CN112787432B - Base structure of built-in protector - Google Patents
Base structure of built-in protector Download PDFInfo
- Publication number
- CN112787432B CN112787432B CN201911059214.5A CN201911059214A CN112787432B CN 112787432 B CN112787432 B CN 112787432B CN 201911059214 A CN201911059214 A CN 201911059214A CN 112787432 B CN112787432 B CN 112787432B
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- Prior art keywords
- cavity
- positioning
- base structure
- protector
- wall
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/04—Bases; Housings; Mountings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
Abstract
The invention relates to a base structure of a built-in protector, which is arranged on an insulating bracket of a motor stator assembly in a matching way, wherein the outer wall of the insulating bracket is provided with a positioning hole; the base structure comprises a cavity embedded with a protector body and a positioning support connected with the cavity, the cavity is arranged above the winding part of the insulating support, and the positioning support is provided with a longitudinal groove matched with the outer wall of the insulating support and a barb buckle connected with the positioning hole in the outer wall in a clamping manner. Compared with the prior art, the temperature sensing device has the advantages of sensitive temperature sensing, convenience in installation, high safety efficiency, no damage to a motor wire, high yield and the like.
Description
Technical Field
The invention relates to the field of motors, in particular to a base structure of a built-in protector.
Background
The working principle of the built-in protector is that the built-in protector senses the temperature of a motor to carry out operation or disconnect power supply protection. For the compressor, when abnormal work occurs, the protector is required to quickly sense the temperature of the motor and timely cut off the power supply for protection. The conventional built-in protector is of a binding type and a plug-in type, the plug-in type protector needs to be plugged in a binding post, and the main principle is that whether the temperature of a motor is normal or not is sensed through heat conduction of a refrigerant, and the temperature of the motor cannot be sensed at the fastest speed due to the fact that the plug-in type protector is away from the motor, the plug-in type protector is very sensitive under the condition that the refrigerant is not leaked, but if the refrigerant is leaked, the plug-in type protector is similar to a nominal protector; the binding type protector is bound and fixed on the motor winding and an insulating bracket of the motor by adopting binding wires, and although the temperature of the motor can be quickly sensed, the installation efficiency is low and the motor winding is easily damaged. Therefore, it is necessary to design a protector base which is convenient to install and can sensitively sense the temperature of the motor.
Disclosure of Invention
The present invention aims to overcome the defects of the prior art and provide a base structure of a built-in protector.
The purpose of the invention can be realized by the following technical scheme:
a base structure of a built-in protector is arranged on an insulating support of a motor stator assembly in a matched mode, and a positioning hole is formed in the outer wall of the insulating support; the base structure comprises a cavity embedded with a protector body and a positioning support connected with the cavity, the cavity is arranged above the winding part of the insulating support, and the positioning support is provided with a longitudinal groove matched with the outer wall of the insulating support and a barb buckle connected with the positioning hole in the outer wall in a clamping manner.
The base structure is applied to the insulating support of the motor stator assembly, the motor insulating support is used for supporting, the positioning hole of the support is used for clamping and fixing, the longitudinal groove is formed in the positioning support, the outer wall of the insulating support stretches into the longitudinal groove in a matched mode during installation, the bottom of the cavity can be close to the motor winding, the protector body is arranged inside the cavity, the protector body can be close to the motor winding to receive temperature sensing, the temperature sensing effect and speed of the protector body are improved, the installation process of the positioning support is simple and convenient through the longitudinal groove and the clamping structure, the installation efficiency is improved, and the motor winding cannot be damaged.
The distance between the bottom of the cavity and the winding part of the insulating bracket is 5-15 mm.
In consideration of the thickness of the motor winding, the bottom of the cavity is preferably arranged, so that the installation space of the motor winding is ensured, and the protector body and the motor winding are sufficiently close.
The barb buckle comprises an extension part and a buckle part arranged at the end part of the extension part, and the buckle part is of a trapezoidal structure.
The inclined plane of this trapezoidal body structure plays the installation guide effect, and in barb buckle installation, the outer wall of insulating support slips along this inclined plane, can not appear in the installation, and barb buckle and outer wall top edge card phenomenon are unfavorable for the installation.
And a positioning groove positioned above the positioning hole is arranged on the outer wall of the insulating support, and a convex block in limiting connection with the positioning groove is arranged at one end of the extending part of the barb buckle, which deviates from the buckling part.
When the clamping part is clamped into the positioning hole in the outer wall, the convex block is just in limit clamping connection with the positioning groove, and the base structure is prevented from continuously sliding downwards to damage a motor wire and playing a role in fixing.
Two barb buckles are symmetrically arranged on two sides of the positioning support.
The opening of the cavity faces the outer wall of the insulating support.
And the upper parts of the two sides of the cavity are provided with transverse grooves for leading-out wires of the protector body to extend out.
The cavity and the positioning support are of an integral connecting structure, and an opening matched with the opening of the cavity is formed in the positioning support.
The cavity and the positioning support are of an integrated structure, the protector body is directly placed into the cavity, then the base structure is installed on the outer wall of the edge support in a matched mode, the outer wall is just limited with the opening, the protector body is limited in the cavity, and the installation is convenient.
