Car seat and method of securing the car seat to a vehicle

Abstract

The present invention discloses a car safety seat, which is used to be fixed in a vehicle. The car safety seat includes a seat body and a seat belt guide. The seat belt guide is arranged on the seat body to change the path of the vehicle's seat belt, so that the path of the seat belt is an offset path that deviates from the original path. When the seat belt passing through the seat body is not engaged by the seat belt guide, the path of the seat belt is the original path, and when the seat belt passing through the seat body is engaged by the seat belt guide, the path of the seat belt is the offset path. The seat belt guide can strengthen the symmetry of the force applied by the vehicle seat when a car accident occurs, and strengthen the dynamic performance of the car safety seat. The disconnection structure of the seat belt guide can effectively absorb the impact force at different time points of the car accident.

Description

[0001] Filing date of original application: 2019 / 04 / 18

[0002] Application number of the original application: 201910313072.4

[0003] Title of the invention of the original application: Car safety seat with seat belt guide Technical Field

[0004] The present invention relates to a car safety seat for protecting children in a vehicle during transportation, and more particularly to a car safety seat specially designed to accommodate small infants facing backwards and a method for fixing the car safety seat on a vehicle. Background Art

[0005] There are many designs of rear-facing or foldable car seats that all have similar purposes. The main purpose is to keep the child as safe as possible in the event of a vehicle accident. To achieve this goal, many designs focus on reducing the force on the child in the event of an accident, and different designs have very different ways of achieving this goal.

[0006] Some designs place special emphasis on absorbing unnecessary forces at the key points where the safety belt and the car safety seat interact. If only the leg strap is used to secure the car safety seat, the occupant in the seat will be subjected to symmetrical forces in the event of a vehicle collision. If the shoulder strap and the leg strap are used at the same time to secure the car safety seat, the diagonal shoulder strap will produce asymmetrical forces, causing different behavior patterns for the occupants in the seat, which poses a considerable challenge to the designers of the car safety seat. In the prior art, the designs made to offset the impact of this asymmetry may increase the weight and complexity of the car safety seat. Summary of the invention

[0007] The technical problem to be solved by the present invention is to solve the influence of the asymmetric force generated when a car safety seat is fixed with a three-point safety belt on the car safety seat in the event of a collision.

[0008] According to the specific technical solution disclosed in the embodiment of the present invention, one purpose of the present invention is to provide a safer riding environment for the occupants by redirecting the force exerted by the shoulder belt of the vehicle on the occupants away from the occupants.

[0009] The technical feature of the present invention is that the shoulder strap of the vehicle is offset, which not only makes the appearance more delicate, but also maintains the purpose of effectively reducing the force borne by the occupants without significantly increasing the weight and complexity of the car safety seat.

[0010] Another object of the present invention is to enhance the symmetry of force transfer by redirecting the shoulder strap of the vehicle, thereby eliminating the inherent asymmetry of the shoulder strap by creating a new path for the shoulder strap.

[0011] Another object of the present invention is to provide a car safety seat that can reduce the forces on the occupant in the lateral direction and also reduce the load applied to the main seat belt channel opening position of the car safety seat by arranging simple structural elements at the opening of the seat belt channel.

[0012] Another technical feature of the present invention is the detachable design for redirecting the shoulder strap, which can absorb possible impact forces at different time points during a vehicle collision accident, thereby bringing a more symmetrical force distribution to the car safety seat.

[0013] The advantage of the present invention is that the detachable design allows the impact force during a car collision to be largely directed to other directions, rather than relying solely on the seat body to absorb the impact force, and under normal consumer use conditions, in the event of an accidental overload, the detachable design can still be reset.

[0014] Another technical feature of the present invention is the symbiotic relationship between the disconnectable design and the fixed combination of the seat belt guide. This combination also comes with a reserved section that can be released after the disconnectable design begins to disconnect until the fixed joint, that is, the hard stop.

[0015] In order to solve the above problems, an embodiment of the present invention discloses a car safety seat for being fixed in a vehicle, the car safety seat comprising a seat body and a safety belt guide, the safety belt guide being arranged on a first side of the seat body and adjacent to a safety belt channel of the seat body to change the path of a shoulder belt of the vehicle's safety belt, so that the path of the shoulder belt of the safety belt is an offset path deviated from an original path between a retractor and an entrance of the safety belt channel on the first side, the shoulder belt of the safety belt comprising a first section and a second section When the leg belt and the second section of the shoulder belt pass through the belt channel of the seat body, the buckle is engaged in the buckle seat and the first section of the shoulder belt of the seat belt is not engaged by the belt guide, the path of the shoulder belt of the seat belt is the original path, and when the leg belt and the second section of the shoulder belt pass through the seat body and the first section of the shoulder belt of the seat belt is engaged by the belt guide, the path of the shoulder belt of the seat belt is the offset path.

