Warning magnetic schoolbag buckle
By integrating reflective and flashing warning components into the backpack buckle, and utilizing the positive attraction and repulsive force of magnets, the backpack buckle can be accurately inserted and opened with one click, solving the problems of insufficient safety and operability in existing technologies, and improving visibility and safety during the day and at night.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN AMCO FASTENER CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-05-19
AI Technical Summary
Existing backpack buckles lack warning capabilities and have poor security. They also rely solely on the positive attraction of magnets to assist in locking, failing to utilize the repulsive force generated by magnet misalignment to assist in opening, resulting in inconvenience and insufficient security.
A warning magnetic backpack buckle was designed, which combines reflective and flashing warning components. It uses the positive attraction and misalignment repulsion of the upper and lower magnets to achieve precise insertion and one-click pop-out. Combined with an electric mechanism, it dynamically flashes warnings in dark environments. It also improves nighttime visibility and safety through the coordinated work of vibration and light sensors.
It significantly enhances visibility and safety both day and night, simplifies the operation process, improves reliability and service life, and is suitable for school bags, sports backpacks and outdoor equipment, meeting the safety needs of high-risk environments.
Smart Images

Figure CN224250905U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of schoolbag buckles, and in particular relates to warning magnetic schoolbag buckles. Background Technology
[0002] Backpack buckles are a seemingly simple yet crucial component in backpack design. They not only secure the bag and protect belongings, but also influence the overall user experience. From materials to structure, backpack buckle designs often balance practicality and aesthetics, becoming the finishing touch in the backpack's details.
[0003] Comparing this to Chinese patent CN219645225U, which discloses a backpack buckle, the invention includes a separable male buckle assembly and a female buckle assembly. The female buckle assembly has a female locking buckle. The male buckle assembly includes an opening / closing key and a male clamping component, with a pre-positioning magnetic attraction module between the male and female clamping components. The opening / closing key is hinged to the male clamping component, and a locking magnetic attraction module is provided between the male clamping component and the opening / closing key. External force can overcome the magnetic force and cause the opening / closing key to swing and tilt. The male clamping component has a swingable locking block and a torsion spring that applies force to the locking block. The locking block has a male locking buckle that engages with the female locking buckle. The opening / closing key has an unlocking rod. When the opening / closing key is tilted, the unlocking component overcomes the torsion spring force and drives the locking block to rotate, thereby separating the male locking buckle from the female locking buckle. The locking buckle on the swingable locking block engages with the female locking buckle. The locking block is easy to install, facilitates stable engagement and disengagement, has a simple structure, and reduces production and installation costs.
[0004] However, the aforementioned patents lack warning capabilities, have poor security, and only utilize the attraction generated by aligned magnets to assist the latch, failing to utilize the repulsive force generated by misaligned magnets to assist in opening. Therefore, a new device needs to be designed. Summary of the Invention
[0005] The purpose of this invention is to provide a warning magnetic backpack buckle to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] The magnetic backpack buckle includes a separable upper buckle assembly and a lower buckle assembly, and a warning component for reflective and flashing warning mounted on the top of the upper buckle assembly. The upper buckle assembly includes an upper fixing base with an upper fixing member mounted on one side of its bottom. A clamping mechanism for locking and unlocking is slidably mounted inside the upper fixing base. An upper magnet is attached to the middle of the clamping mechanism, and the end of the clamping mechanism protrudes from the upper fixing base. The lower buckle assembly includes a lower fixing base with a lower fixing member screwed to its bottom. A connector is provided at the top of the lower fixing base, and a lower magnet is attached inside the connector. When the upper and lower buckle assemblies are locked together, the lower magnet and the upper magnet are aligned vertically. The warning component includes a transparent cover with several reflective stickers evenly distributed around its circumference. An electric mechanism for sensing movement and flashing warning light is fixedly mounted inside the transparent cover.
[0008] Furthermore: the electric mechanism includes a PCB board, a vibration sensor is installed at the center of the PCB board, a light sensor is provided on one side of the vibration sensor, a number of flashing elements are evenly distributed around the circumference of the PCB board, a button battery is installed on the bottom surface of the PCB board, and the PCB board, the button battery, the vibration sensor, the light sensor and the flashing elements are electrically connected.
