CN214256013U - Brake structure and electronic garden instrument - Google Patents
Brake structure and electronic garden instrument Download PDFInfo
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- CN214256013U CN214256013U CN202022633569.5U CN202022633569U CN214256013U CN 214256013 U CN214256013 U CN 214256013U CN 202022633569 U CN202022633569 U CN 202022633569U CN 214256013 U CN214256013 U CN 214256013U
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- brake
- brake disc
- motor
- contact piece
- elastic contact
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Abstract
The utility model discloses a brake structure and an electric garden tool, which comprises a motor, a brake pad and a brake disc, wherein the brake pad is fixedly connected with the motor, an output shaft of the motor is fixedly sleeved with a driving gear, the inner surface of the brake disc is provided with an inner gear which is meshed with the driving gear, the brake disc is provided with at least one elastic contact piece, and the elastic contact piece is attached to the brake pad; after the motor is started, the brake disc is driven to rotate, the elastic contact piece overcomes the self elastic force to separate from the brake pad under the action of centrifugal force, the rotating speed of the brake disc is reduced after the motor is turned off, and the self elastic force of the elastic contact piece overcomes the centrifugal force to contact and rub with the brake pad. Compared with the prior art, the utility model the use of spare part has been reduced, and the structure is more simple and convenient, and occupation space is littleer. Meanwhile, the transmission precision is higher, the structure is more stable, the braking reaction is faster, and the phenomenon of slipping in belt transmission can not occur.
Description
Technical Field
The utility model belongs to the garden equipment field especially relates to a brake structure and electronic garden instrument.
Background
Along with garden instrument's development, electric garden instrument of many types has appeared on the market, and these electric garden instruments generally need the motor to drive and carry out work, and the current brake structure part that is used for the motor is more, the structure is complicated, occupation space is great, is very unsuitable for garden electric instrument's volume. The most commonly used belt brake mode transmission efficiency is lower, still has the problem of easy slipping, can cause the brake reaction slow when the problem of skidding appears, probably causes personnel's injury this moment.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a brake structure and electronic garden instrument, the brake structure part that can effectively solve among the prior art motor is more, the structure is complicated, the great problem of occupation space to the brake reaction is fast.
In order to solve the technical problem, the utility model adopts the following technical scheme: a brake structure comprises a motor, a brake pad and a brake disc, wherein the brake pad is fixedly connected with the motor, an output shaft of the motor is fixedly sleeved with a driving gear, the inner surface of the brake disc is provided with an inner gear which is meshed with the driving gear, the brake disc is provided with at least one elastic contact piece, and the elastic contact piece is attached to the brake pad; after the motor is started, the brake disc is driven to rotate, the elastic contact piece overcomes the self elastic force to separate from the brake pad under the action of centrifugal force, the rotating speed of the brake disc is reduced after the motor is turned off, and the self elastic force of the elastic contact piece overcomes the centrifugal force to contact and rub with the brake pad.
Preferably, the brake pad cover body is further included, and the brake pad is fixedly connected with the motor through the brake pad cover body. Through setting up the brake block cover body, the fixed connection of brake block and motor of being convenient for.
Preferably, a brake disc bottom plate is fixedly connected to the lower portion of the brake pad cover body, the brake disc is located between the brake pad cover body and the brake disc bottom plate, and the brake disc is rotatably connected with the brake pad cover body and the brake disc bottom plate. Set up brake disc bottom plate and brake block cover body and cooperate, brake block and brake disc are located between the brake disc bottom plate and the brake block cover body, convenient assembly on the one hand, and on the other hand can save spare part occupation space, reduces the whole volume of brake structure.
Preferably, a rotating shaft is fixedly arranged in the center of the brake disc in a penetrating mode, a first bearing matched with the upper end of the rotating shaft is arranged on the inner surface of the brake pad cover body, and a second bearing matched with the bottom end of the rotating shaft is arranged on the inner surface of the brake disc bottom plate. Through setting up the pivot and cooperating with first bearing and second bearing, when the motor drives the brake disc through driving gear and internal gear meshing transmission and rotates, the rotation of the relative brake block cover body and brake disc bottom plate just can be realized to the brake disc, through all setting up the bearing at the pivot both ends, can guarantee brake disc pivoted stability, reduces and radially rocks.
