Seat buckle

Abstract

The utility model discloses a seat buckle which comprises a buckle body and at least two inserting blocks, and a fixing cavity is formed in the buckle body. The buckle further comprises an unlocking piece, a locking structure and a magnetic attraction assembly, the unlocking piece is positioned on the buckle body and movably arranged in the fixing cavity in a penetrating mode, and compared with the operation that in the prior art, the inserting block needs to be manually pushed into the fixing cavity and the inserting block can be released only by stably controlling the buckle, the magnetic attraction assembly is driven by magnetic force, and therefore the inserting block can be released. And the insertion block can be automatically and accurately adsorbed into the fixed cavity and is positioned, so that the positioning efficiency is greatly improved, and the insertion block can be effectively prevented from being accidentally brought out by a tightened safety belt. In the inserting block dismounting link, a user only needs to lightly hold the buckle body and press the unlocking piece, magnetic traction can be quickly relieved, and easy piece taking is achieved. The whole operation process has low requirements on the stability of the buckle main body, and the use convenience and reliability are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of seat technology, specifically to a seat buckle. Background Technology

[0002] To ensure children's safety while riding in vehicles and to prevent falls and injuries, a variety of child seats are available on the market. Most existing child seats require buckles to secure the seatbelt, ensuring the child is quickly and firmly restrained within the seat.

[0003] Most current buckles consist of a buckle body and a plug connected to the seat belt. The buckle body has a socket with locking components such as a locking pin inside. The plug is locked by the locking components after being inserted into the socket.

[0004] The above are common methods of using clips, but they still have the following shortcomings:

[0005] The locking and unlocking mechanism suffers from time-consuming operation and inconvenient operation.

[0006] Specifically, during the locking process, the user needs to complete a series of operations: extending the seatbelt, aligning the insert with the buckle's slot and inserting it, and then engaging the locking mechanism inside the slot. However, due to children's movements, the seatbelt may suddenly tighten before the insert is manually pushed to full lock, causing the inserted insert to be accidentally pulled out, forcing the user to repeat the process. This not only prolongs the operation time but also increases the user's workload.

[0007] During the unlocking process, the user needs to maintain stable control of the latch body and unlock the locking components to complete the unlocking action. However, sudden movements by children can easily cause the latch body to shift, causing it to fall out of the user's control range, thus interrupting the unlocking process and making the operation inconvenient.

[0008] Therefore, how to overcome the shortcomings of the existing technology mentioned above has become the subject of this utility model. Utility Model Content

[0009] This utility model provides a seat buckle, which aims to solve the technical problems mentioned in the background art.

[0010] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a seat buckle, comprising a buckle body and at least two inserts, wherein the buckle body has a fixed cavity; it also includes an unlocking component, a locking structure, and a magnetic attraction assembly, wherein the unlocking component is positioned on the buckle body and movably inserted into the fixed cavity, and the locking structure acts on the inserts and the buckle body; in the locked state of the seat buckle, the inserts extend into the fixed cavity, and the inserted end of the inserts engages with the unlocking component through the magnetic attraction assembly, and the inserts and the buckle body are locked by the locking structure, thereby achieving the locking of the inserts and the buckle body; in the unlocked state of the seat buckle, the unlocking component releases the engagement state of the magnetic attraction assembly and the locking state of the locking structure by translation within the fixed cavity, thereby unlocking the inserts and the buckle body.

[0011] The relevant content in the above plan is explained as follows:

[0012] In the above scheme, the insertion end of the plug and the unlocking component are attracted by the magnetic attraction component. Under the magnetic attraction of the magnetic attraction component, the insertion end of the plug will automatically move into the fixed chamber and form a non-contact adsorption state with the side of the unlocking component. The two maintain a relative positioning relationship with a predetermined distance under the constraint of the magnetic field.

[0013] It is important to note that "attracting" does not mean that they are completely glued together. Rather, it is through magnetic attraction that the insertion end of the plug and the unlocking component tend to be glued together. That is, the magnetic force achieves a precise "almost-closed" positioning, which maintains physical isolation while ensuring a reliable functional connection.

[0014] In the above scheme, a limiting hole is provided on the periphery of the buckle body at the position corresponding to the unlocking component. At the same time, an insertion port is provided on the periphery of the buckle body to guide the insertion end of the plug into the fixed cavity. Each insertion end of the plug is respectively set with each insertion port.

[0015] In the above scheme, the preferred number of insertion ports is two, and they are located on both sides of the axis of the limiting hole.

[0016] It should be noted that the two ports are located on both sides of the axis of the limiting hole. There are two common situations: First, the two ports are perpendicular to the axis of the limiting hole and are symmetrically arranged; second, the two ports are perpendicular to the axis of the limiting hole but not symmetrical. In this case, the connection force applied by the buckle body to the plug is unstable, and the buckle body will be pulled to rotate when the seat belt pulls the plug.

[0017] In practical use, the first option is preferred.

[0018] In the above scheme, the unlocking component can reciprocate within the limiting hole, or it can move upwards in one direction before being pulled out.

[0019] In the above scheme, the locking structure can be an external locking component or a spring piece set separately inside the fixed cavity, as long as it satisfies the purpose that the sliding unlocking component can drive the locking component to open, and the non-sliding unlocking component will not open the locking component.

[0020] For example, when a spring is installed inside the fixed chamber, the end of the spring facing the insertion port has a hook. The insertion end of the block can be fitted with a hook groove. Once the insertion end is inserted into the insertion port, the hook can bend elastically and then insert into the hook groove. The sliding block slides down, pushing the spring upward. This upward movement can be achieved by overcoming the force of the torsion spring; that is, the spring is rotated and positioned within the fixed chamber by the torsion spring. Afterward, the spring tilts upward and moves away from the spring slot on the insertion block, achieving automatic unlocking.

