CN215990357U - Motor rotor suitable for small-displacement refrigerator compressor - Google Patents
Motor rotor suitable for small-displacement refrigerator compressor Download PDFInfo
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- CN215990357U CN215990357U CN202122181663.6U CN202122181663U CN215990357U CN 215990357 U CN215990357 U CN 215990357U CN 202122181663 U CN202122181663 U CN 202122181663U CN 215990357 U CN215990357 U CN 215990357U
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Abstract
The utility model discloses a motor rotor suitable for a small-displacement refrigerator compressor, which comprises magnetic steel, a rotor core and an end cover, wherein the rotor core consists of a rotor core main body section and a rotor core auxiliary section, the center of the rotor core main body section is provided with a large equal-diameter hole, a magnetic steel groove is formed near the excircle of the rotor core main body section, the magnetic steel is inserted into the magnetic steel groove, the center of the rotor core auxiliary section is provided with a small equal-diameter hole, only one end cover is arranged, the end cover, the rotor core main body section and the rotor core auxiliary section are sequentially riveted through rivets, the large equal-diameter hole and the small equal-diameter hole are combined into a step center hole, and a notch of the magnetic steel groove facing the rotor core auxiliary section is shielded by the rotor core auxiliary section. The power output of the motor of the rotor meets the economic requirement that a small-displacement refrigerator compressor (such as a vehicle-mounted compressor) is 1.2-2.0 CC, and the cost is low.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a motor rotor suitable for a small-displacement refrigerator compressor, and belongs to the technical field of vehicle-mounted small-displacement refrigerator compressor motors.
[ background of the utility model ]
The discharge capacity of a common vehicle-mounted small-discharge refrigerator compressor is 1.2-2.0 CC, the motor is arranged on the existing vehicle-mounted small refrigerator compressor, the stack height of a rotor core is 25mm, and the rotor core needs to be provided with a central step hole and a through groove for inserting and matching magnetic steel, so that the minimum limit stack height of the rotor core is only 25mm, but the compressor motor of the rotor can be suitable for 1.2-3.5 CC discharge capacity, and the motor blank waste with the stack height of the stator core and the rotor core reaching 25mm is a longer rated output power section. If the stack height of the rotor core is to be compressed, the length of the shaft sleeve of the cylinder block needs to be correspondingly shortened, the shortened shaft sleeve can influence the oil pumping effect of an oil pumping device of the compressor, and further directly influence the effective lubrication and cooling of a crankshaft, a bearing, a connecting rod and a piston, and in addition, the thinner rotor core provided with a central step hole and through grooves distributed at intervals in the circumferential direction is bound to have strength defects.
Because the magnetic steel through groove axially penetrates through the whole rotor core, two end covers are needed for rotor assembly to fix the magnetic steel in the rotor core.
[ Utility model ] content
The utility model aims to solve the technical problem of the prior art and provides a motor rotor suitable for a small-displacement refrigerator compressor.
Therefore, the utility model provides the following technical scheme:
the utility model provides a motor rotor suitable for small discharge capacity refrigerator compressor, includes magnet steel, rotor core and the end cover of fixed connection on rotor core, and its improvement point lies in: the rotor core is composed of a rotor core main body section and a rotor core auxiliary section, wherein the rotor core main body section is provided with a large equal-diameter hole in the axial direction of the center of the rotor core main body section and is provided with an even number of same magnetic steel grooves close to the outer circle of the rotor core main body section, the corresponding number of magnetic steels are inserted into the magnetic steel grooves one by one, the center of the rotor core auxiliary section is provided with a small equal-diameter hole in the axial direction of the center of the rotor core auxiliary section, only one end cover is provided, the end cover is sequentially and axially riveted with the rotor core main body section and the rotor core auxiliary section through rivets, the large equal-diameter hole and the small equal-diameter hole are combined to form a step center hole, and the notch of the magnetic steel groove facing the rotor core auxiliary section is completely shielded by the rotor core auxiliary section.
The stack height of the main body section of the rotor core is 15mm, and the height of the auxiliary section of the rotor core is 10 mm.
Preferably, the rotor core main body section and the rotor core auxiliary section are laminated into a whole by the rotor punching sheet through the self-buckling groove.
Rotor core auxiliary segment all adopts the rotor punching with rotor core body section, and the same material is folded and is pressed the back and can be from riveting the shaping to can simplify the processing step, save the process time cost.
Preferably, the rotor core main body section is formed by laminating and pressing rotor sheets into a whole through self-fastening grooves, the rotor core auxiliary section is made of aluminum, and the two sections are separately configured and are riveted and fixed through rivets.
