Buckle assembly and seat belt buckle

Abstract

The present disclosure relates to a buckle assembly and a seat belt buckle. The buckle assembly comprises: a buckle comprising a first housing; a load limiting module comprising a second housing; a connecting wire connected between the buckle and the load limiting module, the connecting wire enabling the buckle to be flexibly connected to the load limiting module; and a fixing part sleeved on the outer side of the connecting wire between the buckle and the load limiting module, wherein the fixing part comprises a first end and a second end in the extension direction of the connecting wire, and the first end overlaps with and abuts against the first housing and the second end overlaps with and abuts against the second housing, so as to limit the rotation of the fixing part relative to the buckle and the load limiting module. The fixing part controls the bending position, torsion angle and swing direction of the connecting wire to achieve a high number of fatigue cycles and to further meet the requirements for different angles and positions of the buckle.

Description

Buckle assembly and seat belt buckle Technical Field

[0001] The present invention relates to the technical field of vehicle safety, and in particular to a buckle assembly and a seat belt buckle. Background Art

[0002] Vehicle safety belts, also known as seat belts, are a type of occupant restraint device. They secure occupants to their seats by means of a webbing pulled from a seatbelt retractor. A locking tongue at the free end of the webbing engages a buckle assembly fixed to the seat. In the event of a collision, they secure occupants in their seats and protect them. This prevents secondary collisions with the steering wheel, instrument panel, and other components, or the possibility of occupants being ejected from the vehicle, resulting in death or injury.

[0003] In related technologies, the lock assembly fixed to the seat usually includes a lock and a load limiting module. The load limiting module and the lock are flexibly connected by a connecting wire, that is, the lock can be twisted, bent and swung relative to the load limiting module through the connecting wire.

[0004] However, the flexible connecting wire cannot maintain a fixed torsion angle or bending angle (also known as a swing angle) relative to the load limiting module, nor can the bending position of the connecting wire be controlled. In particular, when the connecting wire between the lock and the load limiting module is short, the shorter connecting wire will have poorer bending fatigue performance and a lower number of bending fractures than the longer connecting wire when the lock is twisted, bent, or swung relative to the load limiting module for a long time. Not only is the flexible connecting wire prone to long-term friction with the load limiting module or the lock, but it is also prone to wear and breakage of the connecting wire.

[0005] Summary of the Invention

[0006] In order to overcome the problems existing in the related art, the present disclosure provides a buckle assembly and a seat belt buckle.

[0007] According to a first aspect of an embodiment of the present disclosure, the present disclosure provides a lock assembly, comprising: a lock, comprising a first shell; a load limiting module, comprising a second shell; a connecting wire, connected between the lock and the load limiting module, the connecting wire flexibly connecting the lock and the load limiting module; and a fixing component, sleeved on the outside of the connecting wire between the lock and the load limiting module, wherein, along the extension direction of the connecting wire, the fixing component comprises a first end and a second end, the first end overlaps and abuts with the first shell, and the second end overlaps and abuts with the second shell, so as to limit the rotation of the fixing component relative to the lock and the load limiting module.

[0008] In some embodiments, the fixing component includes a first guide hole and a second guide hole, and the two free ends of the connecting wire are respectively inserted into the first guide hole and the second guide hole from the first end of the fixing component. The connecting wire forms a U-shaped fixed end at the first end of the fixing component, and the fixed end is fixedly connected to the first shell through a fastener, wherein the first end of the fixing component is provided with a protrusion, which is inserted into the first shell and abuts against the fastener.

[0009] In some embodiments, the protrusion is located between the first guide hole and the second guide hole, and the abutting surface of the protrusion against the fastener is arc-shaped to match the outer wall of the fastener.

[0010] In some embodiments, the second end of the fixing component is provided with an inserting portion, and the inserting portion is inserted into the second shell to isolate the connecting wire and the second shell so that the connecting wire does not abut against the second shell.

[0011] In some embodiments, the fixing component is further provided with a limit baffle, which is located on both sides of the plug-in part. After the plug-in part is inserted into the second shell, the limit baffle abuts against the second shell to limit the position of the fixing component in the extension direction of the connecting wire.

