Protective reinforcing device for multi-point safety belt system of traffic vehicle

Abstract

The invention relates to a protection reinforcing device for a multi-point safety belt system of a traffic vehicle, which is used for the multi-point safety belt system on a seat of the traffic vehicle, is connected between two braids of the multi-point safety belt system, and comprises two braid adjusting buckles and a detachable buckling assembly connected between the two braid adjusting buckles, the two braid adjusting buckles are arranged on the two braids respectively and can adjust the height position and position, and a first belt buckle and a second belt buckle of the buckling assembly are movably connected to arc guide sections on the opposite sides of belt buckle connecting parts of the two braid adjusting buckles respectively. According to the protection reinforcing device, the first belt buckle and the second belt buckle are oppositely buckled and are transversely connected between the two woven belts to provide a reinforcing effect, and a safety protection effect is provided for the body of a user; the first belt buckle and the second belt buckle can respectively and naturally rotate and droop to the front side of the braid at the arc guide section of the braid adjusting buckle by means of gravity, so that the interference to the action of a user is reduced.

Description

Technical Field

[0001] The present invention relates to a safety belt system, and in particular to a multi-point safety system for providing four or more fixing points on seats of various types of vehicles, and a protective reinforcement device for enhancing the performance of structural reinforcement and safety protection. Background Art

[0002] Based on high safety requirements, various transportation vehicles such as off-road vehicles, racing cars, and tanks are equipped with seat belt systems, which are mainly four-point, five-point, six-point or seven-point multi-point seat belt systems. In this way, the user's body can be restricted by multiple dispersed fixing points at the same time and firmly fixed on the seat. When sudden external force occurs, the multi-point seat belt system provides good safety protection for the user.

[0003] Among the various multi-point seat belt systems currently known to be used on seats of transportation vehicles, a four-point seat belt system is used as an example. It uses two webbings connected to a webbing retractor to be respectively wound around the left and right sides of the user's body from the upper end of the seat back, and the ends of the two webbings are respectively connected to the left and right sides of the seat cushion and fixed. Then, the seat buckles and tongues connected to the two webbings are respectively connected to the seat buckle assembly, and the seat buckle assembly composed of the seat buckle and tongue is located on the front side of the abdomen of the user's body, so that the two webbings can form a safety protection performance of four positioning points on the user's body. As for the five-point, six-point and seven-point seat belt systems, they are based on the basic structure of the four-point seat belt system, and by adding an auxiliary webbing connected to the seat buckle assembly, the two webbings combined with the auxiliary webbing can form a safety protection performance of more positioning points on the user's body.

[0004] In the aforementioned multi-point safety belt system applied to the seats of transportation vehicles, although the two webbings connected to the webbing retractor can provide safety protection performance at at least four positioning points on the left and right sides of the user's body, the webbing retractor that provides the retracting force to the two webbings is usually arranged above or behind the seat back, and the seat buckle components respectively connected between the two webbings are located on the front side of the abdomen of the user's body. Therefore, the distance between the two webbings and the seat buckle components located at the user's abdomen to the user's shoulders or seat back is relatively long. When the transportation vehicle decelerates or brakes urgently, the webbing retractor retracts the webbing around the user's body on the seat, and although the user is restrained on the seat, the user of the seat will still move forward due to the inertia force, making it easy for the upper body of the user to slide over the webbings on the left and right sides and move forward by tilting between the two webbings. Therefore, the protection performance of the known multi-point safety belt system is still insufficient and needs to be further improved.

[0005] In addition, the seat composition of a motor vehicle disclosed in patent cases such as US2021 / 0206339 A1 published on July 8, 2021 in the United States, and US2022 / 0219640A1 and US2022 / 0219641A1 published on July 14, 2022 in the United States, further adds a detachable connecting belt between the left and right webbings in the multi-point seat belt system of the seat, wherein one end of the connecting belt is fixedly connected to one webbing, and a buckle is installed on the other webbing, and the other end of the connecting belt can be buckled with the buckle and detached from the buckle. In this way, when the traffic vehicle decelerates or brakes urgently, the combination of the connecting belt is between the two webbings on the left and right sides of the user's body on the seat, limiting the distance between the two webbings and allowing the connecting belt to be horizontally blocked in front of the user's chest, so that the upper body of the user, under the action of inertia, will not slide between the left and right webbings and tilt forward.

