CN203225625U - Rotor balance weight apparatus of double insulation frequency conversion induction motor - Google Patents
Rotor balance weight apparatus of double insulation frequency conversion induction motor Download PDFInfo
- Publication number
- CN203225625U CN203225625U CN 201320211358 CN201320211358U CN203225625U CN 203225625 U CN203225625 U CN 203225625U CN 201320211358 CN201320211358 CN 201320211358 CN 201320211358 U CN201320211358 U CN 201320211358U CN 203225625 U CN203225625 U CN 203225625U
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- China
- Prior art keywords
- balance weight
- rotor
- induction motor
- variable frequency
- frequency induction
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- Induction Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The utility model discloses a rotor balance weight apparatus of a double insulation frequency conversion induction motor, comprising an aluminum-casted rotor, a rotor spindle and a balance weight block. An additional insulation member is arranged between the aluminum-casted rotor and the rotor spindle; the balance weight block is installed on the rotor spindle; the bottom of the balance weight block abuts against the additional insulation member; a countersink and a through hole are arranged within the balance weight block and the countersink and the through hole are concentric; and a plurality of grooves are arranged on an internal surface of the through hole. By adopting above arrangement, the balance weight block is reasonable in structure and the countersink and the through hole can prevent the balance weight block from playing and sliding radially. The rotor balance weight apparatus is simple in structure, light in weight and reliable in operation.
Description
Technical field
The utility model relates to the variable frequency induction machine field, is specifically related to a kind of rotor balancing block assembly that is applied to double insulation variable frequency induction motor on hand held electric tool and other household electrical appliance.
Background technology
It is directly to adopt the method for interference machinery cooperation to press-fit the steel balance weight on armature spindle that present variable frequency induction rotor goes heavy balance, and the balance weight at steel material during the smoothing weighing apparatus gets on heavy.This method is feasible for the variable frequency induction motor that has ground connection to handle, but for the variable frequency induction motor with double insulated II class hand held electric tool, because rotor does not have corresponding insulation protection, is prone to potential safety hazard during use; Balance weight and armature spindle adopt interference fit simultaneously, and not only the processing request to armature spindle and balance weight is higher, gains in weight simultaneously and cost.
Summary of the invention
Deficiency at the prior art existence, the purpose of this utility model be to provide a kind of simple in structure, cost is low, reliable operation, the rotor that not only meets the variable frequency induction motor goes the requirement of heavy balance but also meets the rotor balancing block assembly of double insulation variable frequency induction motor of the double insulation standard of II class instrument.
For achieving the above object, the utility model provides following technical scheme: a kind of rotor balancing block assembly of double insulation variable frequency induction motor, comprise cast-aluminum rotor, armature spindle and balance weight, be provided with supplementary insulation spare between described cast-aluminum rotor and the armature spindle, on the described armature spindle balance weight is installed, described balance weight lower surface compresses supplementary insulation spare, and described balance weight inside is provided with counterbore and the through hole concentric with counterbore, and through-hole wall is provided with several grooves.
By adopting technique scheme, balance block structure arranges rationally, and counterbore and groove can prevent the balance weight axial endplay and radially slide.Simple in structure, balance weight is in light weight, reliable operation.
The utility model further is set to: described several grooves are rectangular channel.By this setting, groove structure arranges rationally, and it is more reliable to work.
The utility model also further is set to: described balance weight is made by steel material, and balance weight is circular ring.By this setting, the balance block structure setting is more reasonable.
The utility model also further is set to: described supplementary insulation spare is by BMC duroplastic moulding materials or the manufacturing of PPS thermoplastic molding material and one-shot forming.By this setting, can bear sine voltage 2500V/5mA/min and not puncture not flashover.
The utility model also further is set to: the rotor core of described cast-aluminum rotor is mouse cage type structure.By this setting, the rotor core of cast-aluminum rotor arranges rationally, makes that the utility model work is more reliable.
The utility model has the advantages that: the utility model has solved the class of insulation requirement of the rotor balancing block assembly of present variable frequency induction motor by supplementary insulation spare is set; Balance block structure arranges rationally, and counterbore and groove can prevent the balance weight axial endplay and radially slide the requirement of the processing request, weight and the cost that have solved balance weight, good reliability.
The utility model is described in further detail below in conjunction with specification drawings and specific embodiments.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the structural representation of the utility model embodiment balance weight.
