Rear cover compression display screen

Abstract

The utility model discloses a rear cover compression display screen, which belongs to the technical field of household appliance display screens, and comprises a front panel, a display module and a rear cover, the display module is arranged between the front panel and the rear cover, and the display module is tightly connected with the front panel through the rear cover and a fastening component. The fastening assembly comprises a connecting column arranged on the back face of the front panel and a groove with holes formed in the rear cover, and the rear cover and the front panel are fixed through screws and the fastening assembly. And the connecting column penetrates through the display module and is in contact with the rear cover. In order to be matched with the rear cover for use, the connecting column is arranged on the front panel, the groove with the hole is formed in the rear cover, and the front panel and the rear cover are fixed through screws, so that installation is convenient. When the rear cover and the front panel are fixed, the display module is fixed through the pressing protrusions, and the display module is tightly attached to the front panel and makes seamless contact with the front panel, so that the touch control stability and sensitivity are improved, no bubbles exist, and the display uniformity and the display effect of the display screen are improved.

Description

Technical Field

[0001] This utility model belongs to the field of display screen technology, specifically relating to a back cover pressing display screen. Background Technology

[0002] Depending on the usage requirements, the display screens of electrical appliances can be structured in the following ways: The first type includes a display module, panel, and display module bracket. The display module bracket offers high stability and is suitable for appliances with ample space; however, the bracket is expensive and takes up a lot of space. The second type is an ultra-thin display module. This type has no internal bracket support and is installed inside the panel, secured by clips or screws. For appliances requiring high waterproofing, potting compound is used for waterproofing. It is then directly installed within the front control panel bracket of the electrical appliance.

[0003] However, for some applications, such as small home appliances (water dispensers, coffee makers, etc.) that lack a front control panel bracket, the display screen doesn't need to be pre-installed on the bracket and must be directly fixed to the appliance's designated position as a whole. This requires the display screen to be an independent and complete structure. In such cases, a back cover can be considered to maintain overall integrity. How to fix the back cover and ensure a stable fit between the display module and the front panel requires optimization and separate design. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a back cover pressing display screen that uses a back cover and a front panel to cooperate and can realize the stable fixing of the display module and touch and display.

[0005] Technical solution: To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A back cover press-fit display screen includes a front panel, a display module, and a back cover. The display module is disposed between the front panel and the back cover, and the display module is tightly connected to the front panel via the back cover and a fastening assembly.

[0007] Furthermore, the fastening assembly includes a connecting post disposed on the back of the front panel and a perforated groove disposed on the rear cover, which secures the rear cover to the front panel by screws and the fastening assembly.

[0008] Furthermore, the connecting post penetrates the display module and contacts the back cover, and the connecting post is provided with internal threads.

[0009] Furthermore, a pressing protrusion is provided on the inner surface of the rear cover. The pressing protrusion contacts the circuit board of the display module, and under the action of the fastening component, the display module is tightly connected to the front panel through the pressing protrusion.

[0010] Furthermore, reinforcing ribs are provided on the back of the back cover, and several pressing protrusions are connected to the reinforcing ribs.

[0011] Furthermore, two adjacent retaining rings are provided on the inner surface of the front panel, with the display module disposed within the inner retaining ring, and a receiving groove is formed between the inner and outer retaining rings.

[0012] Furthermore, the outer ring of the back cover is embedded in the receiving groove, and an inner ring of the back cover is provided on the inner side of the outer ring of the back cover, which presses against the back of the display module.

[0013] Furthermore, a buckle is provided on the inner retaining ring, and the buckle secures the display module.

[0014] Furthermore, a notch is provided on the inner ring of the back cover, and the notch corresponds to the position of the buckle.

[0015] Furthermore, the display module includes a film, a light guide plate, and a circuit board arranged from top to bottom. A light blocking element is provided on the outer periphery of the light guide plate, and a touch sensing layer is provided on the film or on the circuit board.

[0016] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0017] (1) The back cover of this utility model presses the display screen without the need for a bracket, directly fixing the ultra-thin display module inside the front panel, and can be conveniently continued to be potted and sealed, reducing the thickness of the entire panel and lowering the cost.

[0018] (2) The back cover of this utility model presses the display screen and needs to be used with a separate back cover. A connecting post is set on the front panel and a groove with holes is set on the back cover. The two are fixed with screws, which makes installation convenient.

