WO2018015078A1

WO2018015078A1 - Operating apparatus with active haptic feedback generation and a vibration damper

Info

Publication number: WO2018015078A1
Application number: PCT/EP2017/064596
Authority: WO
Inventors: Frederik Püschel; Tobias Bodenstein; Alain Dani
Original assignee: Preh Gmbh
Priority date: 2016-07-18
Filing date: 2017-06-14
Publication date: 2018-01-25
Also published as: DE102017107366A1

Abstract

The invention relates to an operating apparatus (1) having: a housing (2); an actuation part (6) which defines an actuation surface (6a) and is assigned a sensor unit which comprises one or more sensors (9) and is intended to sense contact and/or a compressive force on the actuation surface (6a); mounting means (20) which are used to mount the actuation part (6) in a movable manner on the housing (2) from a position of rest; restoring means (20) for elastically restoring the actuation part (6) to the position of rest; an actuator (3) for driving the actuation part (6) in a moving manner in order to generate haptic feedback; fastening means (10) in order to secure the actuator (3) to the housing (2), wherein the mounting means (20) and/or the restoring means (20) and/or the fastening means (10) comprise an elastomer component (4) such as a rubber component.

Description

Operating device with active haptic feedback generation and

vibration

The invention relates to an operating device, in particular for a motor vehicle. The operating device has an actuating part, which has a

Actuating surface defined, which is associated with one or more sensors for sensing a touch and / or a compressive force on the actuating surface. For example, it is a touchpad or a touchscreen or generally a disk with a sensor array comprising a plurality of sensors for sensing a touch and / or a pressure force. To operate the operating device, a user must press the operating part with a finger. In this case, it is provided that an actuator drives the actuating part in a moving manner, so that the actuating part executes a deflection movement to be felt with the finger from an initial position or rest position, whereby a haptic feedback for the operator is generated on the actuating part, which is briefly described as active Haptic feedback is called.

An operating device of the type described is known for example from US 2005/0225539 AI. Thereafter, a touch screen is resiliently mounted and is shaken to generate the haptic feedback by means of a motor. The operating part thus performs a periodic, damped oscillation.

From DE 103 15 841 AI an operating device with haptic feedback is also known.

DE 10 2005 048 230 A1 discloses a touchscreen that is moved to generate a haptic feedback in the operating plane of the touch screen. Here is a shaking movement with several

Vibration periods provided.

From DE 10 2009 034 871 AI an operating system for detecting

User input in a motor vehicle with haptic control feedback known. The feedback is a vibration with continuously increasing frequency but constant vibration amplitude.

l In DE 10 2007 005 889 AI a control unit for a motor vehicle is described in which a haptic feedback by a

electromagnetic, electrostatic or piezoelectric actuator is generated. Here, a touch screen is put into a periodic oscillation with a frequency of 100 Hertz to 400 Hertz.

DE 10 2013 016 491 AI discloses an operating device with touch screen in which it should be avoided that the touch screen in a plurality

Vibration periods persistent vibration is added. In order to prevent this, in the case of this operating device, the deflection movement is controlled by a control device by means of the excitation signal. The

Auslenkksignal is in this case designed in such a way that a predominant part of the pulse energy in a first half-wave of the deflection movement on the

Actuating part and / or the finger of the operator is transmitted.

All these solutions have in common an insufficient one

Vibration decoupling between the actuating part and the housing or between the actuator and the housing.

In view of the prior art presented, the development of an operating device with active haptic feedback generation still offers room for improvement.

The invention is therefore based on the object, an operating device with active haptic feedback generation to provide, which is taken care of in a better, vibration control decoupling.

According to the invention the object is achieved by an operating device with the

Characteristics of claim 1 solved. An equally advantageous use of the independent claim. It should be noted that the features listed in the following description as well as measures in any technically meaningful way can be combined with each other and show other embodiments of the invention. The description additionally characterizes and specifies the invention, in particular in connection with the figures. The operating device according to the invention has a housing and an actuating part which defines an actuating surface and which is associated with one or more sensors for sensing a touch and / or a pressure force on the actuating surface. For example, there are a plurality of sensors arranged in a matrix, such as capacitive sensors, for

spatially resolving touch detection and / or a force sensor for detecting the pressure force caused by the actuation, such as a capacitive one

Force sensor.

