Printer with structure capable of improving stability and assembly process method of printer

Abstract

The invention discloses a printer with a structure capable of improving stability and an assembly process method.The printer comprises a printer middle frame and a base installed at the bottom of the printer middle frame, a main board is arranged in the printer middle frame, and an internal water guide structure is arranged on the base; a waterproof structure is arranged between the periphery of the middle frame of the printer and the joint of internal accessories, the printer with the structure for improving the stability and the assembly process method are provided, and by optimizing the structural design and applying composite protective materials, the cooperation of the waterproof function and the shockproof function is achieved, the assembly process is simplified, and the stability of the whole machine is improved.

Description

Technical Field

[0001] This invention relates to the field of thermal desktop receipt printer technology, and in particular to a printer with a structure that improves stability and its assembly process. Background Technology

[0002] Thermal desktop receipt printers are widely used in retail, catering, and medical settings, where their operating environments often face challenges such as moisture and slight vibrations, requiring reliable structural design to ensure operational stability. Existing printers often employ the traditional method of "sealing openings" for waterproofing, while shock-absorbing and balancing structures rely primarily on screw fixation. This approach has the following drawbacks: High assembly complexity: Traditional waterproofing and screw fixing processes are cumbersome, requiring multiple alignment and tightening operations, resulting in low assembly efficiency and a tendency for structural stability to decrease due to loose screws; Disjointed waterproofing and shock-absorbing functions: Waterproofing focuses only on sealing, while shock-absorbing structures focus only on fixation; the two lack synergy and cannot cope with the combined effects of moisture and vibration, easily leading to problems such as motherboard misalignment and internal component damage due to moisture; Rapid component wear: Contact points such as the motherboard and frame, and buttons and spring arms, are mostly hard contacts. Long-term use or exposure to vibration can easily cause wear, leading to decreased positioning accuracy and button feedback failure.

[0003] Therefore, there is an urgent need to design a printer structure and supporting process that integrates waterproof, shockproof, and balanced functions, and is easy to assemble with low component wear, in order to solve the pain points of existing technologies.

[0004] Therefore, the existing technology of thermal desktop receipt printers needs further improvement. Summary of the Invention

[0005] The purpose of this invention is to provide a printer with an improved stability structure and its assembly process. This invention provides a printer with an improved stability structure and its assembly process, which achieves waterproof and shockproof functions in synergy through optimized structural design and application of composite protective materials, simplifies the assembly process, and improves the overall stability of the machine.

[0006] To achieve the above objectives, the present invention adopts the following solution: A printer with a stability-enhancing structure includes a printer frame and a base mounted on the bottom of the printer frame. A motherboard is housed within the printer frame, and an internal water-guiding structure is provided on the base. A waterproof structure is provided between the outer perimeter of the printer frame and the connection points of internal components. A connecting and balancing positioning structure is provided between the printer frame and the motherboard. The contact areas between the waterproof structure and the connecting and balancing positioning structure are each provided with a multifunctional composite protective material layer, which simultaneously possesses waterproof sealing and cushioning / shock-absorbing properties.

[0007] Furthermore, the internal water guiding structure includes a waterproof guide groove structure arranged on the base, and a water guiding outlet is provided on one side of the base, the water guiding outlet being connected to the waterproof guide groove structure.

[0008] Furthermore, the water outlet includes a through hole extending through the upper and lower surfaces of the base, and the upper edge of the through hole is provided with a rim, and the rim is provided with a notch.

[0009] Furthermore, the waterproof structure includes a waterproof label disposed at the button of the printer's middle frame, an upper cover disposed on the printer's middle frame, and a waterproof edging structure disposed between the upper cover, the printer's middle frame, and the internal connecting parts of the printer's middle frame.

[0010] Furthermore, the connection balance positioning structure includes two circular positioning holes disposed on the motherboard, a positioning post disposed within the printer frame, the positioning post being installed in a corresponding circular positioning hole, two balance positioning plates disposed within the printer frame for supporting the motherboard and preventing the motherboard from tilting, the lower surface of the motherboard pressing against the upper surface of the balance positioning plates and positioning the height of the motherboard, and an L-shaped positioning groove disposed on one side of the printer frame for positioning the lateral position of the motherboard.

