Protection reinforcing device of multi-point seat belt system for vehicle

Abstract

To provide a protection reinforcing device of a multi-point seat belt system for a vehicle.SOLUTION: A first belt buckle 21 and a second belt buckle 22 of a buckle unit 20 are movably connected to curved guiding sections of a buckle connection 11 of two webbing adjustment buckles 10, respectively. The first webbing buckle 21 and the second webbing buckle 22 are engaged with each other and transversally connected between two webbings 2 to achieve a reinforcement action, thereby, a protection reinforcing device 1 provide a safety protection effect to a body of a user. When the first belt buckle 21 and the second belt buckle 22 are in an unengaged state, the first belt buckle 21 and the second belt buckle 22 naturally rotate and hang down by gravity at the curved guiding sections of the webbing adjustment buckle 10, so as to be located respectively in front of the webbings 2, thereby, reducing interference with user movements.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a seat belt system, and more particularly to a protective reinforcement device that is applied to multi-point seat belt systems with four or more fixing points in seats of various vehicles, and that improves structural reinforcement, safety, etc. [Background technology]

[0002] Based on high safety requirements for various vehicles, such as off-road vehicles, racing cars or tanks, the seat belt system arranged on the vehicle seat can be a multi-point seat belt system, including 4-point, 5-point, 6-point or 7-point. The user's body can be simultaneously restrained by distributed fixing points to be firmly fixed to the seat. When a sudden external force acts on the vehicle, the multi-point seat belt system provides high safety to the user.

[0003] As various conventionally well-known multi-point seat belt systems applied to vehicle seats, a four-point seat belt system is often used, in which two webbings connected to a webbing winder are wound from the upper end of the seat backrest to the left and right sides of the user's body, respectively, to fix the ends of the two webbings to the left and right sides of the seat cushion, respectively, and a seat buckle and a tongue plate connected to the two webbings are engaged with each other. The buckle unit formed by engaging the seat buckle and the tongue plate with each other is positioned in front of the abdomen of the user, thereby providing high safety protection performance for the user's body at four positioning points of the two webbings. On the other hand, five-point, six-point and seven-point seat belt systems provide high safety protection performance for the user's body through more positioning points in cooperation with the two webbings and the auxiliary webbing, based on the configuration of the four-point seat belt system, by further adding an auxiliary webbing connected to the assembly structure of the buckle unit.

[0004] In the multi-point seat belt system applied to the vehicle seat as described above, two webbings connected to a webbing winder are usually provided with four positioning points on both the left and right sides of the user's body to provide safety protection performance, but the webbing winder that provides the winding force for the two webbings is usually provided above or behind the seat backrest, and the buckle units connected between the two webbings are located in front of the user's abdomen, so the distance from the connection points of the buckle units located on the user's abdomen to the user's shoulders or backrest is long, and when the vehicle is suddenly decelerated or stopped, the webbing of the webbing winder that is wound around the user's body on the seat restrains the user on the seat, but the upper half of the user's body slips through the webbings on both the left and right sides and passes between the two webbings, and is pushed forward by the action of inertia force. Therefore, the protective performance of such a multi-point seat belt system is not sufficient, and further improvement is required. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] U.S. Patent Application Publication No. 2021 / 0206339 [Patent Document 2] U.S. Patent Application Publication No. 2022 / 0219640 [Patent Document 3] U.S. Patent Application Publication No. 2022 / 0219641

[0006] In the vehicle seat assemblies disclosed in the above Patent Documents 1 to 3, a detachable connecting belt is further provided between the left and right webbings in the multipoint seat belt system of the seat, one end of the connecting belt is connected to a fixed portion of one webbing, a buckle member is provided on the other webbing, and the other end of the connecting belt is detachably engaged with the buckle member. According to this configuration, when the vehicle is suddenly decelerated or stopped, the connecting belt is provided between the two webbings wrapped around the left and right sides of the body of the user on the seat, thereby limiting the distance between the two webbings, and since the connecting belt is placed horizontally in front of the user's chest, it is prevented that the upper half of the user's body slips through the left and right webbings and is pushed forward between the two webbings due to the action of inertial force.