Furthermore, storage means, by means of which the actuating part of a

Rest position is movably mounted on the housing, provided. There are

According to the invention further reset means for elastic recovery of

Operating part in the rest position, for example sheets of spring steel provided. According to the invention, an actuator is further provided to move the actuating member to produce a haptic feedback

drive. Preferably, the actuating part is driven linearly. Preferably, the actuator is an electromotive or electromagnetic actuator.

For example, the actuator on a coil which is rigidly connected to the housing and an armature which is rigidly connected to the actuating part.

According to the invention, the operating device has fastening means for fixing the actuator, at least parts thereof, such as the coil, to the housing.

According to the invention, the storage means and / or the return means and / or the fastening means comprises an elastomer component, such as a

Rubber component on. This causes a vibration decoupling between the actuating part and the housing and / or actuator and housing. In particular, a generation of unwanted noise emitted by the housing as structure-borne sound is prevented and / or the generation and improvement of the haptic feedback is improved.

Preferably, the elastomer component is rotationally symmetrical.

Preferably, the elastomer component is formed substantially as a sleeve. Preferably, the sleeve defines an opening for a positive or non-positive connection, in particular for a screw connection, for example, to set the actuator on the housing.

Preferably, the elastomer component is used in an opening of the housing, for example, pressed or fixed by positive and / or non-positive connection to the housing. For example, the sleeve has a terminal projection or at both ends of a projection which are formed so that they the sleeve in the housing breakthrough or a

Determine housing recess.

Preferably, the elastomer component is formed in several parts. Preferably, the elastomeric component is defined by a mat and a sleeve, which are arranged adjacent to each other.

Preferably, the fastening means comprise the elastomer component and this is arranged at least partially between the actuator and the housing. For example, the formed as a mat or having a mat

Elastomer component disposed between the actuator and the housing. For example, the mat defines a bearing surface for the actuator and preferably extends over the full area between the housing and the actuator.

According to a further preferred embodiment, the

Elastomer component on an inner part and an outer part, for example, an inner sleeve and an outer sleeve. Preferably, the inner differs from the outer part in the elasticity. For example, the outer part has a higher elasticity than the inner part. For example, the inner and the outer part are positively connected. Preferably, the inner part and outer part are positively, for example, by a toothing with each other

connected.

Preferably, the actuator is designed to drive the actuating part parallel to the plane spanned by the actuating surface.

Preferably, the restoring means comprise a plurality of substantially U-shaped spring steel sheets and the elastomer component is in each case the U-shaped Curvature of the spring steel sheets arranged completely or partially filling. For example, the elastomer component has a wedge-shaped form.

The invention further relates to the use of the operating device in one of the previously described embodiments in a motor vehicle.

The invention and the technical environment will be explained in more detail with reference to FIGS. It should be noted that the figures show a particularly preferred embodiment of the invention, but this is not limited thereto. They show schematically:

Fig. 1 is a schematic sectional view of an inventive

Embodiment of the operating device;

FIG. 2 shows a first embodiment of an elastomer component used as part of the fastening means; FIG.

3 shows a second embodiment of an elastomer component used as part of the fastening means;

4 shows a third embodiment of an elastomer component used as part of the fastening means;

5 shows a fourth embodiment of an elastomer component used as part of the fastening means;

Fig. 6 shows a fifth embodiment of an elastomeric component used as part of the fastening means;

FIG. 7 shows the actuator with the third embodiment of the elastomer component; FIG.

8 shows an embodiment of a part of the storage means or

Restoring medium used elastomer component; 9 shows a further embodiment of a part of the storage means or

Resetting agent used elastomer component.

The operating device 1 according to the invention comprises an actuating part 6, which is movable on a housing 2 with the storage means 20, which also as

Resetting agent act and act in the rest position shown in Figure 1 restoring stored. The operating part 6 defines an actuating surface 6a. For example, the actuating part 6 is a touchpad or a touchscreen with associated sensors for touch detection. Both

Bearing means or restoring mittein is, inter alia, U-shaped leaf springs 20 made of spring steel, both a movement of the actuating part 6 in the direction parallel to the actuating surface 6a and a deflection of the actuating member 6 in the actuating surface 6a

allow vertical direction. This last from the action of a

Operating force resulting displacement is detected for example by a force sensor 9, here a capacitive force sensor. Upon detection of the exceeding of a predetermined actuation force, the actuating part 6 is set in motion by means of an actuator 3, in this case an electromagnetic actuator, in oscillation to impart a haptic feedback to the operator, not shown here, by manual actuation. The excitation by the actuator 3 comes about by electromagnetic interaction of the field generated by a coil of the actuator 3 with an actuation part-side armature 11 and causes a substantially parallel to the actuating surface 6a directed displacement of the operating part 6. The armature 3 is by means of fastening means 10 on the housing 2 attached. The storage means 20 and the return means and the fastening means 10 have in the illustrated embodiment of the invention the operating device 1 on an elastomer component.

