CN104170590A - Electric tool with improved brake structure and electric motor of electric tool - Google Patents
Electric tool with improved brake structure and electric motor of electric tool Download PDFInfo
- Publication number
- CN104170590A CN104170590A CN201310199889.6A CN201310199889A CN104170590A CN 104170590 A CN104170590 A CN 104170590A CN 201310199889 A CN201310199889 A CN 201310199889A CN 104170590 A CN104170590 A CN 104170590A
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- dish shape
- shape piece
- motor
- electric tool
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Abstract
The invention discloses an electric tool with an improved brake structure and an electric motor of the electric tool. The electric tool comprises the electric motor, a brake disc and a disc-shaped piece, wherein the electric motor is provided with a rotating shaft, the brake disc is fixedly arranged on the electric motor, the disc-shaped piece is arranged on the rotating shaft in a sleeving way and is in contact with or separated from the brake disc, and height difference exists between the gravity center and the center of the disc-shaped piece. According to the electric tool and the electric motor, disclosed by the invention, a mode of braking by the electric motor is adopted, and a braking function is realized through the friction between the disc-shaped piece and the brake disc; the electric tool has the advantages that the structure is simple, the braking effect is good, and the like.
Description
Technical field
the present invention relates to a kind of electric tool and motor thereof with improvement brake structure.
Background technology
electric tool at present, especially four-wheel mower, as Fig. 1 often comprise bearing 102, be fixed on bearing 102 and for the motor 104 that drives, belt 106 that one end is connected with the output shaft of motor 104, be connected with the other end of belt 106 and the driving wheel 108 of corresponding rotation and be fixed on the rotating blade 109 in driving wheel 108 rotating shafts.While needing to shut down in operation way, though user after cutting off the electricity supply still because rotating blade is under the effect of inertia, can run up a period of time, cannot meet security requirement, when serious, even can cause personal injury.And according to the requirement of security technique standard, electric tool need be after cutting off the electricity supply 1-5 stops operating in second, therefore all needs to be provided with brake gear.And brake gear is generally divided into mechanical brake and electromagnetic brake, existing machinery brake structure is arranged on electric tool, and structure is comparatively complicated, and electromagnetic brake exists the shortcomings such as brake is unstable, and cost is higher.
Summary of the invention
the present invention seeks to: a kind of electric tool and motor thereof with improvement brake structure is provided.
the first technical scheme of the present invention is: a kind of electric tool with improvement brake structure, it comprises: have rotating shaft motor, be fixed on brake disc on motor, be set in rotating shaft and with brake disc contact or the dish shape piece that separates, there is difference in height in center of gravity and the center of wherein said dish shape piece.
on the basis of the first technical scheme, further comprise following attached technical scheme:
described brake disc has several fixtures that allow the centre bore that passes of rotating shaft and brake disc and motor are interfixed.
described dish shape piece comprises several gaps of the end face that has axis hole and be level, several blades that are connected with end slope and interval adjacent blades, and the center of gravity of described dish shape piece is positioned on blade, and the center of dish shape piece is positioned at the center of axis hole.
described gap is curved at least partly in the one end being connected with end face.
described motor is stent-type motor.
horizontal or the bending of the end of described blade.
it is large that described blade becomes gradually in direction from inside to outside.
it further comprises the nut of axial restraint dish shape piece, the carbon brush supports adjacent with brake disc and the impeller that is positioned at the motor other end and is driven by rotating shaft.
the second technical scheme of the present invention is: the motor that a kind of electric tool is used, it comprises: have rotating shaft motor, be fixed on brake disc on motor, be set in rotating shaft and with brake disc contact or the dish shape piece that separates, there is difference in height in center of gravity and the center of wherein said dish shape piece, and brake disc and dish shape piece are metalwork, and dish shape piece exists deflection in the axial direction.
on the basis of the second technical scheme, further comprise following attached technical scheme:
described dish shape piece comprises several gaps of the end face that has axis hole and be level, several blades that are connected with end slope and interval adjacent blades, and the center of gravity of described dish shape piece is positioned on blade, and the center of dish shape piece is positioned at the center of axis hole.
