DE10101608B4 - actuator - Google Patents

Abstract

actuator (1) with a housing (2), the at least one electric motor (3), a reduction gear (4) and a circuit board (5) receives, via baffles (16) with the Electric motor (3) is electrically connected, characterized in that the electric motor (3) is provided with a retaining ring (15) in the housing (2) is held and that the baffles (16) the respective contact points Have recesses, so-called contact means (17a, 17b), such, that spring tongues protrude into the recesses, which are piercing the Bend contacts and cling to the insertion process, and this contact means on the one hand with contact pins (12) in the Printed circuit board (5) are pressed, and on the other hand with motor contacts (13) are in communication with the spring tongues (18a, 18b) ensure electrical contact and hold the contact pins (12) and motor contacts (13), and that the retaining ring (15) includes stiffening ribs, wherein at least a part the stiffening ribs serves as a fixation of the guide plates (16).

Description

The The invention relates to an actuator, with a housing, the at least one electric motor, a reduction gear and a PCB picks up over Baffles electrically connected to the electric motor.

Out WO 00/68556 A1 is a throttle valve drive consisting of an electric motor and a reduction gear known, the comprises: an element which performs the function of a printed circuit board, because there is an electrically conductive connection between the terminals of the electric motor and the plug to the vehicle electrical system manufactures, this Element is over Baffles electrically connected to the electric motor, which baffles Having contact means, the electric motor is with an element, that in its function corresponds to a retaining ring held in the housing, the baffles are for contacting the corresponding one PCB Elements with the electric motor with contact pins and on the other hand with motor contacts in connection and the baffles have contact means, which ensure the electrical contact and hold the pins and motor contacts. A disadvantage of this execution is that it is only for high quantities and correspondingly high investment costs can be used economically is.

From the DE 41 26 118 A1 is a latching connection between a motor pot and a transmission housing known, the joining process between the motor housing and the transmission housing can be done easy to install via a snap connection.

The DE 299 01 516 U1 describes a throttle valve drive in which an electrical connection between an electric motor and a printed circuit board via tabs.

A terminal device with resilient tongues in a baffle is from the DE 197 30 603 A1 known.

at another known actuator of this type is the contacting between motor and circuit board over Baffles that are soldered to the motor and to the circuit board or welded are. For the safe contact of the connections is therefore an additional Work required.

task The invention is therefore to provide an actuator which Compact and easy to assemble, with a high level of reliability through a non-releasable Connection of the electrical connections is ensured.

This object is achieved in that the electric motor ( 3 ) with a retaining ring ( 15 ) in the housing ( 2 ) and that the baffles have recesses at the respective contact points, so-called contact means ( 17a . 17b ), such that spring plates protrude into the recesses, which bend when piercing the contacts and cling to the insertion process, and these contact means on the one hand with contact pins ( 12 ), which are in the circuit board ( 5 ) and on the other hand with motor contacts ( 13 ), wherein the spring tongues ( 18a . 18b ) ensure the electrical contact and the contact pins ( 12 ) and motor contacts ( 13 ), and that the retaining ring ( 15 ) Stiffening ribs, wherein at least a part of the stiffening ribs as a fixation of the baffles ( 16 ) serves.

The Supply of the electric motor of an actuator is advantageously carried out via a printed circuit board, on it not only tracks, but also electrical components can be placed. The electrical connections are mostly via baffles realized that soldered to contact points of the circuit board or welded are: The need to Baffles are soldered in the already assembled state in the housing. An automation of the soldering process is usually expensive. The features of the above invention have the advantage that only one soldering process is necessary and that the soldering process freely accessible and outside of the housing can take place, since only the PCB has to be soldered. This can also be done nor the advantages of automatic soldering such as Schwallbad- or reflow soldering be used.

Of the soldering is only for the contact of the pins with the circuit board needed. All other contacts are realized by plug connections. The electrical connection of the printed circuit board with the motor takes place, as before, over Baffles. These have at the respective contact points recesses, so-called contact means, which are located at the ends of the baffles, in such a way that spring tongues protrude into the recess, which at the piercing the contacts bend and cling to the insertion process. The so resulting compound has good contact properties and a good stop.

