DE102009033536A1 - Actuating device for actuating electrical unit, has plastic actuating body rotatably locked in recess of housing around rotation axis, where body is lockable using locking element that is lockable in defined rotation position of body - Google Patents

Abstract

The device has a plastic actuating body (5) for actuating an electrical unit (2) and rotatably locked in a recess (6) of a plastic housing around a rotation axis (8), where the electrical unit is arranged in the housing. The body is lockable using a locking element that is lockable into a latching indentation in a defined rotation position of the body. The indentation is arranged in a housing base (9) of the recess. The locking element is formed as a locking lug at a gripping arm, which extends transverse to the rotation axis in proximity to the housing base.

Description

The The invention relates to an actuating device for actuating an electrical device disposed in a housing is and actuated by an actuator is that rotatable about a rotation axis in a recess of the housing is locked.

From the German Utility Model DE 201 16 512 U1 an actuating device for an electric switch with push button is known, which is fastened by means of a carrier which is provided with flexible hooks by latching in a housing. From the German patent application DE 102 07 399 A1 is an electrical rotary switch with a rotor known which is secured by means of locking elements in a receptacle which forms a pivot bearing for the rotor.

task The invention is an actuator according to the To provide preamble of claim 1, which is simple and inexpensive can be produced.

The Task is with an actuator for actuating an electrical device disposed in a housing is and actuated by an actuator is that rotatably locked about a rotation axis in a recess of the housing is, solved by the fact that the actuator with the help of at least one locking element in at least one particular Rotary position of the actuator is latched. The electrical device includes, for example, a read contact or Read contact or Hall sender, which is dirt and / or waterproof housed in the housing. The contact or the Hall sensor of the electrical device interacts with a magnet, which is arranged in the actuator. By the actuator the magnet is movable relative to the contact or Hall sender, to operate the electrical device. By the Locking element according to the invention, the actuator with the magnet in a simple way in a given Rotary position positioned relative to the contact or Hall sender become. The actuator is preferably as a plastic injection molded part executed and in the recess of the housing taken, which is preferably also made of plastic is.

One preferred embodiment of the actuator Is characterized in that the locking element in the specific Rotary position of the actuator engages in a latching recess. By engaging in the detent recess, a switching point in defines the specific rotational position of the actuator become.

One Another preferred embodiment of the actuator is characterized in that the detent recess in a housing bottom the recess is provided. The recess in the housing preferably has the shape of a straight circular cylinder jacket, which is closed by the bottom of the housing bottom.

One Another preferred embodiment of the actuator is characterized in that the latching element as a latching lug a Schnapparm is formed, which is close the housing bottom transverse to the axis of rotation of the actuator extends. The Schnapparm is preferably designed so that the Locking lug biased against the latching element against the housing bottom is. By the bias of the snap-action ensures that that the locking lug in the locking recess in the housing bottom engages as soon as you turn the actuator arranged in the specific rotational position above the locking recess becomes.

One Another preferred embodiment of the actuator is characterized in that the detent recess in a side wall the recess of the housing is provided. The side wall preferably has the shape of a straight circular cylinder jacket.

One Another preferred embodiment of the actuator is characterized in that the latching element as a latching lug a Schnapparm is formed, which is close the side wall of the recess of the housing in the circumferential direction extends. The snap-on arm preferably has essentially the shape a circular arc, formed at one end of the locking lug is.

One Another preferred embodiment of the actuator is characterized in that the latching element is movable back and forth guided in the actuator and by a spring is biased. The latching element preferably comprises a sleeve, which is provided with a rounded tip, in the locking recess locks.

One Another preferred embodiment of the actuator is characterized in that the actuating member at least comprises a receiving space for a magnet, the, related on the axis of rotation of the actuator, off-center is arranged. The magnet preferably acts with a Hall sender or a read contact or read contact together, the is encapsulated in the housing.

Another preferred embodiment play the actuator is characterized in that the magnet cooperates with an electrical element which is arranged in the housing. The electrical element is preferably a switching device which is actuated by rotation of the actuating member.

One Another preferred embodiment of the actuator is characterized in that the electrical element in the Housing is encapsulated. The encapsulation in the housing is preferably not only tight against water, but also tight against Detergents used in hospital hospital wash streets. The encapsulation in the housing is preferably also against other chemical substances, such as disinfectants, resistant.

One Another preferred embodiment of the actuator is characterized in that between the actuator and the housing is arranged at least one seal. The seal prevents a fluid, such as water, from being between the actuator and the housing gets into the recess.

One Another preferred embodiment of the actuator is characterized in that the housing made of plastic is formed. The housing is preferably designed as an injection molded part. The housing is preferably integral with the aid a folding core produced by injection molding.

One Another preferred embodiment of the actuator is characterized in that the actuating member Plastic is formed. The actuator is also preferably designed as injection molded part.

One Another preferred embodiment of the actuator is characterized in that the actuating member at least two Has latching and / or snap hook, the so in recesses engage, which provided in the recess of the housing are that the actuator, at least limited, in the recess of the housing is rotatable. The recesses are preferably of undercuts in the recess of the Housing formed by injection molding can be produced.

