Automatic safety belt locking structure with protection structure and locking method

Abstract

The invention relates to the technical field of safety belt locking, in particular to an automatic safety belt locking structure with a protection structure and a locking method. Comprising the following steps that a plurality of fixing binding belts are installed on a saddle, and the fixing binding belts are inserted into an automatic locking device; a locking key device on the automatic locking device is pressed to lock the plurality of fixing binding belts in an inserting manner; a tightness adjuster on the automatic locking device is rotated to synchronously tighten the plurality of fixed tightening belts; the back locking threaded conical barrel is reversely rotated to lock and fix the tightness adjuster; the safety belt has the beneficial effects that the problems that the safety belt cannot be adaptively used on a racing car or a child seat, and the situation that the body jumps out of the upper end and the lower end of the safety belt in the actual use process are solved; meanwhile, the problem that the person limited by the safety belt falls off due to the fact that adaptive attaching and tensioning adjustment cannot be carried out is solved. Meanwhile, the safety belt is inconvenient to mount, dismount and replace.

Description

Technical Field

[0001] The present invention relates to the technical field of seat belt locking, and more specifically, to a seat belt automatic locking structure and locking method with a protection structure. Background Art

[0002] Existing conventional vehicle seat belts are usually used by inserting a seat belt buckle and a retractor. The weighted pendulum in the retractor swings forward due to inertia, driving the pawl to catch the ratchet gear and instantly locking the rotation of the spool. Similar to a seat belt automatic locking structure and locking method with the patent number CN202310657984.X, this seat belt automatic locking structure at least includes: a seat belt buckle; a seat belt tongue adapted to the seat belt buckle; a position sensing module disposed on the seat belt tongue for obtaining the distance information between the seat belt buckle and the seat belt tongue; a sound prompt module electrically connected to the position sensing module, and the sound prompt module can emit a first prompt sound according to the distance information to guide the user to adjust the position of the seat belt tongue. This seat belt automatic locking structure can obtain the distance information between the seat belt buckle and the seat belt tongue by means of the position sensing module, and the sound prompt module can emit a first prompt sound according to this distance information to guide the user to adjust the position of the seat belt tongue, so as to lock the seat belt. There is no need for the user to deliberately search, and the user's body does not need to twist, which saves time and effort and is beneficial to improving the vehicle use experience.

[0003] However, this commonly used seat belt is more reasonable for use in the driver's seat of a vehicle, but it cannot be adapted for use in a racing car or a child seat. In actual use, the body may slip out from the upper and lower ends of the seat belt. At the same time, it cannot be adapted for fitting and tension adjustment, resulting in the person restricted by the seat belt falling off. At the same time, it is not convenient for the installation, disassembly and replacement of the seat belt. Summary of the Invention

[0004] Therefore, the technical problems to be solved by the present invention are to overcome the problems in the prior art that it cannot be adapted for use in a racing car or a child seat, and in actual use, the body may slip out from the upper and lower ends of the seat belt; at the same time, it cannot be adapted for fitting and tension adjustment, resulting in the person restricted by the seat belt falling off; and at the same time, it is not convenient for the installation, disassembly and replacement of the seat belt.

[0005] To this end, the technical solution adopted is that a seat belt automatic locking structure and locking method with a protection structure of the present invention includes an automatic lock, and the automatic lock is locked and adjusted at the inner ends of a plurality of fixed binding straps, and the outer ends of the plurality of fixed binding straps are all locked and fixed on the vehicle seat.

[0006] Preferably, the fixed binding strap includes a webbing, an outer lock tongue, an inner lock tongue, and a guide plate. The two ends of the webbing are respectively fixed with an outer lock tongue and an inner lock tongue. The outer end of the webbing is locked and fixed on the seat through the outer lock tongue, and the inner end of the webbing is locked and adjusted on the automatic lock through the inner lock tongue. A guide plate is wound around the webbing.

