• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Elastic unit part of centering (1) of moving rod (3) in a housing bushing (2), of those used in the brake booster and having an internal and external polygonal profile with at least three support vertices (4), being said support vertices (4) in contact with the inner surface (5) of the housing bushing (2) and the support vertices (4) being slightly rounded. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2746249A1
    申请号:ES201830868
    申请日:2018-09-05
    公开日:2020-03-05
    发明作者:De La Peña Fernandez De Troconiz Iñigo Fernández；De Lacalle Marquínez Carlos Lopez
    申请人:Rpk S Coop；
    IPC主号:
    专利说明:

    [0001]
    [0002] Moving rod centering elastic unit piece
    [0003]
    [0004] Field of the Invention
    [0005] This invention concerns an elastic unitary piece for centering a mobile stem in a housing bush, which is usually used in the automotive, railway, industrial or wind sector.
    [0006]
    [0007] State of the prior art
    [0008] At present and as a reference to the state of the art, it is usual and known to use polyurethane springs and springs or bushings to center the shaft in the housing of the booster of the impeller rod and where the brake pedal is attached. . Thus, this impeller rod is housed inside a bush and so that the impeller rod itself does not undergo deviation, helical springs are used in the cylindrical housing of the bush to center said impeller rod. However, these solutions do not perfectly align the stem, and in some cases limit the axial movement required for assembly. Consequently, the assembly is more complicated, requiring the help of the operator to position it correctly, and in operation, efficiency in transmission of motion is lost due to the friction of the entire surface of the impeller stem due to the vertical deviation produced by the lack of force applied by the use of said springs.
    [0009]
    [0010] Another of the solutions adopted is the use of sponges for the centering of the impeller rod, in this way the impeller rod is positioned horizontally for assembly and allows a better fixation, conserving the ability to flex, and prevents a malfunction in the transmission of pedal movement to the booster valve. However, this solution ceases to be effective the more the stem weighs, causing it to lower and tilt, and consequently, both the assembly and the transmission of movement are worse. In addition, with time and with friction, waste is generated from the disintegration of this type of matter, which deteriorates the mechanism and prevents its correct operation.
    [0011]
    [0012] Another solution used is a vibration control element located in the booster housing, in the anchorage of the dust cover to it, a return spring located between said anchorage of the dust cover and a retaining element in the form of a drive stem fixing disc. In this way, with said cylindrical vibration control element, the upward or downward vibration of the stem is avoided. In addition, this part is used on certain occasions for the alignment of the impeller rod during assembly.
    [0013] However, this solution requires a higher number of elements, which makes the device more expensive and does not ensure a correct horizontal position during assembly, since it requires that the said retainer and the annular mounting part have minimal clearances, making manufacturing difficult. and increasing production costs and causing less efficient operation.
    [0014]
    [0015] Explanation of the invention and advantages
    [0016] Faced with this state of affairs, the present invention refers to an elastic unitary piece for centering a rod that is axially movable in a housing bush, used in the brake booster and that can be applied to any sector where the need arises. centering of an axis with axial movement, such as in the automotive, railway, industrial or wind sector. It is made up of a continuous polygonal sheet profile both on its inner surface and on its outer surface with at least three support vertices, said support vertices being in contact with the interior surface of the housing bush and the support vertices being slightly rounded to facilitate the support with the inner cylindrical surface of the housing bushing, the configuration with more vertices can be given, such as a polygonal elastic unitary piece with six vertices (hexagon) or more, being the most logical manufacturing for costs and ease of three vertices.
    [0017] This configuration allows the movable stem to be centered with respect to the housing bushing thanks to the fact that the elastic centering unitary piece is fixed by the contact of its supporting vertices with the inner wall of the cylindrical housing of the housing bushing. This unitary elastic centering piece is formed by a single continuous sheet metal profile, which allows simple manufacturing and avoids resistance problems and undesired displacements of said polygonal profile. Thus, the stem during assembly is inserted into the housing sleeve and is fixed in a centered position, by contact only with the sides of the polygonal profile of the elastic unitary piece centered in the intermediate position of the mobile stem itself, in this way In this way, said mobile stem is prevented from tilting and making assembly difficult. With this configuration, the help of an operator is not necessary to place the mobile stem in the horizontal position and the assembly of the brake booster assembly is carried out more easily, reducing production times and costs.