Preferably, the elastic contact piece comprises a deformation section, a connecting section and a friction section, the deformation section is connected with the brake disc, the connecting section is connected between the deformation section and the friction section, and the friction section is attached to the brake pad. The deformation section is arranged for generating elastic deformation under the action of centrifugal force when the motor is started to drive the brake disc to rotate, so that the friction section is separated from the brake pad; after the motor is turned off, the deformation section is restored to the original shape under self elastic deformation, so that the friction section is contacted with the brake pad to generate friction, the braking effect is realized, and the motor is rapidly braked.
Preferably, deformation section one end is connected with the brake disc, and the deformation section is the arc and extends to the direction of keeping away from the brake disc to the deformation section is the open-ended arc that makes progress. The deformation section is designed into an arc shape with an upward opening, so that the deformation section is convenient to elastically deform, and the process of separating or contacting the friction section and the brake pad can be faster.
Preferably, the upper surface of the friction segment is flush with the lower surface of the brake pad. The setting can increase the area of contact of friction section and brake block like this, and braking effect when reinforcing the brake makes the brake more quick.
Preferably, the elastic contact piece has three pieces, and the elastic contact pieces are uniformly arranged along the circumferential direction of the brake disc. The number that increases the elasticity contact piece can be when the motor braking effectual improvement friction effect, and further make the brake reaction faster, combines the actual size of brake disc, sets up the elasticity contact piece into three comparatively suitable pieces, both can play the effect that improves the brake reaction, the overall arrangement setting of being convenient for again. And meanwhile, the three elastic contact pieces are uniformly arranged along the circumferential direction of the brake disc, so that the friction action of the brake pad and the elastic contact pieces is uniformly distributed during braking, and the brake pad is prevented from shaking during braking.
Preferably, the brake block has three brake blocks, the three brake blocks are all in a sector ring shape, and adjacent brake blocks are spaced at equal intervals. Because there is the interval between the adjacent brake block, there is the condition of not taking place the friction in elasticity contact piece and the mutual rotation in-process of brake block when the motor starts, is favorable to elasticity contact piece to take place elastic deformation and brake block separation under the effect of centrifugal force under this kind of condition, can reduce the friction time of brake block and elasticity contact piece among the motor start-up process, increases the life of brake structure.
In order to solve the technical problem, the utility model discloses still adopt following technical scheme: an electric garden tool comprises a brake structure provided by any one of the technical schemes. Owing to adopted foretell brake structure, this electronic garden instrument brake reaction is faster, and brake structural design wherein occupation space is littleer simultaneously for this electronic garden instrument also can reduce the design volume, accords with the miniaturized trend of electronic garden instrument equipment more.
Compared with the prior art, the utility model discloses following beneficial effect has: through the arrangement of the brake pad fixedly connected with the motor and the brake disc driven by the output shaft to rotate, the elastic contact piece arranged on the brake disc is separated from the brake pad by utilizing the centrifugal force generated by the rotation of the output shaft after the motor is started, and the brake structure does not work. After the motor is turned off, the rotating speed of the output shaft is reduced, the centrifugal force is reduced, the elastic contact piece is elastically deformed to overcome the centrifugal force and restore to the original state, the elastic contact piece is contacted with the brake pad to generate friction, and the brake structure plays a role in stopping the motor from rotating. Also the utility model discloses in carry out the integrated design with the transmission structure of brake structure and motor, reduced the use of spare part for the brake structure among the prior art, the structure is more simple and convenient, and occupation space is littleer. Additionally the utility model discloses in adopt driving gear and the driven mode of internal gear meshing, for prior art in the belt drive, gear drive structural design occupation space is littleer, and transmission precision is higher simultaneously, and the structure is also more stable, and the brake reaction is faster, can not take place the phenomenon of skidding in the belt drive.