[0007] Preferably, a honeycomb woven buffer strap is arranged inside the webbing, and a plurality of slots are arranged inside the honeycomb woven buffer strap.

[0008] Preferably, locking perforations are arranged on both the outer lock tongue and the inner lock tongue.

[0009] Preferably, the automatic lock includes a lock housing, a lock base, a tension adjuster, and a lock button. An outer insertion ring is arranged between the lock housing and the lock base. The middle parts of the lock housing and the lock base are connected through the tension adjuster, and a lock button is longitudinally slidably arranged inside the tension adjuster.

[0010] Preferably, a reverse thread groove ring is arranged on the lock housing. A reverse thread seat is connected to the reverse thread groove ring through reverse thread fit. The reverse thread seat is fixed at the lower end of the reverse lock thread cone barrel. An inner locking cone platform is arranged on the inner wall of the reverse lock thread cone barrel and fits on the outer wall of the tension adjuster. A plurality of rotation grooves are arranged at the upper end of the outer wall of the tension adjuster.

[0011] Preferably, a rotating bottom platform is arranged at the lower end of the tension adjuster. The tension adjuster is rotationally connected to the middle part of the lock base through the rotating bottom platform. A plurality of limiting sliding grooves are arranged on the inner wall of the tension adjuster. A baffle is arranged at the upper end of the inner wall of the limiting sliding groove. A plurality of communicating limiting grooves are arranged on the outer wall of the tension adjuster.

[0012] Preferably, the lock button includes a lock button, a button operation sliding table, a connecting table, and a lock insertion post. The lock button is fixed at the upper end of the button operation sliding table. The outer wall of the button operation sliding table is slidably arranged in the limiting sliding groove through a limiting slider. A plurality of connecting tables are fixed on the outer wall of the button operation sliding table. The plurality of connecting tables are respectively longitudinally slidably limited in the communicating limiting grooves. A plurality of lock insertion posts are respectively fixed on the plurality of connecting tables. The lock insertion posts slide between the outer insertion rings of the lock housing and the lock base, and the lock insertion posts are tightly inserted into the inner lock tongue of the fixed binding strap.

[0013] Preferably, a button spring is arranged at the lower end of the button operation sliding table. The button spring is sleeved on a spring shaft, and the spring shaft is fixed on the lock base. The button spring is arranged between the lock base and the button operation sliding table.

[0014] An automatic locking method for a seat belt with a protection structure includes the following steps:

[0015] S1: Install multiple fixed tie-down straps on the seat and insert the multiple fixed tie-down straps into the automatic locking device;

[0016] S2: Press the locking button on the automatic locking device to lock and secure the inserted multiple fixed tie-down straps;

[0017] S3: Rotate the tension adjuster on the automatic locking device to synchronously tighten the multiple fixed tie-down straps;

[0018] S4: Rotate the reverse-locking threaded cone barrel in the opposite direction to lock and fix the tension adjuster;

[0019] S5: During the tensioning process, press the locking button to remove the multiple fixed tie-down straps for loosening.

[0020] Other features and advantages of the present invention will be described in the subsequent specification, and in part, will become apparent from the specification or be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures specifically pointed out in this application document.

[0021] The following through the drawings and embodiments, the technical solutions of the present invention will be further described in detail. Description of the Drawings

[0022] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0023] Figure 1 is the overall directional structure schematic diagram of the present invention;

[0024] Figure 2 is the structure schematic diagram of the fixed tie-down strap of the present invention;

[0025] Figure 3 is the structure schematic diagram of the installation of some fixed tie-down straps of the present invention;

[0026] Figure 4 is the overall structure schematic diagram of the automatic locking device of the present invention;

[0027] Figure 5 is the structure schematic diagram of the reverse-locking threaded cone barrel of the present invention;

[0028] Figure 6 is the structure schematic diagram of the locking housing of the present invention;

[0029] Figure 7 is the structure schematic diagram of the locking base of the present invention;

[0030] Figure 8 is the structure schematic diagram of the tension adjuster of the present invention;

[0031] Figure 9 It is a schematic diagram of the internal structure of the tension adjuster of the present invention;

[0032] Figure 10 The structure diagram of the locking button device of the present invention is shown in FIG. Figure 1 ;

[0033] Figure 11 The structure diagram of the locking button device of the present invention is shown in FIG. Figure 2 .