[0009] Furthermore, the flashing element uses an LED tri-color light.
[0010] Furthermore, the clamping mechanism includes a sliding member slidably installed inside the upper fixed seat, two return springs symmetrically installed on both sides of the sliding member, and two clamping plates symmetrically arranged in the middle of the sliding member.
[0011] Furthermore, a pull tail is attached to one end of the sliding member that protrudes from the upper fixed seat.
[0012] Furthermore, the bottom surface of the lower fixing seat is symmetrically provided with two pointed nails, and both the lower fixing seat and the upper fixing seat have several anti-slip grooves evenly distributed around their circumferences.
[0013] Furthermore, the connector is frustoconical in shape.
[0014] Compared with existing technologies, the beneficial effects are:
[0015] The reflective material around the transparent cover passively reflects light when there is sufficient light, improving daytime visibility; in dark environments, the light sensor triggers the LED tri-color lights to flash regularly, and the dynamic response is achieved through vibration sensing (such as automatic flashing when walking), significantly enhancing safety at night or in low-light environments.
[0016] Light control and vibration sensing work together to avoid unnecessary power consumption and extend button battery life; suitable for school bags, sports backpacks and outdoor equipment, taking into account the safety needs of daily use and high-risk environments (such as night cycling and outdoor activities).
[0017] When the upper and lower magnets are aligned, they generate an attractive force, guiding the connector to be precisely inserted into the holding plate, simplifying the fastening operation and making it especially suitable for children to operate with one hand; when unlocking, the misaligned magnets generate a repulsive force, which, combined with the elasticity of the return spring, enables one-click pop-out, avoiding the jamming or forced pulling problems of traditional fasteners; the mechanical clamping and magnetic attraction of the holding plate work together to prevent accidental disengagement and improve reliability;
[0018] The pull-tail design facilitates unlocking by applying force, and the automatic return spring reduces operating steps; the concealed layout of the slider and return spring reduces external wear and extends service life. Attached Figure Description
[0019] Figure 1 This is an exploded view of the warning magnetic backpack buckle described in this utility model;
[0020] Figure 2 This is an appearance drawing of the warning magnetic backpack buckle described in this utility model;
[0021] Figure 3 This is a front view of the warning magnetic backpack buckle described in this utility model;
[0022] Figure 4 This is a top axonometric view of the upper buckle assembly of the warning magnetic backpack buckle described in this utility model;
[0023] Figure 5 This is a bottom-view axonometric view of the upper buckle assembly of the warning magnetic backpack buckle described in this utility model;
[0024] Figure 6 This is a schematic diagram of the lower buckle component of the warning magnetic backpack buckle described in this utility model;
[0025] Figure 7 This is a right view of the lower buckle assembly of the warning magnetic backpack buckle described in this utility model;
[0026] Figure 8 This is a schematic diagram of the warning component of the warning magnetic backpack buckle described in this utility model;
[0027] Figure 9 This is a top axonometric view of the sliding component of the warning magnetic backpack buckle described in this utility model;
[0028] Figure 10 This is a bottom-view axonometric drawing of the sliding component of the warning magnetic backpack buckle described in this utility model.
[0029] In the attached diagram, the following are the reference numerals: 101, upper fixing base; 102, upper fixing component; 103, sliding component; 104, upper magnet; 105, return spring; 106, pull tail; 107, holding plate; 201, lower fixing base; 202, lower fixing component; 203, connector; 204, lower magnet; 205, spike; 301, transparent cover; 302, PCB board; 303, vibration sensor; 304, light sensor; 305, flashing component; 306, button battery; 307, reflective sticker. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0031] Please see Figures 1-10 The warning magnetic backpack buckle includes a separable upper buckle assembly and a lower buckle assembly, and a warning assembly for reflective and flashing warning installed on the top of the upper buckle assembly.