Different elastomer components according to the invention assigned to the fastening means 10 are shown in FIGS. 2 to 7 described below.

In the case of the first embodiment of the fastening means 10 shown in FIG. 2, the elastomer component 4 is a one-piece sleeve with lateral projections 4a and 4b which is inserted into an aperture of the housing 2, here an aperture or a recess of a printed circuit board belonging to the housing 2. Through the central breakthrough of the elastomer component 4, a screw from the nut 5b and the screw 5a is guided, which determines the actuator 3, here a belonging to the actuator 3 punching package, with respect to the housing 2, without causing an immediate contact of the actuator 3 with the housing 2 comes. Because of this and the arrangement of

Elastomer component 4 between the actuator 3 and the housing 2, there is a vibrational decoupling between the actuator 3 and housing 2. The second embodiment shown in Figure 3, does not differ significantly from the first embodiment shown in Figure 1. Here, the elastomer component 4 is also a one-piece sleeve with lateral

Projections 4a and 4b in an opening of the housing 2, here a breakthrough of a housing 2 associated circuit board is used. Through the central breakthrough of the elastomer component 4 is also, but in the reverse insertion a screw from the nut 5b and the screw 5a out, which determines the actuator 3, here a belonging to the actuator 3 punching package, with respect to the housing 2. The screw also has a washer 8. Again, an immediate contact between the actuator 3 and housing 2 is avoided. Because of that and the

Arrangement of the elastomer component 4 between the actuator 3 and the housing 2, there is a vibration-decoupling between the actuator 3 and housing. 2

The third embodiment shown in FIG. 4 differs in FIG

Essentially of the embodiments described above in that the elastomer component 4 is formed in several parts. This is on the one hand formed by a sleeve 4d with lateral projection, which is inserted into an opening of the housing 2, here a breakthrough of a housing 2 associated circuit board. The central opening 7 of the elastomer component 4 serves to carry out a screw connection, not shown. The

Elastomer component 4 further comprises a mat 4c, one with the

Breakthrough 7 of the sleeve 4d brought to cover breakthrough and also defines a support for the actuator, not shown. Again, an immediate contact between the actuator and housing 2 is avoided.

Due to this and the arrangement of the elastomer component 4 between the Actuator and the housing 2, there is a vibration-decoupling between actuator and housing. 2

The fourth embodiment shown in FIG. 5 differs in FIG

Essentially of the embodiment shown in Figure 2 in that a 4a of the projections 4a, 4b formed as a sleeve with lateral projections elastomer component 4 has a circumferential chamfer. The chamfer facilitates the insertion, for example pressing, of the elastomer component in the opening of the housing 2 or the printed circuit board.

The fifth embodiment shown in FIG. 4 differs in FIG

Essentially of the first and fourth embodiments described above, characterized in that the elastomer component 4 is formed in several parts. This is formed on the one hand by an outer sleeve 4d with lateral projection, which is inserted into an opening of the housing 2, here a breakthrough of a housing 2 associated circuit board. The outer sleeve 4f encloses

a form-fitting inner sleeve 4 f, the central opening 7 of the

Elastomer component 4 defined and the implementation of a screw, not shown, is used. The elastomer component 4 further comprises a mat 4c which has a breakthrough made with the opening 7 of the sleeve 4d breakthrough and further defines a support for the actuator, not shown. Again, an immediate contact between the actuator and housing 2 is avoided. Because of this and the arrangement of

Elastomer component 4 between the actuator and the housing 2, there is a vibrational decoupling between actuator and housing 2. The inner sleeve 4f has respect to the outer sleeve 4d lower elasticity and are connected via a mutual teeth 4e in positive connection with each other.

