Vacuum stepping motor coil framework and vacuum stepping motor

Abstract

The utility model discloses a vacuum stepping motor coil framework and a vacuum stepping motor. The vacuum stepping motor coil framework comprises a stator iron core, an upper coil framework, a lower coil framework and a core penetrating screw assembly. The upper coil framework comprises an upper framework table pressed on the stator iron core, first inner frameworks which are arranged at the bottom of the upper framework table and are extruded and sleeved in the inner framework grooves in a one-to-one correspondence manner, first winding grooves formed in the first inner frameworks, and first inner connecting ring sheets which are arranged between the adjacent first inner frameworks and are extruded on the stator iron core; the upper framework platform is provided with a core penetrating screw mounting hole, the upper sleeve is arranged on the lower portion of the upper framework platform and arranged in the core penetrating screw mounting hole in a sleeved mode, the first penetrating hole penetrates through the upper sleeve and the upper framework platform, the upper limiting polygonal ring is arranged on the upper framework platform, and the first wire outlet groove is formed in the upper limiting polygonal ring. Through the scheme, the vacuum stepping motor has the advantages of simple structure, reliable connection and the like, and has very high practical value and popularization value in the technical field of vacuum stepping motors.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum stepping motors, in particular to a vacuum stepping motor coil frame and a vacuum stepping motor. Background Art

[0002] The stepper motor is an open-loop control motor used in a vacuum environment to convert electrical pulse signals into angular displacement or linear displacement. It is the main actuator in modern digital program control systems. Among them, the stepper motor is composed of a rotor, a stator and a coil. From the perspective of its structure, it can be divided into reactive stepper motors, permanent magnet stepper motors, hybrid stepper motors, single-phase stepper motors, planar stepper motors and other types. The vacuum stepper motor has the characteristics of vacuum resistance, high temperature resistance and low outgassing.

[0003] The stator core is an important part of the motor magnetic circuit, which together with the rotor core, the air gap between the stator and the rotor constitutes the complete magnetic circuit of the motor. Among them, the coil skeleton is the supporting and protective component of the stator core, and the core coil is wound on the coil skeleton. At present, the stator core in the prior art is obtained by stacking the annular core laminations, such as the Chinese invention patent "Patent Publication No. CN110224523A, named a stator for high and low temperature vacuum stepping motor and its winding method", which has the following problems:

[0004] First, the core laminations need to be clamped and fixed after being stacked. If the clamping assembly is in direct contact with the core laminations, eddy current losses will be generated in the core.

[0005] Second, the lamination connection of the core in the prior art is unreliable and cannot take into account the requirements of insulation connection and miniaturization.

[0006] Therefore, it is urgent to propose a vacuum stepping motor coil frame and a vacuum stepping motor with simple structure and reliable connection. Utility Model Content

[0007] In view of the above problems, the purpose of the utility model is to provide a vacuum stepping motor coil skeleton and a vacuum stepping motor. The technical solution adopted by the utility model is as follows:

[0008] A vacuum stepping motor coil frame, comprising a stator core, an upper coil frame sleeved on the upper part of the stator core, a lower coil frame sleeved on the upper part of the stator core, and a core-penetrating screw assembly sleeved on the upper coil frame and the lower coil frame and clamping and fixing the stator core;

[0009] The stator core comprises a plurality of core laminations, inner frame slots and core screw mounting holes provided on the core laminations along the longitudinal direction, and coil slots provided on the inner side of the core laminations and communicating with the inner frame slots;

[0010] The upper coil frame includes an upper frame platform pressed on the stator core, a first inner frame arranged at the bottom of the upper frame platform and extruded and sleeved in the inner frame groove in a one-to-one correspondence, a first winding groove opened in the first inner frame, a first inner connecting ring sheet arranged between adjacent first inner frames and extruded on the stator core, an upper sleeve arranged at the lower part of the upper frame platform and sleeved in the installation hole of the through-core screw, a first through hole penetrating the upper sleeve and the upper frame platform, an upper limit polygonal ring arranged on the upper frame platform, and a first outlet groove opened on the upper limit polygonal ring;

[0011] The lower coil frame includes a lower frame platform pressed on the stator core, a second inner frame arranged on the upper part of the lower frame platform and extruded and sleeved in the inner frame groove in a one-to-one correspondence, a lower sleeve arranged on the upper part of the lower frame platform and sleeved in the mounting hole of the through-core screw, a second through hole penetrating the lower sleeve and the lower frame platform, a second winding groove opened in the second inner frame, a lower limit polygonal ring arranged at the bottom of the lower frame platform, a second wire outlet groove opened on the lower limit polygonal ring, and a second inner connecting ring piece connected between adjacent second inner frames and extruded on the stator core; the upper sleeve is sleeved and connected with the lower sleeve; the through-core screw assembly is placed in the first through hole and the second through hole.