[0006] The multi-point safety belt system installed in the seat of the above-mentioned motor vehicle utilizes a detachable connecting belt connected between the left and right webbings to improve the safety of the multi-point safety belt system. However, one end of the connecting belt is fixedly connected to one webbing, and the other end of the connecting belt can be buckled with the buckle of the other webbing and detached from the buckle. The connecting belt cannot adjust the height position according to the body shape of different users on the seat. Moreover, after the other end of the connecting belt is detached from the buckle of the other webbing, because one end of the connecting belt is fixedly connected to the webbing, the other end of the connecting belt will sag, but the connecting belt still protrudes on one side of the webbing of the multi-point safety belt system, and the connecting belt is easy to interfere with the movement of the user on the seat. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a protection reinforcement device for a multi-point safety belt system of a transportation vehicle, so as to improve the problems of insufficient protection performance and inconvenience in use of the multi-point safety belt system.

[0008] The technical solution proposed by the present invention is to provide a protection reinforcement device for a multi-point safety belt system of a transportation vehicle, which can be arranged in a multi-point safety belt system on a seat of a transportation vehicle, the multi-point safety belt system can be fixed on the left and right sides of a user's body on the seat with two webbings, the protection reinforcement device can be connected between the two webbings, and the protection reinforcement device includes:

[0009] Two webbing adjustment buckles, which can be respectively installed on the two webbings and can adjust the height position and location on the webbings, each of the webbing adjustment buckles has a buckle connection portion at the bottom end, the buckle connection portion is located in front of the webbing, and the buckle connection portions of the two webbing adjustment buckles assembled on the two webbings form an arc guide section at least on one opposite side; and

[0010] A buckle assembly is detachably connected between two webbing adjustment buckles, and includes a first buckle and a second buckle that can be relatively buckled and detached, the first buckle and the second buckle are respectively movably assembled to the curved guide sections of the buckle connecting parts of the two webbing adjustment buckles, whereby the protective reinforcement device can be connected between the two webbings and placed horizontally on the front side of the user's body by the relative buckling of the first buckle and the second buckle; when the first buckle and the second buckle are unfastened, the first buckle and the second buckle can respectively rotate naturally at the curved guide sections of the two webbing adjustment buckles and droop to the front side of the webbing by gravity.

[0011] In the protective reinforcement device of the multi-point seat belt system of a transportation vehicle as described above, each of the webbing adjustment buckles includes a positioning portion, and the positioning portion includes a frame portion and a cross bar portion arranged in the frame portion, and the width of the space in the frame portion and the length of the cross bar portion match the width of the webbing, so that the webbing can be smoothly passed through the frame portion and wrapped around the cross bar portion, and the top end of the buckle connecting portion is connected to the bottom end of the frame portion.

[0012] In the protection reinforcement device of the multi-point safety belt system of a traffic vehicle as described above, the buckle connection portion and the positioning portion have a step difference, the buckle connection portion is located in front of the webbing, and there is a distance between the buckle connection portion and the webbing.

[0013] In the protection and reinforcement device for the multi-point safety belt system of a traffic vehicle as described above, a non-slip portion is formed on each of the left and right side surfaces of the frame.

[0014] In the protective reinforcement device of the multi-point safety belt system of a traffic vehicle as described above, the first buckle has a first connecting belt and a first fastener connected to one end of the first connecting belt, the other end of the first connecting belt is wrapped around the buckle connecting part at the bottom end of the webbing adjustment buckle, and the first buckle can rotate at the buckle connecting part; the second buckle has a second connecting belt and a second fastener connected to one end of the second connecting belt, the other end of the second connecting belt is wrapped around the buckle connecting part at the bottom end of another webbing adjustment buckle, and the second buckle can rotate at the buckle connecting part, and the first fastener and the second fastener are a male fastener and a female fastener that can be relatively fastened.