[0007] The multi-point seat belt system provided in the vehicle seat described above utilizes a detachable connecting belt connected between two left and right webbings to improve the safety of the multi-point seat belt system in use; however, in this configuration, one end of the connecting belt is connected to a fixed point of one webbing and the other end of the connecting belt can be detachably engaged with a buckle member of the other webbing, but the height position of the connecting belt cannot be adjusted according to the body size of different users on the seat; on the other hand, after the other end of the connecting belt is detached from the buckle member of the other webbing, the one end of the connecting belt is connected to a fixed point of the webbing, so the other end of the connecting belt hangs down; in this case, the connecting belt protrudes to one side of the webbing of the multi-point seat belt system, which tends to interfere with the actions of the user on the seat. Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention aims to provide a protection reinforcement device for a multi-point seat belt system of a vehicle in order to solve problems such as insufficient protective performance and inconvenience during use in conventional multi-point seat belt systems. [Means for solving the problem]

[0009] In order to achieve the above object, the present invention provides a protection reinforcement device for a multi-point seat belt system of a vehicle, the protection reinforcement device for the multi-point seat belt system of the vehicle being installed in a multi-point seat belt system in a vehicle seat, the multi-point seat belt system being wrapped around and fixed to the left and right sides of a user's body on the seat by two webbings, the protection reinforcement device being connected between the two webbings and including two webbing adjustment buckles and a buckle unit, The two webbing adjustment buckles are attached to the two webbings, respectively, and are capable of adjusting and positioning their height positions on the webbings. A buckle connection portion is provided at each bottom end of the webbing adjustment buckle, and the buckle connection portion is located in front of the webbing. An arc-shaped guide portion is formed on at least one opposing side of the buckle connection portion of the two webbing adjustment buckles attached to the two webbings. The buckle unit includes a first belt buckle and a second belt buckle that are removably connected between the two webbing adjustment buckles and are engageable and disengageable with each other, The first belt buckle and the second belt buckle are each dynamically connected to the arc-shaped guide portions of the buckle connection portions of the two webbing adjustment buckles, so that the protection reinforcement device is connected between the two webbings by engaging the first belt buckle and the second belt buckle with each other, and when placed horizontally in front of the user's body and the engagement between the first belt buckle and the second belt buckle is released, the first belt buckle and the second belt buckle naturally rotate and hang down due to gravity from the arc-shaped guide portions of the two webbing adjustment buckles and are positioned in front of the webbing. Effect of the Invention

[0010] According to the overall configuration of the above-mentioned protective reinforcement device for a multi-point seat belt system of a vehicle, by applying it to a multi-point seat belt system in a vehicle seat, not only does the two webbings connected to the webbing winder wrap around both the left and right sides of the body of a user on the seat, providing high protective performance, but the protective reinforcement device also provides at least the following effects to the multi-point seat belt system. 1. It is possible to improve auxiliary safety, protection and reinforcement functions for multi-point seat belt systems. That is, in the protection reinforcement device of the present invention, the first belt buckle and the second belt buckle are attached to the left and right webbings of the multipoint seat belt system via two webbing adjustment buckles, and the first belt buckle and the second belt buckle are engaged with each other and connected laterally between the two webbings, thereby providing a reinforcing effect for the two webbings, and further, since the first belt buckle and the second belt buckle engaged with each other are placed laterally in front of the user's chest, when the vehicle is suddenly decelerated or stopped, even if the webbing take-up device takes up the two webbings wound around the body of the user on the seat and the user on the seat is pushed forward by the action of inertia, the upper half of the user's body is prevented from slipping through the webbings on both the left and right sides and being pushed forward between the two webbings because the protection reinforcement device is placed laterally in front of the user's chest. Therefore, the protection reinforcement device of the present invention can reliably provide excellent auxiliary safety, protection, and reinforcement functions in the multipoint seat belt system. 2.Has height adjustment function. As described above, the protective reinforcement device of the present invention attaches the first belt buckle and the second belt buckle to the left and right webbings of the multi-point seat belt system via two webbing adjustment buckles, respectively, so that the two webbing belt adjustment buckles can be movably positioned on the two webbings, allowing the user to adjust the height positions of the first belt buckle and the second belt buckle on the two webbings to suit their own body type, thereby providing excellent auxiliary safety and protection at an appropriate position that suits the user's body type. 3. Reduce interference with user activities. When the protective reinforcement device of the present invention releases the engagement between the first belt buckle and the second belt buckle, the first belt buckle and the second belt buckle naturally rotate and hang down due to gravity from the buckle connection portion of the first belt buckle and the buckle connection portion of the second belt buckle, respectively, and are positioned in front of the webbing, thereby reducing interference with the user's movements.

