CN208386262U - Stator core bracket - Google Patents

Abstract

The utility model provides a kind of stator core bracket, the left support frame and right support frame of the Relative distribution on axle sleeve are mounted on including centre bore, the left support frame and right support frame radially angularly extend supporting rib to external radiation, the supporting rib is radially tilted to two sides from inside to outside, end point bending perpendicular to centre bore axis and is provided with caulking part on the outside of the supporting rib, caulking part is in close contact to form positioning surface in assembly with stator or so end face, riveted holes are provided on the caulking part, the riveting of the caulking part of stator left side and left support frame is fixed, the riveting of the caulking part of stator right side and right support frame is fixed.The utility model structure novel, integral strength is enhanced on the basis of identical material, occurs the defect of taper or ellipse when avoiding original stator core bracket stretch process simultaneously, otherwise for the stator of different-thickness, it only needs to use the rivet without length instead, it does not need to use mold instead, and saves raw material, reduce production cost.

Description

Stator core bracket

Technical field

The present invention relates to a kind of motor components, more particularly, to a kind of stator core bracket.

Background technique

With the continuous development of electric vehicle, electric vehicle is more more and more universal as green traffic tool, flat by original city etc. Smooth road conditions area is gradually promoted to the area of the complex road conditions such as the Duo Shan such as rural area, mountain area, more slopes, and it is some to be especially applied to rural area In terms of agricultural loading traffic, following problems occurred for some conventional electric cars in city in the past: motor power is insufficient, climbing nothing Power, can not heavy duty, the problems such as structural strength is insufficient when overloaded, low weight bearing ability seriously hinders electric vehicle in rural area, mountain area It uses and popularizes.

And important component of the stator core bracket of electric vehicle as a load-bearing, stator support is during the work time not only The continually changing torque of motor itself and electromagnetic force are born, still suffers from impact force when wheel hub is jolted, electric vehicle is certainly The gravity of body, the structural strength of its own is most important, and electric vehicle its stator core more than 300W power must be used at present Double bracket structure, bracket are thickness 1.2mm with upper steel plate, this is to inherently a kind of waste of material, so that manufacturing cost is high.

In addition, double bracket is riveted together for two brackets bears suffered external force jointly, on bracket outer peripheral surface It is inevitably present the angle R, as depicted in figs. 1 and 2, stator core is laminated by silicon steel sheet, and stator core was Cooperation of being full of is fitted on bracket outer ring, since the out-of-flatness of bracket outer peripheral surface will lead to stator core during press fitting Outer surface can be offset inward, this just will increase the air gap between stator and rotor, so that air gap increases, leakage field increases, and then leads No-load current is caused to increase, power output is reduced.

In addition, bracket is that raw material are directly process by drawing process, bracket is easy to be drawn during stretching It is stretched into taper or ellipse, causes stator outer circle and the irregular out-of-flatness of magnetic steel gap, so that non-uniform air-gap, causes motor The defect that vibration, rotary speed unstabilization, noise increase.

In addition, the motor of different capacity, the dimensional thickness of stator is different, the mold stretched for stator core bracket Difference, a secondary mold can only correspond to the stator core bracket an of gauge size, it is therefore desirable to be equipped with very more molds, cost Height, and manage and repair inconvenience.

Summary of the invention

In view of the above-mentioned problems, the present invention is intended to provide a kind of stator core bracket, by designing a kind of novel structure And be fixed on stator by way of riveting, occur taper or ellipse when avoiding original stator core bracket stretch process The defect of shape, while being directed to the stator of different-thickness, it is only necessary to it uses the rivet without length instead, does not need to use mold instead, And raw material can be saved.

The technical scheme is that a kind of stator core bracket, the Relative distribution on axle sleeve is mounted on including centre bore Left support frame and right support frame, the left support frame and right support frame radially angularly extend supporting rib to external radiation, described Supporting rib is radially tilted to two sides from inside to outside, and end point bending perpendicular to centre bore axis and is arranged on the outside of the supporting rib There is caulking part, caulking part is in close contact to form positioning surface in assembly with stator or so end face, is provided with riveting on the caulking part Connect hole, caulking part and stator left side the riveted holes riveting of the left support frame are fixed, the caulking part of the right support frame and fixed Sub- right side riveted holes riveting is fixed, and rivet is inserted into fixed in the riveted holes side of stator after the riveted holes on caulking part.

Preferably, the supporting rib is provided with reinforcing rib between adjacent two.

Preferably, the adjacent caulking part in end point is joined together to form connection by raw material on the outside of the supporting rib Portion is once stamped to form by stamping die.

Preferably, 90 ° of overturning bendings of lateral edge form positioning step, table in the positioning step and stator in the interconnecting piece Face contact positioning.

Preferably, the circular ring shape positioning region of protrusion is provided on the outside of the supporting rib, the circular ring shape positioning region, which is located at, to be connected Socket part and caulking part surface, the circular ring shape positioning region contact positioning with stator inner surface.

