CN205017142U - Permanent magnet DC motor - Google Patents
Permanent magnet DC motor Download PDFInfo
- Publication number
- CN205017142U CN205017142U CN201520132974.5U CN201520132974U CN205017142U CN 205017142 U CN205017142 U CN 205017142U CN 201520132974 U CN201520132974 U CN 201520132974U CN 205017142 U CN205017142 U CN 205017142U
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- China
- Prior art keywords
- permanent magnet
- motor
- assembly
- motor according
- end panel
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a permanent magnet DC motor, including stator assembly, rotor assembly and back lid assembly, wherein, the rotor assembly is located in the inside cavity of stator assembly, back lid assembly is including connecting at the terminal back lid body of stator assembly, back lid body includes the terminal panel of front end ring sum, the front end ring sum link to each other through the strengthening rib between the terminal panel, preceding end links, terminal panel and strengthening rib enclose into the cavity jointly, are equipped with the window between the strengthening rib, the cavity passes through the window intercommunication is outside, preceding end links with the stator assembly is connected. Permanent magnet DC motor's back lid assembly have materials and economize, ventilate, dispel the heat soon, make things convenient for accommodate motor center and motor just to reverse, clear up easily advantages such as carbon dust dirt, and, the utility model discloses permanent magnet DC motor is applicable to the direct current motor of various low -voltage heavy currents, especially tombarthite permanent magnet DC motor.
Description
Technical field
The utility model relates to a kind of permanent magnet DC motor, particularly relates to a kind of good heat dissipation, clear powder permanent magnet DC motor easily.
Background technology
Permanent magnet DC motor is the DC motor being set up magnetic field by permanent magnet, its performance is similar to the DC motor with separate excitation of constant excitation megnet electric current, speed governing easily can be carried out by change armature voltage, but compared with separated exciting DC motor, permanent magnet DC motor has the advantages such as volume is little, efficiency is high, structure is simple, copper consumption is few, is widely used in various electronic equipment or the industry such as utensil and automobile, motorcycle, electric bicycle, battery car, boats and ships, aviation, machinery.
Permanent magnet DC motor general structure comprises field frame assembly, rotor assembly, rear cover assembly successively, and in bearing or axle sleeve embedded axle bearing, activity is connected.Permanent magnet DC motor disclosed in CN1684338A, CN101217246A, casing internal is provided with stators and rotators, and stator end end cap (bonnet) closes.Wherein, first generation rare earth permanent magnetic dc motor bonnet is solid bonnet, and namely structure is totally enclosed type, and materials are many, cost is high, carbon dust is difficult to cleaning.
CN202424371U discloses a kind of magneto bonnet, comprises bearing pedestal, carbon brush holder, bearing and rear cover body, bearing pedestal and bearing or axle sleeve integrated injection molding.Thus simplified structure technique greatly, general structure is more exquisite, saves metal material.
CN203674849U discloses a kind of permanent magnet DC motor bonnet of plastics single injection-molded, comprise the body of axle room and base plate composition, the equidistant ring of axle chamber interior walls establishes convex tendon, and outer wall and plate outer side interval arrange oblique reinforcement gusset, and axle room and base plate center are provided with axis hole.Decrease the use of non-ferrous metal.
But above-mentioned magneto bonnet is of limited application, and the problems such as heat radiation is slow, difficult clear powder cannot be solved.Along with society, the reach of science, more and more field adopts low voltage high current motor, and Traditional DC motor rear cover has been difficult to meet the demands.
Utility model content
The problem high for the cost existing for current direct current machine rear cover assembly, heat radiation is slow, difficulty is cleared up, the utility model provides a kind of novel direct current machine.
Permanent magnet DC motor provided by the utility model comprises field frame assembly, rotor assembly and rear cover assembly, and wherein, rotor assembly is positioned at the internal chamber of described field frame assembly; Rear cover assembly comprises the bonnet body being connected to field frame assembly end, described bonnet body comprises front end ring and end panel, be connected by reinforcement between described front end ring and described end panel, front end ring, end panel and reinforcement surround chamber jointly, be provided with window between reinforcement, described chamber is communicated with outside by described window; Front end ring is connected with described field frame assembly.
Wherein, described reinforcement quantity can be at least 2, and as 3,4, its quantity is unrestricted in the utility model.
