Stator assembly and motor
Technical Field
The invention relates to the field of motors, in particular to a stator assembly and a motor.
Background
With the rapid development of science and technology, the living standard of people is continuously improved, more and more electric products enter our families, and related regulations are provided in all countries of the world to restrict various injuries to human bodies caused by the electric products, so that safety design plays a vital role in the whole design process of the products, wherein the safety distance is one of the most important parts in the product design.
Connection terminals are particularly important components of stator assemblies and motors that carry the voltage, current or signals from external wires to corresponding contacts of their mating connectors, so that the connection terminals must have a fixed relative position and a stable profile. The coil of stator module generally adopts the enameled wire, and when the drawing forth of coil, enameled wire and connecting terminal lug connection are a swift simple mode, however the connecting terminal of motor takes place to shift very easily, causes connecting terminal and enameled wire to be connected insecurely, takes place enameled wire and connecting terminal phase separation even, leads to enameled wire and connecting terminal electricity to be connected poorly, influences the normal use of motor, and the reliability of motor reduces, leads to motor life to be shorter. The connection terminals not only play a role in electrical connection, but also play a role in precisely centering and locking the plug-in. The deformation of the connection terminal may cause difficulty in assembly, and seriously affect the connection performance, such as severe bending and cracking of the connection terminal.
Disclosure of Invention
The technical problems to be solved and the technical task to be solved by the invention are to perfect and improve the prior art scheme, and provide a stator assembly and a motor, which aim to effectively fix connecting terminals and keep the appearance structure of the terminals, ensure the safety distance between the connecting terminals and improve the safety and reliability of the motor. For this purpose, the present invention adopts the following technical scheme.
The stator assembly comprises an insulating framework, connecting terminals and a terminal box, wherein the insulating framework is used for coating a stator core, the terminal box comprises a terminal box middle plate, a terminal box fixed end positioned below the terminal box middle plate and a terminal box interface end positioned above the terminal box middle plate, terminal positioning fixing holes penetrating up and down are formed in the terminal box middle plate, a coil and a terminal groove matched and fixed with the terminal box fixed end are formed in the insulating framework, the connecting terminals are fixedly connected with the terminal groove and the terminal box, and terminal box partition plates and insulating framework partition plates used for increasing electric gaps between adjacent connecting terminals are respectively arranged below the terminal box middle plate and on the upper end face of the terminal groove; the fixed end of the terminal box is connected with the terminal groove through snap fit. Creepage distance and electric gap between two adjacent connecting terminals are effectively ensured, firmness and reliability of terminal box fixation are improved, and service life and safety of the motor are improved.
As a further improvement and supplement to the above-mentioned technical solutions, the present invention also includes the following additional technical features.
Preferably, the terminal box partition board is arranged between the positioning and fixing holes of the two adjacent terminals, the insulating framework partition board is arranged on the upper end face between the two adjacent terminal grooves, and the insulating framework partition board between the two adjacent connecting terminals and the terminal box partition board are arranged in a left-right staggered mode and are mutually shielded in a left-right viewing direction. Through the baffle that the staggered arrangement sheltered from each other, the extension of two adjacent connecting terminals on electric safety clearance has conveniently been realized, makes electric clearance bigger, and electric safety is higher.
Preferably, the distance between the upper end face of the insulating framework partition plate and the lower end face of the terminal box middle plate corresponding to the insulating framework partition plate in the height direction is larger than 0.2mm, and the distance between the lower end face of the insulating framework partition plate and the upper end face of the terminal groove corresponding to the insulating framework partition plate in the height direction is larger than 0.2mm. The reasonable spacing is not only convenient for installation, but also can obtain better electric safety clearance.
Preferably, the buckle comprises a clamping hole and a buckling protrusion, wherein the clamping hole is arranged on the side surface of the fixed end of the terminal box, and the buckling protrusion is arranged on the side surface of the terminal groove. Simple and reasonable structure and convenient buckling.
Preferably, the clamping holes and the buckling protrusions are symmetrically arranged at the left side and the right side of the fixed end of the terminal box and the terminal groove at 2 positions. Reasonable in number and positions, convenient to operate and low in structural cost.
