CN203979210U - A kind of drum is stopped - Google Patents
A kind of drum is stopped Download PDFInfo
- Publication number
- CN203979210U CN203979210U CN201420464191.2U CN201420464191U CN203979210U CN 203979210 U CN203979210 U CN 203979210U CN 201420464191 U CN201420464191 U CN 201420464191U CN 203979210 U CN203979210 U CN 203979210U
- Authority
- CN
- China
- Prior art keywords
- drive plate
- brake block
- drum
- arresting disk
- groove
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model relates to a kind of drum to be stopped, and belongs to Vehicular brake device field, has solved the poor problem of drum brakes braking effect.A kind of drum is stopped, the drive unit that comprises housing, brake block assembly and drive described brake block assembly to move, described brake block assembly comprises at least two brake blocks, between the end of adjacent two brake blocks, connect by elastic element, described drive unit comprises position-arresting disk and at least one drive plate can relative limit dish being rotated, described position-arresting disk and described drive plate arranged stacked, described position-arresting disk edge is provided with restraining groove, in described restraining groove, be provided with roller, described drive plate rotarily drives the inner side surface of described roller pushing and pressing brake block.
Description
Technical field
The utility model relates to a kind of drum to be stopped, and belongs to Vehicular brake device field.
Background technique
Drum brakes is a kind of conventional mode of braking of vehicle.Existing drum brakes comprises housing, is provided with two brake blocks and pushing block in housing, and pushing block promotes the outwards mobile housing that is adjacent to of brake block, and and housing between produce friction so that housing stops operating.After wheel contacts with brake block, will provide a radial force to brake block, because brake block contacts with pushing block, radial force also can indirectly-acting on pushing block, existing pushing block can only move linearly, after radial force that pushing block is subject to is excessive, pushing block will fracture.And existing pushing block just promotes brake block and moves in end, brake block does not probably contact wheel at the outer side surface away from pushing block, thereby causes the area of contact of brake block and wheel too small, braking effect variation.
Summary of the invention
Problem to be solved in the utility model has just been to provide a kind of drum and has stopped, and has solved the poor problem of drum brakes braking effect.
For addressing the above problem, the utility model provides following technological scheme: a kind of drum is stopped, comprise housing, brake block assembly and the drive unit that drives described brake block assembly to move, described brake block assembly comprises at least two brake blocks, between the end of adjacent two brake blocks, connect by elastic element, described drive unit comprises position-arresting disk and at least one drive plate can relative limit dish being rotated, described position-arresting disk and described drive plate arranged stacked, described position-arresting disk edge is provided with restraining groove, in described restraining groove, be provided with roller, described drive plate rotarily drives the inner side surface of described roller pushing and pressing brake block.
Brake block of the present utility model, promotes roller by drive plate brake block is outwards moved, and different brake blocks synchronously moves towards wheel direction, and contacts and produce friction with the wheel of rotation.Roller moves radially except synchronously promoting brake block, and roller has also increased the join strength between brake block and drive plate.After brake block just contacts with the wheel of High Rotation Speed, wheel will provide a radial force to brake block, brake block can be by radial force indirect transfer to roller, roller is subject to after radial force, thereby can be by rotating the extruding force weakening from brake block, this structure can effectively increase the braking effect that drum is stopped, and improves the braking safe performance that drum is stopped, and rouses the working life of stopping.
Further, at least one described drive plate is arranged on described position-arresting disk below.
Further, at least one described drive plate is arranged on described position-arresting disk top.
Further, described drive plate is the ratchet with ratchet, and described ratchet is positioned at the position of the corresponding described brake block of ratchet, and described drive plate promotes described roller by described ratchet.Drive plate is ratchet, when in drive plate relative limit dish rotation process, ratchet circumferentially moves with drive plate, roller moves towards tooth top direction from the tooth root of ratchet, and promote brake block and move to housing inner side surface direction, roller is a mobile segment distance on ratchet, the inner side surface of the outer side surface contact wheel of brake block, the wheel rotating produces friction with brake block after touching brake block, thereby reduces the rotating speed of wheel.Promote brake block by roller and move, so that different brake blocks is synchronous outwards mobile, contacts with wheel, thereby effectively increased the area of contact between brake block and wheel, improved the braking effect of brake block.
Further, described drive unit also comprises the spacing cover plate that is positioned at described position-arresting disk top.After the raw circumferentially rotation of drive plate relative limit hair updo, drive plate can apply an active force radially to roller, position-arresting disk can apply a reaction force radially to roller, drive plate and position-arresting disk impose on after roller radial force, active force and reaction force can produce a component in the axial direction of roller, and component can drive roller to move axially.Now, the bottom end of spacing cover plate, by contacting the top end of roller, can avoid roller to exit in groove or restraining groove.
