Luggage and magnetic buckling device thereof

By designing the base, engaging component, and lock of the magnetic fastening device, the engagement and disengagement of the plug are controlled by magnetic attraction and the state of the lock, solving the problem of the lack of anti-theft function in existing magnetic fastening devices and achieving a convenient and safe fastening effect.

CN224179299UActive Publication Date: 2026-05-01SINOX CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SINOX CO LTD
Filing Date
2025-04-21
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

The magnetic closures on existing bags or backpacks lack anti-theft features, cannot be locked, and pose a security risk.

Method used

Design a magnetic fastening device including a base, a locking component, a lock, a plug, a first element, and a second element. It utilizes magnetic attraction to quickly align the plug with the insertion hole, and achieves the locking and unlocking of the plug through the locked and unlocked states of the lock, providing an anti-theft effect.

Benefits of technology

The magnetic fastening device design enables convenient fastening and anti-theft functions, ensuring that the plug cannot be removed from the insertion hole when locked, thus improving safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a luggage and its magnetic buckling device, including base, clamping piece, lockset, plug, first element and second element wherein the first element and second element make the plug tend to insert into the insertion hole of base, and when the lockset is in the locking state, lockset makes the clamping piece keep clamping plug, and then make the plug unable to break away from the insertion hole, and the magnetic buckling device of luggage can be locked to the insertion hole. When the lock is in an unlocking state, the lock enables the clamping piece to allow the plug to be separated from the insertion hole, so that the magnetic attraction force helps the plug and the insertion hole to be quickly aligned and combined, a user can set the lock to a locking state, the plug can be prevented from being separated from the insertion hole through the clamping piece, and then the anti-theft effect is achieved.
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Description

Bags and their magnetic fastening devices Technical Field

[0001] This utility model relates to a fastening device, particularly a fastening device that can be used in various daily necessities such as bags, backpacks, and boxes, and can detachably connect two components. In addition, this utility model can also be used in various locks. Background Technology

[0002] Existing magnetic closure devices for bags or backpacks simply use two magnets that attract each other between the bag or bag body and the opening. The opening is held in place by the magnets. However, the drawback of existing magnetic closure devices is that the magnets can be used to separate the bags, and they do not prevent theft. They are also inconvenient to use. Therefore, the closure devices that cannot be locked need to be improved. Summary of the Invention

[0003] In view of the aforementioned shortcomings and deficiencies of the prior art, the present invention provides a magnetic fastening device that can be easily fastened.

[0004] To achieve the aforementioned utility model objective, the technical means employed in this utility model is to design a magnetic fastening device, which includes:

[0005] A base, which includes at least one insertion hole;

[0006] A snap-fit ​​component is movably or rotatably disposed within the base;

[0007] A lock that connects the base and the locking element, and has a locked state and an unlocked state;

[0008] At least one plug, which can be inserted into the at least one insertion hole;

[0009] A first element, which is disposed on the base; and

[0010] At least one second element is disposed on the at least one plug, and there is a magnetic attraction between the first element and the at least one second element that tends to insert the at least one plug into the at least one insertion hole;

[0011] When the at least one plug has been inserted into the at least one insertion hole and the lock is in the locked state, the lock keeps the locking member engaged with the at least one plug, thereby preventing the at least one plug from disengaging from the at least one insertion hole;

[0012] When the at least one plug is inserted into the at least one insertion hole and the lock is in the unlocked state, the lock causes the engaging member to allow the at least one plug to disengage from the at least one insertion hole.

[0013] When this invention is in use, when the plug is close to the insertion hole of the base, the magnetic attraction between the first element and the second element helps the user quickly align the plug with the insertion hole, making it easy to combine the two. After the plug is inserted into the insertion hole of the base, the user can set the lock to the locked state, which can prevent the plug from coming out of the insertion hole through the locking member, thereby achieving the anti-theft effect.

[0014] Furthermore, in the magnetic fastening device, the magnetic attraction between the first element and the at least one second element causes the at least one plug to push the engaging member and insert it into the at least one insertion hole.