[0015] In the protective reinforcement device of the multi-point safety belt system of a transportation vehicle as described above, the first connecting belt and the second connecting belt are both fixed-length belts; or, the first connecting belt and the second connecting belt are both long strips equipped with an adjustment positioning piece to form a belt with a length adjustment function; or, one of the first connecting belt and the second connecting belt is a fixed-length belt, and the other of the first connecting belt and the second connecting belt is a long strip equipped with an adjustment positioning piece to form a belt with a length adjustment function.

[0016] The present invention uses the overall structure of the aforementioned protection reinforcement device to apply it to a multi-point safety belt system at a seat of a transportation vehicle. In addition to providing a safety protection function by having two webbings connected to the webbing retractor respectively wound around the left and right sides of the user's body on the seat, the protection reinforcement device can at least enhance the following beneficial effects on the multi-point safety belt system:

[0017] 1. Provide auxiliary safety protection and reinforcement functions for the multi-point safety belt system: The protection reinforcement device of the present invention utilizes the first buckle and the second buckle to be respectively arranged on the left and right webbings of the multi-point safety belt system by means of two webbing adjustment buckles, so that the first buckle and the second buckle are relatively buckled and laterally connected between the two webbings, thereby providing reinforcement for the two webbings; and the first buckle and the second buckle after being relatively buckled can be horizontally placed in front of the chest of the user's body. When the traffic vehicle decelerates or brakes urgently, the webbing retractor retracts the two webbings of the user's body on the seat. When the user of the seat moves forward due to the inertia force, the distance between the two webbings is limited by the protection reinforcement device connected to the protection reinforcement device, and the protection reinforcement device is horizontally placed in front of the chest of the user's body, so that the upper body of the user's body will not slide over the webbings on the left and right sides and move forward tiltingly between the two webbings. Therefore, the protection reinforcement device of the present invention can indeed provide excellent auxiliary safety protection performance and reinforcement performance in the multi-point safety belt system.

[0018] 2. Possessing height adjustment function: As mentioned above, the protection reinforcement device of the present invention utilizes the first buckle and the second buckle to be respectively arranged on the left and right webbings of the multi-point safety belt system by means of two webbing adjustment buckles. The two webbing adjustment buckles can be respectively moved and positioned on the two webbings, so that the user can adjust the height positions of the first buckle and the second buckle on the two webbings according to his / her body shape, so that the protection reinforcement device can provide auxiliary safety protection function at an appropriate position that matches the body shape of the user on the seat.

[0019] 3. Reduce interference with the user's movements: When the first buckle and the second buckle of the protective reinforcement device of the present invention are disengaged from the buckled state, the first buckle and the second buckle can naturally rotate and droop to the front side of the webbing at the buckle connecting portion of the first adjustment buckle and the buckle connecting portion of the second adjustment buckle respectively by gravity, thereby making the first protective component and the second protective component respectively located at the front side of the two webbings, thereby reducing interference with the user's movements.

[0020] The protection reinforcement device of the multi-point safety belt system of the traffic vehicle of the present invention can further utilize the buckle connection parts of the two webbing adjustment buckles on the two webbings to form an arc-shaped guide section at least on the opposite side, and the first buckle and the second buckle are respectively movably connected to the arc-shaped guide sections of the two webbing adjustment buckles, and the first buckle and the second buckle can be naturally rotated and drooped in the arc-shaped guide sections of the two webbing adjustment buckles by gravity. And by the arc shape of the arc-shaped guide section, the interference between the first buckle and the second buckle when rotating is reduced, and the smoothness of the first buckle and the second buckle when rotating and drooping naturally by gravity is improved.

[0021] The protection reinforcement device of the multi-point safety belt system of a traffic vehicle of the present invention can further utilize that each of the webbing adjustment buckles includes a positioning portion, the positioning portion includes a frame portion and a crossbar portion disposed in the frame portion, and the webbing can be smoothly passed through the frame portion and wound around the crossbar portion, and the top end of the buckle connection portion is connected to the bottom end of the frame portion. In this way, the user can easily adjust the height position of the first buckle and the second buckle on the webbing, and the flatness of the webbing can be maintained.

