WO2019179711A1

WO2019179711A1 - Gear knob display device, and method for producing it

Info

Publication number: WO2019179711A1
Application number: PCT/EP2019/054175
Authority: WO
Inventors: Johannes Kirchhoff
Original assignee: Zf Friedrichshafen Ag
Priority date: 2018-03-20
Filing date: 2019-02-20
Publication date: 2019-09-26
Also published as: DE102018204231A1

Abstract

The invention relates to a gear knob display device (100) for the gear or drive position selector switch of a motor vehicle, having: - a display (20); - a glass cover (10) which covers the display (20); and - a frame (50) which receives the display (20) and the glass cover (10). According to the invention, the display (20) and the frame (50) are decoupled mechanically, with the result that the display (20) can move relative to the frame (50). Furthermore, the invention relates to a method for producing the gear knob display device (100) and to a gear knob (200) having a gear knob display device (100).

Description

Shift knob display and method of manufacture

The invention relates to a shift knob display device for the shift knob or shift lever of a gear or speed selector switch of a motor vehicle, with a display and a cover glass. The invention further relates to a method for producing a shift knob display device.

Patent EP 1 502 802 A1 describes a display device which has a display with a variable display and a transparent cover. The display device is designed so that it uses a frame-like

Recording device can be arranged in the head area of a shift knob.

The prior art further refers to the patents DE 10 2008 059 982 A1, DE 10 2012 022 651 A1 and US 9,383,000 B2.

A shift knob indicator is subject to operating forces, which can result in malfunction or even damage to the display.

The object of the invention is to provide a shift knob display device, which offers the display better protection and in particular is easy to produce.

The object is achieved by the shift knob display device according to the invention with the features of patent claim 1. With a

sibling claim, the invention also extends to a

Manufacturing. With a further independent claim, the invention further extends to a shift knob having a display device according to the invention or inventively prepared. Further developments and embodiments of the invention will become apparent for all subject matter of the dependent claims, the following description of the invention and also from the drawing. The shift knob display device according to the invention (or

Shift knob indicator) includes:

- a display, d. H. at least one display;

- a cover glass, which covers the display; and

- A frame that receives the display and the cover glass (as well as the attachment of the display device on or in the shift knob is used).

According to the invention, the display and the frame are mechanically decoupled so that the display can move relative to the frame.

With the construction according to the invention, as it were, a floating mounting of the display is achieved in the frame, so that the display in the normal direction (perpendicular to the display surface) and / or in the transverse direction with constructive

predetermined freedom of movement (game) can move relative to the frame. The freedom of movement can amount to a few tenths of a millimeter (for example 0.1 mm to 0.3 mm). As a result, on the one hand, a direct force flow between the display and the frame is prevented when applying operating or actuating forces and, on the other hand, the display can dodge so that functional impairments or damage are avoided. The inventive decoupling of display and frame but also allows a different thermal expansion (Delta Alpha problem) and prevented due to lack of thermal bridges direct heating of the frame and the shift knob through the display and vice versa. The display and the frame are so far thermally decoupled.

A display is in particular a screen for the visual display of variable or dynamic information (for example for the representation of the shift pattern, an active gear, a shift recommendation, a welcome logo and the like). The display can z. Example, a pixel-based LCD, OLED or MicroLED screen. The display is preferably designed as a prefabricated display module. The display or display module can be equipped with a touch function. Likewise, a touch screen film can be used, the z. B. between the display and cover glass or is laminated on the inside of the coverslip. The cover glass (cover) is transparent and can be flat or curved. The cover glass preferably has a curved cover glass outer surface (which later faces the observer or operator) and a planar cover glass inner surface (which later faces the display). The cover glass can be made of plastic or real glass.

For receiving the display and the cover glass, the frame is formed with a corresponding frame opening or recess. The frame can be made of metal or plastic. The frame is preferably one

Injection molded part, in particular a plastic injection molded part. The frame may be formed as a separate frame, which is / is inserted into a corresponding recess of the shift knob. The frame can also be part of the shift knob and can in particular be integral with the shift knob

be educated.

It is preferably provided that the display and the cover glass form a display cover glass composite, including the display, in particular by means of optical

Adhesive, surface is glued to the cover glass inner surface, and this, in particular stable, display cover glass composite is arranged in a trained with paragraph frame opening of the frame, such that a (laterally across the display)

projecting edge region of the cover glass rests on the shoulder and between the display and the frame no direct rigid connection, d. h., The display and frame are free of a direct rigid connection or are exempt from a direct rigid connection and are thus mechanically decoupled.

