Lock catch assembly and safety belt lock catch

Abstract

The invention relates to a lock catch assembly and a safety belt lock catch, and the lock catch assembly comprises a lock catch which comprises a first shell; the load force limiting module comprises a second shell; the connecting wire is connected between the lock catch and the load force limiting module, and the connecting wire enables the lock catch to be flexibly connected with the load force limiting module; the fixing part is arranged outside the connecting wire rod between the lock catch and the load force limiting module in a sleeving mode, the fixing part comprises a first end and a second end in the extending direction of the connecting wire rod, the first end and the first shell are overlapped and abut against each other, the second end and the second shell are overlapped and abut against each other, and the first end and the second end are connected with the lock catch. Therefore, the rotation of the fixing part relative to the lock catch and the load force limiting module is limited. The fixing part controls the bending position, the torsion angle and the swing direction of the connecting wire rod so as to achieve the high fatigue frequency, and the requirements for different angles and positions of the lock catch can be met.

Description

Technical Field

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

[0002] The seat belt for a vehicle, also known as a seat belt, is a type of occupant restraint device. The seat belt restrains the occupants sitting on the seat by means of a webbing pulled out from a seat belt retractor, and through the engagement of a tongue at the free end of the webbing with a buckle assembly fixed to the seat. In the event of a vehicle collision or the like, it is used to fix the occupants on the seat to protect them. It avoids secondary collisions between the occupants and the steering wheel, instrument panel, etc. during a collision, or prevents the occupants from being thrown out of the vehicle and causing injuries or deaths during a collision.

[0003] In the related art, the buckle assembly fixed to the seat generally includes a buckle and a load limiter module. The load limiter module is flexibly connected to the buckle through a connecting wire. That is, the buckle can twist, bend, and swing relative to the load limiter module through the connecting wire.

[0004] However, the flexible connecting wire cannot keep the buckle at a fixed torsional angle and bending angle (also known as the swinging angle) relative to the load limiter module, nor can it control the bending position of the connecting wire. Especially when the length of the connecting wire between the buckle and the load limiter module is short, in the case of the buckle twisting, bending, and swinging relative to the load limiter module for a long time, the bending fatigue performance of the short connecting wire is poor, and the number of bending fractures is also lower than that of the long connecting wire. Not only is the flexible connecting wire prone to long-term mutual friction with the load limiter module or the buckle, but it is also prone to wear and breakage of the connecting wire. Summary of the Invention

[0005] To overcome the problems existing in the related art, the present disclosure provides a buckle assembly and a seat belt buckle.

[0006] According to a first aspect of an embodiment of the present disclosure, the present disclosure provides a buckle assembly, including: a buckle including a first housing; a load limiter module including a second housing; a connecting wire connecting between the buckle and the load limiter module, the connecting wire flexibly connecting the buckle and the load limiter module; and a fixing member sleeved outside the connecting wire between the buckle and the load limiter module. Wherein, along the extending direction of the connecting wire, the fixing member includes a first end and a second end. The first end overlaps and abuts against the first housing, and the second end overlaps and abuts against the second housing to limit the rotation of the fixing member relative to the buckle and the load limiter module.

[0007] In some embodiments, the fixing member includes a through first guiding hole and a second guiding hole. Two free ends of the connecting wire are respectively inserted into the first guiding hole and the second guiding hole from a first end of the fixing member. The connecting wire forms a U-shaped fixing end at the first end of the fixing member. The fixing end is fixedly connected to the first housing through a fastener. Wherein, a protrusion is provided at the first end of the fixing member, and the protrusion is inserted into the first housing and abuts against the fastener.

[0008] In some embodiments, the protrusion is located between the first guiding hole and the second guiding hole, and an abutting surface of the protrusion abutting against the fastener is arc-shaped to be adapted to an outer wall of the fastener.

[0009] In some embodiments, a plugging portion is provided at a second end of the fixing member. The plugging portion is inserted into the second housing to isolate the connecting wire from the second housing, so that the connecting wire does not abut against the second housing.

[0010] In some embodiments, the fixing member is further provided with a limiting baffle. The limiting baffle is located on both sides of the plugging portion. After the plugging portion is inserted into the second housing, the limiting baffle abuts against the second housing to limit a position of the fixing member in an extending direction of the connecting wire.

[0011] In some embodiments, the first guiding hole and the second guiding hole are arranged in a crosswise manner, so that the connecting wires located in the first guiding hole and the second guiding hole cross and twist.

[0012] In some embodiments, the fixing member is a member with a fixed shape made of a hard material or a soft material.

