CN203279534U - Electric tool with improved brake structure and motor thereof - Google Patents
Electric tool with improved brake structure and motor thereof Download PDFInfo
- Publication number
- CN203279534U CN203279534U CN2013202932603U CN201320293260U CN203279534U CN 203279534 U CN203279534 U CN 203279534U CN 2013202932603 U CN2013202932603 U CN 2013202932603U CN 201320293260 U CN201320293260 U CN 201320293260U CN 203279534 U CN203279534 U CN 203279534U
- Authority
- CN
- China
- Prior art keywords
- motor
- dish shape
- shape piece
- electric tool
- center
- 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
Links
Images
Abstract
The utility model discloses an electric tool with an improved brake structure and a motor thereof. The electric tool comprises the motor provided with a rotary shaft, a brake disc fixedly arranged on the motor and a disc piece sleeved on the rotary shaft and contacted with or separated from the brake disc, wherein height difference exists between the center of gravity of the disc piece and the center of the disc piece. The electric tool disclosed by the utility model in a mode of a motor brake realizes the brake function through friction between the disc piece and the brake disc, so that the electric tool has the advantages of simple structure, good braking effect and the like.
Description
Technical field
The utility model relates to a kind of electric tool and motor thereof with improvement brake structure.
Background technology
Present electric tool, especially four-wheel mower, often comprise bearing 102, be fixed on bearing 102 and be used for the driving wheel 108 of the motor 104 that drives, the belt 106 that an end is connected with the output shaft of motor 104, the also corresponding rotation that is connected with the other end of belt 106 and be fixed in rotating blade 109 in driving wheel 108 rotating shafts as Fig. 1.While needing to shut down in operation way, though after the user cuts off the electricity supply still because of rotating blade under the effect of inertia, can run up a period of time, can't meet security requirement, even can cause personal injury when serious.And according to the requirement of security technique standard, electric tool needs the 1-5 after cutting off the electricity supply to stop operating in second, therefore all brake gear need be installed.The shortcomings such as and brake gear generally is divided into mechanical brake and electromagnetic brake, and the existing machinery brake structure is arranged on electric tool, and structure is comparatively complicated, and electromagnetic brake exists brake unstable, and cost is higher.
The utility model content
The utility model purpose is: a kind of electric tool and motor thereof with improvement brake structure is provided.
The first technical scheme of the present utility model 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 are 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 centre bore that rotating shaft passes 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 at an end that is connected with end face.
Described motor is the stent-type motor.
Horizontal or the bending of the end of described blade.
Described blade becomes gradually on direction from inside to outside large.
The impeller that it further comprises nut, the carbon brush supports adjacent with brake disc of axial restraint dish shape piece and is positioned at the motor other end and is driven by rotating shaft.
The second technical scheme of the present utility model 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 are 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 there is deflection in dish shape piece at 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 at an end that is connected with end face.
Described motor is the stent-type motor.
Horizontal or the bending of the end of described blade.
Described blade becomes gradually on direction from inside to outside large.
The impeller that it further comprises nut, the carbon brush supports adjacent with brake disc of axial restraint dish shape piece and is positioned at the motor other end and is driven by rotating shaft.
Increase by a part between dish shape piece and brake disc, part shape is identical with the dish shape piece shape, comprise the end that has axis hole and be level and the rake that is connected with sloped-end and circumferentially is connected, the axis hole of part is coaxial with the axis hole of dish shape piece, and end and brake disc plane contact and outside the end face of dish shape piece, good braking quality between dish shape piece, part, brake disc three, less than the inclination angle of blade, can be realized thus in the inclination angle of rake.
The utility model advantage is:
The mode that the utility model adopts motor brake, realize brake function by the friction between dish shape piece and brake disc, has the advantages such as simple in structure, that braking effect is good.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples:
Fig. 1 is the structural representation of prior art;
Fig. 2 is the decomposing schematic representation of the utility model motor;
Fig. 3 is the schematic diagram that the utility model motor is in braking state;
Fig. 4 is the in running order schematic diagram of the utility model motor;
Fig. 5 is the schematic diagram of the first form of dish shape piece in the utility model;
Fig. 6 is the schematic diagram of the second form of dish shape piece in the utility model;
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; 32,304, blade; 34,306, gap; 308, projection; 4, nut; 6, impeller.
Embodiment
Embodiment: as shown in Fig. 2-7, the utility model provides a kind of embodiment with electric tool of improvement brake structure, be preferably the four-wheel mower, it comprises motor 1 with rotating shaft 10, be fixed on brake disc 2 on motor 1, be set in rotating shaft 10 and with the nut 4 of brake disc 2 contacts or a dish shape piece 3 that separates and axial restraint dish shape piece 3, the carbon brush supports 5 adjacent with brake disc 2 be positioned at the motor other end and by the impeller 6 of rotating shaft 10 drives, there are difference in height in center of gravity and the center of wherein said dish shape piece 3.
