CN204316221U - The assembly structure of DC permanent magnet brush motor - Google Patents
The assembly structure of DC permanent magnet brush motor Download PDFInfo
- Publication number
- CN204316221U CN204316221U CN201420868002.8U CN201420868002U CN204316221U CN 204316221 U CN204316221 U CN 204316221U CN 201420868002 U CN201420868002 U CN 201420868002U CN 204316221 U CN204316221 U CN 204316221U
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- CN
- China
- Prior art keywords
- screw
- lock screw
- pilot hole
- locating piece
- shell
- Prior art date
- 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.)
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Abstract
The utility model relates to the assembly structure of DC permanent magnet brush motor, comprise stators and rotators, stator comprises shell and is arranged on front end housing and the rear end cap at shell two ends, lock screw is connected with between front end housing and rear end cap, front end housing is provided with the screw coordinated with lock screw, two relative magnet steel are provided with at the inwall of shell, the gap passed for lock screw is formed between two magnet steel, also comprise the locating piece be arranged in described gap, locating piece offers the pilot hole in order to guiding locking screw, pilot hole and screw are coaxially arranged, lock screw is through described pilot hole.Like this, lock screw is from the rear end cap process that end cap wears forward, by the guiding of location hole on locating piece, lock screw in prior art can be avoided to be subject to the effect of magnetic force through during gap two magnet steel and to offset, lock screw can screw togather with the screw on front end housing easily through after pilot hole, thus makes the assembling of front end housing and rear end cap convenient.
Description
Technical field
The utility model belongs to electric motors, is specifically related to the assembly structure of DC permanent magnet brush motor.
Background technology
DC permanent magnet brush motor is widely used in the fields such as household electrical appliances, medical treatment, automobile, industry.Permanent-magnet DC brush motor generally includes stator module and rotor (not shown), and stator generally includes the shell of hollow and is arranged on the end cap of stator end, and rotor is installed in rotation in stator by the endcap support of stator.End cap is provided with brush, and the rotating shaft of stator is provided with commutator, brush and commutator coordinate the sense of current for converting armature rotor.In existing a kind of DC permanent magnet brush electric machine structure, as shown in Figure 4, be provided with front end housing 5 and rear end cap 1 at the two ends of shell 2, the inwall of shell 2 is provided with two magnet steel 4, and lock screw 3 by the gap between two magnet steel 4, is connected to front end housing 5 from rear end cap 1.Adopt the brush motor of this structure, due to the impact of the magnetic force of magnet steel 4, lock screw 3 wears the process of front end housing 5 from rear end cap 1, in the gap between two magnet steel 4, the effect making lock screw 3 be subject to radial magnetic force offsets, be difficult to aim at the screw on front end housing 5, therefore assembly difficulty strengthens, time-consuming.
Given this, the present inventor carries out deep research to the problems referred to above, then has this case to produce.
Utility model content
The purpose of this utility model is the assembly structure providing a kind of DC permanent magnet brush motor facilitating end cap to assemble.
In order to achieve the above object, the utility model adopts such technical scheme:
The assembly structure of DC permanent magnet brush motor, comprise stators and rotators, stator comprises shell and is arranged on front end housing and the rear end cap at shell two ends, lock screw is connected with between front end housing and rear end cap, front end housing is provided with the screw coordinated with lock screw, two relative magnet steel are provided with at the inwall of shell, the gap passed for lock screw is formed between two magnet steel, also comprise the locating piece be arranged in described gap, locating piece offers the pilot hole guiding described lock screw, pilot hole and described screw are coaxially arranged, described lock screw is through described pilot hole.
Further, described pilot hole is provided with the first guide portion near one end of described rear end cap, the first lead-in curve that the first guide portion comprises the second end on the first end be connected with the inwall of described pilot hole, the end face being arranged on described locating piece and is connected between first end and the second end.
Further, described screw is provided with the second guide portion near one end of described locating piece, the second guide portion comprise the 3rd end be connected with the inwall of described screw, the end being arranged on described screw the 4th end and be connected the second fillet surface of the 3rd end and the 4th end.
In such scheme, described locating piece is provided with limit convex grain near the side of described shell, and described shell offers the spacing hole corresponding with limit convex grain.