Further, described spacing cover plate, described drive plate and described position-arresting disk are connected by the pin axially arranging, and described position-arresting disk is provided with arcuate socket, and described pin is through described arcuate socket.Pin holds together spacing cover plate, drive plate and position-arresting disk, avoid spacing cover plate, drive plate and position-arresting disk three to move to axial and separate, pin has limited the angle of swing of position-arresting disk through arcuate socket, thereby avoid position-arresting disk angle of swing excessive, and cause roller to roll, thereby affect the braking ability of brake block between multiple ratchets.
Further, described shell bottom wall is provided with position-limited lever, and described position-limited lever top is provided with boss, and described drive plate is provided with restraining groove and dodges groove, described position-limited lever is through described restraining groove, and the width of described boss is dodged between groove groove width and described restraining groove groove width between described.Position-limited lever defines the revolvable angular range of the relative housing of drive plate.If drive plate angle of swing is much, roller will move in two gaps between adjacent brake block, thus the active force that causes brake block to lose moving radially, and under the effect of elastic element, brake block can move and separate with wheel towards drive unit direction.Boss can through dodging groove, be dodged in groove so that position-limited lever inserts, and after drive plate rotates in a circumferential direction, position-limited lever can insert in restraining groove, and now, can the conflict upper-end surface of drive plate of boss, avoids drive plate to move axially.
Further, described shell bottom wall is provided with the first guide pad, and described brake block bottom end is provided with the second guide pad, and the side laminating of the side of described the first guide pad and described the second guide pad, guides the radial motion of described brake block.After the side of the side of the first guide pad and the second guide pad is bonded to each other, define the track that moves radially of brake block, this structure avoids brake block to rotate in a circumferential direction, and mutually staggers with roller.
Further, described drum is stopped and is also comprised the rocking arm being rotationally connected with on described housing, and one end that described rocking arm stretches in described housing is connected with gear, and described gear is meshed with described drive plate.Rocking arm drives drive plate rotation, so that the life of drive plate relative limit hair updo rotates in a circumferential direction.
Further, described housing bottom is provided with the positive stop lug boss raising up, and described positive stop lug boss is through drive plate, and described positive stop lug boss and described drive plate concentric.This structure avoids drive plate to move radially.
Brief description of the drawings
Fig. 1 is the erection drawing that a kind of drum of the utility model is stopped;
Fig. 2 is the explosive view that a kind of drum of the utility model is stopped;
Fig. 3 is the part assembly drawing that a kind of drum of the utility model is stopped.
Embodiment
With reference to Fig. 1, Fig. 2 and Fig. 3, a kind of drum is stopped, comprise housing 1, on housing 1, be provided with brake block assembly 2, drive unit and rocking arm 10, brake block assembly 2 comprises first brake sheet 21, the second brake block 22 and the 3rd brake block 23, first brake sheet 21, the second brake block 22 and the 3rd brake block 23 are arc brake sheet, and the shape and structure of first brake sheet 21, the second brake block 22 and the 3rd brake block 23 is in full accord, and three can replace use mutually.First brake sheet 21, the second brake block 22 and the 3rd brake block 23 are evenly arranged on housing 1, and the center of circle of first brake sheet 21, the center of circle of the second brake block 22 and the coincidence of the center of circle of the 3rd brake block 23 are gone up on one point.The bottom end of first brake sheet 21 links together by the bottom end elasticity of spring 9 and the second brake block 22, the bottom end of first brake sheet 21 links together by the bottom end elasticity of spring 9 and the 3rd brake block 23, and the bottom end of the second brake block 22 links together by the bottom end elasticity of spring 9 and the 3rd brake block 23.