[0022] The protective reinforcement device of the multi-point safety belt system of a traffic vehicle of the present invention can further utilize a difference between the buckle connection part and the positioning part. The buckle connection part is located in front of the webbing and has a spacing, providing appropriate activity space for the first buckle and the second buckle respectively; a circular hole is formed in the buckle connection part, and the outer peripheral surface of the lower section of the buckle connection part forms an arc surface. In this way, after the first buckle and the second buckle are movably connected to the buckle connection part at the bottom end of the webbing adjustment buckle on the two webbings, the smoothness of the first buckle and the second buckle when rotating at the buckle connection part can be improved, and the interference of the webbing adjustment buckle and the webbing on the first buckle and the second buckle when rotating can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of an embodiment of the protective reinforcement device of the present invention applied to a four-point safety belt system on a seat of a transportation vehicle.

[0024] Figure 2 yes Figure 1 The embodiment of the protective reinforcement device shown is a partial enlarged view of the connection between the left and right side webbings of a four-point safety belt system.

[0025] Figure 3 It is a schematic diagram of another embodiment of the protective reinforcement device of the present invention applied to a four-point safety belt system on a seat of a transportation vehicle.

[0026] Figure 4 It is a schematic diagram of an embodiment of the protective reinforcement device of the present invention applied to a five-point safety belt system on a seat of a transportation vehicle.

[0027] Figure 5 yes Figures 1 to 4 A three-dimensional schematic diagram of the webbing adjustment buckle in the embodiment of the protective reinforcement device is shown.

[0028] Figure 6 yes Figures 1 to 4 A side plan view of a webbing adjustment buckle in an embodiment of a protective reinforcement device is shown.

[0029] Figure 7 It is a plan view of another embodiment of the webbing adjustment buckle in the protective reinforcement device embodiment of the present invention.

[0030] Figure 8 It is a plan view of another embodiment of the webbing adjustment buckle in the protective reinforcement device embodiment of the present invention.

[0031] Fig. 9 yes Figure 1 The embodiment of the protection reinforcement device shown is applied to a four-point safety belt system on a seat of a transportation vehicle, and is a schematic diagram of the protection reinforcement device in a state where the first belt buckle and the second belt buckle are in a released state.

[0032] Brief description of the figures:

[0033] 1: Protective reinforcement device

[0034] 10:Webbing adjustment buckle

[0035] 11: Buckle connection

[0036] 111: Curved guide section

[0037] 12: Positioning unit

[0038] 121: Frame

[0039] 122: Crossbar

[0040] 123: Anti-slip part

[0041] 20: Buckle assembly

[0042] 21: First Buckle

[0043] 211: First connecting belt

[0044] 212: First fastener

[0045] 213: Adjust the positioning piece

[0046] 22: Second buckle

[0047] 221: Second connecting belt

[0048] 222: Second fastener

[0049] A: Four-point safety belt system

[0050] A1: Five-point safety belt system

[0051] 2: Ribbon

[0052] 2A: Auxiliary webbing

[0053] 3: Webbing retractor

[0054] 4:Chair buckle assembly

[0055] 4A:Chair buckle assembly

[0056] 41: Seat buckle

[0057] 42: Tongue

[0058] 5: Connecting components DETAILED DESCRIPTION

[0059] The following is a further description of the technical means adopted by the present invention to achieve the predetermined purpose of the invention with reference to the accompanying drawings and embodiments of the present invention.

[0060] like Figure 1 , Figure 3 and Figure 4 As shown, it discloses several embodiments of the protection reinforcement device 1 of the multi-point safety belt system of the transportation vehicle of the present invention. The protection reinforcement device 1 is used in the multi-point safety belt system on the seat of the transportation vehicle, wherein: Figure 1 and Figure 3 The multi-point seat belt system shown is a four-point seat belt system A. Figure 4 The multi-point safety belt system shown is a five-point safety belt system A1. The multi-point safety belt system may also be a six-point safety belt system or a seven-point safety belt system, etc., and is not limited to a four-point or five-point safety belt system.

