Waterproof structure for paper delivery button of printer

Abstract

The utility model provides a waterproof structure for a paper-out button of a printer, and the structure comprises a printer housing, the outer surface of which is provided with a through installation groove; the PCB is detachably fixed to the inner side of the printer shell, and a pressing contact is arranged at the position, opposite to the mounting groove, of the PCB. The key structure is movably arranged in the mounting groove, and a contact surface matched with the pressing contact is formed at the bottom of the key structure; the flexible waterproof cushion layer covers the mounting groove along the inner side of the printer shell; the pressing plate is arranged between the flexible waterproof cushion layer and the PCB and used for transmitting pressure of the PCB so that the inner side surface of the flexible waterproof cushion layer can be tightly pressed on the inner surface of the printer shell, and the waterproof structure for the paper-out key of the printer remarkably improves the dustproof and waterproof performance of the printer, prolongs the service life of equipment and improves the waterproof performance of the printer. The maintenance cost is reduced, the convenience and comfort of key operation are kept, and the user experience is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waterproof structures of printers, in particular to a waterproof structure for a paper output button of a printer. Background Art

[0002] There is usually a paper ejection button on the printer housing, which allows the user to control the paper ejection by pressing it.

[0003] When designing the paper eject button of an existing printer, the gap exists and the waterproof structure cannot be used. This will sacrifice the dustproof and waterproof effect of the entire product.

[0004] In the prior art, printers are a common office equipment, and their design and function optimization have always been the focus of the industry. In order to improve the user experience, the printer housing is usually equipped with a paper output button. This design is intended to simplify the user's operation process. With a simple press, the paper can be smoothly output, which greatly improves the efficiency and convenience of printing operations.

[0005] However, although the paper eject button has outstanding performance in improving operational convenience, its design limitations have gradually emerged. Specifically, the existing paper eject button often adopts a clearance fit design. Although this design can ensure the flexibility and response speed of the button, it sacrifices the overall protection performance of the printer to a certain extent. Due to the lack of an effective waterproof structure, the printer is extremely susceptible to external environmental factors such as moisture penetration and dust intrusion when used in a humid or dusty environment, which not only affects the normal operation of the internal components of the printer, but may also shorten the service life of the equipment and increase maintenance costs.

[0006] Therefore, how to effectively improve the dust and water resistance of the printer while maintaining the convenience of paper ejection button operation has become a key issue that needs to be urgently addressed in the current printer design field.

[0007] In view of this, the inventor specially designed a waterproof structure for a printer paper ejection button, and this case was thus created. Utility Model Content

[0008] In order to solve the above problems, the technical solution of the utility model is as follows:

[0009] A waterproof structure for a paper ejection button of a printer, comprising:

[0010] The printer housing has an outer surface provided with a penetrating mounting groove;

[0011] The PCB board is detachably fixed to the inner side of the printer housing and is provided with a pressing contact at a position opposite to the mounting slot;

[0012] The key structure is movably arranged in the installation groove, and its bottom forms a contact surface that cooperates with the pressing contact point;

[0013] A flexible waterproof cushion covering the mounting slot along the inside of the printer housing;

[0014] The pressing plate is arranged between the flexible waterproof pad layer and the PCB board, and is used for transmitting the pressure of the PCB board to press the inner surface of the flexible waterproof pad layer against the inner surface of the printer housing.

[0015] Preferably, a closed first retaining edge is arranged on the inner surface of the printer housing and around the outer peripheral side of the installation groove, and a closed second retaining edge is arranged on the inner surface of the printer housing and around the edge of the installation groove. The first retaining edge, the second retaining edge and the inner side wall of the printer housing form a waterproof card groove, and the second retaining edge has a vertical extension height smaller than the first retaining edge.

[0016] Preferably, a circle of limiting clamping edge which cooperates with the second stop edge for limiting is provided on the circumferential side of the bottom of the button structure.

[0017] Preferably, the flexible waterproof cushion layer includes a bottom covering the waterproof slot and a top protruding downward along the center of the bottom, and the bottom and the top are transitioned in an integrated manner.

[0018] Preferably, a positioning groove for the pressing contact to be embedded is concavely provided at a position of the top opposite to the pressing contact, and the contact surface of the key structure is movably abutted against the other side of the positioning groove.

[0019] Preferably, the bottom portion has a vertical thickness greater than that of the first stop edge.