Embodiment
Referring to Fig. 1 and Fig. 2, the rotor balancing block assembly of a kind of double insulation variable frequency induction motor that the utility model provides, comprise cast-aluminum rotor 1, armature spindle 2 and balance weight 3, be provided with supplementary insulation spare 4 between described cast-aluminum rotor 1 and the armature spindle 2, balance weight 3 is installed on the described armature spindle 2, described balance weight 3 lower surfaces compress supplementary insulation spare 4, and described balance weight 3 inside are provided with counterbore 5 and the through hole 6 concentric with counterbore 5, and through hole 6 inwalls are provided with several grooves 7.Described balance weight 3 structures arrange rationally, and counterbore 5 and groove 7 can prevent the balance weight axial endplay and radially slide.Simple in structure, balance weight is in light weight, reliable operation.
For making the utility model work more reliable, as preferably, described several grooves 7 of present embodiment are rectangular channel.Described balance weight 3 is made by steel material, and balance weight 3 is circular ring.
Described supplementary insulation spare 4 is by BMC duroplastic moulding materials or the manufacturing of PPS thermoplastic molding material and one-shot forming.This technology can be born sine voltage 2500V/5mA/min and do not punctured not flashover.Add the basic insulation of the variable frequency induction motor stator winding of using in the hand held electric tool, under this double insulation protection, use safety and reliability.
The rotor core of described cast-aluminum rotor 1 is mouse cage type structure.Its material can adopt cast aluminium, copper bar, silver bar etc.
The utility model has solved the class of insulation requirement of the rotor balancing block assembly of present variable frequency induction motor, has also solved the requirement of processing request, weight and the cost of balance weight simultaneously.The security reliability of motor of rotor balancing block assembly with this double insulation variable frequency induction motor is higher.
Above-described embodiment is to specific descriptions of the present utility model; only be used for the utility model is further specified; can not be interpreted as the restriction to the utility model protection range, the technician of this area makes some nonessential improvement and adjusts the utility model according to the content of above-mentioned utility model and all falls within the protection range of the present utility model.
Claims (5)
1. the rotor balancing block assembly of a double insulation variable frequency induction motor, comprise cast-aluminum rotor (1), armature spindle (2) and balance weight (3), it is characterized in that: be provided with supplementary insulation spare (4) between described cast-aluminum rotor (1) and the armature spindle (2), described armature spindle (2) is gone up balance weight (3) is installed, described balance weight (3) lower surface compresses supplementary insulation spare (4), described balance weight (3) inside is provided with counterbore (5) and the through hole (6) concentric with counterbore (5), and through hole (6) inwall is provided with several grooves (7).
2. the rotor balancing block assembly of a kind of double insulation variable frequency induction motor according to claim 1, it is characterized in that: described several grooves (7) are rectangular channel.
3. the rotor balancing block assembly of a kind of double insulation variable frequency induction motor according to claim 2, it is characterized in that: described balance weight (3) is made by steel material, and balance weight (3) is circular ring.
4. the rotor balancing block assembly of a kind of double insulation variable frequency induction motor according to claim 3, it is characterized in that: described supplementary insulation spare (4) is by BMC duroplastic moulding materials or the manufacturing of PPS thermoplastic molding material and one-shot forming.
5. the rotor balancing block assembly of a kind of double insulation variable frequency induction motor according to claim 4, it is characterized in that: the rotor core of described cast-aluminum rotor (1) is mouse cage type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320211358 CN203225625U (en) | 2013-04-23 | 2013-04-23 | Rotor balance weight apparatus of double insulation frequency conversion induction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320211358 CN203225625U (en) | 2013-04-23 | 2013-04-23 | Rotor balance weight apparatus of double insulation frequency conversion induction motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203225625U true CN203225625U (en) | 2013-10-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320211358 Expired - Lifetime CN203225625U (en) | 2013-04-23 | 2013-04-23 | Rotor balance weight apparatus of double insulation frequency conversion induction motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203225625U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324639A (en) * | 2020-11-03 | 2021-02-05 | 珠海格力节能环保制冷技术研究中心有限公司 | Counterweight structure and compressor with same |
-
2013
- 2013-04-23 CN CN 201320211358 patent/CN203225625U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324639A (en) * | 2020-11-03 | 2021-02-05 | 珠海格力节能环保制冷技术研究中心有限公司 | Counterweight structure and compressor with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131002 |