described gap is curved at least partly in the one end being connected with end face.
described motor is stent-type motor.
horizontal or the bending of the end of described blade.
it is large that described blade becomes gradually in direction from inside to outside.
it further comprises nut, the carbon brush supports adjacent with brake disc and the impeller that is positioned at the motor other end and is driven by rotating shaft of circumferentially fixing dish shape piece.
between dish shape piece and brake disc, increase by a part, part shape is identical with dish shape piece shape, comprise that the end that has axis hole and be level is connected with sloped-end and circumferential connected rake, the axis hole of part is coaxial with the axis hole of dish shape piece, and end and brake disc plane contact outside the end face of dish shape piece, the inclination angle of rake is less than the inclination angle of blade, can realize thus good braking quality between dish shape piece, part, brake disc three.
advantage of the present invention is:
the present invention adopts the mode of motor brake, realizes brake function by the friction between dish shape piece and brake disc, has the advantages such as simple in structure, braking effect is good.
Brief description of the drawings
below in conjunction with drawings and Examples, the invention will be further described:
fig. 1 is the structural representation of prior art;
fig. 2 is the decomposing schematic representation of motor of the present invention;
fig. 3 is the schematic diagram of motor of the present invention in braking state;
fig. 4 is the in running order schematic diagram of motor of the present invention; ;
fig. 5 is the schematic diagram of the first form of dish shape piece in the present invention;
fig. 6 is the schematic diagram of the second form of dish shape piece in the present invention;
fig. 7 is dish shape piece in Fig. 6 and the change in location schematic diagram of brake disc;
wherein: 1, motor; 10, rotating shaft; 2, brake disc; 20, centre bore; 22, fixture; 3,31 dish shape pieces; 30,302, end face; 300, axis hole; 2,304, blade; 34,306, gap; 308, projection; 4, nut; 6, impeller.
Embodiment
embodiment: as shown in Fig. 2-7, the invention provides a kind of embodiment of the electric tool with improvement brake structure, be preferably four-wheel mower, it comprise have rotating shaft 10 motor 1, be fixed on brake disc 2 on motor 1, be set in the dish shape piece 3 and the nut 4 of axial restraint dish shape piece 3, the carbon brush supports 5 adjacent with brake disc 2 and the impeller 6 that is positioned at the motor other end and is driven by rotating shaft 10 that in rotating shaft 10 and with brake disc 2, contact or separate, there is difference in height in center of gravity and the center of wherein said dish shape piece 3.
brake disc 2 is for metalwork and have several fixtures 22 that allow centre bore 20 that rotating shaft 10 passes and brake disc and motor 1 are interfixed.Dish shape piece 3 is for metalwork and comprise the end face 30 that has axis hole 300 and be level, several blades 32 that tilt to be connected with end face 30 and several gaps 34 of interval adjacent blades 32, the center of gravity of dish shape piece 3 is positioned on blade 32, and the center of dish shape piece 3 is positioned at axis hole 300 center.Gap 34 is curved at least partly in the one end being connected with end face 30.Motor 1 is preferably stent-type motor.Horizontal or the bending of the end of blade 32.It is large that blade 32 becomes gradually in direction from inside to outside.
the invention provides a kind of embodiment that is applied to the motor in electric tool, it comprise have rotating shaft 10 motor 1, be fixed on brake disc 2 on motor 1, be set in a dish shape piece 3 that contacts or separate in rotating shaft 10 and with brake disc 2, there is difference in height L in the center of gravity of wherein said dish shape piece 3 and center, and brake disc 2 and dish shape piece 3 are metalwork, and there is deflection H at axial direction in dish shape piece 3, to guarantee that brake disc 2 and dish shape piece 3 depart from mutually, make motor 1 in running order.