[0013] In some embodiments, the first end of the fixing member is wrapped outside the first housing, and the second end of the fixing member is wrapped outside the second housing.

[0014] In some embodiments, the fixing member is made of a soft material, and the soft material is wound around an outer wall of the connecting wire to form the fixing member.

[0015] According to a second aspect of embodiments of the present disclosure, the present disclosure provides a seat belt buckle, including: a tongue; and a buckle assembly according to the first aspect, wherein the tongue is snapped into the buckle of the buckle assembly to fix the seat belt to a seat.

[0016] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects: The fixing component of the present disclosure is applicable to the case where the length of the connecting wire between the buckle and the load limiting force module is short. The fixing component is sleeved outside the flexible connecting wire, and by restricting the torsional angle and swinging direction of the connecting wire, the torsional angle and swinging direction of the buckle relative to the load limiting force module are restricted, so as to adapt to the habitual position of the user when buckling the lock tongue, and also meet the various requirements of different angles and positions of the buckle at the seats of different vehicles, improving the adaptability and reliability of the buckle assembly.

[0017] In addition, the fixing component can also control the bending position of the connecting wire to achieve the purpose of a higher number of fatigue cycles. The fixing component can also isolate the connecting wire from both the load limiting force module and the buckle without contact, thereby avoiding the long-term wear of the connecting wire with the buckle and the load limiting force module, prolonging the service life of the connecting wire, and further improving the reliability of the buckle assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure.

[0019] Figure 1 is a three-dimensional structural schematic diagram of a buckle assembly without a fixing component shown according to the first exemplary embodiment;

[0020] Figure 2 is a three-dimensional structural schematic diagram of a buckle assembly with a fixing component installed shown according to the first exemplary embodiment;

[0021] Figure 3 is according to Figure 2 shown three-dimensional exploded schematic diagram of the buckle assembly;

[0022] Figure 4 is Figure 3 the first perspective schematic diagram of the fixing component in

[0023] Figure 5 is Figure 3 the second perspective schematic diagram of the fixing component in

[0024] Figure 6 is Figure 3 the cross-sectional view of the fixing component in

[0025] Figure 7 is Figure 3 the cross-sectional view after the fixing component in

[0026] Figure 8 is the exploded schematic diagram of the fixing component and the load limiting force module;

[0027] Figure 9 is Figure 8 a schematic structural view of the fixed component and the load limiting force module after assembly;

[0028] Figure 10 is a schematic view of the disassembly of the latch assembly and the fixed component shown according to the second exemplary embodiment;

[0029] Figure 11 is Figure 10 a three-dimensional structural view of the latch assembly and the fixed component after assembly in Detailed Description of the Embodiment

[0030] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0031] To solve the above technical problems, the present disclosure provides a latch assembly 100. As shown in Figure 1 and Figure 2 , the latch assembly 100 includes a latch 10, a load limiting force module 20, and a connecting wire 30 that flexibly connects the latch 10 and the load limiting force module 20. Since 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 latch 10 and the load limiting force module 20. As shown in Figure 2 and Figure 3 , a fixed component 40 is further provided between the latch 10 and the load limiting force module 20 of the latch assembly 100, and the fixed component 40 is sleeved outside the connecting wire 30 exposed outside the latch 10 and outside the load limiting force module 20.

[0032] As shown in Figure 1 and Figure 3 , the latch 10 includes a first housing 11, and the load limiting force module 20 includes a second housing 21. Among them, along the extending direction of the connecting wire 30, the fixed component 40 includes a first end 41 and a second end 42. The first end 41 overlaps and abuts against the first housing 11, and the second end 42 overlaps and abuts against the second housing 21 to limit the rotation of the fixed component 40 relative to the latch 10 and the load limiting force module 20.

[0033] Specifically, as shown in Figure 1As shown, the position where the connecting wire 30 is connected to the buckle 10 is often inside the first housing 11. Similarly, the position where the connecting wire 30 is connected to the load limiting force module 20 is also often inside the second housing 21. Therefore, holes for the connecting wire 30 to extend out are usually provided at one end of the first housing 11 and the second housing 21 adjacent to the fixing member 40.

[0034] The first end 41 of the fixing member 40 is the end facing the buckle 10, and the second end 42 of the fixing member 40 is the end facing the load limiting force module 20.