[0015] Furthermore, in the magnetic fastening device, when the lock is in the unlocked state, the at least one plug can push the engaging member when it is disengaged from the at least one insertion hole, so that the at least one plug can disengage from the at least one insertion hole.

[0016] Furthermore, in the magnetic fastening device, the at least one plug is provided with a first guide structure and a second guide structure. When the lock is in the unlocked state, the at least one plug pushes the engaging member through the first guide structure during the process of inserting into the at least one insertion hole, and pushes the engaging member through the second guide structure during the process of disengaging from the at least one insertion hole.

[0017] Furthermore, in the magnetic fastening device, the base is provided with an elastic element, and when the magnetic attraction causes the at least one plug to push the engaging member, the engaging member can drive the elastic element to elastically deform.

[0018] Furthermore, the magnetic locking device, wherein the lock is a combination lock and includes at least one pin, wherein when the lock is in the unlocked state, the locking member can move or rotate toward the at least one pin to allow the at least one plug to disengage from the at least one insertion hole.

[0019] Furthermore, in the magnetic fastening device, the engaging member includes at least one engaging member unlocking part, and the at least one digit wheel is provided with a digit wheel unlocking part. When the lock is in the unlocked state, the at least one engaging member unlocking part corresponds to the digit wheel unlocking part of the at least one digit wheel, allowing the engaging member to move or rotate toward the at least one digit wheel.

[0020] Furthermore, in the aforementioned magnetic fastening device, the base includes a limiting structure, and the engaging member is provided with a guide structure, which abuts against the limiting structure to allow the engaging member to move relative to the base.

[0021] Furthermore, in the magnetic fastening device, the limiting structure is arc-shaped around the at least one insertion hole, and the guide structure is forked and abuts against both sides of the limiting structure.

[0022] To achieve the aforementioned utility model objectives, the present utility model also designs a bag, which includes:

[0023] A body having a receiving space and an opening communicating with the receiving space;

[0024] An opening portion has a connecting side and an operating side on its two sides, wherein the connecting side is connected to the main body; and

[0025] As with the magnetic fastening device described above, the base is located on the body, and the at least one plug is located on the opening portion.

[0026] When this utility model is in use, the magnetic attraction between the first and second elements of the magnetic fastening device helps the user quickly align the plug and the insertion hole, making it easy to combine the two and conveniently close the opening of the main body. The user can then set the lock to the locked state, which will prevent the plug from coming out of the insertion hole and prevent others from opening the opening of the main body through the opening part, thereby achieving the anti-theft effect.

[0027] Furthermore, in the aforementioned bag, the at least one insertion hole divides the base into a first shell portion away from the operating side and a second shell portion near the operating side, and the first shell portion is higher than the second shell portion along a height direction protruding from the body.

[0028] Furthermore, in the aforementioned bag, the lock is connected to the second housing, and the engaging member is retractable into the second housing to allow the at least one plug to disengage from the at least one insertion hole. Attached Figure Description

[0029] Figure 1 is a perspective view of the first embodiment of this utility model.

[0030] Figure 2 is an exploded view of the components of the first embodiment of this utility model.

[0031] Figure 3 is a side sectional view of the first embodiment of the present invention.

[0032] Figure 4 is a front view sectional view along the AA section line in Figure 3.

[0033] Figure 5 is a side view sectional diagram of the first embodiment of this utility model.

[0034] Figure 6 is a front view sectional view along the BB section line in Figure 5.

[0035] Figure 7 is a cross-sectional view of another side of the first embodiment of the present invention.

[0036] Figure 8 is a front cross-sectional view of the lock in the locked state according to the first embodiment of the present invention.

[0037] Figure 9 is a front cross-sectional view of the second embodiment of this utility model. Detailed Implementation

[0038] The following, in conjunction with the accompanying drawings and preferred embodiments of the present invention, further illustrates the technical means adopted by the present invention to achieve its intended purpose.

