BR102017008836B1

BR102017008836B1 - COMBINATION, DRIVE ASSEMBLY, AND METHOD FOR PREVENTING A THREADED FASTENER FROM A BODY

Info

Publication number: BR102017008836B1
Application number: BR102017008836-7A
Authority: BR
Inventors: Darren Ziskovsky; Austin B. Stephens; Jeffrey S. Turner
Original assignee: Deere & Company
Priority date: 2016-06-13
Filing date: 2017-04-27
Publication date: 2023-05-30

Abstract

COMBINAÇÃO, CONJUNTO DE TRANSMISSÃO, TRANSMISSÃO, E, MÉTODO PARA IMPEDIR QUE UM PRENDEDOR ROSQUEADO SE DESPRENDA DE UM CORPO Um retentor rosqueado na forma de um parafuso de cabeça cilíndrica de flange é usado sozinho ou em combinação com uma arruela de grande diâmetro para engatar axialmente, por atrito, uma cabeça de, ou bloquear, um prendedor rosqueado de modo a impedir que o prendedor retroceda e afrouxe. Qualquer tendência do prendedor rosqueado para rodar em uma direção de afrouxamento é detida pelo retentor rosqueado, em uma primeira modalidade, em que o engate por atrito entre a cabeça de flange e/ou a arruela de grande diâmetro faz com que o retentor rosqueado tenda a apertar, e em uma segunda modalidade em que a cabeça de flange e/ou a arruela de grande diâmetro cooperam com um arranjo de recesso no prendedor para bloquear o afrouxamento do prendedor.COMBINATION, DRIVE ASSEMBLY, TRANSMISSION, AND METHOD OF PREVENTING A THREADED FASTENER FROM RELEASING FROM A BODY A threaded retainer in the form of a flange head screw is used alone or in combination with a large diameter washer to axially frictionally engage a head of, or lock, a threaded fastener to prevent the fastener from backing out and afro ux. Any tendency of the threaded fastener to rotate in a loosening direction is arrested by the threaded retainer, in a first embodiment, where frictional engagement between the flange head and/or large diameter washer causes the threaded retainer to tend to tighten, and in a second embodiment where the flange head and/or large diameter washer cooperate with a recessed arrangement in the fastener to block loosening of the fastener.

Description

TECHNICAL FIELD

[001] A presente invenção reside na técnica de dispositivos para impedir que os prendedores liberáveis rosqueados de afrouxarem acidentalmente ou serem desconectados da estrutura que é segurada no lugar pelos prendedores, e mais especificamente se refere à retenção de tais prendedores rosqueados.[001] The present invention resides in the art of devices to prevent threaded release fasteners from accidentally loosening or being disconnected from the structure that is held in place by the fasteners, and more specifically relates to the retention of such threaded fasteners.

FUNDAMENTALS

[002] Sistemas de prendedor são conhecidos por incluir prendedores rosqueados, que são impedidos de afrouxarem por prendedores que bloqueiam o prendedor rosqueado de afrouxar. Estes retentores assumem muitas formas, tais como anéis elásticos, peças de cunha e semelhantes, mas falta simplicidade e/ou confiabilidade.[002] Fastener systems are known to include threaded fasteners, which are prevented from loosening by fasteners that block the threaded fastener from loosening. These retainers take many forms, such as snap rings, wedge pieces and the like, but lack simplicity and/or reliability.

SUMMARY

[003] Vários aspectos de exemplos da descrição são estabelecidos nas reivindicações.[003] Various exemplary aspects of the description are set forth in the claims.

[004] Um primeiro aspecto inclui uma combinação de um primeiro componente, um segundo componente montado no primeiro componente para se deslocar axialmente ao longo de um primeiro eixo geométrico em relação ao primeiro componente e que ocupa uma posição axial desejada em relação ao primeiro componente, um arranjo de prendedores rosqueados é axialmente rosqueado no dito primeiro componente e engata axialmente o segundo componente para impedir o movimento do segundo componente a partir da dita posição axial desejada e um arranjo de retentores estando em engate axial com o arranjo de prendedores rosqueados e impedindo o movimento axial do arranjo de prendedores rosqueados para longe do dito segundo componente, e em que o arranjo de retentores inclui pelo menos um conjunto de retentores rosqueados que está em engate por atrito com o dito arranjo de prendedores rosqueados e atua em uma direção para deter o afrouxamento do dito arranjo de prendedores rosqueados.[004] A first aspect includes a combination of a first component, a second component mounted on the first component to move axially along a first axis relative to the first component and occupying a desired axial position relative to the first component, an arrangement of threaded fasteners axially threaded onto said first component and axially engage the second component to prevent movement of the second component from said desired axial position, and an arrangement of retainers being in axial engagement with the threaded fastener arrangement and preventing axial movement the threaded fastener arrangement away from said second member, and wherein the retainer arrangement includes at least one set of threaded fasteners that is in frictional engagement with said threaded fastener arrangement and acts in a direction to arrest loosening of said threaded fastener arrangement.

[005] Um segundo aspecto inclui o pelo menos um retentor rosqueado, que inclui um elemento de aplicação por atrito anular associado ao mesmo e que engata de forma apertada o arranjo de prendedores rosqueados para deter o movimento axial do conjunto de prendedores rosqueados para longe do primeiro componente; e o elemento de aplicação por atrito anular do pelo menos um retentor rosqueado que atua, em resposta ao arranjo de prendedores rosqueados que roda na direção para afrouxamento, para transferir uma força de atrito do arranjo de prendedores rosqueados para o pelo menos um retentor rosqueado que tende a fazer com que o dito pelo menos um retentor rosqueado seja rodado em uma direção de aperto, detendo, deste modo, qualquer tendência para o arranjo de prendedores rosqueados afrouxar.[005] A second aspect includes the at least one threaded retainer, which includes an annular friction fit member associated therewith and which tightly engages the threaded fastener arrangement to arrest axial movement of the threaded fastener assembly away from the first component; and the annular frictional engaging member of the at least one threaded fastener which acts, in response to the threaded fastener arrangement rotating in the direction for loosening, to transfer a frictional force from the threaded fastener arrangement to the at least one threaded fastener tending to cause said at least one threaded fastener to be rotated in a tightening direction, thereby arresting any tendency for the threaded fastener arrangement to loosen.

[006] Um terceiro aspecto inclui o arranjo de prendedores rosqueados, que inclui um flange anular que se estende radialmente; e o elemento de atrito anular que se sobrepõe ao flange anular.[006] A third aspect includes the threaded fastener arrangement, which includes a radially extending annular flange; and the annular friction element that overlaps the annular flange.

[007] Um quarto aspecto inclui o flange anular, que inclui pelo menos um recesso arqueado formado em um perímetro do flange; e o dito elemento de atrito anular tendo um perímetro conformado em complementaridade a e recebido no pelo menos um recesso.[007] A fourth aspect includes the annular flange, which includes at least one arcuate recess formed in a perimeter of the flange; and said annular friction element having a perimeter shaped in complementarity to and received in the at least one recess.

[008] Um quinto aspecto inclui o pelo menos um conjunto de retentores rosqueados, que inclui um parafuso de cabeça cilíndrica flangeada com uma peça de flange da cabeça engatando em uma arruela que forma o elemento de aplicação por atrito.[008] A fifth aspect includes the at least one set of threaded retainers, which includes a flanged cylindrical head screw with a head flange piece engaging a washer that forms the friction application element.

[009] Um sexto aspecto inclui o arranjo de retentores rosqueados, que inclui pelo menos um segundo conjunto de retentores rosqueados idêntico ao dito pelo menos um conjunto de retentores rosqueados, com o pelo menos segundo conjunto de retentores rosqueados estando localizado em um lado oposto do dito arranjo de prendedores rosqueados a partir do dito pelo menos um conjunto de retentores rosqueados.[009] A sixth aspect includes the threaded retainer arrangement, which includes at least a second set of threaded retainers identical to said at least one set of threaded retainers, with the at least second set of threaded retainers being located on an opposite side of said threaded fastener arrangement from said at least one set of threaded retainers.

[0010] Um sétimo aspecto inclui o pelo menos um e pelo menos segundo conjuntos de retentores rosqueados, cada um incluindo um elemento de aplicação por atrito anular associado ao mesmo e que engata de forma apertada o flange do dito conjunto de retentores rosqueados para deter o movimento axial do flange para longe do dito segundo componente; e o elemento de aplicação por atrito anular de cada um dos pelo menos um e pelo menos segundo retentores rosqueados que atua em resposta ao prendedor rosqueado que tende a afrouxar para transferir forças de atrito, que tendem a fazer com que o dito pelo menos um retentor rosqueado e o dito pelo menos segundo retentor rosqueado sejam apertados, detendo, deste modo, o afrouxamento do dito prendedor rosqueado.[0010] A seventh aspect includes the at least one and at least second sets of threaded retainers, each including an annular friction fit member associated therewith and which tightly engages the flange of said set of threaded retainers to arrest axial movement of the flange away from said second member; and the annular frictional engagement member of each of the at least one and at least second threaded retainers acting in response to the loosening threaded fastener to transfer frictional forces tending to cause said at least one threaded retainer and said at least second threaded retainer to tighten, thereby arresting loosening of said threaded fastener.

[0011] Um oitavo aspecto inclui o flange do prendedor rosqueado, que está na forma de um flange anular tendo uma superfície planar anular exposta, virada axialmente; e o elemento de atrito anular de cada um dos pelo menos um retentor rosqueado e pelo menos segundo retentor rosqueado que se sobrepõe ao disco circular e engata a superfície plana anular.[0011] An eighth aspect includes the flange of the threaded fastener, which is in the form of an annular flange having an exposed, axially facing, annular planar surface; and the annular friction element of each of the at least one threaded retainer and the at least second threaded retainer which overlies the circular disc and engages the annular flat surface.

[0012] Um nono aspecto inclui o flange anular, que tem um primeiro e um segundo recessos arqueados formados em um perímetro dos mesmos; e o elemento de atrito anular de cada um dos pelo menos um retentor rosqueado e pelo menos segundo retentor rosqueado tendo um perímetro circular conformado em complementaridade a e recebido, respectivamente, nos ditos primeiro e segundo recessos arqueados.[0012] A ninth aspect includes the annular flange, having first and second arcuate recesses formed in a perimeter thereof; and the annular friction element of each of the at least one threaded retainer and the at least second threaded retainer having a circular perimeter shaped in complementarity to and received, respectively, in said first and second arcuate recesses.

[0013] Um décimo aspecto inclui cada um dos pelo menos um conjunto de retentores rosqueados e pelo menos segundo conjunto de retentores rosqueados sendo um parafuso de cabeça cilíndrica flangeada com uma peça de flange da cabeça, que engata uma arruela formando o elemento de aplicação por atrito.[0013] A tenth aspect includes each of the at least one set of threaded retainers and the at least second set of threaded retainers being a cylindrical head screw flanged with a head flange piece, which engages a washer forming the frictional application member.

[0014] De acordo com um décimo primeiro aspecto, um método para impedir que um prendedor rosqueado seja desprendido de um corpo no qual está rosqueado para segurar um elemento no lugar, inclui as etapas de: (a) prover um retentor rosqueado sendo rosqueado em uma direção oposta à uma direção na qual o prendedor rosqueado está rosqueado; e (b) engatar por atrito o prendedor rosqueado com pelo menos um retentor rosqueado para deter a rotação do prendedor rosqueado em uma primeira direção, que tende a afrouxar o prendedor rosqueado, de tal modo que a rotação do prendedor rosqueado na primeira direção tenderá a fazer com que o retentor rosqueado gire em uma segunda direção, oposta à primeira direção, que tende a apertar o retentor rosqueado e a aumenta a força de atrito, detendo o afrouxamento do prendedor rosqueado.[0014] According to an eleventh aspect, a method of preventing a threaded fastener from being disengaged from a body into which it is threaded to hold an element in place, includes the steps of: (a) providing a threaded retainer being threaded in a direction opposite to a direction in which the threaded fastener is threaded; and (b) frictionally engaging the threaded fastener with at least one threaded retainer to arrest rotation of the threaded fastener in a first direction, which tends to loosen the threaded fastener, such that rotation of the threaded fastener in the first direction will tend to cause the threaded retainer to rotate in a second direction, opposite to the first direction, which tends to tighten the threaded retainer and increase the frictional force, arresting loosening the threaded fastener.

[0015] Estes e outros aspectos se tornarão evidentes a partir da leitura da descrição subsequente, junto com os desenhos anexos.[0015] These and other aspects will become evident from reading the subsequent description, together with the attached drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

[0016] A descrição detalhada dos desenhos refere-se às figuras anexas, nas quais: a figura 1 é uma vista em perspectiva de uma transmissão de acionamento de roda incorporada à presente invenção; a figura 2 é uma vista vertical parcial tomada através de um eixo geométrico de acionamento central da transmissão de acionamento de roda da figura 1; a figura 3 é uma vista em perspectiva como a figura 1, mas que mostra a transmissão dividida em uma localização espaçada para fora de um flange de montagem de aro de roda anular e revelando a presente invenção; a figura 4 é uma vista explodida parcial da transmissão de acionamento de roda da figura 3 mostrando os componentes que incluem a presente invenção; e a figura 5 é uma vista como a figura 3, mas que mostra uma segunda modalidade da invenção, em que o flange circular do retentor rosqueado é provido com um par de recessos circulares diametralmente opostos conformados em complementaridade a, e recebendo respectivamente a periferia das arruelas transportadas pelo par de parafusos de cabeça flangeada.[0016] The detailed description of the drawings refers to the attached figures, in which: figure 1 is a perspective view of a wheel drive transmission incorporated into the present invention; Figure 2 is a partial vertical view taken through a central drive axis of the wheel drive transmission of Figure 1; Figure 3 is a perspective view like Figure 1, but showing the transmission split at a location spaced away from an annular wheel rim mounting flange and revealing the present invention; Figure 4 is a partial exploded view of the wheel drive transmission of Figure 3 showing components comprising the present invention; and figure 5 is a view like figure 3, but showing a second embodiment of the invention, in which the circular flange of the threaded retainer is provided with a pair of diametrically opposed circular recesses shaped in complementarity to and respectively receiving the periphery of the washers carried by the pair of flanged head screws.

DETAILED DESCRIPTION OF THE DRAWINGS

[0017] Pelo menos uma modalidade exemplar da matéria objeto desta descrição é entendida ao serem feitas referência às figuras 1 a 4 dos desenhos.[0017] At least one exemplary embodiment of the subject matter of this description is understood when referring to figures 1 to 4 of the drawings.

[0018] A figura 1 mostra uma transmissão de acionamento de roda 10 que inclui um alojamento 12, que inclui uma seção fixa 14 e uma seção rotativa 16. Uma extremidade externa da seção fixa 14 é definida por um flange de montagem recortado 18 provido para suportar a transmissão 10 de uma estrutura de veículo (não mostrado). Uma extremidade interna da seção de alojamento de transmissão rotativa 16 é definida por um flange de montagem de roda circular 20, que é acoplado a uma extremidade interna de uma peça cilíndrica 22 da seção rotativa 16, que é adaptada para receber uma roda (não mostrada), com um aro da roda sendo cavilhado ao flange 20.[0018] Figure 1 shows a wheel drive transmission 10 including a housing 12, which includes a fixed section 14 and a rotating section 16. An outer end of the fixed section 14 is defined by a cut-out mounting flange 18 provided to support the transmission 10 from a vehicle frame (not shown). An inner end of the rotary transmission housing section 16 is defined by an annular wheel mounting flange 20, which is coupled to an inner end of a cylindrical part 22 of the rotary section 16, which is adapted to receive a wheel (not shown), with a wheel rim being pegged to the flange 20.

[0019] Referindo-se agora também à figura 2, pode ser visto que a seção de alojamento fixa 14 contém um dispositivo energizado, uma peça que é mostrada aqui como sendo um motor hidrostático 24, incluindo um eixo cardã central 26 que se estende axialmente na seção de alojamento rotativa 16 ao longo de um eixo geométrico de rotação X—X. Uma extremidade externa do eixo cardã 26 tem uma conexão estriada com uma extremidade interna de um eixo de entrada planetário 28, o eixo de entrada 28 tendo uma extremidade externa definida por uma engrenagem solar planetária 30.[0019] Referring now also to Figure 2, it can be seen that the fixed housing section 14 contains an energized device, a part which is shown here to be a hydrostatic motor 24, including a central cardan shaft 26 that extends axially in the rotatable housing section 16 along an axis of rotation X—X. An outer end of cardan shaft 26 has a splined connection with an inner end of a planetary input shaft 28, the input shaft 28 having an outer end defined by a planetary sun gear 30.

[0020] O flange de montagem recortado 18 forma uma peça integral de uma parede interior 32 que se estende radialmente do alojamento 14, que suporta de forma rotativa o eixo cardã de motor 26. A parede 32 inclui uma peça de suporte cilíndrica ou fuso 34 que se estende axialmente. Um transportador planetário 36 inclui uma peça de montagem cilíndrica ou fuso 38 recebido na peça de suporte cilíndrica 34 da parede 32 e tem uma região de extremidade externa provida com estrias internas 40, engatadas com estrias externas 42 providas na região de extremidade externa da peça de suporte 34 da parede 32.[0020] The cut-out mounting flange 18 forms an integral part of a radially extending inner wall 32 of the housing 14, which rotatably supports the motor driveshaft 26. The wall 32 includes an axially extending cylindrical support piece or spindle 34. A planetary conveyor 36 includes a cylindrical mounting piece or spindle 38 received in the cylindrical support piece 34 of the wall 32 and has an outer end region provided with inner ribs 40 engaged with outer ribs 42 provided in the outer end region of the support piece 34 of the wall 32.

[0021] Referindo-se agora também às figuras 3 e 4, pode ser visto que o transportador planetário 36 inclui um flange geralmente circular 44 que se estende radialmente para fora da extremidade externa da peça de montagem cilíndrica 38, com quatro fusos de montagem de engrenagem planetária 46 (ver figura 2) sendo espaçados em ângulos iguais em torno do eixo geométrico de rotação X — X e que se projetam axialmente para fora do flange 44. Uma engrenagem planetária 48 é montada para rotação em cada um dos fusos 46.[0021] Referring now also to Figures 3 and 4, it can be seen that the planetary conveyor 36 includes a generally circular flange 44 extending radially outward from the outer end of the cylindrical mounting piece 38, with four planetary gear mounting spindles 46 (see Figure 2) being spaced at equal angles about the axis of rotation X — X and projecting axially outward from the flange 44. A planetary gear 48 is mounted for rotation on each of the 46 spindles.

[0022] A peça de montagem cilíndrica 38 do transportador planetário 36 serve como um suporte para pistas internas 50 de um conjunto de mancal de rolos afunilados de fila dupla 52, com pistas externas 54 do conjunto de mancal sendo fixadas em um arranjo de furo anular 56 provido em uma parede 58 integralmente unida a, e que se estende axialmente para dentro do flange de montagem de roda 20. O flange 44 do transportador planetário 36 tem uma superfície virada axialmente para dentro 60, engatada com uma superfície virada axialmente para fora 62 da pista interna axialmente externa 50 do conjunto de mancal 52. Um recesso anular 64 está localizado imediatamente axialmente para fora das estrias internas 40 do transportador 36.[0022] The cylindrical mounting part 38 of the planetary conveyor 36 serves as a support for inner races 50 of a double row tapered roller bearing assembly 52, with outer races 54 of the bearing assembly being fixed in an annular bore arrangement 56 provided in a wall 58 integrally joined to, and extending axially into, the wheel mounting flange 20. The flange 44 of the planetary conveyor 36 has a axially inwardly facing surface 60 engaged with an axially outwardly facing surface 62 of the axially outwardly facing inner race 50 of the bearing assembly 52. An annular recess 64 is located immediately axially outward from the inner splines 40 of the conveyor 36.

[0023] Um prendedor cilíndrico 66 tem uma seção de extremidade interna rosqueada exteriormente 68 rosqueada em uma região de extremidade externa rosqueada interiormente 70 da peça de suporte cilíndrica 34 da parede 32 em um lado radialmente oposto da peça de suporte 34 das estrias externas 42. Uma extremidade axialmente externa do prendedor 64 inclui um flange anular 72 que se estende radialmente, tendo uma superfície 74 disposta axialmente para dentro e tendo uma região de extremidade radialmente externa recebida no recesso anular 64 de modo que a superfície 42 apoie axialmente o transportador planetário 36, com o aperto do prendedor 66, resultando na superfície 60 do transportador pressionando contra a superfície de pista interna 62, virada axialmente para fora, do conjunto de mancal 52 de modo a exercer forças de aperto adequadas no conjunto de mancal 52.[0023] A cylindrical fastener 66 has an externally threaded inner end section 68 threaded into an internally threaded outer end region 70 of the cylindrical support piece 34 of the wall 32 on a radially opposite side of the support piece 34 of the outer splines 42. An axially outer end of the fastener 64 includes a radially extending annular flange 72 having an axially disposed surface 74 inwardly and having a radially outward end region received in annular recess 64 so that surface 42 axially supports planetary conveyor 36, upon clamping of fastener 66, resulting in conveyor surface 60 pressing against inner raceway surface 62, facing axially outward, of bearing assembly 52 so as to exert adequate clamping forces on bearing assembly 52.

[0024] Juntamente com o prendedor cilíndrico 66, a presente invenção inclui um arranjo de retenção compreendendo um par de parafusos de cabeça cilíndrica flangeada 78 tendo hastes rosqueadas aparafusadas nos respectivos furos rosqueados 80 providos em localizações diametralmente opostas no flange que se estende radialmente 44 do transportador planetário 36. Uma arruela 82 é ensanduichada entre a cabeça flangeada de cada um dos parafusos de cabeça cilíndrica 78 e o flange 44 do transportador planetário 36, tendo uma região radialmente externa que se sustenta axialmente contra uma superfície axialmente externa do flange anular 72 do prendedor cilíndrico 66.[0024] Along with the cylindrical fastener 66, the present invention includes a retention arrangement comprising a pair of flanged cylindrical head screws 78 having threaded rods screwed into respective threaded holes 80 provided at diametrically opposite locations in the radially extending flange 44 of the planetary conveyor 36. A washer 82 is sandwiched between the flanged head of each of the head screws cylindrical flange 78 and flange 44 of planetary conveyor 36, having a radially outer region bearing axially against an axially outer surface of annular flange 72 of cylindrical fastener 66.

[0025] A seguir, temos a descrição do funcionamento da presente invenção. Qualquer tendência para o afrouxamento do prendedor cilíndrico 66 é detida pelo arranjo de retenção definido pelos dois parafusos de cabeça cilíndrica flangeada 78. Especificamente, como visto na figura 3, a rotação no sentido anti-horário do prendedor cilíndrico 66 desparafusará o prendedor da peça de suporte 34 da parede 32. Contudo, a força de atrito na interface das arruelas 82 e do flange de prendedor 72 será transferida para um lado de baixo de cada uma das cabeças flangeadas dos parafusos de cabeça cilíndrica 78, com esta força de atrito tendendo a acionar os parafusos de cabeça cilíndrica no para fazer com que s parafusos de cabeça cilíndrica sejam girados no sentido horário. Esta direção de rotação tende a aparafusar os parafusos de cabeça cilíndrica 78 no transportador planetário 36, que tende, deste modo, a apertá-los contra o prendedor cilíndrico 66 e detém o desaparafusamento dos últimos.[0025] Next, we have the description of the operation of the present invention. Any tendency for the cylindrical fastener 66 to loosen is arrested by the retaining arrangement defined by the two flanged socket head screws 78. Specifically, as seen in Figure 3, counterclockwise rotation of the cylindrical fastener 66 will unscrew the fastener from the support piece 34 from the wall 32. However, the frictional force at the interface of the washers 82 and the fastener flange 72 will be transferred to an underside of each of the flanged heads of the pan head screws 78, with this frictional force tending to drive the pan head screws in to cause the pan head screws to be turned clockwise. This direction of rotation tends to screw the cylindrical head screws 78 into the planetary conveyor 36, which tends in this way to tighten them against the cylindrical fastener 66 and stops the unscrewing of the latter.

[0026] É aqui notado que os furos rosqueados 80 se estendem axialmente através do flange 44 do transportador planetário 36 e são axialmente alinhados com a superfície virada axialmente para fora da pista interior da fila externa do conjunto de mancal de rolos afunilados 52. Durante a desmontagem da transmissão 10, uma vez que os componentes axialmente para fora do transportador planetário 36 são removidos, de modo a expor o transportador planetário, como mostrado na figura 3, os parafusos que têm um comprimento substancialmente igual à dimensão axial do transportador planetário 36 podem ser substituídos pelos parafusos de cabeça cilíndrica 78 e aparafusados nos furos rosqueados 80 e contra a pista interna 50 da fila axialmente externa de mancais de rolos afunilados, e então aparafusados adicionalmente para fazer com que o transportador planetário 36 seja deslocado axialmente para fora, para desengatar da peça de suporte 34 da parede 32 e do arranjo de mancal de rolos afunilados 52.[0026] It is noted here that the threaded holes 80 extend axially through the flange 44 of the planetary conveyor 36 and are axially aligned with the axially outward facing surface of the inner race of the outer row of the tapered roller bearing assembly 52. During the disassembly of the transmission 10, once the axially outward components of the planetary conveyor 36 are removed, so as to expose the planetary conveyor, as shown in Figure 3, the bolts having a length substantially equal to the axial dimension of the planetary conveyor 36 may be replaced by the socket head bolts 78 and screwed into the threaded holes 80 and against the inner race 50 of the axially outer row of tapered roller bearings, and then further screwed to cause the planetary conveyor 36 to be moved axially outwardly to disengage from the support piece 34 of the wall 32 and the roller bearing arrangement s tapered 52.

[0027] Referindo-se à figura 5, é ilustrada uma segunda modalidade da invenção que, em sua maior parte, é exatamente semelhante à modalidade mostrada nas figuras 1 a 4, com os mesmos números de referência sendo usados para indicar partes iguais. A única diferença entre as duas modalidades é que na figura 5 é mostrado um prendedor 66’ que é semelhante ao prendedor 66, exceto pelo fato de que é provido um flange 72’ que se estende radialmente, que difere do flange 76 da primeira modalidade apenas na medida em que inclui diametralmente recessos opostos 84 no perímetro do mesmo, com os recessos 84 respectivamente recebendo e sendo conformados em complementaridade às arruelas 82. Assim, em vez de atuar para exercer uma força axial no flange 72’, as arruelas 82 atuam para impedir o afrouxamento da rotação do prendedor 66’ ao apresentar um obstáculo, bloqueando, assim, tal rotação.[0027] Referring to figure 5, a second embodiment of the invention is illustrated which, for the most part, is exactly similar to the embodiment shown in figures 1 to 4, with the same reference numerals being used to indicate equal parts. The only difference between the two embodiments is that in figure 5 a fastener 66' is shown which is similar to the fastener 66, except for the fact that a radially extending flange 72' is provided, which differs from the flange 76 of the first embodiment only in that it includes diametrically opposed recesses 84 in the perimeter thereof, with the recesses 84 respectively receiving and being shaped in complementarity to the washers 82. Thus, instead of acting to exert an axial force on the flange 72', washers 82 act to prevent slackening of rotation of fastener 66' when presenting an obstacle, thus blocking such rotation.

[0028] Embora o relatório descreva as modalidades exemplares da presente descrição, estas descrições não devem ser vistas em um sentido limitador. Em vez disso, os princípios de retenção exemplificados pela presente invenção, como definidos nas reivindicações, podem ser praticados em uma variedade de modalidades que lidam não apenas de transmissões, mas com modalidades estruturais apropriadas de outras técnicas. Dito de outra forma, fica evidente que o princípio básico de usar um retentor rosqueado para impedir que um prendedor rosqueado se desaparafuse ao arranjar o retentor em engate por atrito com o prendedor de tal modo que as forças de atrito, geradas pelo prendedor que tende a girar em uma direção de afrouxamento, tendam a girar o retentor em uma direção de aperto, pode ser empregado em uma grande variedade de arranjos estruturais. O mesmo pode ser dito do princípio de impedir o desaparafusamento de um prendedor rosqueado ao construir e localizar um prendedor rosqueado e retentor, de tal modo que o retentor bloqueie o prendedor rosqueado de girar na direção de afrouxamento.[0028] Although the report describes exemplary embodiments of the present description, these descriptions should not be viewed in a limiting sense. Rather, the retention principles exemplified by the present invention, as defined in the claims, can be practiced in a variety of modalities that deal not only with transmissions, but with appropriate structural modalities of other techniques. Stated another way, it is evident that the basic principle of using a threaded retainer to prevent a threaded fastener from unscrewing by arranging the retainer in frictional engagement with the fastener such that frictional forces, generated by the fastener tending to rotate in a loosening direction, tend to rotate the retainer in a tightening direction, can be employed in a wide variety of structural arrangements. The same can be said of the principle of preventing unscrewing of a threaded fastener by constructing and locating a threaded fastener and retainer such that the retainer blocks the threaded fastener from turning in the loosening direction.

Claims

1. A combination of a first component, a second component mounted on the first component to move axially along a first axis with respect to the first component and occupying a desired axial position with respect to the first component, an arrangement of threaded fasteners (66, 66'), axially threaded into said first component and which axially engage the second component to prevent movement of the second component from said desired axial position, and an arrangement of retainers which are in axial engagement with the threaded fastener arrangement (66, 66') and which prevents axial movement of the threaded fastener arrangement (66, 66') away from said second component, said composition further comprising: said retainer arrangement including at least one set of threaded fasteners which is in frictional engagement with said threaded fastener arrangement (66, 66') and which acts to block the loosening of said threaded fastener arrangement (66, 66') 66'); wherein said at least one set of threaded retainers includes an annular friction fit member associated therewith and which tightly engages the threaded fastener arrangement (66, 66') to arrest axial movement of said threaded fastener arrangement (66, 66') away from said first member; and wherein said annular frictional engaging member of said at least one set of threaded fasteners acting, in response to said array of threaded fasteners (66, 66') rotating in a loosening direction, to transfer a frictional force from said array of threaded fasteners (66, 66') to said at least one set of threaded retainers tending to tighten said at least one set of threaded retainers, and thereby , tending to increase the frictional force that stops the loosening of said arrangement of threaded fasteners (66, 66').

2. Combination according to claim 1, characterized in that the arrangement of threaded fasteners (66, 66') includes an annular flange (72) that extends radially; and said annular friction element overlying said annular flange (72).

3. Combination according to claim 1, characterized in that said annular flange (72) includes at least one arched recess (84) formed in a perimeter of said flange (72); and said annular friction element having a perimeter shaped in complementarity to and received in said at least one recess (84).

4. Combination according to claim 1, characterized in that said at least one set of threaded retainers is a cylindrical head screw (78) flanged with a head flange piece that engages a washer (82), forming the application element by friction.

5. Combination according to claim 1, characterized in that the threaded retainer arrangement includes at least a second set of threaded retainers identical to said at least one threaded retainer set, with the at least second set of threaded retainers being located on an opposite side of said threaded fastener arrangement (66, 66') from said at least one threaded retainer set.

6. Combination according to claim 5, characterized in that said at least one and said at least second sets of threaded retainers each include an annular frictional application member associated therewith and tightly engaging the flange (72) of said set of threaded retainers to arrest axial movement of the flange (72) away from said second component; and the annular friction engagement member of each of the at least one and at least second threaded retainers acting in response to the threaded fastener tending to loosen to transfer frictional forces, tending to cause said at least one set of threaded retainers and said at least second threaded retainer to tighten, thereby arresting loosening of said threaded fastener.

7. Combination according to claim 6, characterized in that said flange (72) of the threaded fastener is in the form of an annular flange (72) having an exposed annular planar surface (62), facing axially; and said annular friction member of each of said at least one set of threaded retainers and at least second threaded retainer overlying a circular disc and engaging said annular planar surface (62).

8. Combination according to claim 6, characterized in that said annular flange (72) includes first and second arcuate recesses (84) formed on a perimeter thereof; and said annular friction element of each of said at least one set of threaded retainers and at least second threaded retainer having a circular perimeter shaped in complementarity to and received, respectively, in said first and second arcuate recesses (84).

9. Combination according to claim 8, characterized in that each of said at least one set of threaded retainers and at least one second set of threaded retainers is a cylindrical head screw (78) flanged with a head flange piece engaging a washer (82), forming the friction application element.