    [0018] In addition, another advantage of this unitary elastic centering piece is that during the operation of the horizontal driving movement of the mobile stem, a vertical movement of between 3 and 4 degrees is allowed, allowing the necessary movement to the axis to be attached to the brake pedal. . With this configuration, the weight of the component is also reduced compared to the solution with a compression spring and noise is avoided during operation.
    [0019] Thus, it is a more economical solution, and it reduces the weight of the component and can be used not only in brake boosters but for any application that requires centering of a mobile stem.
    [0020]
    [0021] Another feature of the invention is that the elastic centering unitary piece is formed by a profile that overlaps at least half of one of its sides. Thus, a very wide versatility is achieved for different solutions, by overlapping half of one of its sides, one side or more layers or turns of the profile of the elastic centering piece depending on the needs, being able to support more stems heavy when the dimensions of the booster or the assembly are greater or when the material used for the elastic unitary piece has more or less rigidity or malleability. This allows the same solution to be valid for different mechanisms without increasing production costs and achieving the same efficiency.
    [0022]
    [0023] Another particularity of the invention is that, during the shaping of the elastic centering piece, its sides can be shaped with a precompression, generating a slight inward arch. Thanks to this configuration, the mobile stem would always be in contact with the interior sides of the profile of the elastic centering piece, achieving greater fixation for the horizontal positioning of the mobile stem without allowing play and also achieving a free vertical movement of between 3 and 4 degrees for those settings that are necessary.
    [0024]
    [0025] As a joining alternative, the unitary elastic centering piece can be formed by a continuous profile joined by welding. Thanks to this configuration, the unitary piece would form a single block when welding both ends of the sheet metal profile without the possibility of axial misalignment.
    [0026]
    [0027] Finally, in an alternative embodiment, it is provided that the unitary elastic centering piece additionally has an inner guide ring. Thus, the tasks of assembly of the mobile stem in the housing bushing since the ring allows to guide the start of the housing of the mobile stem.
    [0028]
    [0029] Drawings and references
    [0030] In order to better understand the nature of the invention, an accompanying arrangement is presented in the accompanying drawings which is merely illustrative and not limiting.
    [0031]
    [0032] Figure 1 shows an exploded view of the elastic unitary centering piece (1) of mobile stem (3) in a housing bush (2) with the three elements aligned before assembly with an arrow indicating the assembly direction by a machine.
    [0033]
    [0034] Figure 2 shows a profile view with a partial section of the assembly assembled with the brake pedal and with the elastic centering unit piece (1) in bold for better visualization.
    [0035]
    [0036] Figure 3 shows an elevation view of the elastic centering piece (1) with one of its sides overlapping.
    [0037]
    [0038] Figure 4 shows an elevation view of the centering elastic unitary piece (1) in its variant with an inner guide ring (7).
    [0039]
    [0040] Figure 5 shows a longitudinal sectional view of the assembled assembly, with the elastic centering piece (1) shown in bold.
    [0041]
    [0042] Figure 6 shows a cross-sectional view through the middle of the elastic centering piece (1).
    [0043]
    [0044] Figure 7 shows a longitudinal section view of the assembled assembly, without the elastic centering piece (1).
    [0045]
    [0046] The following references are indicated in these figures:
    [0047] 1. Unitary elastic centering piece
    [0048] 2. Housing bush
    [0049] 3. Moving stem
    [0050] 4. Support vertex
    [0051] 5. Inner surface of the housing bush (2)
    [0052] 6. Side of the centering elastic unit piece (1)
    [0053] 6b. Overlapping side of centering elastic unit piece (1)
    [0054] 7. Inner guide ring of the elastic centering piece (1)
    [0055] 8. Brake pedal
    [0056]
    [0057] Presentation of a preferred embodiment
    [0058] With reference to the drawings and references listed above, a preferred arrangement of the object of the invention is illustrated in the attached drawings, referring to an elastic unitary centering piece (1) of mobile stem (3) in a housing bush (2) , of employees in the brake booster and applicable in the automobile, railway, industrial or wind sector and which is made up of a polygonal profile inside and outside with at least three support vertices (4), said support vertices (4) being in contact with the inner surface (5) of the housing bush (2) and the supporting vertices (4) being slightly rounded.