[0011] Furthermore, the connection balance positioning structure includes a switch assembly disposed on the motherboard, a switch balance positioning groove for positioning the switch assembly is disposed on one side of the printer frame, a button is disposed on the motherboard, and a button spring arm is disposed on the printer frame for the button to press against and be positioned.

[0012] Furthermore, the multifunctional composite protective material layer is a nitrile rubber composite layer, which includes an inner nitrile rubber substrate and an outer silicone coating; the nitrile rubber substrate has a Shore hardness of 45-55HA and has honeycomb-shaped buffer cavities inside.

[0013] An assembly process method includes the following steps: S1: Prefabricated multifunctional composite protective material layer, prepared according to the composite structure of nitrile rubber substrate and silicone coating, ensuring that the substrate contains honeycomb buffer cavity, the silicone coating is hydrophobically modified and the water contact angle is ≥110°; S2: Clean the water guiding structure inside the base, and check the inclination of the waterproof guide groove structure, the unobstructedness of the water guiding outlet hole, and the condition of the edge notch. S3: Use a molding process to bond the composite protective material layer to the inner side of the waterproof edging structure of the printer frame and the upper surface of the balance positioning plate, and test the bonding strength; S4: Align the motherboard's round positioning hole with the middle frame positioning post and press to assemble, so that the lower surface of the motherboard presses against the composite layer and the side is embedded in the L-shaped positioning groove; S5: Embed the motherboard switch assembly into the middle frame switch balance positioning slot, and adjust the button to make corresponding contact with the middle frame button spring arm; S6: Apply a waterproof label to the button on the middle frame and close the top cover to ensure it is tightly bonded to the waterproof edge structure and composite layer; S7: Test drainage function, waterproof sealing and positioning stability to ensure that the motherboard is not misaligned and the buttons function normally, and complete the assembly.

[0014] In summary, the advantages of this invention over the prior art are: This invention addresses the shortcomings of existing thermal desktop receipt printers. Through its structural design, it offers the following advantages: Strong functional synergy: A multi-functional composite protective material layer links the waterproof structure with the connecting and balancing positioning structure, achieving a dual function of waterproof sealing and shock absorption. This prevents moisture infiltration and reduces wear from hard contact between components, significantly improving its ability to handle complex operating conditions. Simple and efficient assembly: The connecting and balancing positioning structure uses a combination of positioning posts, positioning holes, balancing plates, and L-shaped grooves, reducing the need for screw fixing and greatly improving assembly efficiency. Enhanced stability and lifespan: An internal water-guiding structure ensures rapid drainage of accumulated water. Attached Figure Description

[0015] Figure 1 This is one of the perspective views of the present invention; Figure 2 This is a schematic diagram of the internal structure of the water-guiding structure of the present invention; Figure 3 This is a second perspective view of the present invention; Figure 4 This is a schematic diagram of the balanced positioning structure of the present invention; Figure 5 This is a schematic diagram of the motherboard structure of the present invention; Figure 6 This is an exploded view of the present invention; Figure 7 This is a schematic diagram of the multifunctional composite protective material layer structure of the present invention; Figure 8 This is a schematic diagram of the assembly process method of the present invention; Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figures 1-8This invention provides a printer with a structure to improve stability, including a printer frame 1 and a base 2 installed at the bottom of the printer frame 1. A motherboard 5 is disposed inside the printer frame 1, and an internal water-guiding structure 3 is disposed on the base 2. A waterproof structure 4 is disposed between the outer periphery of the printer frame 1 and the connection points of internal components. A connecting balance positioning structure 6 is disposed between the printer frame 1 and the motherboard 5. A multi-functional composite protective material layer 12 is provided at the contact points of the waterproof structure 4 and the connecting balance positioning structure 6. The multi-functional composite protective material layer 12 simultaneously possesses waterproof sealing and cushioning / shock-absorbing properties. Water accumulates at the base 2 at the bottom of the printer frame 1 through the internal water-guiding structure 3. The waterproof structure 4 at the outer periphery of the printer frame 1 and the connection points of internal components prevents external moisture intrusion. The connecting balance positioning structure 6 between the printer frame 1 and the motherboard 5 fixes the position of the motherboard 5. Simultaneously, the multi-functional composite protective material layer 12 at the contact points of the waterproof structure 4 and the connecting balance positioning structure 6, with its waterproof sealing and cushioning / shock-absorbing properties, synergistically prevents water infiltration and component vibration misalignment, thereby improving the overall stability of the printer.