With reference to Fig. 1, Fig. 2 and Fig. 3, drive unit is disposed with spacing cover plate 6, the second drive plate 5, position-arresting disk 4 and the first drive plate 3 from top to bottom, pin 7 runs through spacing cover plate 6, the second drive plate 5, position-arresting disk 4 and the first drive plate 3 successively, spacing cover plate 6, the second drive plate 5, position-arresting disk 4 and the first drive plate 3 are fixed together, avoid a part or several part in spacing cover plate 6, the second drive plate 5, position-arresting disk 4 and the first drive plate 3 to move to axial.The edge of the first drive plate 3 is provided with the first driven tooth 32 and the first ratchet 31, 31 adjacent of the first ratchets are provided with the first groove 311, on the first drive plate 3, be provided with six the first grooves 311, six the first grooves 311 are evenly distributed in the first drive plate 3 weeks upwards, on position-arresting disk 4, be provided with six restraining grooves 41, the degree of depth of restraining groove 41 is greater than the degree of depth of the first groove 311, six respectively corresponding six the first grooves 311 of restraining groove 41, the edge of the second drive plate 5 is provided with the second driven tooth and the second ratchet 51, 51 adjacent of the second ratchets are provided with the second groove 511, on the second drive plate 5, be provided with six the second grooves 511, corresponding the first driven tooth 32 of the second driven tooth, six corresponding six the first grooves 311 of the second groove 511, shape and the structure of the shape of the second drive plate 5 and structure and the first drive plate 3 are in full accord, the two can be replaced mutually.Between drive unit and brake block assembly 2, be provided with six rollers 8, roller 8 can insert the first groove 311, restraining groove 41 and the second groove 511 simultaneously, the side of roller 8 contacts sidewall, the sidewall of restraining groove 41 and the sidewall of the second groove 511 of the first groove 311, and the top end of roller 8 contacts the bottom end of spacing cover plate 6.
With reference to Fig. 2, on rocking arm 10, be provided with gear 101, gear 101 engages with the first driven tooth 32, and gear 101 engages with the second driven tooth.
With reference to Fig. 2 and Fig. 3, working principle of the present utility model, need to brake time, taking the central shaft of gear 101 as initial point rotating arm 10; rocking arm 10 driven gears 101 rotate; gear 101 drives the first driven tooth 32 and the rotation of the second driven tooth, and the first driven tooth 32 drives the first drive plate 3 to be rotated counterclockwise, and the second driven tooth drives the second drive plate 5 to be rotated counterclockwise.Relative the first drive plate 3 and the second drive plate 5, position-arresting disk 4 does not rotate or rotational speed is less than the rotational speed of the first drive plate 3 and the rotational speed of the second drive plate 5, because position-arresting disk 4 is different from the rotational speed of the first drive plate 3 and the second drive plate 5, restraining groove 41 will stagger in the first groove 311 and the second groove 511, now, the sidewall contact of the first groove 311 and the second groove 511 and roller 8, and for the active force in 8 one diametric(al)s of roller is provided, the direction of active force is identical with the sense of rotation of the second drive plate 5 with the sense of rotation of the first drive plate 3, restraining groove 41 also with the sidewall contact of roller 8, and for roller 8 provides the active force in a diametric(al), the direction of active force is contrary with the sense of rotation of the first drive plate 3.The active force that gives roller 8 due to restraining groove 41 is less than the first drive plate 31 and the second drive plate 51 and gives the active force of roller 8, and roller 8 exits in the first groove 311 and the second groove 511.Roller 8 is exiting in the process of the first groove 311 and the second groove 511, contacts side surfaces first brake sheet 21, the second brake block 22 and the 3rd brake block 23 threes' of roller 8 inner side surface, and promoting first brake sheet 21, the second brake block 22 and the 3rd brake block 23 synchronously moves to wheel direction, thereby make first brake sheet 21, the second brake block 22 and the 3rd brake block 23 contact and produce friction with the wheel of rotation, so that reduce the rotating speed of wheel.
With reference to Fig. 2 and Fig. 3, when wheel travels, taking the central shaft of gear 101 as initial point rotating arm 10; rocking arm 10 driven gears 101 rotate; gear 101 drives the first driven tooth 32 and the rotation of the second driven tooth; the first driven tooth 32 drives the first drive plate 3 to turn clockwise, and the second driven tooth drives the second drive plate 5 to turn clockwise.Relative the first drive plate 3 and the second drive plate 5, position-arresting disk 4 does not rotate or rotational speed is less than the rotational speed of the first drive plate 3 and the rotational speed of the second drive plate 5, because position-arresting disk 4 is different from the rotational speed of the first drive plate 3 and the second drive plate 5, restraining groove 41 will slowly coincide together in the first groove 311 and the second groove 511.In the process overlapping with the first groove 311 and the second groove 511 at restraining groove 41, roller 8 can move radially and insert in the first groove 311 and the second groove 511, first brake sheet 21, the second brake block 22 and the 3rd brake block 23 are after the thrust losing in roller 8 diametric(al)s, spring 9 shortens contraction, drive first brake sheet 21, the second brake block 22 to move with roller 8 with the 3rd brake block 23, thereby separate with wheel, wheel can be rotated again.
With reference to Fig. 3, two rollers 8 are conflicted with the inner side surface of brake block 21, and be symmetrically distributed in the both sides of brake block 21 central shafts, two rollers 8 on brake block 22 are identical with two roller 8 mounting points on brake block 21 with two roller 8 mounting points on brake block 23.