[0019] (3) The back cover of this utility model presses the display screen, which fixes the back cover and the front panel, and at the same time uses the pressing protrusion to fix the display module, and makes the display module close to the front panel, making seamless contact with the front panel, improving the stability and sensitivity of touch control, and the seamlessness and bubble-free nature also improve the uniformity and display effect of the display screen. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the back cover pressing against the display screen;

[0021] Figure 2 This is a schematic diagram of the structure where the back cover presses against the front of the display screen;

[0022] Figure 3 yes Figure 2 Sectional view along axis AA;

[0023] Figure 4 This is a schematic diagram of the display screen structure without the back cover;

[0024] Figure 5 This is a schematic diagram of the front panel structure;

[0025] Figure 6 This is a schematic diagram of the back cover structure. Detailed Implementation

[0026] The present invention will be further illustrated below with reference to specific embodiments. The embodiments are implemented based on the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0027] like Figures 1-6 As shown, the rear cover pressing display screen of this utility model includes a front panel 1, a display module 2, a rear cover 3, a connecting post 11, an inner retaining ring 12, an outer retaining ring 13, a receiving groove 14, a buckle 15, a screw post 16, a diaphragm 21, a light blocking component 22, a circuit board 23, a through hole 24, a groove with holes 31, a pressing protrusion 32, a reinforcing rib 33, a rear cover outer ring 34, a rear cover inner ring 35, a notch 36, and a wiring port 37. The display module 2 is disposed between the front panel 1 and the rear cover 3, and the display module 2 is tightly connected to the front panel 1 through the rear cover 3 and a fastening assembly.

[0028] like Figure 3 As shown, in this embodiment, the display module 2 includes a film 21, a light guide plate, and a circuit board 23 arranged from top to bottom. A light-blocking element 22 is arranged on the outer periphery of the light guide plate, and a touch-sensing layer is arranged on the film 21 or on the circuit board 23. The display module 2 is provided with a plurality of through holes 24 for the connecting posts 11 to pass through, and the number and position of the through holes correspond to the connecting posts 11.

[0029] The front panel 1 is used to fix the display module 2 and the back cover 3, and also to fix the entire display screen to the electrical appliance to be installed. In this embodiment, the multiple screw posts 15 on the back of the front panel 1 are used to fix the front panel 1 to the electrical appliance.

[0030] like Figure 4 and 5 As shown, two adjacent retaining rings are provided on the inner surface of the front panel 1, and the display module 2 is arranged inside the inner retaining ring 12. A receiving groove 14 is formed between the inner retaining ring 12 and the outer retaining ring 13. The receiving groove 14 is used to embed the back cover 3, which can not only achieve accurate positioning during installation, but also prevent the back cover from shifting. In application scenarios with high waterproof requirements, it can also be used as a sealing and waterproofing groove. The two adjacent retaining rings are integrally formed with the panel 1.

[0031] The space within the inner retaining ring 12 is primarily used to securely mount the ultra-thin display module. After the display module 2 is installed and debugged, it is mounted upside down within the inner retaining ring 12, with the diaphragm 21 adhering to the inner surface of the front panel 1. A clip 15 is provided on the inner retaining ring 12 to limit and secure the display module 2. The inner retaining ring 12 can also serve as a barrier for potting. In applications requiring high waterproofing, it can be used to seal the entire back of the circuit board 23 with potting, avoiding the through-hole created by the connecting post 11 penetrating the display module 2 during potting.

[0032] The front panel 1 is either an integral structure or a separate structure consisting of a panel support and a transparent display window. In this application, an integral structure is preferred. The front panel 1 is made by injection molding or mold opening. The integral structure is made of light-transmitting or semi-light-transmitting plastic material, and the integral structure has better waterproof performance.

[0033] Alternatively, the front panel 1 can be a split structure including a panel bracket and a transparent display window. The panel bracket is injection molded or molded, and the upper surface of the panel bracket has holes for fixing the transparent display window. In this case, the panel bracket can be made of a non-transparent material, which is not shown in the figure. This structure is existing technology and will not be described in detail.

[0034] The inner retaining ring 12 of the front panel 1 is provided with several connecting posts 11. The connecting posts 11 are part of the fastening assembly. There are at least two connecting posts 11, arranged diagonally, or four, to ensure even distribution of force. Each connecting post 11 includes a base 111 and a post body 112. The base 111 is suspended, with only its legs contacting the front panel 1, minimizing the contact area with the transparent window of the front panel 1 to reduce the impact on the display effect. The post body 112 is mounted on the base 111 and has internal threads.

[0035] like Figure 6 As shown, the back cover 3 is a box with one open side, formed by a back panel and surrounding baffles. The surrounding baffles form the outer ring 34 of the back cover, and an inner ring 35 is also provided on the inside.