Wherein, described end panel is provided with the hole running through described end panel both sides, and wherein, described hole at least comprises around described end panel center and the arcuate socket being the center of circle with described center; More preferably, be provided with the first hole in described face plate center, at least one arcuate socket is set around described first hole.
Wherein, insert screw in arcuate socket, the radian of described arcuate socket can allow described screw to prolong arcuate socket radian to move.Wherein, described screw is preferably hole countersunk unit head screw.
Wherein, described end panel is also provided with wire delivery outlet and/or wire output channel, described wire delivery outlet and/or wire output channel are preferably positioned at the edge of described end panel.
In a kind of preferred embodiment of the present utility model, described rear cover assembly also comprises carbon brush holder; Described carbon brush holder comprises the ring-type support body that center is through hole, and a surface of the ring of ring-type support body is provided with carbon brush; And the intrinsic cavity of described bonnet can hold a described carbon brush holder.
More preferably, described carbon brush holder is at the back side on surface being provided with carbon brush, and be provided with fixing hole, the screw in described arcuate socket is inserted in described fixing hole further.
More preferably, described end panel inner surface is formed with a groove caved in, and more preferably, described groove is the groove that can hold a described carbon brush holder.
Wherein, described carbon brush holder quantity can be one or more.Wherein, described carbon brush holder can be same size, also can be different size, and described specification can be the requirement of material, shape, size.In the utility model, the carbon brush of described carbon brush holder preferably multiple (>=2 kinds) different size.
In a kind of preferred embodiment of the present utility model, carbon brush holder described in one of them is arranged on one end of the close end panel of described bonnet Body Lumen.More preferably, a described carbon brush holder is placed in the groove of end panel.
Wherein, more preferably, the ring-type support body of described carbon brush holder forms the ladder raised step by step from inside to outside, and described carbon brush is arranged on the top of described ladder.
In a kind of preferred embodiment of the present utility model, described rear cover assembly also comprises and surrounds this external cover of described bonnet.Preferably, described cover surrounds the sidepiece of rear cover assembly.
Wherein, described cover preferably runs through the tubular structure at two ends.
In a kind of more preferred embodiment, the barrel of described cover is sealed wall, namely not containing obvious visible hole.
In another kind of more preferred embodiment, the barrel of described cover is provided with air-vent.
In a kind of more preferred embodiment, described cover is formed by the docking of tablet head and the tail, is connected between head and the tail by link.
Wherein, described link can be any one or a few in fixed connecting part, detachable connection part, is more preferably detachable connection part.Wherein, described detachable connection part is preferably fastened and connected parts.
More preferably, described locked part comprises the stator being positioned at tail end and the foldable sheet being positioned at head end, wherein, described stator is provided with the protuberance to cover extension, described foldable sheet comprise standing part and and described standing part between the movable part that is rotatably connected, described movable part is provided with gap, and described protuberance is inserted in institute gap.
Wherein, described protuberance can be the combination of any one or a few the shape in ring-type, shaft-like, sheet, and more preferably described protuberance is provided with perforation, and as being provided with perforation in sheet or shaft-like protuberance, being more preferably described protuberance is ring-type.
Wherein, the movable part of described foldable sheet preferably comprises at least two joint structures, and first segment and described standing part are rotatably connected, collapsible between adjacent each joint; Final section is located in described gap.
Wherein, can also comprise in sealing gasket, sealing ring between described cover and described bonnet body any one or a few.
In a kind of preferred embodiment of the present utility model, described bonnet also comprises shrouding, and described shrouding at least in the rear lid body outer surface covers the hole in described end panel.
Should be understood that, the above-mentioned various preferred embodiment of the utility model, more preferred embodiment can carry out unrestricted combination in any by those skilled in the art, and described combination is also in the scope of the utility model content.
Rear cover assembly in permanent magnet DC motor described in the utility model has that materials are economized, ventilated, rapid heat dissipation, conveniently regulate the advantage such as motor center position and motor positive and inverse, easily cleaning carbon dust, and permanent magnet DC motor of the present utility model is applicable to the direct current machine of various low-voltage and high-current, especially rare earth permanent magnetic dc motor.
Accompanying drawing explanation
Fig. 1 is the utility model permanent magnet DC motor structural representation;
Fig. 2 A and 2B is the perspective view of the rear cover assembly different directions of permanent magnet DC motor in a kind of embodiment of the utility model;
Fig. 3 is carbon brush structure schematic diagram in a kind of embodiment of the utility model;
Fig. 4 is card cover structure schematic diagram in a kind of embodiment of the utility model;
Fig. 5 is arcuate socket structural representation in a kind of embodiment of the utility model;
Fig. 6 is motor end shrouding schematic diagram in a kind of embodiment of the utility model.
