Two-section type unequal-diameter brushless rotary transformer

Abstract

The utility model provides a two-section unequal-diameter brushless rotary transformer, which comprises a stator assembly and a rotor assembly, the stator assembly comprises a casing, an annular transformer stator and a rotary transformer stator, the casing comprises a left section and a right section, the outer diameter of the left section is smaller than that of the right section, the annular transformer stator is arranged in the left section, and the rotary transformer stator is arranged in the right section. The rotary transformer stator is arranged in the right section; the rotor assembly comprises a rotating shaft, an annular transformer rotor and a rotary transformer rotor, the rotating shaft is sleeved with the annular transformer rotor and the rotary transformer rotor, the annular transformer rotor is arranged in the annular transformer stator, and the rotary transformer rotor is arranged in the rotary transformer stator; the annular transformer rotor and the rotary transformer rotor are connected through a wire. The brushless rotary transformer adopts a two-section type unequal-diameter brushless rotary transformer, so that the functionality and the manufacturability of an annular transformer and a rotary transformer are realized, the structural space is reasonably distributed, the requirement of butt joint with a small-outer-diameter mechanical interface is met, and meanwhile, the size and the weight are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to brushless signal motor technical field, especially in two -segment formula unequal diameter brushless resolver. BACKGROUND

[0002] The signal motor of continuous rotation needs to transmit the rotor signal to the stator to avoid the lead winding. The annular transformer and resolver in the current common brushless resolver are arranged axially and put into the cylindrical shell, and the outer circle sizes of the stator and rotor of the annular transformer and resolver are consistent.

[0003] With the integration of the motor assembly of the brushless resolver and other functional structural parts and the demand of system miniaturization, the further reduction of the outer diameter of the mechanical interface docking of the brushless resolver is needed, and the conventional brushless resolver structure design needs to be optimized to reduce the volume and weight. UTILITY MODEL CONTENT

[0004] The utility model discloses a two -segment formula unequal diameter brushless resolver, and the brushless resolver meets the demand of small outer diameter mechanical interface docking, and the volume and weight of the brushless resolver are reduced.

[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A two -segment formula unequal diameter brushless resolver, including stator assembly and rotor assembly, wherein, the stator assembly includes the casing, annular transformer stator and resolver stator, the casing includes left segment and right segment, the outer diameter of left segment is less than the outer diameter of right segment, the annular transformer stator is arranged in left segment, and the resolver stator is arranged in right segment;The rotor assembly includes the rotating shaft, annular transformer rotor and resolver rotor, the annular transformer rotor and resolver rotor are all set up on the rotating shaft, the annular transformer rotor is arranged in the annular transformer stator, and the resolver rotor is arranged in the resolver stator;The annular transformer rotor and resolver rotor are connected through the wire.

[0007] Further, in the above-mentioned two -segment formula unequal diameter brushless resolver, the casing further includes the middle segment, and the left segment and the right segment are connected through the middle segment.

[0008] Further, in the above-mentioned two -segment formula unequal diameter brushless resolver, the outer diameter of left segment is 20mm~26mm, the outer diameter of right segment is 23mm~29mm,

[0009] Further, in the two-section unequal-diameter brushless rotary transformer, the middle section is a circular truncated cone, the small end of the middle section is connected with the left section, and the large end of the middle section is connected with the right section.

[0010] Further, in the two-section unequal-diameter brushless rotary transformer, the angle α between the inner wall of the middle section and the axis of the middle section is 30-60° in the cross section along the axis of the middle section.

[0011] Further, in the two-section unequal-diameter brushless rotary transformer, the rotating shaft is a stepped shaft, and the annular transformer rotor and the rotary transformer rotor are axially positioned by the stepped shaft.

[0012] Further, in the two-section unequal-diameter brushless rotary transformer, the axis of the annular transformer stator, the axis of the annular transformer rotor and the axis of the rotating shaft are coaxial.

[0013] Further, in the two-section unequal-diameter brushless rotary transformer, the axis of the rotary transformer stator, the axis of the rotary transformer rotor and the axis of the rotating shaft are coaxial.

[0014] Further, in the two-section unequal-diameter brushless rotary transformer, the middle section is provided with a wire outlet hole, and the lead-out wires of the annular transformer stator and the lead-out wires of the rotary transformer stator are led out of the shell through the wire outlet hole.

[0015] Further, in the two-section unequal-diameter brushless rotary transformer, the brushless rotary transformer rotates by 360°, and the rotation speed of the brushless rotary transformer is ≤20000 rpm.

