CN201515281U - Motor plastic support structure with replaceable carbon brush - Google Patents
Motor plastic support structure with replaceable carbon brush Download PDFInfo
- Publication number
- CN201515281U CN201515281U CN2009201747223U CN200920174722U CN201515281U CN 201515281 U CN201515281 U CN 201515281U CN 2009201747223 U CN2009201747223 U CN 2009201747223U CN 200920174722 U CN200920174722 U CN 200920174722U CN 201515281 U CN201515281 U CN 201515281U
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- China
- Prior art keywords
- carbon brush
- brush
- motor
- assemblies
- springs
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- Expired - Lifetime
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Abstract
The utility model relates to a motor plastic support structure with a replaceable carbon brush, which belongs to the technical field of motor components and comprises two completely symmetrical external small die cavities, and plastic columns, brush boxes, carbon brush springs, carbon brush assemblies and terminal assemblies, wherein the carbon brush assemblies and terminal assemblies are arranged in the small die cavities, the carbon brush springs are positioned on the plastic columns; the carbon brush assemblies comprise carbon brushes, brush cords and plug springs, wherein the tails of the brush cords and the plug springs are fixedly connected; the terminal assemblies comprise brush box base plates, pin terminals, pin terminal connecting holes and leads; the plug springs of the carbon brush assemblies and the pin terminals of the terminal assemblies are spliced; constant force torsional springs are adopted as the carbon brush springs, and the contact positions of the carbon brush springs and the bottoms of the carbon brushes are in arc shapes; and the leads and the pin terminal connecting holes are connected in a manner of pressure welding. The utility model has the advantages that the carbon brush assemblies can be quickly exchanged by plugging and pulling up the plug springs; the constant force torsional springs have stable effective force and do not have angle variation after being abraded, thereby reducing commutation sparks and prolonging the service life of the motor.
Description
Technical field
The utility model relates to a kind of plastic bracket structure of motor, particularly relates to a kind of plastic bracket structure of motor of replaceable carbon brush, belongs to the motor component technical field.
Background technology
In the market, equipment such as professional direct current electric power tools are to the use and the more and more higher requirement of life-span proposition of used motor.Two kinds of versions commonly used can not satisfy client's instructions for use fully on the market:
Structure 1: be illustrated in figure 1 as beryllium copper sheet brush holder structure commonly used, the beryllium-bronze sheet brush holder of this structure by motor internal be carbon brush fixedly, and is connected with external terminal, and the beryllium-bronze sheet brush holder while also is a spring, can apply elastic force to carbon brush, it is touched on the commutator.The characteristics of this structure are: volume is little, compact conformation.Shortcoming is: 1. the beryllium-bronze sheet is to change by angle to apply elastic force to commutator, so motor is in the process of end-of-life of starting working, the angle and the elastic force of carbon brush change, corresponding with it is motor performance is being also along with the variation of carbon brush angle is changing, and is unfavorable for the stable of the rotating speed of motor and performance.2. after carbon brush had worn and torn, brush holder can continue to provide electricity, has worn and torn up to the beryllium-bronze brush holder, and carbon brush can't be changed.3. connect by bayonet socket between carbon brush and beryllium-bronze sheet brush holder, it is unreliable to contact, and when overload, because electric current contact-making surface density is too big, easily makes the beryllium-bronze local overheating, and elastic force reduces, even the brush holder fracture, influences the motor overload ability.In the less motor of volume, adopt this built-in carbon brush component structure more.
Structure 2: the compression spring structure, compare with structure 1, the compression spring structure can guarantee carbon brush in use, the carbon brush angle remains unchanged, motor in use, motor performance can remain unchanged.But the shortcoming of this motor is: 1. along with carbon brush wearing and tearing in the motor use shorten, spring is stretched out, the length lengthening, acting force of the spring will diminish, and carbon brush wearing and tearing back angle is changed, and increase commutation spark, had a strong impact on electrical machinery life, motor performance will reduce; 2. the compression spring needs a bigger initial length usually, has increased axial length, and use can cause reducing of carbon brush length in the small size motor, causes the life-span of a secondary carbon brush can not satisfy requirement of client.It is built-in that carbon brush mostly is, and generally adopts this structure in the bigger motor of volume.
