Repulsive magnetic bolt type buckle

Abstract

The utility model relates to a repulsive magnetic bolt type buckle, which consists of a bolt fixing module and a handheld unlocking device. Wherein the bolt fixing module is composed of a fixing lock rod, a bottom shell, an inner sleeve, a permanent magnet, steel balls, a metal blocking piece, a spring and an upper cover, the inner sleeve is placed in the bottom shell, the permanent magnet is placed on the bottom layer of the inner sleeve, the three steel balls are placed on the permanent magnet, the metal blocking piece is placed, the spring is pressed in, and the upper cover is screwed. When the fixing lock rod is inserted through the bottom shell, the bolt fixing module which is tightly locked is formed. The handheld unlocking device is composed of a plastic shell, a lithium battery, a switch, a slide rheostat, a resistor, a power indicator, a copper coil, an iron core and an iron sheet. The buckle makes full use of homopolar repulsive magnetic poles, can be unlocked from the fixed lock rod end by holding the unlocking device by hand, and can also be unlocked by loosening the steel ball from the other end by using a common strong magnet. The repulsive magnetic bolt type buckle is pulled outwards through the steel balls and the inner sleeve, the steel balls are clamped in the annular groove of the fixed lock rod, and therefore physical locking is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of anti-theft devices, and particularly relates to a repulsive magnetic latch-type buckle. Background Art

[0002] Magnetic latch-type buckles are now widely used in anti-theft devices across various industries. These anti-theft magnetic buckles typically consist of a self-locking device and an induction coil. When a steel nail is inserted, the steel ball inside clamps the nail under the action of gravity. Magnetic latch-type buckles in the prior art have the following problems: First, the buckle's anti-theft function mainly relies on the steel ball lock to achieve a tight connection. However, this also means that if a sufficiently strong external magnetic field is used, these buckles may be illegally opened, thereby reducing their anti-theft effectiveness. Furthermore, the magnetic latch-type buckle structure is small in size and has poor pull-out resistance. Magnetic latch-type buckles can only be used with strong magnets, so that the internal steel ball is attracted by the strong magnet, compressing the spring upward, thereby moving the steel ball out of the groove of the steel needle, and then removing the steel needle. This method can only be unlocked with a strong magnet from the back shell direction. When this component is used to fix a component, the locking structure is difficult to disengage. Utility Model Content

[0003] In order to solve the above problems, the utility model proposes a repulsive magnetic latch type buckle.

[0004] A repulsive magnetic latch buckle, characterized in that it consists of a latch fixing module and a handheld unlocking device, wherein the latch fixing module includes a fixed lock rod, a bottom shell, an inner sleeve, a permanent magnet, a steel ball, a metal baffle, a spring and an upper cover, the bottom shell and the inner sleeve are both conical structures, the inner sleeve is placed in the bottom shell, and three openings are evenly opened on the lower side wall of the inner sleeve, and the width and length of the openings are both larger than the diameter of the steel balls, the permanent magnet is placed on the bottom of the inner sleeve, the permanent magnet is a lower N pole and an upper S pole, three steel balls are placed on the permanent magnet, each steel ball partially passes through the opening on the inner sleeve, and the diameter of the gap formed between the three steel balls is smaller than the diameter of the fixed lock rod, a metal baffle is placed on the steel ball, the spring is placed on the metal baffle and pressed, and then the upper cover and the bottom shell are screwed together, holes matching the diameter of the fixed lock rod are respectively opened at the bottom of the bottom shell, the bottom of the inner sleeve and the center of the permanent magnet, when the fixed lock rod is inserted through all the holes, the steel balls are pushed upward and the inner sleeve is driven to move upward;

[0005] The handheld unlocking device includes a plastic shell, in which a lithium battery is installed. The positive pole of the lithium battery is connected in series with a switch, a sliding rheostat, a resistor, and a power indicator light through a copper wire, and then wrapped around an iron core to form an electromagnetic coil, and finally connected back to the negative pole of the lithium battery. The iron core is covered with iron sheet, and the winding direction of the copper wire on the iron core makes the iron core form an electromagnet with N levels on the top and S levels on the bottom; the outer surface of the plastic shell is also provided with an adjustment device connected to the sliding rheostat and a switch button connected to the switch.

[0006] Furthermore, the fixed locking rod, the bottom shell, the inner sleeve, the steel ball, the metal baffle, the spring and the upper cover are all made of austenitic stainless steel.

[0007] The beneficial effect of this utility model is that the repulsive magnetic latch utilizes the principle of like poles repelling each other. The latch can be unlocked from the fixed lock rod end by holding the unlocking device, or by loosening the steel ball from the other end using a conventional strong magnet. The repulsive magnetic latch is achieved by pulling the steel ball and inner sleeve outward, causing the steel ball to lock tightly in the annular groove of the fixed lock rod, thereby achieving physical locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the split structure of the pin-fixing module.

[0009] Figure 2 This is a schematic diagram of the latch fixing module.

[0010] Figure 3 This is a schematic diagram of the external structure of the handheld unlocking device.

[0011] Figure 4 This is an example diagram of the internal structure of the handheld unlocking device.

[0012] Figure 5 This is the AA cross-section view.