Drawings
Fig. 1 is an exploded view of a brake structure provided by the present invention;
FIG. 2 is a cross-sectional view of a brake structure provided by the present invention;
fig. 3 is an enlarged schematic view of portion a of fig. 1.
Wherein: 1. the brake comprises a motor, 10 output shafts, 11 driving gears, 2 brake pads, 3 brake discs, 30 internal gears, 31 rotating shafts, 4 elastic contact pieces, 40 deformation sections, 41 connecting sections, 42 friction sections, 5 brake pad cover bodies, 50 first bearings, 6 brake disc bottom plates and 60 second bearings.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected or detachably connected or integrated; may be mechanically coupled, may be electrically coupled or may be in communication with each other; may be directly connected or indirectly connected through an intermediate, unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The first embodiment is as follows: as shown in fig. 1 and fig. 2, the brake structure provided in this embodiment includes a motor 1, a brake pad 2 and a brake disc 3, wherein the brake pad 2 is fixedly connected with the motor 1, an output shaft 10 of the motor 1 is fixedly sleeved with a driving gear 11, an inner gear 30 engaged with the driving gear 11 is disposed on an inner surface of the brake disc 3, at least one elastic contact piece 4 is disposed on the brake disc 3, and the elastic contact piece 4 is attached to the brake pad 2; after the motor 1 is started, the brake disc 3 is driven to rotate, the elastic contact piece 4 overcomes the self elastic force to separate from the brake pad 2 under the action of centrifugal force, the rotating speed of the brake disc 3 is reduced after the motor 1 is closed, and the self elastic force of the elastic contact piece 4 overcomes the contact friction between the centrifugal force and the brake pad 2.
The utility model discloses in having carried out the integrated design with the transmission structure of brake structure and motor 1, reduced the use of spare part for the brake structure among the prior art, the structure is more simple and convenient, utilizes motor 1 to start the centrifugal force that the output shaft 10 rotated the production and overcomes the elastic force of elastic contact piece 4 self, makes the elastic contact piece 4 and the separation of brake block 2 that set up on brake disc 3, and the brake structure is inoperative. After the motor 1 is turned off, the rotating speed of the output shaft 10 is reduced, the centrifugal force is reduced, the elastic contact piece 4 is elastically deformed to overcome the centrifugal force and restore to the original state, the elastic contact piece 4 is contacted with the brake pad 2 to generate friction, and the brake structure plays a role, so that the motor 1 stops rotating. The utility model discloses in adopt driving gear 11 and the driven mode of internal gear 30 meshing, for prior art in the belt drive, gear drive structural design occupation space is littleer, and the transmission precision is higher simultaneously, and the structure is also more stable, can not take place the phenomenon of skidding in the belt drive, therefore this brake structure that this embodiment provided makes motor 1 brake reaction faster, can effectively avoid among the prior art because the untimely condition that causes bodily injury of brake takes place. It should be further noted that, in this embodiment, the elastic contact piece is used instead of the common spring, considering that the elastic contact piece has better stability, because the operation such as cutting and trimming is often involved in the actual use process of the garden electric tool, so that the tool itself generates large vibration, if the elastic contact piece is replaced by the spring, when the tool is in a working state, the spring expands and contracts due to vibration and generates friction with the brake pad, so that a braking action is generated, and the normal use of the electric tool is affected, so the elastic brake pad with better stability is used in this embodiment.
In this embodiment, the below fixedly connected with brake disc bottom plate 6 of the brake block cover body 5, it is fixed to adopt bolted connection's mode between the brake block cover body 5 and the brake disc bottom plate 6, the brake block cover body 5 is the lid with brake disc bottom plate 6 and closes the form, it holds the chamber to form between, brake disc 3 is located and holds the intracavity, brake disc 3 all rotates with the brake block cover body 5 and brake disc bottom plate 6 and is connected, specifically speaking, 3 centers at the brake disc and fixedly wear to be equipped with pivot 31, the internal surface of the brake block cover body 5 is equipped with the first bearing 50 of upper end matched with pivot 31, the internal surface of brake disc bottom plate 6 is equipped with the second bearing 60 with pivot 31's bottom matched with. Set up brake disc bottom plate 6 and the brake block cover body 5 and cooperate, brake block 2 is located between brake disc bottom plate 6 and the brake block cover body 5 with brake disc 3, on the one hand convenient assembly, and on the other hand can save spare part occupation space, reduces the whole volume of brake structure. Through set up first bearing 50 and second bearing 60 respectively at pivot 31 both ends, can guarantee brake disc 3 pivoted stability, reduce and radially rock.