[0020] Preferably, the pressure plate is a closed ring with an inverted "L"-shaped cross-section and is arranged around the circumference of the installation groove, and it includes a vertical section in contact with the PCB board and a horizontal section extending horizontally along the top of the vertical section. The inner side wall of the horizontal section covers the first guard edge and at least part of the waterproof card slot.

[0021] Preferably, at least two positioning posts are provided on the inner wall of the printer housing and around the waterproof card slot, and a positioning groove is provided through the horizontal section of the pressure plate and is opposite to the positioning posts.

[0022] Preferably, a group of locking structures and a group of supporting structures are provided on the inner side wall of the printer housing and at the diagonal position of the mounting slot, wherein the locking structure is used to lock and fix the PCB board, and the supporting structure is used to support one side of the PCB board.

[0023] Preferably, a notch groove is provided on one side of the second stop, and a limiting portion which cooperates with the notch groove is provided on one side of the button structure.

[0024] The beneficial effects of the utility model are as follows:

[0025] The utility model effectively solves the shortcomings of the traditional key structure in terms of waterproof and dustproof by innovatively designing the paper ejection key in the prior art. The structure mainly includes key components such as the printer housing, PCB board, key structure, flexible waterproof cushion layer and pressure plate. The components work together to build a key system that maintains convenient operation and has excellent waterproof and dustproof performance.

[0026] Specifically, the mounting slot on the printer housing provides space for the key structure to move, while the pressing contacts on the PCB board accurately match the contact surface of the key structure, ensuring the sensitivity and accuracy of the key operation. The flexible waterproof cushion layer, as the core of the waterproof structure, cleverly covers the inside of the printer housing and fits tightly with the mounting slot to form an effective waterproof barrier. The pressure plate applies pressure to the flexible waterproof cushion layer so that its inner surface fits tightly to the inner surface of the printer housing, further enhancing the waterproof effect while also ensuring the stability and reliability of the key structure.

[0027] In addition, the utility model also adopts a series of optimized designs, such as setting a first stop edge, a second stop edge and a waterproof card slot, the limiting cooperation between the limit card edge and the second stop edge, the precise alignment of the top recessed alignment groove and the pressing contact, and the inverted "L"-shaped structure of the pressure plate and the auxiliary fixation of the positioning column, etc., so that the overall structure is more compact and stable, and at the same time ensures the effective sealing of the waterproof cushion layer to prevent moisture and dust from penetrating into the interior of the printer through any gaps.

[0028] To sum up, the waterproof structure for the paper output button of the printer provided by the utility model not only significantly improves the dustproof and waterproof performance of the printer, extends the service life of the equipment, reduces maintenance costs, but also maintains the convenience and comfort of button operation, greatly improves the user experience, and has important application value and market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0030] in:

[0031] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0032] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0033] Figure 3 It is a partial cross-sectional structural schematic diagram of the utility model;

[0034] Figure 4 This is one of the schematic diagrams of the partial explosion structure of the utility model;

[0035] Figure 5 This is the second schematic diagram of the partial explosion structure of the utility model;

[0036] Figure 6 It is a schematic diagram of a partial explosion structure highlighting the mounting structure of the pressure plate in the utility model;

[0037] Figure 7 It is a partial exploded structural schematic diagram highlighting the key structure installation structure in the utility model.

[0038] Description of labels:

[0039] 10. Printer housing; 11. Mounting slot; 12. First stop edge; 13. Second stop edge; 14. Waterproof card slot; 15. Positioning column; 16. Locking structure; 17. Support structure; 18. Notch slot; 20. PCB board; 21. Press contact; 30. Key structure; 31. Key body; 32. Light guide strip; 33. Fixing slot; 34. Buckle hole; 35. Snap-on part; 36. Hidden slot; 37. Limiting card edge; 38. Limiting part; 40. Flexible waterproof cushion layer; 41. Bottom; 42. Top; 43. Alignment slot; 50. Press plate; 51. Vertical section; 52. Horizontal section; 53. Positioning slot. DETAILED DESCRIPTION

[0040] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] See also Figures 1 to 7 , which is a waterproof structure for a paper ejection button of a printer as the best embodiment of the utility model, comprises:

[0042] The printer housing 10 has an outer surface provided with a penetrating and generally square mounting groove 11;

[0043] The PCB board 20 is detachably fixed to the inner side of the printer housing 10 and is provided with a pressing contact 21 at a position opposite to the mounting slot 11. Specifically, in this embodiment, the pressing contact 21 is electrically welded to the inner top 42 of the PCB board 20. When it is pressed, the corresponding control circuit is triggered.