The motor is guided in a cylindrical recess (motor pocket) in the housing of the actuator and secured there with a retaining ring. The retaining ring has stiffening ribs on the one hand for their own stability, but also on the other hand serve to fix the baffles. The retaining ring is snapped by a locking connection in the housing. Stiff spring elements on the retaining ring push the electric motor into the engine pocket. The spring elements compensate for the tolerances of the motor dimensions. Protruding between the stiffening ribs the motor contacts, which are designed as stable flat contacts, in the housing space.

to Contacting the motor with the circuit board will be the first Baffles with the contact means via the motor contacts of the motor pressed. The bent up spring tongues thereby cling to the motor contacts firm and secure the electrical contact. The other ends of the baffles are coming on the caseback above recesses to lie. The PCB will now proceed with its pins into the housing guided. The contact pins are in the free contact means of the baffles pressed. Again, the Federblechzungen provide the contact means for a electrical connection and the necessary Stop. The circuit board is locked in hollow cylindrical snap locks and held there by the fact that pins are in the housing cover, when closing the housing grab in the hollow cylindrical snap locks and lock the snap mechanism.

The above-mentioned combination of contact pins and motor contacts simplifies the manufacture and assembly of the electrical connection between the supply and the electric motor, since only uses simple components and simple assembly steps are necessary.

The Invention is based on embodiments further explained. Reference is made to the drawing.

It demonstrate:

1 a spatial view of an open actuator housing. An associated circuit board and associated baffles are shown prior to assembly,

2 the housing according to 1 in a view from above with a motor bag and

3 an exploded view of the actuator according to 1 ,

In 1 . 2 and 3 is a housing with 2 designated. 3 shows the case 2 that to an actuator 1 belongs. Other components of the actuator 1 include an electric motor 3 , a reduction gear 4 and a circuit board 5 ,

In 2 is in the case 2 to see a cylindrical recess, hereinafter referred to as a motor bag 14 is called and the electric motor 3 receives. In the engine bag 14 becomes the electric motor 3 used and with a retaining ring 15 detained as in 1 easy to recognize. The retaining ring 15 is provided with stiffening ribs. He also has depressions for embedding baffles 16 for the contacting of the electric motor 3 are provided. For fixing the electric motor 3 is the retaining ring 15 in the case 2 engaged. The motor contacts 13 of the electric motor 3 protrude through the spaces between the retaining ring 15 in the housing interior.

1 shows the circuit board 5 , in the pins 12 pressed in and soldered. In the illustration, the contact pins protrude 12 downward.

The electrical connection between the circuit board 5 and the electric motor 3 is via baffles 16 realized. In 1 the principle of contacting is shown. The baffles 16 have round contact means at their ends 17a and rectangular contact means 17b , in the one hand, the contact pins 12 and on the other hand the motor contacts 13 be pressed. The contact means 17a . 17b have small spring tongue 18a . 18b on, which are directed in the middle of the recess. They are slightly bent and spread after the contacts have been pressed in 12 and 13 on. Their spring action ensures good contact and firm hold.

1

actuator

2

casing

3

electric motor

4

Reduction gear

5

circuit board

6

plug shaft

7

flat contact

12

pin

13

motor Contact

14

motor pocket

15

retaining ring

16

baffle

17a, 17b

contact means

18a, 18b

Spring plate tongue

21

housing cover

22

return spring

23

lever

24

gear shaft

25

pinion

Claims (5)

Actuator ( 1 ) with a housing ( 2 ), the at least one electric motor ( 3 ), a reduction gear ( 4 ) and a printed circuit board ( 5 ), which has baffles ( 16 ) with the electric motor ( 3 ) is electrically connected, characterized in that the electric motor ( 3 ) with a retaining ring ( 15 ) in the housing ( 2 ) and that the baffles ( 16 ) have recesses in the respective contact points, so-called contact means ( 17a . 17b ), derge stating that spring plates protrude into the recesses, which bend when piercing the contacts and cling to the insertion process, and these contact means on the one hand with contact pins ( 12 ), which are in the circuit board ( 5 ) and on the other hand with motor contacts ( 13 ), wherein the spring tongues ( 18a . 18b ) ensure the electrical contact and the contact pins ( 12 ) and motor contacts ( 13 ), and that the retaining ring ( 15 ) Stiffening ribs, wherein at least a part of the stiffening ribs as a fixation of the baffles ( 16 ) serves. Actuator ( 1 ) according to claim 1, characterized in that the retaining ring ( 15 ) in a latching connection with the housing ( 2 ) stands. Actuator ( 1 ) according to claim 1, characterized in that the retaining ring ( 15 ) has stiff spring elements which the electric motor ( 3 ) into the housing ( 2 ) to press. Actuator ( 1 ) according to claim 1, characterized in that the contact pins ( 12 ) in addition to the printed circuit board ( 5 ), are soldered. Actuator ( 1 ) according to at least one of the above claims, characterized in that the printed circuit board ( 5 ) is held via recesses in hollow cylindrical with provided at its outer edge with snap-receptacles, which with a first housing half ( 2 ) are integral, wherein in the hollow cylindrical receptacles cylindrical pins which are integral with a second housing part, engage and lock the latching hook.