Community express intelligent peak-shifting distribution scheduling method

Abstract

A smart off-peak delivery scheduling method for community express delivery, relating to the field of logistics delivery scheduling technology, includes collecting community user information, establishing a database, dividing daytime and nighttime off-peak delivery periods, constructing an express order collection and scheduling preprocessing module, employing couriers and delivery devices for express delivery, linking with an elevator reservation system to realize delivery elevator reservations, generating dynamic delivery routes and scheduling instructions, and data optimization iterations. This invention is highly practical, achieving precise off-peak delivery by collecting and analyzing resident activity data, alleviating peak delivery congestion; improving user convenience by accurately matching delivery periods with resident activity characteristics; reducing waiting time for delivery personnel by linking with the community elevator reservation system; and dynamically adjusting delivery plans by real-time monitoring of the delivery process.

Description

Technical Field

[0001] This invention relates to the field of logistics and distribution scheduling technology, and in particular to a method for intelligent off-peak delivery scheduling of community express delivery. Background Technology

[0002] With the rapid development of e-commerce, the volume of express delivery services has exploded. As the final link in express delivery, the community's delivery efficiency and user experience directly affect the quality of logistics services.

[0003] Currently, there are two main problems in the community express delivery process: First, there is congestion during peak delivery times. The existing delivery model mostly adopts concentrated delivery periods, which causes delivery personnel to make deliveries in large numbers during weekday lunch and evening hours when users are concentrated at home. This not only causes congestion of delivery vehicles in the community and interference between delivery personnel, but also significantly increases the delivery time for delivery personnel. Secondly, the inconvenience of picking up packages for users coexists with low delivery efficiency. Working people cannot receive their packages in time because they are out working during the day and often need to go to the express locker or station to pick them up, which increases the time cost for users. Although the elderly are mostly at home during the day, delivery people often have to wait for the elevator when making deliveries, especially in high-rise buildings. The long elevator waiting time further reduces the delivery efficiency.

[0004] In existing technologies, some express delivery scheduling solutions only focus on optimizing delivery routes and fail to fully consider the personalized work and rest characteristics of community residents, thus failing to achieve precise off-peak delivery. Furthermore, existing solutions do not integrate with the community elevator system, leaving the time cost of delivery personnel waiting for elevators unresolved, resulting in a poor last-mile delivery experience. Therefore, there is an urgent need for an intelligent scheduling method that can combine resident work and rest data to achieve precise off-peak scheduling and integrate with the elevator reservation system to improve delivery efficiency, in order to solve the aforementioned technical problems. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, this invention discloses a smart off-peak delivery scheduling method for community express delivery. This invention collects community user information, establishes a database, divides daytime and nighttime off-peak delivery periods, constructs an express delivery order collection and scheduling preprocessing module, and uses couriers in conjunction with delivery devices to deliver express packages, links with an elevator reservation system to realize delivery elevator reservations, generates dynamic delivery routes and scheduling instructions, and optimizes data iterations to achieve personalized delivery matching, reduce delivery waiting time, alleviate community delivery peak congestion, and improve last-mile delivery efficiency and user experience.

[0006] To achieve the aforementioned objective, the present invention employs the following technical solution: A method for intelligent off-peak delivery scheduling in community express delivery includes: S1: Collect community user information and establish a database; S2: Divide delivery times into daytime and nighttime off-peak periods; S3: Construct a preprocessing module for express delivery order collection and scheduling; S4: The elevator reservation system enables delivery elevator reservations; S5: Generates dynamic delivery routes and scheduling instructions, enabling couriers to cooperate with the delivery device to deliver packages; S6: Data optimization iteration; The delivery device includes a transport robot, an electronic scale, a large box, a small box, and an insulated box. The transport robot is equipped with an electronic scale that is electrically connected to its upper end. Above the electronic scale, the large box, the small box, and the insulated box are arranged in sequence from bottom to top. The electronic scale is slidably connected to the large box, the large box is slidably connected to the small box, and the small box is slidably connected to the insulated box.

[0007] The transport robot includes a robot body, wheels, cameras, and a support plate. The robot body has wheels distributed at the four corners of its lower end. The wheels are Mecanum wheels. The motor inside the robot body drives the wheels to rotate. Cameras are distributed on the sides of the robot body. The robot body has a longitudinally arranged support plate at its rear end. The outer surface of the support plate has hooks.