[0034] In the figure: fixed tightening belt 1, automatic locker 2, webbing 3, outer locking tongue 4, inner locking tongue 5, guide plate 6, honeycomb woven buffer belt 7, locking shell 8, locking base 9, tension adjuster 10, locking button 11, reverse locking thread cone barrel 12, reverse thread groove ring 13, reverse thread seat 14, inner locking cone 15, rotating base 16, limiting slide 18, connecting limiting groove 19, locking button 20, button operation slide 21, connecting platform 22, locking column 23, button spring 24, spring shaft 25. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "middle", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application 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, and therefore cannot be understood as a limitation on the present application. The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0037] In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the contact between the first and second features through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0039] Embodiment 1:

[0040] As Figure 1 and Figure 2 shown, a seatbelt automatic locking structure with a protection structure and a locking method include an automatic lock 2, and the automatic lock 2 is locked and adjusted at the inner ends of a plurality of fixed binding straps 1, and the outer ends of the plurality of fixed binding straps 1 are all locked and fixed on the seat.

[0041] The working principle and beneficial effects of this embodiment are: by locking and adjusting a plurality of fixed binding straps 1 with the automatic lock 2, and the outer ends of the plurality of fixed binding straps 1 are all locked and fixed on the seat, so that the fixed binding straps 1 in different angular directions can be tightened on the seat. By installing the plurality of fixed binding straps 1 at specific positions and inserting them into the automatic lock 2 for locking and integration, and by synchronously adjusting and tightening the plurality of fixed binding straps 1 on the automatic lock 2, it is further tightened on the strapped passengers to complete the adjustment of seatbelt use;

[0042] Furthermore, it solves the problems that the conventionally used seatbelt is more reasonable to use in the vehicle driver's seat but cannot be adapted for use on a racing car or a child seat, and in the actual use process, the body may slip out from the upper and lower ends of the seatbelt; at the same time, it solves the problem that the fitting and tension adjustment cannot be adapted, resulting in the person restricted by the seatbelt falling off; at the same time, it solves the problem that it is inconvenient to install, disassemble and replace the seatbelt.

[0043] Embodiment 2:

[0044] As Figure 1 — Figure 11 shown, a seatbelt automatic locking structure with a protection structure and a locking method, the fixed binding strap 1 includes a webbing 3, an outer lock tongue 4, an inner lock tongue 5 and a guide plate 6. The two ends of the webbing 3 are respectively fixed with an outer lock tongue 4 and an inner lock tongue 5. The outer end of the webbing 3 is locked and fixed on the seat through the outer lock tongue 4, the inner end of the webbing 3 is locked and adjusted on the automatic lock 2 through the inner lock tongue 5, and a guide plate 6 is wound around the webbing 3.

[0045] The working principle and beneficial effects of this embodiment are as follows: Outer lock tongues 4 and inner lock tongues 5 are respectively fixed at both ends of the webbing 3. The outer end of the webbing 3 is locked and fixed to the seat through the outer lock tongue 4 for one - end fixed installation. The inner end of the webbing 3 is locked and adjusted on the automatic lock 2 through the inner lock tongue 5, thereby wrapping the passenger in the webbing 3 to achieve the effect of package safety protection. Since the guiding plate 6 is wound around the webbing 3, the seat - belt guiding plate can help the driver and passengers correctly wear the seat - belt, improving the utilization rate and correct wearing rate of the seat - belt.

