Insulating coil sleeve sleeved on rotor shell

Abstract

The utility model relates to an insulating coil sleeve sleeved on a rotor shell. The problem that an insulating device between a rotating shaft and a rotor iron core in the prior art is complex in structure and difficult to disassemble and assemble is solved. The coil sleeve comprises a coil sleeve body, an annular assembly through hole is formed in the circumferential inner side of the coil sleeve body, a plurality of insulation bayonet socket structures arranged at equal intervals are distributed at the bottom of the coil sleeve body, a positioning slot structure used for clamping a rotor shell is arranged between every two adjacent insulation bayonet socket structures, and an insertion positioning assembly is arranged on the upper end face of a coil sleeve base. The utility model has the advantages of simple structure, convenient disassembly and assembly, good insulation effect, and better stacking and storage stability.

Description

Technical Field

[0001] The utility model relates to the technical field of insulating sleeves, in particular to an insulating coil sleeve sleeved on a rotor shell. Background Art

[0002] The rotor of a small motor generally consists of three parts: a shaft, a rotor core, and a rotor winding. The shaft is made of metal material, the rotor core is made of stacked silicon steel sheets, and the rotor winding is made of enameled wire. During the manufacture of the rotor, after the rotor core is fixed on the shaft, the shaft and the rotor core need to be impregnated with insulating varnish, and then the enameled wire can be wound in the slot of the rotor core to form the rotor winding. At present, although the process of impregnating the shaft and the rotor core with insulating varnish is very mature, there are still defects such as the complicated process of impregnating the insulating varnish, the long production cycle, the uneven insulating varnish, and the damage to the human body and the environment. In addition, the existing insulating device between the shaft and the rotor core is not only complex in structure, but also difficult to install, which is not conducive to mass production.

[0003] In order to solve the deficiencies of the existing technology, people have conducted long-term exploration and proposed various solutions. For example, a Chinese patent document discloses a rotor insulation sleeve [CN03249467.X], which consists of a shaft sleeve, an end face cover, and a slot cover, and is made of an insulating material such as PA or PPS by one injection. Two rotor insulation sleeves are respectively inserted into the rotor core from both ends of the rotor, which can provide insulation protection for the slots, end faces and part of the shaft of the rotor core.

[0004] The above solution solves the problem of complicated insulation process between the rotating shaft and the rotor core in the prior art to a certain extent, but the solution still has many shortcomings, such as: complex structure, difficult installation, and not conducive to mass production. Summary of the invention

[0005] The utility model aims to solve the above problems and provides an insulating coil sleeve sleeved on a rotor housing.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: an insulating coil sleeve sleeved on a rotor housing, comprising a coil sleeve, the inner side of the coil sleeve having an annular assembly through hole, a plurality of insulating socket structures equidistantly arranged are distributed on the bottom of the coil sleeve, and a positioning slot structure for clamping the rotor housing is provided between two adjacent insulating socket structures, and a plug-in positioning component is provided on the upper end surface of the coil sleeve.

[0007] In the above-mentioned insulating coil sleeve sleeved on the rotor housing, the insulating socket structure includes an insulating seat, which is hollow and has an inner wall with a plug-in limit portion extending inward.

[0008] In the above-mentioned insulating coil sleeve sleeved on the rotor housing, two plug-in slots are formed on the inner circumferential side of the insulating seat through the plug-in limiting portion.

[0009] In the above-mentioned insulating coil sleeve sleeved on the rotor housing, an annular sleeve groove for the rotor housing to be sleeved is formed between the outer wall of the insulating seat and the coil sleeve, and the upper end of the rotor housing is positioned by the lower end surface of the coil sleeve.

[0010] In the above-mentioned insulating coil sleeve sleeved on the rotor housing, the plug-in positioning assembly includes a plurality of arc-shaped clamping seats, which are arranged in a ring shape with equal spacing on the coil sleeve, and a positioning gap is provided on the inner side of the clamping seat for the bottom of the rotor housing to be clamped.

[0011] In the above-mentioned insulating coil sleeve sleeved on the rotor housing, at least two connecting rods are provided on the inner wall of the clamping seat, the height of the connecting rods is greater than the height of the clamping seat and is arranged corresponding to the above-mentioned plug-in slots.