[0039] Please refer to Figures 1 to 4. The first embodiment of the magnetic fastening device of this utility model includes a base 10, a locking member 20, a lock 30, at least one plug 40, a first element 50, and at least one second element 60.

[0040] As shown in Figures 1 to 4, the aforementioned base 10 includes at least one insertion hole 11; the engaging member 20 is movably or rotatably disposed within the base 10; the lock 30 connects the base 10 and the engaging member 20, and has a locked state as shown in Figure 8 and an unlocked state as shown in Figures 4 and 6. In this preferred embodiment, the lock is a combination lock, but it can also be a key lock or an electronic lock, etc., and the lock can be disposed within the base 10 or connected to the base 10 from the outside; as shown in Figures 2 and 3, the plug 40 can be inserted into the insertion hole 11.

[0041] Please refer to Figure 3. The aforementioned first element 50 is disposed on the base 10; the second element 60 is disposed on the plug 40, and there is a magnetic attraction between the first element 50 and the second element 60 that tends to insert the plug 40 into the insertion hole 11. Therefore, when the plug 40 approaches the insertion hole 11, the user does not need to concentrate on aligning the plug 40 with the insertion hole 11, and can easily insert the at least one plug 40 into the at least one insertion hole 11 through the guiding effect generated by the magnetic attraction between the first element 50 and the second element 60.

[0042] In addition, the magnetic attraction between the first element 50 and the second element 60 may only have a guiding effect, but the magnetic attraction may also be strong enough to pull the plug 40 into the insertion hole 11, which is also acceptable.

[0043] Furthermore, the number of the second element 60 corresponds to the number of plugs 40, and the first element 50 is a shared first element 50, that is, a single first element 50 can simultaneously magnetically attract the second elements 60 on multiple plugs 40. The number of the first element 50 can also be set to correspond to the number of insertion holes 11. This utility model does not limit whether the number of the first element 50 corresponds to the number of the second element 60.

[0044] The first element 50 and the second element 60 can be either a magnet or a magnetic metal, or both can be magnets, as long as they can generate a magnetic attraction between them.

[0045] Furthermore, the first element 50 and the second element 60 can be independent elements or integrally formed on the element. For example, the first element 50 can be integrally formed with the base 10, in which case the base 10 itself is a magnet or magnetic metal. The second element 60 can be integrally formed with the plug 40, in which case the plug 40 itself is a magnet or magnetic metal.

[0046] When the plug 40 is inserted into the aforementioned insertion hole 11 and the lock 30 is in the unlocked state, as shown in FIG. 7, the lock 30 causes the engaging member 20 to allow the plug 40 to disengage from the insertion hole 11. In this preferred embodiment, the engaging member 20 can move or rotate when the plug 40 is inserted and disengaged. That is, when the lock 30 is in the unlocked state, as shown in FIG. 3 to FIG. 7, the lock 30 causes the engaging member 20 to move or rotate, thereby allowing the plug 40 to be inserted into or disengaged from the insertion hole 11. Specifically, when the plug 40 is not yet inserted into the insertion hole 11 and the lock 30 is in the unlocked state, as shown in FIG. 5 and FIG. 6, the lock 30 also causes the engaging member 20 to allow the plug 40 to be inserted into the insertion hole 11. In other embodiments, the engaging member 20 can be designed to move or rotate only when the plug 40 is pulled out during unlocking, while other entry methods are designed when the plug 40 is inserted.

[0047] On the other hand, as shown in Figure 8, when the plug 40 is inserted into the insertion hole 11 and the lock 30 is in the locked state, the lock 30 keeps the locking member 20 locked to the plug 40. At this time, the locking member 20 cannot move or rotate, and the plug 40 will be locked in the locked position as shown in Figure 3. Therefore, it is not allowed for the plug 40 to be unable to disengage from the insertion hole 11.

