EP3622193A1 - Bremsvorrichtung, federelement und verfahren zur montage einer bremsvorrichtung - Google Patents
Bremsvorrichtung, federelement und verfahren zur montage einer bremsvorrichtungInfo
- Publication number
- EP3622193A1 EP3622193A1 EP18724160.9A EP18724160A EP3622193A1 EP 3622193 A1 EP3622193 A1 EP 3622193A1 EP 18724160 A EP18724160 A EP 18724160A EP 3622193 A1 EP3622193 A1 EP 3622193A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- brake
- brake shoe
- connection point
- spring element
- region
- 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- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 7
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
- F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
- F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
- F16D51/20—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/58—Mechanical mechanisms transmitting linear movement
- F16D2125/66—Wedges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/08—Bands, shoes or pads; Pivots or supporting members therefor for internally-engaging brakes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
- F16D65/22—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for pressing members apart, e.g. for drum brakes
Definitions
- the present invention relates to a brake device, a spring element and a method for assembling a brake device.
- Braking devices especially drum brakes are sufficient, z. B. from DE 10 2009 027 081 A, known.
- This drum brakes are regularly provided for commercial vehicles, in which the wheels are mounted on rigid axles via bearings, in particular tapered roller bearings, rotating. To decelerate the wheels, a rotational movement of a rotatably connected to the respective wheel brake drum is prevented.
- two brake pads are typically arranged within the brake drum, which are pivoted between a braking state in which brake pads on the brake shoes engage in an operative connection with an inner side of the drum brake, and a freewheeling state in which the operative connection is canceled.
- a braking device is provided for connection to an axle element, in particular for a commercial vehicle
- first brake shoe with a brake pad and a second brake shoe with a brake pad which are pivotably arranged in the brake drum or are arranged,
- a spring element which can be arranged or arranged between the first brake shoe and the second brake shoe for returning the first brake shoe and the second brake shoe from a braking state in which the brake lining is in operative connection with the brake drum, into a freewheeling state, in which the operative connection between the brake pad and the brake drum is lifted and
- the spring element is connectable to the first brake shoe at a first connection point and to the second brake shoe at a second connection point
- the braking device despite the space constrained by the At least partially between the first connection point and the second attachment point arranged actuator means a spring element, the restoring force is arranged directly between the first connection point and the second connection point.
- the bias voltage acts directly between the first connection point and the second connection point.
- the spring element is arranged in the assembled state without operative connection to the brake carrier.
- the spring element is in particular designed or biased such that the restoring force for returning the first brake shoe and the second brake shoe leads.
- the spring element is braced such that the restoring force is directed in the first connection point and the second connection point in each case on a plane of symmetry.
- the plane of symmetry runs in the assembled state of the brake device along a direction perpendicular to a wheel axis about which a wheel of the vehicle rotates, extending direction in each case centrally through the wheel axle and the actuator.
- the plane of symmetry additionally extends centrally through a bearing device, via which the first brake shoe and the second brake shoe are pivotally connected to the brake carrier.
- the spring element is designed such that the restoring forces in the first connection point and in the second connection point correspond to each other or differ from each other.
- the spring element is rod-shaped or sheet-shaped, in particular winding-free, designed.
- a spreading device for example with an S-cam, an expanding wedge or a Z-cam, is provided as the actuator device or actuator device.
- the actuator device or actuator device preferably also includes an adjusting device which, during operation of the brake device, compensates for the wear of the brake lining for a permanently constant braking effect.
- one is Part of the Aktuatoreinnchtung seen in a plane perpendicular to the plane of symmetry seen between the first connection point and the second connection point.
- the Aktuatoreinnchtung, the first connection point and the second connection point are arranged such that a straight direct connection, in particular along a direction perpendicular to the plane of symmetry, between the first connection point and the second connection point is not possible.
- the spring element according to the invention advantageously allows the actuator motor device and the spring elements to act on them in the same subregion of the first brake shoe or the second brake shoe and to cause the first brake shoe or the second brake shoe to pivot.
