JP5000634B2 - Flat screen display with points that secure the screen to the cabinet - Google Patents

Description

  The present invention relates to the field of screens, and more specifically to the mounting of a flat screen such as a liquid crystal type or LCD (liquid crystal display).

  According to the prior art, the flat screen is rigidly attached to the cabinet. This technique does not allow for effective impact resistance.

In order to improve the mechanical strength of such a screen, the patent document US2004 / 01182879 filed by Siemens (registered trademark) discloses a system for attaching a screen to a cabinet having four units. Each of the units is associated with a particular corner of the screen. According to this technique, each of the units has an elastic positioning element and an anti-vibration element. The positioning element has a nut and a part that guarantees a spacing between the screen and the cabinet. The anti-vibration element has a damper and is fixed and filled with gel on one side to the cabinet and on the other side to the extrusion that contacts the LCD screen. The damper constitutes two separate parts and is held in place by a support ring and a nut. The disadvantage of this technique is that it is relatively complex to implement.
US2004 / 01182929

  The present invention aims to overcome the disadvantages of the prior art.

  More particularly, it is an object of the present invention to enable the mounting of a flat screen on a cabinet that presents effective shock and / or vibration resistance while remaining relatively simple to implement. .

  To this end, the present invention proposes a display device comprising a flat screen, a cabinet and a screen attachment point to the cabinet, each having a damper. The device is noted in that each of the dampers is monolithic and that the screen is connected to the cabinet via the damper so that relative movement of the screen in the cabinet is possible in all directions. The

  According to a desirable feature, each damper has at least one groove and the cabinet has a plurality of guide means of the cabinet for each of the dampers.

  Hence, the positioning of the screen inside the cabinet is made easier and at the same time allows simple implementation.

  Desirably, each damper has a recess. In the recess, a rod attached to the screen is positioned to ensure a mechanical connection between the damper and the screen.

  Advantageously, the rod has a cylindrical part and a head having a larger diameter than the cylindrical part.

  According to one desirable feature, the head is housed inside the damper.

  According to one advantageous feature, the device has a part that is at least partially tubular and rigid. The tubular and rigid part is inserted between the cylindrical part of the rod and the damper to limit the movement of the rod. The head of the rod is applied to one end of the tubular and rigid part.

  According to one particular feature, the part is a rivet and the head of the rivet opposite the end is attached to the screen.

  According to another feature, the rod does not have a head.

  Desirably, each damper is cylindrical.

  Advantageously, each damper has one or more peripheral surfaces.

  According to one advantageous feature, the cabinet has at least one stop. The stop is attached to the perimeter surface of the damper associated with each of the attachment points.

  Desirably, the cabinet has an integrated front surface and an integrated rear surface, and for each of the attachment points, at least one of the front and rear surfaces is one of the dampers associated with each attachment point. At least one stop attached to one or more peripheral surfaces and / or guide means enabling positioning of the damper.

  Advantageously, each of the dampers is made from an elastomeric material or natural rubber.

  Desirably, each of the dampers has a hardness that is greater than or equal to 50 Shore A and less than or equal to 70 Shore A.

  According to one particular feature, the screen is a liquid crystal screen.

  The invention will be better understood and other specific characteristics and advantages will become apparent from the following description. In the following description, reference is made to the accompanying drawings.

  The general principle of the invention is based on a flat screen floating assembly, the connection between the cabinet and the screen being achieved via a monolithic damper. Thus, the present invention ensures that the overall device has excellent mechanical strength while being relatively simple to implement (simple construction characteristics and relatively easy assembly).

Desirably, each damper is connected to the screen by a rod positioned in the recess of the damper and has the advantage of being relatively simple to implement and mechanically rigid. Here, the rod is an elongated mechanical element. For example, this can be a screw or rod, which is threaded or attached to a thread that is screwed (and possibly glued) to the screen. With or without a uniform cross section and positioned in the recess of the damper.

  FIG. 1 schematically shows a rear view of a display device according to a preferred embodiment of the present invention.

The display device 1 is:
The front face 10 of the cabinet,
The rear face 12 of the cabinet,
A flat screen 11, such as an LCD type commercially available from SAMUSUNG®, preferably having a thickness of 30 to 50 mm, and
Four attachment points 13 to 16 positioned close to the corner of the screen 11,
Have

  FIG. 2 defines the attachment point 13 according to a perspective view (from the rear).