    [0059]
    [0060] As can be seen in Figure 1, the centering elastic unitary piece (1), the mobile stem (3) and the housing bush (2) remain aligned before their assembly. The centering elastic unitary piece (1) is then placed inside the housing bush (2) and with the help of a machine the mobile stem (3) is mounted inside the housing bush (2) and the unitary piece centering elastic (1), or the elastic centering unitary piece (1) is placed on the mobile stem (3) and with the help of a machine or manually the mobile stem (3) is assembled together with the elastic part ( 1) inside the housing bushing (2), the movable stem (3) being able to have a recess for housing the elastic centering piece (1). In either of the two forms of assembly, the mobile stem (3) after its insertion is located horizontal and centered inside the housing bush (2) (figure 6). This is possible thanks to the fact that the elastic unitary centering piece (1) is fixed by the support of its supporting vertices (4) with the inner surface (5) of the housing sleeve (2), these being supporting vertices (4 ) slightly rounded to fit the cylindrical surface of the housing bush (2). And also, the mobile stem (3) is correctly centered by its contact only with the sides (6) of the interior of the polygonal profile of the elastic centering piece (1). In this way, correct assembly with the brake pedal (8) is allowed as the hole in the housing bush (2) is aligned, through which the mobile stem (3) must pass, with the mobile stem (3), avoiding problems in the transmission of movement during braking due to misalignment.
    [0061] Therefore, as can be seen in Figure 2, the elastic unitary centering piece (1) allows, due to its elasticity, a vertical movement of between 3 and 4 degrees that helps the assembly to have an axial movement that facilitates its assembly and avoids a rigid joint that may cause a malfunction or a break during the transmission of movement of the brake pedal (8) to the mobile stem (3).
    [0062]
    [0063] In figure 3 it can be seen how the profile of the elastic centering piece (1) overlaps at least half of one of its sides (6) generating an overlapping side (6b) of the elastic centering piece ( one). This allows that when the force necessary to support the mobile stem (3) increases, it is possible to increase the overlap with one or more turns, providing greater versatility.
    [0064]
    [0065] In addition, so that the horizontal and centered positioning of the mobile stem (3) is more effective, during the shaping of the unitary centering piece (1) a precompression is conferred on its sides so that they are slightly arched towards the inside. This configuration avoids play and provides better positioning of the mobile stem (3). Without this configuration, a vertical displacement would occur that would lead to the inclination of the mobile stem (3) as well as when no centering element is used as in the example in figure 7.
    [0066]
    [0067] In an alternative embodiment, the elastic unitary centering piece (1) is provided to be made with a continuous sheet metal profile without overlap and with welded ends. Thus, the unitary elastic centering piece (1) is more compact and its axial misalignment is avoided.
    [0068]
    [0069] Finally, it is foreseen that in an alternative embodiment the elastic unitary centering piece (1) has an inner guide ring (7) as can be seen in figure 4. Thanks to this configuration during the assembly of the mobile stem (3) with A machine ensures correct positioning.
    [0070]
    [0071] The essential nature of this invention is not altered by variations in materials, shape, size and arrangement of the component elements, described in a non-limiting manner, this being sufficient to proceed with its reproduction by an expert.
    权利要求:
    Claims (5)
    [1]
    1a.- Unitary elastic centering piece (1) with a mobile stem (3) in a housing bush (2), used by the brake booster, characterized in that it has a polygonal profile inside and outside with at least three support vertices (4 ), said support vertices (4) being in contact with the inner surface (5) of the housing bush (2) and the support vertices (4) being slightly rounded.
