CN217030533U

CN217030533U - Fixing assembly for fixing display device and display device

Info

Publication number: CN217030533U
Application number: CN202220340053.8U
Authority: CN
Inventors: 戈德弗鲁瓦·博; 康坦·让桑; 让-巴蒂斯特·维亚图; 埃尔万·萨戈-迪泰特
Original assignee: Faurecia Interieur Industrie SAS
Current assignee: Faurecia Interieur Industrie SAS
Priority date: 2021-02-19
Filing date: 2022-02-18
Publication date: 2022-07-22
Anticipated expiration: 2032-02-18
Also published as: FR3120099B1; FR3120099A1

Abstract

The utility model provides a fixing assembly for fixing a display device and the display device. The display device comprises a screen (2) and a support (4), the fixing assembly comprising at least one first aperture (16) integral with the support; a second aperture (18) integral with the screen (2) and extending with at least one portion thereof facing at least one portion of the first aperture (16); and a fixing device (20) comprising a female fixing part (26) introduced into the first and second apertures (16, 18) and a male fixing part (28) introduced into the female fixing part (26). The female securing member (26) includes a receiving body made of a material that is elastically deformable between an installation position and a locked position, wherein the receiving body secures the securing device (20) in the first and second apertures (16, 18).

Description

Fixing assembly for fixing display device and display device

Technical Field

The present invention relates to a fixing assembly for fixing a display device. The utility model also relates to a display device wherein the screen is fixed to the support by such a fixing assembly.

Background

In display devices, for example for the cabin of a vehicle, it is known to attach a screen or panel to a support with a lens so as to form the display surface of the display device and to ensure the fixing of the screen to the lens and the transmission of light by means of an optical adhesive. For example, the optical adhesive is activated and/or polymerized by heat, ultraviolet radiation, or after a certain time interval. During this polymerization operation, the screen should remain stationary in all directions with respect to the lens and therefore to the support. Therefore, the screen should be firmly fixed to the support. This firm and reversible fixing is achieved, for example, by screwing the screen onto the support. However, such fixing also imposes a great stress on the screen, which may cause a defect in image display. Therefore, such stress may cause, for example, a mueller effect on the display surface, thereby deteriorating the quality of the displayed image.

In order to avoid these adverse effects, a flexible fixing device has been proposed in which an adhesive element ensures the adhesion of the screen to the support. However, this assembly is irreversible.

SUMMERY OF THE UTILITY MODEL

One of the objects of the present invention is to propose a fixing assembly for fixing a screen to a support which ensures reliable fixing of the screen on the support in a reversible manner and without imposing stresses which may generate display defects on the display surface of the display device.

To this end, the utility model relates to a fixing assembly for fixing a display device comprising a screen and a support, the fixing assembly comprising at least one first aperture integral with the support; a second aperture integral with the screen, at least a portion of the second aperture extending facing at least a portion of the first aperture; and a fixing device comprising a female fixing part introduced into the first and second apertures and a male fixing part introduced into the female fixing part, wherein the female fixing part comprises a receiving body made of a material elastically deformable between an installation position in which the female fixing part is displaceable in the first and second apertures before the male fixing part is inserted into the receiving body and a locking position; and in which, when the male fixing member is inserted into the receiving body, the receiving body presses against at least a portion of a wall of the first aperture or the second aperture and fixes the fixing means in the first and second apertures.

The fixing device of the fixing assembly according to the utility model allows to effectively lock the screen on the support and in particular to prevent the position of the screen with respect to the support from varying, without stressing the screen. These stresses are therefore absorbed between the male and female fixing elements. Thus, the display quality on the display surface is maintained. Furthermore, by reducing the stress exerted on the screen, the risk of delamination of the optical glue between the screen and the lens is reduced.

