A rotatable quick release end piece

Abstract

The application discloses a rotatable quick unlocking end piece to solve the problem of poor flexibility and comfort in the installation of the existing fixed end piece of the safety belt webbing. The application comprises a first lock head, a first lock tongue and a steel plate support, adopts a lock tongue-lock head structure to realize the quick unlocking function, and is provided with the steel plate support in the inside of the first lock head, and the steel plate support partially extends from the bottom of the first lock head, and the extending part is rotationally connected with the bolt assembly. Compared with the traditional fixed end piece, the application can not only realize the quick unlocking, but also has the rotation function, significantly improves the daily wearing comfort, and simultaneously, the rotation function also gives the end piece a larger angle tolerance in the installation, reduces the requirement on the position precision of the whole vehicle mounting point, makes the installation process more flexible, can adapt to the layout requirements of different vehicle models or seat configurations, can also save the space in the vehicle, and the installation space is more flexible.

Description

Technical Field

[0001] This application relates to the field of seat belt technology, specifically to a rotatable quick-unlocking end piece. Background Technology

[0002] Car seat belts are safety devices designed to restrain occupants during a collision and to prevent them from colliding with the steering wheel and dashboard, or from being ejected from the vehicle during a collision, thus preventing injury or death.

[0003] One end of the seatbelt webbing connects to an assembly with a built-in retractor, which is typically rigidly fixed to the vehicle body structure below the B-pillar by bolts. The upper middle part of the seatbelt webbing passes through a guide ring located at the top of the B-pillar. This guide ring is responsible for changing the direction of the seatbelt webbing and constraining its movement trajectory. Figure 1 and Figure 2 As shown, the other end (connecting end 601) of the seatbelt webbing 6 is connected to a fixed end piece 9, which is typically fixed directly to the vehicle floor or B-pillar by bolts. This rigid connection between the fixed end piece and the vehicle body necessitates precise installation space and geometric positioning in the overall vehicle layout design. Furthermore, the fixed installation angle may result in poor fit between the webbing and the occupant's body, affecting comfort and making it difficult to adapt to the layout requirements of different vehicle models or seat configurations. Utility Model Content

[0004] Therefore, this application provides a rotatable quick-unlocking end piece to solve the problems of insufficient flexibility and poor comfort during installation of existing seat belt webbing with a fixed end piece.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A rotatable quick-unlocking end piece includes: a first lock head, a first lock tongue, and a steel plate bracket;

[0007] The first lock head has a steel plate support inside, which extends out of the bottom of the first lock head and is rotatably connected to a bolt assembly. The bolt assembly is used to install the end piece. The top of the first lock head has an insertion port that engages with the first lock tongue and an unlocking button corresponding to the other side of the insertion port.

[0008] One end of the first locking tongue is provided with an installation ring, which is sleeved with the connecting end of the seat belt webbing, and the other end of the first locking tongue is used to be inserted into the insertion port.

[0009] Optionally, the end piece is mounted on the outer end of the seat, the outer end of the seat is provided with a side plate, and the side plate is provided with mounting holes for mounting the bolt assembly;

[0010] The bolt assembly includes a screw and a nut. The screw is divided into a non-threaded end near its head and a threaded end away from its head. The protruding part of the steel plate bracket is sleeved outside the non-threaded end and is rotatable around the non-threaded end.

[0011] Optionally, it also includes a connecting plate, which includes a vertical plate, a horizontal plate and a limiting strip. The vertical plate is sleeved on the outside of the non-threaded end, and the horizontal plate is located on one side of the bottom of the vertical plate and is perpendicularly connected to the vertical plate.

[0012] The limiting strip is located at the top of the vertical plate and corresponds to the opposite side of the horizontal plate. The side plate is provided with limiting holes that are adapted to the limiting strip.

[0013] Optionally, the cross plate has a strip-shaped hole, and the end of the protruding part is inserted into the strip-shaped hole and can swing along the length direction of the strip-shaped hole.

[0014] Optionally, it also includes a locking hole provided on the B-pillar for fixing the first locking tongue.

[0015] Optionally, an elastic bushing is embedded in the card hole, and the diameter of the card hole is smaller than the size of the first locking tongue insertion end.