[0012] In the above-mentioned insulating coil sleeve sleeved on the rotor housing, the positioning slot structure includes a positioning slot arranged between two adjacent clamping seats and located at the bottom of the coil sleeve, one end of the positioning slot is open and the other end extends toward the inner wall of the coil sleeve.

[0013] In the above-mentioned insulating coil sleeve sleeved on the rotor housing, the other end of the positioning groove is located between two adjacent insulating socket structures, and the inner wall of the insulating socket is provided with a blocking insulating portion.

[0014] In the above-mentioned insulating coil sleeve sleeved on the rotor housing, an auxiliary positioning portion located on the same arc line as the outer wall of the clamping seat is provided on the upper end surface of the positioning groove.

[0015] In the above-mentioned insulating coil sleeve sleeved on the rotor housing, a positioning space is formed between the auxiliary positioning portion and the above-mentioned blocking insulating portion.

[0016] Compared with the existing technology, the advantages of the utility model are: simple structure, good insulation effect, and convenient disassembly and assembly, which is conducive to improving production efficiency, can effectively block the rotor casing, greatly improve the insulation effect, and secondly, can be conveniently stacked and plugged in, and has good stability when stored. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the upper end surface structure of the coil sleeve in the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the lower end surface of the coil sleeve in the utility model;

[0019] Figure 3 It is a partial structural schematic diagram of the utility model;

[0020] In the figure, the coil sleeve 1, the annular assembly through hole 11, the insulating socket structure 2, the insulating seat 21, the plug-in limiting portion 22, the plug-in through groove 23, the annular sleeve groove 24, the positioning slot structure 3, the positioning groove 31, the blocking insulating portion 32, the auxiliary positioning portion 33, the positioning space 34, the plug-in positioning component 4, the clamping seat 41, the positioning gap 42, and the connecting rod 43. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] like Figure 1-3 As shown, an insulating coil sleeve mounted on a rotor housing comprises a coil sleeve 1, the inner side of the coil sleeve 1 having an annular assembly through hole 11, a plurality of insulating socket structures 2 equidistantly arranged are distributed on the bottom of the coil sleeve 1, and a positioning slot structure 3 for clamping the rotor housing is provided between two adjacent insulating socket structures 2, and a plug-in positioning component 4 is provided on the upper end surface of the coil sleeve 1.

[0023] The rotor core is inserted into the annular assembly through hole 11, the positioning slot structure 3 is used for inserting the connecting rod on the inner side of the rotor housing, and the plug-in positioning component 4 is used for positioning the bottom of the rotor housing at the upper end during stacking.

[0024] The insulating socket structure 2 includes an insulating socket 21 . The insulating socket 21 is hollow and has an inner wall with a plug-in limiting portion 22 extending inward.

[0025] It can be seen that two insertion slots 23 are formed on the inner circumferential side of the insulating seat 21 through the insertion limiting portion 22 .

[0026] The insertion slot 23 is used for longitudinal positioning of the insertion stroke of the stacked connection plug rod 43 .

[0027] Obviously, an annular insertion groove 24 for the rotor housing to be inserted into is formed between the outer wall of the insulating seat 21 and the coil sleeve 1, and the upper end of the rotor housing is positioned by the lower end surface of the coil sleeve 1.

[0028] The rotor housing is sleeved on the outer wall of the insulating seat 21 , and the connecting rod on the axial inner side is inserted into the positioning groove 31 .

[0029] Furthermore, the plug-in positioning assembly 4 includes a plurality of arc-shaped clamping seats 41 , which are arranged equidistantly in a ring shape on the coil sleeve 1 , and a positioning gap 42 for the bottom of the rotor housing to be clamped is provided inside the clamping seat 41 .

[0030] Specifically, at least two connecting rods 43 are disposed on the inner wall of the clamping seat 41 . The height of the connecting rods 43 is greater than the height of the clamping seat 41 and is disposed corresponding to the above-mentioned plug-in slots 23 .

[0031] The positioning gap 42 is used to insert and position the bottom of the rotor housing at the upper end.

[0032] Furthermore, the positioning slot structure 3 includes a positioning slot 31 disposed between two adjacent clamping seats 41 and located at the bottom of the coil sleeve 1 , wherein one end of the positioning slot 31 is open and the other end extends toward the inner wall of the coil sleeve 1 .

[0033] More specifically, the other end of the positioning groove 31 is located between two adjacent insulating socket structures 2 , and an insulating blocking portion 32 is disposed on the inner wall of the insulating socket 21 .