One Another preferred embodiment of the actuator is characterized in that the recesses of an annular groove near one or the case bottom are formed. The annular groove preferably runs coaxially around the axis of rotation of the actuator.

One Another preferred embodiment of the actuator is characterized in that the housing bottom in one piece connected to the housing. Alternatively, the case bottom be executed as a separate component, preferably cohesively connected to the side wall.

One Another preferred embodiment of the actuator is characterized in that the recess of the housing has substantially the shape of a straight circular cylinder. The circular cylinder extends coaxially to the axis of rotation of the actuator.

Further Advantages, features and details of the invention will become apparent the following description, with reference to the drawing various embodiments described in detail are. Show it:

1 an actuating device with an actuating member in longitudinal section;

2 a offset by 90 degrees longitudinal section through the actuator 1 ;

3 a similar view as in 2 according to a further embodiment;

4 a section from 3 in the plan view of a latching element;

5 a similar representation as in 4 with a slightly modified latching element;

6 a similar representation as in 3 with a separate housing bottom;

7 a similar representation as in 2 according to a further embodiment;

8th a similar representation as in 3 according to a further embodiment and

9 a section from 2 according to further embodiments with seals.

In 1 is an actuator 1 with one only by a reference numeral 2 indicated electrical device shown in section. The actuator 1 includes a housing 4 with an actuator 5 , The actuator 5 is about a rotation axis 8th rotatable in a recess 6 of the housing 4 added. The recess 6 includes a side wall 7 which has substantially the shape of a straight circular cylinder jacket. The recess 6 is down through a floor 9 closed, which has the shape of a circular disk. The floor 9 is at the in the 1 . 2 . 3 . 7 . 8th and 9 illustrated embodiments in one piece with the side wall 7 connected.

The actuator 5 includes a main body 10 made of plastic, of which there are two snap-in and / or snap hooks 11 . 12 parallel to the side wall 7 to the ground 9 the recess 6 extend. At the free ends of the catch and / or snap hook 11 . 12 is in each case a locking element 13 . 14 formed in a recess 15 . 16 engages near the bottom 9 in the form of an undercut in the side wall 7 is provided. The recesses 15 . 16 are advantageous portions of an annular groove 18 near the bottom 9 , for example by means of a folding core by injection molding, in the side wall 7 is generated. With the help of snap-in and / or snap hooks 11 . 12 can the actuator 5 in a simple manner rotatable in the recess 6 of the housing 4 to be assembled.

In 2 an embodiment is shown in which the actuating member 5 with the help of a locking element 20 in a certain rotational position in the recess 6 of the housing 4 is locked. For this purpose, the locking element 20 a catch 21 on that in the in 2 shown rotational position of the actuator 5 in a detent recess 22 engages in the case back 9 is provided. The catch 21 is on a snap arm 24 of the locking element 20 provided, extending from the main body 5 parallel to the caseback 9 , ie transverse to the axis of rotation 8th , extends. The catch 21 and the detent recess 22 are designed so that the actuator 5 is rotatable against resistance, with the latch 21 from the detent recess 22 solves. Through the Schnapparm 24 is the catch 21 against the case back 9 biased.

In 2 one sees further that the main body 10 of the actuator 5 a recording room 25 for a magnet 26 having. The magnet 26 is so in the recording room 25 picked up that one end face of the magnet 26 at a small distance parallel to the housing bottom 9 the recess 6 is arranged.

In 3 is a similar embodiment as in 2 with an alternative locking element 30 shown with the sidewall 7 the recess 6 cooperates to the actuator 5 in a certain rotational position in the recess 6 to lock. The locking element 30 may alternatively or in addition to the in 2 shown locking element 20 be provided.

In 3 one sees further that the electrical device 2 an electrical element 32 that covers on a circuit board 34 is arranged. At the electrical element 32 it is preferably a read contact or read contact or Hall sender, by the magnet 26 can be activated or actuated. The electrical element 32 is through the case 4 fluid-tight from the environment of the actuator 1 shielded or encapsulated. In the case 4 it is preferably a hospital bed, which is washed in a car wash or a washing machine.

By the encapsulation or shielding of the electrical element 32 in the case 4 An undesirable penetration of water or of washing substances or disinfectants can be reliably prevented. The housing 4 and the actuator 5 are preferably made of plastic by injection molding. In this case, the undercut of the annular groove 18 be generated by a folding core. The folding core can be folded together to demould the injection molded parts. By the shape of the case 4 with the recess 6 manufacturing by injection molding with only one Entformungsrichtung can be realized.

In 4 is a section of 3 in the plan view of a detent 41 shown in a detent recess 42 in the sidewall 7 the recess 6 of the housing 4 intervenes. The catch 41 is at the free end of a snap-in 44 formed, which has the shape of a circular arc, that of the main body 10 of the actuator 5 emanates. Through the Schnapparm 44 is the catch 41 against the side wall 7 biased.