Embodiment
Below in conjunction with accompanying drawing, by specific embodiment the utility model to be described in detail and to illustrate, but following embodiment can not be interpreted as the restriction to the utility model scope.
With reference to Fig. 1, the utility model permanent magnet DC motor comprises rear cover assembly 100, field frame assembly 200 and rotor assembly 300.Wherein, field frame assembly 200 is open-ended tubular, and rotor assembly 300 is positioned at field frame assembly 200 internal cavities.Rear cover assembly 100 is connected with field frame assembly at the end of field frame assembly 200 opening.
With reference to 2A and Fig. 2 B, the structure of the bonnet body 1 of the rear cover assembly 100 of the utility model permanent magnet DC motor is as follows: connected by reinforcement 15 between end panel 11 and front end ring 12, be arranged in parallel between front end ring 12 and end panel 11, the two ends of reinforcement 15 are connected to the edge of front end ring 12 and end panel 11.
As shown in Figure 2 A and 2 B, surround a cavity 10 between front end ring 12, end panel 11 and reinforcement 15, form window between neighbour reinforcement 15, the chamber surrounded is communicated with outside by described window.At the edge of end panel 11, be provided with wire output channel 17.
Front end ring 12 is provided with installs fixing hole 14, the end of field frame assembly 200 opening is provided with perpendicular to the outward extending extension of field frame assembly cylindrical shell, fixed by screw between extension and front end ring, thus described bonnet body is installed on DC motor stator assembly 200.
Wherein, as shown in Figure 1, end panel 11 center is provided with circular hole 16, around described circular hole 16, be provided with two long arc-shaped holes 13, as shown in Figure 5, the length of long arc-shaped holes 13 is obviously greater than the diameter of hole countersunk unit head screw 5, therefore, hole countersunk unit head screw 5 can do relative motion in arc conventional track.
Carbon dust brush holder 3 is positioned at the internal chamber 10 that bonnet body 1 surrounds, and is arranged on the one end (as shown in Figure 2 B) near end panel 11.With reference to Fig. 3, carbon brush holder 3 is circulus, and center is provided with through hole 30, and centered by described through hole 30, form the hierarchic structure 31 raised step by step from inside to outside, carbon brush 32 is arranged on the top of hierarchic structure 21.In the utility model, the carbon brush holder 32 that a kind of specification is consistent can be only had, or carbon brush holder 32 can be arranged to a set of carbon brush holder of different size, selects corresponding carbon brush holder according to the size of current of direct current machine.
Carbon dust brush part 3 is provided with fixing hole towards the one side of end panel 11, hole countersunk unit head screw 5 is inserted in fixing hole further, when hole countersunk unit head screw 5 does relative motion in arc track, the position of adjustment carbon dust brush holder 3 can be rotated, can be easy to regulate motor positive and inverse without the need to loosening bonnet, adjusted position postpone, tightens fixing by hole countersunk unit head screw 5.
Because the utility model adopts hollow bonnet body, and bonnet body side forms multiple window being communicated with outside, and therefore, materials are economized, rapid heat dissipation.
In addition, in order to safety, can hold a cover 4 at the sidewall of bonnet body 1, as shown in Figure 4, the utility model provides two kinds of covers 4, and one is closed (Fig. 4 A), and another kind is open (Fig. 4 B).Cover 4 forms tubular by after the docking of rectangular pieces head and the tail, and cover tightens up rear fixing by the fastening structure of joint.
Fastening structure comprises fixed head 42 and portable plate.Fixed head 42 is fixed on tail end, and is provided with outwardly directed horizontal loops.Portable plate comprises three parts connected successively: standing part 410, coupling part 411 and end segment parts 412, wherein, standing part 410 is fixed on head end, and standing part is rolled near the vertical edge towards fixed head 412 and is formed tubular or half tubular structure, a limit of quadrangle coupling part 411 be enclosed within roll and formed in tubular or half tubular structure, thus form rotatable or folding connection; Collapsible between end section 412 and coupling part 411, and end section is provided with transverse slot, and after fastening, the horizontal loops of fixed head 42 passes in described gap, afterwards, inserts in horizontal loops locked by parts such as locks.
