CN103296825A - Motor - Google Patents
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- CN103296825A CN103296825A CN2013100559355A CN201310055935A CN103296825A CN 103296825 A CN103296825 A CN 103296825A CN 2013100559355 A CN2013100559355 A CN 2013100559355A CN 201310055935 A CN201310055935 A CN 201310055935A CN 103296825 A CN103296825 A CN 103296825A
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- terminal
- brush
- field frame
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Abstract
A motor comprises an electric brush and further comprises a terminal (71) inserted into a brush holder (50) through a through hole (18) of a circumferential wall (12) from the outside of a motor shell (1), a flexible braided wire (63) enabling the terminal (71) to be communicated with the electric brush, and the brush holder (50) fixed inside of the motor shell (1) and made of resin. A cutting groove (56) which is capable of accommodating the terminal (71) from one end side in the axial direction is formed on a circumferential wall (52) of the brush holder (50) at a position corresponding to the terminal (71). A gap, corresponding to the jointing part of the flexible braided wire (63) and the terminal (71), among gaps between the circumferential edge of the cutting groove (56) of the brush holder (50) and the terminal (71) is set to be smaller than the wire diameter of the flexible braided wire (63).
Description
Technical field
The present invention relates to comprise the motor of commutator (being also referred to as the important document of commutator or rectifier (commutator)) and brush, for example, relate to the motor that is applicable to as the starting motor of cart.
The application require based on February 27th, 2012 the Japan Patent of Japanese publication special be willing to 2012-040028 number and on January 18th, 2013 in the priority of the special hope of the Japan Patent of Japanese publication 2013-007869 number, and its content quoted among the application.
Background technology
In this motor, have a kind of will be for the form on the perisporium that the terminal of brush power supply is arranged on motor field frame via insulator in the mode that connects from the outside.Existing this motor comprises following structure: by use be arranged on the bolt of motor case external body, the terminal that nut will connect the perisporium of motor field frame is securely fixed on the motor field frame, thereby even terminal is not come off from motor field frame.For example, open in the motor of 2010-124531 communique record the Japan Patent spy, screw togather with the outer screw section that is formed on the terminal from the outside of motor field frame by making nut, terminal is fixed on the motor field frame.
Yet, under the situation of in the past utilizing the bolt, the nut that are arranged on the motor case external body to prevent that terminal from coming off like that, the overall dimension of motor can correspondingly increase because being provided with bolt, nut, thereby in the time of on being attached to vehicle, this part can become obstacle, and perhaps components number correspondingly increases because using bolt, nut.
Therefore, require not use bolt, nut, but carry out the fixing of terminal by easy more mode.But, undertaken by easy mode terminal fixedly the time, consider for the aspect of fault secure (fail safe), need guarantee more reliably the possibility that terminal does not come off from motor field frame.
Summary of the invention
The present invention finishes under the prerequisite of having considered the problems referred to above, its purpose is to provide a kind of can not only guarantee reliably to prevent that terminal from coming off, and can terminal be fixed on the motor of the overall dimension that reduces motor on the motor field frame by easy mode.
According to a first aspect of the invention, motor comprises: motor field frame, and this motor field frame constitutes stator; Rotor, this rotor energy free rotary ground supporting is on above-mentioned motor field frame; Commutator, this commutator is arranged on the above-mentioned rotor, and the sense of current on the coil that supplies to this rotor is switched; Brush, this brush and above-mentioned commutator sliding contact and electric current is flowed in commutator; Terminal, this terminal is inserted into above-mentioned brush carrier inside from the outside of above-mentioned motor field frame via the through hole of the perisporium of above-mentioned motor field frame; Pigtail, this pigtail engages with above-mentioned terminal and above-mentioned brush, and makes above-mentioned terminal and brush mutual conduction; And resinous brush carrier, this brush carrier is fixed on the inside of above-mentioned motor field frame, position on the perisporium of above-mentioned brush carrier, corresponding with above-mentioned terminal, being formed with can be from axial one distolateral grooving of accommodating this terminal, and with in the gap between the periphery of the grooving of above-mentioned brush carrier and above-mentioned terminal, set for littler than the linear diameter of above-mentioned pigtail with the gap of corresponding position, the bonding part of above-mentioned pigtail and terminal.