The fixing assembly according to the utility model may comprise one or more of the following features, considered alone or in any technically feasible combination:

in the locking position, the receiving body is pressed against at least a portion of the wall of the first orifice and at least a portion of the wall of the second orifice;

the receiving body of the female fixing part is made of an elastomeric material;

the male fixing part comprises an actuating rod which is received in the receiving body of the female fixing part and presses said receiving body from the mounting position into the locking position when the actuating rod is inserted into the receiving body;

the receiving body of the female fixing part comprises a receiving opening for receiving the actuating rod, said receiving opening comprising at least one portion having a diameter smaller than the diameter of the actuating rod in the mounted position;

the outer diameter of the receiving body of the female fixing part is smaller than or equal to the diameter of the first orifice, the receiving body being forced against at least a portion of the wall of the first orifice in the locking position;

-the first aperture has an elongated shape along a first elongated direction and the second aperture has an elongated shape along a second elongated direction, the second elongated direction being different from the first elongated direction; and

the male fixing part comprises a locking surface which abuts against an edge of the second aperture opposite to the first aperture.

According to another aspect, the utility model also relates to a display device comprising at least one screen and a support, said screen being fixed to the support by means of the above-mentioned fixing assembly.

The display device according to the utility model may further comprise the feature that according to this feature the second aperture extends in an interface part fixed to the screen, said interface part being fixed to the support by at least one fixing means.

Drawings

Other aspects and advantages of the utility model will become apparent from a reading of the following description, given by way of example and with reference to the accompanying drawings, in which:

figure 1 is a schematic rear view of a display device comprising a fixing assembly according to the utility model,

FIG. 2 is a schematic top view of a securing assembly in an installed position according to the present invention, an

FIG. 3 is a schematic cross-sectional view of a securing assembly in a locked position according to the present invention.

Detailed Description

With reference to fig. 1, a display device 1 is described, comprising a screen 2 and a support 4, which are fixed to each other by a fixing assembly. Such a display device 1 is for example intended to be mounted in the cabin of a vehicle in order to display information relating to the state of the vehicle and/or its driving and/or to display audiovisual content. For example, the display device 1 is mounted on a decorative element of a cabin, such as a dash board, a door panel, a center console, a seat, an armrest, and the like. Although not shown, the display device may further comprise a lens forming the display surface of the display device and protecting the screen 2, the lens extending over the support 4 facing the screen 2, the optical adhesive ensuring the fixation of the lens on the screen 2 and ensuring the transmission of light between the screen 2 and the lens without interference.

The screen 2 comprises a body 6 bounded by a front face (not shown) extending facing the lens and forming an image-emitting surface of the screen 2, and a rear face 8 opposite the front face, the front and rear faces being connected by lateral edges 10 of the screen 2 so as to define the outline of the screen 2. The inner volume of the body 6 comprises the elements required to display an image on a display surface, such as a light source and electronics. For example, at least one connection element (not shown) allowing to power the electronics and/or for transferring control signals and/or data is further provided and leads from the inner volume to the outside, for example on the rear face 8 of the body 6. For example, the rear face 8 is further provided with screw seats which, according to one embodiment, allow screwing the interface member 12 to the screen 2, as will be described in detail hereinafter. In addition, the interface member 12 is fixed to the screen 2 by caulking, for example. The utility model is applicable to any type of screen 2, such as an LCD ("liquid crystal display", in french "liquid crystal screen") or OLED ("organic light emitting diode", in french "organic electroluminescent diode") screen.

According to an embodiment, the screen 2 is a touch screen, which allows controlling the function of the display device 1 and/or the vehicle in which the display device 1 is mounted by digital contact with the display surface. For this purpose, a capacitive film is applied, for example, on the front of the screen 2 and/or on the rear of the lens.

The support 4 is arranged to receive the screen 2 and provide an interface between the screen 2 and the lens and between the display device 1 and the environment of the display device 1 in the vehicle. In other words, the support 4 receiving the screen 2 is mounted on a decorative element receiving the display device 1, for example in an opening provided for this purpose on the decorative element.

For example, the support 4 is in the form of a frame. The frame defines an opening having a shape substantially complementary to the outline of the body 6 of the screen 2 and receiving the screen 2. Thus, the support 4 comprises one or more branches 14 defining the opening of the frame and each abutting against a lateral edge 10 of the body 6 of the screen 2.

The screen 2 is fixed to the support 4 by means of a fixing assembly, which, as can be seen more particularly in fig. 2 and 3, comprises at least one first aperture 16, a second aperture 18 and a fixing means 20.