The built-in carbon brush component beryllium copper of this employing chip architecture, in assembling process, must first assemble carbon brush assemblies, refilling mates horses reaches, and phenomenon such as carbon brush is easily produced burst apart or get loose.
The utility model content
The purpose of this utility model is the defective at above-mentioned prior art, a kind of plastic bracket structure of motor of replaceable carbon brush is provided, can change the carbon brush that has worn and torn easily, but stabilizing spring active force, can prolong electrical machinery life, can guarantee the contact reliability of conducting element, phenomenon such as can avoid carbon brush easily to produce bursting apart or get loose.
The technical scheme taked of the utility model is to achieve these goals: a kind of plastic bracket structure of motor of replaceable carbon brush, comprise and mould support, brush box, plastic cylinder, brush holder spring, carbon brush component and terminal assemblies, moulding the support both sides, design has two outside little die cavities of symmetry fully, plastic cylinder, brush box, brush holder spring, carbon brush component and terminal assemblies are arranged in the little die cavity, plastic cylinder is arranged on little die cavity one side vertically upward, and brush holder spring is mounted on the plastic cylinder and locatees; Carbon brush component comprises carbon brush, brush pigtail and slotting spring, and the head of brush pigtail is fixedlyed connected with carbon brush, and the afterbody of brush pigtail is fixedlyed connected with slotting spring; Terminal assemblies comprises brush box bottom board, plug terminal, plug terminal connecting hole and lead, and plug terminal is fixedlyed connected with brush box bottom board with the plug terminal connecting hole; The plug terminal of insertion spring and terminal assemblies is socket connection.Terminal assemblies by riveted way with mould support and connect.
Described brush holder spring adopts the constant force torsion spring.
Described constant force torsion spring and contact position, carbon brush bottom are circular shape.
The afterbody of described brush pigtail and slotting spring are for being welded to connect.
Described lead is in the plug terminal connecting hole, and lead is that pressure welding is connected with the plug terminal connecting hole.
The described bracket edge of moulding near plastic cylinder is a circular shape.
Compared with prior art, the beneficial effects of the utility model are:
(1) structure is unique compact, is moulding the support both sides, and design has two outside little die cavities of symmetry fully, and brush box, plastic cylinder, brush holder spring, carbon brush component and terminal assemblies are arranged in the little die cavity, and this structure extremely is convenient to the replacing of carbon brush component;
(2) the new carbon brush component of fast changeable is after old carbon brush has ground, as long as extract slotting spring, pull out brush holder spring, can take out old carbon brush component, again the carbon brush of new carbon brush component be put into brush box, simultaneously, brush holder spring is put back to original position, slotting spring is inserted on the plug terminal, has just finished the replacing of carbon brush, makes motor can keep former performance and works on, avoided original structure to grind because of the carbon brush of motor, and situation that instrument can not continue to use;
(3) changing traditional compression spring structure is constant force torsion spring structure, especially in carbon brush and constant force torsion spring contact position, the constant force torsion spring has adopted circular shape, make motor in use, when the carbon brush wearing and tearing shorten, the arm of force earthquake of constant force torsion spring, the actual effective force that is subjected to spring of carbon brush is stable basically (changing very little), does not have angle change after abrasion, can reduce commutation spark, prolong electrical machinery life, simultaneously, constant force torsion spring circular shape place and carbon brush contact point also moving, have guaranteed the effective force uniformity of carbon brush to the commutator effect, to the influence of motor, make motor stable performance in entire work process when can balancing force changing;
(4) because lead one end is put into the plug terminal connecting hole, pressure welding is connected lead with plug terminal, promptly earlier the terminal hole flattening is added tin then, lead and plug terminal are linked together, guaranteed that lead and brush pigtail have good bonding strength, electric current flows to commutator by the brush pigtail, at big electric current, when working long hours, more can guarantee stable contact, improved the overload capacity of motor, increase motor life, and more can keep good electrical conductivity;
(5) because carbon brush component can be finished the laggard luggage of assembling at motor joins, the plastic bracket structure of motor of this replaceable carbon brush, in the production line assembling process, carbon brush can not produce and burst apart or phenomenon such as get loose.