According to said structure, even under the situation that the effect lower terminal of external force will come off from motor field frame, pigtail also can and stop with the wall collision of the brush carrier of the periphery of grooving, therefore, can stop coming off of terminal.
According to a second aspect of the invention, on the basis of the motor of a first aspect of the present invention, the length setting from brush to terminal of pigtail is become than little until the length of the through hole of motor field frame via the grooving of brush carrier from brush.
According to said structure, can further stop terminal coming off from motor field frame reliably.
According to a third aspect of the invention we, on the basis of the motor of a first aspect of the present invention or second aspect, by the inserts moulding with the form as one terminal unit of parts of terminal and the resinous terminal support that above-mentioned terminal is kept with breakthrough status, the terminal support of terminal unit is pressed into and is fixed in the through hole of motor field frame, thereby terminal is fixed on the motor field frame via terminal support.
According to said structure, terminal does not use screw etc. with respect to the fixing of motor field frame, therefore, can improve assembleability.
Motor is according to a first aspect of the invention set than the linear diameter of the pigtail that with terminal engage little with the gap between terminal the periphery of the grooving of brush carrier.Therefore, even under the situation that the effect lower terminal of external force will come off from motor field frame, pigtail also can and stop with the wall collision of the brush carrier of the periphery of grooving, thereby can stop coming off of terminal.Therefore, can improve the fault-secure reliability that comes off for terminal, thus, can reduce brush, pigtail significantly and deal with improperly because of some and be exposed to outside possibility.In addition, will guarantee that the adeciduate part of terminal is arranged on the inside of motor field frame, just need be at the firm terminal fixing structures such as outer setting screw threads for fastening of motor field frame.Thus, the external structure of motor field frame can be simplified, consequently, taking up room when motor mounting is to the vehicle can be reduced.In addition, because brush carrier has the function that anti-terminal comes off, therefore, can cut down the number of the peripheral components of terminal, reduce cost.
Motor according to a second aspect of the invention arranges specific restriction by the length to pigtail, can further stop terminal coming off from motor field frame reliably.Therefore, can further improve safe reliability.
Motor according to a third aspect of the invention we, by the inserts moulding with the form as one terminal unit of parts of terminal and resinous terminal support, terminal support is pressed into and is fixed in the through hole of motor field frame, thereby terminal is fixed on the motor field frame via terminal support.Consequently, terminal does not use screw etc. with respect to the fixing of motor field frame, can not only improve assembleability, and can simplify the perforation fixed part of terminal.
Description of drawings
Figure 1A is the structure chart of the motor of an embodiment of the present invention, and it is the sectional view of motor, and is to be equivalent to the Ia-Ia of Figure 1B to the cutaway view of looking.
Figure 1B is the structure chart of the motor of an embodiment of the present invention, and it is that the Ib-Ib of Figure 1A is to looking cutaway view.
Fig. 2 A has removed brush to wait to represent figure with Figure 1B same section.
Fig. 2 B is from the stereogram of motor central axis direction observation with Fig. 2 A same section.
Fig. 3 A takes out the figure that represents with the relation between the grooving of the terminal among Fig. 2 A, Fig. 2 B, brush carrier and pigtail (pigtail), and it is the cutaway view of observing from the top of pigtail.
Fig. 3 B takes out the figure that represents with the grooving of the terminal among Fig. 2 A, Fig. 2 B, brush carrier and the relation between pigtail, and it is that the IIIb of Fig. 3 A is to view.
Embodiment
(motor)
Below, with reference to accompanying drawing an embodiment of the present invention is described.
The motor of present embodiment is used as the starting motor of the engine of cart.When using the motor of present embodiment, the crank axle of rotating shaft and engine is linked.
Shown in Figure 1A and Figure 1B, this motor M comprises: the motor field frame 1 that constitutes stator; The rotor 2 of energy free rotary ground supporting on motor field frame 1; The commutator 35 that is arranged on the rotor 2, the sense of current that flows in the coil 33 of rotor 2 is switched; The brush 60 that electric current is flowed in commutator 35; And the terminal 71 of brush 60 being powered from the outside.