[0048] In this preferred embodiment, as shown in Figures 3 to 6, the engaging member 20 is linearly movable within the base 10. In other embodiments, the engaging member 20 may also be rotatably disposed within the base 10. When the lock 30 is in the unlocked state, the lock 30 allows the engaging member 20 to rotate, thereby allowing the at least one plug 40 to be inserted into or disengaged from the at least one insertion hole 11. For example, when the plug 40 is inserted into the insertion hole 11, it pushes the engaging member 20 to rotate along a pivot toward the lock 30 and exit the insertion hole 11. However, this is not a limitation. As long as the engaging member 20 can move or rotate when the lock 30 is unlocked, allowing the plug 40 to disengage from the insertion hole 11, this is the content of the technical solution of this utility model.

[0049] When this utility model is used, that is, when the aforementioned magnetic fastening device is applied to a bag, the magnetic attraction between the first element 50 and the second element 60 helps the user quickly align the plug 40 and the insertion hole 11, making it easy to combine the two. The user can set the lock to the locked state through the lock 30, and the locking member 20 can prevent the plug 40 from falling out of the insertion hole 11, thereby achieving the anti-theft effect.

[0050] More specifically, as shown in Figures 1, 2, and 3, in this preferred embodiment, when the aforementioned magnetic fastening device is applied to a bag, the bag can be a bag, backpack, handbag, briefcase, bicycle bag (bicycle seat bag, bicycle rear seat bag), suitcase, other boxes or bags, and other daily necessities, and includes a body 81, an opening part 82, and a magnetic fastening device as described above. The body 81 is the main part of the bag, including a storage space R for holding items and an opening connecting the storage space, i.e., an opening for the user to take out and place items; the opening part 82 is the part used to open and close the opening of the body 81, with a connecting side 822 and an operating side 821 on each side, wherein the connecting side 822 is connected to the body 81.

[0051] The opening portion 82 can take various forms. For example, in this preferred embodiment, the bag is a tote bag, and its opening portion 82 is a strap for connecting a magnetic fastening device. Alternatively, for example, when the bag is a suitcase, the opening portion 82 can be a zipper pull.

[0052] The base 10 of the aforementioned magnetic fastening device is disposed on the body 81, and the plug 40 is disposed on the opening portion 82. In this preferred embodiment, the base 10 is disposed on the front side of the body 81, and the plug 40 is disposed on the strip-shaped opening portion 82 near the operating side, with the plug 40 being an independent component attached to the opening portion 82. Alternatively, multiple plugs 40 may be integrally formed as an independent component and then attached to the opening portion 82; or the plug 40 and the opening portion 82 may be integrally formed, for example, in the case of a suitcase where the opening portion 82 is a zipper pull, the plug 40 may be part of the zipper pull.

[0053] Therefore, when this utility model is in use, the magnetic attraction between the first element 50 and the second element 60 of the magnetic fastening device helps the user quickly align the plug 40 and the insertion hole 11, making it easy to combine the two and conveniently close the opening of the body 81. The user can then set the lock to the locked state through the lock 30, which can prevent the plug 40 from disengaging from the insertion hole 11 through the locking member 20, preventing others from opening the opening of the body 81 through the opening part 82, thereby achieving the anti-theft effect.

[0054] Furthermore, the magnetic attraction between the first element 50 and the second element 60 allows the plug 40 to push the engaging member 20 and insert it into the insertion hole 11. Specifically, as shown in FIG3, in this preferred embodiment, the engaging member 20 abuts against an elastic element 201 and can be reset to extend into the insertion hole 11. When the magnetic attraction between the first element 50 and the second element 60 causes the plug 40 to extend into the insertion hole 11, the plug 40 pushes against the engaging member 20, causing the engaging member 20 to drive the elastic element 201 to elastically deform (e.g., compress) and withdraw from the insertion hole 11, so that the plug 40 can be fully inserted into the insertion hole 11. In this preferred embodiment, the elastic element 201 is a compression spring, but it is not limited to this. It can also be other types of springs, or even other means, such as two repulsive magnets, as long as the engaging member 20 can be reset after it moves or rotates.

