CN217386574U - Magnetic adsorption assembly and display device - Google Patents

Abstract

The utility model belongs to the technical field of show, a magnetism adsorbs subassembly and display device is specifically disclosed. The magnetic adsorption component comprises a frame, a magnetic adsorption piece and a pressure sensor, wherein the frame is provided with an accommodating cavity and an adsorption side wall for adsorbing the writing pen, and the accommodating cavity is provided with a mounting cavity wall adjacent to the adsorption side wall; the magnetic part is arranged in the accommodating cavity and is attached to or adjacent to the wall of the mounting cavity; pressure sensor fixed mounting just is located the one side that the piece orientation was inhaled or was kept away from the absorption lateral wall to magnetism in holding the chamber, and pressure sensor's detection face and magnetism are inhaled the piece laminating. The display device comprises the magnetic adsorption component. The utility model discloses a magnetism adsorbs subassembly and display device, when can realizing the absorbent of pen, improves and detects the pen and carry the reliability of a state.

Description

Magnetic adsorption assembly and display device

Technical Field

The utility model belongs to the technical field of show, a magnetism adsorbs subassembly and display device is specifically disclosed.

Background

With the development of science and technology, interactive display devices such as intelligent blackboards or business display panels are increasingly popular with people, and are widely used in education and teaching or conferences by gradually replacing traditional blackboards or whiteboards. The writing pen is the important component of mutual display device information input, for making things convenient for writing pen and mutual display device's supporting use, is provided with magnetism usually in current mutual display device's the frame and inhales the piece, and writing pen accessible magnetism is inhaled a magnetism and is inhaled and adsorb on the frame for writing pen can directly adsorb when the non-use on the merchant shows the flat board, gets and puts the convenience.

Since the interactive display device needs to have a writing mode and a display mode, in order to automatically switch the interactive display device to the writing mode, whether the interactive display device needs to be switched to the writing mode needs to be determined by detecting whether the writing pen is attached to the frame, or whether the interactive display device needs to be automatically started by determining whether the writing pen is attached to the interactive display device. The existing interactive display device is usually provided with a Hall sensor at a position close to a magnetic suction piece in a frame, and detects whether a writing pen is adsorbed on the frame or not through the change of magnetic flux caused by the fact that the writing pen is adsorbed on the frame.

However, when the hall sensor is used for detecting the magnetic flux, the detection result is easily interfered by external electronic equipment, and if a user approaches the hall sensor, a mobile phone carried in a pocket of the user can interfere the detection result of the hall sensor if the mobile phone approaches the detection position, so that the accuracy and reliability of detection are affected, namely, the state of the writing pen cannot be accurately detected, and the normal use of the interactive display device is affected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a magnetism adsorbs subassembly to when realizing the magnetism to the writing pen inhale the absorption, improve the detection reliability to writing pen adsorption state.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a magnetic attachment assembly comprising:

the frame is provided with a containing cavity and an adsorption side wall for adsorbing a writing pen, and the containing cavity is provided with a mounting cavity wall adjacent to the adsorption side wall;

the magnetic suction piece is arranged in the accommodating cavity and is attached to or adjacent to the wall of the installation cavity;

pressure sensor, fixed mounting in hold in the chamber and be located inhale the piece orientation or keep away from inhale one side of lateral wall, pressure sensor's detection face with inhale the piece laminating of magnetism.

The beneficial effects of the utility model reside in that:

the utility model provides a magnetic adsorption component, when can realizing the absorption of writing pen on the frame and getting and put, can also change the magnetic suction piece and exert the pressure effect to pressure sensor through the writing pen reverse acting force to the magnetic suction piece, thereby make the pressure value that pressure sensor detected can produce obvious change according to whether the writing pen adsorbs on adsorbing the lateral wall, thereby can judge accurately according to the pressure value that pressure sensor detected whether the writing pen adsorbs on the frame, accurate reliability is high; simultaneously, this kind of magnetism adsorbs setting of subassembly, when outside electronic equipment is close to magnetism and inhales the piece, though magnetism spare or metalwork among the outside electronic equipment can inhale the piece and produce certain influence to magnetism, but because outside electronic equipment can not adsorb on the frame, it is less to inhale the reverse effort that the piece was applyed to magnetism to the change of pressure sensor's detected value is less, can get rid of the influence of external disturbance through the predetermined threshold value of pressure sensor's detected value betterly, and the interference killing feature is strong.