[0021] In the above solution, the magnetic attraction component can be used to achieve quick locking and quick separation of the plug. Specifically, when the plug is first inserted, the inserted end of the plug and the unlocking component are attracted by the magnetic attraction component, and the plug and the buckle body are locked by the locking structure, thus achieving a dual locking of magnetic and mechanical properties. Afterwards, if it is necessary to open the plug, the magnetic attraction component and the locking structure are released by the translation of the unlocking component in the fixed chamber.

[0022] In a further technical solution, the magnetic suction assembly includes a first magnetic suction member and a second magnetic suction member, wherein one of the first magnetic suction member and the second magnetic suction member is disposed on the unlocking member, and the other is disposed on the insert block; in the locked state of the seat buckle, the first magnetic suction member and the second magnetic suction member are aligned and attracted; in the unlocked state of the seat buckle, the first magnetic suction member and the second magnetic suction member are misaligned and released from attraction.

[0023] With the above design, the unlocking component can be equipped with either the first magnetic component or the second magnetic component. This means that the positions of the first and second magnetic components are not fixed. As long as the conditions are met, the first and second magnetic components can attract each other under the action of magnetic force, so that the locking and unlocking of the plug can be carried out quickly.

[0024] In a further technical solution, the first magnetic attractor and the second magnetic attractor are two magnetic components with opposite magnetic properties, or one of the first magnetic attractor and the second magnetic attractor is a magnet and the other is a ferromagnetic component.

[0025] Based on the principle that like poles repel and unlike poles attract, the first and second magnetic components are two magnetic components with opposite magnetic properties, which can quickly achieve the purpose of attraction when the first and second magnetic components are aligned. When the first and second magnetic components are misaligned, the magnetic force can be eliminated, making it easy for the two to separate.

[0026] The purpose of including ferromagnetic components is that they can be attracted to the magnet by its magnetic force and move towards it, working on the same principle as two magnetic components with opposite magnetic properties. However, when ferromagnetic components are used, the magnetic force is provided by only one magnet; therefore, in practice, a solution using two magnetic components with opposite magnetic properties is often employed.

[0027] A further technical solution involves fixing the first magnetic suction member at one end of the unlocking member within the fixed cavity, and configuring the unlocking member within the fixed cavity to move linearly along a first direction, which is the length direction of the unlocking member; fixing the second magnetic suction member at the insertion end of the insertion block, and configuring the insertion end of the insertion block within the fixed cavity to move linearly along a second direction, wherein the first direction and the second direction are located in the same plane and perpendicular to each other; in the locked state of the seat buckle, the first magnetic suction member faces the second magnetic suction member to form magnetic attraction positioning; during the unlocking process of the seat buckle, the first magnetic suction member moves along the first direction to cause the first magnetic suction member and the second magnetic suction member to be misaligned in the second direction, thereby releasing the magnetic attraction.

[0028] When in use, the buckle body is located in front of the user's chest, with the first direction being up and down and the second direction being left and right.

[0029] Specifically, the process of achieving magnetic positioning and magnetic attraction using two magnetic components with opposite magnetic properties is as follows:

[0030] If the seat buckle needs to be locked, the insertion end of the guide block enters the fixing chamber. Then, the first magnetic component faces the second magnetic component. In this state, the first magnetic component and the second magnetic component interact to form magnetic positioning. During the unlocking process of the seat buckle, the first magnetic component moves along the first direction to make the first magnetic component and the second magnetic component misaligned in the second direction, thereby releasing the magnetic attraction.

[0031] Under the above design, the first and second magnetic components can quickly engage through magnetic attraction, but they cannot quickly detach the plug. This is because misalignment of the first and second magnetic components in the second direction only releases the magnetic engagement; the plug still needs to be manually removed.

[0032] It is important to note that the locking and unlocking of the locking structure and the formation and unlocking of the magnetic positioning are completed simultaneously. When the magnetic positioning is formed, the locking of the locking structure is also completed, and vice versa.

[0033] In a further technical solution, a third magnetic attractor is fixedly provided on the unlocking component, the third magnetic attractor having opposite magnetic poles to the second magnetic attractor; the unlocking component is configured to move linearly along a first direction within the fixed cavity, the first direction being the length direction of the unlocking component; the first magnetic attractor and the third magnetic attractor are arranged sequentially and at intervals in the first direction; in the unlocked state of the seat buckle, the third magnetic attractor and the second magnetic attractor are aligned in the second direction, thereby magnetically repelling each other and releasing the attraction.

[0034] Since the unlocking piece slides up and down along the first direction, it can be pressed from top to bottom or from bottom to top. However, when pressing from bottom to top, children's legs are likely to hit the unlocking piece. To solve this problem, pressing from top to bottom is often chosen.

[0035] To further meet the requirements of rapid locking and unlocking operations.

[0036] Specifically, under normal circumstances, the first magnetic clasp aligns with the socket. Then, once the insertion end of the plug enters the socket, the ends of the first and second magnetic clasps are magnetically aligned, causing the magnetic poles of the first magnetic clasp to attract the insertion end of the plug into the fixed cavity and achieve positioning through the magnetic force of opposite poles attracting each other. If unlocking is required, the unlocking piece is pressed downward along the first direction. Then, the first and third magnetic clasps descend simultaneously until the third magnetic clasp reaches the original position of the first magnetic clasp. At this time, the ends of the third and second magnetic clasps are magnetically repelled. Due to the principle of like poles repelling each other, the insertion end of the plug is pushed away by the pushing force applied by the third magnetic clasp to the end of the second magnetic clasp.

[0037] In the above design, the first magnetic attractor and the second magnetic attractor can quickly attract each other through magnetic attraction. At the same time, the first magnetic attractor and the third magnetic attractor can also quickly detach the plug through magnetic force.

