Motor vehicle seat with safety belt guide

Abstract

The utility model relates to an automobile seat with a safety belt guiding piece, which comprises the guiding piece arranged on a backrest of the automobile seat, a guiding channel for a safety belt to pass through is formed on the guiding piece, and a retractor of the safety belt is arranged on a B column of an automobile. The guiding piece is arranged on the backrest of the automobile seat, the retractor of the safety belt is arranged on the column B of the automobile, and the safety belt penetrates through the guiding channel of the guiding piece and then is fixed, so that the safety belt can be more fit with the posture of a human body at different backrest angles, and effective protection is provided for passengers; and the retractor of the safety belt is arranged on the B column of the automobile, so that the weight of the seat framework can be reduced, and the cost of the seat is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of safety belts, in particular to a car seat with a safety belt guide. Background Art

[0002] The seat belt retractor of an ordinary car seat is arranged on the B-pillar. When the car seat backrest is turned to a certain angle, the gap between the seat belt and the occupant's body is larger, and the protective performance of the seat belt will be greatly reduced.

[0003] ABTS (All Belt To Seat) seats, where the seat belt fixing points are all on the seat, can provide more effective protection for passengers by implementing a seat belt locking function that better fits the human body posture at different seat back angles through a retractor fixed on the seat back. However, in the event of a frontal collision, ABTS seats require high frame performance requirements due to the large amount of energy that the backrest needs to absorb, resulting in a heavy frame assembly and high seat cost. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects of the prior art and provide a car seat with a safety belt guide to solve the problems that the protective performance of the safety belt is greatly reduced after the existing ordinary car seat is turned to a certain angle, and the ABTS seat has high requirements on the frame performance, the frame assembly is heavy, and the seat cost is high.

[0005] The technical solution to achieve the above purpose is:

[0006] The utility model provides a car seat with a safety belt guide, comprising:

[0007] A guide member is arranged on the backrest of the automobile seat, and a guide channel for the safety belt to pass through is formed on the guide member. The retractor of the safety belt is arranged on the B-pillar of the automobile.

[0008] A further improvement of the automobile seat with a safety belt guide member of the utility model is that the guide member is rotatably mounted on the shoulder of the backrest.

[0009] A further improvement of the automobile seat with a safety belt guide member of the utility model is that the guide channel is arranged vertically.

[0010] A further improvement of the automobile seat with a safety belt guide member of the utility model is that the guide member comprises a guide bracket and a guide roller rotatably mounted on the guide bracket; the inner side surface of the guide bracket and the guide roller enclose to form the guide channel.

[0011] A further improvement of the automobile seat with a safety belt guide member of the utility model is that both ends of the guide roller are rotatably mounted on the guide bracket through bearings.

[0012] A further improvement of the automobile seat with a safety belt guide of the utility model is that the guide bracket comprises a side wall and an upper flange portion bent outward along the top end of the side wall, and the connection between the upper flange portion and the side wall is arc-shaped.

[0013] A further improvement of the automobile seat with a safety belt guide member of the utility model is that the guide roller is a cylindrical structure with a hollow interior, a sleeve is inserted into the guide roller, and the sleeve is rotatably mounted on the guide bracket;

[0014] The guide roller and the sleeve are rotatable relative to the guide bracket.

[0015] A further improvement of the automobile seat with a safety belt guide member of the utility model is that two ends of the guide roller are provided with guide parts whose size is larger than the middle part.

[0016] A further improvement of the automobile seat with a safety belt guide member of the utility model is that the connection strength between the guide member and the backrest is adapted to the pulling force to which the automobile seat is subjected when the automobile collides.

[0017] A further improvement of the automobile seat with a safety belt guide member of the utility model is that it also includes an energy absorbing structure arranged on the automobile seat, and the energy absorbing structure is controllably connected with the backrest rotation driving mechanism of the automobile seat.

[0018] The beneficial effects of the automobile seat with a safety belt guide member of the utility model are as follows:

[0019] The utility model provides a guide member on the backrest of the automobile seat, and the seat belt retractor is arranged on the B-pillar of the automobile. The seat belt passes through the guide channel of the guide member and is then fixed, so that the seat belt can better fit the human body posture at different backrest angles, providing effective protection for the occupant. Moreover, the seat belt retractor is arranged on the B-pillar of the automobile, which can reduce the weight of the seat frame and thus reduce the cost of the seat.