[0036] The back cover 3 has perforated grooves 31, the position and number of which correspond to the connecting posts 11, and the two must be used in conjunction. Several pressing protrusions 32 are provided on the inner surface of the back cover 3. These protrusions 32 contact the circuit board 23 of the display module 2, and under the action of the fastening components, the pressing protrusions 32 tightly connect the display module 2 to the front panel 1. Reinforcing ribs 33 are provided on the back of the back cover 3, and the pressing protrusions 32 connect to the reinforcing ribs 33 to improve the structural stability of the back cover. The pressing protrusions 32 contact the blank areas on the back of the circuit board 23, without affecting the arrangement of circuit components or normal operation.

[0037] A wiring port 37 is also provided on the back cover 3, through which the connector on the circuit board 23 passes and is plugged into an external connection cable. A notch 36 is provided on the inner ring 35 of the back cover, which corresponds to the position of the buckle 15 to prevent the inner ring 35 of the back cover from blocking the buckle 15.

[0038] The fastening assembly of this utility model includes a connecting post 11 disposed on the back of the front panel 1 and a perforated groove 31 disposed on the rear cover 3, and the rear cover 3 is fixed to the front panel 1 by screws and the fastening assembly.

[0039] Installation steps of this utility model:

[0040] (1) Assembly and debugging of display module 2;

[0041] (2) The display module 2 is installed into the inner retaining ring 12 from the back of the front panel 1. At this time, the connecting post 11 on the front panel 1 passes through the through hole 24 on the display module 2. After being installed in the predetermined position, the buckle 15 on the inner retaining ring limits the display module 2.

[0042] (3) If it is a special use case with high waterproof requirements, a waterproof layer can be formed by potting glue on the back of the circuit board 12 inside the inner retaining ring 12. If there are no high-level waterproof requirements, this step can be omitted.

[0043] (4) Install the back cover 3 and insert the outer ring 34 of the back cover into the receiving groove 14 to achieve precise positioning. At this time, the connecting post is aligned with the perforated groove 31. Screws are screwed into the connecting post 11 through the perforated groove 31. After tightening, the back cover 3 is fixed to the front panel 1. At the same time, the pressing protrusion 32 on the back cover 3 presses the display module 1, so that the diaphragm 21 of the display module 1 is in close contact with the back of the front panel 1, improving the stability and sensitivity of touch control.

[0044] (5) If it is a special use case with high waterproof requirements, you can apply glue to seal the waterproof inside the outer groove 14 of the back cover outer ring 34. If there are no waterproof requirements, this step can be omitted.

[0045] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A back cover pressing display screen, characterized in that: It includes a front panel (1), a display module (2) and a back cover (3). The display module (2) is disposed between the front panel (1) and the back cover (3), and the display module (2) and the front panel (1) are tightly connected by the back cover (3) and fastening components.

2. The back cover pressing display screen according to claim 1, characterized in that: The fastening assembly includes a connecting post (11) disposed on the back of the front panel (1) and a perforated groove (31) disposed on the rear cover (3), which secures the rear cover (3) to the front panel (1) by screws and the fastening assembly.

3. The back cover pressing display screen according to claim 2, characterized in that: The connecting post (11) passes through the display module (2) and contacts the back cover (3), and the connecting post (11) is provided with internal threads.

4. The back cover pressing display screen according to claim 1, characterized in that: A pressing protrusion (32) is provided on the inner surface of the back cover (3). The pressing protrusion (32) contacts the circuit board (23) of the display module (2). Under the action of the fastening component, the pressing protrusion (32) makes the display module (2) tightly connected to the front panel (1).

5. The rear cover pressing display screen according to claim 4, characterized in that: A reinforcing rib (33) is provided on the back of the back cover (3), and several pressing protrusions (32) are connected to the reinforcing rib (33).

6. The back cover pressing display screen according to claim 1, characterized in that: Two adjacent retaining rings are provided on the inner surface of the front panel (1), and a display module (2) is provided in the inner retaining ring (12). A receiving groove (14) is formed between the inner retaining ring (12) and the outer retaining ring (13).

7. The back cover pressing display screen according to claim 6, characterized in that: The outer ring (34) of the back cover is embedded in the receiving groove (14), and the inner ring (35) of the back cover is provided on the inner side of the outer ring (34), and the inner ring (35) of the back cover presses against the back of the display module (2).

8. The back cover pressing display screen according to claim 7, characterized in that: A buckle (15) is provided on the inner retaining ring (12), and the buckle (15) fixes the display module (2).

9. The back cover pressing display screen according to claim 8, characterized in that: A notch (36) is provided in the inner ring (35) of the rear cover, and the notch (36) corresponds to the position of the buckle (15).

10. The rear cover pressing display screen according to claim 8, characterized in that: The display module (2) includes a film (21), a light guide plate, and a circuit board (23) arranged from top to bottom. A light blocking component (22) is arranged on the outer periphery of the light guide plate. A touch sensing layer is arranged on the film (21) or on the circuit board (23).

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