Compared with the prior art, the invention has the following advantages:
(1) The cavity for accommodating the protector body and the positioning support which is longitudinally clamped on the outer wall of the insulating support are designed, so that the protector body is close to the motor winding to the maximum extent, and the effect of the protector body on sensing the temperature of the motor is improved;
(2) The positioning support realizes a plug-in type installation effect through the longitudinal groove and the barb buckle, and is matched with the insulation support for supporting and fixing, so that a binding process is not needed, and the efficiency is improved;
(3) The installation through the buckle is fixed, and convenient operation has reduced the damage to the motor line, has reduced the defective rate of motor.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is a schematic view of the assembled structure of the present invention;
FIG. 4 is a schematic view of the assembled structure of the present invention;
FIG. 5 is a schematic top view of the assembled structure of the present invention;
FIG. 6 is a schematic front view of the assembled structure of the present invention;
in the drawing, 1 is a base structure, 11 is a cavity, 12 is a positioning bracket, 121 is a buckling part, 122 is a longitudinal groove, 123 is a transverse groove, 124 is a bump, 2 is an insulating bracket, 21 is an outer wall, 22 is a positioning groove, 23 is a winding part, and 24 is a positioning hole.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
A base structure of a built-in protector is applied to an insulating support of a motor stator assembly, and is supported by the motor insulating support and fastened by positioning holes of the support as shown in figure 1. Specific insulating support structure can refer to the insulating support in CN208571766U, but is not limited to the insulating support structure of this patent technology, as long as the insulating support has an outer wall 21, and a positioning hole 24 is provided on the outer wall 21, a positioning groove 22 is provided above the positioning hole 24, and a winding portion 23 is provided inside the outer wall.
The base structure 1 of the embodiment includes a cavity 11 embedded with a protector body, and a positioning bracket 12 connected with the cavity 11, as shown in fig. 4 and 5, the cavity 11 is disposed above a winding portion 23 of an insulating bracket 2, an opening of the cavity 11 faces an outer wall 21 of the insulating bracket 2, and a transverse groove 123 for extending an outgoing line of the protector body is disposed at an upper portion of two sides of the cavity 11; the positioning bracket 12 is provided with a longitudinal groove 122 matched with the outer wall 21 of the insulating bracket 2 and barb buckles clamped with the positioning holes 24 on the outer wall 21, and two barb buckles are symmetrically arranged on two sides of the positioning bracket 12, as shown in fig. 2; the barb buckle comprises an extension part and a buckle part 121 arranged at the end part of the extension part, wherein the buckle part 121 is of a trapezoid structure with a small lower part and a large upper part, one side close to the insulating support 2 is a trapezoid inclined surface, and the upper part of the extension part is provided with a convex block 124 in limit connection with the positioning groove 22. The cavity 11 and the positioning bracket 12 in this embodiment are of an integral connecting structure, the positioning bracket 12 is provided with an opening matched with the opening of the cavity 11, when the longitudinal groove of the positioning bracket 12 is assembled downwards on the outer wall 21, the outer wall 21 and the opening of the cavity 11 form a limiting cavity, so that the protector body in the cavity is ensured not to be removed from the cavity, and as shown in fig. 3 and 6, the limiting is natural, and the fixing device of the protector body is not required to be designed.
The base structure of this embodiment has cavity 11, and there is transverse groove 123 at both ends, the embedded protector body of cavity 11, and the lower extreme is close to motor winding and receives the temperature sensing, and wherein the distance of the bottom of cavity 11 and the winding portion 23 of insulating support 2 is 5mm, and transverse groove 123 discharges the lead-out wire of protector body coupling. The outer edge of the cavity protrudes out of the positioning support 12, the positioning support is provided with a longitudinal groove 122 and two barb buckles which are symmetrical left and right, the longitudinal groove is inserted into the outer wall of the insulating support, and when meeting with the positioning hole of the insulating support, the barb is wedged into the positioning hole and buckled to form installation and fixation.
The structure ensures that the protector body is still close to the motor winding to the maximum extent, and the temperature of the motor is sensed quickly, so that the binding type temperature sensing effect is achieved; the insulating support of the motor winding is used for realizing the fastening fixation, and the installation effect of the plug-in protector is achieved. This base structure utilizes insulating support to support and fix, no longer need with the ligature process, realizes efficiency and promotes. The installation through the buckle is fixed, and convenient operation has reduced the damage to the motor line, has reduced the defective rate of motor.