Preferably, after the clamping hole and the buckling protrusion are clamped, the distance between the lower end surface of the terminal box middle plate and the upper plane of the insulating framework terminal groove is 0 to 2mm. The distance is reasonable, foreign matters can not enter due to overlarge distance, and the installation and the disassembly are convenient.
Preferably, the lower end face of the terminal box middle plate is provided with a baffle, the baffle is fixedly connected with the terminal groove in a lateral fit manner, and a fit clearance between the lower end face of the terminal box middle plate and the upper end face of the terminal groove is 0 to 1.5mm. Realize the fixed side direction location, reasonable upper and lower fit clearance is convenient for install and dismantle.
Preferably, the terminal groove in be equipped with the location baffle post, the baffle be several font, the inboard on the left and right sides of several font is laminated with terminal groove inboard side, the inboard on the middle limit of several font touches with the location baffle post side. Simple structure and convenient positioning.
Preferably, the middle part of the connecting terminal is provided with a lateral recess and a positioning surface for positioning up and down, the positioning surface is positioned below the recess, the lower part of the connecting terminal is embedded into the terminal groove and then is connected with the terminal groove in a fastening fit manner, and the upper part of the connecting terminal passes through the terminal positioning fixing hole and then realizes the positioning with the terminal positioning fixing hole through the middle recess and the positioning surface of the connecting terminal. Through these location can make connecting terminal's position fix, also can not make connecting terminal's appearance structure take place obvious change, plays the guard action to connecting terminal, makes connecting terminal play accurate centering and locking to the effect of plug-in components, and the side direction is sunken not only can be located, has the effect of stealing the sky moreover, is convenient for assemble in place, connects fixed convenience, simple structure, the technology is ripe.
Preferably, the upper end surface of the terminal box middle plate is provided with a plurality of deformable sheets. After the motor is assembled, the thin sheet at the position is subjected to the force applied by the front end cover, and the thin sheet is flexibly deformed, so that the force can be finally transmitted to the connecting terminal, the terminal box cannot shift, the connection between the enameled wire and the connecting terminal is very firm, and the enameled wire and the connecting terminal cannot be separated.
Preferably, the number of the thin sheets is 2-4, and the thin sheets are symmetrically arranged at the left side and the right side of the interface end of the terminal box. The number is reasonable, and the deformation stress is even.
An electric machine comprising a stator assembly, the stator assembly being as claimed in any one of the preceding claims. The safe electric distance between the adjacent connecting terminals of the motor is larger, the terminal box is fixed in a buckle fixing mode, the terminal box is convenient to assemble, the terminal box can be firmly fixed, the position and the appearance structure of the connecting terminals are guaranteed under the force transmission effect through the comprehensive positioning and the setting of the thin sheet, the enameled wires are firmly connected with the connecting terminals, the separation can not occur, the electric performance and the mechanical performance of the connecting terminals can be guaranteed, the safety and the firmness of the motor are effectively improved, and the service life of the motor is prolonged.
The beneficial effects are that:
1. through set up terminal box and insulating skeleton's that mutual staggered sheltered from each other baffle between two adjacent connecting terminals, adjacent terminal's electric gap and creepage distance route extension, the safe distance increases, has improved the electrical strength performance of motor, has guaranteed the security of motor.
2. After the motor is assembled by clamping the buckle, the motor part presses the thin sheet arranged on the plane of the middle plate of the terminal box, and as the middle part of the connecting terminal is matched with the middle plate of the terminal box in a penetrating way, the lower part of the connecting terminal is tightly matched with the terminal groove, so that the force is transferred to the terminal in a primary stage, and the position of the terminal in the vertical direction is ensured to be fixed; the baffle plate on the terminal box is in lateral clearance fit connection with the terminal groove, the upper part of the connecting terminal penetrates through the terminal positioning fixing hole formed in the terminal box, and the force applied to the terminal box by the motor part is added, so that the position fixing and the appearance structure of the connecting terminal in the horizontal direction are ensured; through location and transmission of force, guaranteed connecting terminal's position and appearance structure, enameled wire and connecting terminal are connected very firmly, can not take place the separation, and terminal box and connecting terminal can insert the connector that matches smoothly, and this kind of structure is not only assembled simply convenient, can guarantee connecting terminal's electrical property and mechanical properties moreover, improves motor's life.