Another object of the present invention is to provide a display device to improve the reliability of the display device and the experience of the use.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a display device comprises the magnetic adsorption component.

The beneficial effects of the utility model reside in that:

the utility model provides a display device, through adopting foretell magnetism to adsorb the subassembly, can realize writing pen when the absorption on display device, can accurately detect whether the writing pen adsorbs on display device to improve the control accuracy and the control reliability to display device operation, improve display device's use reliability and use experience.

Drawings

Fig. 1 is a schematic structural diagram of a magnetic adsorption assembly and a writing pen provided by an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the structure of FIG. 1;

FIG. 3 is a schematic view of a portion of a magnetic attraction assembly provided by an embodiment of the present invention;

fig. 4 is a schematic diagram of a split structure of the structure in fig. 3.

1. A magnetic member; 2. a pressure sensor; 3. mounting a bracket; 31. an installation plate portion; 311. mounting grooves; 312. Positioning a groove; 313. a wiring groove; 314. avoiding the mouth; 315. a guide plate portion; 3151. a guide slope; 32. A fixed plate portion; 321. a connecting through hole; 322. lightening holes; 33. a connecting plate portion; 34. a reinforcing rib portion; 4. A frame; 41. an adsorption side wall; 42. an accommodating chamber; 421. installing a cavity wall; 43. installing a side wall; 431. an installation port; 432. a threaded hole; 5. a writing pen.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1, the embodiment of the present invention provides an interactive display device, which includes a writing pen 5 and a display device, the display device has writing and displaying functions, and can display images, characters and videos, and also can receive the writing content of the writing pen 5 on the display screen, so as to realize the interaction between the user and the display device. The utility model provides a display device can show for the merchant and dull and stereotyped, wisdom blackboard etc. and it can be applied to in scenes such as video conference, on-the-spot meeting, education and teaching.

Display device includes display screen, backlight unit, touch-control module and magnetism adsorbs subassembly etc. and the display screen is used for showing, and backlight unit is used for providing the backlight for the display screen, and touch-control module is used for realizing the receipt and the conversion that writing pen 5 wrote information, and magnetism adsorbs the subassembly and is used for realizing the absorption of writing pen 5 on display device and detects writing pen 5's adsorption state. Wherein, prior art can be referred to display screen, backlight unit and touch module's structure, this is not the utility model discloses a key, here is no longer repeated.

As shown in fig. 2, the magnetic attraction component comprises a frame 4, a magnetic attraction piece 1 and a pressure sensor 2. The frame 4 is arranged around the display screen and used for supporting and protecting the display screen, the frame 4 is provided with an accommodating cavity 42, the frame 4 is provided with an adsorption side wall 41 for adsorbing the writing pen 5, and the accommodating cavity 42 is provided with a mounting cavity wall 421 adjacent to the adsorption side wall 41; magnetic part 1 is installed in holding chamber 42, and magnetic part 1 laminating or be close to installation chamber wall 421, and pressure sensor 2 fixed mounting just is located magnetic part 1 towards or keep away from the one side of adsorbing lateral wall 41 in holding chamber 42, and pressure sensor 2's detection face and magnetic part 1 laminating.