[0061] like Figure 1 , Figure 3 and Figure 4 As shown, it discloses respectively embodiments of the multi-point safety belt system as a four-point safety belt system A and a five-point safety belt system A1, which include two webbings 2, one or two webbing retractors 3 and a chair buckle assembly 4, 4A, wherein the two webbings 2 are located on the left and right sides of the seat, and the webbing retractor 3 can be installed on the top or back of the seat back or the rear of the seat back, etc., one end of the two webbings 2 is commonly connected to the one webbing retractor 3, or one end of the two webbings 2 is respectively connected to the two webbing retractors 3, and the other ends of the two webbings 2 are respectively combined with a connecting member 5 and arranged on the left and right sides of the seat cushion of the seat.

[0062] like Figure 1 and Fig. 9As shown, when the multi-point safety belt system is a four-point safety belt system A, the seat buckle assembly 4 includes a seat buckle 41 and a tongue 42. The seat buckle 41 and the tongue 42 are respectively movably arranged on the two webbings 2. The tongue 42 can be arranged in the seat buckle 41 to be locked and unlocked. When the user sits on the seat of the vehicle, the two webbings 2 can be respectively wound around the left and right sides of the front side of the user's body, and the seat buckle 41 and the tongue 42 of the two webbings 2 are relatively locked. After the locking, the seat buckle assembly 4 is located on the front side of the abdomen of the user's body, so that the two webbings 2 are wound around the user's body to form four positioning points.

[0063] like Figure 4 As shown, the five-point safety belt system A1 or the six-point or seven-point safety belt system is based on the basic structure of the four-point safety belt system A (such as Figure 1 , 3 As shown in the figure, by adding at least one auxiliary webbing 2A to the combined structure of the seat buckle assembly 4A, the structure of the seat buckle assembly 4A is known. Among them, the seat buckle assembly 4A includes a seat buckle and two tongues. The seat buckle is arranged on the auxiliary webbing 2A. The two tongues are movably arranged on the two webbings 2 respectively. The two tongues can be arranged in the seat buckle to be locked and unlocked. When the user sits on the seat of the transportation vehicle, the two webbings 2 can be respectively wrapped around the left and right sides of the front side of the user's body, and the two tongues of the two webbings 2 are relatively locked with the seat buckle. After locking, the seat buckle assembly 4A is located on the front side of the abdomen of the user's body, so that the two webbings 2 combined with the auxiliary webbing 2A are wrapped around the user's body to form a safety protection performance with more positioning points.

[0064] like Figures 1 to 4 As shown, the protective reinforcement device 1 of the present invention can be connected between the two webbings 2 of the multi-point safety belt system A, A1, and the protective reinforcement device 1 includes two webbing adjustment buckles 10 and a buckle assembly 20, and its specific structure is described in detail below.

[0065] like Figures 1 to 5 As shown, the two webbing adjustment buckles 10 can be respectively installed on the two webbings 2 to adjust the height and position. The bottom end of each webbing adjustment buckle 10 has a buckle connection part 11, and the buckle connection part 11 is located in front of the webbing 2. There is a distance between the buckle connection part 11 and the webbing 2. Figure 2 and Figure 5 As shown, the buckle connecting portion 11 of the two webbing adjustment buckles 10 forms an arc guide section 111 at least on one opposite side.

