, the movement of the pressing positioning ring 31 can be smooth, the movement direction of the pressing positioning ring 31 can be accurate, and by arranging the third bushing 33 between the third protrusion 311 and the fourth protrusion 121, the probability of the third bushing 33 coming out can be reduced, which is beneficial to improving the reliability of the use of the pressing head device 100.

[0080] In some embodiments of the present invention, Figure 3 and Figure 8 As shown, the retention body 41 has a plurality of first matching holes 42, and the press-fit housing 10 has a plurality of second matching holes 16, and the plurality of second matching holes 16 correspond to the plurality of first matching holes 42 one by one and are all along the first direction (ie Figure 1 The retention assembly 40 further includes: a plurality of limit members 45, each of which is passed through the corresponding first matching holes 42 and is fixedly connected to the retention body 41, and a partial structure of each limit member 45 is located in the corresponding second matching hole 16.

[0081] The retention body 41 has a first matching hole 42, and the number of the first matching holes 42 can be multiple, and the number of the first matching holes 42 can be but not limited to two, three, four, etc. As some embodiments of the present application, the number of the first matching holes 42 is four. The press-fit housing 10 has a second matching hole 16, and the number of the second matching holes 16 can be multiple, and the number of the second matching holes 16 can be but not limited to two, three, four, etc. As some embodiments of the present application, the number of the second matching holes 16 is four. The multiple second matching holes 16 correspond to the multiple first matching holes 42 one by one, and the multiple second matching holes 16 are all along the first direction (i.e. Figure 1 The X direction shown extends.

[0082] The retention assembly 40 further includes a stopper 45, and the number of the stopper 45 may be multiple, and the number of the stopper 45 may be but is not limited to two, three, four, etc. As some embodiments of the present application, the number of the stopper 45 is four. The multiple stoppers 45 are all inserted into the corresponding first matching holes 42, and the multiple stoppers 45 are fixedly connected to the retention body 41. Part of the structure of each stopper 45 is located in the corresponding second matching hole 16, so that the retention body 41 can move along the first direction (i.e. Figure 1 The second mating hole 16 is slidably connected to the press-fit housing 10 along the first direction (i.e., the X direction shown in FIG. 1 ). Figure 1 The length dimension (in the X direction shown) is the stroke of the retention body 41.

[0083] By providing the retention body 41 with a plurality of first matching holes 42, the press-fit housing 10 with a plurality of second matching holes 16, and allowing the stopper 45 to penetrate the first matching holes 42, and part of the structure of the stopper 45 is located in the second matching holes 16, the retention body 41 can be moved in the first direction (i.e. Figure 1 The retaining body 41 is slidably connected to the press-fitting shell 10 (in the X direction shown in the figure), and can limit the rotation of the retention body 41, thereby reducing the probability of relative rotation between the retention body 41 and the press-fitting shell 10 when the press drives the pressing head device 100. In addition, the stroke of the retention body 41 can be limited so that the retention body 41 moves within a preset stroke, which is beneficial to improving the reliability of the pressing head device 100.

[0084] In some embodiments of the present invention, Figure 8 As shown, the retention assembly 40 also includes: a plurality of contact members 46, the plurality of contact members 46 correspond one-to-one to a plurality of third elastic members 43, the contact members 46 have a spherical surface, and the third elastic member 43 is used to apply a force to the contact members 46 so that the spherical surfaces of the plurality of contact members 46 contact with the parts to be pressed, so as to retain the parts to be pressed.

[0085] The retention component 40 further includes a contact member 46. The number of the contact members 46 may be multiple, and the number of the contact members 46 may be, but is not limited to, two, three, four, etc. As some embodiments of the present application, the number of the contact members 46 is four. The contact member 46 has a spherical surface. The number of the contact members 46 is the same as the number of the third elastic members 43. The multiple contact members 46 are arranged in a one-to-one correspondence with the multiple third elastic members 43. Specifically, the third elastic member 43 has two opposite ends, one end of the third elastic member 43 abuts against the retention body 41, and the other end of the third elastic member 43 abuts against the contact member 46. The third elastic member 43 is used to apply a force to the contact member 46 so that the spherical surfaces of the multiple contact members 46 contact and clamp the parts to be pressed to retain the parts to be pressed, or, along the first direction (i.e. Figure 1 The spherical surface of the contact member 46 can limit the part to be pressed to retain the part to be pressed.

[0086] It should be noted that the spherical surface of the contact member 46 can be used to contact the pressed part along the first direction (i.e. Figure 1 In the embodiment where the contact member 46 is limited in the X direction (shown in the figure) to retain the part to be pressed, the lower wall surface of the part to be pressed will abut against the contact member 46 and be retained. In addition, during the pressing process, the part to be pressed will gradually move in a direction away from the retention body 41. Since the contact member 46 has a spherical surface, the probability of the part to be pressed getting stuck can be reduced.

[0087] By making the retention component 40 also include multiple contact members 46, and making the spherical surfaces of the multiple contact members 46 contact with the parts to be pressed to retain the parts to be pressed, the design of the pressing head device 100 can be reasonable, the probability of the parts to be pressed getting stuck can be reduced, and the reliability of the pressing head device 100 can be improved.