[0012] In some embodiments, the first guide hole and the second guide hole are arranged to cross each other, so that the connecting wires located in the first guide hole and the second guide hole cross and twist.

[0013] In some embodiments, the fixed component is a component made of a hard material or a soft material and has a fixed shape.

[0014] In some embodiments, a first end of the fixing component is wrapped around the outside of the first shell, and a second end of the fixing component is wrapped around the outside of the second shell.

[0015] In some embodiments, the fixing component is made of a soft material, and the soft material is wound around the outer wall of the connecting wire to form the fixing component.

[0016] According to a second aspect of an embodiment of the present disclosure, the present disclosure provides a seat belt buckle, comprising: a locking tongue; and a buckle assembly according to the first aspect, wherein the locking tongue is snapped into the buckle of the buckle assembly to secure the seat belt to the seat.

[0017] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the fixing component of the present disclosure is suitable for use when the length of the connecting wire between the lock and the load limiting module is short, and the fixing component is sleeved on the outside of the connecting wire of the flexible structure. By limiting the torsion angle and swing direction of the connecting wire, the torsion angle and swing direction of the lock relative to the load limiting module are limited to adapt to the user's habitual position when buckling the lock tongue, and also meet the various requirements of different vehicle seats for different angles and positions of the lock, thereby improving the adaptability and reliability of the lock assembly.

[0018] In addition, the fixing component can also control the bending position of the connecting wire to achieve a higher fatigue number. The fixing component can also isolate the connecting wire from the load limiting module and the lock, so that they do not abut each other, thereby avoiding long-term wear of the connecting wire, the lock and the load limiting module, extending the service life of the connecting wire, and further improving the reliability of the lock assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0020] FIG1 is a schematic perspective structural diagram of a lock assembly without a fixing component installed according to a first exemplary embodiment;

[0021] FIG2 is a schematic perspective structural diagram of a lock assembly with a fixing component installed according to a first exemplary embodiment;

[0022] FIG3 is a perspective exploded schematic diagram of the lock assembly shown in FIG2 ;

[0023] FIG4 is a schematic diagram of the fixing component in FIG3 from a first perspective;

[0024] FIG5 is a schematic diagram of the fixing component in FIG3 from a second perspective;

[0025] FIG6 is a cross-sectional view of the fixing member in FIG3;

[0026] FIG7 is a cross-sectional view of the fixing member in FIG3 after being sleeved on the outside of the connecting wire;

[0027] FIG8 is an exploded schematic diagram of the fixing component and the load limiting module;

[0028] FIG9 is a schematic structural diagram of the assembled fixed component and load limiting module in FIG8 ;

[0029] FIG10 is a schematic diagram showing the disassembly of the lock assembly and the fixing component according to the second exemplary embodiment;

[0030] FIG11 is a schematic diagram of the three-dimensional structure of the locking assembly and the fixing component in FIG10 after being assembled. DETAILED DESCRIPTION

[0031] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0032] To solve the above-mentioned technical problems, the present disclosure provides a lock assembly 100. As shown in Figures 1 and 2, the lock assembly 100 includes a lock 10, a load-limiting module 20, and a connecting wire 30 that flexibly connects the lock 10 and the load-limiting module 20. Because the connecting wire 30 is made of a flexible material, such as a steel wire rope, the connecting wire 30 enables a flexible connection between the lock 10 and the load-limiting module 20. As shown in Figures 2 and 3, the lock assembly 100 is further provided with a fixing component 40 between the lock 10 and the load-limiting module 20. The fixing component 40 is sleeved on the outside of the connecting wire 30 exposed to the outside of the lock 10 and the load-limiting module 20.

[0033] As shown in Figures 1 and 3, the lock buckle 10 includes a first housing 11, and the load limiting module 20 includes a second housing 21. Along the extension direction of the connecting wire 30, the fixing component 40 includes a first end 41 and a second end 42. The first end 41 overlaps and abuts the first housing 11, and the second end 42 overlaps and abuts the second housing 21, thereby limiting the rotation of the fixing component 40 relative to the lock buckle 10 and the load limiting module 20.