[0020] The utility model can realize the function of the ABTS seat and achieve a large-angle rearward tilt mode under the premise of ensuring safety.

[0021] The guide member in the utility model is rotatably arranged on the shoulder of the backrest of the automobile seat, so that the guide member can adapt to the direction of the safety belt by rotating, and will not cause improper obstruction to the safety belt.

[0022] The guide member of the utility model is provided with a rotatable guide roller, which can reduce the contact friction between the guide roller and the safety belt by rotating, reduce the resistance to the safety belt, and the contact between the guide roller and the safety belt is smooth, which also protects the safety belt. The end of the guide roller is provided with a guide part, which can prevent the safety belt from getting stuck in the gap between the guide roller and the guide bracket.

[0023] The guide member in the utility model is provided with an arc surface on one side relative to the guide roller, and contacts the safety belt smoothly, thereby protecting the safety belt and avoiding damage to the safety belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The utility model is a schematic structural diagram of a car seat with a safety belt guide and a B-pillar.

[0025] Figure 2 The utility model is a schematic structural diagram of the upper part of the automobile seat with a safety belt guide.

[0026] Figure 3 The utility model is a schematic diagram of the assembly relationship between the guide member and the backrest of the automobile seat with the safety belt guide member.

[0027] Figure 4 The utility model is a cross-sectional view of the guide member of the automobile seat with the safety belt guide member.

[0028] Figure 5 The utility model is a schematic diagram of the exploded structure of the guide member of the automobile seat with the safety belt guide member.

[0029] Figure 6 This is a rendering of the guide member of the automobile seat with the safety belt guide member behind the B-pillar according to the present invention.

[0030] Figure 7 This is a rendering of the guide member of the automobile seat with the safety belt guide member in front of the B-pillar according to the present invention.

[0031] Figure 8 The utility model is a structural schematic diagram of the guide member of the automobile seat with the safety belt guide member behind the B-pillar in a normal working state.

[0032] Fig. 9 This is a structural schematic diagram of the guide member of the automobile seat with a safety belt guide member of the utility model rotating with the automobile seat to be close to the B-pillar in the early stage of a collision.

[0033] Fig.10 The utility model is a structural schematic diagram of the guide member of the automobile seat with the safety belt guide member in front of the B-pillar in the late stage of the collision.

[0034] Fig.11 for Figure 8Side view of the status shown.

[0035] Fig.12 for Fig. 9 Side view of the status shown.

[0036] Fig.13 for Fig.10 Side view of the status shown.

[0037] Fig.14 for Fig.11 A cross-sectional view of the connection between the guide member and the safety belt in the structure shown.

[0038] Fig.15 for Fig.12 A cross-sectional view of the connection between the guide member and the safety belt in the structure shown.

[0039] Fig.16 for Fig.13 A cross-sectional view of the connection between the guide member and the safety belt in the structure shown.

[0040] Explanation of the reference numerals: 10, backrest; 11, mounting hole; 12, B-pillar; 13, seat belt; 21, guide piece; 211, guide channel; 212, guide bracket; 2121, side wall; 2122, upper flange portion; 2123, lower flange portion; 2124, connecting portion; 2125, axial hole; 2126, connecting hole; 213, guide roller; 2131, guide portion; 214, bearing; 215, sleeve; 216, block; 22, bolt; 23, bushing; 24, energy absorption structure. DETAILED DESCRIPTION

[0041] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0042] See also Figure 1 The utility model provides a car seat with a seat belt guide, which is used to solve the problem that in ordinary car seats, since the seat belt retractor is arranged on the B-pillar, when the backrest is turned to a certain angle, the gap between the seat belt and the occupant is wide, which greatly reduces the protection performance; it is also used to solve the problem that the ABTS seat has a high requirement on the skeleton performance due to the large energy that the backrest needs to absorb, which leads to the problem of heavy skeleton assembly and high seat cost. The car seat with a seat belt guide of the utility model is provided with a guide on the backrest of the car seat, so that the seat belt retractor is arranged on the B-pillar, and then the seat belt is extended from the B-pillar and bypasses the guide on the backrest of the car seat before being fixed, so that the car seat can achieve a large angle rearward tilt mode under the premise of ensuring safety. In addition, the seat belt retractor is arranged on the B-pillar, which can effectively reduce the weight of the skeleton, thereby reducing the cost of the seat. The car seat with a seat belt guide of the utility model is explained below in conjunction with the accompanying drawings.

