KR100651178B1 - air bag system for built in a steering wheel - Google Patents

Abstract

The present invention simplifies the receiving means incorporating the actuating means and the airbag into a single set, enables the reuse of the actuating means, and stably locks the striking member to collide at an appropriate speed (about 40 km / h) or more. It can be operated only at the time of locking and the locking state is released, and the center of impact of the rotating striking member is reliably applied to the center of the punching pin so that the gas cylinder can be punctured accurately. The quality of the product can be made uniformly, and it can be easily installed without any power source without any airbag system, and it can be reused and it is economical. An airbag system with a built-in steering wheel that maximizes the prevention effect.

Airbag,

Description

Air bag system for built in a steering wheel             

1 is a side configuration view showing an operating state of the airbag system to which the present invention is applied

Figure 2 is an exploded perspective view of the airbag system to which the present invention is applied

Figure 3 is a cross-sectional view showing an installation state of the airbag system to which the present invention is applied

Figure 4 is an exploded perspective view showing the operating means of the airbag system to which the present invention is applied

5 is an enlarged perspective view illustrating main parts of FIG. 4;

Figure 6 is a plan view showing the operating means of the airbag system to which the present invention is applied

Figure 7 shows the operating state of the airbag system to which the present invention is applied,

a indicates the assembled state before operation of the movable part,

b is a state in which the support lever of the support part is released by the operation of the movable part and the movable lever is rotated.

c is a state in which the movable lever is released from the striking member and the striking member is rotated by the restoring force of the spring,

d is a state in which the rotating blow member strikes the blow guide part and the punching pin opens the inside of the gas cylinder to eject the gas.

<Explanation of symbols for the main parts of the drawings>

10: accommodation means 20: main base

30: operating means 40: support member

50: movable part 51: support spring

52: movable weight 53: locking member

54: movable lever 60: hitting part

70: perforation 80: discharge

82: blow guide

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag system with a built-in steering wheel. In particular, when an automobile is subjected to a shock at a predetermined speed or more from the front while driving, the steering wheel is built with a mechanical shock inertia so that the released gas can be quickly supplied to the airbag. Relates to an airbag system.

As is well known, the airbag system is a device that is built in the center of the steering wheel of the vehicle to protect the human life by releasing the airbag between the steering wheel and the driver during the collision of the vehicle, such a conventional airbag system in front of the vehicle An impact sensing device is installed, and an actuator configured in the center of the steering wheel is configured to explode gunpowder and supply gas to the airbag.

However, such a conventional airbag system is a shock sensor that detects the impact when the vehicle is in front of the vehicle is installed in the front bumper of the vehicle separately from the operation unit for operating the airbag, the structure is complicated and the manufacturing cost rises In addition, in particular, when an error occurs in the electric device or water is introduced into the shockproof sensor, the detection function malfunctions, and there is a fear that airbags are released even during normal driving of the vehicle, which may cause a safety problem.

In addition, if the wiring connecting the shock sensing device and the operation part is damaged due to carelessness or external factors during the maintenance process, there is a problem that the airbag does not operate even when a collision accident in which a shock is applied at a predetermined speed or more does not protect human life.

In order to solve the above problems, the present applicant has applied for a steering wheel built-in airbag system with Patent 1997-47284 and has been patented with No. 0241145.

The pre-patented steering wheel built-in airbag system has the advantage of simple structure and reusability. However, when the precision of machining and assembly of the parts decreases, the striking member installed by the strong elasticity of the striking spring is locked in an unstable state, so that the proper speed ( There is a problem that the locking state of the striking member is not released at a collision impact of about 40 km / h or more per hour and is malfunctioned by being released at or below a proper speed or above a suitable speed.

In addition, as the locking member of the striking member is released, the rear end of the striking member is strongly rubbed from the side of the perforating pin tip in the process of striking the perforating pin, and then pushed to the side to advance the perforated pin. The rear end of the pin is advanced to a position slightly outward from the center to puncture one side of the gas cylinder inlet.

If the pointed tip of the drilling pin is inaccurately punctured the thick membrane portion away from the center of the gas cylinder inlet, which is closed with a thin membrane, the gas inlet may not penetrate or the area through which the gas penetrate is narrow may not be smooth. .

The present invention has been made in view of the above-mentioned conventional problems. The object of the present invention is to provide a simple and reusable structure, and to provide a suitable speed when driving a vehicle equipped with an airbag that stably locks the striking member. It can operate only in the case of a collision of about 40km / h or more, and when the locked state is released, the steering center of the rotating striking member is applied to the center of the end of the perforating pin to accurately puncture the gas cylinder. Relates to an airbag system.