At the shoulder in the frame opening can be arranged against the protruding and adjacent edge region of the cover glass sealing gasket, which prevents the ingress of dirt, moisture and the like. As a seal, a sealing and / or adhesive or a sealing ring can be used. In the case of a frame formed as a plastic injection-molded part, the seal may also be injection-molded (the frame is designed, for example, as a 2-component injection molded part). On the display and in the frame opening of the frame interlocking locking elements may be provided which in particular as locking lugs and

Locking depressions are formed. The locking elements allow only a resilient latching to prevent inadvertent release of the display cover glass composite used in the frame. One about it

outgoing power flow is not possible.

On the display and in the frame opening of the frame complementary guide elements may be provided. The guide elements allow during assembly or when inserting the display cover glass composite in the frame a guided (linear or possibly also rotational) movement, but without allowing in the assembled state, a direct flow of power between the display and frame. As a result, for example, the meshing of latching elements (see above) can be simplified. The guide elements can also be designed so that a false installation of the display is prevented (Poka-Yoke principle). Preferably, a combined embodiment of the locking and guiding elements is provided, in particular such that they are designed as latching lugs and guide grooves, at the ends of which locking recesses are provided for the latching lugs.

The inventive method for easy production of a

Shift knob display device according to the invention with a decoupled display comprises at least the following steps:

- Providing display or display module, cover glass and frame;

- Gluing the display with the coverslip, wherein a display cover glass composite is formed; and

- Aligning and inserting the display cover glass composite in the frame, where appropriate, a guided linear or rotary movement and / or a latching between display and frame.

The display can be electrically connected or connected when inserted into the frame by means of self-connecting contact elements. An assembly or manufacturing step for electrical connection can thus be saved. The invention will be explained in more detail with reference to the drawing. The features shown in the drawing and / or explained below may, even independently of specific combinations of features, be general features of the invention and further develop the invention accordingly.

Fig. 1 illustrates in a sectional view the insertion of a preassembled display cover glass composite in a frame for producing a

shift knob display device according to the invention.

FIG. 2 shows a sectional illustration of a shift knob display device produced according to FIG. 1.

In Fig. 1, a display or a display module 20 is shown, the surface by means of optical adhesive 30 and free of air gaps with a laterally or in the transverse direction

protruding cover glass 1 0 is glued. The cover glass 10 may be formed with a curvature, as indicated by the dashed line. The pre-assembled display cover glass composite 40 is, as indicated by the arrow, in the

prepared frame 50 used. The frame 50 has a correspondingly shape-adapted frame opening 51, which towards the top 52 with a

circumferential shoulder or stepped fold 53 is formed. In paragraph 53 is a sealant or seal 56. In the frame opening 51 guide grooves 54 are formed, which at their lower and inner ends latching recesses 55th

exhibit. Corresponding to this, the display 20 has lateral locking lugs 25, which may be formed directly on the display 20 or on a subframe or the like. Likewise, the guide grooves and locking recesses can also be formed on the display 20 and the latching lugs on the frame 50 or in the frame opening 51.

The display 20 and the cover glass 10 are joined cohesively and form a stable and in particular inseparable display cover glass composite 40th Zum

Inserting the display cover glass composite 40, the locking lugs 25 are aligned with the guide grooves 54, wherein in particular only one constructive

predetermined alignment of the display 20 relative to the frame 50 is made possible, to avoid installation errors (poka-yoke principle). The insertion then takes place in a guided movement, wherein the locking lugs 25 slide through the guide grooves 54 and finally engage in the locking recesses 55. In this case, a resilient or direction-dependent game having Verrasterung between the display 20 and the frame 50 is formed, as shown in Fig. 2, held by the display-cover glass composite 40 an unwanted Fierausfallen or removal is prevented. (With the latching can be achieved only low, acting in the insertion or joining direction holding forces.)

When inserting the projecting edge portion of the cover glass 10 abuts the shoulder 53, so that the cover glass 10 rests with its inside edge region on the shoulder 53 and rests on the shoulder 53. The seal 56 further prevents the ingress of dirt and moisture. With the seal 56 can optionally also be a bond between the cover glass 10 and frame 50 done. The circumferential shoulder 53 forms a shape-adapted recess for the substantially gap-free recording of the cover glass 10, such that the coverslip Au ßenfläche flush with the frame top 52 terminates. The cover glass 10 is thus firmly enclosed. The stable display cover glass composite 40 is detachably connected or separably connected to the frame 50 and can, for example, with the aid of a suitable tool, be dismantled again. The shoulder 53 and the seal 56 can be printed in a known manner by an inside on the cover glass 10

Color edge (covering pressure) to be covered.