[0043] See also Figure 1 , showing the structural schematic diagram of the automobile seat and B-pillar with the safety belt guide of the utility model. Figure 2 , showing a schematic diagram of the upper structure of a car seat with a safety belt guide according to the utility model. Figure 1 and Figure 2 , the automobile seat with a safety belt guide of the utility model is described.

[0044] like Figure 1 and Figure 2 As shown, the automobile seat with a safety belt guide of the utility model includes a guide member 21, which is arranged on the backrest 10 of the automobile seat. A guide channel 211 for the safety belt to pass through is formed on the guide member 21, and the retractor of the safety belt 13 is arranged on the B-pillar 12 of the automobile.

[0045] Furthermore, if Figure 2 As shown, the guide member 21 is rotatably mounted on the shoulder of the backrest 10. The car seat includes a seat cushion and a backrest 10. The backrest 10 can be rotated and adjusted relative to the seat cushion. The middle area of ​​the top of the backrest 10 is connected to a headrest, and the two sides of the top of the backrest 10 are shoulders. When the guide member 21 is set, the guide member 21 is set on the shoulder of the backrest 10 on the side close to the seat belt retractor.

[0046] Furthermore, the guide channel 211 is vertically arranged, and the guide channel 211 is a vertically penetrating channel, having an upper opening and a lower opening, Figures 8 to 10 As shown, the safety belt 13 passes through the guide channel 211 of the guide member 21 from the fixed point of the B-pillar 12, the safety belt 13 extends from the upper opening of the guide channel 211, and then extends from the lower opening, and then the safety belt 13 passes around the body of the occupant and is fixedly connected to the fixed point next to the car seat.

[0047] Combination Figure 6 and Figure 8 As shown, due to the setting of the guide member 21, when the backrest of the automobile seat 10 is adjusted to a rearward tilted state, the guide member 21 is located at the rear of the B-pillar 12. At this time, the safety belt 13 can still be tightly attached to the occupant's body, thereby providing effective protection for the occupant.

[0048] Furthermore, if Figure 2 As shown, the guide member 21 of the present invention is rotatably mounted on the shoulder of the backrest 10. The guide member 21 can be rotated and adjusted around the axis Y.

[0049] The guide member 21 is rotatably mounted on the shoulder of the backrest 10 of the automobile seat, so that the guide member 21 can adapt to the direction of the safety belt by rotating around the axis Y, avoiding obstruction to the safety belt and also playing a role in protecting the safety belt.

[0050] In a preferred embodiment, if Figure 3 and Figure 5 As shown, the guide member 21 is rotatably mounted on the shoulder of the backrest 10 of the car seat by means of a bolt 22. A mounting hole 11 is provided on the shoulder of the backrest 10 of the car seat. The bolt 22 passes through the guide member 21 to connect the guide member 21 to the mounting hole 11 of the backrest 10 of the car seat. The guide member 21 can be rotated and adjusted around the bolt 22.

[0051] In another preferred embodiment, the guide member 21 can be rotatably installed on the shoulder of the backrest 10 of the automobile seat through components such as a rotating shaft or a bearing.

[0052] In a specific embodiment of the present invention, Figures 1 to 3 As shown, the connection strength of the guide element 21 to the backrest 10 of the vehicle seat is adapted to the tensile force to which the vehicle seat is subjected when the vehicle crashes.

[0053] Specifically, the connection strength can be selected with reference to the maximum tensile force that the car is subjected to when it collides. For example, when bolts 22 are used to connect the guide member 21 to the car seat 10, bolts 22 can be selected with a grade of M10 or above, so that they can withstand the force generated when the car collides. Similarly, when using components such as shafts or bearings to install the guide member 21, shafts or bearings with strength that meets the requirements are selected to avoid the guide member 21 falling off due to insufficient connection strength when the car collides.