[0046] Embodiment 3:

[0047] As Figure 1 — Figure 11 shown, a seat - belt automatic locking structure and locking method with a protection structure, a honeycomb - woven buffer belt 7 is arranged inside the webbing 3, and a plurality of slots are arranged inside the honeycomb - woven buffer belt 7.

[0048] The working principle and beneficial effects of this embodiment are as follows: The traditional webbing 3 usually does not have elasticity itself, and it is prone to breakage and fracture after repeated pulling. By arranging the honeycomb - woven buffer belt 7 inside the webbing 3, the honeycomb - woven buffer belt 7 is arranged between the webbings 3. By using three - dimensional weaving for specific areas of the honeycomb - woven buffer belt 7 and combining with a plurality of slots arranged inside the honeycomb - woven buffer belt 7, the buffering performance is increased. Thus, during the use of the webbing 3, it has buffering elasticity by itself, and at the same time, its elasticity is not particularly large, which is convenient for buffering use during actual use, while ensuring its restraint force, thereby reducing the situation of breakage and fracture prone to occur after repeated pulling; enabling its own use to have a protective effect for durable use.

[0049] Embodiment 4:

[0050] As Figure 1 — Figure 11 shown, a seat - belt automatic locking structure and locking method with a protection structure, locking perforations are arranged on both the outer lock tongue 4 and the inner lock tongue 5.

[0051] The working principle and beneficial effects of this embodiment are as follows: Locking perforations are arranged on both the outer lock tongue 4 and the inner lock tongue 5. The locking perforation on the outer lock tongue 4 facilitates its installation and use on the seat, and the locking perforation on the inner lock tongue 5 facilitates its insertion into the automatic lock 2 for installation and use, facilitating its locking use.

[0052] Embodiment 5:

[0053] As Figure 1 — Figure 11As shown in the figure, there is a seat belt automatic locking structure with a protection structure and a locking method. The automatic lock 2 includes a locking housing 8, a locking base 9, a tension adjuster 10 and a locking button device 11. An external insertion ring is provided between the locking housing 8 and the locking base 9. The middle parts of the locking housing 8 and the locking base 9 are connected by a tension adjuster 10, and a locking button device 11 is longitudinally slidably arranged in the tension adjuster 10.

[0054] The working principle and beneficial effects of this embodiment are as follows: According to the actual use requirements, different numbers of fixed binding straps 1 are placed at different positions for use. It is fixed in the seat by the external lock tongue 4, and its inner end is inserted into the external insertion ring provided between the locking housing 8 and the locking base 9 through the internal lock tongue 5. By pressing down the locking button device 11, the internal lock tongue 5 can be inserted. When the locking button device 11 is released, the internal lock tongue 5 is inserted and fixed, completing the automatic locking installation of the fixed binding strap 1; by adjusting the tension adjuster 10, the tension adjustment of the fixed binding strap 1 can be realized; for the convenience of overall use, one of the fixed binding straps 1 needs to be always connected in the automatic lock 2 to prevent it from falling off and being lost.

[0055] Embodiment 6:

[0056] As Figure 1 — Figure 11 As shown in the figure, there is a seat belt automatic locking structure with a protection structure and a locking method. An anti-thread groove ring 13 is provided on the locking housing 8. An anti-thread seat 14 is connected to the anti-thread groove ring 13 by anti-thread fit. The anti-thread seat 14 is fixed at the lower end of the anti-lock thread cone barrel 12. An internal locking cone 15 is provided on the inner wall of the anti-lock thread cone barrel 12 and fits on the outer wall of the tension adjuster 10. Multiple rotation grooves are provided at the upper end of the outer wall of the tension adjuster 10.