[0034] Specifically, as shown in Figure 1, the location where the connecting wire 30 is connected to the lock 10 is often located inside the first shell 11. Similarly, the location where the connecting wire 30 is connected to the load limiting module 20 is also often located inside the second shell 21. Therefore, the first shell 11 and the second shell 21 are usually provided with a hole for extending the connecting wire 30 at one end adjacent to the fixing component 40.

[0035] The first end 41 of the fixing member 40 is an end facing the lock buckle 10 , and the second end 42 of the fixing member 40 is an end facing the load limiting module 20 .

[0036] In this embodiment, the first end 41 of the fixing component 40 can abut against the first housing 11. Furthermore, as shown in FIG3 , the first end 41 of the fixing component 40 can also extend into the hole of the first housing 11. Simultaneously, the second end 42 of the fixing component 40 can also extend into the hole of the second housing 21. Therefore, the first end 41 of the fixing component 40 overlaps and abuts against the first housing 11, so that the first end 41 of the fixing component 40 cannot rotate relative to the first housing 11 about the rotation axis. Simultaneously, the second end 42 of the fixing component 40 overlaps and abuts against the second housing 21, so that the second end 42 of the fixing component 40 cannot rotate relative to the second housing 21 about the rotation axis. The direction of the rotation axis is the extension direction of the connecting wire 30.

[0037] In the second embodiment, as shown in Figures 10 and 11, the first end 41 of the fixing component 40 can also be sleeved or wrapped on the outside of the first shell 11, overlapping and abutting the first shell 11, and the second end 42 of the fixing component 40 can also be sleeved or wrapped on the outside of the second shell 21, overlapping and abutting the second shell 21, so that the first end 41 and the second end 42 of the fixing component 40 cannot rotate around the rotation axis relative to the first shell 11 and the second shell 21.

[0038] In addition, when the length of the connecting wire 30 between the lock buckle 10 and the load force limiting module 20 is relatively short, the fixing component 40 is sleeved on the outside of the connecting wire 30. The fixing component 40 can be made of a soft material in one piece. Therefore, when the lock buckle 10 swings relative to the load force limiting module 20, the fixing component 40 can also be bent appropriately, but the bending amplitude of the fixing component 40 is smaller than the bending amplitude of the steel wire rope, which will limit the bending amplitude and swing amplitude of the lock buckle 10 relative to the load force limiting module 20.

[0039] Furthermore, the fixing member 40 can also control the bending position (also known as the bending point) of the connecting wire 30 to achieve a higher fatigue life. For example, the bending position of the connecting wire 30 can be changed by adjusting the thickness or thickness of the outer wall of the fixing member 40, with thinner and thinner positions serving as bending positions. The bending position of the connecting wire 30 can also be changed by adjusting the flexibility of the fixing member 40. For example, the fixing member 40 can be made of two materials with different flexibilities, in which case the position of the softer material can be set as the bending position.

[0040] Furthermore, the number of bending positions can be set based on the length of the connecting wire 30 between the lock buckle 10 and the load force limiting module 20. When the connecting wire 30 between the lock buckle 10 and the load force limiting module 20 is short, one bending position can be set. When the connecting wire 30 between the lock buckle 10 and the load force limiting module 20 is long, two or more bending positions can be set. This is not specifically limited here.

[0041] In the first embodiment, the first end 41 and the second end 42 of the fixing component 40 are respectively inserted into the interior of the first shell 11 and the second shell 21, so that the connecting wire 30 is isolated from the lock 10 and the load limiting module 20 and does not abut against each other, thereby avoiding long-term mutual wear between the connecting wire 30 and the first shell 11 of the lock 10 and the second shell 21 of the load limiting module 20, extending the service life of the connecting wire 30, the first shell 11 and the second shell 21, and further improving the reliability of the lock assembly 100.

[0042] In the first embodiment, as shown in Figures 4 to 7 , the fixing member 40 is a structure having a fixed or specific shape and includes a first guide hole 43 and a second guide hole 44 extending therethrough.