[0044] The key structure 30 is adapted to the shape of the mounting groove 11 and is movably disposed in the mounting groove 11, and its bottom 41 forms a contact surface that cooperates with the pressing contact 21;

[0045] In this embodiment, the key structure 30 includes a key body 31 and a light guide strip 32. The light guide strip 32 is arranged around the inner wall of the installation groove 11, and its top 42 is recessed to form a fixed groove 33 for the key body 31 to be embedded in. A pair of clipping parts 35 are symmetrically arranged on both sides of the lower end of the key body 31 and along its length direction. The bottom 41 of the fixing groove 33 is penetrated to form two clipping holes 34 that are snap-fitted with the clipping parts 35. The bottom 41 of the light guide strip 32 is recessed to form a hidden groove 36 opposite to the fixing groove 33. The clipping hole 34 penetrates into the hidden groove 36 and the clipping part 35 is placed in the hidden groove 36 after being limitedly fitted with the clipping hole 34.

[0046] A flexible waterproof cushion layer 40 covers the mounting groove 11 along the inner side of the printer housing 10. In many embodiments, the flexible waterproof cushion layer 40 is a flexible waterproof layer made of silicone material or polyurethane material. In this embodiment, a waterproof silicone layer is preferably used as the flexible waterproof cushion layer 40;

[0047] The pressing plate 50 is disposed between the flexible waterproof pad layer 40 and the PCB board 20 , and is used to transmit the pressure of the PCB board 20 to press the inner surface of the flexible waterproof pad layer 40 against the inner surface of the printer housing 10 .

[0048] Preferably, Figure 2 As shown, a circle of closed first retaining edge 12 is arranged on the inner surface of the printer housing 10 and around the outer peripheral side of the installation groove 11, and a circle of closed second retaining edge 13 is arranged on the inner surface of the printer housing 10 and around the edge of the installation groove 11. The first retaining edge 12, the second retaining edge 13 and the inner side wall of the printer housing 10 are enclosed to form a U-shaped waterproof card slot 14, and the vertical extension height of the second retaining edge 13 is smaller than the first retaining edge 12. On the whole, a circle of limiting card edges 37 that cooperate with the second retaining edge 13 are arranged on the outer peripheral side of the bottom 41 of the light guide strip 32. The flexible waterproof cushion layer 40 includes a bottom 41 covering the waterproof card slot 14 and a top 42 protruding downward from the center of the bottom 41, and the bottom 41 and the top 42 are transitioned as a whole.

[0049] Thus, if Figure 3 , 4 As shown in Figure 5, the bottom 41 of the flexible waterproof cushion layer 40 is adapted to the waterproof card slot 14, and the top 42 on the inner side thereof protrudes toward the direction of the PCB board 20 to form a protruding portion adapted to the key structure 30. When the flexible waterproof cushion layer 40 is pressed, the middle part of the key structure 30 is embedded in the protruding portion in the middle part of the flexible waterproof cushion layer 40, and its two sides are sealed by the pressing structure between the waterproof card slot 14 and the bottom 41, thereby forming a tight waterproof structure and improving the waterproof effect.

[0050] Preferably, Figure 4 , 5As shown, a position of the top 42 opposite to the pressing contact 21 is concavely provided with an alignment groove 43 for the pressing contact 21 to be embedded in, and the contact surface of the key structure 30 movably abuts against the other side of the alignment groove 43 .

[0051] Preferably, the vertical thickness of the bottom 41 is greater than that of the first baffle 12. In this embodiment, the thickness of the bottom 41 of the flexible waterproof cushion layer 40 is set to be slightly greater than the thickness of the first baffle 12, so that the flexible waterproof cushion layer 40 can be thoroughly compressed in cooperation with the pressing plate 50 to be tightly attached to the inner surface of the printer housing 10, thereby avoiding the situation where part of the flexible waterproof cushion layer 40 is not compressed due to insufficient thickness, thereby fully enhancing the sealing and protective effect of the flexible waterproof cushion layer 40.

