A cafeteria POS machine with an adjustable display angle

Abstract

This invention belongs to the field of POS machine technology, specifically a cafeteria POS machine with an adjustable display screen angle. It includes a main body with a horizontally positioned card-swiping area in the center. As the card-swiping area moves forward and backward, the height of the upper surface of the main body gradually decreases, forming an inclined main display area and a secondary display area. The main display area has a main display screen and a keyboard, and the secondary display area has a groove. This invention utilizes a pushing air guide device to push a cylinder, gradually bringing the bottom of the secondary display screen to the same height as the card-swiping area. The secondary display screen has a suitable tilt angle, perpendicular to the line of sight, making it convenient for consumers to view the data. Consumers can place their cards on the card-swiping area and the secondary display screen, increasing the card placement area and reducing the chance of the card falling. After swiping, the pushing air guide device returns to its original position, releasing gas from the air vent, which pushes the card off the secondary display screen for subsequent use.

Description

Technical Field

[0001] This invention belongs to the field of POS machine technology, and specifically relates to a cafeteria POS machine with an adjustable display screen angle. Background Technology

[0002] The cafeteria POS machine, also known as a cafeteria card reader, is a new generation of smart card equipment developed to meet the requirements of electronic, standardized, and convenient consumption. It replaces the traditional cash payment method. When dining in the cafeteria or restaurant, users only need to swipe their cards within the effective range of the POS machine's sensing area; once the POS machine recognizes the transaction, the payment is completed. This eliminates the need for cash transactions, avoiding the inconvenience of giving change and the hygiene issues associated with cross-contamination associated with cash transactions. It is convenient for both users and managers, facilitating the collection, statistics, and information processing of consumption data.

[0003] The existing cafeteria POS machine has its main display screen and secondary display screen located on both sides and tilted, with the card swiping area in the middle. The middle is higher and gradually decreases towards the main and secondary display screens, forming a trapezoidal shape. With this configuration, the card is placed in the card swiping area, which is relatively small. When placing or taking the card, it is easy for the card to fall out of the card swiping area, affecting the efficiency of card swiping.

[0004] Therefore, it is necessary to invent a cafeteria POS machine with an adjustable display screen angle to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a cafeteria POS machine with an adjustable display screen angle, thereby resolving the issues raised in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a canteen POS machine with an adjustable display screen angle, comprising a main body, a card swiping area horizontally arranged in the middle of the main body, and an inclined main display area and a secondary display area formed by the gradual decrease in height of the upper surface of the main body as it moves forward and backward along the card swiping area. The surface of the main display area is provided with a main display screen and a keyboard. The secondary display area has a groove, and a secondary display screen is arranged inside the groove. The secondary display screen has the same inclination as the secondary display area. The top of the secondary display screen is hinged to the inner wall of the groove. A guide groove plate is provided on the inclined surface at the bottom of the secondary display screen. An embedded roller is arranged inside the guide groove plate. A pushing and guiding air device is provided at the bottom of the embedded roller. The pushing and guiding air device is used to push the secondary display screen to gradually make its bottom end flush with the height of the card swiping area. An air guide hole is provided in the card swiping area, and the pushing and guiding air device generates gas that is ejected from the air guide hole.

[0007] Preferably, the pushing and guiding air device includes a pushing cylinder, a pushing plate is hinged to the outer side of the telescopic end of the pushing cylinder, a strip groove is provided at the hinge of the pushing plate so that the pushing cylinder pushes the pushing plate, a fixed shaft is inserted through the middle of the pushing plate, a fixed tube is sleeved on the outer side of the fixed shaft, a support rod is fixedly connected to the bottom end of the fixed tube, one end of the pushing plate is located directly below the air guiding hole, and a compression cylinder is provided between the pushing plate and the air guiding hole, a piston is provided inside the compression cylinder, the bottom of the piston contacts the end of the pushing plate, and a return spring is provided on the top of the piston and connected to the top of the compression cylinder.