[0066] like Figures 1 to 5As shown, in this embodiment, each of the webbing adjustment buckles 10 includes a positioning portion 12, and the positioning portion 12 includes a frame portion 121 and a crossbar portion 122 disposed in the frame portion 121. The width of the space in the frame portion 121 and the length of the crossbar portion 122 match the width of the webbing 2, so that the webbing adjustment buckle 10 can be assembled on the webbing 2 using the positioning portion 12, and the webbing 2 can be smoothly inserted into the frame portion 121 and wound around the crossbar portion 122, and positioned by the friction resistance between the webbing 2 and the positioning portion 12, and when the webbing 2 is released from the positioning portion 12, the webbing adjustment buckle 10 can be moved along the length direction (up and down direction) of the webbing 2 to freely adjust the height position. Preferably, a concave-convex anti-slip portion 123 is formed on the left and right sides of the frame portion, so that the user can hold the frame portion 121 of the positioning portion 12 to adjust the height position of the webbing adjustment buckle 10 on the webbing 2.

[0067] like Figure 5 to Figure 6 As shown, the top end of the buckle connection part 11 is connected to the bottom end of the frame part 121, and there is a gap between the buckle connection part 11 and the positioning part 12, so that the buckle connection part 11 is located in front of the webbing 2 and there is a distance between the buckle connection part 11 and the webbing 2.

[0068] At Figure 5 , Figure 7 and Figure 8 In the embodiment shown, the buckle connecting portion 11 is a ring body with a semicircular lower section or an elliptical ring body, a circular hole is formed in the buckle connecting portion 11, or a compound hole with a semicircular lower section and a rectangular upper section, or an elliptical hole, and the lower section of the buckle connecting portion 11 forms the curved guide section 111. The above embodiments only disclose several specific feasible forms of the buckle connecting portion 11, and are not limited thereto.

[0069] like Figures 1 to 4 and Fig. 9 As shown, the buckle assembly 20 includes a first buckle 21 and a second buckle 22 that can be relatively buckled and detached. The first buckle 21 and the second buckle 22 are respectively movably assembled to the buckle connecting portion 11 at the bottom of the two webbing adjustment buckles 10, so that the protective reinforcement device 1 of the present invention can be connected between the two webbings 2 by the first buckle 21 and the second buckle 22 of the buckle assembly 20 being relatively buckled. Fig. 9 As shown, when the first buckle 21 and the second buckle 22 are released from the buckled state, the first buckle 21 and the second buckle 22 can naturally rotate and hang down to the front side of the webbing 2 at the buckle connecting part 11 at the bottom end of the webbing adjustment buckle 10 by gravity.

[0070] like Figures 1 to 4 and Fig. 9As shown, the first buckle 21 and the second buckle 22 are respectively movably connected to the curved guide sections 111 of the two webbing adjustment buckles 10. The first buckle 21 and the second buckle 22 can naturally rotate and droop in the curved guide sections 111 of the two webbing adjustment buckles 10 by gravity, and the curved shape of the curved guide sections 111 can reduce the interference between the first buckle 21 and the second buckle 22 when they rotate, thereby improving the smoothness of the first buckle 21 and the second buckle 22 when they naturally rotate and droop by gravity.

[0071] like Figure 1 , Figure 2 , Figure 4 and Fig. 9 As shown, the first buckle 21 has a first connecting belt 211 and a first fastener 212 connected to one end of the first connecting belt 211, and the other end of the first connecting belt 211 is wound around the buckle connection part 11 at the bottom end of the webbing adjustment buckle 10, so that the first buckle 21 can rotate at the buckle connection part 11. The second buckle 22 has a second connecting belt 221 and a second fastener 222 connected to one end of the second connecting belt 221, and the other end of the second connecting belt 221 is wound around the buckle connection part 11 at the bottom end of another webbing adjustment buckle 10, so that the second buckle 22 can rotate at the buckle connection part 11. The first fastener 212 and the second fastener 222 can be selected from male and female fasteners that can be relatively fastened, and the male and female fasteners can be selected from known products, and their specific structures are not repeated.

[0072] like Figure 1 , Figure 2 and Figure 4 As shown, in the first buckle 21 and the second buckle 22, the first connecting belt 211 and the second connecting belt 221 can be fixed-length belts; or the first connecting belt 211 and the second connecting belt 221 are both belts with length adjustment function and provided with adjustment positioning members 213; or Figure 3 As shown, one of the first connecting belt 211 and the second connecting belt 221 is a long belt equipped with an adjustment positioning member 213 to form a belt body with a length adjustment function, and the other is a fixed-length belt body. Wherein, by using either or both of the first connecting belt 211 and the second connecting belt 221 as a belt body with a length adjustment function, different users can adjust the length according to their body shapes.

