Electrical machine insulation pad and motor assembling structure thereof
[technical field]
The utility model relates to electrical machine insulation pad and adopts the motor assembling structure of this electrical machine insulation pad.
[background technology]
The existing motor be applied on washing machine, all needs design electrical machine insulation device when mounted, thus effectively can prevent motor ground short circuit and by motor burning.The electrical machine insulation device of prior art generally includes the insulating part of two splits, has that cost of parts is high, assembly technology is many, the problem that efficiency of assembling is on the low side.
[utility model content]
Problem to be solved in the utility model is just to provide a kind of electrical machine insulation pad and motor assembling structure thereof, easy to assembly, effectively improves efficiency of assembling.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
Electrical machine insulation pad, is characterized in that comprising:
First insulation spacer, described first insulation spacer is provided with the first through hole;
Second insulation spacer; Described second insulation spacer is provided with the second through hole, and the second through hole is corresponding with the first through hole;
Bent connecting portion, the first insulation spacer and the second insulation spacer are connected as one by described connecting portion, and the first insulation spacer can be relative folding with the second insulation spacer.
Electrical machine insulation pad of the present utility model, comprise the first insulation spacer and the second insulation spacer, by bent connecting portion, first insulation spacer and the second insulation spacer are connected as one, and the first insulation spacer can be relative folding with the second insulation spacer, the program is than electrical machine insulation device split type at present, and cost of parts is low, effectively reduce assembly work, improve efficiency of assembling.
Wherein, first gear muscle is arranged with outside described first insulation spacer upper surface.Improve minimum electric clearance and creepage distance, increase fail safe.
Wherein, second gear muscle is arranged with outside described second insulation spacer upper surface.Improve minimum electric clearance and creepage distance, increase fail safe.
Wherein, the first insulation spacer upper surface is provided with the first isolation bar arranged around the first through hole.Improve minimum electric clearance and creepage distance, increase fail safe.
Wherein, the second insulation spacer lower surface is provided with the groove mated with the first isolation bar, and under the first insulation spacer and the second insulation spacer folded state, the first isolation bar end is stretched in groove.Ensure fitting tightly of the second insulation spacer lower surface and the first insulation spacer upper surface and motor coupling portion position, increase contact area, when practical set, bolt tightening moment can be improved, improve assembly quality.
Wherein, two insulation spacer lower surfaces are provided with the second isolation bar arranged around the second through hole, and under the first insulation spacer and the second insulation spacer folded state, the second isolation bar end is stretched in the first through hole.Improve minimum electric clearance and creepage distance, increase fail safe.
Wherein, described first insulation spacer is provided with the buckle of maintenance first insulation spacer and the second insulation spacer folded state.Improve operation ease.
Wherein, described connecting portion is provided with thin-walled band.Be convenient to connecting portion bending, handled easily.
The utility model also proposes a kind of motor assembling structure, comprise motor, supporting plate, motor bolt and electrical machine insulation pad, described motor is provided with rear end cap, described electrical machine insulation pad to be installed on rear end cap and to be fixed on supporting plate by motor bolt-locking, and described electrical machine insulation pad is the electrical machine insulation pad described in above-mentioned arbitrary technical scheme.
Wherein, also comprise locking insulation spacer, described locking insulation spacer is held between electrical machine insulation pad and supporting plate.
These features of the present utility model and advantage will embodiment below, exposure detailed in accompanying drawing.
[accompanying drawing explanation]
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is the structural representation (deployed condition) of electrical machine insulation pad in the utility model preferred embodiment;
Fig. 2 is the structural representation (folded state) of electrical machine insulation pad in the utility model preferred embodiment;
Fig. 3 is the solid assembling schematic diagram of electrical machine insulation pad, motor, supporting plate in the utility model preferred embodiment;
Fig. 4 is the sectional arrangement drawing of electrical machine insulation pad, motor, supporting plate in the utility model preferred embodiment;
Fig. 5 is the A place partial enlarged drawing of Fig. 4.
[embodiment]
The technical scheme of accompanying drawing to the utility model embodiment below in conjunction with the utility model embodiment is explained and illustrated, but following embodiment is only preferred embodiment of the present utility model, and not all.Based on the embodiment in execution mode, those skilled in the art under the prerequisite not making creative work obtain other embodiments, all belong to protection range of the present utility model.
With reference to Fig. 1,2, the electrical machine insulation pad of the utility model preferred embodiment, comprises the first insulation spacer 1, and the first insulation spacer 1 is provided with the first through hole 10; Second insulation spacer 2, the second insulation spacer 2 is provided with the second through hole 20, second through hole 20 corresponding with the first through hole 10; Bent connecting portion 3, first insulation spacer 1 and the second insulation spacer 2 are connected as one by connecting portion 3, and the first insulation spacer 1 can be relative folding with the second insulation spacer 2.Specifically, first insulation spacer 1, second insulation spacer 2 and connecting portion 3 are plastic parts, integrative-structure is formed by injection moulding, connecting portion 3 is located at the strip-shaped members between the first insulation spacer 1 and the second insulation spacer 2, its thickness is thin compared with the first insulation spacer 1, second insulation spacer 2, so can be bent.Bend for convenience of connecting portion 3, the present embodiment arranges groove in the centre position of connecting portion 3, and form thin-walled band 31, thin-walled band 31 is thinner compared with connecting portion 3 remainder thickness, and preferably thin-walled band 31 thickness is 0.8mm ~ 1.0mm, so it can be facilitated to bend.