[0043] Typically, the connecting wire 30 connecting the lock buckle 10 and the load limiting module 20 is made of a single steel wire rope. This single steel wire rope connection has only two free ends. These free ends pass through the first end 41 of the fixing member 40, respectively, into the first guide hole 43 and the second guide hole 44, and then exit through the second end 42 of the fixing member 40. Therefore, as shown in Figures 3 and 7 , the connecting wire 30 forms a U-shaped fixed end 31 at the first end 41 of the fixing member 40. This fixed end 31 is fixedly connected to the first housing 11 of the lock buckle 10 via a fastener 12.

[0044] Furthermore, in this embodiment, the first guide holes 43 and the second guide holes 44 are arranged to cross each other, so that the connecting wires 30 located in the first guide holes 43 and the second guide holes 44 cross and twist.

[0045] As shown in FIG3 , the U-shaped fixed end 31 of the connecting wire 30 located at the first end 41 of the fixing member 40 forms a first plane. The two free ends of the connecting wire 30 pass through the first guide hole 43 and the second guide hole 44, respectively, at the second end 42 of the fixing member 40, forming two parallel connecting wires 30. The plane in which the two parallel connecting wires 30 lie is defined as a second plane, which is adjacent to the second housing 21 of the load limiting module 20.

[0046] As can be seen from Figure 3, the connecting wire 30 is twisted after passing through the first guide hole 43 and the second guide hole 44 of the fixing component 40, so that the U-shaped fixed end 31 and the free end of the connection are respectively located in two planes, that is, the first plane and the second plane intersect, thereby changing the swing direction of the lock 10 relative to the load limiting module 20.

[0047] As shown in Figures 6 and 7, since the first guide hole 43 and the second guide hole 44 are two independent guide holes, the extension direction of the connecting wire 30 in the fixing component 40 is also fixed, that is, the intersection angle between the first plane where the U-shaped fixed end 31 of the connecting wire 30 exposed outside the fixing component 40 is located and the second plane where the free end is located is fixed.

[0048] Furthermore, the intersection angle and torsion angle of the first guide hole 43 and the second guide hole 44 of the fixing component 40 determine the intersection angle between the first plane on which the U-shaped fixed end 31 lies and the second plane on which the free end lies, which in turn determines the swinging direction of the lock buckle 10 relative to the load limiting module 20. Therefore, by varying the intersection angle and torsion angle of the first guide hole 43 and the second guide hole 44 to accommodate the user's habitual position when engaging the latch tongue, the various requirements for different angles and positions of the lock buckle 10 on seats of different vehicles are met, thereby improving the adaptability and reliability of the lock buckle assembly 100.

[0049] Furthermore, as shown in Figures 4 to 7 , the first end 41 of the fixing member 40 is provided with a protrusion 411. The protrusion 411 of the fixing member 40 is inserted into the first housing 11 and abuts against the fastener 12 (as shown in Figure 7 ). In this embodiment, as shown in Figure 5 , the protrusion 411 is located between the first guide hole 43 and the second guide hole 44. In other embodiments, the protrusion 411 may be provided on both sides of the first guide hole 43 or the second guide hole 44, or multiple protrusions 411 may be provided, which is not specifically limited here.

[0050] The protrusion 411 can prevent relative rotation between the first shell 11 of the lock 10 and the fixing part 40, and also largely prevent the connecting wire 30 from bending and wearing at the first end 41 of the fixing part 40 and the first shell 11 of the lock 10, thereby extending the service life of the fixing part 40 and the lock 10.

[0051] In the first embodiment, the thickness and width of the protrusion 411 can be smaller than the thickness of the fixing component 40. The protrusion 411 with this structure can prevent the first end 41 of the fixing component 40 from being fully inserted into the first shell 11 of the lock buckle 10, thereby reducing the material cost of the fixing component 40. At the same time, it can also reduce the size of the opening of the first shell 11 of the lock buckle 10 to avoid the opening being too large to reduce the strength of the first shell 11 of the lock buckle 10.