Be provided with in the pen 5 and inhale the adsorbed by the piece of 1 magnetism of inhaling by magnetism, the adsorbed piece can be for metalwork or magnet, and when pen 5 was close to and adsorbs lateral wall 41, the adsorbed piece is inhaled the effect of inhaling down and is adsorbed on adsorbing lateral wall 41 by magnetism of 1, can realize the absorption of pen 5 on frame 4 from this. Meanwhile, when the writing pen 5 is adsorbed on the adsorption side wall 41, due to the reverse acting force of the adsorbed member on the magnetic member 1, the magnetic member 1 is subjected to a reverse magnetic attraction force towards the adsorption side wall 41, so that the magnetic member 1 has a movement tendency towards the adsorption side wall 41; because the detection face of pressure sensor 2 is inhaled with magnetism and is inhaled one side laminating that piece 1 is close to or keeps away from absorption lateral wall 41, make from this when writing pen 5 switches between adsorption state and non-adsorption state, magnetism inhale the pressure that piece 1 was used in on the detection face and produce the change, and then make the pressure value that pressure sensor 2 detected produce the change.

That is, the magnetic adsorption assembly provided in this embodiment can realize the adsorption and picking and placing of the writing pen 5 on the frame 4, and can change the pressure action applied to the pressure sensor 2 by the magnetic adsorption member 1 through the reverse acting force of the writing pen 5 on the magnetic adsorption member 1, so that the pressure value detected by the pressure sensor 2 can be obviously changed according to whether the writing pen 5 is adsorbed on the adsorption side wall 41, and thus whether the writing pen 5 is adsorbed on the frame 4 can be accurately determined according to the pressure value detected by the pressure sensor 2, and the accuracy and reliability are high; simultaneously, this kind of magnetism adsorbs setting of subassembly, when external electronic equipment is close to magnetism and inhales a 1, though magnetism spare or metalwork among the external electronic equipment can inhale a 1 production certain influence of magnetism, but because external electronic equipment can not adsorb on frame 4, it is less to inhale the reverse effort that a 1 was applyed of magnetism, thereby it is less to the change of pressure sensor 2's detected value, can get rid of the influence of external disturbance through the predetermined threshold value of pressure sensor 2's detected value betterly, the interference killing feature is strong.

The embodiment of the utility model provides a display device, through adopting foretell magnetism to adsorb the subassembly, can realize writing pen 5 when the absorption on display device, can accurately detect whether writing pen 5 adsorbs on display device to improve the control accuracy and the control reliability to display device operation, improve display device's use reliability and use experience.

In the embodiment, the pressure sensor 2 is disposed on a side of the magnetic attraction piece 1 away from the attraction side wall 41, and when the writing pen 5 is attracted to the attraction side wall 41, the pressure sensor 2 has a first pressure value; when the writing pen 5 is detached from the suction sidewall 41, the pressure sensor 2 has a second pressure value, and the first pressure value is smaller than the second pressure value. When the writing pen 5 is detached from the adsorption side wall 41 and the external electronic device is close to the adsorption side wall 41, the pressure value detected by the pressure sensor 2 is between the first pressure value and the second pressure value; when the writing pen 5 is attached to the attaching sidewall 41 and the external electronic device is close to the attaching sidewall 41, the pressure value detected by the pressure sensor 2 is smaller than the first pressure value. That is, when the pressure value detected by the pressure sensor 2 is less than or equal to the first pressure value, it indicates that the writing pen 5 is attached to the adsorption sidewall 41, and the writing pen 5 is in an unused state; when the pressure detected by the pressure sensor is greater than or equal to the second pressure sensor 2, the writing pen 5 is detached from the suction sidewall 41, and the writing pen 5 is in a use state. Meanwhile, a preset threshold value between the first pressure value and the second pressure value may be set, so that when the pressure value detected by the pressure sensor 2 is greater than or equal to the preset threshold value, it may be determined that the writing pen 5 is not adsorbed on the adsorption sidewall 41.