[0018] The internal water guiding structure 3 of the present invention includes a waterproof guide groove structure 301 arranged on the base 2. A water guiding outlet 302 is provided on one side of the base 2, and the water guiding outlet 302 is connected to the waterproof guide groove structure 301. In the internal water guiding structure 3, the waterproof guide groove structure 301 on the base 2 guides the accumulated water to flow along the groove, and then discharges the accumulated water from the machine body through the water guiding outlet 302 on one side of the base 2 connected to the waterproof guide groove structure 301, so as to prevent the accumulated water from stagnating in the base 2.

[0019] The water outlet 302 of the present invention includes a through hole 3021 extending through the upper and lower surfaces of the base 2. The upper edge of the through hole 3021 is provided with a rim 3022, and the rim 3022 is provided with a notch 3023. The through hole 3021 of the water outlet 302 extends through the upper and lower surfaces of the base 2, providing a drainage channel for accumulated water. The rim 3022 at the upper edge of the through hole 3021 prevents accumulated water from overflowing to other areas of the base 2, and the notch 3023 on the rim 3022 guides the accumulated water to quickly flow into the through hole 3021, ensuring smooth drainage.

[0020] The waterproof structure 4 of the present invention includes a waterproof label 401 disposed at the button of the printer frame 1, an upper cover 402 disposed on the printer frame 1, and a waterproof edge structure 403 disposed between the upper cover 402, the printer frame 1, and the internal joint of the printer frame 1. In the waterproof structure 4, the waterproof label 401 at the button of the printer frame 1 prevents water from seeping in from the button gaps. After the upper cover 402 on the printer frame 1 is closed, the upper cover 402, the printer frame 1, and the waterproof edge structure 403 at the internal joint form a sealing barrier, further preventing external moisture from entering.

[0021] The connection balance positioning structure 6 of the present invention includes two circular positioning holes 601 disposed on the motherboard 5, and a positioning post 602 disposed inside the printer frame 1. The positioning post 602 is installed in a corresponding circular positioning hole 601. Two balance positioning plates 603 are disposed inside the printer frame 1 to support the motherboard 5 and prevent the motherboard 5 from tilting. The lower surface of the motherboard 5 presses against the upper surface of the balance positioning plate 603 and positions the height of the motherboard 5. An L-shaped positioning groove 604 is disposed on one side of the printer frame 1 to position the lateral position of the motherboard 5. In the connection balance positioning structure 6, the circular positioning holes 601 of the motherboard 5 cooperate with the positioning posts 602 of the printer frame 1 to achieve the initial positioning of the motherboard 5. The balance positioning plates 603 inside the printer frame 1 support the lower surface of the motherboard 5, prevent the motherboard 5 from tilting and position its height. The L-shaped positioning groove 604 on one side of the printer frame 1 restricts the lateral movement of the motherboard 5 and together stabilizes the motherboard 5.

[0022] The connection balance positioning structure 6 of the present invention includes a switch assembly 605 disposed on the motherboard 5. A switch balance positioning groove 606 for positioning the switch assembly 605 is disposed on one side of the printer frame 1. A button 607 is disposed on the motherboard 5. A button spring arm 608 for the button 607 to press against and be positioned is disposed on the printer frame 1. In the connection balance positioning structure 6, the switch assembly 605 of the motherboard 5 is embedded in the switch balance positioning groove 606 of the printer frame 1, further fixing the motherboard 5. The button 607 of the motherboard 5 presses against the button spring arm 608 of the printer frame 1, which not only positions the button 607, but also ensures the normal operation of the button 607 through the elastic feedback of the button spring arm 608.

