An electronic clock and display screen optimized for mounting

Abstract

The utility model provides a kind of structure of electronic clock and display screen optimization fixation, by being provided with first limiting block and limiting structure on shell, display screen, conducting strip and circuit board are sequentially loaded into shell, the side where the circuit board of display screen is formed stable electric connection by pressing plate, the other side of display screen is limited by first limiting block, integrally form a stable electronic clock display screen optimization fixation structure, avoid screw and other cumbersome fixing mode, improve assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of electronic clocks, and in particular to an optimized and fixed structure for an electronic clock and display screen. Background Technology

[0002] Electronic clocks, as basic time display devices, are widely used in homes, offices, public facilities, and industrial settings. Modern electronic clocks, in addition to their basic time display function, typically integrate temperature and humidity monitoring modules, and display this information visually through LED or LCD screens. Their installation methods include wall-mounted, desktop, and embedded types, which places high demands on the stability, shock resistance, and ease of installation of the optimized and fixed structure of the electronic clock display.

[0003] In the existing technology, the connection methods between the circuit board and the LCD display are usually pin header socket connection, FPC flexible circuit board connection and conductive strip crimping. Among them, conductive strip crimping involves setting a conductive rubber strip between the electrode of the display and the contact of the circuit board, and directly attaching the contact of the display and the circuit board through elastic pressure, which eliminates the welding or plugging process and can shorten the assembly time.

[0004] However, during actual assembly, the applicant found that existing circuit board fixing methods use screws for fastening, where screws secure the circuit board and press the conductive strip between it and the screen. This method of fixing is cumbersome. Therefore, this application provides a screwless fixing method, simplifying the fixing process and improving assembly efficiency. Utility Model Content

[0005] Therefore, there is a need to provide an optimized structure for fixing electronic clocks and displays, which solves the problem that the existing circuit board fixing method uses screws to fix the circuit board, and the circuit board presses the conductive strip between it and the screen. This fixing method has a relatively cumbersome assembly process.

[0006] To achieve the above objectives, this utility model provides an optimized and fixed structure for an electronic clock display screen, including a housing, a display screen, a circuit board, a conductive strip, and a pressure plate;

[0007] The display screen is disposed inside the housing; the circuit board presses the conductive strip against one side of the back of the display screen, so that the circuit board is electrically connected to the display screen; the housing has a limiting structure that cooperates with the pressure plate on the side where the circuit board is located, and the housing has a first limiting block for limiting the display screen on the other side away from the circuit board. The pressure plate is inserted into the inner side of the limiting mechanism to press the circuit board and fix it.

[0008] Furthermore, the pressure plate is provided with multiple snap-fit ​​receiving slots, and the limiting structure is composed of multiple snap-fit ​​blocks.

[0009] Furthermore, the buckle block is provided with an adhesive injection hole.

[0010] Furthermore, the pressure plate has extensions at both ends.

[0011] Furthermore, the upper and / or lower edge of the circuit board is provided with a slot, and the interior of the housing is provided with a second limiting block that cooperates with the slot.

[0012] Furthermore, the display screen consists of an LCD and a backlight assembly.

[0013] Furthermore, it also includes a transparent screen, which is disposed between the display screen and the housing.

[0014] The present invention also provides an electronic clock, including an optimized and fixed structure for an electronic clock display screen as described in any of the above technical solutions.

[0015] Furthermore, the outer casing includes a front casing and a rear casing, and the display screen, circuit board, conductive strip and pressure plate are all disposed inside the front casing.

[0016] Furthermore, it also includes a battery compartment fixed to the rear shell, the rear shell having an opening adapted to the battery compartment, and a battery cover at the opening; and / or

[0017] It also includes a keypad assembly having multiple buttons, the keypad assembly being disposed on the rear cover; and / or

[0018] It also includes a sound-generating component, which includes a rear acoustic chamber, a horn, and a horn bracket.