After adopting the technical solution of the utility model, lock screw is from the rear end cap process that end cap wears forward, by the guiding of location hole on locating piece, lock screw in prior art can be avoided to be subject to the effect of magnetic force through during gap two magnet steel and to offset, lock screw can screw togather with the screw on front end housing easily through after pilot hole, thus makes the assembling of front end housing and rear end cap convenient.
Accompanying drawing explanation
Fig. 1 structural representation of the present utility model (rotor is not shown);
Fig. 2 is the enlarged drawing at A place in Fig. 1;
Fig. 3 is the enlarged drawing at B place in Fig. 1;
Fig. 4 is the assembly structure of DC permanent magnet brush motor in prior art.
In Fig. 1 to Fig. 3:
11-shell 12-front end housing
13-rear end cap 14-magnet steel
20-lock screw 30-locating piece
31-pilot hole 331-first end
332-First Transition curved surface 333-second end
32-limit convex grain 111-spacing hole
121-screw 1231-the 3rd end
1232-second fillet surface 1233-the 4th end
In Fig. 4:
1-rear end cap 2-shell
3-lock screw 4-magnet steel
5-rear end cap 6-screw
Embodiment
In order to explain the technical solution of the utility model further, be described in detail below in conjunction with accompanying drawing.
Referring to figs. 1 through Fig. 3, the assembly structure of DC permanent magnet brush motor, comprise stators and rotators (not shown), stator comprises shell 11 and is arranged on front end housing 12 and the rear end cap 13 at shell 11 two ends, lock screw 20 is connected with between front end housing 12 and rear end cap 13, front end housing 12 is provided with the screw 121 coordinated with lock screw 20, and lock screw 20, is threaded in screw 121 from rear end cap 13 to realize the connection between front end housing 12 and rear end cap 13 through afterwards.Two relative magnet steel 14 are provided with at the inwall of shell 11, the gap passed for lock screw 20 is formed between two magnet steel 14, in order to the movement of guiding locking screw 20 in gap better, the utility model also comprises the locating piece 30 be arranged in described gap, locating piece 30 is arranged along the axial direction of shell 11, locating piece 30 along the length of shell 11 axis close to the length of magnet steel 14 along shell 11 axis.Locating piece 30 offers the pilot hole 31 guiding described lock screw 20, pilot hole 31 and described screw 121 are coaxially arranged, the diameter of pilot hole 31, slightly larger than the diameter of lock screw, is just screwed in screw 121 after lock screw 20 passes described pilot hole 31.In an embodiment, described locating piece 30 is provided with limit convex grain 32 near the side of described shell 11, described shell 11 offers the spacing hole 111 corresponding with limit convex grain 32, by coordinating of limit convex grain 32 and spacing hole 111, locating piece 30 is fixed on shell 11, avoids locating piece 30 skew occurs and causes the dislocation of pilot hole 31 and screw 121.
In order to the movement of guiding locking screw 20 better, as further improvement of the utility model, described pilot hole 31 is provided with the first guide portion 33 near one end of described rear end cap 13, first guide portion 33 is formed directly on locating piece 30, the first lead-in curve 332 that the first guide portion 33 comprises the second end 333 on the first end 331 be connected with the inwall of described pilot hole 31, the end face being arranged on described locating piece 30 and is connected between first end 331 and the second end 333.The bore of the second end 333 is greater than the bore of first end 331, first guide portion 33 like this is formed and is similar to part pyramid like configuration, when lock screw 20 moves to locating piece 30 from rear end cap 13, even if the central axis of lock screw 20 offsets the central axis of pilot hole 31 slightly, after the end of lock screw 20 is resisted against the first lead-in curve 332, can slip in pilot hole 31 along the first lead-in curve 332, make wearing of lock screw 20 more smooth, ensure the smooth assembling of end cap.