[0023] The multifunctional composite protective material layer 12 of this invention is a nitrile rubber composite layer 1201, which includes an inner nitrile rubber substrate 1201a and an outer silicone coating 1201b. The nitrile rubber substrate 1201a has a Shore hardness of 45-55HA and contains honeycomb-shaped buffer cavities 1201c with a pore size of 1.5-2.5mm, which enhances the buffering and shock absorption effect. The silicone coating 1201b has a thickness of 0.8-1.2mm and its surface is hydrophobically modified, with a water contact angle ≥110°, which further improves waterproofing. Sealing performance; the nitrile rubber composite layer 1201 is bonded to the inner side of the waterproof edging structure 403 and the upper surface of the balance positioning plate 603 by molding process; the multifunctional composite protective material layer 12 is a nitrile rubber composite layer 1201, the honeycomb buffer cavity 1201c of the inner nitrile rubber substrate 1201a absorbs vibration and avoids hard contact wear of components; the outer silicone coating 1201b is hydrophobically modified with a water contact angle ≥110° to enhance the waterproof sealing effect; bonded to the inner side of the waterproof edging structure 403 and the upper surface of the balance positioning plate 603 by molding process, respectively enhancing waterproof and buffer performance.

[0024] An assembly process method includes the following steps: S1: Prefabricated multifunctional composite protective material layer 12, prepared according to the composite structure of nitrile rubber substrate 1201a and silicone coating 1201b, ensuring that the substrate contains honeycomb buffer cavity 1201c, the silicone coating is hydrophobically modified and the water contact angle is ≥110°. S2: Clean the water guiding structure 3 inside the base 2, and check the inclination of the waterproof guide groove structure 301, the unobstructedness of the water guiding outlet 302 through hole 3021, and the condition of the edge 3022 notch 3023. S3: Use a molding process to attach the composite protective material layer to the inner side of the waterproof edging structure 403 of the printer frame 1 and the upper surface of the balance positioning plate 603, and test the bonding strength. S4: Align the five round positioning holes 601 on the motherboard with the positioning posts 602 on the middle frame and press to assemble, so that the lower surface of the motherboard presses against the composite layer and the side is embedded in the L-shaped positioning groove 604; S5: Embed the motherboard switch assembly 605 into the middle frame switch balance positioning groove 606, and adjust the button 607 to make corresponding contact with the middle frame button spring arm 608. S6: Apply waterproof label 401 to the button area of ​​the middle frame, and cover the top cover 402 to ensure it is tightly attached to the waterproof edge structure and composite layer; S7: Test the drainage function, waterproof sealing, and positioning stability to ensure that the mainboard is not misaligned and the buttons function normally, and complete the assembly; first, prefabricate the multi-functional composite protective material layer 12 according to the composite structure of nitrile rubber substrate 1201a and silicone coating 1201b; clean and inspect the internal water guiding structure 3 of the base 2; use molding process to attach the composite layer to the inside of the waterproof edging structure 403 of the printer frame 1 and the upper surface of the balance positioning plate 603; then align the round positioning hole 601 of the mainboard 5 with the positioning post 602 and press to assemble, embedding it into the L-shaped positioning groove 604; then embed the switch assembly 605, and make contact between the adjustment button 607 and the button spring arm 608; affix the waterproof label 401 and close the top cover 402; finally, test the drainage, waterproof, and positioning performance to ensure stable printer assembly.

[0025] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A printer with improved stability structure, comprising a printer middle frame (1) and a base (2) mounted on the bottom of the printer middle frame (1), and a mainboard (5) arranged in the printer middle frame (1), characterized in that: The base (2) is provided with an internal water guide structure (3), the printer middle frame (1) is provided with a waterproof structure (4) between the periphery and the internal accessory connection, and the printer middle frame (1) and the mainboard (5) are provided with a connecting balance positioning structure (6); the contact parts of the waterproof structure (4) and the connecting balance positioning structure (6) are provided with a multifunctional composite protective material layer (12), and the multifunctional composite protective material layer (12) has the functions of waterproof sealing and buffering and shock absorption.