- the spring element is preferably designed such that it obstacles, z. B. in the form of Aktuatoreinnchtung or the axle element rotates.
- the axle element is preferably an axle tube through which the plane of symmetry preferably runs in the middle.
- the spring element has a U-shaped portion, wherein in particular the U-shaped portion in the mounted state, the axle, in particular the axle tube, at least partially surrounds.
- the U-shaped portion can be easily overcome the distance between the first brake shoe and the second brake shoe and structural obstacles such. B. the axle tube and / or a part of Aktuatoreinnchtung bypass.
- the U-shaped configured shape it is possible in an advantageous manner, the spring element without much effort, z. B. when changing the brake shoe to introduce storage facility side, without the Aktuatoreinnchtung must be solved.
- the actuator device is a Sp Schwarzkeilaktuator announced. In this way, a particularly cost-effective and reliable actuator device can be achieved. In other words, this can mean that the brake device can be an expanding wedge drum brake or is part of an expanding wedge drum brake.
- the spring element has a transverse region extending transversely over the axle element in the assembled state, wherein the transverse region is longer than a diameter of the axle element, in particular of the axle tube.
- the transverse region preferably runs along a direction extending at least substantially perpendicular to the plane of symmetry and thereby advantageously ensures that a distance between the first brake shoe and the second brake shoe, in particular spatially offset from the actuator device, is bridged.
- essentially perpendicular means that the relevant angle lies in a range of 75 ° to 105 °, preferably of 85 ° to 95 ° and particularly preferably of 88 ° to 92 °. It is particularly preferably provided that the transverse region is configured without winding or without winding.
- the spring element in the transverse area is designed to be sheet-shaped or rod-shaped for this purpose.
- a comparatively space-saving spring element can be provided with advantage.
- the ratio of the diameter of the transverse region to the length of the substantially vertical transverse region should be in a range of 0.2 to 0.5.
- the transverse region is rectilinear or curved. Under a straight transverse region is particularly to be understood as one which is substantially perpendicular to the plane of symmetry, while a curved transverse region, for example, to understand a transverse region having at least partially a radius of curvature, the z. B. 1, 2 to 1, 8 times as large as a radius associated with the axle tube. With such a small radius of curvature leaves to provide a spring element, the transverse region can be moved comparatively close to the axle tube to save space.
- a first leg region and / or a second leg region and / or a second leg element protrude from the transverse region, wherein the first leg region in the first connection point with the first brake shoe and / or the second leg region is connected in the second connection point with the second brake shoe.
- the first leg region and the second leg region delimit in a direction perpendicular to the plane of symmetry
- the transverse region, the first leg region and the second leg region are configured such that the spring element in the installed state is mirror-symmetrical with respect to the plane of symmetry.
- the first Schenkelbe- rich and the second leg portion are designed differently, for example, to cause different restoring forces on the first brake shoe and the second brake shoe.
- the first leg region and the second leg region are designed differently in order to simplify the assembly.
- the spring element is provided with the first leg area preassembled on the first brake shoe and during assembly only the second leg region has to be braced.
- a distance between the transverse region and the first connection point is smaller than the diameter of the shaft element.
- a spring element can advantageously be used, whose transverse region is guided past the axle tube on the actuator side.
- the distance between the transverse region and the first and the second Connection point measured along a direction parallel to the plane of symmetry extending direction.
- a ratio of the distance between the transverse region and the first attachment point to the length or extent of the first limb area or the second limb area dimensioned in the same direction is between 0.1 and 0.4 between 0.1 and 0.3 and more preferably between 0.1 and 0.2.
- a ratio between 0.1 and 0.2 a particularly advantageous compromise can be realized between a space-saving spring element and a lever-type restoring force emanating from the second or first leg region.
- an angle is formed between the first leg region and the transverse region, wherein the angle is a value between 75 ° and 105 °, preferably between 80 ° and 100 °, and particularly preferably between 85 ° and 95 °.
- the first pivot region is substantially perpendicular to the transverse region.