[0038] It should be noted that the alignment of the first magnetic component and the second magnetic component can be partial or completely aligned, but the magnetic force is greater when they are completely aligned, so it is preferred to align them.

[0039] A further technical solution is provided in which an elongated groove is provided on the unlocking component along the axis of the limiting hole, and an elastic component is fixedly installed in the elongated groove, the elastic component being arranged along the axis of the limiting hole; the inner sidewall of the fixed chamber is provided with a guide block inserted into the elongated groove, and the free end of the elastic component is positioned and connected to the guide block.

[0040] With the above design, the unlocking component can reciprocate up and down in the first direction. That is, in the initial state, the elastic element (spring) applies a thrust to the unlocking component, so that the exposed end of the unlocking component is always outside the limiting hole. Once the exposed end of the unlocking component is pressed down, the spring limited by the guide block will be compressed, thereby storing force to facilitate the automatic reset of the limiting post.

[0041] In a further technical solution, the seat buckle also includes a locking block, which is floatingly disposed in the fixed cavity along the thickness direction of the buckle body; the locking block is in transmission cooperation with the unlocking component, the latter driving the former to move downward along the thickness direction; a reset component is also provided in the fixed cavity, which keeps the locking block in an upward floating motion tendency; the surface of the unlocking component opposite to the locking block is provided with a pressing structure that can make the locking block move downward.

[0042] It should be noted that when the buckle body is located in front of the user's chest, the thickness direction is the front-to-back direction of the user's chest.

[0043] With the above design, automatic locking and quick-touch locking operations can be quickly achieved.

[0044] A further technical solution is provided, wherein the locking structure includes a protrusion and a recess that interlock with each other; one of the protrusion and the recess is disposed on the locking block, and the other is disposed on the insertion end of the insert block; in the locked state of the seat buckle, the protrusion faces the recess and inserts into the recess to complete the mechanical locking; during the unlocking process of the seat buckle, the locking block is driven to move downward over the resistance of the reset member, and the protrusion disengages from the insertion of the recess in the thickness direction of the buckle body.

[0045] A further technical solution is provided with a limiting hook on the side of the locking block, and the hook tongue of the limiting hook protrudes towards the unlocking component; the hook tongue of the limiting hook is the protruding part; the surface of the insertion end of the insertion block opposite to the limiting hook is provided with a locking hook groove; the locking hook groove is a recessed part.

[0046] If the protrusion is located at the insertion end of the insert, it is prone to damage from bumps and knocks. Therefore, a recess is chosen to be provided at the insertion end of the insert.

[0047] Specifically, when the insert end enters the fixed chamber through the insertion port, the end of the insert end will push the hook tongue of the limiting hook down and compress the reset component. With the attraction of the magnetic force, the recessed part moves with the insert end to face the protrusion. At this time, the hook tongue of the limiting hook is no longer pushed by the insert end. The reset component (spring) resets and guides the hook tongue to insert into the locking hook groove, thereby locking the insert end.

[0048] Once unlocking is required, the unlocking component is pressed down. The unlocking component then guides the end of the third magnetic component to form a magnetic repulsion alignment with the end of the second magnetic component. At the same time, the unlocking component pushes the locking block back along the thickness direction. At this time, the reset component is compressed, and the protrusion disengages from the insertion of the recess in the thickness direction of the buckle body.

[0049] It should be noted that the contact surfaces between the locking block and the unlocking component can be fitted with a push block and a push groove with a triangular cross-section. The inclined surface of the push block slides on the inclined surface of the push groove to push the locking block. However, this method is prone to the push block getting stuck at the edge of the push groove during operation.

[0050] A further technical solution includes a pressing structure comprising a pressing protrusion and a pressing portion that abut against each other; one of the pressing protrusion and the pressing portion is disposed on the locking block, and the other is disposed on the unlocking member, and one of them is provided with a guide surface; the unlocking member is configured to move linearly along a first direction in the fixed cavity, the first direction being the length direction of the unlocking member; during the unlocking process of the seat buckle, the pressing protrusion and the pressing portion are pressed against each other in the first direction by driving the unlocking member, and the locking block is moved downward against the resistance of the reset member by the action of the guide surface.

[0051] The pressure-bearing part is the lower end face of the unlocking component, and the pressure-bearing protrusion is set on the locking block.

[0052] Specifically, when the sliding block slides down to the end face and slides along the arc-shaped guide surface, since the height of the guide surface increases from the direction close to the limit hole to the direction away from the limit hole, as the sliding block gradually slides down, the locking block will also gradually retract along the thickness direction, causing the hook tongue to disengage from the locking hook groove and simultaneously press the reset part.

[0053] A further technical solution involves a guide post passing through the locking block, with its end positioned and connected to the inner wall of the fixed cavity. The guide post is located on the side of the locking block facing the reset component. This design enhances the stability of the locking block as it retracts along its thickness. A further technical solution involves each insert's extended end being positioned and connected to the buckle body, and the free end of each insert being positioned and connected to the seatbelt mounted on the seat, thus collectively forming a restraint mechanism that secures the user to the seat.

[0054] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0055] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0056] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0057] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the case.

[0058] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0059] The working principle and advantages of this utility model are as follows:

[0060] This utility model can achieve quick locking and quick separation of the plug by means of a magnetic suction component. Specifically, when the plug is first inserted, the inserted end of the plug and the unlocking component are attracted by the magnetic suction component, and the plug and the buckle body are locked by the locking structure. Afterwards, if it is necessary to open the plug, the magnetic suction component and the locking structure are released by the translation of the unlocking component in the fixed chamber.

[0061] Unlike existing technologies where children's movements can cause the seatbelt to suddenly tighten before the insert is manually pushed to full lock, leading to the insert being accidentally pulled out, this application's first magnetic attractor automatically pulls the second magnetic attractor via magnetic force. This allows the insert to quickly enter the fixed chamber upon insertion, enabling it to be positioned within a short time and significantly reducing locking time. This design eliminates the need for manual pushing in traditional structures, preventing the seatbelt from suddenly tightening and causing the insert to accidentally dislodge, while also enabling one-handed locking operation.