2. The printer with the structure for improving stability according to claim 1, wherein: The internal water guide structure (3) comprises a waterproof guide groove structure (301) arranged on the base (2), and the base (2) is provided with a water guide outlet (302) on one side.

3. The printer with the structure for improving stability according to claim 2, wherein: The water guide outlet (302) comprises a through hole (3021) penetrating the upper and lower surfaces of the base (2), and the upper end edge of the through hole (3021) is provided with a surrounding edge (3022), and the surrounding edge (3022) is provided with a notch (3023).

4. The printer with the structure for improving stability according to claim 3, wherein: The waterproof structure (4) comprises a waterproof sticker (401) arranged at the key of the printer middle frame (1), and an upper cover (402) is arranged on the printer middle frame (1), and a waterproof surrounding edge structure (403) is arranged between the upper cover (402), the printer middle frame (1) and the internal fitting connection of the printer middle frame (1).

5. The printer with the structure for improving stability according to claim 4, wherein: The connecting balance positioning structure (6) comprises two circular positioning holes (601) arranged on the mainboard (5), a positioning column (602) arranged in the printer middle frame (1), the positioning column (602) is installed in the corresponding circular positioning hole (601), two balance positioning plates (603) are arranged in the printer middle frame (1) for supporting the mainboard (5) and preventing the mainboard (5) from tilting, the lower surface of the mainboard (5) is pressed against the upper surface of the balance positioning plate (603) to position the height position of the mainboard (5), and an L-shaped positioning groove (604) is arranged on one side of the printer middle frame (1) for positioning the lateral position of the mainboard (5).

6. The printer with the structure for improving stability according to claim 5, wherein: The connecting balance positioning structure (6) comprises a switch assembly (605) arranged on the mainboard (5), an L-shaped positioning groove (606) is arranged on one side of the printer middle frame (1) for positioning the switch assembly (605), a key (607) is arranged on the mainboard (5), and a key elastic arm (608) is arranged on the printer middle frame (1) for the key (607) to press and contact and position.

7. The printer with the structure for improving stability according to claim 6, wherein: The multifunctional composite protective material layer (12) is a nitrile rubber composite layer (1201), which comprises a nitrile rubber base material (1201a) in the inner layer and a silica gel coating (1201b) in the outer layer; the Shore hardness of the nitrile rubber base material (1201a) is 45-55HA, and a honeycomb buffer cavity (1201c) is arranged in the inner layer.

8. An assembly process method comprising the printer of any one of claims 1-7, characterized by, The method comprises the following steps: S1: A prefabricated multifunctional composite protective material layer (12) is prepared according to the composite structure of nitrile rubber base material (1201a) and silica gel coating (1201b), ensuring that the base material contains honeycomb buffer cavities (1201c) and the silica gel coating is hydrophobically modified with a water contact angle of ≥110°; S2: Clean the internal water guide structure (3) of the base (2), check the inclination of the waterproof guide groove structure (301), the smoothness of the through hole (3021) of the water outlet (302), and the state of the notch (3023) of the surrounding edge (3022); S3: Use the molding process to adhere the composite protective material layer to the inner side of the waterproof surrounding edge structure (403) of the printer middle frame (1) and the upper surface of the balance positioning plate (603), and detect the bonding strength; S4: Align the main board (5) round positioning hole (601) with the middle frame positioning column (602) and press fit, so that the lower surface of the main board presses the composite layer and the side surface is embedded in the L-shaped positioning groove (604); S5: Embed the main board switch assembly (605) into the middle frame switch balance positioning groove (606), adjust the key (607) to correspondingly contact the middle frame key elastic arm (608); S6: Paste waterproof stickers (401) at the middle frame keys, and cover the upper cover (402) to make it tightly adhere to the waterproof surrounding edge structure and the composite layer; S7: Detect the drainage function, waterproof sealing performance and positioning stability to ensure that the main board is not misaligned and the key function is normal, and complete the assembly.

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