[0008] Preferably, the fixed shaft is fixedly connected to the push plate, and both ends of the fixed shaft are provided with downwardly inclined extension rods. An insertion rod is fixedly connected to the end of the extension rod, and a sleeve is sleeved on the outside of the insertion rod. An annular membrane is provided between the sleeve and the extension rod, and a sliding tube is sleeved on the outside of the sleeve. A support ball is provided at the end of the sleeve, and the sleeve, the support ball and the annular membrane are connected.

[0009] Preferably, the inner diameter of the top of the sliding tube gradually increases towards the annular membrane.

[0010] Preferably, a lower extension rod is fixedly connected to the bottom of the piston, a horizontal plate is provided at the bottom of the lower extension rod, one end of the push plate is located at the bottom of the horizontal plate and in contact with it, and a roller is provided at the contact position between the push plate and the horizontal plate.

[0011] Preferably, the air vent is located near the main display area and far from the secondary display area.

[0012] Preferably, the top of the card swiping area is provided with two sets of side blocking components, which are respectively close to the two sides of the card swiping area.

[0013] Preferably, the rear side of the main body is hinged with a protective cover. The protective cover is divided into three parts and respectively fits the card swiping area, the main display area and the secondary display area. A portion of the protective cover is recessed to form a convex cover. The convex cover matches the side baffle assembly so that the side baffle assembly can enter the interior of the convex cover.

[0014] The technical effects and advantages of this invention are as follows:

[0015] 1. This invention utilizes a push-up air guide device to push a cylinder, gradually aligning the bottom of the secondary display screen with the card reader area. As the secondary display screen is pushed, its tilt angle gradually changes, eventually reaching a suitable angle perpendicular to the line of sight, facilitating easy viewing of the data on the secondary display screen for consumers. After the secondary display screen is adjusted, consumers can place their cards on the card reader area and the secondary display screen, increasing the card placement area and reducing the chance of the card falling off. Simultaneously, after card swiping, the push-up air guide device returns to its original position. During this return, air is expelled from the air guide hole, which pushes the card off the secondary display screen for convenient use by subsequent personnel.

[0016] 2. This invention uses a cylinder to drive a push plate to deflect, which in turn drives a fixed shaft to rotate. The bottom ends of the extension rods at both ends of the fixed shaft gradually rotate upward and approach the secondary display screen. Since the sleeve is higher than the extension rods, the sleeve slides on the insertion rod to compress the annular film. At the same time, the sliding tube also moves on the sleeve, compressing the annular film again. This allows the gas inside the annular film to enter the support ball through the sleeve, causing the support ball to expand. The expanded support ball supports the secondary display screen, and the support ball can deform, allowing the secondary display screen to deform slightly downward, thus providing better protection for the secondary display screen. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional schematic diagram of the canteen POS machine with an adjustable display screen angle according to the present invention;

[0019] Figure 2 This is a side sectional view of the main body of the present invention;

[0020] Figure 3 In this invention Figure 2 Enlarged view of part A;

[0021] Figure 4 In this invention Figure 2 Enlarged view of part B;

[0022] Figure 5 This is a schematic diagram of the fixed shaft structure in this invention;

[0023] Figure 6 This is an exploded view of the sleeve, sliding tube, and support ball in this invention.

[0024] In the diagram: 1. Main body; 2. Main display screen; 3. Keyboard; 4. Groove; 5. Secondary display screen; 6. Guide groove plate; 7. Embedded roller; 8. Pushing air guiding device; 81. Pushing cylinder; 82. Pushing plate; 83. Strip groove; 84. Fixed shaft; 85. Fixed tube; 86. Support rod; 87. Compression cylinder; 88. Piston; 89. Return spring; 9. Air guide hole; 10. Extension rod; 11. Insert rod; 12. Sleeve; 13. Annular membrane; 14. Sliding tube; 15. Support ball; 16. Lower extension rod; 17. Horizontal plate; 18. Side baffle assembly; 19. Protective cover; 20. Protruding cover. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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.