The utility model provides a kind of embodiment that is applied to the motor in electric tool, it comprises motor 1 with rotating shaft 10, be fixed on brake disc 2 on motor 1, be set in rotating shaft 10 and with brake disc 2 contacts or the dish shape piece 3 that separates, there are 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 in dish shape piece 3 at axial direction, to guarantee that brake disc 2 and dish shape piece 3 break away 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 are connected with end face 30 inclinations 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 300De 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 blades 304 that dish shape piece 31 comprises the end face 302 that is level, tilt to be connected with end face 302, several gaps 306 of interval adjacent blades 304 and be correspondingly positioned at blade 304 ends and can be with brake disc 2 against a projection 308 that contacts, the center of gravity of dish shape piece 31 is positioned on blade 304, and dish shape piece 31De 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 utility model, can increase by a part between dish shape piece and brake disc, part shape is identical with the dish shape piece shape, comprise the end that has axis hole and be level and the rake that is connected with sloped-end and circumferentially is connected, the axis hole of part is coaxial with the axis hole of dish shape piece, and end and brake disc plane contact and outside the end face of dish shape piece, good braking quality between dish shape piece, part, brake disc three, less than the inclination angle of blade, can be realized thus in the inclination angle of rake.
Certainly above-described embodiment only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalent transformation or modifications of doing according to the Spirit Essence of the utility model main technical schemes, within all should being encompassed in protection domain of the present utility model.
Claims (10)
1. one kind has the electric tool of improveing 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 are 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.
According to claim 1 and 2 a kind of have the improvement brake structure electric tool, it is characterized in that: described dish shape piece (3) comprise have axis hole (300) and be level end face (30), with end face (30) tilt several blades (32) be connected and several gaps (34) of interval adjacent blades (32), the center of gravity of described dish shape piece (3) is positioned on blade (32), and the center of dish shape piece (3) is positioned at the center of axis hole (300).
According to claim 3 a kind of have the improvement brake structure electric tool, it is characterized in that: described gap (34) are curved at least partly at an end that is connected with end face (30).
According to claim 1 and 2 a kind of have the improvement brake structure electric tool, it is characterized in that: described motor (1) is the 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, it is characterized in that: described blade (32) becomes large gradually on 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 nut (4), the carbon brush supports (5) adjacent with brake disc (2) of axial restraint dish shape piece (3) and is positioned at the motor other end and by the impeller (6) of rotating shaft (10) drive.
9. 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 are 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 there is deflection in dish shape piece (3) at rotating shaft (10) axial direction.
10. the motor used of a kind of electric tool according to claim 9, it is characterized in that: described dish shape piece (3) comprise have axis hole (300) and be level end face (30), with end face (30) tilt several blades (32) be connected and several gaps (34) of interval adjacent blades (32), the center of gravity of described dish shape piece (3) is positioned on 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 |
|---|---|---|---|
| CN2013202932603U CN203279534U (en) | 2013-05-27 | 2013-05-27 | Electric tool with improved brake structure and motor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202932603U CN203279534U (en) | 2013-05-27 | 2013-05-27 | Electric tool with improved brake structure and motor thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203279534U true CN203279534U (en) | 2013-11-13 |
Family
ID=49535923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202932603U Expired - Lifetime CN203279534U (en) | 2013-05-27 | 2013-05-27 | Electric tool with improved brake structure and motor thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203279534U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104170590A (en) * | 2013-05-27 | 2014-12-03 | 苏州金莱克精密机械有限公司 | Electric tool with improved brake structure and electric motor of electric tool |
-
2013
- 2013-05-27 CN CN2013202932603U patent/CN203279534U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104170590A (en) * | 2013-05-27 | 2014-12-03 | 苏州金莱克精密机械有限公司 | Electric tool with improved brake structure and electric motor of electric tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101731933B (en) | Anti-locked-rotor juicer | |
| CN104170590A (en) | Electric tool with improved brake structure and electric motor of electric tool | |
| CN203279534U (en) | Electric tool with improved brake structure and motor thereof | |
| CN103168567B (en) | The dead-man's device of garden instrument | |
| CN205231929U (en) | Tubular motor's electromagnetic clutch device | |
| CN204658118U (en) | A kind of powder metallurgy pressing plate for angle grinding machine | |
| CN103812306B (en) | A kind of permanent magnetic coupling position limiting structure | |
| CN204030918U (en) | A kind of permanent magnetic coupling position limiting structure | |
| CN202833720U (en) | Clutch driven plate structure | |
| CN204652135U (en) | Solid rotor box hat brake motor | |
| CN202455866U (en) | Automatic brake device of garden instrument | |
| CN203261787U (en) | Brake device and gardening tool adopting same | |
| CN210686770U (en) | Self-balancing brake capable of preventing vertical installation from generating harmful friction | |
| CN202773444U (en) | Grass trimmer motor brake device | |
| CN105782383A (en) | Permanent magnet transmission device of pumping unit and pumping unit | |
| CN203109749U (en) | Grinding mechanism of grinding device | |
| CN205414429U (en) | Permanent magnetism synchronization electric main shaft structure of wedge air gap | |
| CN102836756A (en) | Hammer type grinder blade | |
| CN205639517U (en) | Beam -pumping unit permanent magnetism transmission and beam -pumping unit | |
| CN103441610B (en) | A kind of braking motor | |
| CN202384615U (en) | Groove type commutator segment for commutator | |
| CN209184402U (en) | A kind of motor with braking mechanism | |
| CN102720776A (en) | Short extension side system magnetic conductive electromagnetic fan clutch | |
| CN204013058U (en) | A kind of brushless electric machine | |
| CN204150879U (en) | A kind of inner-rotor type towing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131113 |
|
| CX01 | Expiry of patent term |