as shown in Figure 5, it is the first version of dish shape piece, dish shape piece 3 comprises the end face 30 that has axis hole 300 and be level, several blades 32 that tilt to be connected with end face 30 and several gaps 34 of interval adjacent blades 32, the center of gravity of dish shape piece 3 is positioned on blade 32, and the center of dish shape piece 3 is positioned at axis hole 300 center.Its Leaf 32 ends are and are bent upwards.
as shown in Fig. 6-7, it is the second version of dish shape piece, several gaps 306 that dish shape piece 31 comprises several blades 304 of being the end face 302 of level, tilt to be connected with end face 302, interval adjacent blades 304 be correspondingly positioned at blade 304 ends and can be with brake disc 2 against the projection 308 contacting, the center of gravity of dish shape piece 31 is positioned on blade 304, and dish shape piece 31 center is positioned at the center of axis hole.Its Leaf 304 ends are horizontal, and projection 308 is stamped to form.
in order to implement better the present invention, can between dish shape piece and brake disc, increase by a part, part shape is identical with dish shape piece shape, comprise that the end that has axis hole and be level is connected with sloped-end and circumferential connected rake, the axis hole of part is coaxial with the axis hole of dish shape piece, and end and brake disc plane contact outside the end face of dish shape piece, the inclination angle of rake is less than the inclination angle of blade, can realize thus good braking quality between dish shape piece, part, brake disc three.
the present invention adopts the mode of motor brake, realizes brake function by the friction between dish shape piece and brake disc, has the advantages such as simple in structure, braking effect is good.
certainly above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalent transformation or modification that according to the present invention, the Spirit Essence of main technical schemes does, within all should being encompassed in protection scope of the present invention.
Claims (10)
1. one kind has the electric tool of improvement brake structure, it is characterized in that it comprises: have rotating shaft (10) motor (1), be fixed on brake disc (2) on motor (1), be set in rotating shaft (10) upper and with brake disc (2) contact or the dish shape piece (3) that separates, there is difference in height in center of gravity and the center of wherein said dish shape piece (3).
2. a kind of electric tool with improvement brake structure according to claim 1, is characterized in that: several fixtures (22) that described brake disc (2) has centre bore (20) that permission rotating shaft (10) passes and brake disc and motor (1) are interfixed.
3. a kind of electric tool with improvement brake structure according to claim 1 and 2, it is characterized in that: described dish shape piece (3) comprise there is axis hole (300) and be the end face (30) of level, several blades (32) of tilting to be connected with end face (30) and several gaps (34) of interval adjacent blades (32), it is upper that the center of gravity of described dish shape piece (3) is positioned at blade (32), and the center of dish shape piece (3) is positioned at the center of axis hole (300).
4. a kind of electric tool with improvement brake structure according to claim 3, is characterized in that: described gap (34) are curved at least partly in the one end being connected with end face (30).
5. a kind of electric tool with improvement brake structure according to claim 1 and 2, is characterized in that: described motor (1) is stent-type motor.
6. a kind of electric tool with improvement brake structure according to claim 4, is characterized in that: the horizontal or bending of the end of described blade (32).
7. a kind of electric tool with improvement brake structure according to claim 6, is characterized in that: described blade (32) becomes gradually large in direction from inside to outside.
8. a kind of electric tool with improvement brake structure according to claim 3, is characterized in that: it further comprises the nut (4) of axial restraint dish shape piece (3), the carbon brush supports (5) adjacent with brake disc (2) and the impeller (6) that is positioned at the motor other end and is driven by rotating shaft (10).
9. the motor that electric tool is used, it is characterized in that it comprises: have rotating shaft (10) motor (1), be fixed on brake disc (2) on motor (1), be set in rotating shaft (10) upper and with brake disc (2) contact or the dish shape piece (3) that separates, there is difference in height in center of gravity and the center of wherein said dish shape piece (3), and brake disc (2) and dish shape piece (3) are metalwork, and dish shape piece (3) exists deflection on rotating shaft (10) axial direction.
