One-card system for dining in the cafeteria

Abstract

This utility model discloses a canteen dining card system, solving the problem of inconvenient angle and height adjustment in existing all-in-one machines. It includes a counterweight chassis, a column, a cantilever assembly, and a display screen assembly. A servo motor inside the column and counterweight chassis is mechanically connected via a synchronous belt drive mechanism. A sliding groove is provided on the column, and the cantilever assembly is slidably installed in this groove. A handwheel is threadedly connected to a screw and adjusts the relative position of a damping element and the cylinder at the end of the cantilever arm. Both the damping element and the cylinder are located within a cavity in the column, and the height of the cantilever assembly is locked by the damping element's contact. The display screen assembly is hinged to the cantilever assembly via a mounting block. This device achieves height adjustment of the display screen through a height adjustment structure between the cantilever assembly and the column, meeting the installation needs of different platforms, desktops, and windows, thus making its use more diverse.

Description

Technical Field

[0001] This utility model relates to the field of cafeteria food check-in equipment technology. Background Technology

[0002] The all-in-one card system for cafeterias is a small, consumer-grade device. Currently, depending on the usage scenario, it offers various payment methods such as card swiping and facial recognition. To meet these requirements, current all-in-one machines are fixedly installed on the window glass, lacking angle adjustment. Users must have their face close to the camera area of ​​the device, resulting in a fixed usage. For example, CN210920863U discloses an all-in-one card system installation structure, belonging to the field of all-in-one card systems. This structure includes the all-in-one card system and a mounting frame, which is installed on a school wall or cafeteria glass panel; it is directly fixed to the wall or glass panel with bolts. This fixed installation structure has no adjustable height or angle and cannot move with the user's face. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a canteen dining card system that solves the problem of inconvenient adjustment of angle and height in existing integrated machines.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: A canteen dining card system includes a counterweight chassis, a column, a cantilever assembly, and a display screen assembly. The column is characterized in that its lower end is rotatably mounted on the counterweight chassis and mechanically connected to a servo motor inside the chassis via a synchronous belt drive mechanism. A sliding groove is provided on the column, and the cantilever assembly is slidably mounted in this groove. The cantilever assembly includes a cantilever rod, a damping element, a screw, and a handwheel. The damping element and the screw are located within a groove in the cantilever rod. The handwheel is threadedly connected to the screw and adjusts the relative position of the damping element and the cylinder at the end of the cantilever rod. Both the damping element and the cylinder are located within a cavity in the column, and the height of the cantilever assembly is locked by the damping element's contact. The display screen assembly is hinged to the cantilever assembly via a mounting block.

[0005] Furthermore, a wing is provided on the front side of the cylinder, and a neck is formed between the wing and the cylinder, with the neck slidingly engaged with the groove.

[0006] Furthermore, the damping element is a cylindrical rubber element.

[0007] Furthermore, the damping component is provided with a joint mounting groove, which is in movable engagement with the ball joint at the end of the screw.

[0008] Furthermore, the handwheel is installed in the handwheel mounting groove in the middle section of the cantilever member.

[0009] Furthermore, the mounting block is secured to the back of the display assembly by fastening screws.

[0010] Furthermore, the lower end of the column is rotatably mounted on the counterweight chassis via a pair of bearing assemblies.

[0011] Furthermore, the counterweight chassis is a flat component with a triangular, rectangular, or circular outline.

[0012] Furthermore, the cantilever member is an aluminum alloy casting component.

[0013] The beneficial effects of this utility model are: This device achieves height adjustment of the display screen through the height adjustment structure between the cantilever assembly and the column, so as to meet the installation needs of different platforms, desktops and windows, making the usage scenarios more diversified.

[0014] This device uses a servo motor and a synchronous belt to adjust the left and right angles, and with the help of a control system, it can track faces, making the device faster. Attached Figure Description

[0015] Figure 1 This is a three-dimensional view of the device.

[0016] Figure 2 This is a side view of the device (showing the pitch angle).

[0017] Figure 3 This is a perspective view of the device (partial cross-section of the counterweight chassis).

[0018] Figure 4 This represents the combined state of the cantilever assembly and the display assembly.

[0019] Figure 5 This is a demonstration of the combined structure of damping components, screws, and handwheels.

[0020] Figure 6 for Figure 4 Mid-level cross-section display.

[0021] Figure 7 This is a 3D view of the cantilever assembly.

[0022] In the picture: 10 Counterweight chassis, 11 Servo motor, 12 Synchronous belt, 20 Column, 30 Cantilever assembly, 31 Cantilever rod, 311 Cylinder, 312 Wing, 313 Neck, 314 Slot, 315 Handwheel mounting slot, 316 Hinge joint, 32 Damping element, 33 Screw, 331 Articulated ball, 34 Handwheel, 40 Display assembly, 50 Mounting block, 51 Hinge connection. Detailed Implementation

[0023] The description in this embodiment is defined based on the usage state of the device. For example, up and down refers to the height direction, and left and right refer to the illustrated state of the device.

[0024] The device includes a counterweight chassis 10, a column 20, a cantilever assembly 30, and a display screen assembly 40. The display screen assembly 40 has three-dimensional spatial adjustment functions, including pitch adjustment, height adjustment, and left / right angle adjustment. The following description, in conjunction with the appendix to the instruction manual, will further elaborate on these functions. Figure 1 To be continued Figure 7 A more detailed description of the structure and composition of this device is provided.

