CN205523810U - Safety device for a vehicle seat - Google Patents

Abstract

The utility model discloses a safety device for vehicle seat, the seat includes the backrest, safety device includes: an impact pad provided at a bottom portion of the seat back; a rod disposed inside the seat back, one end of the rod being connected to the impact pad and the rod being leveraged around a fixed axis inside the seat back; and a cushion pad provided at an upper portion of the seat back and connected to the other end of the rod. According to the utility model discloses, can be through the passenger who slows down the rear seat produced striking and improve vehicle security performance when the in-process of vehicle striking falls to seat the place ahead. By providing the seat back, the cushion pad, and the crash pad separately, the occupant is not affected even when the safety device is operated during a vehicle crash.

Description

Safety device for vehicle seat

technical field

The utility model relates to a safety device for a vehicle seat, which can prevent a passenger sitting on a rear seat from being seated and falling to a front seat when a vehicle collides, preventing the passenger from being damaged.

Background technique

Recently, attention to passenger safety and vehicle functionality and convenience has increased, and the importance of safety devices capable of optimally protecting passengers during a vehicle collision is gradually increasing.

The most representative of the various safety devices installed in the vehicle is a passenger restraint device (such as an air bag device or a seat belt device), which can prevent the occupant from Getting hurt.

Recently, a Pre-Crash-Safety (PCS) control technology has been developed, which, after determining the risk of collision with a vehicle in front, warns the driver of the degree of risk of collision or initiates automatic braking before the collision, thereby making the vehicle and Driver injury is minimized. This pre-collision safety control has a function of maximally restraining passengers by forcibly pulling a seat belt before a collision, that is, a Pre-safe Seat Belt (PSB) function. In addition to this function, various technologies for the safety of the driver in a collision are being developed, and Korean Patent Publication No. 2007-0028962 entitled "Cushioned Vehicle Seat" discloses a device capable of A vehicle seat that protects the spine of an occupant in a side collision.

Generally speaking, however, the devices that have been primarily developed for protecting the occupant and driver of a vehicle in the event of a collision are mostly for the front seat occupants. Of course, this is due to the fact that most injuries occur on the driver's front seat side and the front passenger's seat compared to the rear passenger, although fewer injuries are suffered by the rear passenger in the collision may also be injured. Therefore, a technology is being developed that reduces the risk of passengers in rear seats at the time of a vehicle collision or at the time of a vehicle rear end collision. If the vehicle brakes suddenly during a collision, the unbelted rear seat occupant can be ejected forward, in most cases, when the rear seat occupant's head hits the backrest of the front seat Head injury.

Especially in the case of a frontal collision, the rear seat occupant hits his head against the backrest of the front seat due to the rotational movement of the upper body after moving uncontrollably in the air early in the collision due to inertia, so Hurt. Therefore, it is necessary to propose a safety device for avoiding such rear seat passengers from bumping randomly.

The above information disclosed in the background technology section is only intended to deepen the understanding of the background technology of the utility model, so the information it may contain does not constitute the prior art known to those skilled in the art in this country.

Utility model content

The present invention aims to solve the above-mentioned disadvantages, and one aspect of the present invention is devoted to providing a safety device for a vehicle seat, which can prevent a passenger sitting on the rear seat from hitting the seat and falling into the seat. The situation ahead is present, thereby increasing the safety of the occupant sitting in this seat and the occupant in the rear seat.

A safety device for a seat including a seat back for a vehicle according to an embodiment of the present invention may include: an impact pad provided at the bottom of the seat back; a rod provided inside the seat back , one end of the rod is connected to the impact pad and the rod is leveraged around a fixed shaft inside the seat back; one end.

The impact pad may be arranged such that the distance from the lowest portion of the seat back to the upper side of the impact pad is between 180mm-200mm.

When the impact pad connected to one end of the rod moves in the forward direction of the seat back due to impact at the impact pad, the cushion pad connected to the other end of the rod may surround the The fixed shaft moves in a rearward direction of the seat back.