[0052] When the protrusion 411 is inserted into the first shell 11 of the lock 10, as shown in Figure 2 of this embodiment, the first end 41 of the fixing component 40 can abut against the first shell 11, thereby avoiding the connection material from being exposed to the outside as much as possible, so as to prevent external dust, gravel, water and other residues from entering the fixing component 40, the first shell 11 of the lock 10 or the second shell 21 of the load limiting module 20, thereby extending the service life of the entire lock assembly 100.

[0053] Furthermore, the contact surface 412 of the protrusion 411 and the fastener 12 matches the shape of the fastener 12. For example, as shown in FIG7 of this embodiment, the contact surface 412 of the protrusion 411 and the fastener 12 is arc-shaped.

[0054] It should be noted that the arc-shaped abutting surface 412 of the protrusion 411 in this embodiment is merely exemplary and is not intended to limit the scope of protection of the present disclosure. In other embodiments, the abutting surface 412 of the protrusion 411 may have any shape as long as it matches the outer wall of the fastener 12. For example, when the fastener 12 is a hexagonal head bolt, the abutting surface 412 of the protrusion 411 may have a trapezoidal shape.

[0055] In the first embodiment, as shown in FIG8 , the second end 42 of the fixing component 40 is further provided with a plug-in portion 421 , as shown in FIG7 , and correspondingly, the second shell 21 further includes a plug-in hole 22 receiving the plug-in portion 421 , and the plug-in portion 421 is inserted into the second shell 21 , and the plug-in portion 421 and the plug-in hole 22 are clearance-matched, and the two can be fixed according to needs, which is not specifically limited here.

[0056] The plug-in portion 421 is inserted into the second housing 21 of the load force limiting module 20, so that the connecting wire 30 cannot be bent between the fixing component 40 and the second housing 21. The connecting wire 30 and the second housing 21 are also isolated and do not abut against each other, thereby preventing mutual wear between the connecting wire 30 and the second housing 21, thereby extending the service life of the fixing component 40 and the second housing 21 of the load force limiting module 20.

[0057] In some embodiments, as shown in Figures 4, 5, 8 and 9, the fixing component 40 is further provided with a limit baffle 45, which can be located on both sides of the plug-in portion 421. After the plug-in portion 421 is inserted into the plug-in hole 22 of the second shell 21, the limit baffle 45 abuts against the outer wall of the second shell 21 to limit the position of the fixing component 40 in the extension direction of the connecting wire 30, thereby preventing the fixing firmware from excessively moving toward the second shell 21 of the load limiting module 20, thereby exposing the connecting wire 30 of the first end 41 of the fixing component 40 or causing the protrusion 411 of the first end 41 of the fixing component 40 to detach from the first shell 11 of the lock 10.

[0058] As can be seen from the above, the fixing member 40 can be made of a soft material, so that the fixing member 40 can bend to a certain extent as the lock buckle 10 swings. In other embodiments, the fixing member 40 can also be made of a hard material. A fixing member 40 made of a hard material cannot bend. In other words, once the fixing member 40 is placed outside the connecting wire 30, the lock buckle 10 can no longer twist or even swing relative to the load limiting module 20.

[0059] In the second embodiment, as shown in Figures 10 and 11 , the first end 41 and the second end 42 of the fixing member 40 are respectively wrapped around the exterior of the first shell 11 and the second shell 21. In this embodiment, the fixing member 40 is made of a soft material that can be wrapped around the outer wall of the connecting wire 30 to form the fixing member 40. The fixing member 40, formed by wrapping the soft material, can also twist the connecting wire 30 and fix the twisting angle of the connecting wire 30, thereby changing the swing angle of the lock buckle 10 relative to the load limiting module 20.

[0060] Based on the same inventive concept, the present disclosure provides a seat belt buckle 10, including a locking tongue and the above-mentioned buckle assembly 100. The buckle 10 is fixed to the vehicle seat. When the driver or passenger sits down, the locking tongue with the webbing is inserted into the buckle 10 of the buckle assembly 100 to fix the seat belt and the driver or passenger on the seat to the seat.

[0061] The specific manner in which the functions implemented in the seat belt buckle 10 in the above embodiment have been described in detail in the embodiment of the buckle assembly 100, and will not be elaborated on here.

