Self-service cash register with automatic door opening and anti-rebound mechanism
By designing a limit post and spring anti-rebound mechanism in the self-service checkout machine, the problem of door rebound is solved, achieving stable operation of the equipment and ease of operation.
Patent Information
- Application Number
- CN202522556121.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-02
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-12-02
AI Technical Summary
The doors of self-service checkout machines are prone to springing back during use, which affects the user experience and may lead to equipment damage or safety hazards.
A self-service checkout machine with an anti-rebound mechanism was designed. Through the cooperation of a limit post and a spring, the front shell of the self-service checkout machine is automatically locked when rotated to 90° to prevent rebound.
It effectively prevents the self-service checkout machine door from springing back, ensuring stable operation of the equipment and improving the smoothness of opening and closing the door and the ease of operation.
Smart Images
Figure CN224682698U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of self-service checkout technology, specifically, it relates to a self-service checkout with an automatic anti-rebound mechanism for opening the door. Background Technology
[0002] With the increasing demand for self-service in shopping malls, supermarkets, convenience stores, and other venues, self-checkout machines have become widely used as a device to improve work efficiency and reduce manual labor. They allow customers to independently scan goods, pay bills, and complete transactions, thereby speeding up queues and improving the user experience. One of the core functions of self-checkout machines is automated payment. Traditional payment methods require manual operation, such as cash transactions, card payments, and QR code payments. Self-checkout machines are typically equipped with the following payment technologies: customers scan the barcodes or QR codes of goods, and the system automatically reads the product information and calculates the total price. Payment can be completed via bank cards or mobile payments (such as Alipay and WeChat Pay), providing a contactless payment experience and improving the convenience and security of payments. Some self-checkout machines still support cash payment functions, including the acceptance, storage, and change of coins and banknotes.
[0003] During the use of self-service checkout machines, operators may cause the door to close rapidly or rebound abnormally for various reasons. This rebound phenomenon not only affects the user experience but may also lead to equipment damage or safety hazards. Therefore, designing an automatic door mechanism that can prevent the door from rebounding has become an important technical requirement for self-service checkout machines. Utility Model Content
[0004] In view of this, the present invention provides a self-service checkout machine with an automatic anti-rebound mechanism for opening the door, which can solve the technical problems of automatic checkout machines having door rebound and easy hand pinching.
[0005] This utility model is implemented as follows:
[0006] This utility model provides a self-checkout machine with an automatic anti-rebound mechanism, including a front shell main body and a rear shell main body. The front shell main body and the rear shell main body are connected by a pivot. The front shell main body rotates around the pivot to open and close the self-checkout machine. An anti-rebound mechanism assembly is provided at the bottom of the side of the front shell main body and the rear shell main body that are in contact with each other. The anti-rebound mechanism assembly automatically limits the front shell main body after it is opened to prevent it from rebounding. One side of the anti-rebound mechanism assembly is fixed to the inner wall of the front shell main body, and the other side is fixed to the inner wall of the rear shell main body. Rotation allows the front shell main body to open and close from 0-90° around the rear shell main body.
[0007] Based on the above technical solution, the self-service checkout machine with an automatic anti-rebound mechanism for door opening according to this utility model can be further improved as follows:
[0008] The anti-rebound mechanism assembly includes a rear shell fixing block, a connecting piece, a first threaded screw, a front shell fixing guide plate, a limiting post, a spring, a limiting block, a second threaded screw, and a door rotation shaft. The rear shell fixing block is fixed to the inner wall of the main body of the front shell of the self-service checkout machine. One end of the connecting piece is fixed to the rear shell fixing block by the first threaded screw, and the other end is hinged to the front shell fixing guide plate to achieve force transmission and guidance. The first threaded screw is used to install the connecting piece onto the rear shell fixing block, allowing the connecting piece to have a vertical clearance for floating connection and avoiding jamming. The front shell fixing guide plate is installed on the inner side of the main body of the front shell of the self-service checkout machine near the door hinge and is connected to the connecting piece to guide the movement trajectory when the door is opened.
[0009] Furthermore, the limiting post is a cylindrical metal rod with a hemispherical or conical head that passes through the central hole of the limiting block.