Preferably, the quantity of the supporting rib is 5 to 12.

Structure of the invention is novel, integral strength is enhanced on the basis of identical material, while avoiding original stator iron Occurs the defect of taper or ellipse when core support's stretch process, otherwise for the stator of different-thickness, it is only necessary to use instead not It with the rivet of length, does not need to use mold instead, and saves raw material, reduce production cost.

Detailed description of the invention

Fig. 1 is that existing stator core bracket installs the structural schematic diagram after stator；

Fig. 2 is the structural schematic diagram that stator generates deformation after press fitting in Fig. 1；

Fig. 3 is the structural schematic diagram of support frame in the first structure of the invention；

Fig. 4 be Fig. 3 along the direction A-A split after assemble complete when structural schematic diagram；

Fig. 5 is the partial structurtes enlarged drawing of Fig. 4；

Fig. 6 is the structural schematic diagram of support frame in second of structure of the invention；

Fig. 7 be Fig. 6 along the direction B-B split after assemble complete when structural schematic diagram；

Fig. 8 is the partial structurtes enlarged drawing of Fig. 7；

Fig. 9 is the structural schematic diagram of support frame in the third structure of the invention；

Figure 10 be Fig. 9 along the direction C-C split after assemble complete when structural schematic diagram；

Figure 11 is the partial structurtes enlarged drawing of Figure 10；

Figure 12 is the structural schematic diagram at another visual angle Fig. 9；

Figure 13 is the structural schematic diagram of support frame in the 4th kind of structure of the invention；

Figure 14 be Figure 13 along the direction D-D split after assemble complete when structural schematic diagram；

Figure 15 is the partial structurtes enlarged drawing of Figure 14；

Wherein: 1-axle sleeve；2-left support frames；3-right support frames；4-supporting ribs；5-caulking parts；6-riveted holes； 7-reinforcing ribs；8-interconnecting pieces；9-positioning steps；10-circular ring shape positioning regions.

Specific embodiment

With reference to the accompanying drawing, invention is further described in detail.

As shown in Figures 3 to 5, it the present invention provides a kind of stator core bracket, is mounted on axle sleeve 1 including centre bore The left support frame 2 and right support frame 3 of Relative distribution, the left support frame 2 and right support frame 3 are radial angularly to external radiation extension Supporting rib 4 out, the supporting rib 4 radially from inside to outside to two sides tilt, the 4 outside end point bending of supporting rib perpendicular to Centre bore axis is simultaneously provided with caulking part 5, and caulking part 5 is in close contact to form positioning surface in assembly with stator or so end face, institute It states and is provided with riveted holes 6 on caulking part 5, caulking part 5 and stator left side the riveted holes riveting of the left support frame 2 are fixed, institute The caulking part 5 and the riveting of stator right side riveted holes for stating right support frame 3 are fixed, and rivet is inserted after passing through the riveted holes 6 on caulking part 5 Enter fixed in the riveted holes side of stator.

Preferably, the supporting rib 4 is provided with reinforcing rib 7 between adjacent two, and the setting of reinforcing rib 7 is so that whole Body intensity further strengthens.

Preferably, as shown in Figure 6 to 8,2 He of left support frame of the Relative distribution on axle sleeve 1 is mounted on including centre bore Right support frame 3, the left support frame 2 and 3 radial direction of right support frame angularly extend supporting rib 4, the supporting rib 4 to external radiation It is radially tilted from inside to outside to two sides, the 4 outside end point bending of supporting rib is perpendicular to centre bore axis and is provided with riveting Socket part 5, caulking part 5 are in close contact to form positioning surface in assembly with stator or so end face, are provided with riveting on the caulking part 5 Hole 6, the caulking part 5 of the left support frame 2 and the riveting of stator left side riveted holes are fixed, the caulking part 5 of the right support frame 3 with Riveted holes riveting in stator right side is fixed, and rivet is inserted into solid in the riveted holes side of stator after the riveted holes 6 on caulking part 5 Fixed, the adjacent caulking part 5 in the 4 outside end point of supporting rib is joined together to form interconnecting piece 8, interconnecting piece 8 by raw material The region of a hollow out is surrounded between two adjacent supporting ribs 4, entire left support frame 2 and 3 global shape of right support frame are logical Stamping die is crossed once to be stamped to form.