[0032] In this embodiment: the upper fastening assembly includes an upper fixing base 101, an upper fixing member 102 is installed on one side of the bottom of the upper fixing base 101, a clamping mechanism for locking and unlocking is slidably installed inside the upper fixing base 101, an upper magnet 104 is attached to the middle of the clamping mechanism, and the end of the clamping mechanism protrudes from the upper fixing base 101; the clamping mechanism includes a sliding member 103 slidably installed inside the upper fixing base 101, two return springs 105 are symmetrically installed on both sides of the sliding member 103, and two clamping plates 107 are symmetrically arranged in the middle of the sliding member 103; a pull tail 106 is tied to one end of the sliding member 103 protruding from the upper fixing base 101; during installation, the backpack strap is pressed and fixed to the upper fixing base 101 by screws or rivets through the upper fixing member 102. When the plug 203 is inserted into the upper fixed seat 101 from the bottom, the upper magnet 104 in the middle of the sliding member 103 attracts the lower magnet 204 inside the plug 203 through magnetic force. The auxiliary plug 203 is inserted between the retaining plates 107 and fixed. When unlocking, the sliding member 103 is pulled to slide in the upper fixed seat 101 by the pull tail 106. At the same time, the return spring 105 is compressed to store the elastic force. The retaining plate 107 opens to release the plug 203. At the same time, the upper magnet 104 and the lower magnet 204 are misaligned and form a repulsive force. The upper buckle component pushes the lower buckle component to pop open and complete the separation. Then the pull tail 106 is released, the elastic force of the return spring 105 is released, and the sliding member 103 is pushed to reset.
[0033] In this embodiment: the lower buckle assembly includes a lower fixing base 201, a lower fixing member 202 screwed to the bottom of the lower fixing base 201, and a plug 203 provided on the top of the lower fixing base 201. A lower magnet 204 is pasted inside the plug 203. When the upper buckle assembly and the lower buckle assembly are fastened and locked, the lower magnet 204 and the upper magnet 104 are aligned vertically. Two spikes 205 are symmetrically provided on the bottom surface of the lower fixing base 201. Several anti-slip grooves are evenly distributed around the circumference of both the lower fixing base 201 and the upper fixing base 101. The plug 203 is frustoconical. During installation, the lower fixing member 202 is screwed onto the lower fixing base 201 to press and fix the lower shoulder strap of the backpack. At the same time, the spikes 205 on the bottom surface of the lower fixing base 201 are inserted into the lower shoulder strap of the backpack to prevent slippage. When fastened and locked, the plug 203 is inserted into the retaining plate 107 for fixation. The lower magnet 204 and the upper magnet 104 cooperate to assist in the insertion and fixation through attraction.
[0034] In this embodiment: the warning component includes a transparent cover 301, with a plurality of reflective stickers 307 evenly distributed around its circumference. An electric mechanism for sensing movement and flashing light to issue a warning is fixedly installed inside the transparent cover 301. The electric mechanism includes a PCB board 302, with a vibration sensor 303 mounted at its center. A light sensor 304 is located on one side of the vibration sensor 303. A plurality of flashing elements 305 are evenly distributed around the circumference of the PCB board 302. A button battery 306 is mounted on the bottom surface of the PCB board 302. The PCB board 302 and the button battery 306... The button cell battery 306, vibration sensor 303, light sensor 304, and flashing element 305 are electrically connected. The flashing element 305 uses a tri-color LED light. When there is light, the reflective sticker 307 on the circumference of the transparent cover 301 provides a warning by reflecting light. In the dark, the light sensor 304 is activated, and the button cell battery 306 supplies power to the PCB board 302. When the vibration sensor 303 vibrates, it connects the PCB board 302 and the flashing element 305, and the flashing element 305 begins to flash regularly. The flashes pass through the transparent cover 301 to provide a warning.
[0035] Working principle: During installation, screws or rivets are used to press and fix the upper shoulder strap of the backpack onto the upper fixing base 101 through the upper fixing part 102, and the lower fixing part 202 is screwed onto the lower fixing base 201 to press and fix the lower shoulder strap of the backpack. At the same time, the spikes 205 on the bottom surface of the lower fixing base 201 are inserted into the lower shoulder strap of the backpack to prevent slippage.
