CN105305709B - Renewable type motor rotor crosses thermocutout - Google Patents
Renewable type motor rotor crosses thermocutout Download PDFInfo
- Publication number
- CN105305709B CN105305709B CN201510673977.4A CN201510673977A CN105305709B CN 105305709 B CN105305709 B CN 105305709B CN 201510673977 A CN201510673977 A CN 201510673977A CN 105305709 B CN105305709 B CN 105305709B
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- China
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- push rod
- armature spindle
- rear portion
- thermocutout
- stepped
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- Permanent Magnet Type Synchronous Machine (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The present invention relates to a kind of renewable type motor rotor to cross thermocutout, including armature spindle, it is characterised in that：Armature spindle is hollow shaft and central cavity is made up of the anterior minor diameter cavity and rear portion major diameter cavity being connected, stepped push rod is provided with the major diameter cavity of rear portion, stretched into after the anterior suit return spring of stepped push rod in the anterior minor diameter cavity of armature spindle and lean out armature spindle front end, the position that motor terminal outer side of lid corresponds to stepped push rod is fixed with the normally-closed contact being connected with external circuit, stepped push rod rear portion is provided with middle cavity and hollow intracavitary is provided with memory metal spring, the rear portion major diameter cavity of armature spindle corresponds to stepped push rod back-end location and is sequentially provided with cylindric magnet and jackscrew, return spring is relied between the rear portion major diameter cavity floor of armature spindle and the ladder end face of stepped push rod, memory metal spring is relied between the middle cavity floor of stepped push rod and cylindric magnet end face.Its is simple in construction, safe and reliable.
Description
Technical field
The present invention relates to motor rotor, particularly a kind of renewable type motor rotor crosses thermocutout.
Background technology
Traditional electric motor stator section arranged that thermocutout was easier, and temperature is embedded in unshakable in one's determination or coil and is passed
Sensor or temperature step switch, when motor stator overheats, stator safeties very easily rely on wire will
Heat alarm passes out flows through the circuit of temperature switch by external circuitry cut-out circuit or directly cut-out, prevents motor
Worked in the case of overheat and cause to burn.But on motor rotor because can not connecting lead wire and be inconvenient to put
Thermocutout was put, then the superheat state of rotor can not be monitored, and potential safety hazard be present.
The content of the invention
The invention aims to provide a kind of to solve the problems, such as what motor rotor superheat state can not be monitored
Renewable type motor rotor crosses thermocutout, and its is simple in construction, safe and reliable.
The technical scheme is that：
A kind of renewable type motor rotor crosses thermocutout, including armature spindle, it is characterised in that：The armature spindle is
Hollow shaft and central cavity is made up of the anterior minor diameter cavity and rear portion major diameter cavity being connected, the rear portion major diameter are empty
Intracavitary is provided with stepped push rod, and the anterior minor diameter cavity of armature spindle is stretched into after the anterior suit return spring of stepped push rod
In and lean out armature spindle front end, motor terminal outer side of lid correspond to stepped push rod position be fixed be connected with external circuit it is normal
Closed contact, the stepped push rod rear portion is provided with middle cavity and the hollow intracavitary is provided with memory metal spring, the armature spindle
Rear portion major diameter cavity correspond to stepped push rod back-end location and be sequentially provided with cylindric magnet and jackscrew, the return spring top
It is against between the rear portion major diameter cavity floor of armature spindle and the ladder end face of stepped push rod, the memory metal spring top leans on
Between the middle cavity floor of stepped push rod and cylindric magnet end face.
Above-mentioned renewable type motor rotor crosses thermocutout, and the rear portion major diameter cavity end of the armature spindle is set
There is internal thread, content components are enclosed in cavity with being threadedly coupled fixation with jackscrew.
Above-mentioned renewable type motor rotor crosses thermocutout, is provided with and stepped push rod on the inside of the normally-closed contact
Preceding end in contact or separated contact head.
Above-mentioned renewable type motor rotor crosses thermocutout, and the memory metal spring is made up of Ti-Ni alloy,
The elongation of certain length is had after heated.
Above-mentioned renewable type motor rotor crosses thermocutout, and the stepped push rod is made up of ferromagnetic material.