When the rotor core auxiliary section adopts light aluminum materials, the cost of the rotor core auxiliary section is lower than that of the silicon steel rotor punching sheet, so that the using amount of the silicon steel material of the whole rotor core can be reduced, the cost is further saved, and the whole weight of the rotor core is reduced.
Preferably, the rotor core main body section is formed by laminating and pressing rotor punching sheets into a whole through self-buckling grooves, the rotor core auxiliary section is made of engineering plastics, and the two sections are separately configured and are riveted and fixed through rivets.
When the rotor core auxiliary section is made of engineering plastics, the cost of the rotor core auxiliary section is lower than that of silicon steel rotor punching sheets, so that the using amount of silicon steel materials of the whole rotor core can be reduced, the cost is further saved, and the whole self weight of the rotor core is reduced.
The utility model has the following advantages and positive effects:
the utility model designs the motor rotor according to the requirement of the small-displacement refrigerator compressor, designs the rotor core body section and the rotor core auxiliary section according to the function, wherein, the rotor core body section is provided with a magnetic steel groove and inserted magnetic steel to form the main body part of the rotor which can meet the design requirement of high stack and thin type, the auxiliary sections of the rotor core are respectively provided with small holes with the same diameter and the main body section of the rotor core is respectively provided with big holes with the same diameter, after the end cover is sequentially and axially riveted with the rotor core main body section and the rotor core auxiliary section, on one hand, the small holes with the same diameter and the large holes with the same diameter form a step center hole with a transition step, the transition step meets the assembly requirement of the rotor core and the compressor crankshaft (namely the transition step can be installed in an abutting fit with the end face of the shaft sleeve of the compressor cylinder seat), the shaft sleeve of the cylinder seat does not need to be shortened, and an oil pumping device of the compressor does not break on the oil pumping effect; on the other hand, one end cap manufacturing cost and installation cost can be saved compared to the prior art.
In a word, the power output of the motor of the rotor meets the economic requirement that a small-displacement refrigerator compressor (such as a vehicle-mounted compressor) is 1.2-2.0 CC, and the cost is low.
[ description of the drawings ]
FIG. 1 is a perspective view of a rotor core of the present invention;
FIG. 2 is a plan view of a rotor core of the present invention;
FIG. 3 is a cross-sectional view B-B of FIG. 2;
FIG. 4 is a perspective view of the rotor assembled with the stator of the present invention;
FIG. 5 is a plan view of the rotor assembled with the stator of the present invention;
fig. 6 is a sectional view a-a in fig. 5.
[ detailed description ] embodiments
Referring to fig. 1 to 3, a motor rotor suitable for a small displacement refrigerator compressor includes a magnetic steel 3, a rotor core 1, and an end cover 4 fixedly connected to the rotor core 1, and the improvement point is that: the rotor core is composed of a rotor core main body section 11 and a rotor core auxiliary section 12, a large equal-diameter hole 110 is axially formed in the center of the rotor core main body section 11, an even number of identical magnetic steel grooves 111 are formed in the position, close to the outer circle, of the rotor core main body section 11, corresponding numbers of magnetic steels 3 are inserted into the magnetic steel grooves 111 one by one, a small equal-diameter hole 120 is axially formed in the center of the rotor core auxiliary section 12, only one end cover 4 is provided, the end cover 4, the rotor core main body section 11 and the rotor core auxiliary section 12 are axially riveted in sequence through rivets 5, the large equal-diameter hole 110 and the small equal-diameter hole 120 are combined to form a step center hole 10 after riveting and fixing, and the notch, facing the rotor core auxiliary section 12, of the magnetic steel groove 111 is completely shielded by the rotor core auxiliary section 12, and fig. 6 is combined.
Referring to fig. 6, the end cover 4 is riveted to the end face 11' of the rotor core main body segment 11 by the rivet 5, that is, the end cover covers the notch 111-1 of the magnetic steel slot 111; the height of the magnetic steel 3 approaches or equals to the depth of the magnetic steel groove 111, so as to ensure that the magnetic steel 3 cannot be pressed and damaged after the end cover 4 is fixed; the depth of the magnet steel slots 111 is equal to the stack height of the rotor core body segments 11. Combine fig. 1 and 3.
The stack height of the rotor core main body section 11 is 15mm, the stack height of the stator core 2 is 15mm correspondingly, and the height of the rotor core auxiliary section 12 is 10 mm.
As an embodiment, the rotor core main body section 11 and the rotor core auxiliary section 12 are formed by self-buckling and laminating a plurality of rotor punching sheets, and the rotor punching sheets are made of silicon steel sheets.
As another embodiment, the rotor core main body section 11 is formed by self-buckling and laminating a plurality of rotor sheets into a whole, the rotor sheets are made of silicon steel sheets, the rotor core auxiliary section 12 is made of aluminum, and the rotor core main body section 11 and the rotor core auxiliary section 12 are in a split configuration and are riveted and fixed by rivets 5.