[0054] In a specific embodiment of the present invention, Figures 3 to 5 As shown, the guide member 21 of the present invention comprises a guide bracket 212 and a guide roller 213 rotatably mounted on the guide bracket 212 ; the inner side surface of the guide bracket 212 and the guide roller 213 enclose a guide channel 211 .

[0055] By providing a rotatable guide roller 213, the friction resistance between the guide roller and the safety belt can be reduced to avoid obstacles to the retraction and extension of the safety belt. The guide roller can also smoothly contact with the safety belt to protect the safety belt. Fig.14 As shown, the seat belt 13 can be in contact with the guide roller 213 when the car seat is in a large tilt angle posture. In this posture, the seat belt 13 bypasses the guide roller 213. When the seat belt 13 is retracted or released, the guide roller 213 can reduce the friction resistance between it and the seat belt 13 through its own rotation, thereby avoiding obstruction to the seat belt.

[0056] Furthermore, the guide roller 213 is disposed closer to the seat surface of the backrest 10 than the guide bracket 212 , and the guide bracket 212 is disposed closer to the back surface of the backrest 10 .

[0057] In a preferred embodiment, both ends of the guide roller 213 are rotatably mounted on the guide bracket 212 via bearings.

[0058] In another preferred embodiment, Figure 4 and Figure 5 As shown, the guide roller 213 is a cylindrical structure with a hollow interior. A sleeve 215 is inserted into the guide roller 213 . The sleeve 215 is rotatably mounted on the guide bracket 212 . The guide roller 213 and the sleeve 215 can rotate relative to the guide bracket 212 .

[0059] Furthermore, if Figure 4 and Figure 5 As shown, both ends of the sleeve 215 are rotatably mounted on the guide bracket 212 via bearings 214 , and the sleeve 215 and the guide roller 213 rotate together relative to the guide bracket 212 , and the sleeve 215 and the guide roller 213 are coaxially arranged. Specifically, the sleeve 215 is inserted into the guide roller 213, and bearings 214 are arranged at both ends of the sleeve 215. Part of the bearing 214 extends into the sleeve 215, and the bearing 214 and the sleeve 215 can be fixedly connected; a connecting hole 2126 is opened at the corresponding position of the guide bracket 212; the guide roller 213, the sleeve 215 and the bearing 214 are inserted into the connection of the guide bracket 212, and the bearing 214 is aligned with the corresponding connecting hole 2126. The block 216 extends from the outside of the guide bracket 212 into the connecting hole 2126, and then extends into the bearing 214. The block 216 can be fixedly connected to the guide bracket 212, and then the guide roller 213 and the sleeve 215 can rotate relative to the guide bracket 212.

[0060] Preferably, the sleeve 215 is made of metal material, and the guide roller 213 is made of plastic material. The sleeve 215 is arranged inside the guide roller 213 to improve the structural strength of the guide roller 213.

[0061] In another preferred embodiment, the guide roller 213 and the sleeve 215 can be integrally injection molded.

[0062] In a specific embodiment of the present invention, Figure 4 and Figure 5 As shown, guide portions 2131 larger than the middle portion are provided at both ends of the guide roller 213. The guide portion 2131 is arc-shaped, and the purpose is to make the contact surface with the safety belt smooth, prevent the safety belt from being cut, and protect the safety belt. The guide portion 2131 and the middle portion of the guide roller 213 have a smooth transition, and the safety belt is constrained by the guide portion 2131 to prevent the safety belt from being stuck in the gap between the guide roller 213 and the guide bracket 212.

[0063] In a specific embodiment of the present invention, Figure 4and Figure 5 As shown, the side of the guide bracket 212 opposite to the guide roller 213 is an arc surface. The arc surface can protect the safety belt. Fig.16 As shown, when the safety belt 13 contacts the arcuate surface, the arcuate surface can contact the safety belt 13 smoothly to avoid damage to the safety belt 13, especially when subjected to greater stress, to avoid the safety belt 13 from being stuck.