[0062] During the unlocking process, the user only needs to press the unlock button with a single finger to instantly release the magnetic fixation and simultaneously release the locking mechanism. This innovative structure completely eliminates the cumbersome operation of traditional designs that require stabilizing the buckle before unlocking. Even when the vehicle is bumpy or a child accidentally touches it, it can still ensure accurate execution of the unlocking action, combining ease of operation and safety.

[0063] In summary, unlike existing technologies that require manual pushing of the insert into the fixed chamber and stable control of the latch to release the insert, this invention uses magnetic drive to automatically and accurately attract and position the insert into the fixed chamber. This significantly improves positioning efficiency and effectively prevents the insert from being accidentally pulled out by the taut seatbelt. During insert removal, the user simply needs to lightly grasp the latch body and press the unlocking mechanism to quickly release the magnetic pull and easily remove the insert. The entire operation requires minimal stability from the latch body, greatly enhancing ease of use and reliability. Attached Figure Description

[0064] Figure 1 This is a schematic diagram of the main structure of the buckle body in an embodiment of the present utility model;

[0065] Appendix Figure 2 This is a perspective view of the buckle body in an embodiment of the present utility model;

[0066] Appendix Figure 3 This is a schematic diagram of the structure when the insertion end of the insert block is inserted into the fixed cavity in an embodiment of this utility model;

[0067] Appendix Figure 4 This is a schematic diagram of the structure when the insertion end of the insert block is about to detach from the fixed chamber in an embodiment of this utility model;

[0068] Appendix Figure 5 This is a schematic diagram of the card slot block structure in an embodiment of the present utility model;

[0069] Appendix Figure 6 This is a schematic diagram of the structure when the insertion end of the insert block is disengaged from the buckle body in an embodiment of this utility model;

[0070] Appendix Figure 7 This is a schematic diagram showing the magnetic attraction between the first magnetic attractor and the second magnetic attractor within the fixed cavity in an embodiment of this utility model.

[0071] Appendix Figure 8 This is a schematic diagram showing the magnetic repulsion state between the first magnetic attractor and the second magnetic attractor within the fixed cavity in an embodiment of this utility model.

[0072] Appendix Figure 9 This is a schematic diagram of the longitudinal section of the insert block in an embodiment of the present invention when the insert end is detached from the fixed chamber;

[0073] Appendix Figure 10 This is a perspective view of the present invention when cut along the axis of the unlocking component in an embodiment;

[0074] Appendix Figure 11 This is a schematic diagram of the main view structure when cut along the axis of the unlocking component in an embodiment of this utility model;

[0075] Appendix Figure 12 This is a schematic diagram of the unlocking component structure in an embodiment of the present utility model;

[0076] Appendix Figure 13 This is a schematic diagram of the pressing structure in an embodiment of the present utility model;

[0077] Appendix Figure 14 This is a schematic diagram of the structure when the protrusion and the recess are mechanically locked in an embodiment of the present utility model.

[0078] Appendix Figure 15 This is a schematic diagram of the structure when the protrusion and the recess are about to separate in an embodiment of the present utility model.

[0079] Appendix Figure 16 This is a schematic diagram of the structure when the protrusion and the recess are completely separated in an embodiment of the present utility model.

[0080] Appendix Figure 17 This is a schematic diagram of the structure when the buckle body is connected to the insert block for connecting the safety belt in an embodiment of this utility model.

[0081] In the above attached diagrams: 1. Buckle body; 2. Insertion block; 3. Fixing chamber; 4. Limiting hole; 5. Insertion port; 6. Unlocking component; 7. Magnetic suction assembly; 8. First magnetic suction component; 9. Third magnetic suction component; 10. Second magnetic suction component; 11. Long groove; 12. Elastic component; 13. Guide block; 14. Locking block; 15. Protrusion; 16. Recess; 17. Limiting hook; 18. Pressure-bearing protrusion; 19. Guide surface; 20. Safety belt; 21. Insertion end; 22. Reset component; 23. Guide post; 24. Locking structure; 25. Pressing structure;

[0082] L1, first direction; L2, second direction. Detailed Implementation

[0083] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0084] Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.

[0085] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.

[0086] See appendix Figures 1-17As shown, a seat buckle includes a buckle body 1 and at least two inserts 2. The buckle body 1 has a fixed chamber 3. It also includes an unlocking member 6, a locking structure 24, and a magnetic attraction assembly 7. The unlocking member 6 is positioned on the buckle body 1 and movably passes through the fixed chamber 3. The locking structure 24 acts on the inserts 2 and the buckle body 1. In the locked state of the seat buckle, the inserts 2 extend into the fixed chamber 3, and the extended end 21 of the inserts 2 is attracted to the unlocking member 6 through the magnetic attraction assembly 7. The inserts 2 and the buckle body 1 are locked by the locking structure 24, thus achieving the locking of the inserts 2 and the buckle body 1. In the unlocked state of the seat buckle, the unlocking member 6 releases the attraction of the magnetic attraction assembly 7 and the locking state of the locking structure 24 by translation in the fixed chamber 3, thus unlocking the inserts 2 and the buckle body 1.

[0087] In this embodiment, the insertion end 21 of the plug 2 and the unlocking member 6 are attracted by the magnetic attraction component 7. Under the magnetic attraction of the magnetic attraction component 7, the insertion end 21 of the plug 2 will automatically move into the fixed chamber 3 and form a non-contact adsorption state with the side of the unlocking member 6. The two maintain a relative positioning relationship with a predetermined distance under the constraint of the magnetic field.