[0035] In this embodiment, the first end 41 of the fixing member 40 can be in contact with the first housing 11. Further, as Figure 3 shown, the first end 41 of the fixing member 40 can also extend into the hole of the first housing 11. At the same time, the second end 42 of the fixing member 40 can also extend into the hole of the second housing 21. Therefore, the first end 41 of the fixing member 40 overlaps and contacts the first housing 11, making the first end 41 of the fixing member 40 unable to rotate relative to the first housing 11 around the rotation axis. At the same time, the second end 42 of the fixing member 40 overlaps and contacts the second housing 21, making the second end 42 of the fixing member 40 unable to rotate relative to the second housing 21 around the rotation axis. Among them, the direction of the rotation axis is the extension direction of the connecting wire 30.

[0036] In the second embodiment, as Figure 10 and Figure 11 shown, the first end 41 of the fixing member 40 can also be sleeved or wrapped outside the first housing 11 and overlap and contact the first housing 11, and the second end 42 of the fixing member 40 can also be sleeved or wrapped outside the second housing 21 and overlap and contact the second housing 21, making both the first end 41 and the second end 42 of the fixing member 40 unable to rotate relative to the first housing 11 and the second housing 21 around the rotation axis.

[0037] In addition, when the length of the connecting wire 30 between the buckle 10 and the load limiting force module 20 is short, the fixing member 40 is sleeved outside the connecting wire 30, and the fixing member 40 can be integrally made of a soft material. Therefore, when the buckle 10 swings relative to the load limiting force module 20, the fixing member 40 can also be bent appropriately, but the bending amplitude of the fixing member 40 is smaller than that of the steel wire rope, thereby limiting the bending amplitude and swinging amplitude of the buckle 10 relative to the load limiting force module 20.

[0038] In addition, the fixing component 40 can also control the bending position (also called bending point) of the connecting wire 30 to achieve a higher fatigue number. For example, the bending position of the connecting wire 30 can be changed by setting the thickness or thickness of the outer wall of the fixing component 40, and the thinner position and the thinner position can be the bending position. The bending position of the connecting wire 30 can also be changed by setting the flexibility of the fixing component 40. For example, the fixing component 40 can be made of two materials with different flexibility, and the position where the softer material is located can be set as the bending position.

[0039] In addition, the number of bending positions can be set according to 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, the bending position can be set to one, and when the connecting wire 30 between the lock buckle 10 and the load force limiting module 20 is long, the bending position can also be set to two or more, which is not specifically limited here.

[0040] In the first embodiment, the first end 41 and the second end 42 of the fixing component 40 are respectively inserted into the first shell 11 and the second shell 21, so that the connecting wire 30 is isolated from the lock 10 and the load force 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 force 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.

[0041] In the first embodiment, if Figures 4 to 7 As shown, the fixing member 40 is a structure with a fixed or specific shape. The fixing member 40 includes a first guide hole 43 and a second guide hole 44 that pass through.

[0042] Generally, the connecting wire 30 connecting the lock buckle 10 and the load limiting module 20 is made of a steel wire rope, and the connecting material made of a steel wire rope has only two free ends, and the two free ends 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 are passed out from the second end 42 of the fixing component 40. Figure 3 and Figure 7 As shown, 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 shell 11 of the lock buckle 10 through the fastener 12 .

[0043] Furthermore, in the present embodiment, the first guide holes 43 and the second guide holes 44 are arranged crosswise, so that the connecting wires 30 located in the first guide holes 43 and the second guide holes 44 are crossed and twisted.

[0044] likeFigure 3 As shown, the U-shaped fixing end 31 of the connecting wire 30 at the first end 41 of the fixing member 40 can form a first plane. After the two free ends of the connecting wire 30 pass through the first guiding hole 43 and the second guiding hole 44 respectively from the second end 42 of the fixing member 40, two parallel connecting wires 30 are formed. The plane where the two parallel connecting wires 30 are located is defined as the second plane, and the second plane is close to the second housing 21 of the load limiting force module 20.

[0045] As Figure 3 can be seen, after the connecting wire 30 passes through the first guiding hole 43 and the second guiding hole 44 of the fixing member 40, it is twisted, so that the connected U-shaped fixing end 31 and the free end are respectively in two planes, that is, the first plane and the second plane intersect, thereby changing the swinging direction of the latch 10 relative to the load limiting force module 20.

[0046] As Figure 6 and Figure 7 shown, since the first guiding hole 43 and the second guiding hole 44 are two independent guiding holes, the extending direction of the connecting wire 30 in the fixing member 40 is also fixed, that is, the crossing angle between the first plane where the U-shaped fixing end 31 of the connecting wire 30 exposed outside the fixing member 40 is located and the second plane where the free end is located is fixed.

