CN202121419U - Quick carbon brush changing mechanism for electric tools - Google Patents
Quick carbon brush changing mechanism for electric tools Download PDFInfo
- Publication number
- CN202121419U CN202121419U CN2011202207130U CN201120220713U CN202121419U CN 202121419 U CN202121419 U CN 202121419U CN 2011202207130 U CN2011202207130 U CN 2011202207130U CN 201120220713 U CN201120220713 U CN 201120220713U CN 202121419 U CN202121419 U CN 202121419U
- Authority
- CN
- China
- Prior art keywords
- brush
- lid
- casing
- cage knob
- carbon brush
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a quick carbon brush changing mechanism for electric tools, which comprises a casing. A brush holder and a motor commutator are arranged inside the casing, a brush cover corresponding to the brush holder is arranged on the casing and rotatably connected onto the casing, an elastic structure used for pressing a carbon brush to the motor commutator when the brush cover is closed is arranged between the brush cover and the brush holder, and a locking structure used for locking the brush cover when the brush cover is closed and unlocking the brush cover when the brush cover is opened is further arranged on the casing. The quick carbon brush changing mechanism is capable of realizing quick checking of the carbon brush without using other tools, and convenient and quick, and the carbon brush can be replaced according abrasion conditions.
Description
Technical field
The utility model relates to electric tool, particularly a kind of carbon brush quick-changing mechanism that adopts the electric tool of brush motor driving.
Background technology
The carbon brush structure of brush motor commonly used has brush holder formula and brush carrier formula.Wherein, brush holder formula carbon brush structure adopts disc spring pressure, makes carbon brush push dynamo-electric commutator to; And with screw will brush cover lock on casing satisfying the safety requirement, this structure is checked, when changing carbon brush, must looked for instrument to unclamp screw earlier, takes off the brush lid and chooses the opening quotation spring, could take out carbon brush afterwards.Brush carrier formula carbon brush structure utilization brush cap spiral tightens brush holder spring, and makes carbon brush push commutator to, checks, when changing carbon brush, must look for instrument to turn on the brush cap earlier, occurs installing not in place in the time of installation easily, and carbon brush is difficult for taking out replacing after having ground.
The utility model content
The utility model problem to be solved just provides a kind of carbon brush quick-changing mechanism of electric tool; Simple in structure, simplify the operation, need only an action just can check the carbon brush surplus; And the old carbon brush of taking-up more renews carbon brush under the situation that carbon brush has ground, and changes fast in speed.
In order to solve the problems of the technologies described above; The utility model adopts following technical scheme: a kind of carbon brush quick-changing mechanism of electric tool; Comprise casing; In casing, be provided with brush holder and engine commutator, it is corresponding with brush holder on casing, to be provided with the brush lid, it is characterized in that: the switching of brush lid is on casing; Be provided with when the brush lid is closed the elastic structure of carbon brush being pressed to engine commutator between brush lid and the brush holder, also be provided with when the brush lid is closed locking brush lid on the casing or opening the buckle structure that brush unlocks when covering.
Further; Said elastic structure comprises that being located at brush cover support on the interior sidewall surface, is located at the bearing pin on the support and is located at the torsion spring on the bearing pin, is located to supply the glide direction of the cell body upper edge carbon brush of carbon brush slippage to be provided with groove on the brush holder, and an end of torsion spring is against on the wall of brush lid inboard; After the brush lid is closed; The other end of torsion spring falls into and is against in the groove on the carbon brush, cover under the closed condition locking of removing buckle structure at brush, and brush covers elastic force through torsion spring and automatically springs open and be opening.
Further; Said buckle structure comprises that the cage knob that is located in the casing covers near the locked groove on the end face of cage knob with being located to brush; Be provided with gathering sill in the casing, cage knob is slippage in gathering sill, and the front end of cage knob is closed back and locked groove corresponding matching at the brush lid; The rear end of cage knob is provided with the shifting block that exposes casing, between gathering sill and cage knob, is provided with the compression spring of cage knob being pushed to locked groove.
Further, be provided with transition inclined-plane I between said brush lid interior sidewall surface and the locked groove oral area end face, between cage knob front end face and lateral surface, be provided with the transition inclined-plane II corresponding with transition inclined-plane I.
Further, said brush lid interior sidewall surface is provided with the projection to the inboard protrusion of brush lid, and locked groove is located on the projection, and transition inclined-plane I is located between projection medial surface and the locked groove oral area end face.
Further, said brush lid is flat to be realized spinning upside down on casing to switching, and bearing pin is flat to being located on the support, and groove is located at cell body both sides up and down.
Further, said locked groove is located at the left end of brush lid, and cage knob is corresponding flat to the left side that is located at the brush lid.
Further, said locked groove is located at the right-hand member of brush lid, and cage knob is corresponding flat to the right side that is located at the brush lid.