Mounting point 13 is:
A mounting and guide lug 100 associated with the front face 10;
A rear stop 120 associated with the rear surface 12,
A mounting screw 17 (a rod having a partially or fully threaded part and a head having a larger diameter), and
A damper 18 attached to the screen 11 using screws 17 and held in place with lugs 100 and rear stops 100;
Have

  Attachment points 14-16 are similar to attachment point 13 and will not be described in more detail.

  Desirably the rear stop 120 is made from a metal sheet or plastic material. The stop can in particular be part of the rear face 12 during manufacturing (such as by molding) or can be added to this rear face 12 (by screwing, gluing, welding, etc.).

  FIG. 3 shows the attachment point 13 in detail.

  The front face 10 has a plurality of screwing points 101 and a mounting lug 100 associated with the mounting point 13. The rear surface 12 has a plurality of screw lugs 121 and rear stops 120 associated with the attachment points 13 (preferably there are two screw lugs 121 and two screw points 101 associated with each corner of the cabinet. The screw fastening points and lugs are on each side close to the corner as shown in Fig. 2.) The rear face 12 and the front face 10 are rigid using the screw lugs 121. So that they are held together. In each lug 121, a screw (not shown in FIG. 3 for clarity) is screwed to a screw fastening point 101 where the screwing lug 121 is applied.

  FIG. 4 is a cross-sectional view of the attachment point 13.

  The damper 18 is preferably made from a single monolithic structure, reducing costs and facilitating its manufacture and assembly of attachment points. The damper 18 has a damping material, preferably having a hardness of 50 to 70 Shore A. The material of the damper 18 is, for example, of the type of SEBS (styrene ethylene butylene styrene), preferably an elastomer or natural rubber (non-natural rubber is an elastomer).

  The damper 18 has a recess that allows the screw 17 to be screwed onto the screen 11, and the screw axis and recess coincide with the XX 'direction. Further, ZZ 'is an axis perpendicular to the rear stop 120, and YY' is a direction perpendicular to XX 'and ZZ'. The screw 17 has a threaded cylindrical portion 171 and a head 170 having a larger diameter than the cylindrical portion. In order to hold the damper 18 on the screen without being squeezed or slightly squeezed, the rivet 19 can be designed to limit the movement of the screw 17 while at the same time ensuring good support of the damper 18; The screw head 170 is applied to the tip without the rivet 19 head. The rivet body 190 is received in the recess of the damper, and its head 191 (or bead) is received in a small hole in the damper 18 close to the screen 11. The damper 18 desirably has a recess on the opposite side of the screen 11 to allow accommodation for the screw head 170 without a head protruding from the damper 18. Thus, the size of the attachment point is limited (advantageously, the head 170 of the screw 17 is flush with the outer surface of the damper 18 facing the screen along the axis XX '). According to one variant of the invention, the rivet 19 is replaced by a cylindrical tube (corresponding to a headless rivet) housed in the recess of the damper. In this case, the damper does not have a hollow designed to accommodate the rivet head. According to another variant of the invention, the screw 17 has a threaded part that can be screwed in and a length corresponding to the dimensions of the rivet body 19 to limit the movement of the screw during the screwing operation. Having an unthreaded part.

  The damper 18 is desirably cylindrical and has a groove 181 that surrounds it on a lateral periphery. The groove 181 allows the guide lug 100 to pass through and the damper 18 to be positioned (or centered). According to one variant of the invention, the damper has a non-cylindrical shape (such as a cube) and has grooves on one or more sides.

  Furthermore, the rear stop 120 is applied against the peripheral surface of the damper 18 and thus ensures its retention. The front surface 10 and the rear surface 12 are attached to each other and the damper is held between the rear stop 120 and the guide lug 100.

  Therefore, the damper 18 allows the screen 11 to be held in a balanced position and is therefore not subjected to stress in the XX ', YY' and ZZ 'directions. Furthermore, in the case of an impact or pressure on the screen (eg, the pressure by the user if the screen is tactile), the damper may cause the screen 11 to be in one of the XX ′, YY ′, and ZZ ′ directions. Or allow it to move slightly above and thus limit or cancel the stress on the screen 11. Thus, the risk of breakage of the screen 11 or the deterioration in the display quality of the screen 11 is reduced. In general, the present invention allows mechanical and / or acoustic isolation between the cabinet and the screen.

