DE1590199A1 - Self-centering toggle switch - Google Patents

Description

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AM.n.Nr. A 18 184 B / Pa

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BOYNE PRODUCTS, INC. Detroit, me. United States

Self-centering toggle switch

The invention relates to a toggle switch construction and is directed in particular to a toggle switch with a movable actuating part which can be pivoted in one of two opposite directions from a centered neutral position and is permanently returned to its neutral position.

The invention is based on the object of creating a Kippsohalti with an actuating member which is veraohwenkbar about an axis from a neutral position, and in which the actuating member is biased in all its positions in its neutral position, so that any play and

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OOPY
ORtGJNAL INSPECTED

, defeated any possible looseness of the actuator is.

Furthermore, the toggle switch according to the invention should be characterized in that the movement of the actuating member from its neutral position in any of its switching positions required force does not increase significantly.

In addition, the toggle switch according to the invention should also have a plurality of fixed and movable contacts, and the movement of the actuator from its neutral position into one of the switching positions is intended to be a selected movement have movable contacts.

The invention is based on a self-centering toggle switch with a housing in which two pairs of fixed contacts are attached at opposite ends and a switching lever with actuating feet is arranged between the housing ends so that it can pivot from a neutral position in both directions and is characterized by a movable contact member between the contacts each fixed contact pair, each of which makes contact with a contact of the associated fixed contact pair, wherein the movement of the switching lever ^; in one direction from the neutral position releases one of the movable contacts from the associated fixed contact and the one movable contact member makes contact with the other fixed contact

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of the associated pair of fixed contacts. _t

The switch according to the invention is preferably identified furthermore by a spring acting between the housing and the shift lever to bias the shift lever into its neutral division. Each is expediently flat and only supported at its ends. The gear lever advantageously has a flat surface which engages the spring between the ends thereof. The inventive container can be designed so that the movable Contact * have a U-shaped cross-section. Sine others It is possible to make the movable contacts L-shaped To give cross-section.

Drawings show in

up ·. 1 shows a longitudinal section through an embodiment of a inventive toggle switch;

iif. 2 a section along line 2-2 of iig. - :;

i'if. 'Take a look at the switch, although you have to Simplification of the illustration of the shift lever is omitted;

iig. 4 shows an ochnitt along the line 4-4 of Hg. ", Where • however the shift lever is in one of its shift positions and only one of the movable contacts is energized;

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-A-

Figure 5 is a section along line 5-5 of Figure 1;

6 shows a section, similar to FIG. 1, of a modified embodiment of a switch according to the invention; and

7 shows a partial section along the line 7-7 in FIG. 6.

Mn switch, as shown for example in FIGS. 1-5 Is, contains a housing 1 made of an insulating Kiaterial, for example a polyamide od. The like. With a Bottom 2 and upstanding side walls 2 and 4 or End walls 5 and 6. Inside the housing 1 there is a substantially rectangular cavity 7, at which four corners, each with an upstanding, essentially flat platform 8 with walls 9 facing one another is, which converge in the direction of the bottom 2. So that a recessed bottom 10 is eitestand. Between each couple of sheet shapes 6 on opposite ends of the housing there is a pair of spaced-apart ribs 11. ^ between each pair of ribs .11 there is a support edge 12 with a downward sloping surface.

Innernalc of the housing 1 are two pairs of solid electrical Conductive contacts not mounted, 7 / with a λο-itaict of each pair each near one end of the housing 1 and the other Kontai: t mounted in the ... vicinity of the other country of this housing is.

009816/0863 bathroom original

The first pair of fixed contacts have upstanding arms 13 or 13a, on which mounting arms 14, 14a are mounted are attached to the corresponding platforms 8 by riveting

15, 15a are attached. The rivets extend through and across the bottom of the housing and terminate in connector pins

16, 16a.

A second pair of fixed contacts includes upstanding arms 18, 18a which are attached to mounting flanges 19, 19a are, which in turn are anchored in the housing by rivets 20, 20a, which are in the connector pins 16, 16a similar connector pins end.

In the cavity 7 is a pair of substantially U-shaped, electrically conductive elastic members 21 and 22 mounted. The member 21 contains a web 23 which is on the housing bottom is attached by means of a rivet 24 and from which two upstanding movable arms 25 and 26 extend. The aim has a cranked portion or a conductive surface 27 which can come into engagement with the fixed contact 13, while arm 26 has a conductive button or surface 28 which is brought into contact with contact 13a can be. The link 22 is similar to the link 21 and has a web portion which is attached to the housing by means of a Rivet 29 is anchored. From it extend two upstanding arms 30 and 31, which are in corresponding conductive

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Surfaces ~ -2 and 33 run out, which with the solid Contacts 20 and 20a can be brought into contact. The rivets 24 and 29 let you h with an electric Power source connected by lines not shown

bring. .