Connect at the front bulkhead 11 of fore shell 10 and to be formed with circular centre bore 13, be formed with circular recess 23 at the central part of the inner surface of the aft bulkhead 21 of back cover 20.The front of the rotating shaft 31 of rotor 2 (left side among Figure 1A) can free rotary ground supporting via bearing 41 in the centre bore 13 of the front bulkhead 11 of fore shell 10, the rear end of the rotating shaft 31 of rotor 2 (right-hand member among Figure 1A) can free rotary ground supporting via bearing 43 in the recess 23 of the aft bulkhead 21 of back cover 20.And the front end of rotating shaft 31 is projected into the outside from the centre bore 13 of fore shell 10 via seal 42.
On the other hand, the coil 33 in the rotor core 32 that is wholely set by rotating shaft 31, with rotating shaft 31 of rotor 2 and the grooving that is wrapped in rotor core 32 constitutes.Commutator 35 is configured in the front of the rotor 2 that is positioned at motor field frame 1 inside.Commutator 35 has a plurality of commutator segments 36 of upwards arranging in week, and each commutator segment 36 is connected with separately coil 33.
(brush carrier)
In addition, will be fixed on the inside of fore shell 10 to the resinous brush carrier 50 that brush 60 keeps in the mode that surrounds commutator 35.
Shown in Fig. 2 A and Fig. 2 B, brush carrier 50 has: along the diapire 51 of the internal surface configurations of the front bulkhead 11 of fore shell 10; And along the perisporium 52 of perisporium 12 configuration of fore shell 10.Use screw 17 that diapire 51 is fastening as shown in Figure 1B like this, by this brush carrier 50 is fixed on the fore shell 10.
Diapire 51 constitutes the ring bodies that has circular port 53 at the center.Be provided with breach 55 at a position that makes progress in the week of diapire 51, this breach 55 is continuous with circular port 53, and is communicated with rectangle grooving 56 on being formed on perisporium 52.Grooving 56 is the parts of passing for for terminal 71, and the leading section 71a of terminal 71 is passed above-mentioned grooving 56.
At this, by the inserts moulding with the form as one terminal unit 70 of parts of terminal 71 and the terminal support 72 that terminal 71 is kept with breakthrough status.In addition, be pressed into and be fixed on by the rack body 72a with terminal support 72 in the through hole 18 of fore shell 10, just can utilize terminal support 72 that terminal 71 is fixed on the fore shell 10.
In addition, shown in Fig. 2 B, near the grooving 56 of brush carrier 50, be provided with the brush resettlement section 57A that uses the brush 60A (60) of (+utmost point side) to keep to power supply.On the other hand, across circular port 53 with above-mentioned to the relative position of the brush resettlement section 57A that keeps of brush 60A of power supply usefulness on, be provided with the brush 60B(60 to earthy (utmost point side)) the brush resettlement section 57B that keeps.
The brush 60A of power supply usefulness is housed among the above-mentioned brush resettlement section 57A, and earthy brush 60B is housed among the 57B of brush resettlement section.Utilize spring 61 with each brush 60A, 60B towards the center of circular port 53 application of force.By this, each brush 60A, 60B have elastic force ground and commutator 35 sliding contacts that are configured on the rotor 2.
One end of pigtail 63 engages with earthy brush 60B.The other end of this pigtail 63 is connected with fore shell 10 via screw 17, thereby makes earthy brush 60B ground connection on motor field frame 1.In addition, an end of pigtail 63 engages with the brush 60A of power supply usefulness.The leading section 71a that utilizes spot welding to make the other end of this pigtail 63 be inserted into the terminal 71 of brush carrier 50 inside with passing grooving 56 engages.
In this case, shown in Fig. 2 A～Fig. 3 B, utilize spot welding will be with the other end of the brush 60A pigtail 63 that be connected of power supply usefulness so that the axis of this pigtail 63 towards with the direction of the direction of insertion quadrature of terminal 71 (direction vertical with the diapire 51 of brush carrier 50) and with the state of the outer peripheral face butt of pigtail 63, come to engage with the side of the leading section 71a of the square-section shape of terminal 71 (along the face of the direction of terminal 71 insertion groovings 56).