[0010] Furthermore, the spring is sleeved on the limiting post and located between the head of the limiting post and the limiting block, and is used to provide thrust so that the limiting post remains in the limiting state.
[0011] Furthermore, the limiting post extends out under the action of the spring and engages with the limiting hole on the door rotation shaft to achieve mechanical locking.
[0012] Furthermore, the limiting block is fixed on the rear shell fixing block, and a guide hole is provided in the center. The limiting post passes through the guide hole to support the spring and provide sliding guidance to prevent displacement.
[0013] Furthermore, the second machine screw fixes the limiting block to the rear shell fixing block.
[0014] Furthermore, the door rotation axis is the rotation axis between the front shell main body and the rear shell main body of the self-service checkout machine.
[0015] Furthermore, a radial limiting hole is provided on the circumference of the door rotation shaft. The limiting hole has a depth of 3-5 mm and a diameter that is 0.1-0.2 mm larger than the limiting post. The hole is positioned corresponding to a 90° rotation of the front shell main body of the self-service cash register.
[0016] Furthermore, when the main body of the front shell of the self-service checkout machine is rotated to 90°, the limiting post aligns with the limiting hole and is inserted into the limiting hole under the action of the spring to achieve rotational locking and prevent rebound.
[0017] Compared with existing technologies, the advantages of the self-service checkout machine with an automatic anti-rebound mechanism for door opening provided by this utility model are:
[0018] The front and rear shells of the self-service checkout are connected by a hinge, which acts as a fulcrum, allowing the front shell to open and close around its axis. The front shell opens from 0 to 90 degrees, making it convenient for users to operate the checkout. The way the front shell rotates around the hinge allows the self-service checkout to open like a door. This design not only facilitates operation but also saves space.
[0019] To prevent the front cover from springing back after opening (i.e., the front cover closing again due to inertia), an anti-springback mechanism was designed. This mechanism ensures that the front cover automatically stops after opening, preventing accidental springback.
[0020] The anti-rebound mechanism comprises multiple parts that work in coordination to achieve limiting and anti-rebound functions: The rear shell fixing block is fixed to the inner wall of the front shell, providing fixed support for the anti-rebound mechanism. One end of the connecting piece is connected to the rear shell fixing block via a first machine screw, and the other end is hinged to the front shell fixing guide plate. The connecting piece transmits and guides force, ensuring smooth movement during the opening and closing of the front shell. The front shell fixing guide plate is installed on the inner side of the front shell near the door hinge, cooperating with the connecting piece to guide the movement trajectory of the front shell, ensuring its stability during opening and closing. The limiting post is a cylindrical metal rod with a hemispherical or conical top, passing through the central hole of the limiting block. Under the action of a spring, the limiting post extends and inserts into the limiting hole on the door rotation shaft, thus playing a mechanical locking role and preventing the front shell from rebounding. The function of the limiting post is to lock the front shell and prevent rebound by aligning with and inserting into the limiting hole when the self-service checkout machine's front shell rotates to 90°. The spring is located between the limiting post and the limiting block, providing thrust to keep the limiting post in its limited position. The limiting block is fixed to the rear shell fixing block, with a guide hole in its center to support the spring and guide the sliding of the limiting post, preventing the limiting post from shifting. The function of the limiting block is to stabilize the movement trajectory of the limiting post through the guide hole, ensuring that the limiting post can smoothly enter the limiting hole when the front shell is opened, thereby achieving locking.
[0021] The pivot between the front and rear covers is the door rotation axis. The door rotation axis has radial limiting holes, typically 3-5 mm deep and 0.1-0.2 mm larger in diameter than the limiting post, ensuring smooth insertion of the limiting post. The position of the limiting holes corresponds to the front cover's 90° rotation. When the front cover rotates to 90°, the limiting post automatically inserts into the limiting hole, achieving rotational locking and preventing rebound.
[0022] The installation method of the connecting piece and the rear shell fixing block ensures that the connecting piece can float vertically through the first threaded screw, thus avoiding jamming and ensuring smooth opening and closing. The anti-rebound mechanism, through the cooperation of springs and limit posts, automatically inserts into the limit hole for mechanical locking when the front shell rotates to 90°, ensuring stable opening of the front shell without rebound. All components, through precise fixing and guiding design, ensure that the self-service checkout machine does not loosen or shift during opening and closing, thereby guaranteeing the stability and durability of the equipment.