[0011] In the protection and reinforcement device for a multi-point seat belt system of a vehicle according to the present invention, an arc-shaped guide portion is further formed on at least one opposing side of the buckle connection portion of the webbing adjustment buckle attached to the two webbings, and the first belt buckle and the second belt buckle are dynamically connected to the arc-shaped guide portions of the two webbing adjustment buckles, respectively, so that they naturally rotate and hang down at the arc-shaped guide portions of the webbings due to gravity. In addition, the arc-shaped form of the arc-shaped guide portion reduces interference when the first belt buckle and the second belt buckle rotate, allowing them to naturally rotate and hang down smoothly.

[0012] In the protection and reinforcement device for a multi-point seat belt system of a vehicle according to the present invention, a positioning portion is provided for each webbing adjustment buckle, and the positioning portion includes a frame portion and a horizontal rod portion provided within the frame portion, and the webbing is passed flat through the frame portion and wound around the horizontal rod portion, and the top end of the buckle connection portion is connected to the bottom end of the frame portion, which makes it easier for a user to adjust the height positions of the first belt buckle and the second belt buckle in the webbing, and also makes it possible to maintain the flatness of the webbing.

[0013] In the protection and reinforcement device for a multi-point seat belt system of a vehicle according to the present invention, a step is further provided between the buckle connection portion and the positioning portion, the buckle connection portion is located in front of the webbing and has a pitch between it and the webbing 2, providing an appropriate movement space for the first and second belt buckles, a circular hole is further formed in the buckle connection portion, and an arc-shaped surface is formed on the outer circumferential surface of the lower part of the buckle connection portion. With this configuration, the first and second belt buckles are dynamically connected to the buckle connection portion at the bottom ends of the webbing adjustment buckles of the two webbings, so that the smoothness of the rotation of the buckle connection portion can be improved, and interference between the webbing adjustment buckle and the webbing relative to the first and second belt buckles can be reduced. [Brief description of the drawings]

[0014] [Figure 1] 1 is a schematic diagram showing a state in which one embodiment of a protective reinforcement device of the present invention is applied to a four-point seat belt system in a vehicle seat. [Diagram 2] 2 is a partially enlarged view showing the state in which the embodiment of the protection reinforcement device of the present invention shown in FIG. 1 is connected between the webbings on both the left and right sides of a four-point seat belt system. [Diagram 3] 10 is a schematic diagram showing a state in which another embodiment of the protection reinforcement device of the present invention is applied to a four-point seat belt system in a vehicle seat. FIG. [Figure 4]1 is a schematic diagram showing an embodiment of a protective reinforcement device of the present invention applied to a five-point seat belt system in a vehicle seat. [Diagram 5] FIG. 5 is a schematic perspective view of a webbing adjustment buckle in the embodiment of the protection reinforcement device of the present invention shown in FIGS. 1 to 4. [Figure 6] FIG. 5 is a schematic side view of a webbing adjustment buckle in the embodiment of the protection reinforcement device of the present invention shown in FIGS. 1 to 4. [Figure 7] 13 is a schematic plan view of another embodiment of a webbing adjustment buckle in the embodiment of the protection reinforcement device of the present invention. FIG. [Figure 8] 13 is a schematic plan view of another embodiment of a webbing adjustment buckle in the embodiment of the protection reinforcement device of the present invention. FIG. [Figure 9] FIG. 2 is a schematic diagram showing the state in which the first belt buckle and the second belt buckle are disengaged when the embodiment of the protective reinforcement device of the present invention shown in FIG. 1 is applied to a four-point seat belt system in a vehicle seat. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] 1, 3, and 4 respectively show several embodiments of the protection reinforcement device 1 for a multi-point seat belt system of a vehicle according to the present invention, according to which the protection reinforcement device 1 is used for a multi-point seat belt system of a vehicle, among which the multi-point seat belt system shown in Fig. 1 and Fig. 3 is a four-point seat belt system A, and the multi-point seat belt system shown in Fig. 4 is a five-point seat belt system A1. Note that the multi-point seat belt system may be a six-point seat belt system or a seven-point seat belt system, etc., and is not limited to a four-point or five-point seat belt system.