As shown in fig. 2-4, for facilitating the installation of the magnetic attraction piece 1 and the pressure sensor 2, the magnetic attraction assembly further comprises a mounting bracket 3, at least part of the mounting bracket 3 extends into the accommodating cavity 42 of the china, the mounting bracket 3 is detachably connected with the frame 4, and the magnetic attraction piece 1 and the pressure sensor 2 can be detachably mounted on the mounting bracket 3, so that the magnetic attraction piece 1 and the pressure sensor 2 can be conveniently detached and mounted, and the magnetic attraction piece 1 and the pressure sensor 2 can be conveniently replaced.

Preferably, the mounting bracket 3 has a mounting groove 311 opening toward the mounting cavity wall 421, the magnetic member 1 and the pressure sensor 2 are both disposed in the mounting groove 311, and the pressure sensor 2 is located between the magnetic member 1 and the bottom of the mounting groove 311. The setting of mounting groove 311 is favorable to providing the location for the installation of the piece 1 is inhaled to magnetism, improves the dismouting convenience of the piece 1 of inhaling magnetism.

For facilitating the connection of the mounting bracket 3 with the frame 4 and the magnetic attraction piece 1, the mounting bracket 3 includes a mounting plate portion 31 and a fixing seat portion which are vertically connected, the mounting plate portion 31 is parallel to and spaced from the attraction side wall 41, and the mounting plate portion 31 is provided with the mounting groove 311 towards one side of the attraction side wall 41. The fixing seat portion is located on one side of the installation plate portion 31 departing from the notch of the installation groove 311, and the fixing seat portion is detachably connected with the frame 4. The magnetic attraction piece 1 and the fixing seat portion are respectively arranged on two opposite sides of the installation plate portion 31, so that the structure of the installation support 3 can be simplified, and the assembly convenience of the magnetic attraction component is further improved.

Preferably, magnetism is inhaled piece 1 and is rectangular platelike structure, and the length direction who inhales piece 1 is unanimous with the length direction who adsorbs lateral wall 41 to adapt to the shape of pen 5 better, improve the adsorption stability of pen 5 on frame 4.

For the stability that sets up of improvement magnetism piece 1 in mounting groove 311, the groove width of mounting groove 311 equals the width of magnetism piece 1, and the groove length of mounting groove 311 slightly is greater than the length of magnetism piece 1 to when making magnetism piece 1 can inlay and establish in mounting groove 311, also make things convenient for magnetism to inhale getting of piece 1 in mounting groove 311 and put.

Further, in order to improve the convenience of taking and placing the magnetic element 1 in the mounting groove 311, the mounting groove 311 is provided with an avoiding opening 314 along the two side walls in the width direction, the avoiding opening 314 penetrates through the end surface of the opening of the mounting groove 311, so that the two opposite side surfaces of the magnetic element 1 are exposed, the magnetic element 1 can be taken out or placed into the mounting groove 311 by operating the two opposite sides of the magnetic element 1. Meanwhile, the arrangement of the avoiding port 314 is also beneficial to reducing the weight of the mounting bracket 3, thereby reducing the overall weight of the magnetic adsorption component and lowering the material cost. Further, the bottom edge of the avoiding opening 314 is flush with the bottom of the mounting groove 311, so that the processing is simplified, and the magnetic part 1 is convenient to take and place.

In order to improve the smoothness of the magnetic element 1 entering the mounting groove 311, the mounting plate portion 31 is formed with a guiding plate portion 315 disposed around the mounting groove 311, the guiding plate portion 315 is perpendicular to the bottom of the mounting groove 311, and a guiding inclined surface 3151 is disposed on an inner side of one end of the guiding plate portion 315 away from the bottom of the mounting groove 311, the guiding inclined surface 3151 is used for guiding the magnetic element 1 to enter the mounting groove 311.

In the present embodiment, the guide plate portions 315 on both sides in the groove width direction of the mounting groove 311 are located in the escape opening 314, and the inner surface of the guide plate portion 315 in the escape opening 314 is preferably flush with the corresponding groove wall. The guide plate portions 315 on both sides in the groove length direction of the mounting groove 311 are located near the corresponding side groove wall, and are preferably vertically connected to the corresponding side groove wall.