[0023] In summary, this device effectively solves the problem of rebound during the opening process of self-service checkout machines, ensuring the long-term stable operation of the equipment. Furthermore, its reasonable structural design improves the smoothness of opening and closing the door and the convenience of operation. Attached Figure Description
[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 Axonometric view of the open door state after the tabletop support is hidden;
[0026] Figure 2 A schematic diagram of the anti-rebound component when the door is closed;
[0027] Figure 3 A schematic diagram of the anti-rebound component when the door is opened at 45°.
[0028] Figure 4 A schematic diagram of the anti-rebound component when the door is opened 90°.
[0029] Figure 5 To prevent the springback component from being exploded into a single view;
[0030] Figure 6 These are the front and side views of the self-service checkout machine.
[0031] The attached diagram lists the components represented by each number as follows:
[0032] 1. Front shell main body of the self-service checkout machine; 2. Rear shell main body of the self-service checkout machine; 3. Anti-rebound mechanism assembly; 3-1. Rear shell fixing block; 3-2. Connecting piece; 3-3. First threaded screw; 3-4. Front shell fixing guide plate; 3-5. Limiting post; 3-6. Spring; 3-7. Limiting block; 3-8. Second threaded screw; 3-9. Door rotating shaft. Detailed Implementation
[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.
[0034] like Figure 1-6The illustration shows a first embodiment of a self-service checkout machine with an automatic anti-rebound mechanism for opening the door, provided by this utility model. In this embodiment, it includes a front shell main body 1 and a rear shell main body 2. The front shell main body 1 and the rear shell main body 2 are connected by a pivot. The front shell main body 1 rotates around the pivot to open and close the self-service checkout machine. An anti-rebound mechanism assembly 3 is provided at the bottom of the side where the front shell main body 1 and the rear shell main body 2 are in contact with each other. The anti-rebound mechanism assembly 3 automatically limits the opening of the front shell main body 1 after it is opened, preventing it from rebounding. One side of the anti-rebound mechanism assembly 3 is fixed to the inner wall of the front shell main body 1, and the other side is fixed to the inner wall of the rear shell main body 2. Rotation allows the front shell main body 1 to open and close around the rear shell main body 2 at a range of 0-90°.
[0035] In the above technical solution, the anti-rebound mechanism assembly 3 includes a rear shell fixing block 3-1, a connecting piece 3-2, a first threaded screw 3-3, a front shell fixing guide plate 3-4, a limiting post 3-5, a spring 3-6, a limiting block 3-7, a second threaded screw 3-8, and a door rotation shaft 3-9. The rear shell fixing block 3-1 is fixed to the inner wall of the front shell main body 1 of the self-service checkout machine. One end of the connecting piece 3-2 is fixed to the rear shell fixing block 3-1 by the first threaded screw 3-3, and the other end is hinged to the front shell fixing guide plate 3-4 to realize force transmission and guidance. The first threaded screw 3-3 is used to install the connecting piece 3-2 onto the rear shell fixing block 3-1, allowing the connecting piece 3-2 to have a vertical movement gap to achieve a floating connection and avoid jamming. The front shell fixing guide plate 3-4 is installed on the inner side of the front shell main body 1 of the self-service checkout machine near the door hinge and is connected to the connecting piece 3-2 to guide the movement trajectory when the door is opened.
[0036] Furthermore, in the above technical solution, the limiting post 3-5 is a cylindrical metal rod with a hemispherical or conical head that passes through the central hole of the limiting block 3-7.
[0037] Furthermore, in the above technical solution, the spring 3-6 is sleeved on the limiting post 3-5, located between the head of the limiting post 3-5 and the limiting block 3-7, and is used to provide thrust so that the limiting post 3-5 remains in the limiting state.
[0038] Furthermore, in the above technical solution, the limiting post 3-5 extends out of the limiting hole on the main door rotating shaft 3-9 under the action of the spring 3-6, thereby achieving mechanical locking.