[0064] In a specific embodiment of the present invention, Figure 4 and Figure 5 As shown, the guide bracket 212 includes a side wall 2121 and an upper flange portion 2122 bent outward along the top end of the side wall 2121 , and the connection between the upper flange portion 2122 and the side wall 2121 is arc-shaped.

[0065] Preferably, the side wall 2121 of the guide bracket 212 is vertically arranged, and a portion of the top end thereof is bent outwardly to be horizontal, and the bending portion is an arc-shaped transition, thereby forming an upper flange portion 2122 .

[0066] Furthermore, the bottom end of the side wall 2121 of the guide bracket 212 is also provided with a lower flange portion 2123 bent outward, and the connection between the lower flange portion 2123 and the side wall 2121 is arc-shaped. Preferably, the side wall 2121 of the guide bracket 212 is vertically arranged, and a portion of its bottom end is bent outwardly to be horizontal, and the bending part is an arc-shaped transition, thereby forming the lower flange portion 2123. The arrangement of the lower flange portion 2123 enables the guide bracket 212 to be stably placed on the shoulder of the car seat 10.

[0067] Furthermore, a connecting portion 2124 is provided on the side of the lower flange portion 2123 of the guide bracket 212 away from the guide roller 213 , and an axial hole 2125 is opened at the connecting portion 2124 , a bushing 23 is clamped at the axial hole 2125 , and the guide bracket 212 is installed through the axial hole 2125 .

[0068] In a specific implementation of the present invention, the outer contour of the side wall 2121 of the guide bracket 212 is U-shaped, and the guide roller 213 is rotatably installed at the opening of the U-shape.

[0069] In another preferred embodiment, the outer contour of the side wall 2121 of the guide bracket 212 is C-shaped or semicircular.

[0070] In a specific implementation of the utility model, Figure 6 and Figure 7 As shown, the safety belt guiding mechanism of the present invention further comprises an energy absorbing structure 24 arranged on the vehicle seat, and the energy absorbing structure 24 is drivingly connected to the backrest of the vehicle seat.

[0071] When the backrest is subjected to tension, the energy absorbing structure 24 operates, and the energy absorbing structure 24 can drive the backrest to rotate forward.

[0072] Preferably, a tension detector can be provided on the backrest, and the tension detector is connected to the energy absorbing structure 24. The tension detector is used to detect the force acting on the backrest of the car seat. When the tension detector detects that the force acting on the backrest is greater than a set value, the energy absorbing structure 24 is triggered to operate, and the energy absorbing structure 24 then drives the backrest to rotate forward.

[0073] Specifically, the energy absorption structure 24 can refer to the applicant's prior patent (authorization announcement number CN113459911B, invention name is a car front collision seat energy absorption structure and seat) a car front collision seat energy absorption structure and the energy absorption mechanism disclosed in the seat, which can rotate the backrest forward when the car collides head-on, absorb the destructive energy generated by the collision accident, and reduce the purpose of secondary energy transfer to the human body.

[0074] like Figure 6 , Figure 8 , Fig.11 and Fig.14 As shown, the backrest 10 of the car seat is in a state of large inclination backward, at this time, the guide member 21 is located at the rear of the B-pillar 12, and the part of the safety belt 13 passing through the guide member 21 bypasses the guide roller 213, and the backrest 10 of the car seat bears the tension of the safety belt 13. If the car collides in this state, the tension of the safety belt 13 is transmitted to the backrest 10 of the car seat through the guide member 21. After the backrest 10 bears the tension, the energy absorption structure 24 is triggered to make the backrest rotate forward, combined with the Figure 7 , Fig. 9 , Fig.12 and Fig.15 As shown, the backrest 10 rotates forward with the guide member 21, and the portion of the safety belt 13 in the guide member 21 leaves the guide roller 213 and tilts backward. At this time, the tension of the safety belt 13 begins to be borne by the B-pillar 12, and the backrest 10 can stop rotating forward. Fig.10 , Fig.13 and Fig.16 As shown, in the later stage of the collision, the backrest 10 may tilt forward, the guide 21 is located in front of the B-pillar 12, and the part of the safety belt 13 in the guide 21 contacts the arc surface at the rear of the guide 21. The tension of the safety belt 13 is borne by the B-pillar. In the later stage of the collision, the tension of the safety belt is directly transmitted to the B-pillar, effectively reducing the energy that the backrest needs to absorb during a frontal collision and reducing the risk of occupant injury. Figures 8 to 10 As shown, during the forward rotation of the backrest, the guide element 21 can be adapted to the course of the seat belt by rotating.