[0016] As shown in Figures 1, 3 and 4, each of the multi-point seat belt systems includes two webbings 2, one or two webbing reels 3, and a seat buckle member 4 or 4A, the two webbings 2 are located on both the left and right sides of the seat, the webbing reel 3 is provided on the upper or underside of the seat backrest, or behind the seat backrest, and one ends of the two webbings 2 are both connected to the single webbing reel 3, or one ends of the two webbings are each connected to the two webbing reels 3, and the other ends of the two webbings 2 are coupled to connecting members 5 provided on both the left and right sides of the seat cushion.

[0017] 1 and 9, when the multi-point seat belt system is a four-point seat belt system A, the seat buckle member 4 includes a seat buckle 41 and a tongue plate 42, the seat buckle 41 and the tongue plate 42 are movably provided on the two webbings 2, and the tongue plate 42 is removably engaged so as to be inserted into the seat buckle 41. That is, after a user sits on a seat of a vehicle, the two webbings 2 are wrapped around the left and right sides of the front side of the user's body, respectively, and the engaged seat buckle member 4 is positioned in front of the abdomen of the user due to the engagement of the seat buckle 41 and the tongue plate 42 of the two webbings 2, and the two webbings 2 are wrapped around the user's body to be positioned at four positioning points.

[0018] 4 shows a five-point seat belt system A1 or a six-point or seven-point seat belt system in which at least one auxiliary webbing 2A connected to a seat buckle member 4A is further added based on the configuration of the four-point seat belt system A (shown in FIGS. 1 and 3), but the configuration of the seat buckle member 4A is conventional. That is, the seat buckle member 4A includes one seat buckle and two tongue plates, the seat buckle is provided on the auxiliary webbing 2A, and the two tongue plates are movably provided on the two webbings 2, respectively, and are removably engaged in the seat buckle. As a result, when a user is seated on a seat of a vehicle, the two webbings 2 are wrapped around the left and right sides of the front of the user's body, respectively, and the two tongue plates of the two webbings 2 engage with the seat buckle, so that the engaged seat buckle member 4A is positioned in front of the user's abdomen, and the two webbings 2 are connected to the auxiliary webbing 2A and wrapped around the user's body, increasing the number of positioning points and improving the safety protection function.

[0019] 1 to 4, the protection reinforcement device 1 of the present invention is connected between the two webbings 2 in the multipoint seat belt system A, A1, and includes two webbing adjustment buckles 10 and one buckle unit 20. The specific configuration will be described in detail below.

[0020] 1 to 5, the two webbing adjustment buckles 10 are respectively provided on the two webbings 2, and are capable of adjusting their height positions and positioning, and a buckle connection portion 11 is provided at each bottom end of the webbing adjustment buckles 10, and the buckle connection portion 11 is located in front of the webbing 2 so as to have a pitch between it and the webbing 2. In addition, as shown in Figs. 2 and 5, an arc-shaped guide portion 111 is formed on at least one opposing side of the buckle connection portions 11 of the two webbing adjustment buckles 10.

[0021] 1 to 5, 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 horizontal rod portion 122 provided within the frame portion 121, and the width within the frame portion 121 and the length of the horizontal rod portion 122 match the width of the webbing 2, whereby the webbing adjustment buckle 10 is provided to the webbing 2 via the positioning portion 12, and the webbing 2 passes flat through the frame portion 121 and is wound around the horizontal rod portion 122, and the webbing 2 is positioned by the frictional force with the positioning portion 12. According to this configuration, when the webbing 2 is released from the positioning portion 12, the webbing adjustment buckle 10 moves along the length direction (up and down direction) of the webbing 2, and the height position can be freely adjusted. In addition, preferably, uneven anti-slip portions 123 are formed on both left and right side surfaces of the frame portion 121, so that a user can grip the frame portion 121 of the positioning portion 12 to adjust the height position of the webbing adjustment buckle 10 in the webbing 2.