[0019] Unlike existing technologies, the above technical solution sets a first limiting block and a limiting structure on the outer shell, and installs the display screen, conductive strip and circuit board into the outer shell in sequence. The pressure plate forms a stable electrical connection on one side of the display screen where the circuit board is located, and the first limiting block restricts the other side of the display screen, forming a stable electronic clock display screen with an optimized and fixed structure. This eliminates the need for cumbersome fixing methods such as screws and improves assembly efficiency. Attached Figure Description

[0020] Figure 1 An exploded three-dimensional view of the optimized and fixed structure of the electronic clock display screen described in the specific embodiment;

[0021] Figure 2 An exploded three-dimensional view of the optimized and fixed structure of the electronic clock display screen described in the specific embodiment;

[0022] Figure 3 This is a three-dimensional structural diagram of the pressure plate described in the specific embodiment;

[0023] Figure 4 This is a three-dimensional structural diagram of the optimized and fixed structure of the electronic clock display screen after assembly, as described in the specific embodiment.

[0024] Figure 5 for Figure 4 A magnified view of a portion of the image;

[0025] Figure 6 for Figure 4 Enlarged view of part B;

[0026] Figure 7 A three-dimensional structural diagram of the electronic clock described in a specific embodiment;

[0027] Figure 8 This is an exploded view of the three-dimensional structure of the electronic clock described in a specific embodiment.

[0028] Explanation of reference numerals in the attached figures:

[0029] 10. Front shell; 101. Clip block; 1011. Glue-filling hole; 102. First limiting block; 103. Second limiting block;

[0030] 11. Rear shell;

[0031] 20. Display screen; 201. LCD; 202. Backlight assembly;

[0032] 30. Circuit board; 301. Slotting;

[0033] 40. Conductive strip;

[0034] 50. Pressure plate; 501. Snap-fit ​​receiving groove; 502. Extension;

[0035] 60. Transparent screen;

[0036] 70. Battery compartment;

[0037] 72. Linkage component;

[0038] 73. Rear vocal cavity;

[0039] 74. Loudspeaker;

[0040] 75. Speaker stand;

[0041] 76. Battery cover. Detailed Implementation

[0042] To explain in detail the technical content, structural features, objectives, and effects of the technical solution, the following description is provided in conjunction with specific embodiments and accompanying drawings.

[0043] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0044] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0045] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0046] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0047] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0048] As understood in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0049] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0050] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0051] Please see Figures 1 to 8 This embodiment provides a fixing structure for a display screen 20, including a housing, a display screen 20, a circuit board 30, a conductive strip 40, and a pressure plate 50;

[0052] The display screen 20 is disposed within the housing, which can be made of plastic or aluminum alloy. The plastic housing is made of ABS, which has impact resistance and chemical corrosion resistance. It can be injection molded into a housing with a wall thickness of 1.5-2mm. Alternatively, an aluminum alloy housing can be made into an integrated housing through CNC machining or die casting. The surface can be anodized to improve wear resistance. The display screen 20 can be an LED display screen 20 or an LCD display screen 20. The LCD display screen 20 consists of an LCD 201 and a backlight assembly 202. The backlight assembly 202 can use a side-lit LED light source, which diffuses light evenly to the LCD display area through a light guide plate, reducing power consumption and improving display brightness. The circuit board 30 presses the conductive strip 40 against one side of the back of the display screen 20. The conductive strip 40 is composed of alternating conductive layers (carbon fiber or silver paste) and insulating layers (silicone). When vertical pressure is applied to the circuit board 30, the conductive layers are compressed and deformed, forming multiple conductive paths with the electrodes on the back of the display screen 20 and the contacts of the circuit board 30, thus electrically connecting the circuit board 30 and the display screen 20. The outer casing has a limiting structure on one side of the circuit board 30 that cooperates with the pressure plate 50. The limiting structure can be an inwardly extending strip-shaped protrusion. On the other side of the outer casing away from the circuit board 30, there is a first limiting block 102 for limiting the display screen 20. The first limiting block 102 is used to abut against the display screen 20 and, together with the pressure plate 50 on the other side, fixes the display screen 20 inside the outer casing. There can be multiple first limiting blocks 102. The pressure plate 50 is inserted into the inner side of the limiting mechanism to press the circuit board 30 to achieve fixation. The pressure plate 50 is a plate-shaped structure, and its thickness should be sufficient to be inserted between the limiting structure and the circuit board 30, and to apply outward pressure to the circuit board 30 so that the circuit board 30 can press the conductive strip 40.