[0057] The working principle and beneficial effects of this embodiment are as follows: When it is necessary to use the tension adjuster 10 to adjust the tension of the fixed binding strap 1, rotate the tension adjuster 10. The tension adjuster 10 drives the locking button device 11 to rotate, and then drives the locked fixed binding strap 1 to make a circular motion around the center of the locking housing 8 and the locking base 9 for tightening, so that the fixed binding strap 1 can be strapped around the passenger; by rotating the anti-lock thread cone barrel 12 in the reverse direction, the anti-thread seat 14 at the lower end of the anti-lock thread cone barrel 12 can be rotated downward in the anti-thread groove ring 13 by thread fit, so that the anti-lock thread cone barrel 12 drives the internal locking cone 15 provided on its inner wall to fit on the outer wall of the tension adjuster 10. The resistance is increased through multiple notches on the inner wall of the internal locking cone 15, and then the tension adjuster 10 after adjusting the tension is locked and fixed to complete the locking after the tension is adjusted.

[0058] Embodiment 7:

[0059] As Figure 1— Figure 11 As shown, a seat belt automatic locking structure with a protection structure and a locking method. A rotating base 16 is provided at the lower end of the tension adjuster 10. The tension adjuster 10 is rotatably connected to the middle end of the locking base 9 through the rotating base 16. A plurality of limiting chutes 18 are provided on the inner wall of the tension adjuster 10. A baffle is provided at the upper end of the inner wall of the limiting chute 18. A plurality of communicating limiting grooves 19 are provided on the outer wall of the tension adjuster 10.

[0060] The working principle and beneficial effects of this embodiment are as follows: The tension adjuster 10 is rotatably connected to the middle end of the locking base 9 through the rotating base 16, which facilitates the rotation of the tension adjuster 10 between the locking housing 8 and the locking base 9. Since a plurality of limiting chutes 18 are provided on the inner wall of the tension adjuster 10 and a baffle is provided at the upper end of the inner wall of the limiting chute 18, it is convenient to drive the locking button device 11 to rotate while enabling the locking button device 11 to slide longitudinally and be limited within the tension adjuster 10, facilitating its locking use. The plurality of communicating limiting grooves 19 provided on the outer wall of the tension adjuster 10 facilitate the longitudinal sliding and rotation of the locking button device 11, preventing interference.

[0061] Embodiment 8:

[0062] As Figure 1 — Figure 11 As shown, a seat belt automatic locking structure with a protection structure and a locking method. The locking button device 11 includes a locking button 20, a button operation slide 21, a connecting platform 22, and a locking plug 23. The locking button 20 is fixed to the upper end of the button operation slide 21. The outer wall of the button operation slide 21 is slidably arranged in the limiting chute 18 through a limiting slider. A plurality of connecting platforms 22 are fixed to the outer wall of the button operation slide 21. The plurality of connecting platforms 22 are respectively longitudinally slidably limited in the communicating limiting grooves 19. A plurality of locking plugs 23 are respectively fixed to the plurality of connecting platforms 22. The locking plugs 23 slide between the outer insertion rings of the locking housing 8 and the locking base 9. The locking plugs 23 are tightly inserted into the inner locking tongue 5 of the fixed binding belt 1.

[0063] The working principle and beneficial effects of this embodiment are as follows: By pressing the locking button 20, since it is fixed to the upper end of the button operation slide 21, the button operation slide 21 is thus pressed. The outer wall of the button operation slide 21 is slidably arranged in the limit chute 18 through the limit slider, so that the button operation slide 21 can be longitudinally slid and pressed in multiple limit chutes 18; Multiple connecting platforms 22 are fixed to the outer wall of the button operation slide 21, and the multiple connecting platforms 22 are respectively longitudinally and slidably limited in the communicating limit groove 19, enabling the multiple connecting platforms 22 to be longitudinally slid and pressed synchronously. Multiple locking insertion posts 23 are respectively fixed on the multiple connecting platforms 22, so that the locking insertion posts 23 slide between the outer insertion rings of the locking housing 8 and the locking base 9, and the locking insertion posts 23 are tightly inserted and locked into the inner locking tongue 5 of the fixed binding belt 1, thereby realizing the insertion and locking of the fixed binding belt 1, as well as unlocking.