[0088] It should be noted that "attracting" does not mean that they are completely glued together. Rather, it is through magnetic attraction that the insertion end 21 of the plug 2 and the unlocking part 6 tend to be glued together. That is, the magnetic force achieves a precise positioning of "almost but not quite" which maintains physical isolation while ensuring a reliable functional connection.

[0089] In this embodiment, a limiting hole 4 is provided on the periphery of the buckle body 1 at the position corresponding to the unlocking member 6. At the same time, an insertion port 5 is provided on the periphery of the buckle body 1 to guide the insertion end 21 of the plug 2 into the fixed chamber 3. Each insertion end 21 of the plug 2 is respectively provided with each insertion port 5.

[0090] In this embodiment, there are preferably two insertion ports 5, which are located on both sides of the axis of the limiting hole 4.

[0091] It should be noted that the two insertion ports 5 are located on both sides of the axis of the limiting hole 4. There are two common situations: First, the two insertion ports 5 are perpendicular to and symmetrically arranged with the axis of the limiting hole 4; Second, the two insertion ports 5 are perpendicular to but not symmetrical with the axis of the limiting hole 4. In this case, the connecting force applied by the buckle body 1 to the insertion block 2 is unstable, and the buckle body 1 will be pulled to rotate when the safety belt 20 pulls the insertion block 2.

[0092] In practical use, the first option is preferred.

[0093] In this embodiment, the unlocking component 6 can reciprocate within the limiting hole 4, or it can move upwards in one direction before being pulled out.

[0094] In this embodiment, the locking structure 24 can be an external locking component or a spring piece separately installed inside the fixed chamber 3, as long as it satisfies the purpose that the sliding unlocking component 6 can drive the locking component to open, and the non-sliding unlocking component 6 will not open the locking component.

[0095] For example, when a spring is provided inside the fixed chamber 3, the end of the spring facing the insertion port 5 has a hook. The insertion end 21 of the insertion block 2 can be fitted with a hook groove. Once the insertion end 21 is inserted into the insertion port 5, the hook can bend elastically and then insert into the hook groove. The sliding block slides down and pushes the spring to lift up. The lifting can be achieved by overcoming the force of the torsion spring. That is, the spring is rotated and set in the fixed chamber 3 by the torsion spring. Afterwards, the spring lifts up and moves away from the spring slot on the insertion block 2 to achieve automatic unlocking.

[0096] In this embodiment, the magnetic attraction component 7 can be used to achieve quick locking and quick separation of the plug 2. Specifically, when the plug 2 is first inserted, the insertion end 21 of the plug 2 and the unlocking member 6 are attracted by the magnetic attraction component 7, and the plug 2 and the buckle body 1 are locked by the locking structure 24, thereby achieving a dual locking of magnetic and mechanical properties. Afterwards, if it is necessary to open the plug 2, the magnetic attraction component 7 and the locking structure 24 can be released by the translation of the unlocking member 6 in the fixed chamber 3.

[0097] like Figures 3-5 as well as Figure 7 and Figure 8 As shown, preferably, the magnetic suction assembly 7 includes a first magnetic suction member 8 and a second magnetic suction member 10, and one of the first magnetic suction member 8 and the second magnetic suction member 10 is disposed on the unlocking member 6, and the other is disposed on the insert block 2; in the locked state of the seat buckle, the first magnetic suction member 8 and the second magnetic suction member 10 are aligned and attracted; in the unlocked state of the seat buckle, the first magnetic suction member 8 and the second magnetic suction member 10 are misaligned and released from attraction.

[0098] With the above design, the unlocking component 6 can be equipped with either the first magnetic component 8 or the second magnetic component 10. This means that the positions of the first magnetic component 8 and the second magnetic component 10 are not fixed. As long as the first magnetic component 8 and the second magnetic component 10 can attract each other under the action of magnetic force, the locking and unlocking of the plug 2 can be carried out quickly.

[0099] Preferably, the first magnetic attractor 8 and the second magnetic attractor 10 are two magnetic components with opposite magnetic properties, or one of the first magnetic attractor 8 and the second magnetic attractor 10 is a magnet and the other is a ferromagnetic component.

[0100] Based on the principle that like poles repel and unlike poles attract, the first magnetic chuck 8 and the second magnetic chuck 10 are two magnetic components with opposite magnetic properties, which can quickly achieve the purpose of attraction when the first magnetic chuck 8 and the second magnetic chuck 10 are aligned. When the first magnetic chuck 8 and the second magnetic chuck 10 are misaligned, the magnetic force can be eliminated, making it easy for the two to separate.

[0101] The purpose of including ferromagnetic components is that they can be attracted to a magnet by its magnetic force and move towards it; their working principle is the same as that of two magnetic components with opposite magnetic properties. However, when ferromagnetic components are used, the magnetic force is provided by only one magnet. Therefore, in practice, a solution using two magnetic components with opposite magnetic properties is often employed.

[0102] like Figures 3-5 as well as Figure 7 and Figure 8 As shown, preferably, the first magnetic suction member 8 is fixedly disposed at one end of the unlocking member 6 located in the fixed chamber 3, and the unlocking member 6 is configured to move linearly along the first direction L1 in the fixed chamber 3, the first direction L1 being the length direction of the unlocking member 6; the second magnetic suction member 10 is fixedly disposed at the insertion end 21 of the insertion block 2, and the insertion end 21 of the insertion block 2 is configured to move linearly along the second direction L2 in the fixed chamber 3, the first direction L1 and the second direction L2 being disposed in the same plane and perpendicular to each other; in the locked state of the seat buckle, the first magnetic suction member 8 is directly opposite the second magnetic suction member 10 to form magnetic attraction positioning; during the unlocking process of the seat buckle, the first magnetic suction member 8 moves along the first direction L1, so that the first magnetic suction member 8 and the second magnetic suction member 10 are misaligned in the second direction L2, thereby releasing the magnetic attraction.