With reference to Figure 7, the actuator 3 will be explained with its taking place via the screw 10 fixing the case not shown. The actuator 3 has a coil 3a and for guiding the electric field generated by the coil 3a, a punching package 3b made of soft magnetic

Material on. Belonging to the storage means 10 elastomer component 4 has a mat of elastomeric material 4c and the for insertion into the Breakthrough of the housing provided sleeve 4d. The mat 4c defines the housing-side support for the actuator 3. Due to the central opening of the elastomer component 4, a screw connection is made from the nut 5b and the screw 5a, which is the actuator 3, in this case belonging to the actuator 3

Stanzpaket 3b, with respect to the housing sets, without it to a

direct contact of the actuator 3 comes with the housing. Because of this and the arrangement of the elastomer component 4 between the actuator 3 and the housing, there is a vibration-decoupling between actuator 3 and housing.

FIG. 8 shows an embodiment of an elastomer component 4 used as part of the storage means 20 or restoring means. The storage means 20 have leaf springs Γ of spring steel with a substantially U-shaped form. In the U-shaped curvature and this filling the designed as a wedge-shaped insert made of elastomeric elastomer component 4 is used, whereby it acts as a vibration damper.

FIG. 9 shows a further embodiment of an elastomer component 4 used as part of the storage means 20 or restoring means. The storage means 20 in turn have leaf springs Γ of spring steel with a substantially U-shaped form. In the U-shaped curvature and this filling the designed as a wedge-shaped insert made of elastomeric elastomer component 4 is used, whereby it acts as a vibration damper. The

Elastomer component 4 and the leaf spring Γ act positively and non-positively to prevent loss of the elastomeric component 4. For this purpose, the elastomer component 4, the flanks of the leaf spring Γ encompassing projections 22 to the elastomer component 4 in the U-shaped

Curvature of the leaf spring Γ set in a first direction. Lateral projections 21 of the leaf spring Γ bear against the elastomer component 4 in order to fix the elastomer component 4 in a second direction orthogonal to the first direction with respect to the leaf spring Γ.

Claims

Claims:

1. Operating device (1), comprising:

a housing (2);

an actuating part (6) which defines an actuating surface (6a) and which comprises a sensor unit comprising one (9) or more sensors for

Sensing a touch and / or a compressive force on the

Actuating surface (6a) is assigned;

Storage means (20), by means of which the actuating part (6) consists of a

Resting position is movably mounted on the housing (2);

Return means (20) for elastic return of the actuating part (6) in the rest position;

an actuator (3) for driving the actuating part (6) to generate a haptic feedback;

Fastening means (10) for fixing the actuator (3) on the housing (2), wherein the storage means (20) and / or the return means (20) and / or the fastening means (10) an elastomer component (4), such as

Rubber component.

2. Operating device (1) according to the preceding claim, wherein the

Elastomer component (4) is rotationally symmetrical.

3. Control device according to one of the preceding claims, wherein the elastomer component (4) is formed substantially as a sleeve.

4. Operating device (1) according to the preceding claim, wherein the

Sleeve (4) defines an opening (7) for a positive connection or a frictional connection, such as a screw connection.

5. Operating device (1) according to one of the preceding claims, wherein the elastomer component (4) is inserted into an opening of the housing (2), for example, is pressed or fixed by positive and / or non-positive connection to the housing (2).

6. Operating device (1) according to one of the preceding claims, wherein the elastomer component (4) is designed in several parts.

7. Operating device (1) according to the preceding claim, wherein the elastomer component (4) is defined by a mat and a sleeve, which are arranged adjacent to each other.

8. operating device (1) according to the preceding claim, wherein the fastening means (10) comprise the elastomer component (4) and this at least partially between the actuator (3) and the housing (2) is arranged.

9. Operating device (1) according to one of the preceding claims 6 to 8, wherein the elastomer component (4) has an inner part (4f) and an outer part (4d), for example an inner sleeve and an outer sleeve.

10. Operating device (1) according to the preceding claim, wherein the inner part (4f) and the outer part (4d) are positively connected to each other, for example by a toothing (4e).

11. Operating device (1) according to one of the preceding claims, wherein the actuator (3) is an electromagnetic actuator and the actuator is designed, for example, to drive the actuating part (6) parallel to the plane defined by the actuating surface (6a).

12. Operating device (1) according to one of the preceding claims, wherein the restoring means (20) a plurality of substantially U-shaped

Have spring steel sheets (Γ) and the elastomer component (4) in each case the U-shaped curvature of the spring steel sheets (Γ) is arranged completely or partially filling.

13. Operating device (1) according to the preceding claim, wherein the spring steel sheets (Γ) and the elastomer component (4) cooperate positively and / or non-positively.

14. Use of the operating device (1) according to one of the preceding claims in a motor vehicle.