Rocker switch

Abstract

A rocker switch that can include multiple redundancy at each position. Specifically, the rocker switch is a two-position rocker switch with both positions in line and with double or triple redundancy at each position. The rocker switch still provides a user with definitive snap “on” switching and the snap positions which can be used to activate multiple redundant internal circuit switches to provide for increased reliability of switch operation.

Claims

1. A rocker switch comprising: a switch head; a button support attached to said switch head and configured to rotate to a first detent position located on a first side of a center position and a second detent position located on a second side opposing said first side of said center position; a first lever arm with a first rotation point arranged on said second side; a second lever arm with a second rotation point arranged on said first side; a first circuit switch arranged so as to be switched when said first lever arm is rotated about said first rotation point; a second circuit switch arranged so as to be switched when said second lever arm is rotated about said second rotation point; a first snap feel mechanism, said first snap feel mechanism comprising: a first pin having a ball end, a base, and a center section therebetween; and a first ball bearing; wherein said first lever pushes said first pin against a first pin biasing mechanism; wherein, as said first lever pushes said first pin, said first ball bearing is pushed from being adjacent said center section of said first pin and against a first bearing biasing mechanism by said ball end of said first pin; and wherein said first ball bearing is adjacent said ball end of said first pin when said first lever engages said first circuit switch; and a second snap feel mechanism, said second snap feel mechanism comprising: a second pin having a ball end, a base, and a center section therebetween; and a second ball bearing; wherein said second lever pushes said second pin against a second pin biasing mechanism; wherein, as said second lever pushes said second pin, said second ball bearing is pushed from being adjacent said center section of said second pin and against a second bearing biasing mechanism by said ball end of said second pin; and wherein said second ball bearing is adjacent said ball end of said second pin when said second lever engages said second circuit switch; wherein moving said switch head in a first direction from a stable position causes: said button support to rotate from said center position to said first detent position; said button support to depress said first lever arm about said first rotation point; and said first lever arm to engage said first circuit switch; and wherein moving said switch head in a second direction opposing said first direction from said stable position causes: said button support to rotate from said center position to said second detent position; said button support to depress said second lever arm about said second rotation point; and said second lever arm to engage said second circuit switch.

2. The rocker switch of claim 1, wherein said first snap feel mechanism will bias said button support to said center position.

3. The rocker switch of claim 1, wherein said second snap feel mechanism will bias said button support to said center position.

4. The rocker switch of claim 1, wherein said first circuit switch is one of a plurality of switches engaged by said first lever arm.

5. The rocker switch of claim 4, wherein said plurality of switches engaged by said first lever arm includes two switches.

6. The rocker switch of claim 4, wherein said plurality of switches engaged by said first lever arm includes three switches.

7. The rocker switch of claim 1, wherein said switch head is generally a trapezoidal prism.

8. The rocker switch of claim 1, wherein said switch head is generally a squircle.

9. The rocker switch of claim 1, wherein said ball end is generally a sphere.

10. The rocker switch of claim 1, wherein said ball end is generally a capsule.

11. A rocker switch comprising: a switch head; a button support attached to said switch head and configured to rotate to a detent position located on a first side of a center position; a lever arm with a rotation point arranged on a second side opposing said first side of said center position; a circuit switch arranged so as to be switched when said lever arm is rotated about said rotation point; and a snap feel mechanism, said snap feel mechanism comprising: a pin having a ball end, a base, and a center section therebetween; and a ball bearing; wherein said lever pushes said pin against a pin biasing mechanism; and wherein, as said lever pushes said pin, said ball bearing is pushed from being adjacent said center section and against a bearing biasing mechanism by said ball end; wherein said ball bearing is adjacent said ball end when said lever engages said circuit switch; and wherein moving said switch head in a first direction from a stable position causes: said button support to rotate from said center position to said detent position; said button support to depress said lever arm about said rotation point; and said lever arm to engage said circuit switch.

12. The rocker switch of claim 11, wherein said first circuit switch is one of a plurality of switches engaged by said first lever arm.

13. The rocker switch of claim 12, wherein said plurality of switches engaged by said first lever arm includes two switches.

14. The rocker switch of claim 12, wherein said plurality of switches engaged by said first lever arm includes three switches.