[0055] In this way, users only need to set the lock 30 to the unlocked state and move the plug 40 to the vicinity of the insertion hole 11. The plug 40 can then be fully inserted into the insertion hole 11 by magnetic attraction, which greatly improves the convenience of closing the bag.

[0056] Furthermore, when the lock 30 is in the unlocked state, the aforementioned plug 40 can push the locking member 20 when it disengages from the corresponding insertion hole 11, allowing the plug 40 to disengage from the insertion hole 11. In this way, the user can conveniently insert and remove the plug 40 even when the lock 30 is in the unlocked state, in order to open the bag to take out or put in items.

[0057] Specifically, in this preferred embodiment, the plug 40 is provided with a first guide structure 41 and a second guide structure 42. When the lock 30 is in the unlocked state, as shown in FIG. 5, during the process of inserting the plug 40 into the insertion hole 11, the first guide structure 41 pushes the engaging member 20, causing the engaging member 20 to exit the insertion hole 11, so that the plug 40 can be inserted. And as shown in FIG. 7, during the process of disengaging from the insertion hole 11, the second guide structure 42 pushes the engaging member 20, causing the engaging member 20 to exit the insertion hole 11, so that the plug 40 can be disengaged. In this preferred embodiment, the first guide structure 41 and the second guide structure 42 are inclined surfaces or curved surfaces facing different directions (front and rear sides). In this way, the user can easily insert or remove the plug 40 when the lock 30 is in the unlocked state, without manually moving or rotating the engaging member 20, so that the engaging member 20 can release the restriction on the plug 40.

[0058] Furthermore, in this preferred embodiment, the first guide structure 41 and the second guide structure 42 are formed adjacent to each other on one side of the plug 40, thereby allowing the single-sided guide engagement member 20 to move or rotate. In other embodiments, the plug 40 may be provided with the first guide structure 41 and the second guide structure 42 spaced apart, or the first guide structure 41 and the second guide structure 42 may be formed in a ring on the plug 40. As long as both the first guide structure 41 and the second guide structure 42 are present, the engagement member 20 can be released from its restriction on the plug 40 without manual movement or rotation. Moreover, the plug 40 may also have only the first guide structure 41 or only the second guide structure 42 as needed, that is, it can provide the function of manually controlling the engagement member 20 only for insertion or removal.

[0059] Preferably, in this preferred embodiment, as shown in FIG3, the plug 40 is provided with a locking recess 43 near the first guide structure 41 and the second guide structure 42. When the lock 30 is in the locked state, the locking member 20 is fixedly inserted into the locking recess 43 to prevent the plug 40 from exiting the insertion hole 11.

[0060] Furthermore, as shown in Figures 4 and 6, in this preferred embodiment, the lock 30 is a combination lock and includes at least one dial 31. When the lock 30 is in the unlocked state, the engaging member 20 can move or rotate toward the at least one dial 31 to allow the plug 40 to disengage from the insertion hole 11. Specifically, as shown in Figures 4 and 6, the engaging member 20 includes at least one engaging member unlocking part 21, and the dial 31 is provided with a dial unlocking part 32. When the lock 30 is in the unlocked state, that is, when the user turns the dial 31 to the correct combination, the engaging member unlocking part 21 corresponds to the dial unlocking part 32 of the dial 31, allowing the engaging member 20 to move or rotate toward the dial 31.

[0061] In this preferred embodiment, there are two locking parts 21, each forming a protrusion. There are also two character wheels 31, which are spaced apart on the base 10. The character wheel unlocking part 32 is a recess that cooperates with the locking parts 21.

[0062] When the user rotates the dial 31 and enters the correct password into the lock 30, as shown in Figures 4 and 6, the dial unlocking part 32 corresponding to the dial 31 rotates to the position corresponding to the locking part unlocking part 21. In this way, when the user inserts or removes the plug 40, it drives the locking part 20 to move or rotate toward the dial 31 of the lock 30, so that the locking part unlocking part 21 can engage with the matching dial unlocking part 32, thereby allowing the locking part 20 to exit the insertion hole 11.