[0088] In some embodiments of the present invention, Figure 8 As shown, the retention body 41 has a plurality of mounting holes 411 , the plurality of third elastic members 43 are respectively disposed in the plurality of mounting holes 411 , and partial structures of the plurality of contact members 46 are respectively disposed in the plurality of mounting holes 411 .

[0089] The retention body 41 has a mounting hole 411, and the number of the mounting holes 411 can be multiple, and the number of the mounting holes 411 can be but not limited to two, three, four, etc. As some embodiments of the present application, the number of the mounting holes 411 is four. The multiple mounting holes 411, the multiple third elastic members 43, and the multiple contact members 46 correspond to each other one by one, and the multiple third elastic members 43 are respectively arranged in the multiple mounting holes 411, and the partial structures of the multiple contact members 46 are respectively arranged in the multiple mounting holes 411.

[0090] By providing the retention body 41 with a plurality of mounting holes 411 and respectively disposing a plurality of third elastic members 43 in the plurality of mounting holes 411, the compression direction and the extension direction of the third elastic member 43 can be precise. By disposing partial structures of a plurality of contact members 46 in the plurality of mounting holes 411, respectively, the probability of the contact members 46 falling off can be reduced.

[0091] In the description of the present invention, it should be understood 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 orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0092] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0093] In the description of the present invention, "plurality" means two or more.

[0094] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0095] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0096] 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.

[0097] 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 pressure head device for a rotor, characterized in that: include: A press-fit housing, wherein the press-fit housing defines a receiving space; A centering assembly, the centering assembly comprising: a press-fit centering shaft and a first elastic member, the press-fit centering shaft is movably arranged in the accommodation space, the first elastic member is sleeved on the press-fit centering shaft, and along a first direction, opposite ends of the first elastic member can respectively abut against the press-fit housing and the shaft shoulders of the press-fit centering shaft; A positioning press-fit assembly, the positioning press-fit assembly comprising: a press-fit positioning ring and a second elastic member, the press-fit positioning ring is movably arranged in the accommodation space, the second elastic member is arranged in the accommodation space, and along the first direction, opposite ends of the second elastic member can respectively abut against the press-fit housing and the press-fit positioning ring; A retention component, the retention component includes: a retention body and a plurality of third elastic members, the retention body is arranged on the press-fitting shell, the plurality of third elastic members are arranged around the first direction as the axis, one end of the third elastic member can abut against the retention body, and the other end of the third elastic member is suitable for retaining the part to be pressed.

2. The pressure head device for a rotor according to claim 1, characterized in that: The retention assembly further includes: a fourth elastic member, and along the first direction, opposite ends of the fourth elastic member can respectively abut against the retention body and the press-fit shell.

3. The pressure head device for a rotor according to claim 1, characterized in that: The press-fit housing has a first protrusion protruding toward the accommodating space, and the first elastic member can abut against the first protrusion.

4. The pressure head device for a rotor according to claim 1, characterized in that: The press-fit housing has a second protrusion protruding toward the accommodating space, and the second elastic member can abut against the second protrusion.

5. The pressure head device for a rotor according to claim 1, characterized in that: The centering assembly further includes: a first bushing and a second bushing, wherein the first bushing and the second bushing are both sleeved on the press-fit centering shaft, the first bushing is fixedly connected to the press-fit housing, and the second bushing is fixedly connected to the press-fit positioning ring.

6. The pressure head device for a rotor according to claim 1, characterized in that: The centering component also includes: a press-fit centering head, which is arranged at one end of the press-fit centering shaft relatively close to the retention component and has a guide surface, and the guide surface gradually approaches the axis of the press-fit centering shaft from the end of the press-fit centering head close to the press-fit centering shaft to the end away from the press-fit centering shaft.

7. The pressure head device for a rotor according to claim 1, characterized in that: The press-fit housing comprises a first sub-housing and a second sub-housing that are connected. The press-fit positioning ring has a third protrusion. Along the first direction, the third protrusion abuts against an end of the second sub-housing close to the first sub-housing.

8. The pressure head device for a rotor according to claim 7, characterized in that: The positioning and pressing assembly also includes: a third bushing, which is located between the pressing positioning ring and the second sub-shell, the second sub-shell has a fourth protrusion protruding toward the accommodating space, and along the first direction, the third bushing is arranged between the third protrusion and the fourth protrusion.

9. The pressure head device for a rotor according to claim 2, characterized in that: The retention body has a plurality of first matching holes, the press-fit shell has a plurality of second matching holes, the plurality of second matching holes correspond one-to-one to the plurality of first matching holes and all extend along the first direction, the retention assembly also includes: a plurality of limit members, the plurality of limit members are all passed through the corresponding first matching holes and fixedly connected to the retention body, and a partial structure of each of the limit members is located in the corresponding second matching hole.

10. The pressure head device for a rotor according to claim 1, characterized in that: The retention component also includes: multiple contact pieces, each of which corresponds to the multiple third elastic pieces one by one, and the contact piece has a spherical surface. The third elastic piece is used to apply a force to the contact piece so that the spherical surfaces of the multiple contact pieces contact the piece to be pressed, so as to retain the piece to be pressed.

11. The pressure head device for a rotor according to claim 10, characterized in that: The retention body has a plurality of mounting holes, the plurality of third elastic members are respectively disposed in the plurality of mounting holes, and partial structures of the plurality of contact members are respectively disposed in the plurality of mounting holes.

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