Technical means of the present invention for achieving the above object,

When a strong impact is applied to the front of the vehicle driving at a suitable speed (about 40 km / h) or more, the striking member elastically installed on the spring hits the tip of the punching pin installed so as to slide on the connecting member, thereby drilling the inlet of the gas cylinder. In an airbag system with a built-in steering wheel, an actuating means configured to discharge gas into the inside of the airbag is embedded in a receiving means below the center of the steering wheel.                         

A support member fixed to the center of the spring and the striking member by being seated in a longitudinal direction from a central side of the main base on which a pair of springs and gas cylinders are mounted at both sides;

When the support spring is installed up and down between the inner end of the support member at the center of the main base is provided, and the support spring is elastically installed so that a strong impact is applied to the front of the vehicle driving at an appropriate speed (about 40km / h) or more It is provided with a movable movable member which is lowered and connected to the upper end of the supporting member so as to be rotatable, and when the movable additive is raised, it is grounded on the upper side of the movable weight and locked at the rear end while having a bearing which is rolled on the vertical movement of the movable weight. Maintaining the state, and when the movable addition is lowered is provided with a locking member for releasing the locking state at the rear end while rotating to one side, the front end is pivotally connected to the upper center of the support member and the locking member is maintained in the locked state The rear end is stopped by the locking member and the downward movement is stopped. , And when the locking state in which the locking member rotates is provided with a release lever movable to exit from the striking member to a rotary motion to the top is moved upwardly by the force of the spring provided resiliently in the striking member movable part;

When the striking member is operated, the striking guide portion is configured on the rear surface of the connecting member so as to accurately guide the punching pin in a straight line while rolling friction by the rear end of the rotating striking member.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. 1 is a side configuration view showing an operating state of the airbag system to which the present invention is applied, FIG. 2 is an exploded perspective view of the airbag system to which the present invention is applied, and FIG. 3 is a sectional view showing an installation state of the airbag system to which the present invention is applied; Figure 4 is an exploded perspective view showing the operating means of the airbag system to which the present invention is applied, Figure 5 is an enlarged perspective view of the main portion of FIG.

In the airbag system to which the present invention is applied, a striking member 61 elastically installed on the springs 62 and 63 is applied when a strong impact is applied to the front of a vehicle that is traveling at an appropriate speed (about 40 km / h) or more. An operating means (30) configured to blow the inlet of the gas cylinder (G) by hitting the tip of the drilling pin (71) installed so as to slide on the air (G) to release the gas to the airbag (A) is provided at the center of the steering wheel (11). In the airbag system with a built-in steering wheel in the receiving means 10, a pair of springs 62 and 63 and a gas cylinder G are seated in the longitudinal direction from a central side of the main base 20 mounted on both sides. The support member 40 is fixed to the center of the spring 62, 63 and the striking member 61, the support spring is installed up and down between the inner end of the support member 40 in the center of the main base 20 51 is provided, and is elastically installed on the support spring (51) When a strong impact is applied to the front of the vehicle traveling at a proper speed (about 40 km / h) or more, a movable weight 52 is provided which descends, and is rotatably connected to an upper end of the support member 40 so as to be movable ( When 52 is raised, it is grounded on the upper surface of the movable weight 52 and equipped with a bearing 533 which is rolled on the vertical movement of the movable weight 52 to maintain the locked state at the rear end, and the movable weight 52 Is lowered, the locking member 53 is rotated to one side to release the locking state at the rear end, and the leading end is pivotably connected to the upper center of the support member 40 so that the locking member 53 is locked. If it is maintained, the rear end is caught by the locking member 53 and the downward movement is stopped and at the same time, the front end is stopped by the striking member 61 to stop the operation, and the locking member 53 is rotated to release the locking state Spring installed elastically on the striking member 61 The movable part 50 is provided with the movable lever 54 which disengages from the striking member 61 by the rotational movement which the upper end moves upward by the force of the 62 and 63, The striking member 61 is When operated, the impact guide portion 82 is configured on the rear surface of the connecting member 81 to accurately guide the punching pin 71 in a straight line while rolling friction with the rear end 614 of the striking member 61, which is more specifically Explained as follows.