[0022] As shown in Figures 5 and 6, the top end of the buckle connection portion 11 is connected to the bottom end of the frame portion 121, and a step is provided between the buckle connection portion 11 and the positioning portion 12, so that the buckle connection portion 11 is located in front of the webbing 2 and has a pitch between the buckle connection portion 11 and the webbing 2.

[0023] In the embodiments shown in Figures 5, 7 and 8, the buckle connection part 11 is a ring body with a semicircular or elliptical lower part, a circular hole is formed in the buckle connection part 11, or a compound hole with a semicircular lower half and a rectangular upper half, and an arc-shaped guide part 111 is formed in the lower half of the buckle connection part 11. The above embodiments merely show some embodiments of the buckle connection part 11, and the present invention is not limited thereto.

[0024] 1 to 4 and 9, the buckle unit 20 includes a first belt buckle 21 and a second belt buckle 22 that are detachably engaged with each other, and the first belt buckle 21 and the second belt buckle 22 are dynamically connected to the buckle connection portion 11 at the bottom end of the two webbing adjustment buckles 10, respectively, and the protection reinforcement device 1 of the present invention is connected between the two webbings 2 by the engagement of the first belt buckle 21 and the second belt buckle 22 of the buckle unit 20. Also, as shown in FIG. 9, when the engagement state between the first belt buckle 21 and the second belt buckle 22 is released, the first belt buckle 21 and the second belt buckle 22 naturally rotate and hang down due to gravity from the buckle connection portion 11 at the bottom end of the webbing adjustment buckle 10, respectively, and are positioned in front of the webbing.

[0025] As shown in Figures 1 to 4 and 9, the first belt buckle 21 and the second belt buckle 22 are respectively connected to the arc-shaped guide portions 111 of the two webbing adjusting buckles 10, and naturally rotate and hang down from the arc-shaped guide portions 111 of the two webbing adjusting buckles 10 due to gravity. In addition, the arc-shaped form of the arc-shaped guide portions 111 reduces interference between the first belt buckle 21 and the second belt buckle 22 when they rotate, thereby improving the smoothness of the first belt buckle 21 and the second belt buckle 22 when they naturally rotate and hang down due to gravity.

[0026] 1, 2, 4 and 9, the first belt buckle 21 has a first connecting belt 211 and a first buckle member 212 connected to one end of the first connecting belt 211, and the other end of the first connecting belt 211 is wound around a buckle connection portion 11 at the bottom end of the webbing adjustment buckle 10, so that the first belt buckle 21 can rotate at the buckle connection portion 11. The second belt buckle 22 has a second connecting belt 221 and a second buckle member 222 connected to one end of the second connecting belt 221, and the other end of the second connecting belt 221 is wound around a buckle connection portion 11 at the bottom end of the other webbing adjustment buckle 10, so that the second belt buckle 22 can rotate at the buckle connection portion 11. The first buckle member 212 and the second buckle member 222 may use male and female buckles that are engageable with each other. However, since these male and female buckles are conventional, a description of their specific configuration will be omitted.

[0027] As shown in Fig. 1, Fig. 2 and Fig. 4, in the first belt buckle 21 and the second belt buckle 22, the first connection belt 211 and the second connection belt 221 may be belts having a predetermined length, or may be length-adjustable belts provided with a positioning adjustment member. As shown in Fig. 3, one of the first connection belt 211 and the second connection belt 221 is provided with a positioning adjustment member 213 to configure a length-adjustable belt, and the other is a belt having a predetermined length. In addition, one or two of the first connection belt 211 and the second connection belt 221 may be belts having a length adjustment function, so that the length of the belt can be adjusted to suit different body types of users.

[0028] As shown in Figures 1, 2, 4 and 9, when the protective reinforcement device 1 of the present invention is applied to a multi-point seat belt system in a vehicle seat, taking a four-point seat belt system A or a five-point seat belt system A1 as an example, after a user sits on the seat, two webbings connected to the webbing winder 3 are wound around the left and right sides of the user's body, and the seat buckle 41 connected to the two webbings in the seat buckle members 4, 4A engages with the tongue plate 42, so that the seat buckle members 4, 4A with the seat buckle 41 and tongue plate 42 engaged therewith are positioned in front of the abdomen of the user. When the first belt buckle 21 and the second belt buckle 22 of the protective reinforcement device 1 are engaged with each other and connected laterally between the two webbings, a reinforcing effect is provided between the two webbings.