[0103] When in use, the buckle body 1 is located in front of the user's chest, with the first direction L1 being the up-down direction and the second direction L2 being the left-right direction.

[0104] Specifically, the process of achieving magnetic positioning and magnetic attraction using two magnetic components with opposite magnetic properties is as follows:

[0105] If the seat buckle needs to be locked, the insertion end 21 of the guide block 2 enters the fixing chamber 3. Then, the first magnetic member 8 is facing the second magnetic member 10. In this state, the first magnetic member 8 and the second magnetic member 10 interact to form magnetic positioning. During the unlocking process of the seat buckle, the first magnetic member 8 moves along the first direction L1 so that the first magnetic member 8 and the second magnetic member 10 are misaligned in the second direction L2, thereby releasing the magnetic attraction.

[0106] Under the above design, the first magnetic attractor 8 and the second magnetic attractor 10 can quickly engage through magnetic attraction, but they cannot quickly disengage the plug 2. This is because the misalignment of the first magnetic attractor 8 and the second magnetic attractor 10 in the second direction L2 only releases the magnetic engagement; the plug 2 still needs to be manually removed.

[0107] It should be noted that the locking and unlocking of the locking structure 24 and the formation and unlocking of the magnetic positioning are completed simultaneously. When the magnetic positioning is formed, the locking of the locking structure 24 is also completed, and vice versa.

[0108] like Figure 7 and Figure 8 As shown, preferably, a third magnetic attractor 9 is also fixedly provided on the unlocking member 6, the third magnetic attractor 9 having opposite magnetic poles to the second magnetic attractor 10; the unlocking member 6 is configured to move linearly along a first direction L1 within the fixed chamber 3, the first direction L1 being the length direction of the unlocking member 6; the first magnetic attractor 8 and the third magnetic attractor 9 are arranged sequentially and at intervals along the first direction L1; in the unlocked state of the seat buckle, the third magnetic attractor 9 and the second magnetic attractor 10 are aligned along the second direction L2, thereby magnetically repelling each other and releasing the attraction.

[0109] Since the unlocking piece 6 slides up and down along the first direction L1, it can be pressed from top to bottom or from bottom to top. However, when pressing from bottom to top, children's legs are likely to hit the unlocking piece 6. To solve this problem, pressing from top to bottom is often chosen.

[0110] To further meet the requirements of rapid locking and unlocking operations.

[0111] Specifically, under normal circumstances, the first magnetic chuck 8 will align with the socket 5. Subsequently, once the insertion end 21 of the plug 2 enters the socket 5, the end of the first magnetic chuck 8 and the end of the second magnetic chuck 10 form a magnetic alignment, so that the magnetic poles of the first magnetic chuck 8 will attract the insertion end 21 of the plug 2 into the fixed chamber 3 and achieve positioning through the magnetic force of opposite poles attracting each other. Once unlocking is required, the unlocking piece 6 is pressed downward along the first direction L1. After that, the first magnetic chuck 8 and the third magnetic chuck 9 descend simultaneously until the third magnetic chuck 9 reaches the original position of the first magnetic chuck 8. At this time, the end of the third magnetic chuck 9 and the end of the second magnetic chuck 10 form a magnetic repulsion alignment. Due to the principle of like poles repulsion, the insertion end 21 of the plug 2 will be pushed away by the pushing force applied by the third magnetic chuck 9 to the end of the second magnetic chuck 10.

[0112] In the above design, the first magnetic chuck 8 and the second magnetic chuck 10 can be quickly attracted by magnetic force. At the same time, the first magnetic chuck 8 and the third magnetic chuck 9 can also quickly detach the plug 2 through magnetic force.

[0113] It should be noted that the alignment of the first magnetic member 8 and the second magnetic member 10 can be partial or completely aligned, but the magnetic force is greater when they are completely aligned, so it is preferred to align them.

[0114] like Figures 3-13 As shown, preferably, the unlocking member 6 is provided with an elongated groove 11 along the axial direction of the limiting hole 4, and an elastic member 12 is fixedly installed in the elongated groove 11. The elastic member 12 is arranged along the axial direction of the limiting hole 4. The inner sidewall of the fixed chamber 3 is provided with a guide block 13 inserted into the elongated groove 11, and the free end of the elastic member 12 is positioned and connected to the guide block 13.

[0115] With the above design, the unlocking component 6 can reciprocate up and down in the first direction L1. That is, in the initial state, the elastic component 12 (spring) applies a thrust to the unlocking component 6, so that the exposed end of the unlocking component 6 is always outside the limiting hole 4. Once the exposed end of the unlocking component 6 is pressed down, the spring limited by the guide block 13 will be compressed, thereby storing force to facilitate the automatic reset of the limiting post.

[0116] like Figure 5 as well as Figures 10-16 As shown, preferably, the seat buckle further includes a locking block 14, which is floatingly disposed in the fixed chamber 3 along the thickness direction of the buckle body 1; the locking block 14 is in transmission cooperation with the unlocking member 6, the latter driving the former to move downward along the thickness direction; a reset member 22 is also provided in the fixed chamber 3, which keeps the locking block 14 in an upward floating motion tendency; the surface of the unlocking member 6 opposite to the locking block 14 is provided with a pressing structure 25 that enables the locking block 14 to move downward.

[0117] It should be noted that when the buckle body 1 is located in front of the user's chest, the thickness direction is the front-back direction of the user's chest.

[0118] With the above design, automatic locking and quick-touch locking operations can be quickly achieved.