[0036] When locked, hold the lower fixing base 201 and insert the connector 203 into the upper fixing base 101 from the bottom. The upper magnet 104 in the middle of the sliding member 103 attracts the lower magnet 204 inside the connector 203 through magnetic force. The auxiliary connector 203 is inserted between the retaining plates 107 and fixed, thus completing the locking of the upper and lower locking components.
[0037] When unlocking, the slider 103 is pulled by the pull tail 106 to slide within the upper fixed seat 101, while the return spring 105 is compressed to store elastic force. The retaining plate 107 opens to release the plug 203. At the same time, the upper magnet 104 and the lower magnet 204 are misaligned, forming a repulsive force. The upper buckle component pushes the lower buckle component to pop open, completing the separation. Then the pull tail 106 is released, the elastic force of the return spring 105 is released, and the slider 103 is pushed to reset.
[0038] When there is light, the reflective sticker 307 around the transparent cover 301 provides a warning by reflecting light. In the dark, the light sensor 304 is activated, and the button battery 306 powers the PCB board 302. When the vibration sensor 303 vibrates, it connects the PCB board 302 and the flashing element 305. The flashing element 305 then flashes regularly, and the flashes pass through the transparent cover 301 to provide a warning.
[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A warning magnetic backpack buckle, comprising a separable upper buckle assembly and a lower buckle assembly, characterized in that: It also includes a warning component for reflective and flashing warning installed on the top of the upper buckle assembly; The upper buckle assembly includes an upper fixing seat (101), an upper fixing member (102) is installed on one side of the bottom of the upper fixing seat (101), a clamping mechanism for locking and unlocking is slidably installed inside the upper fixing seat (101), an upper magnet (104) is pasted in the middle of the clamping mechanism, and the end of the clamping mechanism protrudes from the upper fixing seat (101). The lower buckle assembly includes a lower fixing base (201), a lower fixing member (202) is screwed to the bottom of the lower fixing base (201), a plug (203) is provided on the top of the lower fixing base (201), and a lower magnet (204) is pasted inside the plug (203). When the upper buckle assembly and the lower buckle assembly are fastened and locked, the lower magnet (204) and the upper magnet (104) are aligned vertically. The warning component includes a transparent cover (301), on which a plurality of reflective stickers (307) are evenly distributed around the circumference of the transparent cover (301), and an electric mechanism for sensing motion and flashing light to issue a warning is fixedly installed inside the transparent cover (301).
2. The warning magnetic backpack buckle according to claim 1, characterized in that: The electric mechanism includes a PCB board (302), a vibration sensor (303) is installed at the center of the PCB board (302), a light sensor (304) is provided on one side of the vibration sensor (303), a number of flashing elements (305) are evenly distributed around the circumference of the PCB board (302), a button battery (306) is installed on the bottom surface of the PCB board (302), and the PCB board (302), the button battery (306), the vibration sensor (303), the light sensor (304) and the flashing elements (305) are electrically connected.
3. The warning magnetic backpack buckle according to claim 2, characterized in that: The flashing element (305) uses an LED tri-color light.
4. The warning magnetic backpack buckle according to claim 1, characterized in that: The clamping mechanism includes a sliding member (103) slidably installed inside the upper fixed seat (101), two return springs (105) are symmetrically installed on both sides of the sliding member (103), and two clamping plates (107) are symmetrically arranged in the middle of the sliding member (103).
5. The warning magnetic backpack buckle according to claim 4, characterized in that: The slider (103) has a pull tail (106) attached to one end of the upper fixed seat (101).
6. The warning magnetic backpack buckle according to claim 1, characterized in that: The bottom surface of the lower fixing seat (201) is symmetrically provided with two spikes (205), and the circumference of both the lower fixing seat (201) and the upper fixing seat (101) is evenly distributed with several anti-slip grooves.
7. The warning magnetic backpack buckle according to claim 1, characterized in that: The connector (203) is frustoconical.