[0008] The inner surface of the support plate is provided with a longitudinally arranged sliding groove, and a conductive sliding rail electrically connected to the robot body is provided in the sliding groove.

[0009] The large container consists of a first container body and a first container door. The first container body has handles on both sides. The first container body has a hinged first container door at the opening on the side away from the support plate. The first container door has a first input panel that controls the door lock switch. The first container body has a locking block at the top and a locking groove at the bottom. The locking groove cooperates with the locking block above the electronic scale. The first container body has a first contact point at the end near the support plate. The first contact point is located in a sliding groove and is electrically connected to the conductive slide rail in the sliding groove.

[0010] The first box has ultraviolet lamps distributed on its inner wall, a conveyor on its bottom surface, a bearing roller at the output end of the conveyor, and both the conveyor and the ultraviolet lamps are electrically connected to the first contact. The upper end of the opening of the first box has a longitudinally arranged electric push rod, the lower end of the electric push rod has a transversely arranged pressure roller, and two longitudinally arranged brush plates are symmetrically arranged on the inner walls on both sides of the opening of the first box.

[0011] The small parts box consists of a second box body and a second box door. The second box body has handles on both sides. The second box body has a hinged second box door at the opening on the side away from the support plate. The second box door has a second input panel that controls the door lock switch. The upper end of the second box body has a locking block, and the lower end of the second box body has a second locking groove that cooperates with the locking block above the large parts box. The end of the second box body near the support plate has a second contact point that is located in a sliding groove and is electrically connected to a conductive slide rail in the sliding groove.

[0012] The inner wall of the second box is equipped with ultraviolet lamps, the bottom surface of the second box is equipped with a conveyor, the output end of the conveyor in the second box is equipped with a bearing roller, the conveyor and ultraviolet lamps in the second box are electrically connected to the second contact, the upper end of the opening of the second box is equipped with a longitudinally arranged electric push rod, the lower end of the electric push rod of the second box is equipped with a transversely arranged pressure roller, and two longitudinally arranged brush plates are symmetrically arranged on the inner walls on both sides of the opening of the second box.

[0013] Both the pressure roller and the bearing roller are covered with a soft adhesive layer on their sides.

[0014] The insulated box consists of a third box body and a third box door. The third box body has a hinged third box door at the opening on the side away from the support plate. The third box door has a third input panel, which controls the door lock switch of the third box door. The lower end of the third box body has a third slot, which cooperates with the block above the small parts box. The end of the third box body near the support plate has a third contact point, which is located in a slide groove and is electrically connected to the conductive slide rail in the slide groove.

[0015] The community express delivery intelligent off-peak scheduling method described in this invention is highly practical and very convenient to use. By collecting and analyzing residents' daily routine data, it achieves precise off-peak delivery and alleviates congestion during peak delivery periods; by accurately matching delivery times with residents' daily routine characteristics, it improves the convenience of package pickup for users; by linking with the community elevator reservation system, delivery personnel can reserve elevator resources in advance, reducing their waiting time; and by monitoring the delivery process in real time, it dynamically adjusts the delivery plan. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram showing the positional relationship between the transport robot and the electronic scale of the present invention; Figure 3 This is a side view of the large container of the present invention; Figure 4 This is a cross-sectional view of the large component box of the present invention; Figure 5 This is a side view of the small parts box of the present invention; Figure 6This is a cross-sectional view of the small parts box of the present invention; Figure 7 This is a view of the insulated box of the present invention; In the diagram: 1. Transport robot; 101. Robot body; 102. Wheel; 103. Camera; 104. Carrier plate; 105. Slide; 106. Hook; 2. Electronic scale; 3. Large box; 301. First box body; 302. First box door; 303. First input panel; 304. First contact point; 305. First slot; 4. Small box; 401. Second box body; 402. Second box door; 403. Second input panel; 404. Second contact point; 405. Second slot; 5. Insulated box; 501. Third box body; 502. Third box door; 503. Third input panel; 504. Third contact point; 505. Third slot; 6. Card block; 7. Handle; 8. Ultraviolet lamp; 9. Electric push rod; 10. Pressure roller; 11. Conveyor; 12. Carrier roller; 13. Brush plate. Detailed Implementation

[0017] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0018] Combined with appendix Figures 1-7 A method for intelligent off-peak delivery scheduling in community express delivery includes: S1: Collect community user information, establish a database, collect customer daily routine information through smart terminals, and establish a personalized user daily routine database; S2: Divide daytime and nighttime off-peak delivery periods. Based on specific customer data in the user's personalized work and rest database, divide daytime delivery time periods and nighttime delivery time periods. The elderly are matched to daytime delivery time periods, and the working population is matched to nighttime delivery time periods. S3: Construct a preprocessing module for collecting and scheduling express delivery orders, receive express delivery orders from express companies in the community, associate the orders with personalized delivery time slot tags in the resident database, and form daytime delivery order sets and evening delivery order sets; S4: The elevator reservation system enables delivery personnel to reserve elevators. It establishes an elevator reservation module that interfaces with the community elevator control system and uses the TCP / IP protocol for communication to allocate the best elevator resources to delivery personnel. S5: Generate dynamic delivery routes and scheduling instructions. The scheduling instructions are generated through route optimization algorithms to prioritize delivery during the matched off-peak delivery periods. Couriers cooperate with the delivery device to deliver the packages. S6: Data optimization and iteration. Through real-time monitoring and feedback of the delivery process, combined with a dynamic adjustment mechanism, data optimization and iteration are completed.

[0019] The delivery device includes a transport robot 1, an electronic scale 2, a large package box 3, a small package box 4, and an insulated box 5. The transport robot 1 is electrically connected to the electronic scale 2 at its upper end. Above the electronic scale 2, the large package box 3, the small package box 4, and the insulated box 5 are arranged sequentially from bottom to top. The electronic scale 2 is slidably connected to the large package box 3, the large package box 3 is slidably connected to the small package box 4, and the small package box 4 is slidably connected to the insulated box 5. The electronic scale 2 is connected to the courier's personal terminal. The electronic scale 2 measures the weight of the package above and accurately determines the transport weight of the transport robot 1. If the weight of the package exceeds the preset weight, a signal is sent to the courier's terminal, thereby reducing the probability of damage to the transport robot 1 and improving the service life of the equipment.

[0020] The transport robot 1 includes a robot body 101, wheels 102, cameras 103, and a support plate 104. Wheels 102 are distributed at the four corners of the lower end of the robot body 101. The wheels 102 are Mecanum wheels to facilitate the movement of the transport robot 1. The motor inside the robot body 101 drives the wheels 102 to rotate. Cameras 103 are distributed on the side of the robot body 101 to collect environmental data during transportation, which can be monitored and adjusted by the backend. The rear end of the robot body 101 is provided with a longitudinally arranged support plate 104. The outer surface of the support plate 104 is provided with hooks 106. During transportation, the transport robot 1 is fixed to the transport vehicle by the hooks 106 for easy carrying.

[0021] The inner surface of the support plate 104 is provided with a longitudinally arranged slide groove 105. The slide groove 105 is provided with a conductive slide rail that is electrically connected to the robot body 101. The conductive slide rail in the slide groove 105 is electrically connected to the robot body 101, and the robot body 101 supplies power to the device above through the conductive slide rail in the slide groove 105.

[0022] The large container 3 consists of a first container body 301 and a first container door 302. The first container body 301 has handles 7 on both sides. The first container body 301 has a hinged first container door 302 at the opening on the side away from the support plate 104. The first container door 302 has a first input panel 303. The user inputs the unique verification code received by the terminal through the first input panel 303. The first input panel 303 controls the door lock switch of the first container door 302. After the verification code is correctly entered, the first container door 302 opens. The upper end of the first container body 301 has a locking block 6. The lower end of the first container body 301 has a first locking groove 305. The first locking groove 305 is set to cooperate with the locking block 6 above the electronic scale 2. The end of the first container body 301 near the support plate 104 has a first contact point 304. The first contact point 304 is set in the slide groove 105 and is electrically connected to the conductive slide rail in the slide groove 105.

[0023] The inner wall of the first box 301 is equipped with ultraviolet lamps 8. When the ultraviolet lamps 8 are turned on, they disinfect the surface of the goods inside. A conveyor 11 is provided on the bottom surface of the first box 301. After the first box door 302 is opened, the conveyor 11 inside the first box 301 starts to transport the goods to the outlet of the first box 301. A carrying roller 12 is provided at the output end of the conveyor 11 inside the first box 301. The conveyor 11 and the ultraviolet lamps 8 inside the first box 301 are electrically connected to the first contact 304. A longitudinally arranged electric push rod 9 is provided at the upper end of the opening of the first box 301. A transversely arranged pressure roller 10 is provided at the lower end of the electric push rod 9 of the first box 301. Two longitudinally arranged brush plates 13 are symmetrically arranged on the inner walls on both sides of the opening of the first box 301. After the first box door 302 is opened, the electric push rod 9 extends so that the pressure roller 10 presses on the packaging of the goods below. As the goods move, the pressure roller 10, the carrying roller 12 and the brush plate 13 remove the dust on the outside of the packaging.

[0024] The small item box 4 consists of a second box body 401 and a second box door 402. The second box body 401 has handles 7 on both sides. The second box body 401 has a hinged second box door 402 at the opening on the side away from the support plate 104. The second box door 402 has a second input panel 403. The user inputs the unique verification code received by the terminal through the second input panel 403. The second input panel 403 controls the door lock switch of the second box door 402. After the verification code is correctly entered, the second box door 402 opens. The upper end of the second box body 401 has a locking block 6, and the lower end of the second box body 401 has a second locking groove 405. The second locking groove 405 is set to cooperate with the locking block 6 above the large item box 3. The end of the second box body 401 near the support plate 104 has a second contact point 404. The second contact point 404 is set in the slide groove 105 and is electrically connected to the conductive slide rail in the slide groove 105.

[0025] Ultraviolet lamps 8 are distributed on the inner wall of the second box 401. When the ultraviolet lamps 8 are turned on, they disinfect the surface of the goods inside. A conveyor 11 is provided on the bottom surface of the second box 401. After the second box door 402 is opened, the conveyor 11 inside the second box 401 starts to transport the goods to the outlet of the second box 401. A carrying roller 12 is provided at the output end of the conveyor 11 inside the second box 401. Both the conveyor 11 and the ultraviolet lamps 8 inside the second box 401 are connected to the second contact point 404. Electrically connected, the upper end of the opening of the second box 401 is provided with a longitudinally arranged electric push rod 9, the lower end of the electric push rod 9 of the second box 401 is provided with a transversely arranged pressure roller 10, and two longitudinally arranged brush plates 13 are symmetrically arranged on the inner walls on both sides of the opening of the second box 401. After the second box door 402 is opened, the electric push rod 9 inside extends so that the pressure roller 10 presses on the packaging of the goods below. As the goods move, the pressure roller 10, the bearing roller 12 and the brush plate 13 inside remove the dust from the outside of the packaging.

[0026] Both the pressure roller 10 and the bearing roller 12 are covered with a soft adhesive layer on their sides. The adhesive layer adheres to the dust on the surface of the goods, cleans the surface of the goods, and makes it convenient for users to take them out.

[0027] The insulated box 5 consists of a third box body 501 and a third box door 502. The inner wall of the third box body 501 is provided with an insulation layer. The third box door 502 is hinged at the opening on the side away from the support plate 104. The third box door 502 is provided with a third input panel 503. The user inputs the unique verification code received by the terminal through the third input panel 503. The third input panel 503 controls the door lock switch of the third box door 502. After the verification code is correctly entered, the third box door 502 opens. The lower end of the third box body 501 is provided with a third card slot 505. The third card slot 505 is set to cooperate with the card block 6 above the small parts box 4. The end of the third box body 501 near the support plate 104 is provided with a third contact 504. The third contact 504 is set in the slide groove 105 and is electrically connected to the conductive slide rail in the slide groove 105.

[0028] The community express delivery intelligent off-peak delivery scheduling method described in this embodiment first collects community user information to establish a database. This is achieved through three methods: collecting resident registration information, collecting smart device behavior data, and statistically analyzing historical delivery interaction data to gather resident lifestyle characteristic data. This lifestyle characteristic data includes resident identity type, daily home time, preferred pickup time, and residential floor information to establish a personalized user lifestyle database. Then, daytime and nighttime off-peak delivery periods are defined. These periods are divided based on specific customer data in the personalized user lifestyle database, with elderly individuals assigned to daytime delivery periods and working individuals to nighttime delivery periods. A pre-processing module for express delivery order collection and scheduling is constructed to receive community express delivery orders from express companies, associate these orders with personalized delivery time tags in the resident database, forming daytime and nighttime delivery order sets. This is then linked to an elevator reservation system to enable delivery elevator reservations. An elevator reservation module is built to interface with the community elevator control system. It uses the TCP / IP protocol for communication to allocate the best elevator resources to delivery personnel. Before setting off for delivery, the delivery personnel submit an elevator reservation request to the elevator reservation module through the dispatch system. The request information includes the delivery building, unit, target floor, and estimated arrival time at the elevator. The elevator reservation module sends the reservation request to the elevator control system of the corresponding unit. The elevator control system allocates the best elevator resources to the delivery personnel based on the current elevator operating status and sends back a reservation success message and the estimated elevator waiting time to the dispatch system.If the expected waiting time exceeds a preset threshold, the dispatch system adjusts the delivery order of the order, prioritizing orders with successful elevator reservations and shorter waiting times. The elevator reservation module prioritizes delivery personnel reservations over temporary use by ordinary residents, and queues delivery reservation requests for the same elevator unit within the same time period. Dynamic delivery routes and dispatch instructions are then generated, using route optimization algorithms to ensure delivery is completed within the matched off-peak delivery time slots. Before delivery, packages are placed in corresponding boxes according to size and category and locked. A unique verification code is sent to the user's terminal based on the package information. Upon arrival at the customer's community, the transport robot 1 follows the courier to the door. The user opens the corresponding large box 3, small box 4, or insulated box 5 using the received unique verification code, and then the package is delivered. The package is moved out via conveyor 11. During the removal process, the conveyor 11 inside the large or small package 3 opens to transport the goods to the exit. As the goods move, the pressure roller 10, carrying roller 12, and brush plate 13 remove dust from the outside of the packaging. After delivery, the package returns to its original location. During the delivery process, the dispatch system receives real-time delivery progress information (completed / in delivery / pending delivery) and elevator usage feedback from the delivery personnel's terminal. If emergencies occur, such as residents being temporarily unable to pick up their packages or elevator malfunctions, the dispatch system re-matches delivery time slots or adjusts delivery routes based on real-time data and re-links the elevator reservation system to update elevator reservation information. After delivery is completed, the system collects resident pickup experience evaluations and delivery personnel delivery efficiency data, feeding them back to the resident work and rest database and the dispatch algorithm optimization module to achieve iterative optimization of the dispatch strategy.

[0029] The parts of this invention not described in detail are prior art. Although the invention has been specifically shown and introduced in conjunction with preferred embodiments, there are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of the invention. However, those skilled in the art should understand that various changes in form and detail can be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, and all such changes are within the scope of protection of the invention.

Claims

1. A community express intelligent off-peak distribution scheduling method, characterized in that: include: S1: Collect community user information and establish a database; S2: Divide delivery times into daytime and nighttime off-peak periods; S3: Construct a preprocessing module for express delivery order collection and scheduling; S4: The elevator reservation system enables delivery elevator reservations; S5: Generates dynamic delivery routes and scheduling instructions, enabling couriers to cooperate with the delivery device to deliver packages; S6: Data optimization iteration.

2. The community express delivery intelligent off-peak scheduling method according to claim 1, characterized in that: The delivery device described in S5 includes a transport robot (1), an electronic scale (2), a large box (3), a small box (4), and an insulated box (5). The transport robot (1) is equipped with an electronic scale (2) that is electrically connected to its upper end. Above the electronic scale (2), the large box (3), the small box (4), and the insulated box (5) are arranged in sequence from bottom to top. The electronic scale (2) is slidably connected to the large box (3), the large box (3) is slidably connected to the small box (4), and the small box (4) is slidably connected to the insulated box (5).

3. The community express delivery intelligent off-peak scheduling method according to claim 2, characterized in that: The transport robot (1) includes a robot body (101), wheels (102), cameras (103) and a support plate (104). The robot body (101) has wheels (102) distributed at the four corners of its lower end. The wheels (102) are Mecanum wheels. The motor inside the robot body (101) drives the wheels (102) to rotate. Cameras (103) are distributed on the side of the robot body (101). The robot body (101) has a longitudinally arranged support plate (104) at its tail end. The support plate (104) has a hook (106) on its outer surface.

4. The community express delivery intelligent off-peak scheduling method according to claim 3, characterized in that: The inner surface of the support plate (104) is provided with a longitudinally arranged slide groove (105), and a conductive slide rail electrically connected to the robot body (101) is provided in the slide groove (105).

5. The community express delivery intelligent off-peak scheduling method according to claim 2, characterized in that: The large box (3) is composed of a first box body (301) and a first box door (302). The first box body (301) has handles (7) on both sides. The first box body (301) has a hinged first box door (302) at the opening on the side away from the support plate (104). The first box door (302) has a first input panel (303) on it. The first input panel (303) controls the door lock switch of the first box door (302). The upper end of the first box body (301) has a locking block (6). The lower end of the first box body (301) has a first locking groove (305). The first locking groove (305) is set to cooperate with the locking block (6) above the electronic scale (2). The first box body (301) has a first contact point (304) at the end near the support plate (104). The first contact point (304) is set in the slide groove (105). The first contact point (304) is electrically connected to the conductive slide rail in the slide groove (105).

6. The community express delivery intelligent off-peak scheduling method according to claim 5, characterized in that: The inner wall of the first box (301) is provided with ultraviolet lamps (8), the bottom surface of the first box (301) is provided with a conveyor (11), the output end of the conveyor (11) in the first box (301) is provided with a bearing roller (12), the conveyor (11) and the ultraviolet lamps (8) in the first box (301) are electrically connected to the first contact (304), the upper end of the opening of the first box (301) is provided with a longitudinally arranged electric push rod (9), the lower end of the electric push rod (9) of the first box (301) is provided with a transversely arranged pressure roller (10), and two longitudinally arranged brush plates (13) are symmetrically arranged on the inner walls on both sides of the opening of the first box (301).

7. The community express delivery intelligent off-peak scheduling method according to claim 2, characterized in that: The small parts box (4) is composed of a second box body (401) and a second box door (402). The second box body (401) has handles (7) on both sides. The second box body (401) has a hinged second box door (402) at the opening on the side away from the support plate (104). The second box door (402) has a second input panel (403) on it. The second input panel (403) controls the door lock switch of the second box door (402). The upper end of the second box body (401) has a locking block (6). The lower end of the second box body (401) has a second locking groove (405). The second locking groove (405) is configured to cooperate with the locking block (6) above the large parts box (3). The second box body (401) has a second contact point (404) at the end near the support plate (104). The second contact point (404) is located in the slide groove (105). The second contact point (404) is electrically connected to the conductive slide rail in the slide groove (105).

8. The community express delivery intelligent off-peak scheduling method according to claim 7, characterized in that: The inner wall of the second box (401) is provided with ultraviolet lamps (8), the bottom surface of the second box (401) is provided with a conveyor (11), the output end of the conveyor (11) in the second box (401) is provided with a bearing roller (12), the conveyor (11) and the ultraviolet lamps (8) in the second box (401) are electrically connected to the second contact (404), the upper end of the opening of the second box (401) is provided with a longitudinally arranged electric push rod (9), the lower end of the electric push rod (9) of the second box (401) is provided with a transversely arranged pressure roller (10), and two longitudinally arranged brush plates (13) are symmetrically arranged on the inner walls on both sides of the opening of the second box (401).

9. The community express delivery intelligent off-peak scheduling method according to claim 8, characterized in that: Both the pressure roller (10) and the bearing roller (12) are covered with a soft adhesive layer on their sides.

10. The community express delivery intelligent off-peak scheduling method according to claim 2, characterized in that: The insulated box (5) is composed of a third box body (501) and a third box door (502). The third box body (501) has a hinged third box door (502) at the opening on the side away from the support plate (104). The third box door (502) is provided with a third input panel (503). The third input panel (503) controls the door lock switch of the third box door (502). The lower end of the third box body (501) is provided with a third slot (505). The third slot (505) is set to cooperate with the card block (6) above the small parts box (4). The third box body (501) is provided with a third contact (504) at the end near the support plate (104). The third contact (504) is set in the slide groove (105). The third contact (504) is electrically connected to the conductive slide rail in the slide groove (105).

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