[0016] In an embodiment of the present invention, the seat belt guide is fixed to the first side of the seat body, and an open opening is formed between the seat belt guide and the seat body. The first section of the shoulder belt of the seat belt moves into the open opening so that the path of the seat belt is changed by the seat belt guide from the original path to the offset path that deviates toward the backrest of the vehicle seat.

[0017] In an embodiment of the present invention, the seat belt guide is fixed to a first side of the seat body, one end of the seat belt guide is located above the original path, and an open opening is formed between the other end of the seat belt guide and the seat body.

[0018] In an embodiment of the present invention, the seat belt guide is a solid structure made by injection molding.

[0019] In an embodiment of the present invention, the safety belt guide is fixed to the bottom of the seat body through a webbing.

[0020] In an embodiment of the present invention, the seat belt guide includes a accommodating groove and two supporting arms, and a slit is formed between the two supporting arms, and the slit serves as a channel connecting the accommodating groove, wherein the first section of the shoulder belt of the seat belt passes through the slit and is accommodated in the accommodating groove, so that the path of the seat belt is changed by the seat belt guide from the original path to the offset path that deviates toward the bottom of the seat body.

[0021] In an embodiment of the present invention, the seat belt guide is made of injection molding, and the two supporting arms provide a breakable structure and can be broken when subjected to a preset force.

[0022] In an embodiment of the present invention, the seat belt guide is a solid structure with a groove, wherein the first section of the shoulder belt of the seat belt is inserted into and accommodated in the groove, so that the path of the seat belt is changed by the seat belt guide from the original path to the offset path that deviates toward the bottom of the seat body.

[0023] In an embodiment of the present invention, the webbing includes a rigid body and a sacrificial suture located between the rigid body and the seat belt guide, the rigid body is connected to the bottom of the seat body, and the sacrificial suture can be broken when subjected to a preset force to generate a reserved section until a hard stop occurs.

[0024] In an embodiment of the present invention, the seat belt guide is made of metal.

[0025] In an embodiment of the present invention, the car safety seat further includes a breakaway piece, which is fixed to the bottom of the seat body, and the webbing is sewn on the breakaway piece to form a reserved section between the breakaway piece and the pivotal end of the webbing, and the breakaway piece can be broken when subjected to a preset force to release the reserved section until a hard stop occurs.

[0026] In an embodiment of the present invention, the breakaway piece is made of injection-molded plastic and comprises a V-shaped cutout in the center, and the webbing is sewn in the center of the breakaway piece.

[0027] In addition, in order to solve the above-mentioned problem, an embodiment of the present invention further discloses a method for fixing a car safety seat on a vehicle, which includes arranging a seat belt guide on a first side of a seat body of the car safety seat and adjacent to a seat belt channel of the seat body; and using the seat belt guide to change the path of a shoulder belt of the vehicle's seat belt, so that the path of the shoulder belt of the seat belt is an offset path that deviates from an original path between a retractor and an entrance of the seat belt channel on the first side; wherein the shoulder belt of the seat belt includes a first section and a second section. Section, when the leg belt of the safety belt and the second section of the shoulder belt pass through the safety belt channel of the seat body, the buckle is engaged in the buckle seat and the first section of the shoulder belt of the safety belt is not engaged by the safety belt guide, the path of the shoulder belt of the safety belt is the original path, and when the leg belt of the safety belt and the second section of the shoulder belt pass through the seat body and the first section of the shoulder belt of the safety belt is engaged by the safety belt guide, the path of the shoulder belt of the safety belt is the offset path. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A front view of a vehicle seat with a seat belt is shown.

[0029] Figure 2 yes Figure 1 Side view of a vehicle seat with a car seat secured.

[0030] Figures 3 to 5 Schematic diagram of a first embodiment of the car safety seat of the present invention.

[0031] Figures 6 to 9 Schematic diagram of a second embodiment of the car safety seat of the present invention.

[0032] Figures 10 to 13 Schematic diagram of a third embodiment of the car safety seat of the present invention.

[0033] Fig.14Schematic diagram of a fourth embodiment of the car safety seat of the present invention.