[0119] Figures 10-16 As shown, preferably, the locking structure 24 includes a protrusion 15 and a recess 16 that interlock with each other; one of the protrusion 15 and the recess 16 is disposed on the locking block 14, and the other is disposed on the insertion end 21 of the insert block 2; in the locked state of the seat buckle, the protrusion 15 faces the recess 16 and is inserted into the recess 16 to complete the mechanical locking; during the unlocking process of the seat buckle, the locking block 14 is driven to move downward against the resistance of the reset member 22, and the protrusion 15 disengages from the insertion of the recess 16 in the thickness direction of the buckle body 1.

[0120] Preferably, the side of the locking block 14 is provided with a limiting hook 17, and the hook tongue of the limiting hook 17 protrudes towards the unlocking member 6; the hook tongue of the limiting hook 17 is the protrusion 15; the surface of the insertion end 21 of the insert block 2 opposite to the limiting hook 17 is provided with a locking hook groove; the locking hook groove is a recess 16.

[0121] If the protrusion 15 is located at the insertion end 21 of the insert 2, it is prone to being damaged by bumps. Therefore, a recess 16 is provided at the insertion end 21 of the insert 2.

[0122] Specifically, when the insertion end 21 of the insert 2 enters the fixed chamber 3 through the insertion port 5, the end of the insertion end 21 of the insert 2 will push the hook tongue of the limiting hook 17 down and compress the reset member 22. With the attraction of the magnetic force, the recessed part 16 moves with the insertion end 21 of the insert 2 to face the protrusion 15. At this time, the hook tongue of the limiting hook 17 is no longer pushed by the insertion end 21 of the insert 2. The reset member 22 resets and guides the hook tongue to be inserted into the locking hook groove, thereby locking the insertion end 21 of the insert 2.

[0123] Once unlocking is required, the unlocking member 6 is pressed down. Then, the unlocking member 6 guides the end of the third magnetic member 9 to form a magnetic repulsion alignment with the end of the second magnetic member 10. At the same time, the unlocking member 6 pushes the locking block 14 to retract along the thickness direction. At this time, the reset member 22 is compressed, and the protrusion 15 disengages from the insertion of the recess 16 in the thickness direction of the buckle body 1.

[0124] It should be noted that the contact surfaces between the locking block 14 and the unlocking component 6 can be fitted with a push block and a push groove with a triangular cross-section. The inclined surface of the push block slides on the inclined surface of the push groove to push the locking block 14. However, this method is prone to the phenomenon that the push block gets stuck on the edge of the push groove during operation.

[0125] like Figures 10-13 As shown, preferably, the pressing structure 25 includes a pressing protrusion 18 and a pressing part that abut against each other; one of the pressing protrusion 18 and the pressing part is disposed on the locking block 14, and the other is disposed on the unlocking member 6, and one of them is provided with a guide surface 19; the unlocking member 6 is configured to move linearly along a first direction L1 in the fixed chamber 3, and the first direction L1 is the length direction of the unlocking member 6; during the unlocking process of the seat buckle, the pressing protrusion 18 and the pressing part are pressed against each other in the first direction L1 by driving the unlocking member 6, and the locking block 14 is moved downward against the resistance of the reset member 22 by the action of the guide surface 19.

[0126] The pressure-bearing part is the lower end face of the unlocking part 6, and the pressure-bearing protrusion 18 is set on the locking block 14.

[0127] Specifically, when the sliding block slides down to the end face and slides along the arc-shaped guide surface 19, since the height of the guide surface 19 increases from the direction close to the limiting hole 4 to the direction away from the limiting hole 4, as the sliding block gradually slides down, the locking block 14 will also gradually retract along the thickness direction, so that the hook tongue disengages from the locking hook groove and simultaneously squeezes the reset piece 22.

[0128] Preferably, a guide post 23 is provided on the locking block 14, and the end of the guide post 23 is positioned and connected to the inner wall of the fixing chamber 3. The guide post 23 is located on the side of the locking block 14 facing the reset member 22. With the above design, the stability of the locking block 14 is improved when it retracts along the thickness direction. Preferably, the insertion end 21 of each insert 2 is positioned and connected to the buckle body 1, and the free end of each insert 2 is positioned and connected to the seat belt 20 provided on the seat, thereby jointly forming a restraint mechanism to bind the user to the seat.

[0129] Working principle:

[0130] This latch operates in two ways: locking and unlocking. These are explained below:

[0131] Locking operation: Under normal circumstances, the first magnetic attractor 8 will be aligned with the socket 5. Then, once the insertion end 21 of the plug 2 enters the socket 5, the end of the first magnetic attractor 8 and the end of the second magnetic attractor 10 will form a magnetic alignment, so that the magnetic poles of the first magnetic attractor 8 will be attracted into the fixed chamber 3 by the magnetic force of opposite poles attracting each other. When the insertion end 21 of the insert 2 enters the fixed chamber 3 through the insertion port 5, the end of the insertion end 21 of the insert 2 pushes the hook tongue of the limiting hook 17 to move along the thickness direction of the buckle body 1 (when the buckle body 1 is in front of the user's chest, it moves along the back, i.e., the chest direction), and compresses the reset member 22. With the attraction of the magnetic force, the recessed part 16 moves with the insertion end 21 of the insert 2 to face the protrusion 15. At this time, the hook tongue of the limiting hook 17 is no longer pushed by the insertion end 21 of the insert 2. The reset member 22 resets and guides the hook tongue to be inserted into the locking hook groove, thereby locking the insertion end 21 of the insert 2.

[0132] Unlocking operation: Once unlocking is required, press the unlocking component 6 downward along the first direction L1. Then, the first magnetic component 8 and the third magnetic component 9 descend simultaneously until the third magnetic component 9 reaches the original position of the first magnetic component 8. At this time, the end of the third magnetic component 9 and the end of the second magnetic component 10 form a magnetic repulsion alignment. At the same time, the unlocking component 6 will push the locking block 14 to retract along the thickness direction of the locking body, i.e., retract backward, so that the reset component 22, i.e., the spring, is compressed and the hook tongue will disengage from the locking hook groove. Due to the principle of like poles repulsion, the insertion end 21 of the insert 2 will be pushed away by the pushing force applied to the end of the second magnetic component 10 by the push block.