[0016] Compared with the prior art, this application has at least the following beneficial effects:

[0017] Based on further analysis and research of existing technical problems, this application provides a rotatable quick-unlocking end piece. The end piece adopts a lock tongue-lock head structure to achieve quick unlocking function. A steel plate bracket is set inside the first lock head, and part of the steel plate bracket extends out of the bottom of the first lock head. The extended part forms a rotatable connection with the bolt assembly. The bolt assembly simultaneously undertakes the dual functions of fixing the end piece and providing a rotation shaft, thereby realizing the rotation function of the end piece.

[0018] Compared to traditional fixed end pieces, this application not only enables quick unlocking but also features a rotation function, significantly improving the overall performance of the seatbelt system. When an occupant pulls the webbing, the rotation function automatically adjusts the end piece angle, ensuring the webbing always conforms to the body curves of occupants of different body types along the optimal path, significantly improving daily wearing comfort. It also achieves efficient impact force dispersion in the event of a collision. At the same time, the rotation function gives the end piece a greater angular tolerance during installation, reducing the requirements for the accuracy of the vehicle's mounting points, making the installation process more flexible, adaptable to the layout needs of different vehicle models or seat configurations, and saving interior space, making the installation space more flexible. Attached Figure Description

[0019] To more intuitively illustrate the prior art and this application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary drawings, those skilled in the art are able to easily make conventional adjustments or further optimizations to the addition / reduction / classification, specific shapes, positional relationships, connection methods, size ratios, etc. of certain units (components).

[0020] Figure 1 A schematic diagram of the installation structure of an existing fixed end piece provided for this application;

[0021] Figure 2 for Figure 1 Schematic diagram of the connection between the fixed end piece and the seat belt webbing;

[0022] Figure 3 This is a schematic diagram of the structure of a rotatable quick-unlocking terminal piece provided in one embodiment of this application;

[0023] Figure 4 This is a schematic diagram illustrating the connection between the seat belt webbing and the first locking tongue according to one embodiment of this application;

[0024] Figure 5 for Figure 4 A partial schematic diagram of the connecting end of the first locking tongue and the first locking tongue;

[0025] Figure 6 for Figure 3 Connection diagram of the first lock head, steel plate bracket, connecting plate and bolt assembly Figure 1 ;

[0026] Figure 7 for Figure 3 Connection diagram of the first lock head, steel plate bracket, connecting plate and bolt assembly Figure 2 .

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. First lock cylinder; 11. Insertion port; 12. Unlock button; 2. First bolt; 3. Steel plate bracket; 4. Connecting plate; 41. Vertical plate; 42. Horizontal plate; 421. Strip hole; 43. Limiting strip; 5. Bolt assembly; 51. Screw; 52. Nut; 6. Safety belt webbing; 601. Connecting end; 7. Side plate; 8. Second bolt; 9. Fixed end piece. Detailed Implementation

[0029] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] In the description of this application: unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," etc., in this application are intended to distinguish the objects referred to and do not have any special meaning in terms of technical connotation (e.g., they should not be construed as an emphasis on importance or order). Expressions such as "including," "comprising," and "having" also mean "not limited to" (certain units, components, materials, steps, etc.).

[0031] The terms used in this application, such as "upper," "lower," "left," "right," and "middle," are generally used to indicate the general relative positional relationship for the purpose of intuitive understanding by referring to the accompanying drawings, and are not absolute limitations on the positional relationship in the actual product.

[0032] One embodiment of this application discloses a rotatable quick-unlocking end piece, which replaces the traditional fixed end piece. It integrates a rotating mechanism and a quick-unlocking function, offering greater flexibility during installation and adapting to the posture changes of occupants of different body types, significantly improving the comfort and safety performance of the seatbelt. This end piece is directly installed on the connecting end 601 of the seatbelt webbing 6, replacing the traditional fixed end piece and serving as the connection hub between the webbing and the vehicle body anchor point. Simultaneously, the seatbelt webbing 6 is provided with a freely sliding second locking tongue 8 (see...). Figure 4 and Figure 5 A second lock is provided on the inner side of the seat (i.e. the side away from the door). The second lock is provided with an insertion port 11 for engaging with the second lock tongue 8 and an integrated unlock button 12, forming a complete restraint terminal.