[0039] Furthermore, in the above technical solution, the limiting block 3-7 is fixed on the rear shell fixing block 3-1, and a guide hole is provided in the center. The limiting post 3-5 passes through the guide hole to support the spring 3-6 and provide sliding guidance to prevent displacement.
[0040] Furthermore, in the above technical solution, the second machine screw 3-8 fixes the limiting block 3-7 onto the rear shell fixing block 3-1.
[0041] Furthermore, in the above technical solution, the door rotation shaft 3-9 is the rotation shaft between the front shell main body 1 and the rear shell main body 2 of the self-service cash register.
[0042] Furthermore, in the above technical solution, a radial limiting hole is provided on the circumference of the door rotation shaft 3-9. The limiting hole has a depth of 3-5mm and a diameter that is 0.1-0.2mm larger than that of the limiting post 3-5. The position corresponds to the front shell main body 1 of the self-service cash register rotating 90°.
[0043] Furthermore, in the above technical solution, when the main body 1 of the front shell of the self-service cash register is rotated to 90°, the limiting post 3-5 is aligned with the limiting hole and inserted into the limiting hole under the action of the spring 3-6 to achieve rotation locking and prevent rebound.
[0044] Specifically, the principle of this utility model is as follows: when in use, the user or operator pulls the front shell of the self-service checkout machine, and the front shell rotates around the pivot to open the door of the self-service checkout machine.
[0045] Thanks to its anti-rebound mechanism, when the front cover rotates to approximately 90°, the stop post automatically inserts into the stop hole, locking the door in place. When the front cover has rotated 90°, the stop post (driven by a spring) automatically aligns with and inserts into the stop hole on the door's rotation axis via its hemispherical or conical head, ensuring the front cover is open and will not spring back. After insertion, the stop post, through a mechanical locking mechanism, keeps the front cover in the open position, preventing rebound. When it's time to close the cash register, the user manually pushes the front cover, overcoming the spring's thrust, causing the stop post to disengage from the stop hole, allowing the front cover to rotate in the opposite direction along the axis and close the self-service cash register door.
[0046] When the door is closed, the limit post will be pushed by the spring again, returning to the anti-rebound position, ready for the next opening operation.
[0047] The working principle of the anti-rebound mechanism: One of the core components of the anti-rebound mechanism is the limiting post, which, combined with a spring, keeps the limiting post locked when the door is opened by the spring's thrust. The spring pushes the limiting post into the limiting hole on the door rotation shaft between the front and rear shells, thus achieving mechanical locking and preventing the door from rebounding due to inertia. The top of the limiting post is designed to be hemispherical or conical to better match the limiting hole and ensure that it will not jam when inserted. One end of the connecting piece is fixed to the rear shell fixing block with a machine screw, and the other end is hinged to the front shell fixing guide plate. The function of the connecting piece is to transmit force between the front and rear shells and provide motion guidance. The guide plate is installed on the inside of the front shell, close to the door hinge position. It cooperates with the connecting piece to ensure that the front shell moves along a predetermined trajectory when opening and closing, avoiding deviation or jamming. The limiting block is fixed to the rear shell fixing block and is provided with a guide hole. The limiting post slides through the guide hole and remains on the correct movement trajectory. The guide hole ensures that the limiting post stably enters the limiting hole under the thrust of the spring, achieving reliable locking. When the front cover rotates to 90°, the limiting post aligns with the limiting hole and inserts into it, completing the mechanical locking and ensuring that the front cover cannot spring back when open. This mechanism effectively prevents the front cover of the self-service checkout machine from accidentally closing due to inertia or external force. Thanks to the design of the connecting piece and the limiting post, the front cover can open and close smoothly, while the limiting post can freely extend, retract, and lock. This improves the flexibility of opening the door while ensuring safety, avoiding springback and jamming.