The first aperture 16 is integral with the support 4. By "integral with the support" it is meant that the first aperture 16 is implemented in one part of the support 4. Thus, the first aperture 16 is implemented, for example, in one of the branches 14 forming the frame of the support 4. The aperture 16 opens, for example, in the rear face of the branch 14, which is substantially parallel to the rear face 8 of the body 6 of the screen and opposite to the front face of the branch 14 receiving the lens of the display device. The first aperture 16 extends in a direction substantially parallel to the direction from the rear to the front of the body 6 of the screen, i.e. the thickness direction of the screen 2. The first aperture 16 is delimited by a wall extending in the branch 14 from the face where the first aperture 16 opens. For example, the wall of the first aperture 16 is substantially circular in cross-section having a first diameter. As a variant and preferably, as shown in fig. 2, the wall of the first aperture 16 is of elongate, oval, elliptical, rectangular or rounded-edged rectangular cross-section and therefore the first diameter corresponds to the smallest dimension of the cross-section, and thus in the case of a rectangular first aperture to the width. Thus, preferably, the first aperture is elongate in a first elongate direction. It will be appreciated that the first aperture may open in the front of the branch 14, but its implementation in the rear allows to simply hide the fixing assembly of the display device 1 when it is mounted on the trim element.

According to the embodiment shown in fig. 1, each branch 14 of the frame comprises at least one first aperture 16. In the case of a substantially rectangular shape of the body 6 and the frame 14, as shown in fig. 1, the branch 14 extending along the length of the frame comprises for example two first apertures 16 and the branch 14 extending along the width comprises for example one first aperture 16. The number of first apertures 16 generally depends on the dimensions of the screen 2 and the frame and is chosen to ensure the fixing of the screen 2 to the support 4 so as to allow an effective fastening of the screen 2 with respect to the support 4 in all directions. In other words, the larger the screen, the more the first apertures 16.

The second aperture 18 is integral with the screen 2. By "integral with the screen 2" it is meant that the second aperture 18 is implemented in the body 6 of the screen 2, for example in a fixing tab extending peripherally of the body 6 or in a part fixed to the body 6 of the screen and immovable with respect to the latter (for example the interface part 12), as shown in fig. 1 and 2.

The interface member 12 is formed, for example, by a plurality of ribs 22, these ribs 22 extending against the rear face 8 of the body 6 of the screen 2 and comprising at least one end portion extending projecting from the body 6 facing the branch 14 of the frame. By "rib 22" is meant any elongated member, such as in the form of a rod, bar or other shape. According to the embodiment shown in fig. 1, each rib 22 extends from a branch 14 of the frame to an opposite branch 14 in the frame and each end of the rib 22 extends facing the first aperture 16 of the branch 14. For example, screws 24 pass through the interface member 12 and are screwed to screw seats provided on the rear face 8 of the body 6 of the screen 2 to fix the interface member 12 to the screen 2. The interface member 12 may be formed as a single piece or include a plurality of different ribs. The number and shape of the ribs may vary depending on the size and shape of the screen 6 and the support 4. As a variant, the interface member 12 is of a different shape, as long as it comprises a portion extending facing each first aperture 16 of the support 4. Thus, according to a variant, the interface member 12 can cover the entire rear face of the screen 2.

Each first aperture 16 of the second aperture 18 facing the support 4 is formed in the interface member 12 or body 6 of the screen 2. The following description will be made with reference to the second aperture 18 implemented in the interface member 12, but it will be understood that it also applies to the second aperture 18 implemented directly in the body 6 of the screen 2.

The second aperture 18 extends through the interface member 12 and at least a portion thereof faces at least a portion of the first aperture 16 such that elements passing through the second aperture 18 may be introduced into the first aperture 16. The second aperture 18 extends in a direction substantially parallel to the axis of the first aperture 16. The second orifice 18 is defined by walls extending in the rib 22 and opening in both faces of the rib 22. When the first aperture 16 is elongate in shape, the wall of the second aperture 18 is, for example, substantially circular in cross-section having a second diameter. However, as a variant and preferred, the wall of the second aperture 18 is of elongate, long oval, elliptical, rectangular or rounded-edge rectangular section, and therefore the second diameter corresponds to the smallest dimension of the section, and thus in the case of a rectangular second aperture to the width. Therefore, preferably, the second aperture 18 is elongated in the second elongated direction. When the interface member 12 is mounted on the screen 2, the second direction is different from the first direction such that only a portion of the first aperture 18 extends facing a portion of the first aperture 16 at a position where the cross sections of the apertures cross each other, these facing portions corresponding to the position of the fixing means 20 in the first and