    [2]
    2a.- Unitary elastic centering piece (1) according to the preceding claim, characterized in that it is formed by a profile that overlaps at least half of one of its sides (6).
    [3]
    3 a.- Unitary elastic centering part (1) according to any of the previous claims, characterized in that the sides (6) of the elastic centering part (1) of the mobile stem (3) are initially pre-compressed.
    [4]
    4 a.- Centering elastic unitary piece (1) according to claim 1, characterized in that it is formed by a continuous profile joined by welding.
    [5]
    5 a.- Push rod centering elastic unitary piece (3) according to any of the previous claims, characterized in that it has an inner guide ring (7).
    类似技术:
    公开号 | 公开日 | 专利标题
    JP2006194426A|2006-07-27|Spring seat structure for hydraulic buffer
    KR20150008866A|2015-01-23|Hollow-type strain wave gearing unit
    ES2108525T3|1997-12-16|RESISTANT, RADIAL AND AXIAL BUSHING BEARING, FOR PARTS OF THE CHASSIS IN AUTOMOBILES.
    JP3770458B2|2006-04-26|Hydraulic shock absorber dust cover mounting structure
    TWI612228B|2018-01-21|Bearing mechanism and harmonic gear device
    US5530304A|1996-06-25|Miniature motor and fan using the same
    ES2314715T3|2009-03-16|PNEUMATIC SPRING WITH A ARTICULATION OF ROTULA.
    KR101646904B1|2016-08-09|Strain wave gearing
    ES2591009T3|2016-11-24|Electromechanical steering of motor vehicle
    ES2536457T3|2015-05-25|Rack steering
    JP4219374B2|2009-02-04|mechanical seal
    ES2335905T3|2010-04-06|SPHERICAL ARTICULATION.
    ES2644124T3|2017-11-27|Joint housing of a ball joint as well as procedure for mounting the joint housing on a support element
    JP2005155808A|2005-06-16|Suspension spring supporting structure for hydraulic shock absorber
    ES2746249A1|2020-03-05|Elastic unitary piece of mobile stem centering |
    ES2321106T3|2009-06-02|DEVICE FOR APPLYING PRESSURE TO A ZIPPER.
    JP2006170420A|2006-06-29|Outer ring for half-split bearing and half-split bearing provided therewith
    JP4587249B2|2010-11-24|Spring leg support
    KR20060094058A|2006-08-28|Piston-cylinder unit with a protective sleeve
    JPH10110726A|1998-04-28|Oil pressure damping elastic bearing
    JP2000213607A|2000-08-02|Belt tensioner, engine having it, and driving system
    ES2311748T3|2009-02-16|ARTICULATED BEARING.
    JP4203792B2|2009-01-07|Rack bush
    JP2005106293A|2005-04-21|Connection rod
    ES2448808T3|2014-03-17|Friction clutch equipped with a pre-absorber comprising hysteresis and dependent sliding friction systems
    同族专利:
    公开号 | 公开日
    ES2746249B2|2020-07-06|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3173266A|1963-04-29|1965-03-16|Bendix Corp|Push rod retainer|
    US3463054A|1964-11-18|1969-08-26|Girling Ltd|Fluid pressure operated boosters or servo motors|
    EP1306562A1|2001-10-26|2003-05-02|Automotive Products France S.A.|Hydraulic actuator with retainer|
    WO2018206299A1|2017-05-12|2018-11-15|Lucas Automotive Gmbh|Actuation device for a vehicle braking system|
    法律状态:
    2020-03-05| BA2A| Patent application published|Ref document number: 2746249 Country of ref document: ES Kind code of ref document: A1 Effective date: 20200305 |
    2020-07-06| FG2A| Definitive protection|Ref document number: 2746249 Country of ref document: ES Kind code of ref document: B2 Effective date: 20200706 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201830868A|ES2746249B2|2018-09-05|2018-09-05|Moving rod centering elastic unit piece|ES201830868A| ES2746249B2|2018-09-05|2018-09-05|Moving rod centering elastic unit piece|
    [返回顶部]