[0033] The following is a detailed description of the specific structural design of the rotatable quick-unlocking terminal block provided in this application:

[0034] like Figures 3-7 As shown, the rotatable quick-unlocking end piece includes: a first lock head 1, a first lock tongue 2, and a steel plate bracket 3; the first lock head 1 has a steel plate bracket 3 inside, the steel plate bracket 3 extends out of the bottom of the first lock head 1, and the extended part of the steel plate bracket 3 is rotatably connected to a bolt assembly 5, the bolt assembly 5 being used to install the end piece; the top of the first lock head 1 is provided with an insertion port 11 that engages with the first lock tongue 2 and an unlocking button 12 corresponding to the other side of the insertion port 11; when it is necessary to release the seat belt webbing 6, the occupant can press the unlocking button 12 to release the restraint on the first lock tongue 2;

[0035] One end of the first locking tongue 2 is provided with an installation ring, which is sleeved with the connecting end 601 of the seat belt webbing 6, and the other end of the first locking tongue 2 is used to be inserted into the insertion port 11.

[0036] Preferably, the end piece of this application is installed on the outer end of the seat, and the outer end of the seat is provided with a side plate 7, and the side plate 7 is provided with mounting holes for mounting bolt assembly 5;

[0037] The bolt assembly 5 includes a screw 51 and a nut 52. The screw 51 is divided into a non-threaded end near its head and a threaded end away from its head. The protruding part of the steel plate bracket 3 is sleeved on the outside of the non-threaded end and can rotate around the non-threaded end of the screw 51, thereby driving the first lock head 1, the first lock tongue 2 and the seat belt webbing 6 to adaptively adjust their angles as a whole.

[0038] During installation, the protruding part of the steel plate bracket 3 is fitted onto the outside of the non-threaded end of the screw 51 through the through hole provided thereon, and is fixed as a whole by fastening the nut 52 to the threaded end.

[0039] Preferably, such as Figure 6 and Figure 7 As shown, it also includes a connecting plate 4, which includes a vertical plate 41, a horizontal plate 42 and a limiting strip 43. The vertical plate 41 is sleeved on the outside of the non-threaded end, and the horizontal plate 42 is located on one side of the bottom of the vertical plate 41 and is perpendicularly connected to the vertical plate 41. The limiting strip 43 is located on the top of the vertical plate 41 and corresponds to the opposite side of the side where the horizontal plate 42 is located. The side plate 7 is provided with a limiting hole that matches the limiting strip 43.

[0040] Preferably, the cross plate 42 has a strip-shaped hole 421, and the end of the protruding part is inserted into the strip-shaped hole 421. When the first locking tongue 2 and the first locking head 1 are in the locked state, the seat belt webbing 6, driven by the first locking tongue 2, the first locking head 1, and the steel plate bracket 3, swings along the length direction of the strip-shaped hole 421 with the help of the steel plate bracket 3. When the occupant is violently thrown forward due to inertia, the seat belt webbing 6 is tightened, and the huge pulling force is applied to the locking head through the locking tongue. This pulling force will force the steel plate bracket 3 on the locking head to rotate and produce a small amplitude translation or swing along the length direction of the strip-shaped hole 421, thereby mitigating the impact force on the occupant to a certain extent and improving the cushioning effect of the seat belt.

[0041] Preferably, it also includes a locking hole provided on the B-pillar for fixing the insertion end of the first locking tongue 2; an elastic bushing made of elastic material can be embedded in the locking hole, and the diameter of the locking hole is slightly smaller than the size of the insertion end of the first locking tongue, so that the first locking tongue 2 is locked and fixed by the elastic deformation of the elastic bushing when inserted.

[0042] After the seat belt webbing is pulled out from the first lock head 1, it is fixed by inserting the first locking tongue 2 at the end of the seat belt webbing 6 into this locking hole, thereby preventing the seat belt webbing 6 from swinging around in the car and keeping the car interior clean; when the seat belt needs to be used again, the first locking tongue 2 can be pulled out from this locking hole.

[0043] The internal structure of the first locking tongue 2 and the first locking head 1 in this application adopts the same standardized structural design as the second locking tongue 8 and the second locking head. Their specific mechanical structure, locking principle and operation method can be directly referred to the mature technical solution of the traditional seat belt locking tongue-lock head assembly, and will not be described again here.