[0047] Furthermore, the crossing angle and the torsion angle of the first guiding hole 43 and the second guiding hole 44 of the fixing member 40 determine the crossing angle between the first plane where the U-shaped fixing end 31 is located and the second plane where the free end is located, and then determine the swinging direction of the latch 10 relative to the load limiting force module 20. Therefore, by changing the crossing angle and the torque angle of the first guiding hole 43 and the second guiding hole 44 to adapt to the habitual position of the user when buckling the lock tongue, it also meets the various requirements of different angles and positions of the latch 10 at the seats of different vehicles, improving the adaptability and reliability of the latch assembly 100.

[0048] Furthermore, as Figures 4 to 7 shown, a protrusion 411 is provided at the first end 41 of the fixing member 40, and the protrusion 411 of the fixing member 40 is inserted into the first housing 11 and abuts against the fastener 12 (as Figure 7 shown). In this embodiment, as Figure 5 shown, the protrusion 411 is located between the first guiding hole 43 and the second guiding hole 44. In some other embodiments, the protrusion 411 can also be provided on both sides of the first guiding hole 43 or the second guiding hole 44, and the protrusion 411 can also be provided in multiple numbers, which is not specifically limited herein.

[0049] The protrusion 411 can prevent relative rotation between the first shell 11 of the lock 10 and the fixing component 40, and also largely prevent bending and wear of the connecting wire 30 at the first end 41 of the fixing component 40 and the first shell 11 of the lock 10, thereby extending the service life of the fixing component 40 and the lock 10.

[0050] 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 make the first end 41 of the fixing component 40 not have to be fully inserted into the first shell 11 of the lock 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 10 to avoid reducing the strength of the first shell 11 of the lock 10 due to the opening being too large.

[0051] When the protrusion 411 is inserted into the first housing 11 of the lock buckle 10, as in the embodiment Figure 2 As shown, the first end 41 of the fixing component 40 can be abutted against the first shell 11, so as to avoid exposing the connecting material 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.

[0052] Furthermore, the contact surface 412 of the protrusion 411 and the fastener 12 matches the shape of the fastener 12. Figure 7 As shown, the abutting surface 412 of the protrusion 411 and the fastener 12 is arc-shaped.

[0053] It should be noted that the arc shape of the abutting surface 412 of the protrusion 411 in this embodiment is only exemplary and is not intended to limit the protection scope of the present disclosure. In other embodiments, the abutting surface 412 of the protrusion 411 can be in 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 can be trapezoidal.

[0054] In the first embodiment, if Figure 8 As shown, the second end 42 of the fixing member 40 is further provided with an inserting portion 421. Figure 7 As shown, correspondingly, the second shell 21 also includes a plug hole 22 receiving the plug part 421, and the plug part 421 is inserted into the second shell 21, and the plug part 421 and the plug hole 22 are gap-matched, and the two can be fixed according to needs, which is not specifically limited here.

[0055] Inserted into the second housing 21 of the load limiting force module 20 through the insertion part 421, the connection wire 30 cannot be bent between the fixing part 40 and the second housing 21, and the connection wire 30 can also be isolated from the second housing 21, and the connection wire 30 does not abut against the second housing 21, avoiding mutual abrasion between the two, thereby extending the service life of the fixing part 40 and the second housing 21 of the load limiting force module 20.

[0056] In some embodiments, such as Figure 4 , Figure 5 , Figure 8 and Figure 9 shown, the fixing part 40 is further provided with a limiting baffle 45, and the limiting baffle 45 can be located on both sides of the insertion part 421. After the insertion part 421 is inserted into the insertion hole 22 of the second housing 21, the limiting baffle 45 abuts against the outer wall of the second housing 21 to limit the position of the fixing part 40 in the extending direction of the connection wire 30, avoiding the fixing part from moving excessively towards the second housing 21 of the load limiting force module 20, and exposing the connection wire 30 at the first end 41 of the fixing part 40 or causing the protrusion 411 at the first end 41 of the fixing part 40 to disengage from the first housing 11 of the buckle 10.

[0057] As can be seen from the above, the fixing part 40 can be made of a soft material, so the fixing part 40 can also be bent to a certain extent when the buckle 10 swings. In some other embodiments, the fixing part 40 can also be made of a hard material, and the fixing part 40 made of a hard material makes the fixing part 40 unable to be bent, that is, once the fixing part 40 is sleeved outside the connection wire 30, the buckle 10 can no longer twist or even swing relative to the load limiting force module 20.