At this, the width of the grooving 56 of brush carrier 50 is carried out following setting.That is, with among the gap S of the periphery of the grooving 56 of brush carrier 50 and 71 of terminals, set for littler than the linear diameter D of pigtail 63 with the gap S1 of corresponding position, the bonding part of pigtail 63 and terminal 71.
That is to say, gap S1 and linear diameter D are set for satisfy D＞S1.
In addition, keeping on the basis of above-mentioned relation, the relation between the linear diameter D of the width B of the width H of grooving 56 and terminal 71 and pigtail 63 is being set for satisfied B+D＞H＞B.
In addition, 71 the length setting from brush 60A to terminal with pigtail 63 becomes than little until the length of the through hole 18 of fore shell 10 via the grooving 56 of brush carrier 50 from brush 60A.
(assembling sequence of terminal and brush)
In addition, carry out the assembling of terminal 71 and brush 60A in the following order.
At first, make the terminal unit 70 that is constituted by terminal 71 and terminal support 72 by the inserts moulding.Then, in the outside of motor field frame 1 brush 60A, pigtail 63, terminal 71 are engaged.Meanwhile, utilize the breach 55 of brush carrier 50 that brush 60A, pigtail 63 etc. is put into the inboard, and the leading section 71a of terminal 71 is inserted in the grooving 56 of brush carrier 50, thereby brush carrier 50 is accommodated and is fixed in the fore shell 10.By above-mentioned steps, finish the installation of terminal 71 and the assembling of brush carrier 50.Meanwhile, utilize the breach 55 of brush carrier 50 that brush 60A, pigtail 63 etc. is put into the inboard, and the leading section 71a of terminal 71 is inserted in the grooving 56 of brush carrier 50 from axial one distolateral (lower end side Fig. 2 B), thereby brush carrier 50 is accommodated and is fixed in the fore shell 10.By above-mentioned steps, can finish the installation of terminal 71 and the assembling of brush carrier 50.
(effect)
Motor M according to comprising said structure can obtain following effect.
At first, the periphery of the grooving 56 of brush carrier 50 and the gap between the terminal 71 are set for linear diameter D than the pigtail 63 that engages with terminal 71.Therefore, even under the situation that the effect lower terminal 71 of external force will come off from motor field frame 1, pigtail 63 also can and stop with wall (perisporium 52) collision of the brush carrier 50 of the periphery of grooving 56, can stop coming off of terminal 71 by this.
Therefore, can improve the fault-secure reliability that comes off for terminal 71, consequently, can reduce brush 60A, pigtail 63 significantly and deal with improperly because of some and be exposed to outside possibility.In addition, will guarantee that terminal 71 adeciduate parts are arranged on the inside of motor field frame 1, just need not the firm terminal fixing structures such as outer setting screw threads for fastening at motor field frame 1.Therefore, can simplify the external structure of motor field frame 1.Thus, can reduce taking up room when being installed to motor M on the vehicle.In addition, because brush carrier 50 has the function that prevents that terminal 71 from coming off, therefore, can cut down the number of the peripheral components of terminal 71, reduce cost.
In addition, by the length to pigtail 63 specific restriction is set, can further stops terminal coming off from motor field frame 1 reliably.Therefore, can further improve fault-secure reliability.
In addition, by utilizing spot welding pigtail 63 is engaged with terminal 71, make wall (perisporium 52) butt of pigtail 63 and brush carrier 50, thereby can increase the resistance when stoping terminal 71 to come off.And, can improve the reliability that pigtail 63 engages with terminal 71.
In addition, make the form as one terminal unit 70 of parts of terminal 71 and resinous terminal support 72 by the inserts moulding, terminal support 72 is pressed into and is fixed in the through hole 18 of motor field frame 1, thereby terminal 71 is fixed on the motor field frame 1 via terminal support 72.Therefore, do not use screw etc. at terminal 71 with respect to fixing of motor field frame 1, can not only improve assembleability, and can simplify the perforation fixed part of terminal 71.