In the embodiment shown, the insertion takes place with a guided linear movement (insertion). In particular, in the case of a round display 20 and cover glass 10, the insertion can also take place with a guided rotational movement (screwing in), for which purpose the guide grooves 54 can be designed helically in a correspondingly round frame opening 51.

The frame 50 may be formed as a loose frame. After inserting the display cover glass composite 40 in the frame 50, the shift knob display device 100 formed thereby can be inserted into the recess provided in the shift knob 200, as shown in FIG. 2. Previously, the display must be 20 are still connected to an electrical interface in the switch knob 200, in particular by means of flexible cable. Preferably, the electrical connection is made during insertion by means of self-connecting contact elements, including on the display 20 and in the recess of the shift knob 200 corresponding

Connector or the like are present. The frame 50 can also

Be part of the shift knob 200 and may in particular be integrally formed with the shift knob 200, so that the preassembled display cover glass composite 40 inserted directly into the knob 200 and the shift knob 200 is closed. Here, too, the electrical connection of the display 20 can take place by means of self-connecting contact elements.

The shift knob display 100 shown in FIG. 2 can be easily manufactured as previously explained, and also offers an improved

Screen protector, since the display 20 and the frame 50 are mechanically decoupled. The display 20 is disposed laterally and downwardly virtually exposed.

In particular, there is no integral connection between the display 20 and the frame 50 (i.e., the display 20 and the frame 50 are

cohesive connection-free) over which any forces could be transmitted. On the cover glass 10 and / or the frame 50 acting operating forces F are derived only via the frame 50 in the shift knob 200. The display 20 is neither involved in a power flow nor are any counter or support forces applied via the display 20. In addition, since there is no direct rigid connection between the display 20 and the frame 50, the display 20 may move relative to the frame 50, as indicated by the multi-directional arrow, and may give way to the operators F.

Functional impairments and damage to the display 20 can thus be effectively prevented. Furthermore, different thermal expansions are made possible and direct heat transfer between the display 20 and the frame 50 is prevented. Bezuaszeichen

10 cover slip

0 display

5 guide / latching element

0 adhesive

0 Display cover glass composite

0 frame

1 frame opening

2 frame top

3 paragraph

54 guide element

55 locking element

56 seal

100 display device

200 shift knob

F operating forces

Claims

claims

1 . A shift knob indicator (100) for the gear or speed selector switch of a motor vehicle, comprising:

- a display (20);

- a cover glass (10) covering the display (20); and

- One the display (20) and the cover glass (1 0) receiving frame (50);

characterized in that

the display (20) and the frame (50) are mechanically decoupled so that the display (20) can move relative to the frame (50).

Second shift knob display device (100) according to claim 1, characterized in that the display (20) and the cover glass (10) form a display cover glass composite (40), including the display (20) flat with the cover glass inner surface is glued, and this display cover glass composite (40) in one with paragraph (53) formed

Frame opening (51) of the frame (50) is arranged, such that a

projecting edge region of the cover glass (10) rests against the shoulder (53) and there is no direct rigid connection between the display (20) and the frame (50).

Third shift knob display device (100) according to claim 2, characterized in that at the shoulder (53) of the frame opening (51) against the protruding edge region of the cover glass (10) sealing gasket (56).

4. shift knob display device (100) according to claim 2 or 3, characterized in that on the display (20) and in the frame opening (51)

interlocking locking elements (25, 55) are provided.

5. shift knob display device (100) according to claim 2, 3 or 4, characterized in that on the display (20) and in the frame opening (51)

complementary guide elements (25, 54) are provided.

6. shift knob display device (100) according to one of the preceding

Claims, characterized in that the frame (50) is part of a shift knob (200).

A method of manufacturing a shift knob display (100) according to any one of the preceding claims, comprising the steps of:

- Gluing the display (20) with the cover glass (10), wherein a display cover glass composite (40) is formed; and

- Aligning and inserting the display cover glass composite (40) in the frame (50).

8. The method according to claim 7, characterized in that the insertion takes place in a guided linear movement or in a guided rotational movement.

9. The method according to claim 7 or 8, characterized in that the display (20) when inserted into the frame (50) by itself connecting

Contact elements is connected electrically.

10. shift knob (200) of a gear or speed selector switch with an integrated display device (100), which is formed according to one of claims 1 to 6 and / or produced by a method according to one of claims 7 to 9.