Claims
1. A self-service checkout machine with an automatic anti-rebound mechanism for opening the door, comprising a front shell main body (1) and a rear shell main body (2), wherein the front shell main body (1) and the rear shell main body (2) are connected by a pivot, and the front shell main body (1) rotates around the pivot to realize the opening and closing of the self-service checkout machine; characterized in that, An anti-rebound mechanism assembly (3) is provided at the bottom of the side where the front shell main body (1) and the rear shell main body (2) of the self-service cash register are in contact with each other. The anti-rebound mechanism assembly (3) is used to automatically limit the front shell main body (1) of the self-service cash register after it is opened, so as to prevent the front shell main body (1) of the self-service cash register from rebounding. One side of the anti-rebound mechanism assembly (3) is fixed on the inner wall of the front shell main body (1) of the self-service cash register, and the other side is fixed on the inner wall of the rear shell main body (2) of the self-service cash register. By rotating, the front shell main body (1) of the self-service cash register can open and close around the rear shell main body (2) of the self-service cash register from 0 to 90 degrees.
2. A self-service checkout machine with an automatic anti-rebound mechanism for door opening as described in claim 1, characterized in that, The anti-rebound mechanism assembly (3) includes a rear shell fixing block (3-1), a connecting piece (3-2), a first threaded screw (3-3), a front shell fixing guide plate (3-4), a limiting post (3-5), a spring (3-6), a limiting block (3-7), a second threaded screw (3-8), and a door rotating shaft (3-9). The rear shell fixing block (3-1) is fixed to the inner wall of the main body of the front shell of the self-service cash register (1). One end of the connecting piece (3-2) is connected to the rear shell fixing block (3-1) via the first threaded screw (3-3). The first end is fixed, and the other end is hinged to the front shell fixing guide plate (3-4) to realize the transmission and guidance of force; the first machine screw (3-3) is used to install the connecting piece (3-2) onto the rear shell fixing block (3-1), allowing the connecting piece (3-2) to have a vertical clearance to realize a floating connection and avoid jamming; the front shell fixing guide plate (3-4) is installed on the inner side of the main body part (1) of the self-service cash register near the door hinge, and is connected with the connecting piece (3-2) to guide the movement trajectory when the door is opened.
3. A self-service checkout machine with an automatic anti-rebound mechanism for door opening as described in claim 2, characterized in that, The limiting post (3-5) is a cylindrical metal rod with a hemispherical or conical head that passes through the central hole of the limiting block (3-7).
4. A self-service checkout machine with an automatic anti-rebound mechanism for door opening as described in claim 3, characterized in that, The spring (3-6) is sleeved on the limiting post (3-5) and located between the head of the limiting post (3-5) and the limiting block (3-7), and is used to provide thrust so that the limiting post (3-5) remains in the limiting state.
5. A self-service checkout machine with an automatic anti-rebound mechanism for door opening as described in claim 4, characterized in that, The limiting post (3-5) extends out under the action of the spring (3-6) and locks into the limiting hole on the door rotation shaft (3-9) to achieve mechanical locking.
6. A self-service checkout machine with an automatic anti-rebound mechanism for door opening as described in claim 5, characterized in that, The limiting block (3-7) is fixed on the rear shell fixing block (3-1), and a guide hole is provided in the center. The limiting post (3-5) passes through the guide hole to support the spring (3-6) and provide sliding guidance to prevent displacement.
7. A self-service checkout machine with an automatic anti-rebound mechanism for door opening as described in claim 6, characterized in that, The second machine screw (3-8) fixes the limiting block (3-7) onto the rear shell fixing block (3-1).
8. A self-service checkout machine with an automatic anti-rebound mechanism for door opening as described in claim 7, characterized in that, The door rotation axis (3-9) is the rotation axis between the front shell main body (1) and the rear shell main body (2) of the self-service cash register.
9. A self-service checkout machine with an automatic anti-rebound mechanism for door opening as described in claim 8, characterized in that, The door rotation shaft (3-9) is provided with a radial limiting hole on its circumference. The limiting hole has a depth of 3-5 mm and a diameter that is 0.1-0.2 mm larger than that of the limiting post (3-5). The hole is positioned to correspond to the front shell main body (1) of the self-service cash register rotated 90°.
10. A self-service checkout machine with an automatic anti-rebound mechanism for door opening as described in claim 9, characterized in that, When the main body (1) of the front shell of the self-service cash register is rotated to 90°, the limiting post (3-5) is aligned with the limiting hole and inserted into the limiting hole under the action of the spring (3-6) to achieve rotation locking and prevent rebound.