[0053] The pressure plate 50 can be made of metal stamping or injection molding, and the surface can be provided with anti-slip texture to facilitate pressure application during assembly. The latching block 101 can be designed as an elastic arm structure. When the pressure plate 50 is engaged with the lower limit structure, the elastic arm deforms and returns to its original shape after engagement to form a lock.

[0054] The assembly steps of the fixed structure of the display screen 20 are as follows (using...) Figure 4(Using an example): 1. Embed the display screen 20 into the front of the housing, with its right edge abutting below the first limiting block 102, thus fixing the right side of the display screen 20; 2. Attach the conductive strip 40 (such as a zebra stripe) to the electrode area on the back of the display screen 20, i.e., located on the left side edge; 3. Align the circuit board 30 with the left mounting position of the housing, so that its contacts contact the upper surface of the conductive strip 40; 4. Slide the pressure plate 50 into the left side of the housing and align it with the limiting structure of the housing; 5. Apply pressure to make the pressure plate 50 fully engage between the limiting structure and the circuit board 30. At this time, the circuit board 30 is uniformly pressed, and the conductive strip 40 undergoes elastic deformation, forming a stable electrical contact. This completes the assembly process of the fixing structure of the display screen 20.

[0055] This new invention uses a first limiting block 102 and a limiting structure on the outer shell to sequentially install the display screen 20, conductive strip 40 and circuit board 30 into the outer shell. The pressure plate 50 forms a stable electrical connection on one side of the display screen 20 where the circuit board 30 is located, and the first limiting block 102 restricts the other side of the display screen 20, thus forming a stable fixed structure for the display screen 20. This eliminates the need for cumbersome fixing methods such as screws and improves assembly efficiency.

[0056] In some embodiments, the pressure plate 50 is provided with multiple snap-fit ​​receiving slots 501, and the limiting structure is composed of multiple snap-fit ​​blocks 101. The pressure plate 50 is designed with multiple snap-fit ​​receiving slots 501 (e.g., U-shaped slots or dovetail slots), and the outer shell is provided with snap-fit ​​blocks 101 (e.g., wedge-shaped or barbed structures) at corresponding positions. When the pressure plate 50 is installed, the snap-fit ​​blocks 101 are embedded in the receiving slots to form a snap-fit ​​connection. This enhances assembly convenience and stability.

[0057] In some embodiments, the snap-fit ​​block 101 is provided with an adhesive injection hole 1011. The adhesive injection hole 1011 on the snap-fit ​​block 101 can be a through hole or a blind hole. After assembly, adhesive, such as epoxy resin or silicone, is injected through the adhesive injection hole 1011. After the adhesive cures, it can enhance the bonding strength between the snap-fit ​​block 101 and the pressure plate 50, preventing loosening due to vibration or impact.

[0058] In some embodiments, the pressure plate 50 has extensions 502 at both ends. These extensions 502, such as widened edges or L-shaped bends, cover the edge area of ​​the circuit board 30, increasing the contact area between the pressure plate 50 and the circuit board 30. For example, the extensions 502 can be designed as arc-shaped or stepped to prevent the distal side of the circuit board 30 from warping and improve overall stability.

[0059] In some embodiments, the upper and / or lower edges of the circuit board 30 are provided with slots 301, and the interior of the housing is provided with a second limiting block 103 that cooperates with the slots 301. The circuit board 30 has slots 301 on its edges, such as rectangular slots or semi-circular notches, and the interior of the housing is correspondingly provided with second limiting blocks 103 (such as protrusions or claws). When the circuit board 30 is installed, the second limiting block 103 engages with the slots 301, restricting the lateral displacement of the circuit board 30 and preventing the circuit board 30 from being dislodged due to external force.