Wherein, the cylindrical sidewall of open cover 4 can be provided with a large amount of air-vents, as shown in Figure 4 B.In this case, without the need to dismounting, carbon dust can be removed easily, remain the advantage of rapid heat dissipation simultaneously, be applicable to operational environment better, anhydrous, without oil, place without pollutants such as dust.
Wherein, there is not obvious hole in enclosed cover 4 sidewall sealing, cover 4 can be guaranteed to pull down easily by fastening structure, thus conveniently remove carbon dust, by time enclosed cover 4 can prevent entering of external dust, water and wet goods pollutant, be applicable to common workplace.In addition, because bonnet body 1 itself can play support effect, cover 4 does not need to bear support function, only needs thinner material to make, can retain radiating effect.
Therefore, the utility model is without the need to pulling down the cleaning can carrying out carbon dust by bonnet.
In addition, for the place that there is dust, water or wet goods pollutant, in order to avoid entering of pollutant, the outer surface of end panel 11 is provided with shrouding 2, as shown in Figure 6, shrouding 2 is rectangle, the perforate in the end panel 11 such as arcuate socket 13, central through hole 1 can be carried out capping, do not need too large area, four drift angle places arrange screw and are fixed.This structure can coordinate enclosed cover to use, and when using open cover, does not generally need to change capping.
Be described in detail specific embodiment of the utility model above, but it is as example, the utility model is not restricted to specific embodiment described above.To those skilled in the art, any equivalent modifications that this practicality is carried out and substituting also all among category of the present utility model.Therefore, not departing from the equalization conversion and amendment done under spirit and scope of the present utility model, all should be encompassed in scope of the present utility model.
Claims (10)
1. a permanent magnet DC motor, is characterized in that, field frame assembly, rotor assembly and rear cover assembly, and wherein, rotor assembly is positioned at the internal chamber of described field frame assembly; Rear cover assembly comprises the bonnet body being connected to field frame assembly end, described bonnet body comprises front end ring and end panel, be connected by reinforcement between described front end ring and described end panel, front end ring, end panel and reinforcement surround chamber jointly, be provided with window between reinforcement, described chamber is communicated with outside by described window; Front end ring is connected with described field frame assembly.
2. permanent magnet DC motor according to claim 1, it is characterized in that, described end panel is provided with the hole running through described end panel both sides, wherein, the first hole is provided with in described face plate center, arrange at least one arcuate socket around described first hole, insert screw in arcuate socket, the radian of described arcuate socket can allow described screw to prolong arcuate socket radian to move.
3. permanent magnet DC motor according to claim 1, is characterized in that, described rear cover assembly also comprises carbon brush holder; Described carbon brush holder comprises the ring-type support body that center is through hole, and a surface of the ring of ring-type support body is provided with carbon brush; And the intrinsic cavity of described bonnet can hold a described carbon brush holder.
4. permanent magnet DC motor according to claim 3, is characterized in that, described end panel inner surface is formed with a groove caved in.
5. permanent magnet DC motor according to claim 4, is characterized in that, described groove is the groove that can hold a described carbon brush holder.
6. permanent magnet DC motor according to claim 1, is characterized in that, described rear cover assembly also comprises and surrounds this external cover of described bonnet, and described cover is for running through the tubular structure at two ends.
7. permanent magnet DC motor according to claim 6, is characterized in that, the barrel of described cover is sealed wall, or described barrel is provided with air-vent.
8. permanent magnet DC motor according to claim 6, is characterized in that, described cover is formed by the docking of tablet head and the tail, is connected between head and the tail by link.
9. permanent magnet DC motor according to claim 8, is characterized in that, described link is the parts that are fastened and connected.
10. permanent magnet DC motor according to claim 1, is characterized in that, described bonnet also comprises shrouding, and described shrouding at least in the rear lid body outer surface covers the hole in described end panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520132974.5U CN205017142U (en) | 2015-03-09 | 2015-03-09 | Permanent magnet DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520132974.5U CN205017142U (en) | 2015-03-09 | 2015-03-09 | Permanent magnet DC motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205017142U true CN205017142U (en) | 2016-02-03 |
Family
ID=55215724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520132974.5U Expired - Fee Related CN205017142U (en) | 2015-03-09 | 2015-03-09 | Permanent magnet DC motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205017142U (en) |
-
2015
- 2015-03-09 CN CN201520132974.5U patent/CN205017142U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160203 Termination date: 20210309 |