[0012] Furthermore, the upper frame platform and the lower frame platform are flush with the outer edges of the core laminations.

[0013] Furthermore, the through-core screw assembly includes a through-core screw sleeved in a first through hole and a second through hole, an upper connecting nut arranged at one end of the through-core screw, and a lower connecting nut arranged at the other end of the through-core screw; the upper connecting nut is extruded on an upper frame platform; and the lower connecting nut is extruded on a lower frame platform.

[0014] Furthermore, the upper coil frame and the lower coil frame are made of polyetheretherketone material.

[0015] Furthermore, a connecting inner hole is provided at the bottom of the upper sleeve, and a connecting sleeve is provided on the lower sleeve; the connecting sleeve is placed in the connecting inner hole.

[0016] Furthermore, a plurality of first coil isolation columns are arranged on the inner side of the upper limit polygonal ring, and a plurality of second coil isolation columns are arranged on the inner side of the lower limit polygonal ring. The first coil isolation columns are placed in the first winding groove, and the second coil isolation columns are placed in the second winding groove.

[0017] A vacuum stepping motor is provided with a vacuum stepping motor coil frame.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] (1) The utility model provides an upper frame platform, a first inner frame, an upper sleeve, a lower frame platform, a second inner frame and a lower sleeve. With the cooperation of a through-core screw assembly, the utility model can not only wrap and support multiple stator cores, but also insulate and isolate the stacked connections of the stator cores. At the same time, it can also serve as a half-frame connection, achieving three effects at one stroke.

[0020] (2) The utility model provides a through-screw installation hole, a through-screw assembly, a connecting inner hole and a connecting sleeve, so that the insulation connection is reliable, effectively avoiding direct contact between the through-screw and the stator core laminations, and fixing the frame, thereby reducing the volume occupied by the frame fixing connection.

[0021] (3) The utility model provides an upper limit polygonal ring and a lower limit polygonal ring to facilitate reliable extrusion connection between the stator core, the coil frame, and the stator coil and the housing of the air-operated stepper motor after installation, thereby ensuring their fixing reliability.

[0022] (4) The utility model provides a first coil isolation column and a second coil isolation column, and separates the incoming wires of adjacent stator coils to ensure the winding reliability.

[0023] (5) The utility model provides an upper frame platform and a lower frame platform, which are flush with the edges of the stator core laminations to achieve end protection of the stator core.

[0024] In summary, the utility model has the advantages of simple structure, reliable connection, etc., and has high practical value and promotion value in the field of vacuum stepping motor technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope of protection. For those skilled in the art, other relevant drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a structural schematic diagram of the utility model.

[0027] Figure 2 It is a structural schematic diagram of the stator core of the utility model.

[0028] Figure 3 It is a structural schematic diagram of the upper coil skeleton of the utility model at a first angle.

[0029] Figure 4 It is a structural schematic diagram of the second angle of the upper coil skeleton of the utility model.

[0030] Figure 5It is a structural schematic diagram of the lower coil skeleton of the utility model.

[0031] Figure 6 It is a partial cross-sectional schematic diagram of the utility model.

[0032] In the above drawings, the component names corresponding to the reference numerals are as follows:

[0033] 1. stator core; 2. upper coil frame; 3. lower coil frame; 4. through-core screw; 5. upper connecting nut; 6. lower connecting nut; 11. core lamination; 12. inner frame groove; 13. through-core screw mounting hole; 14. coil notch; 21. upper frame platform; 22. first inner frame; 23. upper sleeve; 24. first through hole; 25. first inner connecting ring piece; 26. upper limit polygonal ring; 27. first coil isolation column; 28. first outlet groove; 221. first winding groove; 231. connecting inner hole; 31. lower frame platform; 32. second inner frame; 33. lower sleeve; 34. second through hole; 35. lower limit polygonal ring; 36. second inner connecting ring piece; 37. second coil isolation column; 38. second outlet groove; 331. connecting sleeve. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of this application clearer, the utility model is further described below in conjunction with the accompanying drawings and embodiments, and the implementation methods of this utility model include but are not limited to the following embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0035] In this embodiment, the term "and / or" is merely a term used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist at the same time, and B exists alone.