[0026] In the description of this invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, in the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] This invention provides, for example Figure 1-6 The cafeteria POS machine with an adjustable display screen angle is shown. It includes a main body 1, with a card swiping area horizontally arranged in the middle of the main body 1. As the card swiping area moves forward and backward, the height of the upper surface of the main body 1 gradually decreases, forming an inclined main display area and a secondary display area. The surface of the main display area is provided with a main display screen 2 and a keyboard 3. The secondary display area has a groove 4, and a secondary display screen 5 is arranged inside the groove 4. The secondary display screen 5 has the same inclination as the secondary display area. The top of the secondary display screen 5 is hinged to the inner wall of the groove 4. A guide groove plate 6 is provided on the inclined surface at the bottom of the secondary display screen 5. An embedded roller 7 is arranged inside the guide groove plate 6. A pushing and guiding air device 8 is provided at the bottom of the embedded roller 7. The pushing and guiding air device 8 is used to push the secondary display screen 5 so that its bottom end is gradually aligned with the height of the card swiping area. An air guide hole 9 is provided in the card swiping area. The pushing and guiding air device 8 generates gas and sprays it out from the air guide hole 9.

[0028] The main display screen 2 is used by staff to observe the data when operating the keyboard 3, while the secondary display screen 5 is used by consumers. After the staff finishes operating the keyboard 3, the air-guiding device 8 is activated, pushing the cylinder 81 to gradually align the bottom of the secondary display screen 5 with the card-swiping area. During the pushing process, the tilt angle of the secondary display screen 5 gradually changes, reaching a suitable tilt angle that is perpendicular to the line of sight, making it convenient for consumers to view the data on the secondary display screen 5. After the secondary display screen 5 is adjusted, consumers can place their cards on the card-swiping area and the secondary display screen 5, increasing the card placement area and reducing the chance of the card falling. After swiping the card, the air-guiding device 8 is pushed back to its original position. During the return, air is expelled from the air vent 9, which pushes the card off the secondary display screen 5 for subsequent use.

[0029] Refer to the instruction manual appendix Figure 1-5 The pushing and guiding air device 8 includes a pushing cylinder 81, which is connected to the embedded roller 7. A pushing plate 82 is hinged to the outer side of the telescopic end of the pushing cylinder 81. A strip groove 83 is provided at the hinge of the pushing plate 82 so that the pushing cylinder 81 pushes the pushing plate 82. A fixed shaft 84 is inserted through the middle of the pushing plate 82. A fixed tube 85 is sleeved on the outer side of the fixed shaft 84. A support rod 86 is fixedly connected to the bottom end of the fixed tube 85. One end of the pushing plate 82 is located directly below the air guide hole 9, and a compression cylinder 87 is provided between the pushing plate 82 and the air guide hole 9. A piston 88 is provided inside the compression cylinder 87. The bottom of the piston 88 contacts the end of the pushing plate 82. A return spring 89 is provided on the top of the piston 88 and connected to the top of the compression cylinder 87.

[0030] The process of adjusting the secondary display screen 5 using the air-guiding device 8 is as follows: The pushing cylinder 81 extends, pushing the embedded roller 7 to move within the guide groove plate 6. Simultaneously, the bottom of the secondary display screen 5 gradually aligns with the card-swiping area, facilitating card placement. During this process, one end of the pushing plate 82 deflects upwards, and the other end of the pushing plate 82 no longer pushes the piston 88 to press. The restoring force of the return spring 89 and the weight of the piston 88 allow the piston 88 to move downwards to its lowest position. When the pushing cylinder 81 returns to its original position, it resumes its upward movement. The push plate 82 pushes the piston 88 upward, causing the air on the piston 88 to be forced out through the air guide hole 9, which pushes the card located on the air guide hole 9. Since part of the card is suspended above the secondary display screen 5, the card is pushed by the gas and slides towards the secondary display screen 5. The card slides down faster, making it easier for the next person to swipe the card. Alternatively, the card can be pressed into the card swiping area before swiping. When the cylinder 81 is pushed to work, the piston 88 moves down, and a negative pressure is generated at the top of the piston 88, which attracts the card to the card swiping area, making the application more widespread.