Preferably, as shown in Fig. 9 to Figure 12,2 He of left support frame of the Relative distribution on axle sleeve 1 is mounted on including centre bore Right support frame 3, the left support frame 2 and 3 radial direction of right support frame angularly extend supporting rib 4, the supporting rib 4 to external radiation It is radially tilted from inside to outside to two sides, the 4 outside end point bending of supporting rib is perpendicular to centre bore axis and is provided with riveting Socket part 5, caulking part 5 are in close contact to form positioning surface in assembly with stator or so end face, are provided with riveting on the caulking part 5 Hole 6, the caulking part 5 of the left support frame 2 and the riveting of stator left side riveted holes are fixed, the caulking part 5 of the right support frame 3 with Riveted holes riveting in stator right side is fixed, and rivet is inserted into solid in the riveted holes side of stator after the riveted holes 6 on caulking part 5 Fixed, the adjacent caulking part 5 in the 4 outside end point of supporting rib is joined together to form interconnecting piece 8, interconnecting piece 8 by raw material The region of a hollow out is surrounded between two adjacent supporting ribs 4,8 inboard portion of interconnecting piece inwardly overturns folding along 90 ° Bending contacts positioning with stator inner surface at positioning step 9, the positioning step 9, and inner surface directly blocks when stator installs It closes on positioning step 9.

Preferably, as shown in FIG. 13 to 15, the left support frame 2 of the Relative distribution on axle sleeve 1 is mounted on including centre bore With right support frame 3, the left support frame 2 and 3 radial direction of right support frame angularly extend supporting rib 4, the support to external radiation Muscle 4 is radially tilted to two sides from inside to outside, and the 4 outside end point bending of supporting rib is perpendicular to centre bore axis and is provided with Caulking part 5, caulking part 5 are in close contact to form positioning surface in assembly with stator or so end face, are provided with riveting on the caulking part 5 Hole 6 is connect, caulking part 5 and stator left side the riveted holes riveting of the left support frame 2 are fixed, the caulking part 5 of the right support frame 3 It rivets and fixes with stator right side riveted holes, rivet is inserted into the riveted holes side of stator after passing through the riveted holes 6 on caulking part 5 Fixed, the adjacent caulking part 5 in the 4 outside end point of supporting rib is joined together to form interconnecting piece 8, interconnecting piece by raw material The region of a hollow out is surrounded between 8 and two adjacent supporting ribs 4, and the circular ring shape of protrusion is provided on the outside of the supporting rib 4 Positioning region 10, the circular ring shape positioning region 10 are located at 5 surface of interconnecting piece 8 and caulking part, the circular ring shape positioning region 10 and stator Inner surface contact positioning.

Preferably, the quantity of the supporting rib 7 is 5 to 12, and the quantity of certain supporting rib 7 is also possible to other Number.

The present invention changes the mode of existing stator core bracket outer circumference surface support stator inner surface, thus avoids The taper and oval deformation that stator core bracket is generated when stretching, also avoid the stator core branch of a thickness model The process and excircle of stretching is directly omitted in the mold of the corresponding model of frame, the relatively existing stator core bracket of the present invention The structure of face part has saved processing cost, while having saved raw material, when the motor in face of different capacity uses different rulers When the stator of very little thickness, it is only necessary to the length of corresponding rivet is selected, without still further selecting mold, versatility is good, and Entire left and right support frame can be produced by the way of stamping for processing above, and stamping production efficiency is high, and stamping Verticality is good, is not likely to produce deformation, and then improves the efficiency of motor.

The above is only better embodiment of the invention, not makes any form of restriction to invention, it is all according to According to technical principle any simple modification, equivalent variations or modification made to the above embodiment of the invention, the present invention is still fallen within In the range of technical solution.

Claims (6)

1. a kind of stator core bracket, it is characterised in that: be mounted on the left support of the Relative distribution on axle sleeve (1) including centre bore Frame (2) and right support frame (3), the left support frame (2) and right support frame (3) radially angularly extend supporting rib to external radiation (4), the supporting rib (4) radially tilts to two sides from inside to outside, and end point bending is perpendicular on the outside of the supporting rib (4) Heart axially bored line is simultaneously provided with caulking part (5), and caulking part (5) is in close contact to form positioning surface in assembly with stator or so end face, It is provided with riveted holes (6) on the caulking part (5), the caulking part (5) of the left support frame (2) and the riveted holes riveting of stator left side Fixation is connect, caulking part (5) and stator right side the riveted holes riveting of the right support frame (3) are fixed.

2. stator core bracket according to claim 1, it is characterised in that: the supporting rib (4) adjacent two it Between be provided with reinforcing rib (7).

3. stator core bracket according to claim 1, it is characterised in that: end point is adjacent on the outside of the supporting rib (4) Caulking part (5) be joined together to form interconnecting piece (8) by raw material, be once stamped to form by stamping die.

4. stator core bracket according to claim 3, it is characterised in that: described interior 90 ° of overturning foldings of lateral edge of interconnecting piece (8) Bending contacts positioning with stator inner surface at positioning step (9), the positioning step (9).

5. stator core bracket according to claim 3, it is characterised in that: be provided with protrusion on the outside of the supporting rib (4) Circular ring shape positioning region (10), the circular ring shape positioning region (10) is located at interconnecting piece (8) and caulking part (5) surface, the annulus Shape positioning region (10) contacts positioning with stator inner surface.

6. stator core bracket according to claim 1, it is characterised in that: the quantity of the supporting rib (4) is 5 to 12 It is a.