- an angle is formed between the second leg region and the transverse region, wherein the angle assumes a value between 75 ° and 105 °, preferably between 80 ° and 100 °, and particularly preferably between 85 ° and 95 ° ,
- a ratio of a length of the transverse region to a length of the first leg region has a value between 0.3 and 1.3, preferably between 0.4 and 1.1, and particularly preferably between 0.5 and 1.0 - takes. It has been found that in the ratio between 0.5 and 1.0, a spring element can be provided which is easy to handle during assembly and is not too space-filling. For example, proves a comparatively long first leg area because of a concomitant leverage during assembly-related biasing of the first connection point to the second connection point as advantageous. In particular, it is conceivable that the first leg region and the transverse region essentially correspond to each other.
- the ratio between the first Schenkelbereih and the transverse region is determined depending on the position of the first connection point and the axle tube.
- a ratio of a length of the transverse region to a length of the second leg region assumes a value between 0.3 and 1.3, preferably between 0.4 and 1.1, and particularly preferably between 0.5 and 1.0 ,
- the first leg region and the second leg region correspond to each other in terms of their length.
- a symmetrical spring element can advantageously be provided.
- the length of the first leg region differs from the length of the second leg region.
- such an embodiment may be advantageous if an obstacle between the first brake shoe and the second brake shoe makes it necessary.
- the braking device can advantageously be designed substantially independently of the shape of the spring element.
- the length of the first leg region or the length of the second leg region is dimensioned in a direction parallel to the plane of symmetry, while the length of the transverse region is dimensioned along a direction perpendicular to the plane of symmetry.
- a cross section of the spring element changes along the spring element between the first connection point and the second connection point.
- the restoring force can be comparatively easily set without space-filling measures in the design of the spring element, such. B. turns, are required.
- the spring element can be realized as compact as possible.
- the cross section in the transverse area changes in a plane lying parallel to the plane of symmetry and in the first leg area and / or the second leg area in a plane running perpendicular to the plane of symmetry.
- a mechanical interface for example in the form of an eyelet and hook system, is provided in the first connection point and / or in the second connection point. This advantageously prevents the first or second leg area from accidentally coming loose again from the first or second connection point during assembly, as a result of which the risk of injury during assembly can be reduced.
- the first interface region or the second interface region each have a hook on their ends facing away from the transverse region, while a corresponding eyelet is arranged on the inside of the first brake shoe or on the inside of the second brake shoe.
- first brake shoe and / or the second brake shoe in each case via a bearing device, in particular a ball-jaw bearing, to a
- first brake shoe and the second brake shoe can advantageously be mounted or stored pivotably on the brake carrier.
- the bearing device is preferably opposite the actuator device.
- first brake shoe and the second brake shoe can be fixed or fixed to the bearing device by means of a retaining element, in particular a retaining clip.
- a spring element is likewise provided for a braking device, comprising:
- a method for mounting a brake device comprising the steps:
- FIG. 1 shows a brake device according to a first preferred embodiment of the present invention.
- FIG. 2 shows a brake device according to a second preferred embodiment of the present invention
- FIG. 1 shows a brake device 1, in particular a drum brake, according to a first preferred embodiment of the present invention.
- a brake device 1 is particularly intended for commercial vehicles and serves to brake a wheel of the utility vehicle.
- the brake device 1 is preferably not for rigid axles, independent suspension driven axles, driven axles, steered or steerable axles or comparable axles, for example on a trailer, bus or truck.
- the rotation of the wheel is in this case caused by a arranged at the end of the rigid axle bearing, in particular a tapered roller bearing.
- the relative to the rigid axle rotating part of the bearing is also a hub with a
- a first brake shoe 1 1 with brake pads 4 and a second brake shoe 12 are arranged with brake pads 4 within the brake drum.
- the brake linings 4 are each arranged on one side of the first brake shoe 11 and the second brake shoe 12 facing the brake drum.
- the brake linings 4 come into operative connection with an inner side of the brake drum.