Above-mentioned renewable type motor rotor crosses thermocutout, and the elastic force of the return spring is much smaller than memorial alloy
Caused elastic force after spring temperature distortion, so that return spring can only be after memory alloy spring cools down return by push rod top
Return.
Above-mentioned renewable type motor rotor crosses thermocutout, and the attraction between the push rod and magnet is much smaller than
Caused elastic force after memory alloy spring temperature distortion, to eliminate trembling for normally-closed contact.
The beneficial effects of the invention are as follows：
1st, when rotor overheats, memory alloy spring extends, and pushes stepped push rod to motor drive end bearing bracket direction, stepped
Disconnecting circuit after push rod front end contacts with normally-closed contact, motor stall after electric current is cut off, solve conventional motor and turn
Son can not install the problem of overtemperature protection additional, harm caused by avoiding rotor overheat, prevent motor rotor from burning；
2nd, due to overcome the attraction of push rod and magnet in memory alloy spring elongation process, thus overcome attraction it
Moment can push push rod open afterwards, rather than slowly push open, and this guarantees contact chatter problem, reliable operation will not occur；
3rd, after temperature of rotor declines, memory metal its length shortens therewith, and push rod is in the presence of return spring
Initial position is returned to, realizes repeated multiple times use.
Brief description of the drawings
Fig. 1 is the use state diagram of the present invention；
In figure：1. jackscrew, 2. armature spindles, 3. stepped push rods, 301. front portions, 302. rear portions, 4. memory metal springs, 5.
Return spring, 6. rotors, 7. motor drive end bearing brackets, 8. normally-closed contacts, 801. contact heads, 9. cylindric magnet, 10. external electricals
Road.
Embodiment
As illustrated, the renewable type motor rotor crosses thermocutout, including it is arranged in the armature spindle at the center of rotor 6
2, the armature spindle 2 is hollow shaft and central cavity is made up of the anterior minor diameter cavity and rear portion major diameter cavity being connected.
Stepped push rod 3 is provided with the rear portion major diameter cavity, the stepped front portion of push rod 3 301 is stretched into after being set with return spring 5
In the anterior minor diameter cavity of armature spindle 2 and the front end of armature spindle 2 is leant out, the corresponding stepped push rod 3 in the outside of motor drive end bearing bracket 7
Position is fixed with the normally-closed contact 8 being connected with external circuit 10, and the inner side of normally-closed contact 8 is provided with and the stepped front end of push rod 3
Contact or separated contact head 801.The rear portion 302 of stepped push rod 3 is provided with middle cavity and the hollow intracavitary is provided with memory
Metal spring 4, the rear portion major diameter cavity of the armature spindle 2 correspond to the stepped back-end location of push rod 3 and are sequentially provided with cylindric magnetic
Iron 9 and jackscrew 1, the rear portion major diameter cavity end of the armature spindle 2 are provided with internal thread, will to be threadedly coupled fixation with jackscrew 1
Content components are enclosed in cavity.The return spring 5 relies on the rear portion major diameter cavity floor of armature spindle 2 and stepped top
Between the ladder end face of bar 3, the memory metal spring 4 relies on the middle cavity floor of stepped push rod 3 and cylindric magnet 9
Between end face.The memory metal spring 4 is made up of Ti-Ni alloy, and the elongation of certain length is had after heated.Described time
The elastic force of position spring 5 is much smaller than caused elastic force after the temperature distortion of memory alloy spring 4, so that return spring 5 can only remembered
Alloy spring 4 goes back to push rod top after cooling down return.The stepped push rod 3 is made up of ferromagnetic material such as iron, carbon steel etc., its
Rear end is attracted in close contact therewith by cylindric magnet 9.Attraction between the stepped push rod 3 and cylindric magnet 9 is remote
Less than caused elastic force after the temperature distortion of memory alloy spring 4.