The main base 20 is provided with a guide groove 22 formed on the periphery so that the boss 21 protrudes on the inner side of the square plate, and is provided with an installation groove through which a screw hole penetrates in a vertical line with the boss 21. 23 is formed to be spaced apart a predetermined interval, the guide space 24 is provided in the interior of the installation groove 23, the stopper 25 is provided around the guide groove 22.

The support member 40 has a rectangular operating space 411 penetrates in the longitudinal direction in the upper side thereof, and an installation tool 41 seated in the installation groove 23 of the main base 20 is located at the bottom thereof. It is formed, and the upper boss 412 through which the guide hole 412a in the lower direction on the vertical line facing the boss 21 of the main base 20 is provided on the upper surface, the lower portion of the operating space 411 The coupling hole 413 penetrates, and the rotation support hole 414 penetrates in the horizontal direction inside the lower end of the operating space 411, and a guide hole 415 is formed on one side of the operating space 411. .

The movable weight 52 is composed of a cylindrical steel bar, but the upper end portion is narrower, so that the bearing 533 of the locking member 53 is grounded to the side. In addition, a receiving groove 521 is formed to receive the support spring 51 at the bottom, and a guide hole 522 penetrates up and down in the center thereof to move a movable weight at an upper portion of the coupling hole 413 of the support member 40. After insertion into the guide hole 522 of 52, the support rod 523 is provided, the lower end is mounted to the inner center of the seating space 24 of the main base 20.

The locking member 53, the through hole 531 is rotatably penetrated into the rotary support hole 414 of the support member 40, the mounting surface 532 is formed horizontally on one side, the movable A bearing 533 which is grounded on the upper surface of the pressing hole 522 of the weight 52 and rolled thereon is formed at a lower portion thereof, and a support rod 534 mounted to the rotation support hole 414 by passing through the guide hole 531. Is formed.

The movable lever 54, the through hole 541 is rotatably penetrated into the guide hole 415 of the support member 40, and is seated on the seating surface 532 of the locking member 53 on one side. The first support piece 542 is formed, and the second support piece protrudes downward to orthogonal to the first support piece 542 about the through hole 541 to control the rotation of the striking member 61 ( 543 is formed, and the support bar 544 is formed to be mounted to the guide hole 415 through the through hole 541.

The impact guide portion 82, the slide hole 821 is provided to the inside of the connection member 81 to face the same line with the guide hole 812 of the connection member 81, this slide hole 821 A slide rod 822 is provided to slide on the slide rod, and a receiving groove 824 is formed to receive an end of the slide rod 822, and a guide groove 825 is formed at one central end thereof to be at least half of the garden. A guide 823 is provided to face each other, and a bearing pressing hole 826 mounted to the guide groove 825 is provided, and the bearing pressing hole 826 is guided to prevent the guide groove 825 from being separated from the guide groove 825. A fixing bolt 827 is provided to couple the sphere 823.

In addition, the side wall of the airbag support 161 which is joined to the end surface of the airbag A in the airbag case 16 of the accommodation means 10 is configured to be foldable.

The following describes the operation process of the present invention configured as described above.

First, in order to operate the actuating means 30 of the airbag system, as shown in FIG. 6, by rotating the striking member 61, the fixing jaw 612 engages the first and second springs 62 and 63. Rotating the striking member 61 in the state where the (623) (633) is hanging so as to forcibly hang the engaging jaw 613 of the striking member 61 to the second support piece 543 of the movable lever 54. do.

In addition, the first support piece 542 is seated on the seating surface 532 of the locking member 53 in a state in which the movable lever 54 is rotated about the supporting rod 544, and the locking member 53 The bearing 533 is grounded to the side of the upper end of the movable weight 52 to be supported in a rolling operation state.

Therefore, the movable weight 52 is in a floating state in the seating space 24 of the main base 20 by the elasticity of the support spring 51 of the bottom surface.

The movable weight 52 and the support spring 51 are adjusted to be operated downward only at the impact impact of about 40 km / h or more while driving the vehicle.                     

Therefore, when a driving vehicle collides with another vehicle or an obstacle to the front to generate a collision impact force of about 40 km / h or more, as shown in FIG. 7A, the support weight 51 moves downward to the bottom of the impact impact as shown in FIG. 7A. While pressing the close contact with the seating space 24 of the main base 20.