Roller on brake block can be set to three, three rollers conflict the respectively two ends of brake block inner side surface and the neutral position of brake block inner side surface; Roller on brake block can be set to four, evenly the conflict inner side surface of brake block of four rollers; Roller on brake block also can be set to five, the inner side surface of five irregular conflict brake blocks of roller.In Vehicle Driving Cycle process, each above-mentioned roller inserts corresponding the first groove, restraining groove and the second groove simultaneously.According to the length change of roller, the quantity of drive plate also can change thereupon.If roller is shorter, drive unit just arranges a drive plate, and drive plate can be arranged on the top of position-arresting disk, also can be arranged on the below of position-arresting disk.If roller is longer, three drive plates can be set on drive unit, wherein two drive plates are arranged on the top of position-arresting disk, and remaining next drive plate is arranged on the below of position-arresting disk.If a drive plate is set on drive unit, and drive plate is arranged on position-arresting disk when below, and spacing cover plate will be arranged on position-arresting disk top.
With reference to Fig. 2, the first ratchet 31 is connected with the first adjacent groove 311 arc transition, and the second ratchet 51 is connected with the second adjacent groove 511 arc transition.With reference to Fig. 2, on spacing cover plate 6, be provided with the first positioning hole coordinating with pin 7, on the second drive plate 5, be provided with the second fixed hole coordinating with pin 7, on position-arresting disk 4, be provided with the arcuate socket coordinating with pin 7, on the first drive plate 3, be provided with the 3rd positioning hole coordinating with pin 7.Position-arresting disk 4 can rotate in a circumferential direction by arcuate socket on pin 7, and arcuate socket defines the angle that position-arresting disk 4 rotates.
Certainly position-arresting disk, except offering arcuate socket, also can arrange a breach, and breach facilitates pin to pass position-arresting disk, avoids again and dowel contact, rotates in a circumferential direction thereby affect position-arresting disk.
With reference to Fig. 2 and Fig. 3, the bottom upper surface of housing 1 is provided with six the first guide pads 11, the first 11 two of guide pads are one group, the first guide pad 11 is parallel to each other on the same group, two adjacent the first guide pads 11 are not on the same group arranged to splayed shape, two adjacent the first guide pads 11 are on the same group mutually not close near one end of the second drive plate 3, away from one end of the second drive plate 3 mutually away from.First brake sheet 21, the second brake block 22 and the 3rd brake block 23 corresponding one group of first guide pad 11 respectively, taking first brake sheet 21 as example, on the bottom end of first brake sheet 21, be provided with two the second guide pads that are parallel to each other, the right flank of the first guide pad 11 that the left surface of one of them the second guide pad is corresponding with it is parallel to each other and fits together, and the left surface of the right flank of another the second guide pad and above-mentioned the first guide pad 11 another the first guide pad 11 is on the same group parallel to each other and fits together.The second guide pad layout on the second guide pad and first brake sheet 21 on the second guide pad on the second brake block 22 and the 3rd brake block 23 is in full accord.
With reference to Fig. 2, the second drive plate 3 is provided with the restraining groove 34 of circumferential setting, is provided with and dodges groove 33 on the cell wall of restraining groove 34, and the center line of restraining groove 34 is positioned on the same circular arc line of the second drive plate 3 with the center line of dodging groove 33.The bottom upper surface of housing 1 is provided with the position-limited lever 13 coordinating with restraining groove 34, and the top end of position-limited lever 13 is provided with boss 131, and the diameter of boss 131 is greater than the width of restraining groove 34.Boss 131 is through dodging groove 33, so that position-limited lever 13 inserts in restraining groove 34, and second drive plate 3 that rotates in a circumferential direction, position-limited lever 13 inserts in restraining groove 34, and now, the bottom end of boss 131 contacts the top end of the second drive plate 3.
With reference to Fig. 2, housing 1 bottom upper surface is provided with on positive stop lug boss 12, the second drive plates 3 and is provided with the through hole coordinating with positive stop lug boss 12, and the second drive plate 3 is enclosed within on positive stop lug boss 12, thereby avoids the second drive plate 3 to move radially in housing 1.
With reference to Fig. 2, one end of rocking arm 10 is provided with connecting rod 102, and connecting rod 102 runs through the diapire of housing 1, and gear 101 is arranged on the sidewall that connecting rod 102 is positioned at housing 1 one end.