[0013] Among them: fixed locking rod 1, bottom shell 2, inner sleeve 3, permanent magnet 4, steel ball 5, metal baffle 6, spring 7, upper cover 8, plastic shell 9, lithium battery 10, switch 11, sliding rheostat 12, resistor 13, iron sheet 14, iron core 15, copper wire 16, power indicator light 17, switch button 18, adjustment device 19. DETAILED DESCRIPTION

[0014] Example 1: A repulsive magnetic latch buckle, consisting of a latch fixing module and a handheld unlocking device, wherein the latch fixing module includes a fixed lock rod 1, a bottom shell 2, an inner sleeve 3, a permanent magnet 4, a steel ball 5, a metal baffle 6, a spring 7 and an upper cover 8. The bottom shell 2 and the inner sleeve 3 are both conical structures. The inner sleeve 3 is placed in the bottom shell 2, and three openings are evenly opened on the lower side wall of the inner sleeve 3. The width and length of the openings are both larger than the diameter of the steel ball 5. The permanent magnet 4 is placed at the bottom of the inner sleeve 3, with the permanent magnet 4 having the lower N pole and the upper S pole. The three steel balls 5 are placed on the bottom of the inner sleeve 3. Place it on the permanent magnet 4, each steel ball 5 partially passes through the opening on the inner sleeve 3, and the diameter of the gap formed by the three steel balls 5 is smaller than the diameter of the fixed locking rod 1, place a metal baffle 6 on the steel ball 5, place the spring 7 on the metal baffle and press it, then screw the upper cover 8 and the bottom shell 2 together with the threaded fasteners, and open holes with diameters matching those of the fixed locking rod 1 at the bottom of the bottom shell 2, the bottom of the inner sleeve 3, and the center of the permanent magnet 4. When the fixed locking rod 1 is inserted through all the holes, the steel balls 5 are pushed upward and the inner sleeve 3 is driven upward.

[0015] The handheld unlocking device includes a plastic shell 9, in which a lithium battery 10 is installed. The positive pole of the lithium battery 10 is connected in series with a switch 11, a sliding rheostat 12, a resistor 13, and a power indicator light 17 through a copper wire 16, and then wound around an iron core 15 to form an electromagnetic coil, and finally connected back to the negative pole of the lithium battery 10. The iron core 15 is covered with an iron sheet 16. The winding direction of the copper wire 16 on the iron core 15 makes the iron core 15 form an electromagnet with N levels on the upper side and S levels on the lower side; the outer surface of the plastic shell 9 is also provided with an adjustment device 19 connected to the sliding rheostat 12 and a switch button 18 connected to the switch 11.

[0016] The steel balls 5 are installed in the inner sleeve 3 and pressed into the bottom shell 2. The diameter of the gap formed by the three steel balls 5 is smaller than the diameter of the fixed locking rod 1. When the fixed locking rod 1 is inserted into the bottom shell 2, the steel balls 5 are pushed upward and the inner sleeve 3 is moved upward. Because the bottom shell 1 has a conical structure, the steel balls 5 move outward from the opening on the inner sleeve 3. At this time, the diameter of the gap formed by the three steel balls 5 is larger than the diameter of the fixed locking rod 1, and the fixed locking rod 1 can pass through the gap between the steel balls 5. After being fixed, the fixed locking rod 1 is affected by tension and gravity, driving the steel balls 5 and the inner sleeve 3 downward, and the steel balls 5 will be received back to their original position, thus achieving self-locking.

[0017] The electromagnet in the handheld unlocking device has a fixed upper N pole and a lower S pole, repelling the lower N pole and upper S pole of permanent magnet 4. Because the handheld unlocking device is at different distances from the electromagnet in inner sleeve 3, the magnetic force must be adjusted to propel permanent magnet 4 within inner sleeve 3. By turning on the power switch, the resistance of sliding rheostat 12 is adjusted via adjustment device 19, causing the current in the coil of copper wire 16 to change and adjust the magnetic force. To unlock, the handheld unlocking device is brought close to the end of fixed lock rod 1. By adjusting sliding rheostat 12 to change the magnetic intensity, the principle of like poles repelling each other pushes permanent magnet 4 upward, thereby loosening steel balls 5 and increasing the spacing between them, releasing fixed lock rod 1.

Claims

1. A repulsive magnetic latch buckle, characterized by: The invention is composed of a latch fixing module and a handheld unlocking device, wherein the latch fixing module includes a fixed lock rod, a bottom shell, an inner sleeve, a permanent magnet, a steel ball, a metal baffle, a spring and an upper cover. Both the bottom shell and the inner sleeve are conical structures. The inner sleeve is placed in the bottom shell, and three openings are evenly opened on the lower side wall of the inner sleeve, and the width and length of the openings are both larger than the diameter of the steel balls. The permanent magnet is placed at the bottom of the inner sleeve, with the lower N pole and the upper S pole. Three steel balls are placed on the permanent magnet, and each steel ball partially passes through the opening on the inner sleeve. The diameter of the gap formed between the three steel balls is smaller than the diameter of the fixed lock rod. A metal baffle is placed on the steel ball, and the spring is placed on the metal baffle and pressed tightly, and then the upper cover and the bottom shell are screwed together. Holes matching the diameter of the fixed lock rod are respectively opened at the bottom of the bottom shell, the bottom of the inner sleeve and the center of the permanent magnet. When the fixed lock rod is inserted through all the holes, the steel balls are pushed upward and the inner sleeve is driven to move upward. The handheld unlocking device includes a plastic shell, in which a lithium battery is installed. The positive pole of the lithium battery is connected in series with a switch, a sliding rheostat, a resistor, and a power indicator light through a copper wire, and then wrapped around an iron core to form an electromagnetic coil, and finally connected back to the negative pole of the lithium battery. The iron core is covered with iron sheet, and the winding direction of the copper wire on the iron core makes the iron core form an electromagnet with N levels on the top and S levels on the bottom; the outer surface of the plastic shell is also provided with an adjustment device connected to the sliding rheostat and a switch button connected to the switch.

2. A repulsive magnetic latch type buckle as claimed in claim 1, characterized in that The fixed locking rod, bottom shell, inner sleeve, steel ball, metal baffle, spring and upper cover are all made of austenitic stainless steel.

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