[0036] The terms "first" and "second" in the description and claims of this embodiment are used to distinguish different objects rather than to describe a specific order of objects. For example, a first target object and a second target object are used to distinguish different target objects rather than to describe a specific order of target objects.

[0037] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0038] In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" refers to two or more than two. For example, multiple processing units refer to two or more processing units; multiple systems refer to two or more systems.

[0039] like Figures 1 to 6 As shown, this embodiment provides a vacuum stepping motor, which is provided with a vacuum stepping motor coil frame, and the vacuum stepping motor coil frame includes a stator core 1, an upper coil frame 2 sleeved on the upper part of the stator core 1, a lower coil frame 3 sleeved on the upper part of the stator core 1, and a core-penetrating screw assembly sleeved on the upper coil frame 2 and the lower coil frame 3 and clamping and fixing the stator core 1. Among them, the upper coil frame 2 and the lower coil frame 3 are made of polyetheretherketone material.

[0040] The stator core 1 includes a plurality of core laminations 11, inner frame slots 12 and core screw mounting holes 13 provided on the core laminations 11 along the longitudinal direction, and coil slots 14 provided on the inner side of the core laminations 11 and communicating with the inner frame slots 12. A coil frame is installed in the inner frame slots 12, and the stator coil is wound on the coil frame.

[0041] In this embodiment, the coil frame is divided into an upper coil frame 2 and a lower coil frame 3 which are arranged in half, and are connected and fixed by a through-core screw assembly. The through-core screw assembly includes a through-core screw 4 sleeved in the first through hole 24 and the second through hole 34, an upper connecting nut 5 arranged at one end of the through-core screw 4, and a lower connecting nut 6 arranged at the other end of the through-core screw 4. The upper connecting nut 5 is pressed on the upper frame platform 21, and the lower connecting nut 6 is pressed on the lower frame platform 31.

[0042] In this embodiment, the upper coil frame 2 includes an upper frame platform 21 pressed on the stator core 1, a first inner frame 22 arranged at the bottom of the upper frame platform 21 and pressed and sleeved in the inner frame groove 12 in a one-to-one correspondence, a first winding groove 221 opened in the first inner frame 22, a first inner connecting ring piece 25 arranged between adjacent first inner frames 22 and pressed on the stator core 1, an upper sleeve 23 arranged at the lower part of the upper frame platform 21 and sleeved in the through-core screw installation hole 13, a first through hole 24 penetrating the upper sleeve 23 and the upper frame platform 21, an upper limit polygonal ring 26 arranged on the upper frame platform 21, a first outlet groove 28 opened on the upper limit polygonal ring 26, and a plurality of first coil isolation columns 27 arranged on the inner side of the upper limit polygonal ring 26. The first coil isolation column 27 is placed in the first winding groove 221.

[0043] In addition, the lower coil frame 3 of the present embodiment includes a lower frame platform 31 pressed on the stator core 1, a second inner frame 32 arranged on the upper part of the lower frame platform 31 and pressed and sleeved in the inner frame groove 12 in a one-to-one correspondence, a lower sleeve 33 arranged on the upper part of the lower frame platform 31 and sleeved in the through-core screw mounting hole 13, a second through hole 34 penetrating the lower sleeve 33 and the lower frame platform 31, a second winding groove provided in the second inner frame 32, a lower limit polygonal ring 35 provided at the bottom of the lower frame platform 31, a second outlet groove 38 provided on the lower limit polygonal ring 35, a second inner connecting ring piece 36 connected between adjacent second inner frames 32 and pressed on the stator core 1, and a plurality of second coil isolation columns 37 arranged on the inner side of the lower limit polygonal ring 35. Among them, the second coil isolation column 37 is placed in the second winding groove.

[0044] In this embodiment, the upper frame platform 21 and the lower frame platform 31 are flush with the outer edges of the core laminations 11 to protect the ends of the core laminations 11 and to provide reliable support for the upper coil frame 2 and the lower coil frame 3 .

[0045] In this embodiment, the upper sleeve 23 and the lower sleeve 33 are sleeved and connected, and the through-core screw 4 is placed in the first through hole 24 and the second through hole 34. Among them, a connecting inner hole 231 is opened at the bottom of the upper sleeve 23, and a connecting sleeve 331 is provided on the lower sleeve 33, and the connecting sleeve 331 is placed in the connecting inner hole 231. When the upper connecting nut 5 squeezes the upper frame platform 21 and the lower connecting nut 6 squeezes the lower frame platform 31, the connecting sleeve 331 is inserted into the connecting inner hole 231 to achieve isolation and protection of the through-core screw 4 and the stator core 1.