Description of drawings
Accompanying drawing 1 (A) is: prior art-built-in carbon brush component beryllium copper chip architecture carbon brush initial position;
Accompanying drawing 1 (B) is: position after prior art-built-in carbon brush component beryllium copper chip architecture carbon brush wearing and tearing are finished;
Accompanying drawing 2 is: the utility model stereogram;
Accompanying drawing 3 is: the utility model exploded view;
Accompanying drawing 4 (A) is: the utility model front view;
Accompanying drawing 4 (B) is: the utility model right view;
Accompanying drawing 5 (A) is: the carbon brush component front view;
Accompanying drawing 5 (B) is: the carbon brush component vertical view;
Accompanying drawing 6 (A) is: the plug terminal structure chart;
Accompanying drawing 6 (B) is: accompanying drawing 6 (A) A-A is to structure chart;
Accompanying drawing 7 is: carbon brush and constant force torsion spring circular shape place installation diagram.
Description of reference numerals: 1. mould support 2. brush boxs 3. plastic cylinders 4. brush holder springs 5. carbon brush components 51. carbon brush 52. brush pigtails 53. and insert spring 6. terminal assemblies 61. brush box bottom board 62. plug terminals 63. plug terminal connecting holes 64. leads
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but not as to qualification of the present utility model.
As Fig. 2,3 and accompanying drawing 4 (A), (B) shown in, a kind of plastic bracket structure of motor of replaceable carbon brush, comprise and mould support 1, brush box 2, plastic cylinder 3, brush holder spring 4, carbon brush component 5 and terminal assemblies 6, moulding support 1 both sides, design has two outside little die cavities of symmetry fully, brush box 2, plastic cylinder 3, brush holder spring 4, carbon brush component 5 and terminal assemblies 6 are arranged in the little die cavity, and plastic cylinder 3 is arranged on little die cavity one side vertically upward, and brush holder spring 4 is mounted on location on the plastic cylinder 3; Support 1 edge of moulding near plastic cylinder 3 is a circular shape.
Shown in accompanying drawing 5 (A), (B), carbon brush component 5 comprises carbon brush 51, brush pigtail 52 and slotting spring 53, and the head of brush pigtail 52 is fixedlyed connected with carbon brush 51, and the afterbody of brush pigtail 52 and slotting spring 53 are for being welded to connect.Shown in Fig. 6 (A), (B), terminal assemblies 6 comprises brush box bottom board 61, plug terminal 62, plug terminal connecting hole 63 and lead 64, and plug terminal 62 is fixedlyed connected with brush box bottom board 61 with plug terminal connecting hole 63; The slotting spring 53 of carbon brush component 5 is socket connection with the plug terminal 62 of terminal assemblies 6.Terminal assemblies 6 by riveted way with mould support 1 and connect.
As shown in Figure 7, brush holder spring 4 adopts the constant force torsion spring, and constant force torsion spring and contact position, carbon brush 51 bottom are circular shape.Lead 64 is in plug terminal connecting hole 63, lead 64 is connected for pressure welding with plug terminal connecting hole 63, promptly earlier 63 flattenings of terminal connecting hole are added tin then, lead 64 and plug terminal 62 are linked together, guaranteed that lead 64 and brush pigtail 52 have good bonding strength.
The assembling result as shown in Figure 2, is moulding support 1 both sides, and brush box 2, plastic cylinder 3, brush holder spring 4, carbon brush component 5 and terminal assemblies 6 are arranged in two symmetrical fully outside little die cavities, and this structure extremely is convenient to the replacing of carbon brush component 6; After old carbon brush has ground, insert spring 53 as long as extract, pull out brush holder spring 4, can take out old carbon brush component 5, again the carbon brush 51 of new carbon brush component 5 is put into brush box 2, simultaneously, brush holder spring 4 is put back to original position, insert spring 53 and be inserted on the plug terminal 62, just finished the replacing of carbon brush component 5, make motor can keep former performance and work on, avoided original structure to grind because of the carbon brush 51 of motor, and the situation that instrument can not continue to use.