[0064] Embodiment 9:

[0065] As Figure 1 — Figure 11 As shown, in a seat belt automatic locking structure and locking method with a protection structure, a button spring 24 is arranged at the lower end of the button operation slide 21. The button spring 24 is sleeved on a spring shaft 25, and the spring shaft 25 is fixed on the locking base 9. The button spring 24 is arranged between the locking base 9 and the button operation slide 21.

[0066] The working principle and beneficial effects of this embodiment are as follows: Since a button spring 24 is arranged at the lower end of the button operation slide 21, and the button spring 24 is arranged between the locking base 9 and the button operation slide 21, an upward acting force is always applied to the locking button 20 and the button operation slide 21 for reset use, enabling the control of locking; The button spring 24 is sleeved on the spring shaft 25, and the spring shaft 25 is fixed on the locking base 9. When rotating, the button spring 24 is stabilized to prevent it from being twisted.

[0067] Embodiment 10:

[0068] A seat belt automatic locking method with a protection structure includes the following steps:

[0069] S1: Install multiple fixed binding belts 1 on the vehicle seat, and insert the multiple fixed binding belts 1 into the automatic lock 2;

[0070] S2: Press the locking button device 11 on the automatic lock 2 to insert and lock the multiple fixed binding belts 1;

[0071] S3: Rotate the tension adjuster 10 on the automatic lock 2 to synchronously tighten the multiple fixed binding belts 1;

[0072] S4: Reverse-rotate the reverse-locking threaded cone barrel 12 to lock and fix the tension adjuster 10;

[0073] S5: During the loosening and tightening process, press the locking button device 11 to take out multiple fixed binding straps 1 for loosening.

[0074] The working principle and beneficial effects of this embodiment are as follows: By using the automatic locking device 2 to lock and adjust multiple fixed binding straps 1, the outer ends of the multiple fixed binding straps 1 are all locked and fixed on the seat, so that the fixed binding straps 1 in different angular directions can be tightened on the seat. By installing the multiple fixed binding straps 1 at specific positions and inserting them into the automatic locking device 2 for locking and integration, and by synchronously adjusting and tightening the multiple fixed binding straps 1 on the automatic locking device 2, they are tightened on the passengers being bound, thus completing the adjustment of the seat belt usage;

[0075] Furthermore, it solves the problems that the conventional seat belts are more reasonable to use in the vehicle driver's seat but cannot be adapted for use on racing cars or child seats, and there will be a situation where the body slips out from the upper and lower ends of the seat belt during actual use; at the same time, it solves the problem that the seat belt cannot be adapted for fitting tension adjustment, resulting in the person restricted by the seat belt falling off; at the same time, it solves the problem of inconvenient installation, disassembly and replacement of the seat belt.

[0076] The above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those of ordinary skill in the art within the essence of the present invention also belong to the protection scope of the present invention.

Claims

1. An automatic locking structure for a seat belt with a protection structure, characterized in that: It includes an automatic locking device (2), and the automatic locking device (2) locks and adjusts the inner ends of a plurality of fixed binding straps (1), and the outer ends of the plurality of fixed binding straps (1) are all locked and fixed on the seat.

2. The automatic locking structure of a seat belt with a protection structure according to claim 1, characterized in that: The fixed binding strap (1) includes a webbing (3), an outer lock tongue (4), an inner lock tongue (5) and a guide plate (6). The outer lock tongue (4) and the inner lock tongue (5) are respectively fixed at both ends of the webbing (3). The outer end of the webbing (3) is locked and fixed on the seat through the outer lock tongue (4), the inner end of the webbing (3) is locked and adjusted on the automatic locking device (2) through the inner lock tongue (5), and a guide plate (6) is wound around the webbing (3).

3. The automatic locking structure of a seat belt with a protection structure according to claim 2, characterized in that: A honeycomb woven buffer strap (7) is arranged inside the webbing (3), and a plurality of slots are arranged inside the honeycomb woven buffer strap (7).