[0034] The reference numerals are described as follows:

[0035] P0 Original path

[0036] P1 First Path

[0037] P2 Second Path

[0038] 1 Vehicle Seat

[0039] 10 Backrest

[0040] 11 First waist

[0041] 12 Second waist

[0042] 13 Shoulders

[0043] 14 Retractor

[0044] 15 Buckle seat

[0045] 2 Seat belts

[0046] 21 Shoulder strap

[0047] 211 First Section

[0048] 212 Second Section

[0049] 22 Leg strap

[0050] 23 Buckle

[0051] 3 Car seats

[0052] 30 base body

[0053] 31 First side

[0054] 32 Second side

[0055] 33 Seatbelt access

[0056] 331 Entrance

[0057] 34 bottom

[0058] 4,5,6 Seat belt guides

[0059] 41,42 end

[0060] 43 Open mouth

[0061] 44 Termination line

[0062] 51 Support arm

[0063] 52 Slit

[0064] 53 Storage tank

[0065] 54,64 Ribbon

[0066] 61 Slotting

[0067] 62 Sacrificial Suture

[0068] 63 Rigid Body

[0069] 65 Breakaway piece

[0070] 66 V-shaped cut

[0071] 67 Pivot end

[0072] 68 reserved segment DETAILED DESCRIPTION

[0073] Please refer to Figure 1 as well as Figure 2 , Figure 1 is a front view of a vehicle seat with a seat belt, Figure 2 yes Figure 1 A side view of a vehicle seat in which a car safety seat is fixed. The vehicle seat 1 of the car is provided with a three-point safety belt and has a retractor 14 at the shoulder 13 of the backrest 10, a buckle seat 15 at the first waist portion 11 diagonally opposite the shoulder 13 of the backrest 10, and a safety belt 2 extending from the retractor 14 and fixed at the second waist portion 12 opposite to the first waist portion 11. The safety belt 2 includes a shoulder belt 21 and a leg belt 22 connected to each other by a buckle 23, the shoulder belt 21 extending from the retractor 14 and connected to the leg belt 22, and the leg belt 22 is further connected to the second waist portion 12. The buckle 23 is used to snap into the buckle seat 15, thereby forming a three-point configuration of the shoulder portion 13, the first waist portion 11 and the second waist portion 12, the shoulder belt 21 spans the front chest of the passenger and the leg belt 22 spans the thighs of the passenger. In Figure 2 In the figure, the seat body 30 of the car safety seat 3 has a safety belt channel 33 connecting the first side 31 and the second side 32 of the seat body 30. The car safety seat 3 is placed and fixed on the vehicle seat 1 by passing the leg belt 22 and the second section 212 of the shoulder belt 21 through the safety belt channel 33 and allowing the buckle 23 to be engaged in the buckle seat 15.

[0074] Please refer to Figures 3 to 5 , Figures 3 to 5 FIG. 1 is a schematic diagram of a first embodiment of a car safety seat of the present invention. The car safety seat 3 includes Figure 2 The same seat body 30 as described in the above, and a first side 31 of the seat body 30 and adjacent to the safety belt channel 33 (reference Figure 2) is provided with a safety belt guide 4 for changing the path of the shoulder belt 21 away from its conventional path. More specifically, the shoulder belt 21 is a part of the safety belt 2, and when fastened to the car safety seat 3 together with the lap belt 22, the shoulder belt 21 can be additionally divided into a first section 211 and a second section 212. The first section 211 extends from the retractor 14 and connects to the lap belt 22 at an entrance 331 of the safety belt channel 33 located at the first side 31 of the car safety seat 3. The conventional safety belt fastening method is such that the first section 211 of the shoulder belt 21 extends from the retractor 14 and is directly connected to the entrance 331 along an original path P0, and the original path P0 is a straight path directly connecting the retractor 14 and the entrance 331.

[0075] Please refer to Figure 3 One end 41 of the safety belt guide 4 of the first embodiment is fixed to the first side 31 of the seat body 30 and is located on the original path P0 (reference Figure 5 ) above, and an opening 43 is formed between the other end 42 of the safety belt guide 4 and the seat body 30. The first section 211 of the shoulder belt 21 can be moved into the opening 43 (such as Figure 3 ) and stops at the end line 44 (such as Figure 4 ) position. In one embodiment, the seat belt guide 4 made of plastic injection molding changes or redirects the path of the first section 211 and deviates from the original path P0 forward to the backrest 10 of the vehicle seat 1 and is located on the first path P1 (i.e., the offset path). When the shoulder belt 21 moves between the seat belt guide 4 and the seat body 3, the seat belt guide 4 pushes the first section 211 of the shoulder belt 21 toward the backrest 10 and does not align with the retractor 14. Since the seat belt guide 4 is a solid structure, the shoulder belt 21 will not be released when a vehicle collision occurs unexpectedly. Therefore, the first embodiment can improve the dynamic performance of the car safety seat 3 while facilitating installation. The user only needs to take one more simple step to complete the operation.