  As an example, the outer diameter of the damper 18 desirably has 15 to 30 mm, for example equal to 23.1 mm. The thickness is preferably 6 to 20 mm, for example 12.50 mm. The outer diameter of the groove 181 is desirably 12 to 20 mm, for example, 14.1 mm. Its thickness is preferably between 2 and 5 mm, and after being adapted is equivalent to eg 3.29 mm (equivalent to the thickness of the guide lug 100) (advantageously, when the damper is adapted, About 0.5 mm is slightly squeezed in each direction XX ′, YY ′, and ZZ ′). The guide lug 100 has a depth at which its tip contacts the lower part 182 of the groove 181 by leaving a suitable clearance of 0.5 mm between the screen 11 and the front face 10 when the system is in a balanced position. (Depth). The external length of the guide lug desirably has a length of 24 to 28 mm, for example, as shown in the side view of FIG. A space of 2.3 mm can be left between 120 and 120. The distance between the outer parts of the lug 100 is desirably 20 to 60 mm, for example equal to 30.1 mm. The felt strap 40 is placed between the periphery of the screen 11 and the front surface 10 to prevent dust from entering the device 1. This strap is generally sufficiently flexible so that it does not interfere with slight lateral movement or movement in the depth of the screen 11 relative to the front face. The outer diameter of the screw 17 is 4 mm and matches the inner diameter of the recess of the screen 11. The manufacturer of the screen 11 determines this diameter and the screw 17 (screw thread and diameter) is, of course, selected according to the screen 11 to avoid modification of the standard screen 11. The inner diameter of the recess of the damper 18 is 5 mm. The rivet 19 fills a space between the inner diameter of the recess and the screen 17. The dimensions given as an example allow the movement of the screen 11 relative to the cabinet of the device 1 having a value that is +/− 0.5 mm along ZZ ′ or YY ′, or +/− 1 mm along XX ′. .

  Of course, such dimensions are given for illustrative purposes only, and in accordance with the present invention, the dimensions of the damper, stop, guide lug, rivet, and screw may be mechanical stress, desired damping. And can be adapted according to maximum tolerance. In general, the larger the damper dimensions, the greater the damping and resistance on the relative movement of the screen relative to the cabinet. On the other hand, it is desirable to limit the size of the attachment point element to limit the size and cost of the attachment point.

  The screw desirably has a head that allows easy screw tightening with appropriate tools (screwdriver, Allen key, Torx key, etc.). According to one variant of the invention, the damper does not have a recess that holds the screw head. According to this variant, the screw head can be of any kind. (The head must be suitable to be screwed using a screwdriver or a wrench key, or similarly, a hexagonal head is screwed using, for example, a socket wrench. According to another variant, the screw (with a retaining ring finally allowing the rod to be blocked and restricting the movement of the rod relative to the screen) It is replaced by a rod that is screwed and / or glued to and the nut is screwed onto this rod (integrated into a given recess in the damper or against the damper) Screwed).

  FIG. 6 shows a side view of the mounting lug 100 (plane along axis XX ′).

  The mounting lug 100 has a hollow part 1000, a chamfered part 1001, and a sprayed part 1002, which are placed with respect to a hollow 182 of the groove 131, and a damper 18. Allows insertion of The lug also has two edge portions 1005 and 1006. The edge is thicker than the rest of the mounting lug 100 and ensures effective stiffness of the lug 100. Desirably, the edges 1005 and 1006 are tapered (the taper is significantly parallel to the taper of the portion 1002) and have a slope at its free tip as shown in FIG. To facilitate the insertion of the damper 18 when connected to the side (the side of the damper 18 can slide on this slope during the manufacturing stage. The damper 18 is edged when in place. Do not touch 1005 and 1006). The mounting lug 100 can be molded to the front surface 10 or is attached to the outer portion 103 of the front surface 10 in any way (adhesion, screwing). The lug comprises, for example, a plastic or metal material.