second apertures

16, 18, as previously described. According to an embodiment, the second direction is substantially perpendicular to the first direction. According to an embodiment, the second diameter is larger than the first diameter, but the first and second diameters are preferably substantially equal.

The fixing means 20 comprise a female fixing element 26 and a male fixing element 28 and are introduced in the first and

second apertures

16, 18 to fix the screen 2 to the support 4.

The female fastening part 26 comprises a receiving body for receiving the male fastening part 28, which receiving body is made of an elastically deformable material. The receiving body is thus formed, for example, by a cylindrical socket made of elastomeric material, as shown in fig. 2 and 3. The outer diameter of at least one portion of the receiving body (corresponding to the diameter of its cross-section) is for example smaller or equal to the diameter of the first orifice 16. The receiving body is for example substantially circular, rectangular or square in cross-section and its diameter (corresponding for example to its length in the case of a rectangular cross-section) is for example substantially equal to the width of the first aperture 16 (in the case of an aperture in the shape of a rounded-edge rectangle), as shown in fig. 2. Thus, when the female fixation member 26 is placed in the first aperture 16, it is retained in the first aperture 16 by abutting at least one portion of the receiving body against two opposite edges of the first aperture 16 and can be moved out of the first aperture along the length of the first aperture 16 (i.e. in the first direction of elongation) and in the direction of removal of the female fixation member 26, as shown in fig. 2. Similarly, the diameter of the receiving body is smaller than or equal to the second aperture 18, for example substantially equal to the width of the second aperture 18, so as to be locked along the width of the second aperture 18 and to be able to move out of the second aperture 18 along the length of the second aperture 18 (i.e. along the second direction of elongation) and along the direction of extraction of the female fixing member 26. Thus, providing the first and

second apertures

16, 18 with the same diameter allows to achieve a receiving body with a constant diameter, which simplifies its structure. This arrangement, in which the female member 26 can be displaced in the first and second directions of elongation, allows for large tolerances in positioning the interface member 12 relative to the support 4, so that the position of the female fixing member 26 in the first and

second apertures

16, 18 can be adapted to all relative positions between the first and

second apertures

16, 18 to be placed in the region of overlap between the first and

second apertures

16, 18, that is to say in the region where the cross sections of these apertures cross each other.

In the mounted position, when the male fixing part 28 is not received in the female fixing part 26, the male fixing part 28 is thus placed in the portion facing the first and

second apertures

16, 18 and can be displaced in the direction of extraction in these

apertures

16, 18.

The receiving body further comprises a receiving opening 30, the receiving opening 30 extending in the receiving body in a direction substantially parallel to the axis of the first and

second apertures

16, 18 when the female fixation part 26 is received in the first and

second apertures

16, 18. The receiving opening 30 passes through the entire receiving body, for example, as shown in fig. 3. As a variant, the receiving opening 30 is non-through and leads to the outside of the receiving body only from the side of the second aperture 18 when the female fixing part 26 is received in the first and

second apertures

16, 18.

When the female securing member 26 is received in the first and

second apertures

16, 18, the receiving body extends, for example, in the first aperture 16 and includes a portion extending in the second aperture 18, as shown in fig. 3.

The male securing member 28 is introduced into the female securing member 26 to press at least a portion of the receiving body of the female securing member 26 against at least a portion of the wall of the first aperture 16 and against a portion of the wall of the second aperture 18 to secure the securing device 20 in the first and

second apertures

16, 18, as shown in fig. 2. In other words, when the male fixing member 28 is introduced into the female fixing member 26 and the female fixing member 26 is deformed from the mounting position (the position occupied when the male fixing member 28 is not introduced into the female fixing member 26) to the locking position (when the male fixing member 28 is introduced into the female fixing member 26), the male fixing member 28 locks the female fixing member 26 in the first and

second apertures

16, 18 in all directions.