[0063] On the other hand, when the lock 30 is entered with an incorrect password, as shown in Figure 8, the password for all the dials 31 may be incorrect, or the password for some of the dials 31 may be incorrect. At least one of the locking parts 21 of the locking member 20 cannot engage with the corresponding dial unlocking part 32. The locking member 20 is then restricted by the lock 30 and cannot move or rotate to exit the insertion hole 11. Furthermore, since the plug 40 is locked in the insertion hole 11 by the locking member 20, the user cannot insert the plug 40 into the insertion hole 11 from the outside or pull it out of the insertion hole 11.

[0064] Please refer to Figures 4 and 6. The base 10 is provided with a limiting structure 12, and the engaging member 20 is provided with a guide structure 22. The guide structure 22 abuts against the limiting structure 12, allowing the engaging member 20 to move relative to the base 10. In this preferred embodiment, the limiting structure 12 is arc-shaped around the insertion hole 11, and the guide structure 22 is forked, abutting against both sides of the limiting structure 12, thus restricting the engaging member 20 to only move linearly relative to the base 10. In addition, the arc-shaped limiting structure 12 surrounding the insertion hole 11 can also assist in guiding the plug 40, making the insertion and removal of the plug 40 smoother and preventing it from getting stuck in the base 10.

[0065] In other embodiments, other limiting methods may be adopted so that the locking member 20 can only move or rotate relative to the base 10 in a fixed pattern. For example, the base 10 is provided with a groove, the edge of which matches the locking member 20, so that the locking member 20 can only move or rotate along the groove.

[0066] Furthermore, referring to Figures 3 and 7, the aforementioned insertion hole 11 divides the base 10 into a first housing portion 101, which is away from the operating side 821 of the opening portion 82, and a second housing portion 102, which is close to the operating side 821. The first housing portion 101 is higher than the second housing portion 102 along a height direction H protruding from the body 81. Thus, as shown in Figure 7, when the lock 30 is in the unlocked state, the user can hold the operating side 821 of the opening portion 82 and lift it upwards. The opening portion 82 can then cause the plug 40 to flip outwards and abut against the higher first housing portion 101. This further causes the other side of the plug 40 (such as the second guide structure 42 in this preferred embodiment) to disengage from the insertion hole 11 first, so that the plug 40 can quickly disengage from the insertion hole 11, allowing the user to quickly open the opening portion 82 for convenient use of the bag.

[0067] Preferably, in this preferred embodiment, the lock 30 is connected to the second housing 102, and the engaging member 20 can retract into the second housing 102 to allow the plug 40 to disengage from the insertion hole 11. Thus, when the user lifts the operating side 821 upwards, the other side of the plug 40 (such as the second guide structure 42 in this preferred embodiment) pushes the engaging member 20 toward the lock 30 to move or rotate, so that the engaging member 20 can quickly exit the insertion hole 11, thereby further increasing the speed of releasing the restriction on the plug 40 without being stuck by the engaging member 20.

[0068] Please refer to Figure 9. The difference between the second preferred embodiment and the first preferred embodiment of this utility model is that the second preferred embodiment presents a schematic diagram of the base 10 of the magnetic fastening device having two insertion holes 11 for the two plugs 40 to fasten. The two plugs 40 can come from the same opening part 82 of a bag, such as the handbag shown in Figure 1, whose opening part 82 is combined with a connecting member having an integrally formed structure of two plugs 40. In use, the two plugs 40 are inserted into or disengaged from the two insertion holes 11 approximately simultaneously. Alternatively, the two plugs 40 can also come from different opening parts 82. For example, when the bag is a suitcase, it may have two zipper heads, which are equivalent to two opening parts 82, and the two plugs 40 are formed on the two zipper heads respectively, and can be inserted into or disengaged from the corresponding insertion holes 11 respectively. In addition, the second preferred embodiment also presents a case where the lock 30 includes more pins 31. In order for the engaging member 20 to operate smoothly and not to be misaligned and stuck, the number of elastic elements 201 can also be multiple.