For the precision that improves pressure detection and the convenience that sets up that improves pressure sensor 2, pressure sensor 2 is preferred to be film pressure sensor, and film pressure sensor size is less, and the precision is higher, and realize easily with the laminating of magnetism piece 1, the convenient setting.

For making things convenient for pressure sensor 2's location and installation, constant head tank 312 has been seted up to the tank bottom of mounting groove 311, and pressure sensor 2 sets up in constant head tank 312, and the thickness of constant head tank 312 slightly is less than pressure sensor 2's thickness to make ground magnetism inhale piece 1 and install when mounting groove 311, magnetism inhale piece 1 and can exert pretension pressure to pressure, guarantee magnetism inhale piece 1 and pressure sensor 2 use and can be in the state of laminating contact all the time, guarantee pressure sensor 2's detection reliability.

Further, the pressure sensor 2 can be adhered to the bottom of the positioning groove 312, so that the pressure sensor 2 is prevented from being separated from the positioning groove 312, and the stability of the pressure sensor 2 is improved.

Furthermore, a wiring groove 313 is formed at the bottom of the mounting groove 311, the wiring groove 313 is communicated with the positioning groove 312 and penetrates through one side wall of the mounting plate part 31, and a connecting wire part of the pressure sensor 2 is positioned in the wiring groove 313, so that the connecting wire of the ground pressure sensor 2 can be led out to the outside of the mounting bracket 3 through the wiring groove 313, and the wiring convenience of the pressure sensor 2 is improved.

A side of the frame 4 is provided with a mounting opening 431 communicated with the accommodating cavity 42, one end of the mounting bracket 3 provided with the magnetic part 1 can enter and exit the accommodating cavity 42 through the mounting opening 431, and the other end of the mounting bracket 3 can be detachably connected with the frame 4. The setting of installing port 431 can make things convenient for installing support 3 to stretch into and hold the chamber 42 to improve the installation of magnetism piece 1 in holding the chamber 42 and dismantle the convenience.

Specifically, the fixing seat portion includes a fixing plate portion 32 and a connecting plate portion 33 that are vertically connected, the fixing plate portion 32 being disposed opposite to and spaced apart from the mounting plate portion 31, the connecting plate portion 33 being vertically connected between the fixing plate portion 32 and the mounting plate portion 31. The bezel 4 has a mounting side wall 43 opposed to the suction side wall 41, the mounting opening 431 is opened in the mounting side wall 43, and the fixing plate portion 32 is attached to and detachably connected to the mounting side wall 43. This kind of connected mode of fixed seat portion can improve the convenience of being connected of frame 4 and installing support 3, and simplifies the structure and the processing of installing support 3.

Further, the fixing plate portion 32 is exposed outside the mounting side wall 43 and detachably connected to the mounting side wall 43, so as to further improve the convenience of mounting and dismounting the mounting bracket 3.

The fixing plate portion 32 and the frame 4 are preferably in threaded connection, the connecting through hole 321 is formed in the fixing plate portion 32, the threaded hole 432 is formed in the frame 4, the fixing plate portion 32 and the frame 4 are connected through a threaded part penetrating through the connecting through hole 321 and the threaded hole 432, and connection stability is high. In other embodiments, the connection between the fixing plate portion 32 and the frame 4 may be a snap connection. Further, the connecting through hole 321 is preferably a counter-sunk hole, so that the threaded piece is prevented from being exposed, and the overall attractiveness of the magnetic adsorption assembly is improved.

In order to improve the structural strength of the mounting bracket 3, a reinforcing rib portion 34 is provided between the connecting plate portion 33 and the mounting plate portion 31, and a plurality of reinforcing rib portions 34 are preferably provided at intervals along the longitudinal direction of the magnetic member 1. The fixing plate portion 32 and/or the mounting plate portion 31 are preferably provided with lightening holes 322 to lighten the overall weight of the mounting bracket 3.