[0076] Please refer to Figures 6 to 9 , Figures 6 to 9 2 is a schematic diagram of a second embodiment of the car safety seat of the present invention. The second embodiment of the present invention changes the first section 211 of the shoulder strap 21 and deviates from the original path P0 downward toward the bottom 34 of the seat body 30 and is located on the second path P2 (i.e., the offset path), such as Fig. 9The seat belt guide 5 is a detachable structure made of plastic injection molding and is fixed to the bottom 34 of the seat body 30 through the webbing 54. In order to change the path of the first section 211 to move downward from the original path P0, the seat belt guide 5 is located on the first side 31 of the seat body 30 and between the entrance 331 of the seat belt channel 33 of the first side 31 and the bottom 34 of the seat body 30. Please refer to Figure 6 The seat belt guide 5 includes a receiving groove 53 and two supporting arms 51, and a slit 52 is formed between the two supporting arms 51. The slit 52 serves as a passage connecting the receiving groove 53. During installation, the shoulder belt 21 and the leg belt 22 are pulled through the original path in the same manner as the conventional installation, and then the first section 211 is passed through the slit 52 and moved into the receiving groove 53. In this way, the first section 211 can be accommodated in the receiving groove 53 and guided by the seat belt guide 5 to the bottom 34 of the seat body 30 downwardly deviating from the original path P0 and being located on the second path P2. In the second embodiment, the material and geometric shape of the two supporting arms 51 of the seat belt guide 5 can be adjusted to be disconnected when subjected to a preset force, so as to release the seat belt 2 in the event of an accident overload or a vehicle collision.

[0077] Please refer to Figures 10 to 13 , Figures 10 to 13 is a schematic diagram of the third embodiment of the car safety seat of the present invention. Similar to the principle of the second embodiment, the third embodiment has a sacrificial stitch. The safety belt guide 6 of the third embodiment is made of metal and has a solid structure with a slot 61. The first section 211 of the shoulder belt 21 is inserted into and accommodated in the slot 61, and the safety belt 2 will not be loosened in the event of a car accident. In the third embodiment, the first section 211 is also guided by the safety belt guide 6 to the bottom 34 of the seat body 30 downward, deviating from the original path P0, and located on the second path P2, as Fig. 9 As shown. The seat belt guide 6 is also fixed to the bottom 34 of the seat body 30 by the webbing 64. The webbing 64 includes a rigid body 63 and a sacrificial suture 62 located between the rigid body 63 and the seat belt guide 6. The rigid body 63 is connected to the bottom 34 of the seat body 30, and the sacrificial suture 62 can be adjusted to have a specific shape to break when subjected to a preset force and generate a reserved section until a hard stop occurs. The installation and advantages of this embodiment are equivalent to the previous embodiment.

[0078] Please refer to Fig.14 , Fig.14Schematic diagram of the fourth embodiment of the car safety seat of the present invention. The fourth embodiment uses the safety belt guide 6 of the third embodiment and adds a sacrificial breaking piece 65. The breaking piece 65 is fixed to the bottom 34 of the seat body 30, and the webbing 64 is sewn on the breaking piece 65 to form a reserved section 68 between the breaking piece 65 and the pivot end 67 of the webbing 64. The breaking piece 65 is made of injection-molded plastic and has a V-shaped cutout 66 in the center, and the webbing 64 is sewn in the center of the breaking piece 65. When a vehicle collision occurs, the more fragile V-shaped cutout 66 in the center will break to release a reserved section 68. After the reserved section 68 is released, the pivot end 67 of the webbing 64 becomes a fixed stop point and no more webbing 64 is released. The sacrificial breaking piece 65 can also be adjusted to break when subjected to a preset force, so that the fourth embodiment also has similar advantages and installation methods as the previous embodiment. The materials described in each of the above embodiments can be changed and replaced with other similar structures.

[0079] An embodiment of the present invention provides a car safety seat, wherein a seat belt guide is arranged on a seat body, and when the car safety seat is placed on a vehicle seat and the seat belt passes through and fixes the car safety seat, the seat belt guide is used to guide the seat belt, so as to strengthen the symmetry of the force applied by the vehicle seat when a car accident occurs, and to strengthen the dynamic performance of the car safety seat. The disconnection structure of the seat belt guide can effectively absorb the impact force at different time points of the car accident, so that the force generated by the impact can be dispersed in all embodiments.