[0062] It is understood that in this disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of related objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0063] It will be further understood that the terms "first," "second," and the like are used to describe various structures, but these structures should not be limited to these terms. These terms are merely used to distinguish structures of the same type from one another and do not indicate a particular order or degree of importance. In fact, the expressions "first," "second," and the like are fully interchangeable. For example, a first structure could also be referred to as a second structure, and similarly, a second structure could also be referred to as a first structure without departing from the scope of this disclosure.

[0064] It can be further understood that the terms "center", "longitudinal", "lateral", "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation.

[0065] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered merely as exemplary, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0066] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. A locking assembly (100), characterized in that: include: A lock buckle (10), comprising a first shell (11); A load limiting module (20) comprises a second housing (21); A connecting wire (30) is connected between the lock buckle (10) and the load force limiting module (20), wherein the connecting wire (30) enables the lock buckle (10) to be flexibly connected to the load force limiting module (20); and A fixing component (40) is sleeved on the outside of the connecting wire (30) between the lock buckle (10) and the load limiting module (20). Wherein, along the extension direction of the connecting wire (30), the fixing component (40) comprises a first end (41) and a second end (42), the first end (41) overlaps and abuts with the first shell (11), and the second end (42) overlaps and abuts with the second shell (21), so as to limit the rotation of the fixing component (40) relative to the lock buckle (10) and the load limiting module (20).

2. The lock assembly (100) according to claim 1, characterized in that: The fixing component (40) comprises a first guide hole (43) and a second guide hole (44) which are connected through each other. The two free ends (32) of the connecting wire (30) are respectively inserted into the first guide hole (43) and the second guide hole (44) from the first end (41) of the fixing component (40), and the connecting wire (30) forms a U-shaped fixed end (31) at the first end (41) of the fixing component (40), and the fixed end (31) is fixedly connected to the first housing (11) via a fastener (12). The first end (41) of the fixing component (40) is provided with a protrusion (411), and the protrusion (411) is inserted into the first shell (11) and abuts against the fastener (12).

3. The lock assembly (100) according to claim 2, characterized in that: The protrusion (411) is located between the first guide hole (43) and the second guide hole (44), and the abutting surface (412) of the protrusion (411) and the fastener (12) is arc-shaped so as to match the outer wall of the fastener (12).

4. The lock assembly (100) according to claim 2, characterized in that: The second end (42) of the fixing component (40) is provided with an inserting portion (421), and the inserting portion (421) is inserted into the second shell (21) to isolate the connecting wire (30) and the second shell (21) so that the connecting wire (30) and the second shell (21) do not abut against each other.

5. The lock assembly (100) according to claim 4, characterized in that: The fixing component (40) is further provided with a limit baffle (45), and the limit baffle (45) is located on both sides of the plug-in portion (421). After the plug-in portion (421) is inserted into the second shell (21), the limit baffle (45) abuts against the second shell (21) to limit the position of the fixing component (40) in the extension direction of the connecting wire (30).

6. The lock assembly (100) according to claim 2, characterized in that: The first guide hole (43) and the second guide hole (44) are arranged crosswise so that the connecting wires (30) located in the first guide hole (43) and the second guide hole (44) are crossed and twisted.

7. The lock assembly (100) according to any one of claims 1 to 6, characterized in that: The fixing component (40) is a component made of hard material or soft material and has a fixed shape.

8. The lock assembly (100) according to claim 1, characterized in that: The first end (41) of the fixing component (40) is wrapped around the outside of the first shell (11), and the second end (42) of the fixing component (40) is wrapped around the outside of the second shell (21).

9. The lock assembly (100) according to claim 8, characterized in that: The fixing component (40) is made of a soft material, and the soft material is wound around the outer wall of the connecting wire (30) to form the fixing component (40).

10. A seat belt buckle (10), characterized in that: include: Lock tongue; as well as According to the buckle assembly (100) according to any one of claims 1 to 9, the locking tongue is snapped into the buckle (10) of the buckle assembly (100) to secure the safety belt to the seat.

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