- the brake linings 4 come into contact with the inner side of the brake drum during the braking state in such a way that the brake linings 4 bearing against the inside of the brake drum interact in a force-fitting manner with the inside of the brake drum.
- the brake pad 4 forms a frictional resistance, which causes the braking of the brake drum and thus of the wheel.
- the operative connection between the brake drum and the brake pad 4 in a freewheeling state is canceled again.
- the first brake shoe 1 1 and the second brake shoe 12 are pivotally mounted on a brake carrier 7.
- the first brake shoe 1 1 and the second brake shoe 12 are each connected at one end to the brake carrier 7 via a bearing device 40, for example a ball-jaw bearing, by means of a holding element 41, for example a common retaining clip, pivotally connected to the brake carrier 7.
- an actuator 3 in particular a spreader, is provided between those of the bearing device 40 remote from the other ends of the first brake shoe 1 1 and the second brake shoe 12 .
- the function of the actuator device 3 is a distance between the bearing device 40 to increase opposite ends of the first brake shoe 1 1 and the second brake shoe 12 and so to pivot or transfer the first brake shoe 1 1 and the second brake shoe 12 in the braking state.
- Part of the actuator device 3 is preferably also an adjusting device, which ensures that when the brake linings 4 wear out, the first brake shoe 11 and the second brake shoe 12 move upwards to ensure a constant braking effect over the operating period.
- a spring element 2 is preferably provided for returning the first brake shoe 1 1 and the second brake shoe 12 from the braking state to the freewheeling state.
- the spring element 2 is connected at one end in a first connection point 21 to the first brake shoe 1 1 and at another end in a second connection point 22 to the second brake shoe 12.
- the spring element 2 is in particular arranged without connection to the brake carrier 7, so that a restoring force originating from the spring element 2 acts directly between the first connection point 11 and the second connection point 12.
- the spring element 2 is not supported on the brake carrier 7.
- the restoring force is designed such that it provides for a return of the first brake shoe 1 1 and the second brake shoe 12 from the braking state in the freewheeling state.
- the spring element 2 is designed as a winding-free or unwound leg spring, which comprises, for example, a U-shaped portion.
- the actuator device 3 which is arranged in a direction perpendicular to the plane of symmetry S between the first connection point 21 and the second connection point 22 and prevents a straight-line connection between the first connection point 21 and the second connection point 22, bypass.
- the plane of symmetry S extends in particular centrally through the actuator device 3 and an axle element, in particular an axle tube 5.
- the spring element 2 has a rod-shaped or leaf-shaped transverse region 30 extending over the axle element, in particular the axle tube 5, in the mounted state. from which a first leg portion 31 and a second leg portion 32 protrude.
- the rod-shaped transverse region 30 in a mounted state in a direction perpendicular to the plane of symmetry is greater than a diameter D of the axle tube 5, in particular an outer diameter of the axle 5.
- the transverse region 30 is limited by the respective transition to first leg region 31 and second leg region 32, which protrude with the formation of an angle ⁇ relative to the course of the transverse region 30.
- the angle ⁇ is between 75 ° and 105 °, preferably between 80 ° and 100 °, and particularly preferably between 85 ° and 95 °.
- a length of the first leg region 31 and of the second leg region 32 define a distance A4 dimensioned parallel to the plane of symmetry between the transverse region 30 and the first attachment point 21 or the second attachment point 32.
- the distance A4 between the transverse region 30 and the first connection point 21 substantially corresponds to the length of the first leg region 31 and the second leg region 32.
- the transverse region 30 thereby extends in the mounted state on the axle tube 5, ie between the bearing device 40 and axle tube 5, over.
- Length A3 of the first leg region 31 assumes a value between 0.3 and 1.3, preferably between 0.4 and 1.1, and particularly preferably between 0.5 and 1.0. In the present example, this ratio is preferably substantially 1. Furthermore, it is provided that the mounted spring element 2 is designed mirror-symmetrically to the plane of symmetry S, which runs, for example, centrally through the bearing device 40 and the actuator device 3. In order to reduce an effort or a risk of injury when mounting the spring element 2 to be mounted under tension, it is preferably provided that in the first connection point 21 and / or in the second connection point 22, a mechanical interface, for example in the form of an eyelet and Hook system, is provided.