10. the motor that a kind of electric tool according to claim 9 is used, it is characterized in that: described dish shape piece (3) comprise there is axis hole (300) and be the end face (30) of level, several blades (32) of tilting to be connected with end face (30) and several gaps (34) of interval adjacent blades (32), it is upper that the center of gravity of described dish shape piece (3) is positioned at blade (32), and the center of dish shape piece (3) is positioned at the center of axis hole (300).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310199889.6A CN104170590B (en) | 2013-05-27 | 2013-05-27 | Electric tool and its motor with improvement brake structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310199889.6A CN104170590B (en) | 2013-05-27 | 2013-05-27 | Electric tool and its motor with improvement brake structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104170590A true CN104170590A (en) | 2014-12-03 |
| CN104170590B CN104170590B (en) | 2017-06-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310199889.6A Active CN104170590B (en) | 2013-05-27 | 2013-05-27 | Electric tool and its motor with improvement brake structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN104170590B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871116A (en) * | 2016-06-06 | 2016-08-17 | 苏州金莱克精密机械有限公司 | Linkage brake mechanism for motor |
| CN108683297A (en) * | 2018-05-28 | 2018-10-19 | 胡明 | A kind of motor of with brake mechanism |
| CN108696050A (en) * | 2018-05-28 | 2018-10-23 | 胡明 | A kind of fast-braking method of cutting motor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0525972A1 (en) * | 1991-07-03 | 1993-02-03 | Black & Decker Inc. | Lawn mower |
| EP0903006A1 (en) * | 1996-05-31 | 1999-03-24 | Fhp Elmotor Aktiebolag | Braking system for electric motors |
| US20080264027A1 (en) * | 2007-04-26 | 2008-10-30 | Honda Motor Co., Ltd. | Centrifugal blade brake clutch apparatuses and methods |
| CN101699950A (en) * | 2009-11-04 | 2010-05-05 | 金莱克电气股份有限公司 | Braking device for gardening tools |
| CN202931151U (en) * | 2012-07-23 | 2013-05-08 | 东莞国华新能源汽车科技有限公司 | Integrated disk brake hub motor |
| CN203279534U (en) * | 2013-05-27 | 2013-11-13 | 苏州金莱克精密机械有限公司 | Electric tool with improved brake structure and motor thereof |
-
2013
- 2013-05-27 CN CN201310199889.6A patent/CN104170590B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0525972A1 (en) * | 1991-07-03 | 1993-02-03 | Black & Decker Inc. | Lawn mower |
| EP0903006A1 (en) * | 1996-05-31 | 1999-03-24 | Fhp Elmotor Aktiebolag | Braking system for electric motors |
| US20080264027A1 (en) * | 2007-04-26 | 2008-10-30 | Honda Motor Co., Ltd. | Centrifugal blade brake clutch apparatuses and methods |
| US7849987B2 (en) * | 2007-04-26 | 2010-12-14 | Honda Motor Co., Ltd. | Centrifugal blade brake clutch apparatuses and methods |
| CN101699950A (en) * | 2009-11-04 | 2010-05-05 | 金莱克电气股份有限公司 | Braking device for gardening tools |
| CN202931151U (en) * | 2012-07-23 | 2013-05-08 | 东莞国华新能源汽车科技有限公司 | Integrated disk brake hub motor |
| CN203279534U (en) * | 2013-05-27 | 2013-11-13 | 苏州金莱克精密机械有限公司 | Electric tool with improved brake structure and motor thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871116A (en) * | 2016-06-06 | 2016-08-17 | 苏州金莱克精密机械有限公司 | Linkage brake mechanism for motor |
| CN105871116B (en) * | 2016-06-06 | 2019-02-19 | 苏州金莱克精密机械有限公司 | The linkage braking mechanism of motor |
| CN108683297A (en) * | 2018-05-28 | 2018-10-19 | 胡明 | A kind of motor of with brake mechanism |
| CN108696050A (en) * | 2018-05-28 | 2018-10-23 | 胡明 | A kind of fast-braking method of cutting motor |
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| Publication number | Publication date |
|---|---|
| CN104170590B (en) | 2017-06-13 |
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