Claims (7)
1. a kind of renewable type motor rotor crosses thermocutout, including armature spindle, it is characterised in that：The armature spindle is sky
Mandrel and central cavity is made up of the anterior minor diameter cavity and rear portion major diameter cavity being connected, the rear portion major diameter cavity
It is interior to be provided with stepped push rod, stretched into after the anterior suit return spring of stepped push rod in the anterior minor diameter cavity of armature spindle
And lean out armature spindle front end, motor terminal outer side of lid correspond to stepped push rod position be fixed be connected with external circuit it is normally closed
Contact, the stepped push rod rear portion is provided with middle cavity and the hollow intracavitary is provided with memory metal spring, the armature spindle
Rear portion major diameter cavity corresponds to stepped push rod back-end location and is sequentially provided with cylindric magnet and jackscrew, and the return spring leans
Between the rear portion major diameter cavity floor of armature spindle and the ladder end face of stepped push rod, the memory metal spring relies on
Between the middle cavity floor of stepped push rod and cylindric magnet end face.
2. renewable type motor rotor according to claim 1 crosses thermocutout, it is characterised in that：The armature spindle
Rear portion major diameter cavity end be provided with internal thread.
3. renewable type motor rotor according to claim 1 crosses thermocutout, it is characterised in that：It is described normally closed tactile
Point inner side is provided with and end in contact before stepped push rod or the contact head separated.
4. renewable type motor rotor according to claim 1 crosses thermocutout, it is characterised in that：The memory gold
Category spring is made up of Ti-Ni alloy.
5. renewable type motor rotor according to claim 1 crosses thermocutout, it is characterised in that：It is described stepped
Push rod is made up of ferromagnetic material.
6. renewable type motor rotor according to claim 1 crosses thermocutout, it is characterised in that：The return bullet
The elastic force of spring is much smaller than caused elastic force after memory alloy spring temperature distortion.
7. renewable type motor rotor according to claim 1 crosses thermocutout, it is characterised in that：It is described stepped
Attraction between push rod and cylindric magnet is much smaller than caused elastic force after memory alloy spring temperature distortion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510673977.4A CN105305709B (en) | 2015-10-19 | 2015-10-19 | Renewable type motor rotor crosses thermocutout |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510673977.4A CN105305709B (en) | 2015-10-19 | 2015-10-19 | Renewable type motor rotor crosses thermocutout |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105305709A CN105305709A (en) | 2016-02-03 |
| CN105305709B true CN105305709B (en) | 2018-02-09 |
Family
ID=55202602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510673977.4A Active CN105305709B (en) | 2015-10-19 | 2015-10-19 | Renewable type motor rotor crosses thermocutout |
Country Status (1)
| Country | Link |
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| CN (1) | CN105305709B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9746044B1 (en) * | 2016-04-15 | 2017-08-29 | GM Global Technology Operations LLC | Resettable sensor assembly and system |
| EP3584911A4 (en) * | 2017-02-20 | 2020-01-08 | Panasonic Intellectual Property Management Co., Ltd. | Electric motor and electric motor manufacturing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4227102A (en) * | 1978-05-10 | 1980-10-07 | Rozenfeld Lev M | Electrical machine with cryogenic cooling |
| CN103107647A (en) * | 2011-11-11 | 2013-05-15 | 中国科学院沈阳科学仪器研制中心有限公司 | Motor for dry-type vacuum pump |
| CN103780026A (en) * | 2014-01-06 | 2014-05-07 | 广东美芝精密制造有限公司 | Motor rotor die casting tooling and method and inner diameter protection device |
| CN205051501U (en) * | 2015-10-19 | 2016-02-24 | 锦州汉拿电机有限公司 | Overheated safeties of retrieval formula motor rotor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5929843A (en) * | 1982-08-10 | 1984-02-17 | Mitsubishi Electric Corp | Generator direct-coupled flywheel device with motor starting means |
-
2015
- 2015-10-19 CN CN201510673977.4A patent/CN105305709B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4227102A (en) * | 1978-05-10 | 1980-10-07 | Rozenfeld Lev M | Electrical machine with cryogenic cooling |
| CN103107647A (en) * | 2011-11-11 | 2013-05-15 | 中国科学院沈阳科学仪器研制中心有限公司 | Motor for dry-type vacuum pump |
| CN103780026A (en) * | 2014-01-06 | 2014-05-07 | 广东美芝精密制造有限公司 | Motor rotor die casting tooling and method and inner diameter protection device |
| CN205051501U (en) * | 2015-10-19 | 2016-02-24 | 锦州汉拿电机有限公司 | Overheated safeties of retrieval formula motor rotor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105305709A (en) | 2016-02-03 |
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