Further, hold level with both hands to switching on the said brush lid and on casing, realize spinning upside down, locked groove is located at the lower end of brush lid, and the cage knob correspondence vertically is located at the downside of brush lid.
Further, following the holding level with both hands to switching of said brush lid realizes spinning upside down on casing, and locked groove is located at the upper end of brush lid, and the cage knob correspondence vertically is located at the upside of brush lid.
After adopting technique scheme, the utlity model has following advantage:, easy as the chummery door opens and closes to the operation of brush lid; Do not need other instruments just can realize checking fast of carbon brush, and look the carbon brush abrasion condition and change, convenient and swift.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is the internal structure sketch map of a kind of embodiment of the utility model;
Fig. 2 is an external entity structural representation embodiment illustrated in fig. 1.
Embodiment
The structural representation of a kind of embodiment of the utility model as illustrated in fig. 1 and 2; A kind of carbon brush quick-changing mechanism of electric tool; Comprise casing 1, in casing, be provided with brush holder 3 and engine commutator 4, brush holder is provided with carbon brush 5 and contacts with engine commutator; On casing, being provided with brush covers 2 corresponding with brush holder; Brush lid switching is being provided with when the brush lid is closed the elastic structure of carbon brush being pressed to engine commutator between brush lid and the brush holder on casing, also be provided with when the brush lid is closed locking brush lid on the casing or opening the buckle structure that brush unlocks when covering.
Said elastic structure comprises that being located at brush builds support 21 on the interior sidewall surface, is located at the bearing pin 6 on the support and is located at the torsion spring 7 on the bearing pin; Be located at and supply the glide direction of the cell body 31 upper edge carbon brush of carbon brush slippage to be provided with groove 32 on the brush holder; One end of torsion spring is against on the inboard wall of brush lid, and after the brush lid was closed, the other end of torsion spring fell into and is against on the carbon brush in the groove; Cover under the closed condition locking of removing buckle structure at brush, brush covers elastic force through torsion spring and automatically springs open and be opening.
Said buckle structure comprises that the cage knob 8 that is located in the casing covers near the locked groove on the end face of cage knob 22 with being located to brush; Be provided with gathering sill 11 in the casing, cage knob is slippage in gathering sill, and the front end of cage knob is closed back and locked groove corresponding matching at the brush lid; The rear end of cage knob is provided with the shifting block 81 that exposes casing; Be convenient to the user and stir, between gathering sill and cage knob, be provided with the compression spring 9 of cage knob being pushed to locked groove, can certainly use torsion spring to realize; Shifting block also can be located in the air inlet 12, is not exposed at the casing outside, just can stir with flat blade screwdriver or key, can avoid accident to run into shifting block like this brush lid is opened automatically.
Brush covers between interior sidewall surface and the locked groove oral area end face and is provided with transition inclined-plane I23, between cage knob front end face and lateral surface, is provided with the transition inclined-plane II82 corresponding with transition inclined-plane I.On this basis, cover the projection 24 that is provided with on the interior sidewall surface to the inboard protrusion of brush lid at brush, locked groove is located on the projection, transition inclined-plane I is located between projection medial surface and the locked groove oral area end face, and present embodiment adopts this structure exactly.
In the foregoing description, following the holding level with both hands to switching of brush lid realizes spinning upside down on casing, and bearing pin is flat to being located on the support, and groove is located at cell body both sides up and down.Locked groove is located at the right-hand member of brush lid, and cage knob is corresponding flat to the right side that is located at the brush lid.
In addition, for the substitute mode of brush lid, and the position is set can carries out some and change of locked groove and cage knob, such as will brush lid on hold level with both hands to switching and on casing, realize spinning upside down, locked groove is located at the left end of brush lid, corresponding the putting down to being located at of cage knob brushed the left side of covering; Perhaps will brush lid on hold level with both hands to switching and on casing, realize spinning upside down, locked groove is located at the lower end of brush lid, the cage knob correspondence vertically is located at the downside that brush covers; Or will brush following the holding level with both hands to switching of covering and on casing, realize spinning upside down, locked groove is located at the upper end of brush lid, and the cage knob correspondence vertically is located at the upside that brush covers.The version of upset is about to the brush lid and vertically transfers on casing about can also the brush lid being arranged to, and correspondingly locked groove and cage knob is carried out adaptive change.
The operation of existing carbon brush structure when changing carbon brush is following: the screw of outwarding winding → get brush covers → pushes aside disc spring → get carbon brush → renew carbon brush → put back to disc spring → put back to brush to cover → screw screw, needs about 45 seconds of time.The operation of the carbon brush structure of the utility model when changing carbon brush is following: push cage knob → brush lid aside and automatically spring open → get carbon brush → renew the carbon brush → brush that closes to cover; Time only needs 13 seconds; 1/3 of not enough existing structure required time; When the brush that particularly closes covers, only need slightly firmly to get final product, do not need any instrument.