Before assembling the apparatus described so far the upstanding arms of the respective conductors 21 and 22 are bent towards their respective webs so that they run practically parallel to each other, but can be spread apart because of their elasticity.

The switch includes a switch lever 35 made of molded polyamide or other non-conductive body 26 through which a pin 37 extends which is rotatably mounted at its ends in openings in the side walls 3 and 4 of the housing, so that the switch lever about the axis of the Pin 37 can pivot forward and backward. The inner or lower end of the body 3.6 is provided with two pairs of operating feet 38, 39 and 40, 41. $ Between the two pairs of actuation feet 36, the body has a smooth, flat surface 42, as one icann in particular from FIGS. 4 and 5 refer. /

A flat biasing spring 43 is mounted with its ends on the support edges 12 and spans substantially

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BAD ORfGINAt

the full length of the cavity 7. The spring 43 is unsupported between its ends, but lies exactly opposite the flat surface 42 of the body 26. The height of the support edges 12 is chosen such that in its neutral position after the lig. 1 and 2 standing body 26, the spring A: is bent downwards, whereby the flat surface 42 of the body 16 cooperates with the ieder and thereby the body is held in an upright position with respect to the housing. However, the body can be pivoted in the direction of one of the two linden trees of the housing about the axis of the pin? 7, with the spring 4? sags more O ig. 4) and thus exerts a force on the body that tries to return it to its neutral position. The force required to effect a further deflection of the teder 4 3 is essentially uniform, so that there is no great resistance to the pivoting of the shift lever. results. In order to facilitate pivoting of the body, a handle 44 is attached to the body.

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and 22 the body 36. If the shift lever 35 is in its neutral position, the actuating foot 38 is then located against the movable contact 25 and presses its surface

27 in engagement with the contacts 13. The foot element 41 lies against the conductive arm 31 and holds the contacts 13a and 33a in engagement. The feet 39 and 40 are free from engagement

with the corresponding arms 26 and 30, making these arms assume their normal relaxed position in which the contacts

28 and 32 from the respective fixed contacts 13a and 13a are resolved.

When pivoting the shift lever 35 counterclockwise from the position according to FIG. 1 into the position according to FIG. 4, the foot element 3-8 moves out of engagement with the arm 25, whereby the latter moves into its unstressed position and thus causes the contacts 27 and 13 to loosen. That Foot element 39 engages arm 26 and bends the latter, thereby engaging between the contacts and 13a comes. The corresponding lengths and angular distances between the feet 38 and 39 are chosen so that the loosening of contacts 13 and 17 with engagement of contacts 13a and follow one another. Thus, the conductive member 21 cannot unengage with both fixed contacts 13 and 13a at the same time come. The counterclockwise pivoting movement of switch 25 does not call for any change in the relative Contacts 18, 32 and 18a, 33 protruded. This means,

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that the foot 40 is out of engagement with the arm 30 and the foot 41 remains in engagement with the arm 31, although the foot 41 rests more strongly against the arm 31.

After the hand button 44 is released, the spring 43 acts on the flat surface 42 of the body 36 and returns the latter clockwise to its neutral position. Achieved the shift lever is in its neutral position, then the entire length of the flat surface 42 is in engagement with the spring 43, what a downward deflection of the spring is necessary makes so that the pivoting movement of the shift lever into a

"." .- ■ \ '■ - ■■■

the two directions from its neutral position becomes possible. As a result, there is no rocking of the shift lever.

-Was the holding lever 35 clockwise from the position after Fig. 3 pivoted, then the operation of the device similar to the mode of operation described above except that the contacts 27 and 28 remain in their same relative positions according to FIG. And the contacts 32 and 33 respectively capture the contact 13 or the contact 13a release, the release between the Contacts 13a and 33 engage the contacts 32 and 13 goes ahead.

The embodiment of the toggle switch according to the invention, as shown in Figures 6 and 7 includes many

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Parts that are the same as those contained in the embodiment described above. These are identical i'eile therefore also provided with the same reference symbols. In the modified embodiment there are two pairs of solid conductors Contacts 50, 50a and 51, 51a, the contacts .iedes pair correspondingly on the opposite ^ ends of the housing 1 are attached. The contact 50 includes an anchor arm 52 which is attached to the ground by the rivet 15 and to which an upright arm extending lengthways 53 is attached, which runs parallel to the Seitenwandung- and ends shortly before the contact 50a in a laterally extending contact surface 54. Contact 50a includes one Anchor arm 55, which is attached to the housing by the rivet 15a and carries an upstanding contact arm 56, which is spaced but is arranged in the vicinity of the contact 57.

The contact 51 has an anchor arm 57 which is fastened to the housing by the hete 20a and carries an upstanding arm 53 extending in the longitudinal direction parallel to the housing wall 4, which ends shortly before the contact 51a in a laterally extending contact surface 59. The contact 51a includes an anchor member 60 which is secured to the housing by means of the rivets 20 and carries an upstanding> contact arm 61 at a distance, however, is disposed in the vicinity of the arm 59th

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A "" general L-shaped, resilient conductive member 62 is attached to the housing by an arm 63 through the hete 24 and carries an upstanding flexible arm 63 with conductive Buttons or surfaces 64 and 65 between the contacts 54 and 56, the arm 6? so under tension that he normally engages contacts 54 and 64. A similar conductive member 66 is provided with a mounting bracket 67 mounted in the housing with the aid of the rivet 29 and carries an upstanding arm 68 which is in conductive heads or Surfaces 69 and 70 between contacts 59 and 61 ends. The arm 68 is pretensioned in such a way that the contact 69 normally engaged with contact 59.

The shift lever 72 contains a non-conductive body 7? » which is pivotably mounted in the housing 1 by means of the pin 37 which penetrates the body 73. The pin 37 runs also through enlarged openings 74 in the contact arms 5? and 58 so as to allow engagement between the pin and to prevent the contact arms. The dungeon 7? owns a flat surface 75 at its lower., or inner iinde, which is engaged with a reder 43. The inner sin The body is also equipped with a pair of operating knobs or -fiiien 76 and 7 7, which span the leather 43. On the body there is a confirmation button 7c connected to the To facilitate pivoting of the body about the axis of the pin 37.

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6, then none of the feet 16 or 77 engages the associated contact arm 63 or 68. As a result, the resilient arms 63 and 68 hold the contacts 64 and 69 in engagement with the fixed contacts 54 and 68, respectively. 59. When the body 73 is pivoted counterclockwise from the position shown in FIG. The contact arm 68 remains in its initial position. When the switch button 78 is released, the spring 43 returns the body 73 to its neutral position.

A clockwise pivoting movement of the switching lever 72 from the position according to FIG. 6 causes the engagement between the foot 77 and the arm 68 and thus the successive release of the contacts 59 and 69 and the grip of the contacts 70, 61, but without changing the position of arm 63.

Switches of the type described are particularly suitable electrical systems for reversing motors, but can also be used in other circles where a V / end switch is required is.

Sponsorship claims:

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Claims (6)

»3 A 18 184 B / Pa Claims; "1. Self-centering toggle switch with a housing in which two pairs of fixed contacts at opposite ends are attached and a control lever having operating feet between the housing ends from a neutral position is arranged pivotable in both directions, characterized by a movable contact member (21, 22; 62, 63) between the contacts (14, Ha, 18, 18a * 50, 50a, 51, 51a) of each fixed contact pair, each of which makes contact with a contact of the associated fixed contact pair, the movement of the switching lever (35, 72) in a direction from the neutral position one of the movable contacts (21, 22; 62, 66) from the associated fixed contact releases and contact of one movable contact member with the other fixed contact of the associated pair of fixed contacts. 2. Switch according to claim 1, marked * is marked by one between the housing (1) and the shift lever (35, 72) acting spring (43) to bias the shift lever into its neutral position. - 2 009816/0863 ΊΗ 3. Switch according to claim 2, characterized in that the spring (4?) Is flat and only supported at their ends. 4. Switch according to claim 2 and 3, characterized in that g e k e η η ζ e i c h ne t that the shift lever (35, 72) has a flat (42) with the spring (43) between the ends of which are engaged. 5. Switch according to one or more of the preceding "claims, characterized in that that the movable contacts (21, 22) have a U-shaped cross section. 6. Switch according to one or more of claims 1 to 4, characterized in that the movable Contacts (62, 66) have an L-shaped cross section. 009816/0863 Blank page