The safety device for a seat including a seat back for a vehicle of the present invention may further include a return spring for returning the rod to the original position after the rod moves at the fixed shaft. .

The cushion pad and the seat back may be separate.

The impact pad and the seat back may be separate.

According to the utility model, the safety performance of the vehicle can be improved by alleviating the impact generated when the passengers in the rear seats fall to the front of the seats during the collision of the vehicle.

According to the present invention, by separately disposing the seat back, the cushion pad, and the crash pad, passengers are not affected even when the safety device is operated during a vehicle crash.

Description of drawings

The above and other aspects, features and advantages of the present utility model will be more clearly understood through the detailed description presented in conjunction with the accompanying drawings. In these drawings:

1 is a side view of a safety device of a vehicle seat in a normal state according to an embodiment of the present invention;

2 is a view of a frame of a safety device for a vehicle seat according to an embodiment of the present invention;

3 is a side view of the safety device of a vehicle seat subjected to an impact according to an embodiment of the present invention.

detailed description

Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Throughout the specification, the same reference numerals will be used to denote the same elements wherever possible, and repeated descriptions of the same elements will be omitted.

Recently, China has tightened the standards for large passenger cars, wherein, when the front of the vehicle hits, the dummy who is not wearing a seat belt cannot leave the seated state, so the utility model is designed to meet the corresponding standards for large passenger cars, and at the same time Improved safety for passengers seated directly in the front and rear seats.

Therefore, as shown in FIG. 1 , the safety device of the vehicle seat 100 according to the present invention may include: an impact pad 120 disposed at the bottom of the seat back; a rod 140 disposed inside the seat back, One end of the rod is connected to the impact pad 120 and the rod is leveraged around a fixed shaft 150 inside the seat back; and a cushion pad 160 is provided on the upper portion of the seat back and connected to the rod 140 at the other end.

As shown in FIG. 1 , the crash pad 120 is provided at the bottom of the seat back, specifically, the crash pad 120 is provided for the passenger to move forward due to inertia in the case of sudden braking or collision and cause a collision with the front seat. When the backrest is impacted, the impact is used to actuate the safety device. Therefore, a proper position of the crash pad 120 that senses the impact is important to activate the safety device smoothly.

Generally, the passenger's knee is one of the first parts to hit the front seat when the rear passenger moves forward due to inertia. That is, since the knee is the part of the passenger's body closest to the seat in front (for the passenger to sit on). Therefore, since it is most effective to arrange the crash pad 120 near the knees of the passenger of the rear seat, the crash pad 120 according to the present invention is provided at the lower end of the seat back. Preferably, as proposed in the present invention, by setting the impact pad 120 at a distance between 180mm-200mm from the lowest part of the seat back to the upper side of the impact pad, the impact pad 120 can accurately sense the Impact on the knees of the rear passenger.

If the impact to the seat is accurately sensed by the above-mentioned method, the device for preventing the passenger in the rear seat from falling forward will definitely act, and this device is exactly the buffer pad 160 provided by the present invention. The cushion pad functions as a cushion to support the passenger's head from falling forward when the rear passenger falls forward, so that the cushion pad 160 is also used to protect the passenger's head in addition to the normal cushion. In addition, the impact pad 120 is provided to sense the impact from the knees of the rear passenger and is provided at the lower end of the seat back, while the cushion pad 160 is provided to protect the head of the rear passenger and thus is provided at the upper end of the seat back to stably Support the passenger's head. In FIG. 1 , the cushion pad 160 is in a normal state and it can be determined that it is integrated with the seat back, and in FIG. 3 , it can be determined that the cushion pad 160 acts to support the head of the rear passenger when an impact is applied to the crash pad 120 department.

It should be noted that, in the present utility model, the buffer pad 160 and the impact pad 120 are not integrally provided with the seat back but independently provided with the seat back. When the seat back is integrally installed with the cushion pad 160 or the crash pad 120 , there is an advantage in terms of production cost, but more injuries may be caused to passengers on the corresponding seat when the safety device is in operation. Therefore, according to the present invention, by independently installing them, injury to the passenger of the rear seat is prevented and also injury to the passenger sitting on this seat is prevented.