[0031] Refer to the instruction manual appendix Figure 2 , Figure 3 , Figure 5 and Figure 6 The fixed shaft 84 is fixedly connected to the push plate 82. Both ends of the fixed shaft 84 are provided with downwardly inclined extension rods 10. The end of the extension rod 10 is fixedly connected to the insertion rod 11. The outside of the insertion rod 11 is sleeved with a sleeve 12. An annular membrane 13 is provided between the sleeve 12 and the extension rod 10. A sliding tube 14 is sleeved on the outside of the sleeve 12. A support ball 15 is provided at the end of the sleeve 12. The sleeve 12, the support ball 15 and the annular membrane 13 are connected.

[0032] When the push cylinder 81 pushes the bottom of the sub-display screen 5 to the same height as the card reader area, the bottom sides of the sub-display screen 5 are suspended in the air. Therefore, when the push cylinder 81 drives the push plate 82 to deflect, the push rod drives the fixed shaft 84 to rotate. The bottom ends of the extension rods 10 at both ends of the fixed shaft 84 gradually rotate upward and approach the sub-display screen 5. The sleeve 12 is higher than the extension rods 10. Therefore, the sleeve 12 slides on the insertion rod 11 to squeeze the annular film 13. At the same time, the sliding tube 14 also moves on the sleeve 12 to squeeze the annular film 13 again. This causes the gas in the annular film 13 to enter the support ball 15 through the sleeve 12, causing the support ball 15 to expand. The expanded support ball 15 supports the sub-display screen 5, and the support ball 15 can deform, allowing the sub-display screen 5 to deform slightly downward, providing better protection for the sub-display screen 5.

[0033] Refer to the instruction manual appendix Figure 6 The inner diameter of the top end of the sliding tube 14 gradually increases towards the annular membrane 13.

[0034] The sliding tube 14 is conveniently slidably sleeved onto the annular membrane 13.

[0035] Refer to the instruction manual appendix Figure 4 The piston 88 is fixedly connected to a lower extension rod 16 at its bottom. A horizontal plate 17 is provided at the bottom of the lower extension rod 16. One end of the push plate 82 is located at the bottom of the horizontal plate 17 and is in contact with it. A roller is provided at the contact position between the push plate 82 and the horizontal plate 17.

[0036] Since the position of the push plate 82 on the surface of the horizontal plate 17 is changing, the friction between the push plate 82 and the horizontal plate 17 can be reduced by the roller. At the same time, the horizontal plate 17 and the lower extension rod 16 are arranged such that the horizontal plate 17 is located on the outside of the bottom of the compression cylinder 87, and the length of the horizontal plate 17 is large enough to facilitate the movement of one end of the push plate 82 at the bottom of the horizontal plate 17. The lower extension rod 16 can ensure that the piston 88 is always inside the compression cylinder 87, and the push plate 82 ensures that the piston 88 is not blocked by the bottom end of the compression cylinder 87 when it moves.

[0037] Refer to the instruction manual appendix Figure 1 The air vent 9 is located near the main display area and far from the secondary display area.

[0038] The above settings enable the gas expelled from the air vent 9 to exert a greater pushing force on the card.

[0039] Refer to the instruction manual appendix Figure 1 The top of the card swiping area is provided with two sets of side blocking components 18, which are respectively close to the two sides of the card swiping area.

[0040] The two side guard components 18 can block the card between them, making the card placement more accurate.

[0041] Refer to the instruction manual appendix Figure 1 The main body 1 is hinged to a protective cover 19 on the rear side. The protective cover 19 is divided into three parts, which are respectively attached to the card swiping area, the main display area and the secondary display area. A part of the middle of the protective cover 19 is recessed to form a convex cover 20. The convex cover 20 matches the side blocking assembly 18 so that the side blocking assembly 18 can enter the interior of the convex cover 20.