[0080] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A car safety seat, used to be fixed in a vehicle, characterized in that: The car safety seat comprises: a seat body; and a seat belt guide disposed on a first side of the seat body and adjacent to a seat belt channel of the seat body to change a path of a shoulder belt of the vehicle seat belt so that the path of the shoulder belt of the seat belt is an offset path that deviates from an original path between a retractor and an entrance of the seat belt channel on the first side; The shoulder belt of the safety belt includes a first section and a second section, when the leg belt of the safety belt and the second section of the shoulder belt pass through the safety belt channel of the seat body, the buckle is engaged in the buckle seat and the first section of the shoulder belt of the safety belt is not engaged by the safety belt guide, the path of the shoulder belt of the safety belt is the original path, and when the leg belt of the safety belt and the second section of the shoulder belt pass through the seat body and the first section of the shoulder belt of the safety belt is engaged by the safety belt guide, the path of the shoulder belt of the safety belt is the offset path.

2. The car safety seat according to claim 1, characterized in that: The seat belt guide is fixed to the first side of the seat body, and an open opening is formed between the seat belt guide and the seat body. The first section of the shoulder belt of the seat belt moves into the open opening, so that the path of the seat belt is changed by the seat belt guide from the original path to the offset path that deviates toward the backrest of the vehicle seat.

3. The car safety seat according to claim 2, characterized in that: The seat belt guide is fixed to the first side of the seat body, one end of the seat belt guide is located above the original path, and an open opening is formed between the other end of the seat belt guide and the seat body.

4. The car safety seat according to claim 2, characterized in that: The seat belt guide is a solid structure made by injection molding.

5. The car safety seat according to claim 1, characterized in that: The safety belt guide is fixed to the bottom of the seat body through a webbing.

6. The car safety seat according to claim 5, characterized in that: The seat belt guide includes a accommodating groove and two supporting arms, and a slit is formed between the two supporting arms. The slit serves as a channel connecting the accommodating groove, wherein the first section of the shoulder belt of the seat belt passes through the slit and is accommodated in the accommodating groove, so that the path of the seat belt is changed by the seat belt guide from the original path to the offset path that deviates toward the bottom of the seat body.

7. The car safety seat according to claim 6, characterized in that: The seat belt guide is made of injection molding, and the two supporting arms provide a breakable structure and can be broken when subjected to a preset force.

8. The car safety seat according to claim 5, characterized in that: The seat belt guide is a solid structure with a groove, wherein the first section of the shoulder belt of the seat belt is inserted into and accommodated in the groove, so that the path of the seat belt is changed by the seat belt guide from the original path to the offset path that deviates toward the bottom of the seat body.

9. The car safety seat according to claim 8, characterized in that: The webbing includes a rigid body and a sacrificial suture located between the rigid body and the safety belt guide, the rigid body is connected to the bottom of the seat body, and the sacrificial suture can be broken when subjected to a preset force to generate a reserved section until a hard stop occurs.

10. The car safety seat according to claim 8, characterized in that: The seat belt guide is made of metal.

11. The car safety seat according to claim 8, characterized in that: The car safety seat further includes a breakaway piece, which is fixed to the bottom of the seat body, the webbing is sewn on the breakaway piece to form a reserved section between the breakaway piece and the pivotal end of the webbing, and the breakaway piece can be broken when subjected to a preset force to release the reserved section until a hard stop occurs.

12. The car safety seat according to claim 11, characterized in that: The breakaway piece is made of injection molded plastic and includes a V-shaped cutout in the center, and the webbing is sewn in the center of the breakaway piece.

13. A method for securing a car safety seat to a vehicle, comprising: disposing a seat belt guide on a first side of a seat body of the car safety seat and adjacent to a seat belt channel of the seat body; as well as Using the seat belt guide to change the path of the shoulder belt of the vehicle's seat belt so that the path of the shoulder belt of the seat belt is an offset path that deviates from an original path between a retractor and an entrance of the seat belt channel on the first side; The shoulder belt of the safety belt includes a first section and a second section, when the leg belt of the safety belt and the second section of the shoulder belt pass through the safety belt channel of the seat body, the buckle is engaged in the buckle seat and the first section of the shoulder belt of the safety belt is not engaged by the safety belt guide, the path of the shoulder belt of the safety belt is the original path, and when the leg belt of the safety belt and the second section of the shoulder belt pass through the seat body and the first section of the shoulder belt of the safety belt is engaged by the safety belt guide, the path of the shoulder belt of the safety belt is the offset path.

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