[0025] The counterweight chassis 10 is a flat component with a specific thickness, and can have a triangular, rectangular, or circular outline. For example, this embodiment shows a triangular counterweight chassis 10. The counterweight chassis 10 has two pairs of paired bearing mounting slots. A vertically positioned column 20 is mounted in one pair of bearing mounting slots. The lower section of the column 20 is rotatably mounted on the counterweight chassis 10 via a pair of vertically positioned bearing assemblies, giving it rotational freedom. A synchronous pulley is fixedly mounted on the lower section of the column 20. An axle is mounted in the other pair of bearing mounting slots, and a synchronous pulley is fixedly mounted on the axle. A servo motor 11 is also installed within the counterweight chassis 10 housing. The servo motor 11 is mounted inside the housing, and a synchronous pulley is fixedly mounted on the motor shaft. A synchronous belt 12 is fitted onto the three synchronous pulleys. The servo motor 11 drives the column 20 to rotate, which also enables the left-right angle adjustment of the display screen assembly 40.

[0026] Furthermore, the aforementioned column 20 is a hollow tube circular column 20 made of aluminum alloy profile. The column 20 has milled grooves to form vertically arranged sliding grooves, which are used for guiding vertical sliding.

[0027] The cantilever assembly 30 includes a cantilever rod 31, a damping element 32, a screw 33, a handwheel 34, etc. The cantilever rod 31 is an aluminum alloy casting component, consisting of three sections: left, middle, and right. The rear end of the cantilever rod 31 is a cylinder 311, and the front side of the cylinder 311 is provided with an arc-shaped wing 312. Between the wing 312 and the cylinder 311 is a neck 313. During installation, the cylinder 311 is inserted into the cavity of the column 20, and the neck 313 is in sliding fit with the groove. The wing 312 is positioned on the outside of the column 20, so that the cantilever rod 31 and the column 20 form a sliding connection. At the rear end of the cantilever member 31, a horizontal slot 314 is provided across half the length of the cantilever member 31. This slot 314, when horizontal, passes through the cantilever member 31 and is used to install the damping element 32, the screw 33, and the handwheel 34. More specifically, the damping element 32 is preferably a rubber element with a cylindrical structure. A joint mounting groove is provided in this cylindrical damping element 32, which movably engages with the ball joint 331 at the end of the screw 33. After installation, the screw 33 can move relative to the damping element 32. The cantilever member 31 has a vertically arranged handwheel mounting groove 315 in the middle section for accommodating the handwheel 34. After the handwheel 34 is installed, the screw 33 and the handwheel 34 are threaded together. By rotating the handwheel 34, the screw 33 can be driven to rotate, thereby driving the damping member 32 to move horizontally. During the operation of the damping member 32, the damping member 32 abuts against the inner wall of the cavity of the column 20 to fix the end of the cantilever member 31.

[0028] Furthermore, the front end of the aforementioned cantilever member 31 is provided with a hinge joint 316, which has a shaft hole. A mounting block 50 is installed at the hinge joint 316 via a hinge connection 51. In this embodiment, the hinge connection 51 consists of an optical axis bolt and a fastening handle, allowing for loosening and manual adjustment. The mounting block 50 is fixed to the back side of the display assembly 40 by fastening screws, thus securing it. This forms a pitch angle adjustment mechanism between the display assembly 40 and the cantilever member 31.

[0029] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Without departing from the spirit of the present utility model, all modifications and improvements to the present utility model by those skilled in the art should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A canteen dining card system, comprising a counterweight chassis (10), a column (20), a cantilever assembly (30), and a display screen assembly (40), characterized in that: The lower end of the column (20) is rotatably mounted on the counterweight chassis (10) and is mechanically connected to the servo motor (11) inside the counterweight chassis (10) via a synchronous belt drive mechanism; a sliding groove is provided on the column (20) and a cantilever assembly (30) is slidably mounted in the groove. The cantilever assembly (30) includes a cantilever rod (31), a damping element (32), a screw (33), and a handwheel (34), wherein the damping element (32) and the screw (33) are located on the cantilever. In the groove (314) of the arm member (31), the handwheel (34) is threadedly connected to the screw (33) and adjusts the relative position of the damping member (32) and the cylinder (311) at the end of the cantilever member. The damping member (32) and the cylinder (311) are both located in the cavity of the column, and the height position of the cantilever assembly (30) is locked by the abutment of the damping member (32). The display screen assembly (40) is hinged to the cantilever assembly (30) through the mounting block (50).

2. The canteen dining card system according to claim 1, characterized in that, The cylinder (311) has a wing (312) on its front side, and a neck (313) is located between the wing (312) and the cylinder (311), and the neck (313) is in sliding fit with the groove.

3. The canteen dining card system according to claim 2, characterized in that, The damping element (32) is a cylindrical rubber element.

4. The canteen dining card system according to claim 3, characterized in that, The damping component (32) is provided with a joint mounting groove, which is in movable engagement with the joint ball (331) at the end of the screw (33).

5. The canteen dining card system according to claim 4, characterized in that, The handwheel (34) is installed in the handwheel mounting groove (315) in the middle section of the cantilever member (31).

6. The canteen dining card system according to claim 1, characterized in that, The mounting block (50) is fixed to the back of the display assembly (40) by fastening screws.

7. The canteen dining card system according to claim 1, characterized in that, The lower end of the column (20) is rotatably mounted on the counterweight chassis (10) via a pair of bearing assemblies.

8. The canteen dining card system according to claim 1, characterized in that, The counterweight chassis (10) is a flat component with a triangular, rectangular or circular outline.

9. The canteen dining card system according to claim 1, characterized in that, The cantilever member (31) is an aluminum alloy casting component.

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