[0075] The automobile seat of the utility model changes the force path of bearing the tension of the safety belt by arranging the guide member on the backrest, and the retractor of the safety belt is arranged on the B-pillar. After the safety belt is extended from the retractor, it passes through the guide channel of the guide member arranged at the shoulder of the backrest, then passes around the body of the occupant and is fixed to the fixed point next to the automobile seat. When the backrest is tilted backward at a large angle (the backrest is behind the B-pillar), the tension of the safety belt is borne by the backrest. When the backrest is flipped forward by the impact of a collision, in the early stage of the collision, the backrest bears the tension of the safety belt. Under the action of the energy absorbing structure, the backrest rotates forward at a large angle. When the guide member passes over the B-pillar, the retractor directly pulls the safety belt, the B-pillar starts to bear the tension of the safety belt, the backrest stops rotating forward, and in the late stage of the collision, the tension of the safety belt is borne by the B-pillar. In this way, the large-angle backward tilt of the backrest can be achieved, the safety of the occupant can be guaranteed, and the weight of the skeleton assembly and the cost of the seat can be reduced.

[0076] The utility model is described in detail above in conjunction with the embodiments of the drawings. A person skilled in the art can make various variations of the utility model according to the above description. Therefore, some details in the embodiments should not constitute a limitation of the utility model, and the scope of protection of the utility model shall be defined by the scope of the attached claims.

Claims

1. A car seat with a seat belt guide, characterized in that: include: A guide member (21) is arranged on the backrest (10) of the automobile seat, wherein a guide channel (211) is formed on the guide member (21) for a safety belt (13) to pass through, and a retractor of the safety belt (13) is arranged on the B-pillar (12) of the automobile.

2. The vehicle seat with a seat belt guide according to claim 1, characterized in that: The guide member (21) is rotatably mounted on the shoulder of the backrest (10).

3. The vehicle seat with a safety belt guide according to claim 1, characterized in that: The guide channel (211) is arranged vertically.

4. The vehicle seat with a safety belt guide according to claim 1, characterized in that: The guide member (21) comprises a guide bracket (212) and a guide roller (213) rotatably mounted on the guide bracket (212); the inner side surface of the guide bracket (212) and the guide roller (213) are enclosed to form the guide channel (211).

5. The vehicle seat with a safety belt guide according to claim 4, characterized in that: Both ends of the guide roller (213) are rotatably mounted on the guide bracket (212) via bearings (214).

6. The vehicle seat with a safety belt guide according to claim 4, characterized in that: The guide bracket (212) comprises a side wall (2121) and an upper flange portion (2122) bent outward along the top end of the side wall (2121), and the connection between the upper flange portion (2122) and the side wall (2121) is arc-shaped.

7. The vehicle seat with a safety belt guide according to claim 4, characterized in that: The guide roller (213) is a cylindrical structure with a hollow interior. A sleeve (215) is inserted into the guide roller (213). The sleeve (215) is rotatably mounted on the guide bracket (212). The guide roller (213) can rotate relative to the guide bracket (212) through the sleeve (215).

8. The vehicle seat with a safety belt guide according to claim 4, characterized in that: Both ends of the guide roller (213) are provided with guide portions (2131) that are larger than the middle portion.

9. The vehicle seat with a safety belt guide according to claim 1, characterized in that: The connection strength between the guide member (21) and the backrest (10) is adapted to the pulling force to which the vehicle seat is subjected when the vehicle collides.

10. The vehicle seat with a safety belt guide according to claim 1, characterized in that: It also comprises an energy absorbing structure (24) arranged on the automobile seat, wherein the energy absorbing structure (24) is drivingly connected to the backrest of the automobile seat.

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