Drawings
Fig. 1 is a schematic view of a stator assembly according to the present invention.
Fig. 2 is a schematic view of the insulating framework structure of the present invention.
Fig. 3 is a schematic view of the structure of the connecting terminal of the present invention.
Fig. 4 is a schematic view of the structure of the terminal box of the present invention.
Fig. 5 is a schematic view of the positions of the terminal box separator and the insulating frame separator according to the present invention.
Fig. 6 is a schematic view of the position of the baffle plate of the present invention.
In the figure: 1-a terminal box; 2-an insulating framework; 3-connecting terminals; 4-stator core; 101-a terminal box fixed end; 102-a terminal box middle plate; 103-terminal box interface end; 104-clamping holes; 105-flakes; 106-terminal box separator; 107-baffle; 108-terminal positioning and fixing holes; 201-terminal groove; 202-insulating framework spacers; 203-buckling convex; 204-positioning a baffle column; 301-connecting the lower part of the terminal; 302-upper connection terminals; 303—a locating surface; 304-recessing; .
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the attached drawings.
As shown in fig. 1-6, a stator assembly comprises an insulating framework 2 for coating a stator core 4, a connecting terminal 3 and a terminal box 1, wherein the terminal box 1 comprises a terminal box middle plate 102, a terminal box fixed end 101 positioned below the terminal box middle plate 102 and a terminal box interface end 103 positioned above the terminal box middle plate 102, the terminal box middle plate 102 is provided with a terminal positioning fixed hole 108 penetrating up and down, the insulating framework 2 is provided with a coil and a terminal groove 201 matched and fixed with the terminal box fixed end 101, the connecting terminal 3 is fixedly connected with the terminal groove 201 and the terminal box 1, and a terminal box baffle 106 and an insulating framework baffle 202 for increasing an electric gap between adjacent connecting terminals 3 are respectively arranged below the terminal box middle plate 102 and on the upper end surface of the terminal groove 201; the terminal box fixed end 101 is connected with the terminal groove 201 through a snap fit.
In order to achieve higher electrical safety, the terminal box spacer 106 is disposed between the adjacent two terminal positioning fixing holes 108, the insulating frame spacer 202 is disposed on the upper end face between the adjacent two terminal grooves 201, and the insulating frame spacer 202 between the adjacent two connection terminals 3 and the terminal box spacer 106 are arranged in a staggered manner from side to side and are shielded from each other in the left-right viewing direction. Because the space is very limited, can't offer the groove at insulating skeleton 2 or terminal box 1 to the cooperation of baffle and groove guarantees the safe distance of motor, uses insulating skeleton baffle 202 and terminal box baffle 106 dislocation arrangement, and the narrow and small limited space of make full use of increases safe distance, has conveniently realized the extension of two adjacent connecting terminals 3 on electric safety clearance, makes creepage distance and electric clearance bigger, and electric safety is higher.
For ease of installation, the spacing between the upper end face of the insulating skeletal spacer 202 and the lower end face of the terminal box middle plate 102 corresponding thereto in the height direction is 0.4mm, and the spacing between the lower end face of the insulating terminal box spacer 106 and the upper end face of the terminal groove 201 corresponding thereto in the height direction is 0.4mm. The reasonable spacing is not only convenient for installation, but also can obtain better electric safety clearance.
In order to facilitate the buckling, the buckle comprises a clamping hole 104 and a buckling protrusion 203, wherein the clamping hole 104 is arranged on the side surface of the fixed end 101 of the terminal box, and the buckling protrusion 203 is arranged on the side surface of the terminal groove 201. Simple and reasonable structure and convenient buckling.
For convenient operation, the clamping hole 104 and the buckling protrusion 203 are symmetrically arranged at 2 positions, on the left side and the right side of the fixed end 101 of the terminal box and the terminal groove 201, and the width and the height of the clamping hole 104 are larger than those of the buckling protrusion 203. Reasonable number, size and position, convenient operation and low structure cost.
