DE6918342U - REVERSE SWITCH. - Google Patents

Description

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32-way switch contains a base plate or a block first and second pairs of fixed contacts are attached, a portion of which is adjacent to the Wall of a "hole rests, which is formed in the center of the base plate. A cylinder is rotatable in this hole arranged, the cylinder first and second movable Contacts. An actuator arm is provided to move the cylinder between a first position in which the first and second movable contacts the contacts of the first and second pairs of fixed contacts, respectively connect with each other and move back and forth to a second position in which the first and second

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movable contacts each have different contacts of the first contact pair with the contacts of the second contact pair associate.

The present invention is mainly aimed at a new one and improved switches, the first and second pairs of fixed contacts and first and second movable ones Has contacts through which the contacts of the optional first and second pairs of the fixed contacts with each other can be connected and on the other hand different contacts of the first contact pair with the contacts of the second pair of contacts can be connected.

Ss is also intended to provide a new and improved switch of the type described above for use with an electrical Motor can be specified to reverse the direction of rotation of the motor.

The invention further aims to provide a new and improved one Specify switch of the type described above, which contains 6 contact strips, through three pairs of contact strips are formed, the contacts of each contact pair being equal to one another.

Such a switch should have the advantage that it is fast and can be assembled cheaply from a minimum of parts.

According to the invention, a new and improved switch of the above type is also intended, which is easily on can be attached to the housing or body of a trigger operated switch, the latter The switch is of such a type that it can be mounted in the housing of a portable electrical device.

Lie Invention "also aims to provide a new and improved Specify switch of the kind taken into consideration, the fixed one Having contact strips, each of which has an end portion which is bent so that a Einstecklzlcame is formed.

In the following the invention will be closer to hand from in the Preferred example shown in the drawing to be discribed. In the drawing shows:

Pig. 1 is a top plan view of an embodiment a switch according to the invention, in which this switch is operationally with a interacts by an iPrigger operated switch, the latter Switch is designed such that it is in. The housing of a portable electrical Device can be attached;

Pig. 2 is an enlarged, exploded perspective view View in an embodiment of the switch according to the invention is shown}

Pig. 5 is an enlarged view of the rotatable

Element of the switch partly in elevation and partly in vertical section;

Pig. 4 is a top plan view of the Pig. 3 6 ^0ΖΘ ^ ο ^ ^β element;

Pig. 5 is a bottom view of the in Pig. 3 shown Element;

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Fig. 6 is a plan view in which only the fixed Contacts and the block in which they are attached are shown;

Pig. 7 a section along the line 7-7 in Piß · 6} Ui id

8 shows a schematic electrical circuit diagram, in which "for example the current paths are shown, which are caused by the actuation of the switch can be chosen

The switch formed in accordance with the present invention has a basic structure that comprises a block 10 of dielectric Material having end walls 11, side walls 12, and top and bottom surfaces 14 and 15, respectively, is in the block 10 a through hole 16 is provided in the middle · In the block 10 there are two recesses 18 and 19, which are open to the surface 14. The recess 18 has a narrow neck portion 18a which into the bore 16 opens} this recess has a wider neck part 18b, which opens towards a side wall 12 of the block is. The recess 19 is identical to the recess 18 and is offset from this and arranged in the opposite direction, as can be seen from Figs. 2 and 6

In the block 10 a small slot 20 is formed which has the same depth as the recess 18; this slot opens into the end face 14 of the block and also into the bore 16. The block 10 contains a similar slot 21, which has the same depth as the recess 18. This latter slot is towards the end face 14 of the block and also open to the bore 16. In reality, the slots 20, 21 can be part of the recesses 18, 19

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viewed four, as the soles with these anaparations duroh curved cutouts 18o and 19o connected Bind, the are formed in the wall of the bore 16. The cutouts β 18o extend over the entire! Tiefο or Thickness of the block 10.

In the block 10 recesses 22, 23 and slots 24, 25 (Pig. 6 and 7) are also provided, which to the area 13 of the block are open. These Ausaparungen and slots are identical to the corresponding recesses 18, 19 and slots 20 «21 and are arranged in the block in such a way that it would result in exactly the same view as in FIG. * line running cross tube would be rotated.

Kin first pair of contact strips 27, 28, which with each other are identical, are each received by the recesses 19 and. From Fig. 6 it can be seen that the contact strip 27 has a curved portion 27a extending from the Cutout 19c is received, the inner surface of the curved file lying smoothly and without interruption on the surface of the bore 16 · One end 27b of the contact strip is inserted into the slot 21, whereby the curved part 27a is suitably held · The other end 27c of the contact strip is bent into a U-shaped loop, this end of the strip as a so-called Einsteckklecme works. The contact strip 28 is in the I. Recess 23 fastened in exactly the same way "| like the contact strip 27 in the recess 19

Another pair of contact strips 30, 31 is attached to the block 10, these strips being identical to one another. The contact strip 30 is arranged in the recess 18, wherein a läidat tire 30a die3ea contact strip in the Schiita 20 is inserted, whereby a curved part 30b dea contact strip is held in the cutout 18c so that

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that the inner surface of the former is smooth and all over Surface on over V / and the bore 16 rests, as it is from Pig. 6 to eraehon iat. The strip portion 30b extends aioh over ira essentially the entire height or depth of the Blockoa 10 » The other end 30c of the contact strip is to one U-shaped end bent, this ünde of the strip as a üinateoUiilerame works. The contact strip 31 is of of recess 22 assumed in the same V.'elf »β as it just based on the building of the Kantakt strip 30 in the Recess 18 has been described.

A cylinder 34 of dielectric material is rotatable in the 3obrung 16 arranged. On a jüide of cylinder 34 a recess 35 is formed which has a contact strip 36 in such a way that it is rotatable together with the cylinder 34. The strip 36 has indteile 36a and 36b, which are bent so that they are in resilient Engagement with the bore 16 and parts of the contact strips are held, which will be explained below. The member 34 has at the other or lower .End. one. further recess 37, which is identical to the recess 35, but is rotated by 90 ° with respect to this. This recessed rope takes on a contact strip 38, which is identical to the contact strip 36. The contact strip 38 has end parts 38a and 38b.

The cylinder 34 is shown in Pig * 2 in a neutral position which it only assumes when it is switched back and forth between two positions to be explained below. In one position of the cylinder 34 this is from the in Pig. 2 rotated approximately 45 ° in the position shown in (clockwise so that the contact end 36a is in engagement with the contact strip part 27a and the contact end 36b is in engagement with the contact strip part 30b. When the cylinder 34 is in the same position, the contact end is 33a ia Lin ^ riff with the contact strip part 28a and the contact end 3 <3b is in engagement with the contact strip part 31b

Contact end 36a always remains in engagement with the contact tire portion 27a, and the contact tire part 28a arrives alternately engaged with the contact ends 38a and 38b.

The cylinder 34 is rotated clockwise by approximately 45 ° aua in the position shown in FIG moved to another position. When the cylinder 34 is pivoted into this position, the contact end 36b of the contact end 30b separated and comes with the contact strip part 31b engaged. When the cylinder 34 is rotated to the position, the contact end 38a is therefrom Contact strip part 28a separated and arrives at the same time . then engaged with the contact strip portion 30b when the Contact end 38b separated from contact strip portion 31b and comes into engagement with the contact strip portion 28a.

Per basic structure of the öohalters will continue upper through a] and a lower plate 40 and 41 formed made of a suitable dielectric material and the corresponding surfaces 14 and 15 dea block are fixed, being hereby substantially over their entire surface in Standing touch. These plates can be attached to the block by fasteners in the form of small bolts 43,44 and screws 45,46 associated therewith. Of course, rivets or other suitable fastening means can also be used instead of the bolts and screws just mentioned. The bolts 43, 44 are etched in openings 40a in the plate 40 and in bores 10a, 10b in the block 10 and in openings 41a in the plate 41. The plates 40 and 41 have corresponding circular openings 47, 48 which are aligned with one another and each receive peg-shaped members 49, 50 which are formed in one piece with the cylinder member 34 and protrude in the middle from this whereby the cylinder 34 can be rotatably mounted so that it can be reciprocated between the positions described above. The cylinder 34 has an aua integral with the

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Cylinder formed upright projection 52, which is freely insertable into a curved slot 53 which is formed in the top plate 40. The extension 52 is received in a groove 55a which is formed in one end of an actuation arm3 55. The actuating arm can be fastened pivotably about the bolt 44 between its ends, the bolt being made somewhat longer than the bolt 43 for this purpose. The arm 55 has a widened üide ο 55 through which the slot 53 is covered regardless of the position of the arm; this prevents foreign particles from getting inside the switch.

The cylinder 34 can engage in either of the two above-mentioned positions or is locked with the aid of a ball 57 held resiliently, which is inserted into a blind bore 58 in the cylinder 34, which is best shown in FIG see iöt. A coil spring 59 »which is in the blind hole is arranged, the ball 57 biases upwards so that this alternately to a part in the small bores 60, 61 formed in the top plate 40.

As can be seen from Fig. 1, according to the present Invention formed switches easily attached to a trigger operated switch, generally designated 63 , the latter switch may be of the type shown in US Pat and 3,389,365. One by a trigger actuated switch comprises a body 64 'to which a trigger 65 is movably attached. This with help a trigger operated switch which is designed so that it can be mounted in the housing of a portable electrical device may contain contacts to the Easily energize equipment motor, or such a switch can be a speed control system of the type shown in US Pat. No. 3,209,228 to provide the appliance motor with

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to run at variable speed »According to one preferred embodiment of the present invention the actuating arm 55 has an end 55 b which is above the Trigger 65 and rests against this in order to actuate the member 55 with the aid of the trigger finger of the operator.

In Fig. 8 the reversible electric motor of the device is shown at while the lines from a suitable AC power source are designated 68 and 69. If the Arm 55 is pivoted to one side so that the cylinder 34 is in one of the positions shown, so are the contacts 36, 38 in that shown in Fig. 8, through Solid lines indicated position switched so that the motor 67 is driven in one direction. When the arm is pivoted to the other side of the trigger 65, the cylinder 34 moves into its other position, whereby the contacts 36 and 38 are brought into the position shown in Fig. 8 in dashed lines, so that the motor is driven in its other direction. When the device trigger is actuated, the motor is switched to driven or actuated in the direction of rotation, which is determined by the position of the arm 55.

From the above description it can be seen that the present invention provides a new and improved reversing switch is specified · It goes without saying that the switch according to the invention is not intended to be used together with a by a trigger operated switch, as shown in Fig. 1, is limited, since the switch according to the invention evidently has many other uses. The switch of the present invention is inexpensive to manufacture because it includes a minimum of parts, with many of the parts are equal to each other. Because of the simplicity of construction, the switch can be made extremely small and compact.

Claims (1)

BS3BBBSS3BnS8SSS3SBSS3BBSSSSS 1 # switch, characterized by a base plate (10) to which the first (27, 28) and second (30, 31) pairs of fixed contacts are attached by a member (34) rotatably mounted in this base plate> the first ( 36) and a second (38) movable contact, by means (52, 55) for rotating this member into a first position in which the first and second movable contacts each have a contact of the first contact pair with a contact of the second contact pair connect, and in a second position, in which the first and the second movable contact each connect a contact of the first contact pair ait the other contact of the second contact pair as in the first position, wherein at least the first or the second movable contact has two contact parts that alternately come into contact with different fixed contacts in the first and second position 2 · Switch according to claim 1, characterized in that the base plate has a block (10) which is provided with a bore (16) and has several recesses (18, 19, 22, 23), which are each open towards the bore, that the fixed first and second contacts are each fastened in these recesses, each fixed contact having a cable resting against the wall of the bore, that the member rotatably mounted in the base plate consists of a cylinder (34) arranged in this bore, and that each of the movable contacts has two End parts (36a, 36b, 38a, 38b) each having the on the wall of the bore adjacent parts of the associated fixed contacts are in contact in the first and the second Drehet position of the cylinder. 3. Switch according to claim 2, characterized in that each of the fixed contacts is generally in the form of a Strip has that respective parts of this strip Contact parts (27b, 28b, 30a, 31a) of the first contacts form and that these strips each mutually opposite one another Have ends that form plug-in clerams 4 switch naob spoke 2 or 3, characterized that four recesses are provided, two of which are formed in opposite surfaces of the block are and each of the two recesses lying in a surface has an opening to opposite one another Has sides of the block. 5 × switch according to one of the preceding claims, • in that the mutually opposite faces of the block (14, 15), in which the Ausaparungen are formed, each covered by a substantially using this] surfaces congruent plate (40, 41) is so that the Recesses form essentially closed cavities, in each of which one end of a fixed contact strip is arranged 6. Switch according to one of the preceding claims, characterized characterized in that at least in each case the part of a stationary contact strip lying in a recess is resilient and curved so that this j part of the contact strip with the recess a KLnateck- clamp forms. 7. Switch according to one of the preceding claims, there- characterized in that each plate has an opening (47, 48) \ , which are coaxially aligned with each other, and that formed in these openings at the ends of this cylinder (34) Hubs (49, 50) protrude. i I ♦ 4 * - 12 - 8. Switch according to one of the preceding claims, characterized characterized in that the cylinder has recesses (35, 37) at its opposite ends, in each of which the first or second movable contact (36 or 38) is arranged, and that the one another opposite ends of the first and second movable contacts lie on the outer surface of the cylinder. 9. Switch according to one of the preceding claims, characterized in that the first and the second movable Contact are equal to each other and that the first pair and the second pair of fixed contacts are each other are the same, while the first contacts are different from the second contacts. 10. Switch according to one of the preceding claims in connection with a switch which can be actuated by a trigger, characterized in that this switch can be actuated by a trigger Switch can be attached to a portable device and that this switch has a body on which can be moved a trigger is attachable, that the base plate is attached to this body, that a manually operable Arm is provided, which is connected to the member rotatably mounted in this base plate, around this member between to pivot its first and second position. 11. Switch according to claim 10, characterized in that the arm (55) is pivotally attached to the base plate (10) between the ends of the arm that one end (55b) of the arm with this member (34) is in engagement and that the other The end of the armea is located near the trigger. 12. Switch according to claim 1, characterized in that the other of the first and second movable contacts one Having end portion which is continuously engaged during movement of the link (34) between the first and second positions with one of the fixed contacts.