[0029] In the present invention, the first belt buckle 21 and the second belt buckle 22 of the protection reinforcement device 1 are respectively attached to two webbings via two webbing adjustment buckles 10, and the user adjusts and positions the height positions of the two webbing adjustment buckles 10 on the two webbings 2 according to his / her body type, so that the first belt buckle 21 and the second belt buckle 22 engage with each other and are connected laterally between the two webbings, and are placed horizontally in front of the user's chest, thereby providing an auxiliary safety protection effect for the user. As a result, when the vehicle is suddenly decelerated or stopped, the webbing reel 3 reeles in the two webbings 2 wound around the body of the user on the seat, and even if the user on the seat is pushed forward by the action of inertia, due to the limited distance at which the protection reinforcement device 1 of the present invention is connected to the two webbings 2 and because it is placed horizontally in front of the user's chest, the upper half of the user's body is prevented from slipping through the webbings 2 on both the left and right sides and being pushed forward between the two webbings 2. Therefore, the protective reinforcement device 1 of the present invention can reliably provide excellent auxiliary safety, protective properties and reinforcement functions in various multi-point seat belt systems such as the four-point seat belt system A and the five-point seat belt system A1.

[0030] As shown in Figures 1, 2 and 9, when a user on a seat releases the engagement between the first belt buckle 21 and the second belt buckle 22 of the protective reinforcement device 1 of the present invention, the first belt buckle 21 and the second belt buckle 22 are each dynamically connected to the buckle connection portion 11 at the bottom end of the webbing adjustment buckle 10 of the two webbings 2, and therefore naturally rotate and hang down from the buckle connection portion 11 due to gravity and are positioned in front of the webbing 2, thereby reducing interference with the user's actions.

[0031] In addition, in the protection reinforcement device 1 of the present invention, an arc-shaped guide portion 111 is formed on at least one opposing side of the buckle connection portion 11 of two webbing adjusting buckles 10 provided on two webbings 2, so that the first belt buckle 21 and the second belt buckle 22 are dynamically connected to the arc-shaped guide portion 111 of the two webbing adjusting buckles 10, respectively, and naturally rotate and hang down from the arc-shaped guide portion 111 due to gravity. At the same time, the arc-shaped form of the arc-shaped guide portion 111 reduces interference when the first belt buckle 21 and the second belt buckle 22 rotate, thereby improving the smoothness of the first belt buckle 21 and the second belt buckle 22 when they naturally rotate and hang down due to gravity.

[0032] Furthermore, since the protection reinforcement device 1 of the present invention has a step between the buckle connection portion 11 and the positioning portion 12, the buckle connection portion 11 is positioned in front of the webbing 2 with a pitch between it and the webbing 2, and provides an appropriate movement space for the first belt buckle 21 and the second belt buckle 22. According to this configuration, the first belt buckle 21 and the second belt buckle 22 are dynamically connected to the buckle connection portion 11 at the bottom end of the webbing adjustment buckle 10 of the two webbings 2, so that it is possible to improve the smoothness of the rotation of the buckle connection portion 11 and to reduce interference between the webbing adjustment buckle 10 and the webbing 2 relative to the first belt buckle 21 and the second belt buckle 22.

[0033] The above description is merely an embodiment of the present invention, and does not limit the present invention. The present invention has been described with a relatively preferred embodiment, but this does not limit the present invention, and any simple modifications, equivalent changes and modifications made by those skilled in the art to the above embodiment based on the essence of the technology of the present invention, within the scope of the technical solution of the present invention, are all included in the technical solution of the present invention. [Explanation of symbols]