Above-described embodiment, the utility model embodiment a kind of more preferably just, the common variation that those skilled in the art carries out in the technical solutions of the utility model scope and replacing all should be included in the protection range of the present utility model.
Claims (6)
1. the plastic bracket structure of motor of a replaceable carbon brush, comprise and mould support, brush box, plastic cylinder, brush holder spring, carbon brush component and terminal assemblies, it is characterized in that moulding the support both sides, design has two outside little die cavities of symmetry fully, brush box, plastic cylinder, brush holder spring, carbon brush component and terminal assemblies are arranged in the little die cavity, plastic cylinder is arranged on little die cavity one side vertically upward, and brush holder spring is mounted on the plastic cylinder and locatees; Carbon brush component comprises carbon brush, brush pigtail and slotting spring, and the head of brush pigtail is fixedlyed connected with carbon brush, and the afterbody of brush pigtail is fixedlyed connected with slotting spring; Terminal assemblies comprises brush box bottom board, plug terminal, plug terminal connecting hole and lead, and plug terminal is fixedlyed connected with brush box bottom board with the plug terminal connecting hole; The plug terminal of insertion spring and terminal assemblies is socket connection, terminal assemblies by riveted way with mould support and connect.
2. the plastic bracket structure of motor of a kind of replaceable carbon brush according to claim 1 is characterized in that described brush holder spring adopts the constant force torsion spring.
3. the plastic bracket structure of motor of a kind of replaceable carbon brush according to claim 2 is characterized in that contact position, described constant force torsion spring and carbon brush bottom is a circular shape.
4. the plastic bracket structure of motor of a kind of replaceable carbon brush according to claim 1 is characterized in that the afterbody of described brush pigtail and slotting spring are for being welded to connect.
5. the plastic bracket structure of motor of a kind of replaceable carbon brush according to claim 1 is characterized in that described lead in the plug terminal connecting hole, and lead is that pressure welding is connected with the plug terminal connecting hole.
6. the plastic bracket structure of motor of a kind of replaceable carbon brush according to claim 1 is characterized in that the described bracket edge of moulding near plastic cylinder is a circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201747223U CN201515281U (en) | 2009-08-26 | 2009-08-26 | Motor plastic support structure with replaceable carbon brush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201747223U CN201515281U (en) | 2009-08-26 | 2009-08-26 | Motor plastic support structure with replaceable carbon brush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201515281U true CN201515281U (en) | 2010-06-23 |
Family
ID=42486692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201747223U Expired - Lifetime CN201515281U (en) | 2009-08-26 | 2009-08-26 | Motor plastic support structure with replaceable carbon brush |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201515281U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107457505A (en) * | 2017-03-17 | 2017-12-12 | 广西博腾恒泰智能科技有限公司 | A kind of welding carbon brush configuration |
-
2009
- 2009-08-26 CN CN2009201747223U patent/CN201515281U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107457505A (en) * | 2017-03-17 | 2017-12-12 | 广西博腾恒泰智能科技有限公司 | A kind of welding carbon brush configuration |
| CN107457505B (en) * | 2017-03-17 | 2018-12-21 | 绍兴新益流体传动机械有限公司 | Carbon brush configuration is used in a kind of welding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100623 Effective date of abandoning: 20101224 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned | ||
| CU03 | Correction of utility model patent gazette |
Correction item: abandoned patent right voluntarily Correct: Revoke the patent right False: Abandonment of patent Number: 05 Volume: 27 |
|
| ERR | Gazette correction |
Free format text: CORRECT: ABANDONED PATENT RIGHT; FROM: ABANDONMENT OF A PATENT TO: WITHDRAWAL OF ABANDONMENT OF A PATENT |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20100623 Effective date of abandoning: 20090826 |