4. The automatic locking structure of a seat belt with a protection structure according to claim 2, characterized in that: Locking perforations are arranged on both the outer lock tongue (4) and the inner lock tongue (5).

5. The automatic locking structure of a seat belt with a protection structure according to claim 1, characterized in that: The automatic locking device (2) includes a locking housing (8), a locking base (9), a tension adjuster (10) and a locking button device (11). An outer insertion ring is arranged between the locking housing (8) and the locking base (9). The middle ends of the locking housing (8) and the locking base (9) are connected through the tension adjuster (10), and a locking button device (11) is longitudinally slidably arranged inside the tension adjuster (10).

6. The automatic locking structure of a seat belt with a protection structure according to claim 5, characterized in that: An anti-thread groove ring (13) is arranged on the locking housing (8), and an anti-thread seat (14) is connected to the anti-thread groove ring (13) through anti-thread fit. The anti-thread seat (14) is fixed at the lower end of an anti-lock thread cone barrel (12). An inner locking cone platform (15) is arranged on the inner wall of the anti-lock thread cone barrel (12) and fits on the outer wall of the tension adjuster (10). A plurality of rotating grooves are arranged at the upper end of the outer wall of the tension adjuster (10).

7. The automatic locking structure of a seat belt with a protection structure according to claim 5, characterized in that: A rotating bottom platform (16) is arranged at the lower end of the tension adjuster (10). The tension adjuster (10) is rotationally connected to the middle end of the locking base (9) through the rotating bottom platform (16). A plurality of limiting sliding grooves (18) are arranged on the inner wall of the tension adjuster (10). A baffle is arranged at the upper end of the inner wall of the limiting sliding groove (18). A plurality of communicating limiting grooves (19) are arranged on the outer wall of the tension adjuster (10).

8. The automatic locking structure of a seat belt with a protection structure according to claim 7, characterized in that: The locking button device (11) includes a locking button (20), a button operation sliding platform (21), a connecting platform (22) and a locking insertion post (23). The locking button (20) is fixed at the upper end of the button operation sliding platform (21). The outer wall of the button operation sliding platform (21) is slidably arranged in the limiting sliding groove (18) through a limiting slider. A plurality of connecting platforms (22) are fixed on the outer wall of the button operation sliding platform (21). The plurality of connecting platforms (22) are respectively longitudinally and slidably limited in the communicating limiting grooves (19). A plurality of locking insertion posts (23) are respectively fixed on the plurality of connecting platforms (22). The locking insertion posts (23) slide between the outer insertion rings of the locking housing (8) and the locking base (9), and the locking insertion posts (23) are locked and inserted into the inner lock tongue (5) of the fixed binding strap (1).

9. The automatic locking structure of a seat belt with a protection structure according to claim 8, characterized in that: A button spring (24) is provided at the lower end of the described button operation slide table (21). The button spring (24) is sleeved on a spring shaft (25), and the spring shaft (25) is fixed on a locking base (9). The button spring (24) is arranged between the locking base (9) and the button operation slide table (21).

10. A method for automatically locking a seat belt with a protection structure, applicable to a seat belt automatic locking structure with a protection structure according to any one of claims 1-9, characterized in that: It includes the following steps: S1: Install a plurality of fixed binding straps (1) on the seat, and insert the plurality of fixed binding straps (1) into the automatic lock (2); S2: Press the locking button (11) on the automatic lock (2) to insert and lock the plurality of fixed binding straps (1); S3: Rotate the tension adjuster (10) on the automatic lock (2) to synchronously tighten the plurality of fixed binding straps (1); S4: Rotate the reverse lock thread cone barrel (12) in the reverse direction to lock and fix the tension adjuster (10); S5: During the tensioning process, press the locking button (11) to take out the plurality of fixed binding straps (1) for loosening.

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