[0069] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model's technical solution. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the content of the present utility model's technical solution shall still fall within the scope of the present utility model's technical solution.

Claims

1. A magnetic fastening device, characterized in that, The magnetic fastening device includes: a base having at least one insertion hole; a locking member movably or rotatably disposed within the base; a lock connecting the base and the locking member, having a locked state and an unlocked state; at least one plug capable of being inserted into the at least one insertion hole; a first element disposed on the base; and at least one second element disposed on the at least one plug, wherein a magnetic attraction between the first element and the at least one second element tends to insert the at least one plug into the at least one insertion hole; when the at least one plug is inserted into the at least one insertion hole and the lock is in the locked state, the lock keeps the locking member engaged with the at least one plug, thereby preventing the at least one plug from disengaging from the at least one insertion hole; when the at least one plug is inserted into the at least one insertion hole and the lock is in the unlocked state, the lock allows the locking member to disengage the at least one plug from the at least one insertion hole.

2. The magnetic fastening device as described in claim 1, characterized in that, The magnetic attraction between the first element and the at least one second element causes the at least one plug to push the engaging member and insert it into the at least one insertion hole.

3. The magnetic fastening device as described in claim 2, characterized in that, When the lock is in the unlocked state, the at least one plug can push the engaging member when it is disengaged from the at least one insertion hole, so that the at least one plug can be disengaged from the at least one insertion hole.

4. The magnetic fastening device as described in claim 3, characterized in that, The at least one plug is provided with a first guide structure and a second guide structure. When the lock is in the unlocked state, the at least one plug pushes the locking member through the first guide structure during the process of inserting into the at least one insertion hole, and pushes the locking member through the second guide structure during the process of disengaging from the at least one insertion hole.

5. The magnetic fastening device as described in claim 3, characterized in that, The base is provided with an elastic element, and when the magnetic attraction causes the at least one plug to push the engaging member, the engaging member can drive the elastic element to elastically deform.

6. The magnetic fastening device as described in claim 1, characterized in that, The lock is a combination lock and includes at least one pin. When the lock is in the unlocked state, the locking member can move or rotate toward the at least one pin to allow the at least one plug to disengage from the at least one insertion hole.

7. The magnetic fastening device as described in claim 6, characterized in that, The locking component includes at least one locking component unlocking part, and the at least one digit wheel is provided with a digit wheel unlocking part. When the lock is in the unlocked state, the at least one locking component unlocking part corresponds to the digit wheel unlocking part of the at least one digit wheel, allowing the locking component to move or rotate toward the at least one digit wheel.

8. The magnetic fastening device as described in any one of claims 1 to 7, characterized in that, The base includes a limiting structure, and the engaging member is provided with a guide structure that abuts against the limiting structure, allowing the engaging member to move relative to the base.

9. The magnetic fastening device as described in claim 8, characterized in that, The limiting structure is arc-shaped around the at least one insertion hole, and the guide structure is forked and abuts against both sides of the limiting structure.

10. A type of bag, characterized in that, The bag includes: a body having a receiving space and an opening communicating with the receiving space; an opening having a connecting side and an operating side on its two sides, wherein the connecting side is connected to the body; and a magnetic fastening device as described in any one of claims 1 to 9, wherein the base is disposed on the body and the at least one plug is disposed on the opening.

11. The bag as described in claim 10, characterized in that, The at least one insertion hole divides the base into a first shell portion away from the operating side and a second shell portion near the operating side, wherein the first shell portion is higher than the second shell portion along a height direction protruding from the body.

12. The bag as described in claim 11, characterized in that, The lock is connected to the second housing, and the engaging member can retract into the second housing to allow the at least one plug to disengage from the at least one insertion hole.