To this end, the male fixing part 28 comprises an actuating rod 32 which is provided for being introduced into the receiving opening 30 of the female fixing part 26 and pressing the material of the receiving body from the mounting position to the locking position against the wall of the first aperture 26 during this introduction. To this end, the receiving opening 30 of the female fixing part 26 comprises at least one of the following: the diameter of the at least one portion is, for example, smaller than the diameter of the actuating rod 32 when the male fastening part 28 is not received by the female fastening part 26. Thus, by introducing the actuating rod 32 into the receiving opening 30, the actuating rod 32 elastically deforms the receiving body in a radial direction substantially perpendicular to the axis of the receiving opening 32 and forces the outer wall of the receiving body against the wall of the first aperture 16 and locks all movements of the fixation device 20 in all directions in the first and

second openings

18, 20. Preferably, the diameter of the entire receiving opening 30 of the receiving body is smaller than the diameter of the actuating rod 32, so that the receiving body is forced against the walls of the first aperture 16 by exerting a force against the walls of these apertures over the entire portion of the receiving body extending in the first aperture 16 and the second aperture 18, which improves the retention of the fixing means 20 in the first and

second apertures

16, 18 and ensures the fixing between the interface part 12 and therefore the screen 2 and the support 4.

The male fixing element 28 also comprises, for example, a head 34, which itself extends outside the first and

second apertures

16, 18 and forms a blocking surface extending on the edge of the second aperture 18 opposite the first aperture 16. In other words, the locking surface is applied around the second orifice 18 on the face of the rib 22 opposite to the face of the rib 22 abutting against the branch 14. Thus, when the male fixing part 28 is received in the female fixing part 26, the rib 22 is held with respect to the support 4 between the head 34 of the male fixing part 28 and the branch 14 of the frame comprising the first aperture 16, as shown in fig. 3. According to an embodiment, the interface element 12, in particular the ribs 22, is applied on the branches 14 of the frame. According to another embodiment, a space extends between the interface element 12 and the branches 14 of the frame, as shown in fig. 3. According to particular embodiments, the fixation device 20 may include additional components, such as a washer, that extends around the female fixation component 26 between the interface component 12 and the branches 14 of the frame and fills the space therebetween. As a variant, a washer is integrated into the female fixing part 26 and forms a flange around the receiving body to maintain the distance between the interface part 12 and the branch 14 of the frame.

The above description is for an embodiment in which the female fixation component 26 is positively locked against the walls of the first and

second apertures

16, 18. However, it is understood that, as a variant or in addition, the utility model may also be implemented so as to be forced against the wall of only one of the two orifices, the fixation between the interface member 12 and the support 4 thus being obtained by means of the head 34 of the male fixing member 28, which prevents the separation between the interface member 12 and the support 14.

Where a plurality of pairs of first and second apertures are provided, each pair of apertures receives a fixing means 20 as described above.

When the screen 2 is mounted on the support 4, the screen 2 is positioned on the support 4 (for example by a robot) so as to place the second aperture or apertures 18 facing the first aperture 16. As shown in fig. 2, this positioning may be quite coarse due to the elongated shape of the first and

second apertures

16, 18. According to an embodiment, the lens is fixed on the support 4 before positioning the screen 2 on the support 4, and an optical glue is applied on the screen 2 or the lens so that the optical glue extends between the screen 2 and the lens when the screen 4 is positioned on the support 4 by the robot. As a variant, the fixing of the lens on the support 4 can be carried out once the screen 2 is mounted on the support 4, in which case the application of the optical adhesive can be carried out before or after the screen 2 is mounted on the support 4.

Once the screen 2 is positioned on the support 4, female fixing elements 26 are introduced in each pair of first and

second apertures

16, 18. The male fixing elements 28 are then introduced into each female fixing element 26 until the locking surface of the head 34 abuts against the edge of the second aperture 18. The introduction is such that the receiving body of each female fixing element 26 transforms by deformation from the mounting position to a locking position in which the fixing means 20 are forcibly retained in each pair of first and

second apertures

16, 18. As mentioned above, the introduction of the male fixing element 28 into the female fixing element 26 allows the final positioning of the screen 2 on the support 4.