If the crash pad 120 capable of sensing impact and the cushion pad 160 capable of protecting rear passengers are provided, a device capable of operating the bump pad 160 according to the impact sensed by the crash pad 120 is required, for which a separate control unit may be provided to Steps for performing the operation of the cushion 160 . However, this approach has no effect in case the control unit according to the invention operates only in an emergency state and not in a normal state.

Therefore, according to the present invention, a method of operating the cushion pad 160 is proposed as simple and effective as possible, so that the cushion pad 160 and the impact pad 120 are connected by the rod 140, and the rod 140 surrounds the fixed shaft 150 provided inside the seat back Do leverage exercises.

To help understand the structure and operation of the lever 140 , the frame of the safety device of the vehicle seat 100 is shown in FIG. 2 . As shown in FIG. 2, the impact pad is connected to one end of the rod 140, the cushion pad 160 is connected to the other end of the rod 140, and the rod 140 is connected to the fixed shaft 150 (the fixed shaft 150 is connected to the frame of the seat back), so that The rod is movable about a fixed axis 150 in the form of a lever.

With this driving principle, referring to FIG. 3 , when an impact is applied to the impact pad 120, the impact pad 120 moves in the forward direction of the seat back so that the rod 140 moves in the form of a lever around the fixed shaft 150 so that The cushion pad 160 connected to the other end of the rod 140 moves in the rearward direction of the seat back.

That is, according to the present invention, simply by coupling the lever 140 capable of lever movement to the fixed shaft 150 inside the seat back, the cushion pad 160 can properly work without a separate control unit.

Further, according to the utility model, a return spring 170 is also included to return the buffer pad 160 to its original position when the impact disappears from the impact pad 120, and the return spring 170 can be most preferably arranged on the fixed shaft 150 ( The rod 140 performs lever movement around the fixed axis 150).

First, according to the present invention, the safety performance of the vehicle can be improved by alleviating the impact generated when the passengers in the rear seat fall to the front of the seat during the collision of the vehicle.

Secondly, according to the present invention, by separately disposing the seat back, the cushion pad and the crash pad, even when the safety device acts during the collision of the vehicle, it will not affect the passengers.

Although the invention has been described with respect to exemplary embodiments, it will be apparent to those skilled in the art that various changes in form and details can be made without departing from the spirit and scope of the invention as set forth in the appended claims. Therefore, the protection scope of the invention is defined not by the detailed description of the invention but by the appended claims, and differences in the scope of protection should be construed as being included in the invention.

Claims (6)

1. for a safety device for seat, described seat includes backrest, and it is special Levying and be, described safety device includes:

Clashing into pad, it is arranged on the bottom of backrest；

Bar, it is arranged on the inside of described backrest, one end of described bar be connected to described in hit Hit pad and the fixing axle that is centered around within described backrest of described bar does lever motion；And

Cushion pad, it is arranged on the top of backrest and is connected to the other end of described bar.

Safety device for seat the most according to claim 1, it is characterised in that The described pad that clashes into is set to exist from backrest lowermost portion to the distance clashing into the upside padded Between 180mm-200mm.

Safety device for seat the most according to claim 1, it is characterised in that Pad due to the effect of impact at shock pad to described the clashing into of one end being connected to described bar The when that the forward direction of backrest moving, it is connected to the cushion pad of the other end of described bar Rearwardly direction around described fixing axial described backrest moves.

Safety device for seat the most according to claim 1, it is characterised in that Described safety device also includes return spring, and it is used for after described bar moves at fixing axle, Described bar is made to be repositioned to home position.

Safety device for seat the most according to claim 1, it is characterised in that Described cushion pad and described backrest are independent.

Safety device for seat the most according to claim 1, it is characterised in that Described shock pad and described backrest are independent.