At this time, the bearing 533 of the locking member 53 grounded on the upper side of the movable weight 52 is released while rolling, and the spring 62 wound around the striking member 61 connected to the movable lever 54. As shown in FIG. 7B by the restoring force of the (63), the first support piece of the movable lever (54) is released while the locking state of the locking member (53) is released by rotating clockwise around the support bar (534). 542 is also rotated downward counterclockwise around the support rod 544 by the restoring force of the springs 62 and 63 wound around the striking member 61 to be separated from the seating surface 532.

In addition, the second support piece 543 of the movable member 54 also rotates upwardly about the support rod 544 by the restoring force of the springs 62 and 63 wound around the striking member 61 and simultaneously The locking state of the striking member 61, which was forcibly supported by the second support piece 543, is released, and as shown in FIG. 7C, the first and second springs 62 are elastically installed in the striking member 61 in a double manner. The force of the (63) is restored so that the striking member (61) rotates in one direction about the central axis (64), and the striking end (614) of the pressing hole 825 of the striking guide (82) in one direction. After striking with strong force while rotating, the end of the striking member 61 is caught by the stopper 25 and stopped.

The impact guide portion 82 hit by the striking member 61 as described above, as shown in Figure 7d, the pressing hole 826 striking by the striking member 61 acts in the side while rotating in the striking direction It acts to the front and guides while accurately moving forward along the slide hole 821 of the connecting member 81 through the slide rod 822 assembled to the guide 823, the pressure port 826 is seated The inner surface of the sphere 823 presses the tip portion 711 of the drill pin 71 uniformly in a straight line.

The punching pin 71 is pressurized in this way, the engaging piece 712 is caught in the restoring spring 72 is installed on the front surface of the gas cylinder inside the connecting member 81 along the drilling pin guide hole 812 of the connecting member 81 The inclined rear end portion 713 of the drill pin 71, which is moved backwards while being pressed and sharply processed, is inserted through the inlet of the sheet metal of the gas cylinder G, and the gas cylinder G is perforated at the same time.

At this time, the striking member 61 is completed, as shown in Figure 7c, positioned on a diagonal, the puncture pin by the restoring force of the restoring spring 72 installed in the boring pin 71 and the pressure of the exhaust gas 71 returns to its original position to completely open the inlet of the gas cylinder G.

Therefore, the gas discharged from the gas cylinder G is quickly supplied to the air discharge hole 831 of the air discharge member 83 via the gas guide hole 813 of the connecting member 81, and again the gas injection member. The airbag A is instantaneously inflated by supplying it into the airbag A through the injection hole 841 of 84.

The inflated airbag A is forcibly opened while covering the cover covered by the airbag case 16 and is rapidly released between the steering wheel 11 and the driver's front surface as shown in FIG. By forming a buffer protection wall between the steering wheel 11 is to minimize the injury of the driver.

Meanwhile, the airbag system of the present invention operated by the collision of the vehicle as described above, separates the operation means 30 from the receiving means 10, restores the support 50 and the striking portion 60 to its original state. After replacing the gas-filled gas cylinder G, the operation means 30 is assembled to the receiving means 10 in its original state, and the airbag system can be reused.

As described above, the present invention simplifies the receiving means incorporating the actuating means and the airbag into a single set, enables the reuse of the actuating means, and stably locks the striking member to an appropriate speed (about 40 km / h). It can be operated only in the case of a collision, and the locking state is released, so that the center of impact of the rotating striking member can be stably applied to the center of the tip of the punching pin to accurately puncture the gas cylinder, thereby preventing airbag malfunction. In mass production, the quality of the product can be made uniformly, and it is economical because it is reusable and can be easily installed without any power specification in all vehicles shipped without an air bag system. There is an advantage to maximize the driver's injury prevention effect.

Claims (8)