Example 2
The base structure of the present embodiment is substantially the same as that of embodiment 1, except that the size of the cavity 11, and the distance between the bottom of the cavity 11 and the winding portion 23 of the insulating holder 2 is 15mm.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (6)
1. A base structure of a built-in protector is characterized in that a base structure (1) is arranged on an insulating support (2) of a motor stator assembly in a matched mode, and a positioning hole (24) is formed in the outer wall (21) of the insulating support (2); it is characterized in that the preparation method is characterized in that,
the base structure (1) comprises a cavity (11) embedded with a protector body and a positioning support (12) connected with the cavity (11), the cavity (11) is arranged above a winding part (23) of the insulating support (2), and the positioning support (12) is provided with a longitudinal groove (122) matched with the outer wall (21) of the insulating support (2) and a barb buckle clamped with a positioning hole (24) in the outer wall (21);
the barb buckle comprises an extension part and a buckle part (121) arranged at the end part of the extension part, and the buckle part (121) is of a trapezoid structure; and a positioning groove (22) positioned above the positioning hole (24) is arranged on the outer wall (21) of the insulating support (2), and a convex block (124) in limit connection with the positioning groove (22) is arranged at one end of the extending part of the barb buckle, which deviates from the buckling part (121).
2. The base structure of the built-in protector as claimed in claim 1, wherein the distance between the bottom of the cavity (11) and the winding part (23) of the insulating support (2) is 5-15mm.
3. A base structure of a built-in protector according to claim 1, characterized in that two barb buckles are symmetrically arranged on both sides of the positioning bracket (12).
4. A base structure of a built-in protector according to claim 1, characterized in that the cavity (11) opens towards the outer wall (21) of the insulating support (2).
5. A base structure of a built-in protector according to claim 4, characterized in that the upper parts of both sides of the cavity (11) are provided with transverse grooves (123) for leading-out wires of the protector body to extend out.
6. A base structure of a built-in protector according to claim 4, characterized in that the cavity (11) and the positioning bracket (12) are an integral connecting structure, and the positioning bracket (12) is provided with an opening matched with the opening position of the cavity (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911059214.5A CN112787432B (en) | 2019-11-01 | 2019-11-01 | Base structure of built-in protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911059214.5A CN112787432B (en) | 2019-11-01 | 2019-11-01 | Base structure of built-in protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112787432A CN112787432A (en) | 2021-05-11 |
| CN112787432B true CN112787432B (en) | 2022-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911059214.5A Active CN112787432B (en) | 2019-11-01 | 2019-11-01 | Base structure of built-in protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112787432B (en) |
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| EP0410119B1 (en) * | 1989-07-25 | 1995-10-18 | Hofsäss, Ulrika | Temperature switch with bimetallic switch mechanism |
| DE19911070B4 (en) * | 1999-03-12 | 2007-04-26 | Robert Bosch Gmbh | Electric motor with a thermal fuse |
| WO2003071131A1 (en) * | 2002-02-19 | 2003-08-28 | Ubukata Industries Co.,Ltd. | Thermally-actuated switch |
| AU2003295156A1 (en) * | 2003-01-16 | 2004-08-10 | Otter Controls Limited | Improvements relating to the control of electric heating elements |
| GB0403395D0 (en) * | 2004-02-16 | 2004-03-17 | Switched Reluctance Drives Ltd | Magnetic circuits of electrical machines |
| DE102008060896B4 (en) * | 2008-08-11 | 2017-11-02 | Hanning Elektro-Werke Gmbh & Co. Kg | Package carrier device |
| JP5523058B2 (en) * | 2009-10-23 | 2014-06-18 | 株式会社ミツバ | Insulator for stator and rotating electric machine using the same |
| JP5938856B2 (en) * | 2011-06-28 | 2016-06-22 | 日産自動車株式会社 | Stator, motor and insulator using the stator |
| JP5726277B1 (en) * | 2013-11-29 | 2015-05-27 | 三菱電機株式会社 | Rotating electric machine, rotating electric machine stator, and method of manufacturing rotating electric machine stator |
| JP6259715B2 (en) * | 2014-05-30 | 2018-01-10 | Ｋｙｂ株式会社 | Rotating electric machine |
| CN204089400U (en) * | 2014-10-09 | 2015-01-07 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of motor stator component structure |
| CN104836358B (en) * | 2015-05-22 | 2018-03-30 | 广东威灵电机制造有限公司 | Stator winding end Insulating frame, plastic packaging stator assembly and plastic packaging motor |
| CN204652148U (en) * | 2015-05-22 | 2015-09-16 | 广东威灵电机制造有限公司 | Stator winding end Insulating frame, plastic packaging stator assembly and plastic packaging motor |
| JP2018019564A (en) * | 2016-07-29 | 2018-02-01 | 株式会社マキタ | Coil forming method for power tool motor, power tool |
| US10431971B2 (en) * | 2017-01-04 | 2019-10-01 | Te Connectivity Corporation | Thermal protector |
| CN107947420B (en) * | 2017-11-28 | 2020-05-05 | 广东美的环境电器制造有限公司 | Insulating frame for motor, insulating frame, motor stator and manufacturing method of motor stator |
| CN207968102U (en) * | 2018-04-10 | 2018-10-12 | 广东威灵电机制造有限公司 | Motor, stator module and its cover board |
| CN209545904U (en) * | 2018-11-16 | 2019-10-25 | 徐成东 | PTC electric heater bracket |
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2019
- 2019-11-01 CN CN201911059214.5A patent/CN112787432B/en active Active
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| CN112787432A (en) | 2021-05-11 |
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