[0052] Preferably, Figure 3 , 4 As shown in Figures 5 and 6, the pressing plate 50 is a closed ring with an inverted "L"-shaped cross section and is arranged around the side of the installation groove 11, and includes a vertical section 51 in contact with the PCB board 20 and a horizontal section 52 extending horizontally along the top 42 of the vertical section 51. A hollow area corresponding to the protruding portion of the flexible waterproof cushion layer 40 is formed in the center of the pressing plate 50, and the inner side wall of the horizontal section 52 covers the first retaining edge 12 and at least part of the waterproof card groove 14. In this embodiment, the inner side wall of the horizontal section 52 covers the first retaining edge 12 and a part of the waterproof card groove 14, so that the pressing plate 50 can form a close contact state with the first retaining edge 12, and the flexible waterproof cushion layer 40 protruding from the first retaining edge 12 is pressed tightly so that it is tightly confined to the inner side of the waterproof card groove 14, thereby achieving a better waterproof effect.

[0053] Preferably, Figure 4 , 5 As shown in Figures 6 and 7, at least two positioning posts 15 are provided on the inner wall of the printer housing 10 and around the waterproof card slot 14. A positioning slot 53 opposite to the positioning post 15 is provided on the horizontal section 52 of the pressure plate 50. In this embodiment, two positioning posts 15 are provided and are respectively arranged on the left and right sides of the waterproof card slot 14. Therefore, through the limiting cooperation between the positioning posts 15 and the positioning slot 53, the installation and fixation of the pressure plate 50 can be fully guided, so that it can realize the alignment and the pressing process of the flexible waterproof cushion layer 40 more smoothly.

[0054] Preferably, Figure 4 , 5As shown in Figures 6 and 7, a group of locking structures 16 and a group of supporting structures 17 are provided on the inner wall of the printer housing 10 and at the diagonal position of the installation slot 11. The locking structure 16 is used to lock and fix the PCB board 20, and the supporting structure 17 is used to support one side of the PCB board 20. In this embodiment, one group of locking structures 16 and the other group of supporting structures 17 are respectively arranged at the positions of the two diagonals outside the waterproof card slot 14, so that the locking structure 16 can conveniently realize the installation and fixation of the PCB board 20, thereby cooperating to realize the compression process of the flexible waterproof cushion layer 40, and the supporting structure 17 can further support the PCB board 20, so that the two side corners are in a balanced state, and the compression and fixation of the flexible waterproof cushion layer 40 is better realized.

[0055] Preferably, Figure 7 As shown, a notch groove 18 is provided on one side of the second stop edge 13, and a limiting portion 38 that cooperates with the notch groove 18 is provided on one side of the button structure 30. Therefore, through the cooperation between the notch groove 18 and the limiting portion 38, the positioning between the button structure 30 and the printer housing 10 can be further facilitated, so that the button structure 30 can be easily installed.

[0056] The beneficial effects of the utility model are as follows:

[0057] The utility model innovatively designs the paper ejection button in the prior art, and effectively solves the shortcomings of the traditional button structure 30 in terms of waterproof and dustproof. The structure mainly includes key components such as the printer housing 10, the PCB board 20, the button structure 30, the flexible waterproof cushion layer 40 and the pressing plate 50. The components work together to jointly construct a button system that maintains convenient operation and has excellent waterproof and dustproof performance.

[0058] Specifically, the mounting slot 11 provided on the printer housing 10 provides a movable space for the key structure 30, and the pressing contact 21 on the PCB board 20 accurately matches the contact surface of the key structure 30, ensuring the sensitivity and accuracy of the key operation. The flexible waterproof cushion layer 40, as the core of the waterproof structure, cleverly covers the inner side of the printer housing 10 and fits tightly with the mounting slot 11, forming an effective waterproof barrier. The pressure plate 50 applies pressure to the flexible waterproof cushion layer 40, so that its inner surface fits tightly with the inner surface of the printer housing 10, further enhancing the waterproof effect, while also ensuring the stability and reliability of the key structure 30.

[0059] In addition, the utility model also adopts a series of optimized designs, such as setting the first stop edge 12, the second stop edge 13 and the waterproof card slot 14, the limiting cooperation between the limit card edge 37 and the second stop edge 13, the precise alignment of the alignment groove 43 recessed on the top 42 and the pressing contact 21, and the inverted "L"-shaped structure of the pressure plate 50 and the auxiliary fixation of the positioning column 15, so that the overall structure is more compact and stable, and at the same time ensures the effective sealing of the waterproof cushion layer to prevent moisture and dust from penetrating into the interior of the printer through any gaps.