[0060] In some embodiments, a transparent screen 60 is also included, which is disposed between the display screen 20 and the housing. The transparent screen 60 (such as an acrylic or tempered glass panel) is added between the housing and the display screen 20. The transparent screen 60 is fixed to the stepped structure of the housing by clips or adhesive, forming a dustproof or waterproof barrier while protecting the surface of the display screen 20. The edges of the transparent screen 60 are fixed with double-sided tape or UV adhesive, with the adhesive layer thickness controlled at 0.1-0.3 mm to balance sealing and light transmittance.

[0061] The present invention also provides an electronic clock, including a display screen 20 fixing structure as described in any of the foregoing embodiments.

[0062] Specifically, the outer casing includes a front casing 10 and a rear casing 11. The display screen 20, circuit board 30, conductive strip 40, and pressure plate 50 are all housed within the front casing 10. The front casing 10 accommodates the display screen 20, conductive strip 40, circuit board 30, and pressure plate 50, thus contributing to the fixing structure of the display screen 20. The rear casing 11 integrates a battery compartment 70, buttons, or sound-generating components, and is assembled to the front casing 10, for example, via clips or screws. The power supply module of the electronic clock can be a lithium battery, a rechargeable battery, or the like.

[0063] In some embodiments, a battery compartment 70 is further included, which is fixed to the rear shell 11. The rear shell 11 has an opening adapted to the battery compartment 70, and a battery cover 76 is provided at the opening. The battery compartment 70 houses the battery and supplies power to the electronic clock. The battery cover 76 is a detachable structure, for example, by means of a rotating battery cover or a sliding door. The battery compartment 70 has elastic contacts that form a stable connection with the battery electrodes.

[0064] In some embodiments, a key assembly 72 is also included. The key assembly 72 has multiple buttons and is disposed on the rear housing. Multiple buttons can be assembled simultaneously using a single key assembly 72, improving assembly efficiency. The key assembly 72 performs functions via silicone buttons or membrane switches, such as adjustment buttons or mode switching buttons.

[0065] It also includes a sound-generating component, which includes a rear acoustic cavity 73, a speaker 74, and a speaker bracket 75, which are fixed inside the rear shell 11 by the bracket to optimize the sound propagation effect.

[0066] The conductive strip ensures contact stability through its unique material and structural design: it employs an alternating structure of conductive rubber (such as silicone containing carbon or silver particles) and insulating silicone layers (conductive layer spacing 0.1-0.3mm), combined with a silicone substrate with an elastic modulus of 0.5-1.0MPa. Under pressure, it can produce an elastic deformation of 0.3-0.5mm, adapting to the assembly tolerance (±0.1mm) between the display screen and the circuit board. During installation, a pressure plate applies 3-5N / cm. 2 The uniform vertical pressure ensures a tight seal between the conductive layer and the contacts (contact resistance ≤5Ω), while the limiting blocks or snap-fit ​​structures within the housing restrict circuit board displacement, preventing detachment due to uneven pressure. Simultaneously, the elastic properties of the conductive rubber absorb mechanical vibration energy from 10-50Hz, and the sealed housing design blocks dust and moisture, ensuring stable operation in environments ranging from -40℃ to +85℃. Routine maintenance involves using a multimeter to test the circuit impedance (≤10Ω) and insulation (≥100MΩ), and periodically cleaning the contact surfaces with alcohol to remove the oxide layer. If the rubber ages (hardness >60 Shore A), it should be replaced promptly, thus comprehensively maintaining the long-term reliability of conductivity.