15. The rocker switch of claim 11, wherein said switch head is generally a trapezoidal prism.

16. The rocker switch of claim 11, wherein said switch head is generally a squircle.

17. The rocker switch of claim 11, wherein said ball end is generally a sphere.

18. The rocker switch of claim 11, wherein said ball end is generally a capsule.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 depicts a left top perspective view of a first embodiment of a rocker switch.

(2) FIG. 2 depicts a left top perspective view of a second embodiment of a rocker switch.

(3) FIG. 3 depicts a bottom view of the rocker switch of FIG. 1.

(4) FIG. 4 depicts a top view of the rocker switch of FIG. 1 in the “off” position (home position).

(5) FIG. 5 depicts a side view of FIG. 4.

(6) FIG. 6 depicts a cut-through along line A-A in FIG. 4.

(7) FIG. 7 depicts a top view of the rocker switch of FIG. 1 in the first on position.

(8) FIG. 8 depicts a side view of FIG. 7.

(9) FIG. 9 depicts a cut-through along line B-B in FIG. 7.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT(S)

(10) The following detailed description and disclosure illustrates by way of example and not by way of limitation. This description will clearly enable one skilled in the art to make and use the disclosed systems and methods, and describes several embodiments, adaptations, variations, alternatives and uses of the disclosed systems and methods. As various changes could be made in the above constructions without departing from the scope of the disclosures, it is intended that all matter contained in the description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

(11) FIGS. 1 and 2 show perspective views of two different embodiments (100) and (200) of rocker switches. The embodiments of FIGS. 1 and 2 are essentially the same in that each includes a switch head (101) or (201) which extends from a housing (111). However, the switch heads (101) and (201) are of different shape. The switch head (101) or (201) is the portion of the switch (100) or (200) that is intended to be human activated. As such, the switch head (101) or (201) may be any form of object which is designed to be pushed or pulled by a human.

(12) In the depicted embodiment of FIG. 1, the switch head (101) comprises the general shape of a trapezoid or triangular prism which extends from the housing. In the depicted embodiment of FIG. 1, the trapezoid prism is generally in the form of a trapezium prism with rounded corners making both sides (103) of equal height. The sides (103) may include knurling or texturing to increase friction when contacted by a finger or thumb the pad of which would typically be placed against the side (103) and possibly over the top (113) to push or pull the head (101) generally perpendicular to its major axis (131). Alternatively, the head (101) can be moved by the side of a finger or thumb pushing against a side (103).

(13) In the embodiment of FIG. 2, the switch head (101) comprises a generally square or “squircle” shape in cross section. The upper surface thereof is typically concave in at least one major dimension and may include knurling or texturing to increase friction when contacted by a finger or thumb the pad of which would typically be placed into the concave surface. In both the embodiments of FIGS. 1 and 2, the switch head (101) or (201) is surrounded by a cowl (105) which is designed to allow the head (101) to move relative to the housing (111) while still keeping objects (including dust and dirt) and moisture out of the housing (111).

(14) Each position of the switch (100) or (200) can activate one, two, three, or more circuit switches simultaneously providing it with multiple redundancy of virtually any level. This type of switch (100) or (200) with double or triple redundancy is well suited for mounting in a grip or similar component of an aircraft for activation by a pilot with their thumb. However, it may be used in any application which calls for a rocker switch with two activation positions on either side of a center off position or any other application where three distinct positions are desired.

(15) As shown in FIG. 3, at the lower portion of the housing (111), and regardless of if it is switch (100) or (200), there are mounted a number of circuit switches (301), (303), (311), (313), (321), and (323). In the depicted embodiment, there are six such circuit switches (301), (303), (311), (313), (321), and (323) depicted. As this is a two-position switch, each “on” position will activate three of the circuit switches (301), (303), (311), (313), (321), and (323) compared to other positions which provides each position with triple redundancy. The circuit (301), (303), (311), (313), (321), and (323) are, thus, arranged in triplets with circuit switches (301), (311), and (321) being together and circuit switches (303), (313) and (323) being together. It should be apparent that each triplet of switches could be replaced by a single circuit switch, two circuit switches, or by four or more circuit switches if a different level of redundancy is desired. Each of the circuit switches (301), (303), (311), (313), (321), and (323) will generally comprise a micro or sub-micro button switch with a lever to assist with activation such as, but not limited to, the B1-5 lever series of switches or the B3 basic series of switches with auxiliary levers both of which are produced by Otto. This particular type of circuit switch is, however, by no means required and any sort of circuit switch activated by the motion of the switch (100) or (200) as discussed herein may be used.

(16) For the sake of simplicity in the remaining discussion, the switch (100) embodiment of FIG. 1 will be used as an exemplary embodiment of the switch (100) or (200). However, it should be apparent that since the only difference between switch (100) and switch (200) is the shape of the head (101) or (201), the remaining discussion applies equally well to either embodiment even through switch (100) is discussed herein.

(17) The head (101) typically has three different linear positions into which it may be placed. In FIGS. 4, 5, and 6, the head (101) is shown in a center position, which, in this embodiment, is the off or home position. In FIGS. 7, 8, and 9 the head (101) is in a first detent position, which, in this embodiment, is also referred to as the forward position. The third positon or second detent position is a backward position. The use of the terms “forward” and “backward” here are arbitrary designators and are used solely to indicate that forward is on the opposing side of center to the backward position (which is not shown but is discussed below).

(18) The switch (100) will now be discussed in conjunction with the various internal components. The structure of the internals of the switch (100) are best seen by Examining FIGS. 6 and 9 as each of these shows cut-through drawings of the switch (100) as indicated in the respective FIGS. 4 and 7. For ease of discussion and display, FIG. 6 and FIG. 9 are each depicted with only a subset of components labeled due to the large number of close components even though most of the components are visible in both FIGS.

(19) The head (101) is attached to a button support (401). The button (401) is generally semi-circular in cross-section in at least one dimension with a flat upper surface (403) which interfaces with the bottom surface (104) of the head (101). This can make it appear as a portion of a flattened cylinder or sphere, for example. The button (401), depending on embodiment, may be attached to the head (101) in any fashion including, but not limited to, by screws (405), adhesives, or by being integrally molded with the head (101).

(20) The lower surface (407) is generally flat, but includes two ridges or nubs (417A) and (417B). These nubs (417A) and (417B) are typically positioned toward at least two opposing outer corners of the lower surface (407) with one on either side of the major axis (131) of the head (101) or may run generally parallel to the major axis (131) of the head (101), again with one on each side. The nubs (417A) and (417B) are typically in the from of rounded bumps extending downward from the lower surface (407) of the button (401).

(21) There is a hole (409) positioned in the button (401) typically at a point closer to the lower surface (407) than the upper surface (403). Through the hole (409) there is positioned a rod (419) which will also run generally parallel to the major axis (131) of the head (101). This allows for the button (401) to rotate about the rod (419).

(22) Below the lower surface (407) there are positioned two lever arms (431) and (433). The lever arms (431) and (433) are positioned so as to run generally perpendicular to the major axis (131) of the head (101) and each will typically cross the major axis (131). As can be seen from the FIGS., the first lever arm (431), which is the one on the side of the switch (100) closest to the viewer, has its lower rotational connection (435) toward the right side (as viewed) of the switch (100) of FIG. 6. The second lever arm (433), which is spaced from the viewer into the page of FIG. 6, is partially visible behind the first lever arm (431) and is in opposing position with its rotation connection (not visible) on the left side of the head (101) of FIG. 6. It should be recognized that the terms “right” and “left” as used herein are not intended to denote any particular location relative to operation or other components. They are instead used simply to show that the components are in opposing positions relative to a central reference point, in this case the major axis (131).

(23) Each of the lever arms (431) and (433) is positioned over a triplet of circuit switches (301), (311), (321), (303), (313), or (323). Specifically, lever arm (431) is positioned over switches (301) (311) and (321) and lever arm (433) is positioned over switches (303), (313), and (323). The lever arms (431) and (433) are sized and shaped so as to be over each circuit switch (301), (311), (321), (303), (313), or (323) in the associated triplet by effectively the same distance. As can be seen in FIG. 6, the lower surface (437) of the lever arm (431) is in contact with the integrated lever arm (447) of the circuit switch (311). Lever arm (431) is also in similar contact with the integrated lever arms of switches (301) and (321) even though they are not visible in FIG. 6. Similarly, the lever arm (433) is in an essentially mirrored position with the integrated lever arms of switches (303), (313) and (323).

(24) Next to the triplet of switches (301), (311), and (321), there is positioned a snap-feel mechanism. The other side of the switch (100) (into the paper behind switch (301)), also has a similar snap-feel mechanism of essentially mirrored design. The snap-feel mechanism comprises a pin (503) which has a ball end (501). The ball end (501) in the depicted embodiment comprises an elongated cylinder with rounded ends generally in the form of a capsule or spherocylinder. In alternative embodiments, the ball end (501) may be generally spherical or may have other shapes. Typically, however, the ball end (501) will have angled or rounded ends so as to smoothly engage with the ball bearing (601) as discussed later.

(25) The pin (503) may also comprise a widened base (505) which, in the depicted embodiment, is generally cylindrical with flat ends as opposed to the rounded or angled ends of the generally capsule or spherical ball end (501). This, however, gives the pin (503) a loose “dumbbell” shape where there is a narrowed center section (509), which is typically generally cylindrical, between the ball end (501) and the base (505). The pin (503) is placed within a shaft (513) through which it can slide. At the base (505) of the pin (503), there is a compression coil or wave spring (507) which serves to push the pin (503) toward the lever arm (431) and will normally place the ball end (501) into contact with the lower surface (437).

(26) In FIG. 6, There is a ball bearing (601) which may, in an alternative embodiment, be the ball end of another pin, placed in a shaft (613) against another compression coil or wave spring (607). The shaft (613) is generally perpendicular to shaft (513) as shown in FIG. 6. The shaft (613) is also positioned so as to positon the ball bearing (601) in proximity to, and possibly in contact with, the center section (509) of the pin (503). In FIG. 6 the ball bearing (601), regardless of it being in contact with, or not with, the center section (509) is in contact with the ball end (501) generally on a surface more between the dumbbell sides of the pin (503) than any other as can be seen in the FIG.

(27) FIGS. 7, 8, and 9 provide for the positon of the various components when the head (101) when the head (101) has been pushed to the forward position. The forward position typically will involve the head (101) rotating about the pin (419). In the depicted embodiment, the rotation is about 20 degrees from upright but that amount is by no means required and any amount may be used. As can be best seen in FIG. 9, when the head (101) is so rotated, it causes the button (401) to tip forward. This causes the surface (407) to rotate and pushes the nub (417A) into the lever arm (431) at a point spaced from that of the lever arm rotation (435). This causes the lever arm (431) to rotate downward and depress the integrated lever arm (447) which in turn activates the circuit switch (311). The motion of the lever arm (431) also generally simultaneously depresses the integrated lever arms on each of the other circuit switches (301) and (321) in the triplet resulting in all three circuit switches (301), (311), and (321) being activated generally simultaneously.

(28) In addition to activating the circuit switches (301), (311), and (321), the lever arm (431) also pushes the ball end (501) of pin (503) into the shaft (513) against the biasing of spring (507). However, as should be apparent from FIG. 6, the ball bearing (601) is initially in the way of this and impedes the motion of the ball end (501) into the shaft (513). However, as the surfaces of the ball end (501) and ball bearing (601) are generally smooth and rounded (or may be simply angled in alternative embodiments), the force of the lever arm (431) on the ball end (501) will result in the ball end (501) pushing the ball bearing (601) into shaft (607) against spring (607).

(29) Movement of the head (101) to this position is resisted by an amount of force typically proportional to the biasing forces of both spring (507) and/or spring (607) as well as the relative angle in the position of contact between ball head (501) and ball bearing (601) and their relative friction with each other. At some point along the travel of ball head (501) into shaft (513), the point of contact between the ball bearing (601) and ball head (501) alters so that the ball head (501) is no longer pushing ball bearing (601) downward (e.g. along shaft (513)). At this time, the ball head (501) can basically freely slide past ball bearing (601) continuing into shaft (513). In the depicted embodiment, the ball bearing (601) will typically slide or roll along the side of capsule shape of the ball head (501) at this stage.

(30) At the point of clearance of the ball bearing (601), the lever (431) motion begun by the head (101) movement is no longer impeded by the forces of spring (607) or ball bearing (601) and is essentially solely impeded by the lever force of integrated lever (447) and spring (507) which is generally substantially less than the prior combination. Thus, the head (101) movement which was resisted by spring (507), spring (607), integrated lever arm (447), and friction between ball bearing (601) and ball head (501) is much less impeded as only spring (507) and integrated lever arm (447) impede the movement and the head (101) will feel like it “snaps” into position with the lever arm (431) fully depressed as shown in FIG. 9. At this point, the lever arm (431) can rotate no further as the circuit switches' (301), (311) and (321) housings are in the way.

(31) When the user releases the switch head (101), the spring (507) will generally push the pin (503) upward (the reverse direction to the downward direction it was pushed by the user) and the spring (607) will push the ball bearing (601) back in the gap between the ball head (501) and the widened base (505). This motion (along with the spring force of integrated lever arm (447)) serves to push the lever arm (431) back to the position of FIG. 6. Once in the position of FIG. 6, the ball bearing (601) will also generally impede the pin (503) from continuing beyond the position in FIG. 6 as the widened base (505) not having a rounded surface against the ball bearing (601) hinders continued movement. Further, since FIG. 6 corresponds to the central position of the head (101), the snap mechanism interacting with lever arm (433) also impedes further motion.

(32) It should be apparent that while FIGS. 7, 8, and 9 show the motion for the head (101) being moved in the forward direction, the head (101) can also be moved in the backward direction. To put this another way, if FIGS. 7, 8, and 9 show the head at a rotation of 20 degrees, the head (101) can also be rotated to −20 degrees to provide a different point of activation. This would operate in the same way as the motion of FIGS. 7, 8, and 9 (generally in mirror image) except that the lever arm (433) would depress the circuit switches (303), (313), and (323) instead of lever arm (431) depressing circuit switches (301), (311), and (321).

(33) It should be noted that when the head (101) is tilted in the opposing direction to that which would cause the lever arm (431) or (433) to depress the relevant circuit switch triplet, the force of the spring (507) (or the corresponding element for lever arm (433)) could cause the lever arm (431) (or arm (433)) to tilt upward further than the position shown in FIG. 6. However, such arrangement is by no means required and further upward motion of lever arm (431) and/or lever arm (433) could be hindered. For example, this could be by having part of the lever arm (431) or lever arm (433) contact part of the housing (111) as shown in FIG. 6 for lever arm (431) and in FIG. 9 for lever arm (433).

(34) While the invention has been disclosed in conjunction with a description of certain embodiments, the detailed description is intended to be illustrative and should not be understood to limit the scope of the present disclosure. As would be understood by one of ordinary skill in the art, embodiments other than those described in detail herein are encompassed by the disclosed invention. Modifications and variations of the described embodiments may be made without departing from the spirit and scope of the invention.

(35) It will further be understood that any of the ranges, values, properties, or characteristics given for any single component of the present disclosure can be used interchangeably with any ranges, values, properties, or characteristics given for any of the other components of the disclosure, where compatible, to form an embodiment having defined values for each of the components, as given herein throughout. Further, ranges provided for a genus or a category can also be applied to species within the genus or members of the category unless otherwise noted.

(36) Finally, the qualifier “generally,” and similar qualifiers as used in the present case, would be understood by one of ordinary skill in the art to accommodate recognizable attempts to conform a device to the qualified term, which may nevertheless fall short of doing so. This is because terms such as “circular” are purely geometric constructs and no real-world component is truly “circular” in the geometric sense. Variations from geometric and mathematical descriptions are unavoidable due to, among other things, manufacturing tolerances resulting in shape variations, defects and imperfections, non-uniform thermal expansion, and natural wear. Moreover, there exists for every object a level of magnification at which geometric and mathematical descriptors fail due to the nature of matter. One of ordinary skill would thus understand the term “generally” and relationships contemplated herein regardless of the inclusion of such qualifiers to include a range of variations from the literal geometric meaning of the term in view of these and other considerations.