Preferably, in this embodiment, a gap is formed between the magnetic member 1 and the cavity wall corresponding to the adsorption sidewall 41, so as to prevent the magnetic member 1 from being directly adsorbed on the iron frame 4, which may cause difficulty in picking and placing the magnetic member.

Further, the position that adsorbs lateral wall 41 corresponds magnetism and inhale piece 1 is provided with the absorption sign to the position that the pen 5 adsorbs is write in the instruction, makes pen 5 can just inhale piece 1 by the absorption to magnetism, guarantees the absorption stability and the reliability of pen 5 when being adsorbed.

It should be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (9)

1. A magnetic attachment assembly, comprising:

the pen holder comprises a frame (4), wherein the frame (4) is provided with a containing cavity (42) and an adsorption side wall (41) for adsorbing a writing pen (5), and the containing cavity (42) is provided with a mounting cavity wall (421) adjacent to the adsorption side wall (41);

the magnetic suction piece (1) is arranged in the accommodating cavity (42), and the magnetic suction piece (1) is attached to or adjacent to the installation cavity wall (421);

pressure sensor (2), fixed mounting in hold in the chamber (42) and be located inhale magnetism piece (1) orientation or keep away from adsorb one side of lateral wall (41), pressure sensor's (2) detection face with inhale magnetism and inhale piece (1) laminating.

2. A magnetic attraction assembly according to claim 1, characterized in that it further comprises a mounting bracket (3), the mounting bracket (3) being at least partially located in the accommodation chamber (42), the mounting bracket (3) being detachably connected to the frame (4), the magnetic attraction member (1) being detachably connected to the mounting bracket (3), the mounting bracket (3) being made of a non-magnetically permeable material.

3. A magnetic attraction assembly according to claim 2 characterized in that the mounting bracket (3) has a mounting slot (311) opening towards the mounting cavity wall (421), the magnetic element (1) being embedded in the mounting slot (311).

4. A magnetic attraction member as claimed in claim 3, characterized in that the pressure sensor (2) is interposed between the bottom of the mounting groove (311) and the magnetic attraction member (1).

5. The magnetic adsorption component of claim 4, wherein a positioning groove (312) is formed at the bottom of the mounting groove (311), the pressure sensor (2) is located in the positioning groove (312), and the magnetic adsorption piece (1) is pressed against the detection surface of the pressure sensor (2);

and/or, all link up on the relative both sides cell wall of mounting groove (311) and seted up and dodge mouth (314), dodge mouth (314) and link up mounting groove (311) notch place terminal surface.

6. The magnetic adsorption component of claim 5, wherein a wiring groove (313) is formed in the groove bottom of the mounting groove (311), the wiring groove (313) is communicated with the positioning groove (312) and penetrates through the outer side wall of one side of the mounting bracket (3), and a connecting wire of the pressure sensor (2) is located in the wiring groove (313).

7. The magnetic adsorption component of any one of claims 2 to 6, wherein a mounting port (431) communicated with the accommodating cavity (42) is formed in one side surface of the frame (4), one end of the magnetic adsorption piece (1) mounted on the mounting bracket (3) can pass through the mounting port (431) to enter and exit the accommodating cavity (42), and the other end of the mounting bracket (3) is detachably connected with the frame (4).

8. The magnetic attraction assembly according to claim 7, characterized in that the mounting bracket (3) has a mounting side wall (43) opposite to the attraction side wall (41), the mounting side wall (43) being provided with the mounting opening (431);

installing support (3) including installation board portion (31) and the fixed board portion (32) that link to each other and the interval sets up relatively, magnetism inhale piece (1) set up in installation board portion (31) is kept away from one side of fixed board portion (32), the surface laminating and the connection of fixed board portion (32) and installation lateral wall (43).

9. A display device comprising the magnetic attraction assembly of any one of claims 1-8.

Images