On the first drive plate, offer one with the first through hole of the first drive plate concentric, be positioned on the sidewall of the first drive plate of the first through hole the first driven tooth is circumferentially set, on the second drive plate, offer one with the second through hole of the second drive plate concentric, be positioned on the sidewall of the second drive plate of the second through hole the second driven tooth be circumferentially set, on housing, arrange one with the first driven tooth and the second driven tooth meshed gears simultaneously.This structure also can drive the first drive plate and the rotation of the second drive plate.
The above, be only embodiment of the present utility model, but the utility model protection domain is not limited to this, and those of ordinary skill in the art should be understood that the utility model includes but not limited to accompanying drawing and the content of describing in embodiment above.Any amendment that does not depart from function and structure principle of the present utility model all will be included in the scope of claims.
Claims (10)
1. a drum is stopped, the drive unit that comprises housing, brake block assembly and drive described brake block assembly to move, it is characterized in that: described brake block assembly comprises at least two brake blocks, between the end of adjacent two brake blocks, connect by elastic element, described drive unit comprises position-arresting disk and at least one drive plate can relative limit dish being rotated, described position-arresting disk and described drive plate arranged stacked, described position-arresting disk edge is provided with restraining groove, in described restraining groove, be provided with roller, described drive plate rotarily drives the inner side surface of described roller pushing and pressing brake block.
2. a kind of drum according to claim 1 is stopped, and it is characterized in that: at least one described drive plate is arranged on described position-arresting disk below.
3. a kind of drum according to claim 1 is stopped, and it is characterized in that: at least one described drive plate is arranged on described position-arresting disk top.
4. stop according to the one drum described in claim 1 or 2 or 3, it is characterized in that: described drive plate is the ratchet with ratchet, and described ratchet is positioned at the position of the corresponding described brake block of ratchet, described drive plate promotes described roller by described ratchet.
5. a kind of drum according to claim 1 is stopped, and it is characterized in that: described drive unit also comprises the spacing cover plate that is positioned at described position-arresting disk top.
6. a kind of drum according to claim 5 is stopped, and it is characterized in that: described spacing cover plate, described drive plate and described position-arresting disk are connected by the pin axially arranging, and described position-arresting disk is provided with arcuate socket, and described pin is through described arcuate socket.
7. stop according to the one drum described in claim 1 or 2 or 3, it is characterized in that: described shell bottom wall is provided with position-limited lever, described position-limited lever top is provided with boss, described drive plate is provided with restraining groove and dodges groove, described position-limited lever is through described restraining groove, and the width of described boss is dodged between groove groove width and described restraining groove groove width between described.
8. stop according to the one drum described in claim 1 or 2 or 3, it is characterized in that: described shell bottom wall is provided with the first guide pad, described brake block bottom end is provided with the second guide pad, the side laminating of the side of described the first guide pad and described the second guide pad, guides the radial motion of described brake block.
9. stop according to the one drum described in claim 1 or 2 or 3, it is characterized in that: described drum is stopped and also comprised the rocking arm being rotationally connected with on described housing, and one end that described rocking arm stretches in described housing is connected with gear, and described gear is meshed with described drive plate.
10. stop according to the one drum described in claim 1 or 2 or 3, it is characterized in that: described housing bottom is provided with the positive stop lug boss raising up, described positive stop lug boss is through drive plate, and described positive stop lug boss and described drive plate concentric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420464191.2U CN203979210U (en) | 2014-08-15 | 2014-08-15 | A kind of drum is stopped |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420464191.2U CN203979210U (en) | 2014-08-15 | 2014-08-15 | A kind of drum is stopped |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203979210U true CN203979210U (en) | 2014-12-03 |
Family
ID=51976659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420464191.2U Withdrawn - After Issue CN203979210U (en) | 2014-08-15 | 2014-08-15 | A kind of drum is stopped |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203979210U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179851A (en) * | 2014-08-15 | 2014-12-03 | 长兴华亿机电有限公司 | Drum brake |
| CN110966325A (en) * | 2019-11-27 | 2020-04-07 | 无锡翼友机车科技有限公司 | Electric bicycle and electric motorcycle drum brake structure with surface contact brake |
-
2014
- 2014-08-15 CN CN201420464191.2U patent/CN203979210U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179851A (en) * | 2014-08-15 | 2014-12-03 | 长兴华亿机电有限公司 | Drum brake |
| CN104179851B (en) * | 2014-08-15 | 2016-09-07 | 长兴华亿机电有限公司 | A kind of drum is stopped |
| CN110966325A (en) * | 2019-11-27 | 2020-04-07 | 无锡翼友机车科技有限公司 | Electric bicycle and electric motorcycle drum brake structure with surface contact brake |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141203 Effective date of abandoning: 20160907 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |