DE1142931B - Multipole connector with push button switch - Google Patents

Description

INTERNAT. KL. H 02 g

GERMAN

PATENT OFFICE

B 44760 VIIId / 21 c

REGISTRATION DATE: MAY 25, 1957

NOTICE THE REGISTRATION AND ISSUE OF EDITORIAL: JANUARY 31, 1963

There are only two-pin plug with a switch known to portable devices, in particular Small devices that do not have a switch can also be switched off without the plug with the flexible cable out of the wall socket. But it turned out that Plugs with more than two poles that can be switched off are also required.

It is also known to incorporate a push-button switch in two-pole plugs and also one Use the release button to reach the disconnected position of the plug again. So is a double plug became known with a bridge switch, in which a lever designed as a contact bridge is actuated by means of an on and off push button, the actuation in the plugging direction he follows.

Finally, there is a multi-pin connector with separate housing parts for mechanical switching parts, electrical switching parts and electrical connection parts have been proposed with in a cup-shaped Housing built-in push-button switch provided with a switch-on and a release button, which can be actuated in the plug-in direction, with a vertical one that can be actuated by pressing the release button acting in the direction of pressure, spring-loaded, by means of an inclined surface forming a recess in the lower part of the release button can be displaced from a detent position when the power button is switched on Latching device for the switch-on button, with the switch-on and release button in a switch-off position pressing compression springs, which can be actuated by the switch-on button, are attached to the connector pins fixed mating contacts interacting contacts.

However, this solution has the disadvantage that with such a connector with three or more connector pins in particular a lot of space with regard to the arrangement of the fixed and movable contacts is needed. In addition, the expense of a special, arranged in addition to a spring member Locking member for locking the switch-on pushbutton is very expensive. Furthermore is the shape of the power button is very complicated, making it difficult to manufacture.

In the construction of a disconnectable plug with three or more plug pins, however, particular care must be taken that the outer dimensions of the plug do not, or not significantly, exceed the size of a conventional multi-pole plug. In particular, the standard dimensions must be left within the prescribed limits. In the case of the multi-pin connector
with push button switch

Applicant:

Busch-Jaeger Dürener Metallwerke
Aktiengesellschaft, Lüdenscheid

Werner Schmalenbach and Alfred Eppinger.

Ludenscheid,
have been named as inventors

education ζ. B. a disconnectable five-pin plug therefore had to be completely new ways, so that a safe and even switching of the contacts with the smallest space requirement of the whole Connector is guaranteed and the handiness of the outer shape is retained. In the end the plug must not become too expensive, as it is an expensive device even without a switch.

The invention now relates to a multi-pole plug of the already proposed ones described above Art.

The invention consists in that around the power button, which is conical at the lower end in a manner known per se, the contacts designed as contact springs are distributed radially and when pressed in of the power button can be pressed radially against the mating contacts and that the latching device consists of a locking spring that engages laterally in a notch in the power button.

In a push button switch for telephone systems, the radial arrangement of contact springs is around a push button has already become known, which also when pressing the On button the contact springs can be pressed radially against mating contacts.

In a disconnectable plug according to the invention, the locking spring is expediently formed as transverse A hairpin spring that runs to the push-button movement and has a straight end and a terminating one middle part bent around the power button and another part designed as a coil End off, being in one for leadership

305 507/290

1 142 S31

the on / off button serving insert body by a known counterpressure process on the lower side of the insert body a central recess and on the upper side of the Insert body two located on either side of the power button and on the line connecting the two buttons Recesses are provided through the resulting slots as a result of this process with each other are connected and the two ends of the locking spring each through one of the slots, thereby through Rests on a paragraph of the recesses held, are guided.

Counter-pressing processes are known to be carried out so that two recesses are produced in the pressing direction be connected to one another by a slot in such a way that there is no sideshift for the slot is required.

Characterized in that the locking device consists exclusively of a locking spring, which in particular is hairpin-shaped is formed and engages in a notch of the power button, is used for the locking device very little space required. According to the invention it is possible to use the locking spring in the area of the To store power button distributed radially arranged contact springs and interact with the power button allow.

A special feature of the plug according to the invention is that the switch-on and release button, the contact springs with terminals and the locking spring are arranged in the insert body and form a built-in unit with it.

Another feature is that on the insert body a bracket to support the two Compression springs are attached so that the bracket is designed in a manner known per se as a protective contact conductor and is provided with a ground conductor terminal that the bracket for an extension of the power button as Stop is used and that the bracket has a grounding pin penetrating the housing base.

The formation of a bracket as a protective contact conductor with the arrangement of an earth conductor terminal is has already been used frequently in known protective contact plugs.

Due to the arrangement of all movable, mechanical and electrical switching elements in the Insert body as well as the support of the compression spring which brings about the return of the push buttons a very good and simple assembly achieved, which is very important for economical production and safe functionality of the disconnectable plug.

The power button has a lateral, a rotation of the power button about its longitudinal axis preventive cam on.

Another special feature is that when a zero contact spring is arranged in the disconnectable plug the power button on its cone in the area of the zero contact spring one at Switch on the zero contact spring earlier than the other contact springs against the corresponding mating contact pressing and when switching off a later exit from the zero contact spring of yours Opposite contact guaranteeing elevation possesses.

This option is particularly required by various test centers for four-pole switches. This requirement is important if the zero contact is also an earth contact and must have a lead or lag compared to the phase contacts.

Furthermore, the release button is in its lower part, securing the release button against twisting, designed square, and the square also serves as a stop in a hole in the insert body, whereby a secure holding of the release button in the insert body is guaranteed.

Finally, another feature is that chambers are accommodated in the bottom of the housing are in which the mating contacts are stored.

In the drawings, the connector according to the invention is shown in several figures.

1 shows a longitudinal section through the entire disconnectable plug in the open switch position;

Fig. 2 is a section on the line II-II of Fig. 4;

Fig. 3 shows a plan view of the lower connector housing with the insert removed;

Fig. 4 is a plan view of the open connector housing with the insert inserted;

Fig. 5 is a bottom plan view of the disconnectable connector from the pin side;

Figure 6 is a bottom plan view of the insert;

Fig. 7 is a partial section from FIG. 6 along the line III-I1I through the release button, the dashed Position indicates the switch-off position;

Fig. 8 is a section through the power button;

9 and 10 show the detent spring once disengaged and once in the locked state.

The switch consists of the cup-shaped housing 1 and the cover 2 as well as the insert body 3. The four pole contact pins 4, 5, 6 and 7 are pressed into the cup-shaped housing. They are connected to the stationary mating contacts 4 a, Sa, 6 a and la , which are arranged in niches or in chambers la Ib, lc and ld of the housing bottom. The pins are pressed or inserted into the housing and riveted to the contacts. The housing base has an opening Ie through which the grounding pin 8 penetrates when the insert body 3 is inserted into the housing. The grounding pin 8 is combined with the bracket 9, which is also the grounding bracket. The grounding bracket carries the grounding terminal 9 b on a U-shaped angled leg 9 a and engages around the insert body 3 laterally with its U-part 9 α. The two compression springs 10 and 13 are supported on the grounding bracket 9, the spring 10 pressing the switch-on button 11 upwards into the switch-off position when the locking spring 12 is disengaged. The other spring 13 keeps the release button 14 always in the starting position, the button 14 with its square 14 α on the upper wall 3 / the recess 3 b of the insert body 3 comes to a stop. The downward movement of the release button 14 is limited by the locking spring 12, which is supported on the two paragraphs 3 c and 3 d of the insert body. The insert body 3 is placed on a protruding edge 1 / of the connector housing.

The insert body 3 consists of insulating material in which the terminals 15, 16, 17 and 18 are arranged on the upper end face. With these terminals in recesses 15α, 16α, Πα and 18α contact springs 19, 20, 21 and 22 are connected, which penetrate the insert body in openings 3e, 3 /, 3 g, 3 Λ and with their lower ends over the

Contact rivets with the stationary mating contacts Aa, 5 a, 6 a, la come into contact.

The insert body includes in its lower end face nor the sinker 3 a in which the locking spring 12 is inserted and is located in the well, the conical portion 11a of the Einschaltknopfes. 11 The power button 11 has a notch 11b into which the locking spring 12 engages with its curved central part 12 a in the locked position of the power button 11 in the on position. The locking spring 12 has a winding end part 12 b with which it rests on the paragraphs 3 c and 3 t / of the insert body 3 just like with the other, however, elongated end part 12 c. When it is inserted, it is pushed through the slots 3 / and 3 k, which are created laterally in the insert body by counter-pressing. The end of the winding 12b is inserted in the insert body 3 in such a way that the free leg 12 d of the latter rests against the side wall 3 m of the recess 3 η of the insert body 3, whereby the middle part 12 α of the spring is pressed against the switch button 11. The power button 11 also has a cam lic. The cam is guided in a vertical groove in the insert body 3 in order to prevent the switch button 11 from rotating about its longitudinal axis. On its lower side, the power button 11 is provided with a groove 11 d in which the compression spring 10 engages in stock. At the end of the switch-on button 11, a pin He is attached, which may come to the stop with an extension against the bracket 9 and thereby prevents the button 11 from being pushed through downwards. The power button 11 is arranged in the middle of the insert body 3 and the four contact springs 19, 20, 21 and 22 surround it at the same distance. As a result, the cone 11a can be made circular and the contact springs can press evenly against the mating contacts when switched on. In order to give the zero pole a lead in a four-pole switch when switched on and a lag compared to the three phase contacts when switched off, the cone 11 a of the switch button 11 in the area of the relevant contact spring 20 is provided with an elevation 11 /, which the spring 20 earlier against the mating contact la presses or later leaves the same when switching off.

The switch-on movement takes place in the direction of the connector pins, i.e. downwards according to the drawing. Here, the conical part 11a of the power button 11 presses against the spring deflection of the contact springs 19, 20, 21 and 22 and then presses them against the mating contacts Aa, 5a, 6a and la perpendicular to the direction of the connector pins. If the switch-on button 11 is pressed far enough down, the locking spring 12 automatically jumps into the locking notch 11 b of the button. The button is then held in this position.

If the plug is to assume the switched-off position again, the release button 14 is pressed, which has a lateral recess 14 b in which an inclined plane 14 c is present. The inclined plane acts on the end 12 c of the locking spring 12 mounted in the recess 14 b when the button 14 is pressed down and pushes it sideways. Here, the middle part 12 a of the locking spring 12 is urged in the direction of the arrow (FIG. 10), that is, outwards, so that the compression spring 10 can easily move the switch button 11 upwards.

The springs 19, 20, 21 and 22 move away from their mating contacts Aa, 5 a, 6 a and la and assume the off position. The locking spring 12 is held in the pushed-off position by the shaft of the switch-on button 11 . After the pressure from above on the release button 14 has subsided, the compression spring 13 presses from below again on the square 14 a of the button and presses it up again, where it comes to a stop against the insert body 3.

Housing lower part 1 and insert body 1 are firmly connected to one another by hollow rivets 23 and 24. The fastening screws 25 and 26 penetrate the hollow rivets 23, 24 from below and engage in the cover 2, which is thereby held on the housing 1. In the cover 2 there is a recess 2a on the upper end face, by means of which a collar is formed which protects the snap fasteners 11 and 14 against breaking when falling and other damage.

The insertion opening 27 is also contained in the dividing plane of the cover 2 and housing 1, and before that, the strain relief clamp 28 is attached to the lower housing part 1.

Claims (8)

Claims 1.Multipolar plug with at least three plug pins with a push-button switch built into a pot-shaped housing, provided with a switch-on button and a release button, which can be actuated in the plug-in direction, with a spring-loaded recess that can be actuated by pressing the release button and acts perpendicular to the direction of pressure forming inclined surface in the lower part of the release button from a detent position when the power button is switched on, sliding locking device for the power button, with the power and release buttons in a switch-off position pressing springs, actuated by the power button, with counter-contacts fixedly arranged on the pins interacting contacts, characterized in, that around the on-button (11), which is conically formed at the lower end, in a manner known per se, the contacts formed as contact springs (19 to 22) are distributed radially and when the on-button (11) is pressed in radially against the Ge gene contacts (4α to la) can be pressed and that the locking device consists of a locking spring (12) which engages laterally in a notch (11b) of the power button. 2. Plug according to claim 1, characterized in that the locking spring (12) as a hairpin spring extending transversely to the push button movement with a straight end (12 c), an adjoining central part (12 a) bent around the power button (11) and another formed as a winding end (12 b) is that in an insert body (3) serving to guide the on (11) and release button (14) by a known counterpressing process on the lower side of the insert body (3) a central countersink ( 3 α) and on the upper side of the insert body (3) two recesses (3 ri) are provided on both sides of the switch-on button (11) and on the connecting line of the two buttons (11, 14), which are provided through slots (3 /, 3 k) are connected to each other and that the two ends (1 2 b, 12 c) of the locking spring (12) each through one of the slots (3 /, 3 k), thereby resting on a shoulder (3c, 3d) of the recesses (3 / j) held, led. 3. Plug according to claim 1 and 2, characterized in that the switch-on and release button (11 and 14), the contact springs (19 to 22) with terminals (15 to 18) and the locking spring (12) are arranged in the insert body (3) and form an installation unit with it. 4. Plug according to claim 1 to 3, characterized in that a bracket (9) for supporting the two compression springs (10 and 13) is attached to the insert body (3), that the bracket (9) in a known manner as a protective contact conductor designed and provided with a ground conductor terminal (9 b) that the bracket (9) serves as a stop for an extension (Ue) of the power button (11) and that the bracket (9) has a grounding pin (8) penetrating the housing base. 5. Plug according to claim 1 to 4, characterized in that the power button (11) has a lateral cam (lic) preventing rotation of the on / off button (11) around its longitudinal axis having. 6. Connector according to claim 1 to 5 with a zero contact spring, characterized in that the switch-on button (11) on its cone in the area of the zero contact spring (20) one when switching on the zero contact spring (20) earlier than the other contact springs (19, 21, 22) against the corresponding counter-contact pressing and when switching off a later exit from the zero contact spring (20) has elevation (11 /) guaranteeing its counter contact. 7. Plug according to claim 1 to 6, characterized in that the release button (14) in its lower part, the release button (14) securing against rotation, is designed square and that the square (14 a) at the same time as a stop in a bore ( 3 /) of the insert body (3), ensuring that the release button (14) is securely held in the insert body (3). 8. Plug according to claim 1 to 7, characterized in that in the bottom of the housing (1) chambers (la to Id) are housed, in which the mating contacts (19 to 22) are mounted. Considered publications:
German patent specifications No. 477 687, 222 227:
German utility model No. 1 742 864.
689, 1699 018;
French patent specification No. 974 838. Legacy Patents Considered:
German Patent No. 1 029 903. 1 sheet of drawings © 309 507: 290 1.63