The assembly of the screen 11 of the device is therefore relatively easy and economical:
-During the first stage, both the damper 18 and the rivet 19 are screwed onto the screen 11 and the felt strap 40 is put in place.
Subsequently, the screen 11 is positioned on the front face 10 (eg in the horizontal direction) (this movement is facilitated by the shape of the lug 100), and
The rear surface 12 is positioned and attached to the front surface 10.

  Thus, the present invention not only enables the use of relatively simple parts, but also allows easy (and therefore economical) assembly of the display device.

  FIG. 7 presents a display device 7 according to another particular embodiment of the invention.

  The device 7 has a front surface 72, a rear surface 70 and a screen 11. The screen may have an axis ZZ ′ (axis perpendicular to the screen), XX ′ (axis along the screen width), and / or YY ′ (along the height of the screen 11 and relative to the axes ZZ ′ and XX ′). Can move slightly during impact, pressure and / or vibration along a vertical axis.

  Common elements of devices 1 and 7 have the same names and reference numerals and will not be described in further detail.

  The surfaces that are respectively forward 72 and rear 70 have attachment points 720 to 724 and attachment points 702 to 704 distributed around the periphery, respectively, to allow attachment of the rear surface 70 onto the front surface 72.

  The four dampers 73 and 74 are attached to the screen 11 and are positioned close to the corner portion of the screen 11. The rear surface 70 has stops 701 or 702 that limit movement along the axes XX 'and YY' opposite the dampers 73 and 74, respectively.

  FIG. 8 illustrates in more detail the attachment points associated with the damper 74. Other attachment points associated with the damper of the device 7 are similar and will not be described in further detail.

  The damper 74 has a monolithic structure and has a damping material having a hardness of 50 to 70 Shore A. The material of the damper 74 is, for example, a type of SEBS (styrene ethylene butylene styrene), and is preferably an elastomer or natural rubber. The damper has a cylindrical shape with an internal recess in the longitudinal direction, and the peripheral surface is lubricated (ie, has no groove). For illustration purposes, the inner and outer diameters are equivalent to 4 mm and 23.1 mm. According to one variant of the invention, the damper has a non-cylindrical shape (for example a cube or hexagon).

  The screw 80 is screwed onto the screen 11. The screw has a threaded portion 800 and a head 801 that receives in a recess in the damper 74. The length of the head 801 is smaller than the depth of the recess by about 2 mm. In general, the length of the head 801 is close to the depth of the recess and provides excellent support for the damper 74, but preferably the stop 702 to allow movement of the screen in the direction XX ′. Provide a spacing that is greater than or equal to 1 mm in between.

  The front surface 72 has a stop 726 that limits the movement of the damper 74 in the directions ZZ 'and YY'. Desirably, the stop 726 has a flat or semi-cylindrical portion 7261 applied to the damper 74, thus limiting its movement in the ZZ 'direction. The stop also has a flat portion 7260 (or a semi-cylindrical shape continuous to the portion 7261) that restricts the movement of the damper 74 about the YY 'direction. According to one particular embodiment, the portion 7260 has a shape that tapers outward to facilitate positioning of the screen 11 on the front surface 72 during assembly.

  The rear surface 70 can have a stop 702. The stops themselves limit the movement of the damper 74 in the XX ′ direction by a combination of the effects of the stops associated with the dampers of the device 7 (two stops 702 (701) move right (left) according to FIG. 7). Flat) 7021 and flat or semi-cylindrical portions that limit the movement of the damper 74 in the ZZ ′ direction.

The assembly of the screen 11 of the device 7 is also relatively easy and economical:
-During the first stage, the screw 80 and the damper 74 are positioned on the screen 11 and the felt strap 40 is installed.
The screen 11 is then positioned on the front face 72.
The rear surface 70 is positioned and attached to the front surface 72 (hence the rear and front surfaces are integral).

  According to one variant of the invention, the portion 7260 of the stop 726 has been reduced (reduced) or replaced by a stop attached to the stop 702 (to protect to protect the guide function) and the axis YY Limit the movement of the damper along the 'and guide the positioning of the rear face when assembled.

  According to one variant of the invention, the stops 702 and 706 are associated with only one of the front surface 72 or the rear surface 70. In this case, the stop may form two separate parts or one single monolithic structure part (U-shaped). According to this variant, preferably the stop is positioned on a damper already attached to the screen relative to the corresponding surface (such as by screwing, gluing or welding) as well as this surface. Is attached before it is attached to the other side of the cabinet.