[0044] In actual operation, the first locking tongue 2 located at the connecting end 601 of the seat belt webbing 6 is first inserted into the first locking head 1 fixed on the same side; then, the occupant naturally pulls the seat belt webbing 6 from the front of the body, adjusts the sliding second locking tongue 8 to a suitable position according to their body shape, and then precisely inserts it into the second locking head insertion port 11 on the inner side of the seat until a meshing sound is heard, thus completing the fastening process; throughout the process, the rotatable quick-release end piece connected to the end of the seat belt webbing 6 will automatically adjust its angle according to the tension of the seat belt webbing 6, ensuring that the webbing always conforms to the occupant's shoulder and pelvic curves in the optimal path;

[0045] When the seat belt webbing 6 is not in use, the occupant presses the unlock button on the first lock head 1 and the second lock head respectively, so that the first locking tongue 2 and the second locking tongue 8 disengage from their respective lock heads; then, the occupant can insert the first locking tongue 2 connected to the end of the seat belt webbing 6 into the fixing hole pre-set on the B pillar, so as to securely fix the first locking tongue 2 through the fixing hole.

[0046] The end piece provided in this application not only enables quick unlocking but also features a rotation function, allowing it to rotate within any designed angle, significantly improving the overall performance of the seatbelt system. When an occupant pulls the webbing, the force acting on the webbing drives the end piece to automatically adjust its angle around its rotation center (specifically, the first locking head 1, the first locking tongue 2, and the steel plate bracket 3 rotate as a whole around the non-threaded end of the screw 51). This adaptive rotation mechanism ensures that the seatbelt webbing 6 always conforms to the occupant's body curves along the optimal path, precisely matching the posture changes of occupants of different body types. This not only provides greater comfort during daily wear but also achieves more efficient force dispersion in the event of a collision. Simultaneously, the rotation function gives the end piece a larger angular tolerance during installation, reducing the requirements for the accuracy of the vehicle's mounting points, making the installation process more flexible, enhancing design adaptability, improving wearing comfort, and adapting to the layout requirements of different vehicle models or seat configurations.

[0047] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A rotatable quick-unlocking terminal piece, characterized in that, include: First lock cylinder, first lock tongue, and steel plate support; The first lock head has a steel plate support inside, which extends out of the bottom of the first lock head and is rotatably connected to a bolt assembly. The bolt assembly is used to install the end piece. The top of the first lock head has an insertion port that engages with the first lock tongue and an unlocking button corresponding to the other side of the insertion port. One end of the first locking tongue is provided with an installation ring, which is sleeved with the connecting end of the seat belt webbing, and the other end of the first locking tongue is used to be inserted into the insertion port.

2. The rotatable quick-unlocking terminal piece according to claim 1, characterized in that, The end piece is installed on the outer side of the seat, and the outer side of the seat is provided with a side plate, and the side plate is provided with mounting holes for installing the bolt assembly; The bolt assembly includes a screw and a nut. The screw is divided into a non-threaded end near its head and a threaded end away from its head. The protruding part of the steel plate bracket is sleeved outside the non-threaded end and is rotatable around the non-threaded end.

3. The rotatable quick-unlocking terminal piece according to claim 2, characterized in that, It also includes a connecting plate, which includes a vertical plate, a horizontal plate and a limiting strip. The vertical plate is sleeved on the outside of the non-threaded end, and the horizontal plate is located on one side of the bottom of the vertical plate and is perpendicularly connected to the vertical plate. The limiting strip is located at the top of the vertical plate and corresponds to the opposite side of the horizontal plate. The side plate is provided with limiting holes that are adapted to the limiting strip.

4. The rotatable quick-unlocking end piece according to claim 3, characterized in that, The horizontal plate has a strip-shaped hole, and the end of the protruding part is inserted into the strip-shaped hole and can swing along the length of the strip-shaped hole.

5. The rotatable quick-unlocking end piece according to claim 1, characterized in that, It also includes a locking hole on the B-pillar for securing the first locking tongue.

6. The rotatable quick-unlocking terminal piece according to claim 5, characterized in that, An elastic bushing is embedded in the card hole, and the diameter of the card hole is smaller than the size of the first locking tongue insertion end.

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