[0016] It can be seen that the two-section unequal-diameter brushless rotary transformer disclosed by the utility model realizes the functionality and processability of the annular transformer and the rotary transformer, reasonably allocates the structural space of the annular transformer and the rotary transformer, meets the requirement of docking with a small-diameter mechanical interface, and reduces the volume and weight of the brushless rotary transformer. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings accompanying the specification of this application form a part hereof, serve to provide further understanding of the utility model, and together with the illustrative embodiments of the utility model and their description, explain the utility model, and do not constitute an improper limitation on the utility model. Among them:

[0018] Figure 1 It is a structural schematic view of an embodiment of the utility model.

[0019] Figure 2 It is Figure 1A right view structural schematic diagram of the two-section unequal diameter brushless rotary transformer.

[0020] Figure 3 A structural schematic diagram of a shell of an embodiment of the utility model.

[0021] Mark explanation: 1 shell, 2 annular transformer stator, 3 rotary transformer stator, 4 rotating shaft, 5 annular transformer rotor, 6 rotary transformer rotor, 7 wire, 8 left section, 9 middle section, 10 right section, 11 lead-out wire. DETAILED DESCRIPTION

[0022] The utility model will be described below in detail with reference to the drawings and in conjunction with embodiments. Each example is provided by way of explanation of the utility model and not to limit the utility model. In fact, those skilled in the art will clearly understand that modifications and variations can be made in the utility model without departing from the scope or spirit of the utility model. For example, features shown as or described as part of one embodiment can be used in another embodiment to produce yet another embodiment. Therefore, it is expected that the utility model includes such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0023] In the description of the utility model, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and does not require the utility model to be necessarily constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. The terms "connected", "connected", "provided" used in the utility model should be understood broadly, for example, it can be fixed connection, can also be detachable connection, can be directly connected, can also be indirectly connected through intermediate parts, can be wired electrical connection, wireless electrical connection, or wireless communication signal connection, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0024] One or more examples of the utility model are shown in the accompanying drawings. The detailed description uses numerical and letter marks to refer to features in the drawings. Similar or like marks in the drawings and description have been used to refer to similar or like parts of the utility model. As used herein, the words "first", "second", and "third", and the like, are used interchangeably to distinguish one element from another, and are not intended to denote a position or importance of the individual elements.

[0025] As Figures 1 to 3 shown, according to the embodiment of the utility model, a two-section unequal diameter brushless rotary transformer is provided, as Figure 1 and Figure 2As shown, the brushless rotary transformer comprises a stator assembly and a rotor assembly, wherein the stator assembly comprises a casing 1, an annular transformer stator 2 and a rotary transformer stator 3, the casing 1 comprises a left segment 8 and a right segment 10, the outer diameter of the left segment 8 is smaller than that of the right segment 10, the annular transformer stator 2 is arranged in the left segment 8, and the rotary transformer stator 3 is arranged in the right segment 10; the rotor assembly comprises a rotating shaft 4, an annular transformer rotor 5 and a rotary transformer rotor 6, the annular transformer rotor 5 and the rotary transformer rotor 6 are sleeved on the rotating shaft 4, the annular transformer rotor 5 is arranged in the annular transformer stator 2, and the rotary transformer rotor 6 is arranged in the rotary transformer stator 3; the annular transformer rotor 5 and the rotary transformer rotor 6 are connected through a lead wire 7.

[0026] Further, as shown in the figure, Figure 3 the casing 1 further comprises a middle segment 9, and the left segment 8 and the right segment 10 are connected through the middle segment 9. The outer diameter of the left segment 8 is 20-26 mm, the outer diameter of the right segment 10 is 23-29 mm, and the middle segment 9 is in the structure of a circular truncated cone, the small end of the middle segment 9 is connected with the left segment 8, and the large end of the middle segment 9 is connected with the right segment 10. The transformer adopts a two-segment brushless rotary transformer (the outer diameter of the left segment 8 of the casing 1 is different from that of the right segment 10), realizes the functionality and processability of the annular transformer and the rotary transformer, and reasonably allocates the structural space of the annular transformer and the rotary transformer. The brushless rotary transformer meets the requirement of interfacing with a small-diameter mechanical interface, while reducing the volume and weight of the brushless rotary transformer.

[0027] Further, on the cross section along the axis of the middle segment 9, the included angle α between the inner wall of the middle segment 9 and the axis of the middle segment 9 is 30-60°.

[0028] Further, the rotating shaft 4 is a stepped shaft, and the annular transformer rotor 5 and the rotary transformer rotor 6 are axially positioned through the stepped shaft.