- the hook 24 designed spring element side, wherein the hooks 2 are directed in the assembled state, for example, on the actuator 3.
- the spring element 2 in each case in the first brake shoe 1 1 and the second brake shoe 12 is mounted and this preassembled component subgroup in the region of the actuator 3 and the bearing device 40 is positioned.
- the holding element 41 for example by means of a screwdriver, mounted, and ensures that the first and second brake shoes 1 1 and 12 are finally positioned and biased.
- the embodiment illustrated here differs from that of FIG. 1 essentially only in that the transverse region 30 in the assembled state passes on the axle tube 5 on the actuator side.
- the spring element 2 is configured such that the distance A4 between the transverse region 30 and the first connection point 21 or the second connection point 22 is smaller than a diameter D of the axle tube 5.
- the length of the second leg region 22 and of the first leg region 21 is determined by their total extension of a direction parallel to the plane of symmetry.
- the length A3 of the first leg region 21 or the length A2 of the second leg region 22 is configured in such a way that the first leg region 21 or the second leg region 22 is larger in a direction parallel to the plane of symmetry S than in FIG the same direction measured distance between a center of the axle tube 5 and the first connection point 21 and / or the second connection point 22nd Reference numerals:
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017109927.1A DE102017109927B4 (de) | 2017-05-09 | 2017-05-09 | Bremsvorrichtung und Federelement |
| PCT/EP2018/061176 WO2018206363A1 (de) | 2017-05-09 | 2018-05-02 | Bremsvorrichtung, federelement und verfahren zur montage einer bremsvorrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3622193A1 true EP3622193A1 (de) | 2020-03-18 |
Family
ID=62152524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18724160.9A Withdrawn EP3622193A1 (de) | 2017-05-09 | 2018-05-02 | Bremsvorrichtung, federelement und verfahren zur montage einer bremsvorrichtung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3622193A1 (de) |
| DE (1) | DE102017109927B4 (de) |
| WO (1) | WO2018206363A1 (de) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE562359C (de) | 1931-05-24 | 1932-10-24 | Poul Arne Scott Iversen | Bremsbackenanordnung fuer Trommelbremsen |
| US2385540A (en) * | 1944-11-10 | 1945-09-25 | Gen Motors Corp | Brake |
| US3095950A (en) | 1960-06-17 | 1963-07-02 | Rockwell Standard Co | Flat, tapered horseshoe type return spring and brake shoe assembly |
| GB1078712A (en) | 1964-07-07 | 1967-08-09 | Girling Ltd | Improvements in internal shoe drum brakes |
| GB1199191A (en) | 1967-03-21 | 1970-07-15 | Girling Ltd | Improvements in or relating to Vehicle Brakes |
| DE2619587A1 (de) * | 1976-05-04 | 1977-11-17 | Volkswagenwerk Ag | U-foermig gebogene stabfeder |
| US6098766A (en) | 1998-02-02 | 2000-08-08 | Peterson American Corporation | Retraction spring for drum brake shoes |
| JP4732188B2 (ja) | 2006-02-27 | 2011-07-27 | 曙ブレーキ工業株式会社 | ドラムブレーキにおけるシューホールド機構 |
| DE102009027081B4 (de) | 2009-06-22 | 2012-03-29 | Saf-Holland Gmbh | Nutzfahrzeugtrommelbremse |
-
2017
- 2017-05-09 DE DE102017109927.1A patent/DE102017109927B4/de active Active
-
2018
- 2018-05-02 WO PCT/EP2018/061176 patent/WO2018206363A1/de not_active Ceased
- 2018-05-02 EP EP18724160.9A patent/EP3622193A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE102017109927A1 (de) | 2018-11-15 |
| DE102017109927B4 (de) | 2019-01-03 |
| WO2018206363A1 (de) | 2018-11-15 |
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