Referring to fig. 3, in the present embodiment, the elastic contact piece 4 includes a deformation section 40, a connection section 41 and a friction section 42, the deformation section 40 is connected to the brake disc 3, the connection section 41 is connected between the deformation section 40 and the friction section 42, and the friction section 42 is attached to the brake pad 2. The deformation section 40 is arranged for generating elastic deformation under the action of centrifugal force when the motor 1 is started to drive the brake disc 3 to rotate, so that the friction section 42 is separated from the brake pad 2; after the motor 1 is closed, the deformation section 40 is restored under self elastic deformation, so that the friction section 42 is contacted with the brake pad 2 to generate friction, the braking effect is realized, and the motor 1 is rapidly braked.
Wherein, for guaranteeing brake braking rapidly, be connected deformation section 40 one end and brake disc 3 in this embodiment, deformation section 40 is the arc and extends to the direction of keeping away from brake disc 3 to deformation section 40 is the open-ended arc that makes progress. The deformation section 40 is designed to be an arc shape with an upward opening, so that the deformation section 40 is convenient to elastically deform, and the process of separating or contacting the friction section 42 with the brake pad 2 can be faster. The upper surface of the friction segment 42 is flush with the lower surface of the brake pad 2. The setting can increase the area of contact of friction section 42 and brake block 2 like this, and the braking effect when reinforcing the brake makes the brake more quick.
The resilient contact pieces 4 are provided in three pieces in this embodiment, and the resilient contact pieces 4 are arranged uniformly in the circumferential direction of the brake disc 3. The number that increases elastic contact piece 4 can be at 1 effectual improvement friction effect of braking of motor, further makes the brake reaction faster, combines 3 actual sizes of brake disc, sets up elastic contact piece 4 into three comparatively suitable pieces, both can play the effect that improves the brake reaction, the overall arrangement setting of being convenient for again. Simultaneously, the three elastic contact pieces 4 are uniformly arranged along the circumferential direction of the brake disc 3, so that the friction action of the brake pad 2 and the elastic contact pieces 4 is uniformly distributed when the brake is performed, and the brake is prevented from shaking in the braking process.
Correspondingly, the brake pad 2 in this embodiment also has three brake pads, and the three brake pads 2 are all in a sector ring shape, and adjacent brake pads 2 have equal intervals. Because there is the interval between the adjacent brake block 2, there is the condition that does not take place the friction in the elastic contact piece 4 and the 2 rotation process of brake block when motor 1 starts, is favorable to elastic contact piece 4 to take place elastic deformation and brake block 2 separation under the effect of centrifugal force under this condition, can reduce the friction time of 1 start-up in-process brake block 2 of motor and elastic contact piece 4, increases the life of brake structure.
Example two: the embodiment provides an electric garden tool, which comprises the brake structure provided in the embodiment. Owing to adopted foretell brake structure, this electronic garden instrument brake reaction is faster, and brake structural design wherein occupation space is littleer simultaneously for this electronic garden instrument also can reduce the design volume, accords with the miniaturized trend of electronic garden instrument equipment more.
The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto, and any person skilled in the art can make changes or modifications within the scope of the present invention.