[0034] 1. Protective reinforcement device 10 Webbing adjustment buckle 11 Buckle connection 111 Arc guide section 12 Positioning section 121 Frame section 122 Horizontal rod section 123 Anti-slip part 20 Buckle unit 21 First Belt Buckle 211 First connecting belt 212 First buckle member 213 Positioning adjustment member 22 Second Belt Buckle 221 Second connecting belt 222 Second buckle member A 4-point seat belt system A1 5-point seat belt system 2. Webbing 2A Auxiliary Webbing 3 Webbing winder 4 Seat buckle member 4A Seat buckle parts 41 Seat buckle 42 Tongue plate 5 Connection parts

Claims

1. A protection reinforcement device for a multi-point seat belt system of a vehicle, the protection reinforcement device being installed in a multi-point seat belt system in a vehicle seat, the multi-point seat belt system being wrapped around and fixed to both the left and right sides of a user's body on the seat by two webbings, the protection reinforcement device being connected between the two webbings and including two webbing adjustment buckles and a buckle unit; the two webbing adjustment buckles are attached to the two webbings, respectively, and are capable of adjusting and positioning their height positions on the webbings; a buckle connection portion is provided at each bottom end of the webbing adjustment buckle, the buckle connection portion is located in front of the webbing, and an arc-shaped guide portion is formed on at least one opposing side of the buckle connection portion of the two webbing adjustment buckles attached to the two webbings; The buckle unit includes a first belt buckle and a second belt buckle that are removably connected between the two webbing adjustment buckles and are engageable and disengageable with each other, a first belt buckle and a second belt buckle that are dynamically connected to the arc-shaped guide portions of the buckle connection portions of the two webbing adjustment buckles, respectively, so that the protection reinforcement device is connected between the two webbings by engaging the first belt buckle and the second belt buckle with each other, and when the protection reinforcement device is placed horizontally in front of a user's body and the engagement between the first belt buckle and the second belt buckle is released, the first belt buckle and the second belt buckle naturally rotate and hang down from the arc-shaped guide portions of the two webbing adjustment buckles due to gravity, and are positioned in front of the webbing.

2. 2. The protection and reinforcement device for a multi-point seat belt system of a vehicle as described in claim 1, characterized in that a positioning portion is provided for each of the webbing adjustment buckles, the positioning portion including a frame portion and a horizontal rod portion provided within the frame portion, the width within the frame portion and the length of the horizontal rod portion being consistent with the width of the webbing, whereby the webbing is passed flat through the frame portion and wrapped around the horizontal rod portion, and the top end of the buckle connection portion is connected to the bottom end of the frame portion.

3. 3. The protection and reinforcement device for a multi-point seat belt system of a vehicle as described in claim 2, characterized in that there is a step between the buckle connection portion and the positioning portion, and the buckle connection portion is located in front of the webbing and has a pitch between the buckle connection portion and the webbing.

4. 3. The protective reinforcement device for a multi-point seat belt system of a vehicle according to claim 2, wherein an anti-slip portion is formed on each of the left and right side surfaces of the frame portion.

5. The first belt buckle has a first connecting belt and a first buckle member connected to one end of the first connecting belt, the other end of the first connecting belt is wound around a buckle connection portion at a bottom end of the webbing adjustment buckle, and the first belt buckle is rotatable at the buckle connection portion; The second belt buckle has a second connecting belt and a second buckle member connected to one end of the second connecting belt, the other end of the second connecting belt is wound around a buckle connection portion at a bottom end of the other webbing adjustment buckle, and the second belt buckle is rotatable at the buckle connection portion; The protection and reinforcement device for a multi-point seat belt system of a vehicle as described in any one of claims 1 to 4, characterized in that the first belt buckle and the second belt buckle are a male buckle and a female buckle that can be engaged with each other.

6. 6. The protection and reinforcement device for a multi-point seat belt system of a vehicle according to claim 5, wherein the first connecting belt and the second connecting belt are belts having a predetermined length.

7. The protection and reinforcement device for a multi-point seat belt system of a vehicle as described in claim 5, characterized in that the first connecting belt and the second connecting belt are elongated belts provided with positioning adjustment members having a length adjustment function.

8. 6. The protection and reinforcement device for a multi-point seat belt system of a vehicle as described in claim 5, characterized in that one of the first connecting belt and the second connecting belt is a belt having a predetermined length, and the other of the first connecting belt and the second connecting belt is an elongated belt provided with a positioning adjustment member having a length adjustment function.

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