公开(公告)号：US3752944A

公开(公告)日：1973-08-14

申请号：US3752944D

申请日：1971-11-01

Applicant: CONTROLS CO OF AMERICA

Inventor： WILLIGMAN J ,  CARTIER R ,  OBERMANN G

IPC: H01H43/10 ,  G05B19/06 ,  H01H19/63 ,  H01H43/02 ,  H01H3/42

CPC classification number: H01H43/026 ,  H01H19/63

Abstract: The timer has switches including upper and lower passive blades and an active blade therebetween. The distal end of the lower passive blade has depending spacers which straddle the cam upon which the follower on the distal end of the active blade rides. The spacers reference the lower passive blade off the hub of the drum type program cam. The lower passive blade is provided with a rest or stop for the upper passive blade limiting downward movement of that blade. With precision molding, both passive blades are accurately referenced from the cam hub and the location of the follower which actuates the active blade is precisely located. Accuracy of switching is increased without increased precision in manufacture. Use of two cam tracks permits simultaneous actuation of the active and ''''passive'''' blades to effect faster switching. It is possible to provide a ''''makemake'''' arrangement instead of the double throw arrangement.

Abstract translation: 定时器具有包括上和下被动叶片和其间的有效叶片的开关。 下部被动叶片的远端具有悬挂在凸轮上的固定间隔件，活动叶片的远端上的从动件骑在该凸轮上。 隔离片将下部被动叶片从鼓式程序凸轮的轮毂上引导。 下部被动叶片设置有用于上部被动叶片的休息或停止，从而限制该叶片的向下运动。 通过精密成型，两个被动叶片都从凸轮毂精确地参考，驱动活动叶片的随动件的位置精确定位。 切换精度提高而不增加制造精度。 使用两个凸轮轨道允许同时激活主动和“被动”叶片以实现更快的切换。 可以提供“make-make”而不是双掷装置。

公开(公告)号：US3717043A

公开(公告)日：1973-02-20

申请号：US3717043D

申请日：1971-10-01

Applicant: CONTROLS CO OF AMERICA

Inventor： CARTIER R

IPC: F16H31/00 ,  H01H43/10 ,  F16H27/00

CPC classification number: F16H31/004 ,  H01H43/102 ,  Y10T74/115 ,  Y10T74/1503 ,  Y10T74/2106

Abstract: The continuously driven drive disc has a crank provided with a drive pawl on one end and a depending finger or feeler on the other end. A retracting lever is also carried by the drive disc and includes a depending cam portion which is adapted to engage a splitter fixed on the end plate of the timer. A single spring acts on the lever to force it against the pawl crank to hold the pawl in retracted position against the bias of the same spring acting on the pawl in the engaging direction. However, when the cam depending from the positioning lever engages the splitter the retracting lever is moved to a position allowing the pawl to move into engagement with the ratchet teeth on the inside of the timing cam drum. Initially, however, the pawl is prevented from moving into contact with the ratchet teeth due to a portion of the crank engaging the splitter. When the sensing portion of the crank drops off of the splitter the spring force drives the pawl towards the ratchet. In one version this causes the pawl to engage the teeth and drive the timing cam drum until the cam depending from the lever clears the splitter, at which time the net spring force returns the pawl to a retracted position as the spring returns the lever to its restraining position. In another version the feeler portion of the pawl crank may engage a mask carried by the drive disc and prevent the pawl from engaging the ratchet teeth, thus prolonging the interval until the mask has been moved out of its blocking position. Selective use of this interval extending concept is achieved by making some of the ratchet teeth longer than others so that even if the mask is in the blocking position the pawl can reach a tooth and index the timing cam. Spacing of the teeth can be varied so long as the longest interval does not exceed any two adjacent small steps. The long tooth, short tooth, and variable step features may be combined in a different ratchet configuration. The mask may be mounted on a plate which can be actuated on each step to disengage the mask from the drive disc and permit a return spring to return the mask to a zero position to insure full availability of the interval stretching feature.

Abstract translation: 连续驱动的驱动盘具有在一端设置有驱动爪的曲柄，另一端具有悬挂的手指或触针。 牵引杆也由驱动盘承载，并且包括一个悬挂凸轮部分，该凸轮部分适于接合固定在定时器的端板上的分配器。 单个弹簧作用在杠杆上以迫使其抵靠棘爪曲柄以克服在接合方向上作用在棘爪上的相同弹簧的偏压将卡爪保持在缩回位置。 然而，当从定位杆悬挂的凸轮接合分离器时，缩回杆移动到允许棘爪移动成与定时凸轮鼓内侧的棘轮啮合的位置。 然而，起初，由于曲柄的一部分与分离器接合，防止棘爪与棘轮齿接触。 当曲柄的感测部分从分离器掉下时，弹簧力将棘爪驱动向棘轮。 在一个版本中，这使得棘爪接合齿并驱动定时凸轮鼓，直到从杠杆离开的凸轮清除分离器，此时当弹簧将杠杆返回到其时，净弹簧力将棘爪返回到缩回位置 限制位置