Claims (10)
1. A brake structure, its characterized in that: the brake disc comprises a motor (1), a brake pad (2) and a brake disc (3), wherein the brake pad (2) is fixedly connected with the motor (1), an output shaft (10) of the motor (1) is fixedly sleeved with a driving gear (11), an inner gear (30) which is meshed with the driving gear (11) is arranged on the inner surface of the brake disc (3), and at least one elastic contact piece (4) is arranged on the brake disc (3); the motor (1) drives the brake disc (3) to rotate after being started, the elastic contact piece (4) overcomes self elastic force and the brake pad (2) is separated under the action of centrifugal force, the rotating speed of the brake disc (3) is reduced after the motor (1) is closed, and the elastic contact piece (4) overcomes the centrifugal force and the brake pad (2) is in contact friction.
2. A brake structure according to claim 1, wherein: the brake pad cover body (5) is further included, and the brake pad (2) is fixedly connected with the motor (1) through the brake pad cover body (5).
3. A brake structure according to claim 2, wherein: the brake disc is characterized in that a brake disc bottom plate (6) is fixedly connected to the lower portion of the brake block cover body (5), the brake disc (3) is located between the brake block cover body (5) and the brake disc bottom plate (6), and the brake disc (3) is rotatably connected with the brake block cover body (5) and the brake disc bottom plate (6).
4. A brake structure according to claim 3, wherein: the fixed pivot (31) that wears to be equipped with in brake disc (3) center, the internal surface of the brake block cover body (5) be equipped with the upper end matched with first bearing (50) of pivot (31), the internal surface of brake disc bottom plate (6) be equipped with the bottom matched with second bearing (60) of pivot (31).
5. A brake construction according to any one of claims 1 to 4, wherein: elasticity contact piece (4) are including deformation section (40), linkage segment (41) and friction segment (42), deformation section (40) are connected with brake disc (3), linkage segment (41) are connected between deformation section (40) and friction segment (42), friction segment (42) and brake block (2) laminating.
6. A brake structure according to claim 5, wherein: deformation section (40) one end is connected with brake disc (3), deformation section (40) are the arc and extend to the direction of keeping away from brake disc (3), and deformation section (40) are the open-ended arc that makes progress.
7. A brake structure according to claim 5, wherein: the upper surface of the friction section (42) is flush with the lower surface of the brake pad (2).
8. A brake structure according to claim 1, wherein: the number of the elastic contact pieces (4) is three, and the elastic contact pieces (4) are uniformly arranged along the circumferential direction of the brake disc (3).
9. A brake structure according to claim 8, wherein: the brake block (2) is provided with three blocks, the brake blocks (2) are all in a sector ring shape, and equal intervals are reserved between the adjacent brake blocks (2).
10. An electric gardening tool is characterized in that: a brake construction comprising any one of the preceding claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022633569.5U CN214256013U (en) | 2020-11-13 | 2020-11-13 | Brake structure and electronic garden instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022633569.5U CN214256013U (en) | 2020-11-13 | 2020-11-13 | Brake structure and electronic garden instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214256013U true CN214256013U (en) | 2021-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022633569.5U Active CN214256013U (en) | 2020-11-13 | 2020-11-13 | Brake structure and electronic garden instrument |
Country Status (1)
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|---|---|
| CN (1) | CN214256013U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115122100A (en) * | 2022-07-07 | 2022-09-30 | 深圳市华创电机科技有限公司 | High-stability ripple type torque motor for turning and milling composite machine tool |
-
2020
- 2020-11-13 CN CN202022633569.5U patent/CN214256013U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115122100A (en) * | 2022-07-07 | 2022-09-30 | 深圳市华创电机科技有限公司 | High-stability ripple type torque motor for turning and milling composite machine tool |
| CN115122100B (en) * | 2022-07-07 | 2023-12-12 | 深圳市华创电机科技有限公司 | High-stability ripple type torque motor for turning and milling composite machine tool |
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Address after: No. 150 Wenlong Road, Yuxin Town, Nanhu District, Jiaxing City, Zhejiang Province Patentee after: Zhejiang Yate Electric Appliance Co.,Ltd. Address before: No. 150 Wenlong Road, Yuxin Town, Nanhu District, Jiaxing City, Zhejiang Province Patentee before: ZHEJIANG YAT ELECTRICAL APPLIANCE Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |