Trolley caster with self-monitoring function

Abstract

The utility model discloses a trolley caster with self -monitoring function relates to trolley caster technical field, this caster includes wheel core, two groups of wheel piece and support, and wheel core, two groups of wheel piece and support are connected through pin shaft and nut combination, and the peripheral surface of wheel core is provided with the installation gap, and the brake block detachably installs in the installation gap, and still be provided with the early warning device for monitoring the wear condition of brake block on the wheel core, and the surface of wheel core is provided with the assembly groove of shape adaptation with early warning device, and early warning device detachably installs in assembly groove, and early warning device is composed of sealed box body and processing unit in sealed box body, the utility model discloses the setting of early warning device can track brake block state in real time, when wear approaches limit, and early warning device initiatively prompts, and lets the user maintain in advance, avoids the danger caused by brake failure, and the braking reliability of trolley is improved significantly and the use safety of trolley, and the pain point of traditional trolley " brake hidden danger is difficult to judge " is solved.

Description

Technical Field

[0001] This utility model relates to the field of handcart caster technology, specifically to a handcart caster with self-monitoring function. Background Technology

[0002] In public places such as supermarkets and shopping malls, shopping carts are widely used as convenient carrying tools, and the performance of their casters directly affects the safety and service life of the shopping carts.

[0003] The brake pads on handcart casters achieve braking through friction with the ground. As the number of uses increases, they will gradually wear down. Traditional casters lack a monitoring mechanism for the wear of the brake pads. When the brake pads wear down to their limit, it is difficult for users to predict in advance, which may lead to brake failure. Especially in scenarios such as slopes and elevators, brake failure can easily cause the handcart to go out of control, resulting in personal injury or property damage. Utility Model Content

[0004] To solve the above-mentioned technical problems, a handcart caster with self-monitoring function is provided, which solves the problems existing in the background technology.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a handcart caster with self-monitoring function, the caster includes a wheel core, two sets of wheel pieces and a bracket, the wheel core, the two sets of wheel pieces and the bracket are connected by a pin and a nut, the circumferential surface of the wheel core is provided with an installation notch, a brake block is detachably installed in the installation notch, the wheel core is also provided with an early warning device for monitoring the wear of the brake block, the surface of the wheel core is provided with a mounting groove adapted to the shape of the early warning device, and the early warning device is detachably installed in the mounting groove;

[0006] The early warning device consists of a sealed box and a processing unit located inside the sealed box.

[0007] Preferably, the processing unit includes a circuit board, a battery, and an alarm light. The battery and the alarm light are both mounted on the circuit board, and a wire connects the circuit board to the brake block.

[0008] Preferably, the sealing box consists of an upper cover and a lower cover connected by screws, and a sealing ring is pressed between the upper cover and the lower cover.

[0009] Preferably, the outer periphery of the wheel core has a circular hole that communicates with the assembly groove, a cylindrical head is placed inside the circular hole, the cylindrical head is fixedly connected to the upper cover, and the alarm light is located inside the cylindrical head.

[0010] Preferably, both sides of the top cover are fixed with fixing blocks, and the fixing blocks are fixedly connected to the wheel core by screws.

[0011] Preferably, the bottom of the brake block has a through-hole for winding, a winding post is provided in the winding groove, the top surface of the brake block has a through-hole for threading that communicates with the winding groove, and the side wall of the upper cover has a through-hole for threading.

[0012] Preferably, the conductor is tightly wound around the outside of the winding post, with both ends passing through the wire notch and wire hole in sequence and extending into the inside of the upper cover. Both ends of the conductor are soldered to the corresponding solder points on the circuit board.

[0013] Compared with the prior art, the advantages of this utility model are: by setting up an early warning device, the status of the brake pads can be tracked in real time. When the wear is close to the limit, the early warning device will actively remind the user to maintain it in advance, avoid danger caused by brake failure, significantly improve the reliability of caster braking and the safety of handcart use, and solve the pain point of "difficulty in predicting potential brake hazards" of traditional casters. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the separated structure of the wheel core, wheel piece and bracket of this utility model;

[0016] Figure 3 This is a schematic diagram of one side of the wheel core structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure on the other side of the wheel core of this utility model;

[0018] Figure 5 This is a schematic diagram of the wheel core structure of this utility model;

[0019] Figure 6 This is a schematic diagram of the early warning device of this utility model;

[0020] Figure 7 This is a schematic diagram of the internal structure of the top cover of this utility model;

[0021] Figure 8 This is a schematic diagram of the brake block structure of this utility model.

[0022] The numbers on the map are:

[0023] 1. Wheel core; 2. Wheel piece; 3. Brake; 4. Mounting notch; 5. Brake block; 6. Round hole; 7. Assembly slot; 8. Warning device; 9. Circuit board; 10. Battery; 11. Cylindrical head; 12. Winding groove; 13. Winding post; 14. Wire threading notch; 15. Wire; 81. Top cover; 82. Bottom cover; 83. Fixing block; 84. Sealing ring; 85. Wire threading hole. Detailed Implementation

[0024] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0025] Reference Figure 1-8 As shown, a handcart caster with self-monitoring function includes a wheel core 1, two sets of wheel pieces 2 and a bracket 3. The two sets of wheel pieces 2 are respectively arranged on both sides of the wheel core 1. The wheel core 1, the two sets of wheel pieces 2 and the bracket 3 are connected by a pin and a nut to form the overall rotation and support structure of the handcart caster.

[0026] The circumferential surface of the wheel core 1 is provided with an installation notch 4, and a brake block 5 can be detachably installed in the installation notch 4. The wheel core 1 is also provided with an early warning device 8 for monitoring the wear of the brake block 5. The early warning device 8 works with the brake block 5 to issue a warning when the wear of the brake block 5 reaches a preset threshold, so as to remind the user to replace the brake block 5.

[0027] With the setting of the warning device 8, the status of the brake pad 5 can be tracked in real time. When the wear is close to the limit, the warning device 8 will actively remind the user to maintain it in advance, avoid danger caused by brake failure, significantly improve the reliability of caster braking and the safety of handcart use, and solve the pain point of "difficult to predict brake hazards" of traditional casters.

[0028] Furthermore, referring to Figure 3 , Figure 4 , Figure 5 as well as Figure 8 As shown, it is worth noting that the surface of the wheel core 1 is provided with a mounting groove 7 that matches the shape of the warning device 8, and the warning device 8 can be detachably installed in the mounting groove 7.

[0029] The early warning device 8 consists of a sealed box and a processing unit located inside the sealed box;

[0030] The processing unit includes a circuit board 9, a battery 10, and an alarm light. The battery 10 and the alarm light are both mounted on the circuit board 9. A wire 15 is connected between the circuit board 9 and the brake block 5.

[0031] The sealed box, circuit board 9, battery 10, and alarm light provide reliable hardware support for brake block 5 wear monitoring and battery power warning. The sealed box effectively prevents external moisture and dust from entering, protecting internal electronic components such as circuit board 9 and battery 10, ensuring stable operation of the monitoring function. Circuit board 9, as the core processing unit, collects and analyzes battery power data and brake block wear-related signals in real time through preset programs, and precisely controls the flashing logic of the alarm light. Battery 10 continuously supplies power to circuit board 9 and alarm light, ensuring that the monitoring and warning function is not limited by external power supply and adapts to various usage scenarios of handcart casters. The alarm light, based on the instructions of circuit board 9, flashes different colors: yellow to indicate low battery power and red to indicate critical brake block wear, intuitively providing users with feedback on the status of key caster components, timely warning of potential safety hazards and maintenance needs, and improving the safety and ease of maintenance of handcart casters.

[0032] Furthermore, referring to Figure 7 As shown, it is worth noting that the sealing box is connected by an upper cover 81 and a lower cover 82 by screws, and a sealing ring 84 is pressed between the upper cover 81 and the lower cover 82.

[0033] With the upper cover 81, lower cover 82, and sealing ring 84, the upper cover 81 and lower cover 82 are connected by screw assembly. This connection method facilitates subsequent disassembly and assembly operations, and makes it easier to replace and repair components such as the circuit board 9 and battery 10 inside the sealed box. At the same time, the sealing ring 84 pressed between the upper cover 81 and lower cover 82 can tightly fill the gap between them, effectively preventing external water, dust, etc. from entering the sealed box, providing good protection for the circuit board 9, battery 10, and cylindrical head 11, ensuring their stable operation, and thus ensuring the reliable functioning of the monitoring and early warning function of the early warning device.

[0034] Further, refer to the figure Figure 4 , Figure 5 as well as Figure 7 As shown, it is worth noting that the outer periphery of the wheel core 1 is provided with a circular hole 6 that communicates with the assembly groove 7. A cylindrical head 11 is placed inside the circular hole 6. The cylindrical head 11 is fixedly connected to the upper cover 81, and the alarm light is located inside the cylindrical head 11.

[0035] With the setting of the round hole 6 and the cylindrical head 11, the cylindrical head 11 can pass through the round hole 6 on the wheel core 1 and expose a part of the wheel core. This not only realizes the positioning and assembly of the sealing box and the wheel core 1, ensuring the accurate installation position of the sealing box, but also allows the alarm light inside the cylindrical head 11 to shine through smoothly, making it easy for users to clearly observe the flashing status of the alarm light from the outside. At the same time, only the part of the cylindrical head 11 is exposed on the outside of the caster, maintaining the cleanliness and aesthetics of the overall structure, and taking into account both the visibility of the warning signal and the coordination of the product appearance.

[0036] Furthermore, referring to Figure 6 , Figure 7 As shown, it is worth noting that there are fixing blocks 83 on both sides of the top cover 81, and the fixing blocks 83 are fixedly connected to the wheel core 1 by screws.

[0037] With the setting of fixing block 83, the fixing blocks on both sides of the top cover 81 can serve as force support points for connecting the sealing box and the wheel core 1. By using screws to fasten the fixing block 83 to the wheel core 1, the sealing box can be stably and firmly assembled on the wheel core 1, preventing the sealing box from loosening or shifting due to vibration or impact during the rolling or braking process of the caster.

[0038] Furthermore, referring to Figure 6-8 As shown, it is worth noting that the bottom of the brake block 5 is provided with a winding groove 12, the winding groove 12 is provided with a winding post 13, the top surface of the brake block 5 is provided with a wire-passing notch 14 that is connected to the winding groove 12, and the side wall of the upper cover 81 is provided with a wire-passing hole 85.

[0039] The conductor 15 is tightly wound around the outside of the winding post 13, and both ends of the conductor 15 pass through the wire notch 14 and the wire hole 85 in sequence and extend into the inside of the upper cover 81. Both ends of the conductor 15 are soldered to the corresponding solder points on the circuit board 9.

[0040] The arrangement of the winding groove 12, winding post 13, wire-passing notch 14, and wire-passing hole 85 provides a complete and standardized path for the laying of the wire 15. The wire 15 can pass through the winding groove 12, wrap around the winding post 13 once, and then be led out through the wire-passing notch 14. Subsequently, both ends of the wire 15 are passed through the wire-passing hole 85 of the upper cover 81 into the sealed box, and finally soldered to the circuit board 9, realizing the connection between the wire, the circuit board 9, and the brake block 5. This structural design can not only fix the wire in an orderly manner, avoiding the wire from falling off or accidentally breaking due to shaking or friction during the rolling of the caster or braking, ensuring the stability of the closed loop of the monitoring circuit; it can also make the wire 15 fit snugly against the brake block 5. When the brake block 5 wears to a critical state, it can precisely wear down the wire to trigger an alarm, while maintaining the neatness of the wire laying and avoiding interference with other components.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A handcart caster with self-monitoring function, the caster comprising a wheel core (1), wherein a mounting notch (4) is provided on the circumferential surface of the wheel core (1), and a brake block (5) is detachably mounted in the mounting notch (4), characterized in that, The wheel core (1) is also provided with a warning device (8) for monitoring the wear of the brake block (5). The surface of the wheel core (1) is provided with a mounting groove (7) that matches the shape of the warning device (8). The warning device (8) can be detachably installed in the mounting groove (7). The early warning device (8) consists of a sealed box and a processing unit located inside the sealed box.

2. A handcart caster with self-monitoring function according to claim 1, characterized in that, The processing unit includes a circuit board (9), a battery (10), and an alarm light. The battery (10) and the alarm light are both mounted on the circuit board (9). A wire (15) is connected between the circuit board (9) and the brake block (5).

3. A handcart caster with self-monitoring function according to claim 2, characterized in that, The sealing box is connected by an upper cover (81) and a lower cover (82) by screws, and a sealing ring (84) is pressed between the upper cover (81) and the lower cover (82).

4. A handcart caster with self-monitoring function according to claim 3, characterized in that, The outer periphery of the wheel core (1) is provided with a circular hole (6) that communicates with the assembly groove (7). A cylindrical head (11) is placed inside the circular hole (6). The cylindrical head (11) is fixedly connected to the upper cover (81). The alarm light is located inside the cylindrical head (11).

5. A handcart caster with self-monitoring function according to claim 4, characterized in that, Both sides of the top cover (81) are fixed with fixing blocks (83), and the fixing blocks (83) are fixedly connected to the wheel core (1) by screws.

6. A handcart caster with self-monitoring function according to claim 3, characterized in that, The bottom of the brake block (5) is provided with a winding groove (12), and a winding post (13) is provided in the winding groove (12). The top surface of the brake block (5) is provided with a wire-passing notch (14) that communicates with the winding groove (12). The side wall of the upper cover (81) is provided with a wire-passing hole (85).

7. A handcart caster with self-monitoring function according to claim 6, characterized in that, The conductor (15) is tightly wound around the outside of the winding post (13), and both ends of the conductor pass through the wire notch (14) and the wire hole (85) in sequence and extend into the inside of the upper cover (81). Both ends of the conductor (15) are soldered to the corresponding solder points on the circuit board (9).

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