In other embodiments of the utility model, the first insulation spacer and the second insulation spacer also can adopt existing its feature insulating material known to make, such as rubber.
Composition graphs 3-5, in motor assembling structure, comprise motor 5, supporting plate 4, motor bolt 6 and above-mentioned electrical machine insulation pad, motor 5 is provided with rear end cap 51, this rear end cap 51 is provided with protuberance 511 and is convenient to mounted motor insulation cushion, electrical machine insulation pad to be installed on rear end cap 51 and to be locked on supporting plate 4 by motor bolt 6, fix for convenience of bolt, electrical machine insulation pad is installed to after on rear end cap 51 needs pre-determined bit, the present embodiment arranges a pair buckle 13 on the first insulation spacer 1, rear end cap protuberance 511 is arranged and dodges hole 512 and third through-hole 513, during concrete enforcement: the below the first insulation spacer 1 being placed in rear end cap protuberance 511, buckle 13 dodges hole 512 through rear end cap protuberance 511, again the second insulation spacer 2 is inwardly folded, until buckle 13 fastens to the upper surface of the second insulation spacer 2, electrical machine insulation pad is so made to obtain pre-determined bit on rear end cap 51, finally, by motor bolt 6 from top to bottom successively through the second through hole 20, third through-hole 513, be locked to after first through hole 10 on supporting plate 4, realize fixing.
After the present embodiment electrical machine insulation pad is locked, upper surface and rear end cap protuberance 511 lower surface of the first insulation spacer 1 fit tightly, and lower surface and rear end cap protuberance 511 upper surface of the second insulation spacer 2 fit tightly.Design like this, increases the first insulation spacer 1, second insulation spacer 2 and the contact area of back end cover for motor 51, effectively improves lifting surface area when motor bolt 6 is tightened, thus improve motor bolt 6 screw-down torque, improve assembly quality.
For improving fail safe, the present embodiment have employed following preferred version: arrange the first block reinforcement 11 in the first insulation spacer 1 upper surface periphery, second gear muscle 21 is arranged with outside the second insulation spacer 2 upper surface, if first insulation spacer 1 of the present embodiment and the second insulation spacer 2 are the shape coordinating rear end cap 51 protuberance 511, all be designed to trapezoidal, above-mentioned first block reinforcement 11 is arranged along the first insulation spacer 1 upper surface outline, but does not close, so that install; The second above-mentioned block reinforcement 21 surrounds kidney slot, and after motor bolt 6 is tightened, 6, motor bolt is positioned at kidney slot at least partly.Because the first block reinforcement 11 exceeds the first insulation spacer 1 upper surface, the second block reinforcement 21 exceeds the second insulation spacer 2 upper surface, between motor bolt 6 and motor 5, done isolation design, effectively improves the two minimum electric clearance and creepage distance.Certainly, those skilled in the art can design the first insulation spacer and the second insulation spacer according to the shape of real electrical machinery rear end cap, are only that adaptive change all should within protection range of the present utility model in shape.
Preferred scheme: the first isolation bar 12, second insulation spacer 2 lower surface that the present embodiment is also arranged around the first through hole 10 at the first insulation spacer 1 upper surface is provided with the second isolation bar 22 arranged around the second through hole 20; First isolation bar 12 and the second isolation bar 22 are closed-loop structure; Under first insulation spacer 1 and the second insulation spacer 2 folded state, first isolation bar 12 and the second isolation bar about 22 interlock, second isolation bar 22 end is stretched in the first through hole 10, design like this, coordinate aforesaid first block reinforcement 11 and the second block reinforcement 21, more effectively can improve the minimum electric clearance between motor bolt 6 and motor 5 and creepage distance, optimize safety structure.
According to the design of above-mentioned security scheme, those skilled in the art are easy to expect: the first insulation spacer and/or the second insulation spacer can also arrange the structure of two groups or block reinforcement more than two or similar block reinforcement, to improve electrical security.
The present embodiment also arranges the groove 23 mated with the first isolation bar 12 at the second insulation spacer 2 lower surface, under first insulation spacer 1 and the second insulation spacer 2 folded state, first isolation bar 12 end is stretched in groove 23 through third through-hole 513, make the first insulation spacer 1 more tight with coordinating of the second insulation spacer 2, guarantee that upper surface and rear end cap protuberance 511 lower surface of the first insulation spacer 1 fit tightly simultaneously, lower surface and rear end cap 51 protuberance 511 times upper surfaces of second insulation spacer 2 fit tightly, therebetween interference can not be produced because of the setting of isolation bar.
For improving motor 5 stability maintenance, the present embodiment also adds locking insulation spacer 7 between electrical machine insulation pad and supporting plate 4, during practical application, first locking insulation spacer 7 can be bonded in the first insulation spacer 1 lower surface, after motor bolt 6 is locked, locking insulation spacer 7 is held between the first insulation spacer 1 and supporting plate 4.Locking insulation spacer 7 is generally rubber or silica gel pad, increases frictional force, avoids rear end cap 51 to install rear generation and loosens, thus improve motor 5 stability maintenance, can also strengthen the pretightning force of motor bolt 6.
The utility model embodiment is applied to washing machine usually, as rotary drum washing machine, roller washing machine etc.
The above; be only embodiment of the present utility model; but protection range of the present utility model is not limited thereto, is familiar with this those skilled in the art and should be understood that the content that the utility model includes but not limited to accompanying drawing and describes in embodiment above.Any amendment not departing from function and structure principle of the present utility model all will comprise within the scope of the appended claims.