Claims (4)
1. a motor is characterized in that, comprising:
Motor field frame, this motor field frame constitutes stator; Rotor, this rotor energy free rotary ground supporting is on described motor field frame;
Commutator, this commutator is arranged on the described rotor, and the sense of current on the coil that supplies to this rotor is switched;
Brush, this brush and described commutator sliding contact and electric current is flowed in commutator;
Terminal, this terminal are inserted into the inside of described brush carrier via the through hole of the perisporium of described motor field frame from the outside of described motor field frame;
Pigtail, this pigtail engages with described terminal and described brush, and makes described terminal and brush mutual conduction; And
Resinous brush carrier, this brush carrier is fixed on the inside of described motor field frame,
Position on the perisporium of described brush carrier, corresponding with described terminal, being formed with can be from axial one distolateral grooving of accommodating this terminal,
With in the gap between the periphery of the grooving of described brush carrier and the described terminal, set for littler than the linear diameter of described pigtail with the gap of corresponding position, the bonding part of described pigtail and terminal.
2. motor as claimed in claim 1 is characterized in that, the length setting one-tenth ratio from described brush to described terminal of described pigtail is little until the length of the through hole of described motor field frame via the grooving of described brush carrier from described brush.
3. motor as claimed in claim 1, it is characterized in that, by the inserts moulding with the form as one terminal unit of parts of described terminal and the resinous terminal support that described terminal is kept with breakthrough status, the terminal support of described terminal unit is pressed into and is fixed in the through hole of described motor field frame, thereby described terminal is fixed on the described motor field frame via terminal support.
4. motor as claimed in claim 2, it is characterized in that, by the inserts moulding with the form as one terminal unit of parts of described terminal and the resinous terminal support that described terminal is kept with breakthrough status, the terminal support of described terminal unit is pressed into and is fixed in the through hole of described motor field frame, thereby described terminal is fixed on the described motor field frame via terminal support.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012040028 | 2012-02-27 | ||
| JP2012-040028 | 2012-02-27 | ||
| JP2013-007869 | 2013-01-18 | ||
| JP2013007869A JP6027449B2 (en) | 2012-02-27 | 2013-01-18 | Electric motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103296825A true CN103296825A (en) | 2013-09-11 |
| CN103296825B CN103296825B (en) | 2015-10-07 |
Family
ID=49097282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310055935.5A Expired - Fee Related CN103296825B (en) | 2012-02-27 | 2013-02-21 | Motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103296825B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105703534A (en) * | 2014-12-10 | 2016-06-22 | 罗伯特·博世有限公司 | Commutator device for electric machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5889345A (en) * | 1996-07-08 | 1999-03-30 | Mitsuba Corporation | Waterproof electric motor structure |
| US5942822A (en) * | 1996-12-27 | 1999-08-24 | Mitsuba Corporation | Electric motor structure |
| CN101610013A (en) * | 2008-06-16 | 2009-12-23 | 德昌电机(深圳)有限公司 | Motor end cover component |
| JP2010124531A (en) * | 2008-11-17 | 2010-06-03 | Mitsuba Corp | Electric motor |
-
2013
- 2013-02-21 CN CN201310055935.5A patent/CN103296825B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5889345A (en) * | 1996-07-08 | 1999-03-30 | Mitsuba Corporation | Waterproof electric motor structure |
| US5942822A (en) * | 1996-12-27 | 1999-08-24 | Mitsuba Corporation | Electric motor structure |
| CN101610013A (en) * | 2008-06-16 | 2009-12-23 | 德昌电机(深圳)有限公司 | Motor end cover component |
| JP2010124531A (en) * | 2008-11-17 | 2010-06-03 | Mitsuba Corp | Electric motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105703534A (en) * | 2014-12-10 | 2016-06-22 | 罗伯特·博世有限公司 | Commutator device for electric machine |
| CN105703534B (en) * | 2014-12-10 | 2018-08-07 | Seg汽车德国有限责任公司 | Reversing arrangement for motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103296825B (en) | 2015-10-07 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20210221 |
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| CF01 | Termination of patent right due to non-payment of annual fee |