[0067] The display function of an LCD screen is achieved through the precise coordination between the backlight assembly and the LCD liquid crystal layer: the backlight module uses a high-density LED array as the basic light source, eliminates light spots through the microstructure scattering of the diffusion film, and enhances the forward brightness by 30%-50% with the help of a prism-structured brightness enhancement film (BEF), forming a uniform surface light source. After passing through multiple layers of processing films (diffusion film, brightness enhancement film, light guide plate), the light source penetrates the liquid crystal layer with a divergence angle within ±2°. The liquid crystal layer is sandwiched between two layers of transparent ITO electrodes, and the rotation angle of the liquid crystal molecules is controlled by applying a voltage of 3.3-5V through a driving circuit. For example, a TN-type LCD allows 90% transmittance when there is no voltage, but after applying a 5V voltage, the transmittance drops sharply to below 5%, creating a contrast between light and dark. Color display is achieved through RGB filters, with each pixel composed of red, green, and blue sub-pixels, and the light transmission intensity of each sub-pixel is precisely controlled by TFT thin-film transistors (0.1ms response time). The assembly employs a layered packaging structure, sequentially assembling the power module, backlight module, and LCD panel from the bottom module housing. Each layer is positioned by the module frame and fixed by pressure applied by the front frame, with strict control over interlayer gaps. Conductive connections utilize conductive rubber strips containing carbon particles, achieving a contact resistance of ≤5Ω under pressure to ensure stable transmission of drive signals to the TFT array. For system coordination, a timing control chip (such as the SC8560) receives image signals via an LVDS interface, driving the resolution screen at a specific horizontal frequency. Simultaneously, the power module provides three independent outputs to the backlight, LCD bias, and logic circuits respectively. To enhance reliability, a 0.5mm silicone buffer layer can be placed between the backlight and LCD layers to absorb mechanical vibrations, and the module housing's airtight design prevents dust and moisture from entering, ultimately achieving display functionality.

[0068] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of protection of this utility model patent.

Claims

1. An optimized and fixed structure for an electronic clock display screen, characterized in that: Includes the outer casing, display screen, circuit board, conductive strip, and pressure plate; The display screen is disposed inside the housing; the circuit board presses the conductive strip against one side of the back of the display screen, so that the circuit board is electrically connected to the display screen; the housing has a limiting structure that cooperates with the pressure plate on the side where the circuit board is located, and the housing has a first limiting block for limiting the display screen on the other side away from the circuit board. The pressure plate is inserted into the inner side of the limiting mechanism to press the circuit board and fix it.

2. The optimized and fixed structure for an electronic clock display screen according to claim 1, characterized in that: The pressure plate is provided with multiple buckle receiving slots, and the limiting structure is composed of multiple buckle blocks.

3. The optimized and fixed structure for an electronic clock display screen according to claim 2, characterized in that: The buckle block is provided with a glue-filling hole.

4. The optimized and fixed structure for an electronic clock display screen according to claim 1, characterized in that: The pressure plate has extensions at both ends.

5. The optimized and fixed structure for an electronic clock display screen according to claim 1, characterized in that: The circuit board has a slot along its upper and / or lower edge, and the housing has a second limiting block that mates with the slot inside.

6. The optimized and fixed structure for an electronic clock display screen according to claim 1, characterized in that: The display screen consists of an LCD and a backlight assembly.

7. The optimized and fixed structure for an electronic clock display screen according to claim 1, characterized in that: It also includes a transparent screen, which is disposed between the display screen and the housing.

8. An electronic clock, characterized in that: This includes an optimized and fixed structure for an electronic clock display screen as described in any one of claims 1-7.

9. An electronic clock according to claim 8, characterized in that: The housing includes a front housing and a rear housing, and the display screen, circuit board, conductive strip and pressure plate are all disposed inside the front housing.

10. An electronic clock according to claim 9, characterized in that: It also includes a battery compartment fixed to the rear shell, the rear shell having an opening adapted to the battery compartment, and a battery cover at the opening; and / or It also includes a keypad assembly having multiple buttons, the keypad assembly being disposed on the rear cover; and / or It also includes a sound-generating component, which includes a rear acoustic chamber, a horn, and a horn bracket.

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