10. Transmission assembly, characterized in that it comprises: a wall (32) defining a first spindle and a planetary conveyor (36) defining a second spindle mounted to slide axially along the first spindle to a desired axial location; a threaded fastener, threaded onto said first spindle and having a radially extending flange engaged with said planetary conveyor (36) for securing the second spindle in the desired axial location; and a threaded retainer arrangement including at least one threaded retainer including a rod received in an axially extending threaded hole in said planetary conveyor (36) with said at least one threaded retainer including a head arrangement joined to the rod and engaging the threaded fastener to lock the loosening of said threaded fastener; wherein said head arrangement includes a washer (82) that lightly engages said threaded fastener to arrest axial movement of said threaded fastener away from said planetary conveyor (36); and wherein said washer (82) which acts, in response to rotation of said threaded fastener in a loosening direction, to transfer a frictional force from said threaded fastener to said at least one threaded retainer tending to relieve said at least one threaded retainer and thereby tending to increase the frictional force which arrests loosening of said threaded fastener.

11. Transmission assembly according to claim 10, characterized in that said arrangement of heads of at least one threaded retainer is located in engagement with an axially facing end surface of said flange of that threaded fastener.

12. Transmission assembly according to claim 11, characterized in that said at least one threaded retainer includes a rod and washer (82) of the head arrangement is received in the rod and extends radially outwards and overlaps said axially facing end surface of said flange of that threaded fastener; and the washer (82) of said at least one threaded retainer exerting said axial force on the axially facing end surface of said flange of that threaded fastener.

13. Transmission set according to claim 10, characterized in that the washer (82) is received on the rod and extends radially out of the rod; and said flange of that threaded fastener being provided with a recess shaped in complementarity to, and receiving a peripheral part of said washer (82), by means of which said washer (82) engages the flange of said threaded fastener and thereby prevents loosening of said threaded fastener.

14. Transmission set according to claim 10, characterized in that said arrangement of threaded retainers includes at least one second threaded retainer, identical to said at least one threaded retainer, being axially threaded into said planetary conveyor (36) in a location diametrically opposite to said at least one threaded retainer; and the head arrangement of said at least second threaded retainer engaging said threaded fastener to block loosening of said threaded fastener.

15. Transmission assembly according to claim 14, characterized in that said head arrangement of the at least second threaded retainer is located to exert an axial force on an axially facing end surface of said flange of that threaded fastener.

16. Transmission assembly according to claim 15, characterized in that the head arrangement of said at least second threaded retainer includes a washer (82) extending radially outside the threaded rod of the at least second threaded retainer; and the washer (82) of the at least second threaded retainer exerting said axial force on the axially facing end surface of said flange of that threaded fastener.

17. Transmission assembly according to claim 15, characterized in that the head arrangement of said at least second threaded retainer includes a washer (82) extending radially outside the threaded rod of the at least second threaded retainer; and said threaded fastener flange including first and second recesses (84), respectively, shaped in complementarity to and receiving external peripheral parts of respective washers (82) of the at least one and at least second threaded retainers, thereby blocking loosening of the threaded fastener.

18. Transmission assembly according to claim 14, characterized in that it additionally includes a bearing assembly (52) having an arrangement of internal races mounted on said planetary conveyor spindle (36); and said planetary conveyor (36) including an annular flange (72) supporting an axially facing surface (62) of said bearing assembly inner race arrangement (52); and the threaded rods of said at least one and second threaded fasteners (66, 66') being respectively located in the first and second threaded holes extending axially through said annular flange (72) of the planetary conveyor (36) in axial alignment with the axially facing surface (62) of the inner race arrangement, whereby, during disassembly of the planetary conveyor (36) from the bearing assembly (52), the at least one and second fasteners The threaded fasteners (66, 66') can be removed to allow the first and second longer threaded fasteners (66, 66') to be threaded into the first and second threaded holes respectively in order to exert an axial force on the inner race arrangement to cause the planetary conveyor (36) to axially separate from the bearing assembly (52).

19. Method to prevent a threaded fastener, used in a combination as defined in claim 1, from a body in which it is threaded to hold an element in place, characterized in that it comprises the steps of: a) providing at least one threaded retainer including a threaded rod, which carries a head arrangement that extends radially outwards; and b) placing the at least one threaded retainer in a position that blocks loosening of the threaded fastener; wherein the placement step includes frictionally engaging the threaded fastener with the head arrangement of the at least one threaded retainer to arrest rotation of the threaded fastener in a first direction tending to loosen the threaded fastener, with rotation in the first direction transferring a frictional force through the head arrangement to the threaded retainer tending to relieve the threaded retainer and thereby tending to increase the frictional force it holds loosening the threaded fastener.