[0073] like Figure 1 , Figure 2 , Figure 4 and Fig. 9As shown, when the protective reinforcement device 1 of the present invention is applied to a multi-point safety belt system on a seat of a transportation vehicle, taking the application to a four-point safety belt system A or a five-point safety belt system A1 as an example, when the user sits on the seat, the two webbings 2 connected to the webbing retractor 3 are wrapped around the left and right sides of the user's body, and the seat buckle assemblies 4 and 4A are respectively connected to the seat buckles 41 and tongue pieces 42 on the two webbings 2 and locked relative to each other, so that the seat buckle assemblies 4 and 4A after the seat buckles 41 and tongue pieces 42 are locked are located on the front side of the abdomen of the user's body, and then the first buckle 21 and the second buckle 22 of the protective reinforcement device 1 are buckled relative to each other and connected laterally between the two webbings 2, that is, a reinforcement effect is generated between the two webbings 2.

[0074] The first buckle 21 and the second buckle 22 of the protective reinforcement device 1 of the present invention can be respectively assembled on the two webbings 2 by means of the two webbing adjustment buckles 10, so that the user can adjust the height and position of the two webbing adjustment buckles 10 on the two webbings 2 according to his / her body shape. Therefore, the first buckle 21 and the second buckle 22 are relatively buckled and laterally connected between the two webbings 2, and are placed horizontally on the chest of the user's body, providing auxiliary safety protection for the user. When the vehicle decelerates or brakes urgently, the webbing retractor 3 retracts the two webbings 2 wound around the body of the user on the seat. When the user of the seat moves forward due to the inertia force, the protective reinforcement device 1 of the present invention is connected to the distance limit between the two webbings 2 and is placed horizontally to block the chest of the user, so that the upper body of the user will not slide over the webbings 2 on the left and right sides and move forward tilted between the two webbings 2. Therefore, the protective reinforcement device 1 of the present invention can provide excellent auxiliary safety protection performance and reinforcement performance in various multi-point seat belt systems such as the four-point seat belt system A and the five-point seat belt system A1.

[0075] like Figure 1 , Figure 2 and Fig. 9 As shown, when the user on the seat releases the buckled state of the first buckle 21 and the second buckle 22 of the protective reinforcement device 1 of the present invention, the first buckle 21 and the second buckle 22 are respectively movably connected to the buckle connecting portion 11 at the bottom end of the webbing adjustment buckle 10 on the two webbings 2, so that the first buckle 21 and the second buckle 22 can respectively rotate naturally at the buckle connecting portion 11 at the bottom end of the webbing adjustment buckle 10 by gravity and hang down to the front side of the webbing 2, thereby reducing interference with the user's movements.

[0076] Among them, the protective reinforcement device 1 of the present invention further utilizes the buckle connecting portion 11 of the two webbing adjustment buckles 10 assembled on the two webbings 2 to form an arc-shaped guide section 111 on at least one opposite side, and the first buckle 21 and the second buckle 22 are respectively movably connected to the arc-shaped guide sections 111 of the two webbing adjustment buckles 10. The first buckle 21 and the second buckle 22 can naturally rotate and droop in the arc-shaped guide sections 111 of the two webbing adjustment buckles 10 by gravity. The arc shape of the arc-shaped guide section 111 can reduce the interference between the first buckle 21 and the second buckle 22 during rotation, thereby improving the smoothness of the first buckle 21 and the second buckle 22 when they naturally rotate and droop by gravity.

[0077] In addition, the protective reinforcement device 1 of the present invention further utilizes a difference between the buckle connection portion 11 and the positioning portion 12. The buckle connection portion 11 is located in front of the webbing 2 and has a spacing, providing appropriate activity space for the first buckle 21 and the second buckle 22 respectively. In this way, after the first buckle 21 and the second buckle 22 are movably connected to the buckle connection portion 11 at the bottom end of the webbing adjustment buckle 10 on the two webbings 2, the smoothness of the first buckle 21 and the second buckle 22 when rotating at the buckle connection portion 11 can be improved, and the interference of the webbing adjustment buckle 10 and the webbing 2 on the first buckle 21 and the second buckle 22 when rotating can be reduced.

[0078] The above description is only an embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as above by the embodiment, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A protective reinforcement device for a multi-point seat belt system of a transportation vehicle, which can be installed in a multi-point seat belt system on a seat of a transportation vehicle, wherein the multi-point seat belt system can be fixed to the left and right sides of a user's body on the seat with two webbings, and the protective reinforcement device can be connected between the two webbings, characterized in that: The protective reinforcement device comprises: Two webbing adjustment buckles, which can be respectively installed on the two webbings and can adjust the height position and location on the webbings, each of the webbing adjustment buckles has a buckle connection portion at the bottom end, the buckle connection portion is located in front of the webbing, and the buckle connection portions of the two webbing adjustment buckles assembled on the two webbings form an arc guide section at least on one opposite side; and A buckle assembly is detachably connected between two webbing adjustment buckles, and includes a first buckle and a second buckle that can be relatively buckled and detached, the first buckle and the second buckle are respectively movably assembled to the curved guide sections of the buckle connecting parts of the two webbing adjustment buckles, whereby the protective reinforcement device can be connected between the two webbings and placed horizontally on the front side of the user's body by the relative buckling of the first buckle and the second buckle; when the first buckle and the second buckle are unfastened, the first buckle and the second buckle can respectively rotate naturally at the curved guide sections of the two webbing adjustment buckles and droop to the front side of the webbing by gravity.

2. The protection reinforcement device for a multi-point safety belt system of a vehicle according to claim 1, characterized in that: Each of the webbing adjustment buckles includes a positioning portion, which includes a frame portion and a cross bar portion arranged in the frame portion. The width of the space in the frame portion and the length of the cross bar portion match the width of the webbing, so that the webbing can be smoothly passed through the frame portion and wrapped around the cross bar portion. The top end of the buckle connecting portion is connected to the bottom end of the frame portion.

3. The protection reinforcement device for a multi-point safety belt system of a vehicle according to claim 2, characterized in that: There is a step difference between the buckle connection part and the positioning part, the buckle connection part is located in front of the webbing, and there is a distance between the buckle connection part and the webbing.

4. The protection reinforcement device for a multi-point safety belt system of a vehicle according to claim 2, characterized in that: A non-slip portion is formed on the left and right side surfaces of the frame portion.

5. The protection reinforcement device for a multi-point safety belt system of a vehicle according to any one of claims 1 to 4, characterized in that: The first buckle has a first connecting belt and a first buckle connected to one end of the first connecting belt, the other end of the first connecting belt is wound around a buckle connecting portion at the bottom end of the webbing adjustment buckle, and the first buckle can rotate at the buckle connecting portion; The second buckle has a second connecting strap and a second fastener connected to one end of the second connecting strap. The other end of the second connecting strap is wrapped around the buckle connecting part at the bottom end of the other webbing adjustment buckle. The second buckle can rotate at the buckle connecting part. The first fastener and the second fastener are a male fastener and a female fastener that can be fastened relative to each other.

6. The protection reinforcement device for a multi-point safety belt system of a vehicle according to claim 5, characterized in that: The first connecting belt and the second connecting belt are both fixed-length belt bodies.

7. The protection reinforcement device for a multi-point safety belt system of a vehicle according to claim 5, characterized in that: The first connecting belt and the second connecting belt are both long strips equipped with an adjustment and positioning piece to form a belt body with a length adjustment function.

8. The protection reinforcement device for a multi-point safety belt system of a vehicle according to claim 5, characterized in that: One of the first connecting belt and the second connecting belt is a fixed-length belt body, and the other of the first connecting belt and the second connecting belt is a long strip equipped with an adjustment positioning piece to form a belt body with a length adjustment function.

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