[0034] The barrier insulating portion 32 is used to provide insulation to the contact portion of the rotor housing connecting rod end.

[0035] Specifically, an auxiliary positioning portion 33 is disposed on the upper end surface of the positioning groove 31 and is located on the same arc line as the outer wall of the clamping seat 41 .

[0036] Preferably, a positioning space 34 is formed between the auxiliary positioning portion 33 and the above-mentioned blocking insulating portion 32 .

[0037] In summary, the principle of this embodiment is that by setting the positioning groove 31 and the insulating seat 21, the rotor housing can be completely inserted into the coil sleeve 1, and when stacked and stored, the positioning gap 42 is used to insert and position the bottom of the rotor housing on the upper side. Secondly, the mutual insertion of the insertion groove 23 and the connecting rod 43 is used to ensure its stability, and the rotor housing is more convenient to disassemble and assemble, and the insulation effect is good.

[0038] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0039] Although the present invention uses the terms such as coil sleeve 1, annular assembly through hole 11, insulating socket structure 2, insulating seat 21, plug-in limit portion 22, plug-in slot 23, annular sleeve slot 24, positioning slot structure 3, positioning slot 31, insulating barrier portion 32, auxiliary positioning portion 33, positioning space 34, plug-in positioning assembly 4, clamping seat 41, positioning gap 42, connecting rod 43, etc., it does not exclude the possibility of using other terms. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. An insulating coil sleeve sleeved on a rotor housing, comprising a coil sleeve (1), characterized in that: The coil sleeve (1) has an annular assembly through hole (11) on the inner side in the circumferential direction, a plurality of insulating socket structures (2) are distributed at an equal distance on the bottom of the coil sleeve (1), and a positioning slot structure (3) for clamping the rotor housing is provided between two adjacent insulating socket structures (2), and a plug-in positioning component (4) is provided on the upper end surface of the coil sleeve (1).

2. The insulating coil sleeve sleeved on the rotor housing according to claim 1, characterized in that: The insulating socket structure (2) comprises an insulating socket (21), the insulating socket (21) being hollow and having an inner wall having a plug-in limiting portion (22) extending inward.

3. The insulating coil sleeve sleeved on the rotor housing according to claim 2, characterized in that: Two insertion slots (23) are formed on the inner circumferential side of the insulating seat (21) through the insertion limit portion (22).

4. The insulating coil sleeve sleeved on the rotor housing according to claim 3, characterized in that: An annular insertion groove (24) into which the rotor shell can be inserted is formed between the outer wall of the insulating seat (21) and the coil sleeve (1), and the upper end of the rotor shell is positioned by the lower end surface of the coil sleeve (1).

5. The insulating coil sleeve sleeved on the rotor housing according to claim 3, characterized in that: The plug-in positioning assembly (4) comprises a plurality of arc-shaped clamping seats (41), the clamping seats (41) are arranged in an annular shape at equal intervals on the coil sleeve (1), and a positioning gap (42) for the bottom of the rotor housing to be inserted is provided on the inner side of the clamping seat (41).

6. The insulating coil sleeve sleeved on the rotor housing according to claim 5, characterized in that: At least two connecting rods (43) are arranged on the inner wall of the clamping seat (41). The height of the connecting rods (43) is greater than the height of the clamping seat (41) and is arranged corresponding to the above-mentioned plug-in slots (23).

7. The insulating coil sleeve sleeved on the rotor housing according to claim 2, characterized in that: The positioning slot structure (3) comprises a positioning slot (31) arranged between two adjacent clamping seats (41) and located at the bottom of the coil sleeve (1); one end of the positioning slot (31) is open and the other end extends toward the inner wall of the coil sleeve (1).

8. The insulating coil sleeve sleeved on the rotor housing according to claim 7, characterized in that: The other end of the positioning groove (31) is located between two adjacent insulating socket structures (2), and the inner wall of the insulating seat (21) is provided with a blocking insulating portion (32).

9. The insulating coil sleeve sleeved on the rotor housing according to claim 8, characterized in that: The upper end surface of the positioning groove (31) is provided with an auxiliary positioning portion (33) located on the same arc line as the outer wall of the clamping seat (41).

10. The insulating coil sleeve sleeved on the rotor housing according to claim 9, characterized in that: A positioning space (34) is formed between the auxiliary positioning portion (33) and the above-mentioned blocking insulating portion (32).

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