[0133] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A seat buckle, comprising a buckle body (1) and at least two inserts (2), characterized in that: The buckle body (1) has a fixed chamber (3); It also includes an unlocking component (6), a locking structure (24), and a magnetic suction assembly (7). The unlocking component (6) is positioned on the buckle body (1) and is movably inserted into the fixed chamber (3). The locking structure (24) acts on the insert (2) and the buckle body (1). When the seat buckle is locked, the insert (2) extends into the fixed chamber (3), the insert end (21) of the insert (2) and the unlocking member (6) are attracted by the magnetic suction assembly (7), and the insert (2) and the buckle body (1) are locked by the locking structure (24), thereby achieving the locking of the insert (2) and the buckle body (1); When the seat buckle is unlocked, the unlocking member (6) releases the magnetic attraction assembly (7) and the locking structure (24) by translating in the fixed chamber (3), thereby unlocking the insert (2) from the buckle body (1).

2. The seat buckle according to claim 1, characterized in that: The magnetic component (7) includes a first magnetic component (8) and a second magnetic component (10), wherein one of the first magnetic component (8) and the second magnetic component (10) is disposed on the unlocking component (6), and the other is disposed on the insert (2); When the seat buckle is locked, the first magnetic member (8) and the second magnetic member (10) are aligned and attracted together; When the seat buckle is unlocked, the first magnetic component (8) and the second magnetic component (10) are misaligned and released from attraction.

3. The seat buckle according to claim 2, characterized in that: The first magnetic attractor (8) and the second magnetic attractor (10) are two magnetic components with opposite magnetic properties, or one of the first magnetic attractor (8) and the second magnetic attractor (10) is a magnet and the other is a ferromagnetic component.

4. The seat buckle according to claim 2, characterized in that: The first magnetic suction member (8) is fixedly installed at one end of the unlocking member (6) located in the fixed chamber (3), and the unlocking member (6) is configured to move linearly along a first direction in the fixed chamber (3), which is the length direction of the unlocking member (6); The insertion end (21) of the insert (2) is fixedly provided with the second magnetic suction member (10), and the insertion end (21) of the insert (2) is configured to move linearly along the second direction in the fixed chamber (3), wherein the first direction and the second direction are arranged in the same plane and perpendicular to each other; When the seat buckle is locked, the first magnetic member (8) is facing the second magnetic member (10) to form a magnetic positioning; During the seat buckle unlocking process, the first magnetic member (8) moves along the first direction so that the first magnetic member (8) and the second magnetic member (10) are misaligned in the second direction, thereby releasing the magnetic attraction.

5. The seat buckle according to claim 2, characterized in that: The unlocking component (6) is also fixedly provided with a third magnetic component (9), which has opposite magnetic poles to the second magnetic component (10); The unlocking member (6) is configured to move linearly along a first direction within the fixed chamber (3), the first direction being the length direction of the unlocking member (6); The first magnetic attractor (8) and the third magnetic attractor (9) are arranged sequentially and at intervals in the first direction; When the seat buckle is unlocked, the third magnetic member (9) and the second magnetic member (10) are aligned in the second direction, thereby magnetically repelling each other and releasing the attraction.

6. The seat buckle according to claim 1, characterized in that: The seat buckle also includes a locking block (14), which is floatingly disposed in the fixed chamber (3) along the thickness direction of the buckle body (1); The locking block (14) is driven to cooperate with the unlocking component (6), the latter driving the former to move downward along the thickness direction; a reset component (22) is also provided in the fixed chamber (3), the reset component (22) keeps the locking block (14) in an upward floating motion tendency; The surface of the unlocking component (6) opposite to the locking block (14) is provided with a pressing structure (25) that allows the locking block (14) to move downward.

7. The seat buckle according to claim 6, characterized in that: The locking structure (24) includes a protrusion (15) and a recess (16) that engage with each other. One of the protrusion (15) and the recess (16) is disposed on the locking block (14), and the other is disposed on the insertion end (21) of the insert (2); With the seat buckle locked, the protrusion (15) faces the recess (16) and is inserted into the recess (16) to complete the mechanical locking. During the unlocking process of the seat buckle, the drive locking block (14) overcomes the resistance of the reset member (22) and moves downward, and the protrusion (15) disengages from the insertion of the recess (16) in the thickness direction of the buckle body (1).

8. The seat buckle according to claim 6, characterized in that: The pressing structure (25) includes a pressing protrusion (18) and a pressing part that abut against each other; One of the pressure-bearing protrusion (18) and the pressure-bearing part is disposed on the locking block (14), and the other is disposed on the unlocking member (6), and one of them is provided with a guide surface (19). The unlocking member (6) is configured to move linearly along a first direction within the fixed chamber (3), the first direction being the length direction of the unlocking member (6); During the unlocking process of the seat buckle, the pressure protrusion (18) and the pressure part are pressed against each other in the first direction by driving the unlocking component (6), and the locking block (14) is moved downward by the action of the guide surface (19) to overcome the resistance of the reset component (22).

9. The seat buckle according to claim 7, characterized in that: The side of the locking block (14) is provided with a limiting hook (17), and the hook tongue of the limiting hook (17) protrudes towards the unlocking member (6); the hook tongue of the limiting hook (17) is the protrusion (15). The insertion end (21) of the insert (2) is provided with a locking hook groove on the surface opposite to the limiting hook (17); the locking hook groove is a recess (16).

10. The seat buckle according to claim 6, characterized in that: The locking block (14) is provided with a guide post (23), the end of the guide post (23) is positioned and connected to the inner wall of the fixed chamber (3), and the guide post (23) is located on the side of the locking block (14) facing the reset member (22).

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