In order to the movement of guiding locking screw 20 better, as further improvement of the utility model, described screw 121 is provided with the second guide portion 123 near one end of described locating piece 30, second guide portion 123 is directly engaged on screw 121 place, the second guide portion 123 comprise the 3rd end 1231 be connected with the inwall of described screw 121, the end being arranged on described screw 121 the 4th end 1233 and be connected the second fillet surface 1232 of the 3rd end 1231 and the 4th end 1233.The bore of the 4th end 1233 is greater than the bore of the 3rd end 1231, second guide portion 132 like this is formed and is similar to part pyramid like configuration, even if lock screw 20 is through after locating piece 30, the central axis of lock screw 20 offsets the central axis of screw 121 slightly, the end of lock screw 20 is resisted against after in the second lead-in curve 1232, can slip in screw 121 along the second lead-in curve 1232, make wearing of lock screw 20 more smooth, ensure the smooth assembling of end cap.
Product form of the present utility model is not limited to this case diagram and embodiment, and anyone carries out suitable change or the modification of similar thinking to it, all should be considered as not departing from patent category of the present utility model.
Claims (4)
1. the assembly structure of DC permanent magnet brush motor, comprise stators and rotators, stator comprises shell and is arranged on front end housing and the rear end cap at shell two ends, lock screw is connected with between front end housing and rear end cap, front end housing is provided with the screw coordinated with lock screw, two relative magnet steel are provided with at the inwall of shell, the gap passed for lock screw is formed between two magnet steel, it is characterized in that: also comprise the locating piece be arranged in described gap, locating piece offers the pilot hole guiding described lock screw, pilot hole and described screw are coaxially arranged, described lock screw is through described pilot hole.
2. the assembly structure of DC permanent magnet brush motor as claimed in claim 1, it is characterized in that: described pilot hole is provided with the first guide portion near one end of described rear end cap, the first lead-in curve that the first guide portion comprises the second end on the first end be connected with the inwall of described pilot hole, the end face being arranged on described locating piece and is connected between first end and the second end.
3. the assembly structure of DC permanent magnet brush motor as claimed in claim 1, it is characterized in that: described screw is provided with the second guide portion near one end of described locating piece, the second guide portion comprise the 3rd end be connected with the inwall of described screw, the end being arranged on described screw the 4th end and be connected the second fillet surface of the 3rd end and the 4th end.
4. the assembly structure of DC permanent magnet brush motor as claimed in claim 1, is characterized in that: described locating piece is provided with limit convex grain near the side of described shell, described shell offers the spacing hole corresponding with limit convex grain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420868002.8U CN204316221U (en) | 2014-12-31 | 2014-12-31 | The assembly structure of DC permanent magnet brush motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420868002.8U CN204316221U (en) | 2014-12-31 | 2014-12-31 | The assembly structure of DC permanent magnet brush motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204316221U true CN204316221U (en) | 2015-05-06 |
Family
ID=53138516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420868002.8U Expired - Fee Related CN204316221U (en) | 2014-12-31 | 2014-12-31 | The assembly structure of DC permanent magnet brush motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204316221U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105141052A (en) * | 2015-09-10 | 2015-12-09 | 中国科学院声学研究所 | Permanent magnet direct current motor and method for assembling the same |
-
2014
- 2014-12-31 CN CN201420868002.8U patent/CN204316221U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105141052A (en) * | 2015-09-10 | 2015-12-09 | 中国科学院声学研究所 | Permanent magnet direct current motor and method for assembling the same |
| CN105141052B (en) * | 2015-09-10 | 2018-03-30 | 中国科学院声学研究所 | The assembly method of permanent magnet DC motor and permanent magnet DC motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Yellow Town Huian County 362100 Fujian province Quanzhou City Taiwan base Po Dou Cun Bridge No. 34 Patentee after: Fujian Yuenhua Pump Industry Co., Ltd. Address before: Yellow Town Huian County 362100 Fujian province Quanzhou City Taiwan base Po Dou Cun Bridge No. 34 Patentee before: Yuan Hua Electronic Science and Technology Co., Ltd. of Quanzhou City |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: Yellow Town Huian County 362100 Fujian province Quanzhou Taiwan Business Park Patentee after: Fujian Yuenhua Pump Industry Co., Ltd. Address before: Yellow Town Huian County 362100 Fujian province Quanzhou City Taiwan base Po Dou Cun Bridge No. 34 Patentee before: Fujian Yuenhua Pump Industry Co., Ltd. |
|
| 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: 20150506 Termination date: 20201231 |