In yet another embodiment, the rotor core main body section 11 is formed by self-fastening and laminating a plurality of rotor sheets, the rotor sheets are made of silicon steel sheets, the rotor core auxiliary section 12 is made of engineering plastics, and the rotor core main body section 11 and the rotor core auxiliary section 12 are separately configured and are riveted and fixed by the rivet 5.
The engineering plastics adopt ABS reinforced nylon or adopt nylon 66.
Referring to fig. 6, the rivet 5 is formed by back-piercing a rivet flower 52 (rivet flange) at the end cover position, and a rivet head 51 is located on the outer end face of the rotor core auxiliary section 12.
Referring to fig. 4, 5 and 6, when the end face 11' (see fig. 1) is flush with the mounting end face 21 of the stator core 2 after the rotor and the stator are assembled (i.e. the rotor core 1 is mounted in the inner hole of the stator core 2), the rotor core auxiliary section 12 is exposed outside the lower end face of the stator core 2; the depth of the magnetic steel slots 111 is equal to the stack height of the stator core 2.
Referring to fig. 4, 5 and 6, when the stator is fixed to the cylinder block of the compressor, the step center hole 10 penetrates through one end (shown as the lower end) of the crankshaft 7 and the transition step 10-1 abuts against the end surface of the sleeve 62 of the cylinder block, the sleeve 62 is empty of the crankshaft 7, the mounting end surface 21 of the stator core 2 contacts with the three mounting legs 61 of the cylinder block, and the stator core 2 is screwed on the mounting legs 61.
In this embodiment, the magnetic steel 3 is a rectangular magnetic steel, and the number of the magnetic steel is 10; the cross section of the rotor core 1 is circular, and 10 magnetic steel slots 111 are uniformly arranged at intervals in the circumferential direction; the number of the rivets 5 is 10, and 10 rivet through holes 100 penetrate through the rotor core main body section 11 and the rotor core auxiliary section 12.
Claims (5)
1. The utility model provides a motor rotor suitable for small discharge capacity refrigerator compressor, includes magnet steel, rotor core and the end cover of fixed connection on rotor core, its characterized in that: the rotor core is composed of a rotor core main body section and a rotor core auxiliary section, the rotor core main body section is provided with a large hole with the same diameter in the axial direction at the center of the rotor core main body section, an even number of the same magnetic steel grooves are arranged close to the outer circle of the rotor core main body section, and the corresponding number of magnetic steels are inserted into the magnetic steel grooves one by one; the center of the rotor core auxiliary section is axially provided with a small hole with the same diameter; the number of the end covers is only one, the end covers are sequentially axially riveted with the rotor core main body section and the rotor core auxiliary section through rivets, the equal-diameter large holes and the equal-diameter small holes are combined to form a step center hole, and the magnetic steel grooves are completely shielded by the rotor core auxiliary section towards the notches of the rotor core auxiliary section.
2. The motor rotor for a small displacement refrigerator compressor as claimed in claim 1, wherein the stack height of the rotor core main section is 15mm, and the height of the rotor core auxiliary section is 10 mm.
3. The motor rotor adapted to a small-displacement refrigerator compressor according to claim 1 or 2, wherein: the rotor core main body section and the rotor core auxiliary section are laminated into a whole by the rotor punching sheets through the self-buckling grooves.
4. The motor rotor adapted to a small-displacement refrigerator compressor according to claim 1 or 2, wherein: the rotor core main body section is formed by laminating rotor punching sheets into a whole through self-buckling grooves, the rotor core auxiliary section is made of aluminum, and the rotor core main body section and the rotor core auxiliary section are separately configured and are riveted and fixed through rivets.
5. The motor rotor adapted to a small-displacement refrigerator compressor according to claim 1 or 2, wherein: the rotor core main body section is formed by laminating rotor punching sheets into a whole through self-buckling grooves, the rotor core auxiliary section is made of engineering plastics, and the rotor core main body section and the rotor core auxiliary section are separately configured and are riveted and fixed through rivets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122181663.6U CN215990357U (en) | 2021-09-04 | 2021-09-04 | Motor rotor suitable for small-displacement refrigerator compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122181663.6U CN215990357U (en) | 2021-09-04 | 2021-09-04 | Motor rotor suitable for small-displacement refrigerator compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215990357U true CN215990357U (en) | 2022-03-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122181663.6U Active CN215990357U (en) | 2021-09-04 | 2021-09-04 | Motor rotor suitable for small-displacement refrigerator compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215990357U (en) |
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2021
- 2021-09-04 CN CN202122181663.6U patent/CN215990357U/en active Active
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