Except that above-mentioned preferred embodiment; The utility model also has other execution mode; Those skilled in the art can make various changes and distortion according to the utility model, only otherwise break away from the spirit of the utility model, all should belong to the defined scope of the utility model accompanying claims.
Claims (10)
1. the carbon brush quick-changing mechanism of an electric tool; Comprise casing (1); In casing, be provided with brush holder (3) and engine commutator (4), it is corresponding with brush holder on casing, to be provided with brush lid (2), it is characterized in that: the switching of brush lid is on casing; Be provided with when the brush lid is closed the elastic structure of carbon brush being pressed to engine commutator between brush lid and the brush holder, also be provided with when the brush lid is closed locking brush lid on the casing or opening the buckle structure that brush unlocks when covering.
2. the carbon brush quick-changing mechanism of a kind of electric tool according to claim 1; It is characterized in that: said elastic structure comprises that being located at brush builds support (21) on the interior sidewall surface, is located at the bearing pin (6) on the support and is located at the torsion spring (7) on the bearing pin; Be located at and supply the glide direction of cell body (31) the upper edge carbon brush of carbon brush slippage to be provided with groove (32) on the brush holder; One end of torsion spring is against on the inboard wall of brush lid, and after the brush lid was closed, the other end of torsion spring fell into and is against on the carbon brush in the groove; Cover under the closed condition locking of removing buckle structure at brush, brush covers elastic force through torsion spring and automatically springs open and be opening.
3. the carbon brush quick-changing mechanism of a kind of electric tool according to claim 2; It is characterized in that: said buckle structure comprise the cage knob (8) that is located in the casing and be located at the brush cover near the locked groove on the end face of cage knob (22); Be provided with gathering sill (11) in the casing, cage knob is slippage in gathering sill, and the front end of cage knob is closed back and locked groove corresponding matching at the brush lid; The rear end of cage knob is provided with the shifting block (81) that exposes casing, between gathering sill and cage knob, is provided with the compression spring (9) of cage knob being pushed to locked groove.
4. the carbon brush quick-changing mechanism of a kind of electric tool according to claim 3; It is characterized in that: be provided with transition inclined-plane I (23) between said brush lid interior sidewall surface and the locked groove oral area end face, between cage knob front end face and lateral surface, be provided with the transition inclined-plane II (82) corresponding with transition inclined-plane I.
5. according to the carbon brush quick-changing mechanism of claim 3 or 4 described a kind of electric tools; It is characterized in that: said brush lid interior sidewall surface is provided with the projection (24) to the inboard protrusion of brush lid; Locked groove is located on the projection, and transition inclined-plane I is located between projection medial surface and the locked groove oral area end face.
6. according to the carbon brush quick-changing mechanism of claim 1,2,3 or 4 described a kind of electric tools, it is characterized in that: said brush lid is flat to be realized spinning upside down on casing to switching, and bearing pin is flat to being located on the support, and groove is located at cell body both sides up and down.
7. the carbon brush quick-changing mechanism of a kind of electric tool according to claim 6 is characterized in that: said locked groove is located at the left end of brush lid, and cage knob is corresponding flat to the left side that is located at the brush lid.
8. the carbon brush quick-changing mechanism of a kind of electric tool according to claim 6 is characterized in that: said locked groove is located at the right-hand member of brush lid, and cage knob is corresponding flat to the right side that is located at the brush lid.
9. the carbon brush quick-changing mechanism of a kind of electric tool according to claim 6 is characterized in that: hold level with both hands to switching on the said brush lid and on casing, realizes spinning upside down, locked groove is located at the lower end of brush lid, and the cage knob correspondence vertically is located at the downside that brush covers.
10. the carbon brush quick-changing mechanism of a kind of electric tool according to claim 6 is characterized in that: following the holding level with both hands to switching of said brush lid realizes spinning upside down on casing, and locked groove is located at the upper end of brush lid, and the cage knob correspondence vertically is located at the upside that brush covers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202207130U CN202121419U (en) | 2011-06-27 | 2011-06-27 | Quick carbon brush changing mechanism for electric tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202207130U CN202121419U (en) | 2011-06-27 | 2011-06-27 | Quick carbon brush changing mechanism for electric tools |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202121419U true CN202121419U (en) | 2012-01-18 |
Family
ID=45462456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202207130U Expired - Lifetime CN202121419U (en) | 2011-06-27 | 2011-06-27 | Quick carbon brush changing mechanism for electric tools |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202121419U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104092335A (en) * | 2014-07-16 | 2014-10-08 | 无锡市凯旋电机有限公司 | Carbon brush installing and fixing device easy and convenient to use |
-
2011
- 2011-06-27 CN CN2011202207130U patent/CN202121419U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104092335A (en) * | 2014-07-16 | 2014-10-08 | 无锡市凯旋电机有限公司 | Carbon brush installing and fixing device easy and convenient to use |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120118 |