[0046] The above embodiments are only preferred embodiments of the present utility model and are not intended to limit the protection scope of the present utility model. Any changes that adopt the design principles of the present utility model and are made through non-creative labor on this basis should fall within the protection scope of the present utility model.

Claims

1. A vacuum stepping motor coil skeleton, characterized in that: The invention comprises a stator core (1), an upper coil frame (2) sleeved on the upper part of the stator core (1), a lower coil frame (3) sleeved on the upper part of the stator core (1), and a core-penetrating screw assembly sleeved on the upper coil frame (2) and the lower coil frame (3) and clamping and fixing the stator core (1); The stator core (1) comprises a plurality of core laminations (11), inner frame slots (12) and core screw mounting holes (13) provided on the core laminations (11) along the longitudinal direction, and coil slots (14) provided on the inner side of the core laminations (11) and communicating with the inner frame slots (12); The upper coil frame (2) comprises an upper frame platform (21) pressed on the stator core (1), a first inner frame (22) arranged at the bottom of the upper frame platform (21) and pressed and sleeved in the inner frame groove (12) in a one-to-one correspondence, a first winding groove (221) opened in the first inner frame (22), a first inner connecting ring sheet (25) arranged between adjacent first inner frames (22) and pressed on the stator core (1), an upper sleeve (23) arranged at the bottom of the upper frame platform (21) and sleeved in the through-core screw mounting hole (13), a first through hole (24) penetrating the upper sleeve (23) and the upper frame platform (21), an upper limit polygonal ring (26) arranged on the upper frame platform (21), and a first wire outlet groove (28) opened on the upper limit polygonal ring (26); The lower coil frame (3) comprises a lower frame platform (31) pressed on the stator core (1), a second inner frame (32) arranged on the upper part of the lower frame platform (31) and extruded and sleeved in the inner frame groove (12) in a one-to-one correspondence, a lower sleeve (33) arranged on the upper part of the lower frame platform (31) and sleeved in the through-core screw mounting hole (13), a second through hole (34) penetrating the lower sleeve (33) and the lower frame platform (31), and a second through hole (34) provided in the second inner frame (3 2), a second winding groove in the lower frame (31), a lower limit polygonal ring (35) arranged at the bottom of the lower frame platform (31), a second wire outlet groove (38) opened on the lower limit polygonal ring (35), and a second inner connecting ring piece (36) connected between adjacent second inner frames (32) and pressed on the stator core (1); the upper sleeve (23) and the lower sleeve (33) are sleeved and connected; the through-core screw assembly is placed in the first through hole (24) and the second through hole (34).

2. A vacuum stepping motor coil skeleton according to claim 1, characterized in that: The upper frame platform (21) and the lower frame platform (31) are flush with the outer edges of the core laminations (11).

3. A vacuum stepping motor coil skeleton according to claim 1 or 2, characterized in that: The through-core screw assembly comprises a through-core screw (4) sleeved in a first through hole (24) and a second through hole (34), an upper connecting nut (5) arranged at one end of the through-core screw (4), and a lower connecting nut (6) arranged at the other end of the through-core screw (4); the upper connecting nut (5) is pressed onto an upper frame platform (21); and the lower connecting nut (6) is pressed onto a lower frame platform (31).

4. A vacuum stepping motor coil skeleton according to claim 1 or 2, characterized in that: The upper coil frame (2) and the lower coil frame (3) are made of polyetheretherketone material.

5. A vacuum stepping motor coil skeleton according to claim 1 or 2, characterized in that: The bottom of the upper sleeve (23) is provided with a connecting inner hole (231), and the lower sleeve (33) is provided with a connecting sleeve (331); the connecting sleeve (331) is placed in the connecting inner hole (231).

6. A vacuum stepping motor coil skeleton according to claim 1 or 2, characterized in that: A plurality of first coil isolation columns (27) are arranged on the inner side of the upper limit polygonal ring (26), and a plurality of second coil isolation columns (37) are arranged on the inner side of the lower limit polygonal ring (35). The first coil isolation columns (27) are placed in the first winding groove (221), and the second coil isolation columns (37) are placed in the second winding groove.

7. A vacuum stepping motor, characterized in that: A vacuum stepping motor coil skeleton as claimed in any one of claims 1 to 6 is provided.

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