The above-described fixing assembly allows the screen 2 to be firmly fixed to the support 4 in a simple manner and without exerting a large pressure on the screen. In fact, the stresses due to the fixing of the screen 2 on the support 4 are absorbed between the female 26 and male 28 fixing parts. Therefore, fixing the screen 2 on the support 4 is not likely to cause display defects, in particular undesirable mueller effects. Fixing the screen 2 on the support 4 allows the screen 2 to be fixed in all directions relative to the support 4 without the need for additional holding tools. Thus, the orientation of the screen 2 is maintained, in particular with respect to the lens mounted on the support 4 and in particular during the polymerization of the optical adhesive between the screen 2 and the lens. Thus, during this aggregation, the robot does not need to be maneuvered to maintain the fixation of the screen 2 with respect to the support 4. Thus, once the robot is used to position the screen 2 on the support 4 and the fixture 20 has been placed in position, the robot may be more optimally used, for example, for mounting another display device.

If the screen 2 is detached from the support 4, the male fixing part 28 is removed from the female fixing part 26, which causes it to return to the original shape corresponding to the mounting position, due to the elasticity of the deformation of the receiving body. Thus, the fixture 20 is reusable.

Claims

1. A fixing assembly for fixing a display device, the display device comprising a screen (2) and a support (4), the fixing assembly comprising: at least one first orifice (16) integral with said support; a second aperture (18) integral with said screen (2), at least one portion of said second aperture extending facing at least one portion of said first aperture (16); and a fixing device (20) comprising a female fixing element (26) introduced into the first aperture (16) and the second aperture (18) and a male fixing element (28) introduced into the female fixing element (26), characterized in that,

the female fixing part (26) comprises a receiving body made of a material elastically deformable between a mounting position, in which the female fixing part (26) is displaceable in the first and second apertures (16, 18) before the male fixing part (28) is inserted into the receiving body, and a locking position, in which, upon insertion of the male fixing part (28) into the receiving body, the receiving body is pressed against at least one portion of a wall of the first or second aperture (16, 18) and fixes the fixing device (20) in the first and second apertures (16, 18).

2. A fixing assembly for fixing a display device according to claim 1, characterized in that said receiving body is pressed against at least one portion of the wall of said first aperture (16) and at least one portion of the wall of said second aperture (18) in said locking position.

3. A fixing assembly for fixing a display device according to claim 1 or 2, characterised in that the receiving body of the female fixing part (26) is made of an elastomeric material.

4. A securing assembly for securing a display device according to claim 1 or 2, characterised in that the male securing member (28) comprises an actuating rod (32), the actuating rod (32) being received in the receiving body of the female securing member (26) and pressing the receiving body from the mounting position into the locking position upon insertion of the actuating rod (32) into the receiving body.

5. A securing assembly for securing a display device according to claim 4, characterised in that the receiving body of the female securing part comprises a receiving opening (30) receiving the actuating rod (32), the receiving opening (30) comprising at least one portion having a diameter smaller than the diameter of the actuating rod (32) in the mounted position.

6. A fixing assembly for fixing a display device according to claim 1 or 2, characterized in that the outer diameter of the receiving body of the female fixing part (26), which is forced against at least one portion of the wall of the first aperture (16) in the locking position, is smaller than or equal to the diameter of the first aperture (16).

7. A fixing assembly for fixing a display device according to claim 1 or 2, characterised in that the first aperture (16) is elongate in a first elongate direction and the second aperture (18) is elongate in a second elongate direction, the second elongate direction being different from the first elongate direction.

8. A fixing assembly for fixing a display device according to claim 1 or 2, characterized in that the male fixing part (28) comprises a locking surface which abuts against an edge of the second aperture (18) opposite to the first aperture (16).

9. A display device comprising at least one screen (2) and a support (4), characterized in that said screen (2) is fixed on said support (4) by means of a fixing assembly for fixing a display device according to claim 1 or 2.

10. The display device according to claim 9, wherein a second aperture (18) extends in an interface part (12) fixed to the screen (2), the interface part (12) being fixed to the support (4) by at least one fixing means (20).