In order to achieve better stability, after the clamping holes 104 and the buckling protrusions 203 are clamped, the lower end face of the terminal box middle plate 102 is attached to the upper plane of the terminal groove 201 of the insulating framework 2. The device is arranged in a sticking way, is tightly assembled and has good stability.
In order to facilitate the lateral positioning and fixing, the lower end face of the terminal box middle plate 102 is provided with a baffle 107, the baffle 107 is fixedly connected with the terminal groove 201 in a lateral matching way, and a matching clearance between the lower end face of the terminal box middle plate 102 and the upper end face of the terminal groove 201 is 0 to 1.5mm. Realize the fixed side direction location, paste the cooperation from top to bottom and make the installation cooperation more reliable and stable.
In order to simplify the positioning structure, 4 positioning blocking posts 204 are arranged in the terminal groove 201, the baffle 107 is shaped like a Chinese character 'ji', the left and right sides of the Chinese character 'ji' are attached to the side surfaces of the terminal groove 201 on the inner side, the inner side of the middle side of the Chinese character 'ji' is contacted with the side surfaces of the 2 positioning blocking posts 204 on the inner side, and the other 2 positioning blocking posts are positioned on the outer side of the left side of the Chinese character 'ji'. Simple structure and convenient positioning.
For the convenience of connection and fixation, the middle part of the connecting terminal 3 is provided with a lateral recess 304 and a positioning surface 303 positioned up and down, the positioning surface 303 is positioned below the recess 304, the lower part 301 of the connecting terminal is embedded into the terminal groove 201 and then is connected with the terminal groove 201 in a fastening fit manner, and the upper part 302 of the connecting terminal passes through the terminal positioning and fixing hole 108 and then is positioned with the terminal positioning and fixing hole 108 through the middle recess 304 and the positioning surface 303 of the connecting terminal 3. Through these location can make the fixed position of connecting terminal 3, also can not make the appearance structure of connecting terminal 3 take place obvious change, plays the guard action to connecting terminal 3, makes connecting terminal 3 play accurate centering and locking to the effect of plug-in components, and the side direction is sunken 304 not only can be located, has the function of stealing in addition, is convenient for assemble in place, connects fixedly convenience, simple structure, the technology is mature.
In order to make the terminal box 1 not easily displaced, 4 deformable sheets 105 are provided on the upper end surface of the terminal box middle plate 102, symmetrically provided on the left and right sides of the terminal box interface end 103. After the motor with reasonable number and positions and uniform deformation stress is assembled, the thin sheet 105 at the position is subjected to the force applied by the front end cover, and the thin sheet 105 is flexibly deformed, so that the force can be finally transmitted to the connecting terminal 3, the influence caused by accumulated tolerance can be eliminated, the terminal box 1 can not shift, the connection between the enameled wire and the connecting terminal 3 is very firm, and the enameled wire and the connecting terminal 3 can not be separated.
An electric machine includes a stator assembly that employs all of the structures of the above stator assembly. The safety distance between the adjacent connecting terminals 3 of the motor is large, the terminal box 1 is fixed in a buckle fixing mode, the terminal box 1 can be firmly fixed, the position and the appearance structure of the connecting terminals 3 are guaranteed under the force transmission effect through comprehensive positioning and the setting of the thin sheet 105, the enameled wires are firmly connected with the connecting terminals 3, separation cannot occur, the electrical property and the mechanical property of the connecting terminals 3 can be guaranteed, the safety and the firmness of the motor are effectively improved, and the service life of the motor is prolonged.
During manufacturing, the stator core 4 is inserted into the insulating framework 2 or the insulating framework 2 is injection molded on the basis of the stator core 4, then the coil is wound on the insulating framework 2, finally the connecting terminal 3 is tightly matched with the terminal groove 201 of the insulating framework 2, and the fixed connection part of the connecting terminal 3 and the terminal groove 201 is dripped with glue with a fixing effect; the terminal box 1 is matched and connected with the wiring terminal and the insulating framework 2 to form a stator assembly.
The stator assembly and the motor shown in fig. 1-6 are specific embodiments of the present invention, which have been shown to have substantial features and improvements, and the shape, structure, etc. of the stator assembly and the motor can be modified in an equivalent manner according to practical use requirements, and are all within the scope of protection of the present invention.