[0058] In the second embodiment, as Figure 10 and Figure 11 shown, the first end 41 and the second end 42 of the fixing part 40 are respectively wrapped outside the first housing 11 and the second housing 21. In this embodiment, the fixing part 40 is made of a soft material, and the soft material can be wound around the outer wall of the connection wire 30 to form the fixing part 40. The fixing part 40 formed by winding the soft material can also twist the connection wire 30 and fix the twisting angle of the connection wire 30, thereby changing the swinging angle of the buckle 10 relative to the load limiting force module 20.

[0059] 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 on the seat. When the driver or passenger is seated, 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.

[0060] The specific manner in which the functions implemented in the seat belt buckle 10 in the above embodiments have been described in detail in the embodiments related to the buckle assembly 100 and will not be elaborated here.

[0061] It can be understood that "a plurality of" in the present disclosure means two or more, and other quantifiers are similar thereto. "And / or" describes the association relationship of associated objects and indicates that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms of "a", "the", and "said" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0062] Furthermore, it can be understood that terms such as "first", "second", etc. are used to describe various structures, but these structures should not be limited to these terms. These terms are only used to distinguish the same type of structures from each other and do not indicate a specific order or importance. In fact, the expressions such as "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first structure can also be referred to as the second structure, and similarly, the second structure can also be referred to as the first structure.

[0063] Furthermore, it can be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "front", "rear", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present embodiment and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0064] Those skilled in the art will readily think of 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, which follow the general principles of the present disclosure and include the common general knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0065] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A latch assembly (100), characterized in that, it comprises: A latch (10), including a first housing (11); A load limiting force module (20), including a second housing (21); A connecting wire (30), connected between the latch (10) and the load limiting force module (20), and the connecting wire (30) flexibly connects the latch (10) and the load limiting force module (20); and A fixing member (40), sleeved outside the connecting wire (30) between the latch (10) and the load limiting force module (20), wherein, along the extending direction of the connecting wire (30), the fixing member (40) includes a first end (41) and a second end (42), the first end (41) overlaps and abuts against the first housing (11), and the second end (42) overlaps and abuts against the second housing (21) to limit the rotation of the fixing member (40) relative to the latch (10) and the load limiting force module (20).

2. The latch assembly (100) according to claim 1, characterized in that, the fixing member (40) includes a through first guiding hole (43) and a second guiding hole (44), Two free ends (32) of the connecting wire (30) respectively penetrate into the first guiding hole (43) and the second guiding hole (44) from the first end (41) of the fixing member (40), and the connecting wire (30) forms a U-shaped fixing end (31) at the first end (41) of the fixing member (40), and the fixing end (31) is fixedly connected to the first housing (11) through a fastener (12), wherein, a protrusion (411) is provided at the first end (41) of the fixing member (40), and the protrusion (411) is inserted into the first housing (11) and abuts against the fastener (12).

3. The latch assembly (100) according to claim 2, characterized in that, the protrusion (411) is located between the first guiding hole (43) and the second guiding hole (44), and the abutting surface (412) of the protrusion (411) abutting against the fastener (12) is arc-shaped to be adapted to the outer wall of the fastener (12).

4. The latch assembly (100) according to claim 2, characterized in that, a plug-in portion (421) is provided at the second end (42) of the fixing member (40), and the plug-in portion (421) is inserted into the second housing (21) to isolate the connecting wire (30) and the second housing (21), so that the connecting wire (30) does not abut against the second housing (21).

5. The latch assembly (100) according to claim 4, characterized in that, The fixing member (40) is further provided with a limiting baffle (45), and the limiting baffle (45) is located on both sides of the insertion portion (421). After the insertion portion (421) is inserted into the second housing (21), the limiting baffle (45) abuts against the second housing (21) to limit the position of the fixing member (40) in the extending direction of the connecting wire (30).

6. The buckle assembly (100) according to claim 2, wherein, the first guiding hole (43) and the second guiding hole (44) are arranged in a cross manner, so that the connecting wire (30) located in the first guiding hole (43) and the second guiding hole (44) intersects and twists.

7. The buckle assembly (100) according to any one of claims 1-6, wherein, the fixing member (40) is a member with a fixed shape made of a hard material or a soft material.

8. The buckle assembly (100) according to claim 1, wherein, the first end (41) of the fixing member (40) is wrapped outside the first housing (11), and the second end (42) of the fixing member (40) is wrapped outside the second housing (21).

9. The buckle assembly (100) according to claim 8, wherein, the fixing member (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 member (40).

10. A seat belt buckle (10), wherein, comprises: a locking tongue; and the buckle assembly (100) according to any one of claims 1-9, and the locking tongue is snapped into the buckle (10) of the buckle assembly (100) to fix the seat belt to the seat.

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