[0060] In summary, the waterproof structure for the printer paper output button provided by the utility model not only significantly improves the dustproof and waterproof performance of the printer, extends the service life of the equipment, reduces maintenance costs, but also maintains the convenience and comfort of button operation, greatly improves the user experience, and has important application value and market prospects.

[0061] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A waterproof structure for a paper output button of a printer, characterized in that: include: A printer housing (10) has an outer surface provided with a penetrating mounting groove (11); A PCB board (20) is detachably fixed to the inner side of the printer housing (10) and is provided with a pressing contact (21) at a position opposite to the mounting groove (11); A key structure (30) is movably disposed in the mounting groove (11), and its bottom (41) forms a contact surface that cooperates with the pressing contact (21); A flexible waterproof cushion layer (40) covers the mounting groove (11) along the inner side of the printer housing (10); The pressing plate (50) is arranged between the flexible waterproof cushion layer (40) and the PCB board (20) and is used to transmit the pressure of the PCB board (20) so as to press the inner surface of the flexible waterproof cushion layer (40) against the inner surface of the printer housing (10).

2. A waterproof structure for a paper output button of a printer according to claim 1, characterized in that: A closed first retaining edge (12) is arranged on the inner surface of the printer housing (10) and around the outer peripheral side of the mounting groove (11); a closed second retaining edge (13) is arranged on the inner surface of the printer housing (10) and around the edge of the mounting groove (11); a waterproof card slot (14) is formed between the first retaining edge (12), the second retaining edge (13) and the inner side wall of the printer housing (10); and the second retaining edge (13) has a smaller vertical extension height than the first retaining edge (12).

3. A waterproof structure for a paper output button of a printer according to claim 2, characterized in that: A circle of limiting clamping edge (37) which cooperates with the second stop edge (13) in limiting manner is provided on the circumferential side of the bottom (41) of the button structure (30).

4. A waterproof structure for a paper output button of a printer according to claim 2, characterized in that: The flexible waterproof cushion layer (40) comprises a bottom (41) covering the waterproof slot (14) and a top (42) protruding downward along the center of the bottom (41), and the bottom (41) and the top (42) are in an integrated transition.

5. A waterproof structure for a paper output button of a printer according to claim 4, characterized in that: A positioning groove (43) for the pressing contact (21) to be embedded is recessed at a position of the top (42) opposite to the pressing contact (21), and the contact surface of the key structure (30) is movably abutted against the other side of the positioning groove (43).

6. A waterproof structure for a paper ejection button of a printer according to claim 4, characterized in that: The bottom (41) has a thickness in the vertical direction that is greater than that of the first stop edge (12).

7. A waterproof structure for a paper output button of a printer according to claim 2, characterized in that: The pressing plate (50) is in the shape of a closed ring with an inverted "L"-shaped cross section and is arranged around the circumference of the installation groove (11), and comprises a vertical section (51) in contact with the PCB board (20) and a horizontal section (52) extending horizontally along the top (42) of the vertical section (51), wherein the inner side wall of the horizontal section (52) covers the first stop edge (12) and at least a portion of the waterproof card slot (14).

8. A waterproof structure for a paper ejection button of a printer according to claim 7, characterized in that: At least two positioning posts (15) are provided on the inner side wall of the printer housing (10) and around the waterproof card slot (14), and a positioning slot (53) is provided through the horizontal section (52) of the pressure plate (50) and is opposite to the positioning posts (15).

9. A waterproof structure for a paper ejection button of a printer according to claim 1, characterized in that: A group of locking structures (16) and a group of supporting structures (17) are provided on the inner side wall of the printer housing (10) and at diagonal positions of the mounting slot (11); the locking structures (16) are used to lock and fix the PCB board (20); and the supporting structures (17) are used to support one side of the PCB board (20).

10. A waterproof structure for a paper ejection button of a printer according to claim 2, characterized in that: A notch groove (18) is provided on one side of the second stop edge (13), and a limiting portion (38) that cooperates with the notch groove (18) is provided on one side of the key structure (30).

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