[0042] The protective cover 19 can cover the main display screen 2, the secondary display screen 5, and the keyboard 3 after use, thus containing them and preventing damage.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A canteen POS machine with an adjustable display screen angle, comprising a main body (1), wherein a card swiping area is horizontally arranged in the middle of the main body (1), and the height of the upper surface of the main body (1) gradually decreases as it moves forward and backward along the card swiping area to form an inclined main display area and a secondary display area, wherein a main display screen (2) and a keyboard (3) are provided on the surface of the main display area, characterized in that: The sub-display area has a groove (4), and a sub-display screen (5) is provided inside the groove (4). The sub-display screen (5) is tilted at the same angle as the sub-display area. The top of the sub-display screen (5) is hinged to the inner wall of the groove (4). A guide groove plate (6) is provided on the bottom inclined surface of the sub-display screen (5). An embedded roller (7) is provided inside the guide groove plate (6). A pushing air guide device (8) is provided at the bottom of the embedded roller (7). The pushing air guide device (8) is used to push the sub-display screen (5) so that the bottom end is level with the card swiping area. An air guide hole (9) is provided in the card swiping area. The pushing air guide device (8) generates gas and sprays it out from the air guide hole (9). The pushing and guiding air device (8) includes a pushing cylinder (81), a pushing plate (82) is hinged to the outside of the telescopic end of the pushing cylinder (81), a strip groove (83) is provided at the hinge of the pushing plate (82) so that the pushing cylinder (81) pushes the pushing plate (82), a fixed shaft (84) is inserted through the middle of the pushing plate (82), a fixed tube (85) is sleeved on the outside of the fixed shaft (84), a support rod (86) is fixedly connected to the bottom end of the fixed tube (85), one end of the pushing plate (82) is located directly below the air guiding hole (9), and a compression cylinder (87) is provided between the pushing plate (82) and the air guiding hole (9). A piston (88) is provided inside the compression cylinder (87), the bottom of the piston (88) is in contact with the end of the pushing plate (82), and a return spring (89) is provided on the top of the piston (88) and connected to the top of the compression cylinder (87). The fixed shaft (84) is fixedly connected to the push plate (82). Both ends of the fixed shaft (84) are provided with downwardly inclined extension rods (10). The end of the extension rod (10) is fixedly connected with a plug rod (11). A sleeve (12) is sleeved on the outside of the plug rod (11). An annular membrane (13) is provided between the sleeve (12) and the extension rod (10). A sliding tube (14) is sleeved on the outside of the sleeve (12). A support ball (15) is provided at the end of the sleeve (12). The sleeve (12), the support ball (15) and the annular membrane (13) are connected.

2. The canteen POS machine with an adjustable display screen angle according to claim 1, characterized in that: The inner diameter of the top end of the sliding tube (14) gradually increases towards the annular membrane (13).

3. The canteen POS machine with an adjustable display screen angle according to claim 1, characterized in that: The piston (88) is fixedly connected to a lower extension rod (16) at the bottom. A horizontal plate (17) is provided at the bottom of the lower extension rod (16). One end of the push plate (82) is located at the bottom of the horizontal plate (17) and is in contact with it. A roller is provided at the contact position between the push plate (82) and the horizontal plate (17).

4. The canteen POS machine with an adjustable display screen angle according to claim 1, characterized in that: The air vent (9) is close to the main display area and far from the secondary display area.

5. The canteen POS machine with an adjustable display screen angle according to claim 1, characterized in that: Two sets of side blocking components (18) are provided at the top of the card swiping area, and the two sets of side blocking components (18) are respectively close to the two sides of the card swiping area.

6. The canteen POS machine with an adjustable display screen angle according to claim 5, characterized in that: The main body (1) is hinged to a protective cover (19) on the rear side. The protective cover (19) is divided into three parts, which are respectively attached to the card swiping area, the main display area and the secondary display area. A part of the middle of the protective cover (19) is recessed to form a convex cover (20). The convex cover (20) matches the side blocking assembly (18) so that the side blocking assembly (18) enters the interior of the convex cover (20).

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