[0029] Further, the axis of the annular transformer stator 2, the axis of the annular transformer rotor 5 and the axis of the rotating shaft 4 are coaxial, and the axis of the rotary transformer stator 3, the axis of the rotary transformer rotor 6 and the axis of the rotating shaft 4 are coaxial. The center of the annular transformer stator 2 and the center of the annular transformer rotor 5 are aligned, and the center of the rotary transformer stator 3 and the center of the rotary transformer rotor 6 are aligned, thereby improving the measurement accuracy.

[0030] Further, the middle segment 9 is provided with a wire outlet hole, and the lead-out wires 11 of the annular transformer stator 2 and the rotary transformer stator 3 are led out of the casing 1 through the wire outlet hole.

[0031] Further, the brushless rotary transformer 360° rotation, for not more than 50 frame of small size products, the rotation speed of the brushless rotary transformer is ≤20000rpm. Considering the inertia and reliability, for large size products greater than or equal to 50 frame, the rotation speed of the brushless rotary transformer should be ≤10000rpm.

[0032] In the assembly of the brushless rotary transformer, the small outer diameter annular transformer stator 2 and the large outer diameter rotary transformer stator 3 are respectively pressed into the shell 1 from both sides of the shell 1, and attention is paid to the alignment of the lead-out wire 11 of the annular transformer stator 2 and the rotary transformer stator 3 and the lead-out hole of the shell 1, that is, the stator part of the brushless rotary transformer. The annular transformer rotor 5 and the rotary transformer rotor 6 are butt jointed by the lead wire 7, and the annular transformer rotor 5 and the rotary transformer rotor 6 are respectively pressed into the rotating shaft 4 from both sides of the rotating shaft 4, that is, the rotor part of the brushless rotary transformer. The brushless rotary transformer is used in a complete set of stator assembly and rotor assembly, and the axial direction should be aligned and the radial direction should be concentric during installation and use.

[0033] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects:

[0034] A two-section unequal diameter brushless rotary transformer, the brushless rotary transformer adopts a two-section unequal diameter brushless rotary transformer, realizes the functionality and process of the annular transformer and the rotary transformer, reasonably distributes the structural space of the annular transformer and the rotary transformer, and meets the demand of docking with a small outer diameter mechanical interface, while reducing the volume and weight of the brushless rotary transformer.

[0035] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A two-stage brushless rotary transformer of unequal diameters, characterized by, The two-section unequal-diameter brushless rotary transformer comprises a stator assembly and a rotor assembly, wherein, the stator assembly comprises a housing, an annular transformer stator and a rotary transformer stator, the housing comprises a left section and a right section, the outer diameter of the left section is smaller than that of the right section, the annular transformer stator is arranged in the left section, and the rotary transformer stator is arranged in the right section; the rotor assembly comprises a rotating shaft, an annular transformer rotor and a rotary transformer rotor, the annular transformer rotor and the rotary transformer rotor are sleeved on the rotating shaft, the annular transformer rotor is arranged in the annular transformer stator, and the rotary transformer rotor is arranged in the rotary transformer stator; the annular transformer rotor and the rotary transformer rotor are connected through a lead wire.

2. The two-section unequal-diameter brushless rotary transformer according to claim 1, wherein, the housing further comprises a middle section, and the left section and the right section are connected through the middle section.

3. The two-section unequal-diameter brushless rotary transformer according to claim 1, wherein, the outer diameter of the left section is 20-26 mm, and the outer diameter of the right section is 23-29 mm.

4. The two-section unequal-diameter brushless rotary transformer according to claim 2, wherein, the middle section is a circular truncated cone, the small end of the middle section is connected with the left section, and the large end of the middle section is connected with the right section.

5. The two-section unequal-diameter brushless rotary transformer according to claim 2, wherein, in the cross section along the axis of the middle section, the included angle α between the inner wall of the middle section and the axis of the middle section is 30-60°.

6. The two-section unequal-diameter brushless rotary transformer according to claim 1, wherein, the rotating shaft is a stepped shaft, and the annular transformer rotor and the rotary transformer rotor are axially positioned by the stepped shaft.

7. The two-section unequal-diameter brushless rotary transformer according to claim 1, wherein, the axis of the annular transformer stator, the axis of the annular transformer rotor and the axis of the rotating shaft are coaxial.

8. The two-section unequal-diameter brushless rotary transformer according to claim 1, wherein, the axis of the rotary transformer stator, the axis of the rotary transformer rotor and the axis of the rotating shaft are coaxial.

9. The two-section unequal-diameter brushless rotary transformer according to claim 2, wherein, the middle section is provided with a lead hole, and the lead-out wires of the annular transformer stator and the rotary transformer stator are led out of the housing through the lead hole.

10. The two-section unequal-diameter brushless rotary transformer according to claim 1, wherein, the brushless rotary transformer rotates 360°, and the rotation speed of the brushless rotary transformer is ≤20000 rpm.

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