  Of course, the present invention is not limited to the embodiments described above.

  In particular, those skilled in the art will recognize that multiple screen attachment points are not necessarily equivalent to 4, but equivalent to 3, 5 or more (especially depending on screen dimensions, screen type, manufacturer, etc.). And / or a device having a position that is not necessarily lateral (eg on or below the screen) can be implemented.

  Furthermore, the invention is not restricted to the mounting of LCD type screens, but concerns all flat screens having a thickness of 30-50 mm in particular.

  The invention also relates to a flat screen display device. In the device, the damper is attached to the cabinet (front and / or rear face) and the stops and / or guides are screwed onto the screen to limit movement in the XX ′, YY ′ and ZZ ′ directions. It is tightened (guides or stops limit vertical movement on the screen; stops limit movement in other directions by combining the effects of multiple dampers if possible).

  The present invention equally relates to a device in which the damper is connected to the screen by mechanical means (especially by a plurality of rods) or other means such as gluing, rather than by rods or stops.

FIG. 3 is a very schematic front view of a display device according to a preferred embodiment of the present invention. FIG. 2 is a schematic diagram of attachment points of a flat screen to the cabinet of the apparatus shown in FIG. 1. The attachment points in FIG. 2 are illustrated in more detail. It is sectional drawing of the attachment point shown in FIG. It is a side view of the attachment point in FIG. Figure 3 illustrates a guide lug associated with a cabinet at the attachment point in Figure 2; Fig. 2 schematically shows a plan view of a display device according to one variant of the invention. It is sectional drawing of the attachment point of the apparatus in FIG.

Claims (14)

A display device comprising a flat screen, a cabinet, and a plurality of mounting elements for mounting the screen to the cabinet, each having a plurality of mounting elements each having a damper,
Each of the dampers has a monolithic structure,
The screen is connected to the cabinet using the damper to allow relative movement of the screen in all directions relative to the cabinet;
Each damper is a rod attached to the screen and has a recess in which a rod is positioned to ensure a mechanical connection between the damper and the screen;
The cabinet is a guide means formed on the cabinet, and is a guide means into which the damper is inserted, and a recessed portion that enters a groove formed in the damper to enable positioning of the damper. Having edge-thickening guide means thicker than other parts,
apparatus. The rod has a cylindrical portion and a head having a larger diameter than the cylindrical portion.
The apparatus of claim 1. The head is housed in the damper;
The apparatus of claim 2. The device has at least partly a tubular and rigid part;
The tubular and rigid portion is inserted between the cylindrical portion of the rod and the damper to limit movement of the rod, and the head of the rod is against one end of the tubular and rigid portion. Guessed,
It is characterized by
The apparatus according to claim 2 or 3. The portion is a rivet, and the head of the rivet opposite the one end is attached to the screen,
The apparatus of claim 4. The rod has a cylindrical portion and does not have a head having a diameter larger than the diameter of the cylindrical portion ;
The apparatus of claim 1. Each damper is cylindrical, characterized in that
Apparatus according to any one of claims 1 to 6. At least one groove is provided on a side peripheral surface of the damper,
The device according to claim 1. The cabinet has at least one stop attached to a peripheral surface of the damper included in each of the attachment elements,
Apparatus according to any one of claims 1 to 8. The cabinet has a front surface and a rear surface integrated together,
For each of the attachment elements, at least one of the front surface and the rear surface has at least one stop attached to one or more peripheral surfaces of the damper included in each of the attachment elements. Have
It is characterized by
Apparatus according to any one of claims 1 to 8. The cabinet has a front surface and a rear surface integrated together,
For each of the attachment elements, at least one of the front surface and the rear surface has the guide means that enables positioning of the damper.
It is characterized by
The device according to claim 1. Each of the dampers is made from an elastomeric material or natural rubber,
12. A device according to any one of the preceding claims. Each of the dampers has a hardness of 50 Shore A or more and 70 Shore A or less,
Device according to any one of the preceding claims. The screen is a liquid crystal display screen,
14. Apparatus according to any one of claims 1 to 13.

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