When a strong impact is applied to the front of the vehicle driving at an appropriate speed (about 40 km / h) or more, a punching pin 61 installed so that the striking member 61 elastically installed on the springs 62 and 63 slides on the connecting member 81 ( A steering means 30, which is configured to strike the tip of the tip 71 to puncture the inlet of the gas cylinder G to release the gas to the airbag A, is incorporated in the receiving means 10 in the lower center of the steering wheel 11. In a wheeled airbag system, A pair of springs 62 and 63 and the gas cylinder G are seated in the longitudinal direction from the central one side of the main base 20 mounted on both sides to center the centers of the springs 62 and 63 and the striking member 61. A support member 40 for fixing; A support spring 51 is provided between the inner end of the support member 40 at the center of the main base 20 and is provided up and down, and is elastically installed on the support spring 51 to provide an appropriate speed (about 40 km / h) or more. When a strong impact is applied to the front of the vehicle being driven, the movable weight 52 which is lowered is provided, and when the movable weight 52 is raised by being rotatably connected to the upper end of the support member 40, the movable weight 52 is movable. It is grounded on the upper side of the weight 52 and equipped with a bearing 533 which rolls on the vertical movement of the movable weight 52 to maintain the locking state at the rear end, and when the movable weight 52 descends, the rear end rotates to one side. The locking member 53 is provided to release the locking state, and the tip is pivotably connected to the upper center of the support member 40 so that the locking member 53 maintains the locking state. (53) stops downward movement and at the same time When the striking member 61 stops the operation by walking the tip, and the locking member 53 is rotated to release the locking state, the upper end is resiliently installed by the force of the springs 62 and 63 installed on the striking member 61. A movable part 50 provided with a movable lever 54 which moves upward to move away from the striking member 61; When the striking member 61 is operated, the striking guide portion 82 is formed on the rear surface of the connecting member 81 so as to accurately guide the punching pin 71 in a straight line while rolling friction with the rear end 614 of the striking member 61. Airbag system with a built-in steering wheel, characterized in that the configuration. The method of claim 1, wherein the main base 20, Guide grooves 22 are formed on the circumference so as to protrude bosses 21 on the inner side of the square plate, and the installation grooves 23 through which the screw holes penetrate in a vertical line with the bosses 21 are spaced at a predetermined interval. Is formed, the guide space 24 is provided in the interior of the installation groove 23, the steering wheel built-in airbag system, characterized in that the stopper 25 is provided around the guide groove (22). The method of claim 1, wherein the support member 40, A rectangular operating space 411 penetrates in the longitudinal direction in the upper side thereof, and an installation hole 41 is formed in the lower portion thereof and is mounted in the installation groove 23 of the main base 20. An upper boss 412 through which the guide hole 412a penetrates downwards is provided on a vertical line facing the boss 21 of 20, and a coupling hole 413 penetrates below the operating space 411. The inner side of the lower end of the operating space 411, the rotary support hole 414 penetrates in a horizontal direction, and the guide wheel 415 is formed on one side of the upper surface of the operating space 411, the steering wheel built-in airbag system, characterized in that . The method of claim 1, wherein the movable weight 52, The upper end portion of the cylindrical steel bar is thinly formed, and a receiving groove 521 is formed to accommodate the support spring 51 at the bottom thereof, and a guide hole 522 penetrates up and down at the center thereof to engage the support member 40. After inserting into the guide hole 522 of the movable weight 52 from the top of the ball 413, the lower end is provided with a support rod 523 is mounted to the inner center of the seating space 24 of the main base 20 Airbag system with built-in steering wheel. The method of claim 1, wherein the locking member 53, The through hole 531 is rotatably penetrated into the rotary support hole 414 of the support member 40, and a seating surface 532 is horizontally formed at one side thereof, and a pressing hole of the movable weight 52 is provided. 522 is a steering wheel, characterized in that the bearing 533 is grounded on the upper side is formed in the lower portion, the support rod 534 is mounted to the rotary support hole 414 by passing through the guide hole 531 Built-in airbag system. The method of claim 1, wherein the movable lever 54, The first support piece 542 is penetrated through the guide hole 415 of the support member 40 so as to be rotatable, and is seated on the seating surface 532 of the locking member 53 at one side. The second support piece 543 is formed to protrude downward to orthogonal to the first support piece 542 about the through-hole 541 to control the rotation of the striking member 61, the through Steering wheel built-in airbag system, characterized in that the support rod (544) is formed to pass through the ball (541) is mounted to the guide hole (415). The method of claim 1, wherein the hitting guide 82, A slide rod 821 is provided inside the connecting member 81 so as to face the same line as the guide hole 812 of the connecting member 81, and is mounted to slide in the slide hole 821. ) Is provided, the receiving groove 824 is formed to accommodate the end of the slide rod 822, the guide 823 formed with a guide groove 825 to be at least half of the garden at one central end is provided facing the And a bearing pressing hole 826 mounted to the guide groove 825, and a fixing bolt coupling the guide hole 823 to prevent the bearing pressing hole 826 from being separated from the guide groove 825. Air steering system with a built-in steering wheel, characterized in that (827) is provided. The method of claim 1, Airbag system with a built-in steering wheel, characterized in that the side wall of the airbag support (161) joined to the end face of the airbag (A) in the airbag case (16) of the receiving means 10 is configured to be foldable.

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