In 5 is a similar embodiment as in 4 with a catch 45 shown in a detent recess 46 intervenes. At the in 5 illustrated embodiment, the locking lug 45 and the detent recess 46 designed sharper than the in 4 illustrated embodiment. By the design of the locking lugs 41 ; 45 in relation to the locking recesses 42 ; 46 may be the force with which the locking element 20 ; 30 engages to be set.

In 6 is a similar embodiment as in 3 shown in which the side wall 7 of the housing 4 through a separate floor 50 is completed. The floor 50 has the shape of a circular disc made of plastic and is, for example by means of spin welding or gluing cohesively with the side wall 7 connected. The separate floor 50 allows a larger undercut in the area of the annular groove 18 as with a folding core.

In 7 is shown that the locking element 20 also a sleeve 51 with a rounded tip 52 may include. The sleeve 51 is by a spring 53 in a blind hole of the actuator 5 is taken up, against the ground 9 preloaded with the detent recess. The sleeve 51 is guided back and forth in the blind hole.

In 8th is shown that the locking element 30 also a sleeve 55 with a rounded tip 56 may include that in the detent recess 56 in the sidewall 7 intervenes. The sleeve 55 is by a spring 57 against the side wall 7 biased. In 9 is indicated in a half section that between the actuator 5 and the housing 4 a seal 61 ; 62 can be arranged, the penetration of dirt or water into the recess 6 of the housing 4 prevented. The seal 61 is received in an annular groove which is in the housing 4 is omitted.

At the seal 61 This is the case, as is the case with poetry 62 , preferably an O-ring. The seal 62 is in an annular groove of the actuator 5 added. The seals 61 . 62 in particular prevent undesirable contamination between the actuator 5 and the housing 4 ,

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 20116512 U1 [0002]
• - DE 10207399 A1 [0002]

Claims (17)

Actuating device for actuating an electrical device ( 2 ) housed in a housing ( 4 ) is arranged and by an actuator ( 5 ) which can be actuated about an axis of rotation ( 8th ) rotatable in a recess ( 6 ) of the housing ( 4 ) is latched, characterized in that the actuating member ( 5 ) by means of at least one latching element ( 20 ; 30 ) in at least one specific rotational position of the actuating member ( 5 ) is latched. Actuating device according to claim 1, characterized in that the latching element ( 20 ; 30 ) in the specific rotational position of the actuator ( 5 ) in a detent recess ( 22 ; 42 ) engages. Actuating device according to claim 2, characterized in that the detent recess ( 22 ) in a housing bottom ( 9 ; 50 ) of the recess is provided. Actuating device according to claim 3, characterized in that the latching element ( 20 ) as a latch ( 21 ) on a snap arm ( 24 ) formed in the vicinity of the housing bottom ( 9 ; 50 ) transverse to the axis of rotation ( 8th ) of the actuator ( 5 ). Actuating device according to claim 4, characterized in that the detent recess ( 42 ) in a side wall ( 7 ) of the recess ( 6 ) of the housing ( 4 ) is provided. Actuating device according to claim 5, characterized in that the latching element ( 30 ) as a latch ( 41 ) on a snap arm ( 44 ), which is located near the side wall ( 7 ) of the recess ( 6 ) of the housing ( 4 ) extends in the circumferential direction. Actuating device according to claim 3 or 5, characterized in that the latching element ( 20 ; 30 ) movable in the actuator ( 5 ) and by a spring ( 52 ; 57 ) is biased. Actuating device according to one of the preceding claims, characterized in that the actuating member ( 5 ) at least one recording room ( 25 ) for a magnet ( 26 ), which, based on the axis of rotation ( 8th ) of the actuator ( 5 ), is arranged off-center. Actuating device according to claim 8, characterized in that the magnet ( 26 ) with an electrical element ( 32 ) cooperating in the housing ( 4 ) is arranged. Actuating device according to claim 9, characterized in that the electrical element ( 32 ) in the housing ( 4 ) is encapsulated. Actuating device according to one of the preceding claims, characterized in that between the actuating member ( 5 ) and the housing ( 4 ) at least one seal ( 61 ; 62 ) is arranged. Actuating device according to one of the preceding claims, characterized in that the housing ( 4 ) is made of plastic. Actuating device according to one of the preceding claims, characterized in that the actuating member ( 5 ) is made of plastic. Actuating device according to one of the preceding claims, characterized in that the actuating member ( 5 ) at least two latching and / or snap hooks ( 11 . 12 ), which in so in recesses ( 15 . 16 ) engage in the recess ( 6 ) of the housing ( 4 ) are provided, that the actuating member ( 5 ), at least limited, in the recess ( 6 ) of the housing ( 4 ) is rotatable. Actuating device according to claim 14, characterized in that the latching recesses ( 15 . 16 ) of an annular groove ( 18 ) in the vicinity of one or the housing bottom ( 9 ) are formed. Actuating device according to claim 15, that the housing bottom ( 9 ) integral with the housing ( 4 ) connected is. Actuating device according to one of the preceding claims, characterized in that the recess ( 6 ) of the housing ( 4 ) has substantially the shape of a straight circular cylinder.

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