KR101791499B1 - Buckle moving system of safety belt for vehicle - Google Patents

Abstract

The present invention can be applied not only to a buckle lift function in which a passenger of a vehicle can comfortably wear a seat belt but also to a pretensioner function and a load limiter function, It is an object of the present invention to provide a buckle moving system of a seat belt.
A buckle moving system for a seat belt for a vehicle according to an embodiment of the present invention includes an actuator module 200 for moving the buckle in a buckle lifting direction or a buckle returning direction, And an actuator module control unit 400 electrically connected to the actuator module control unit 400 to control the actuator module 200. The actuator module 200 is electrically connected to the actuator module control unit 400, A plurality of solenoid portions 230 disposed in the plurality of solenoid portions 230 and a nonmetallic wall 240 formed in a fixed shape in a strip shape along the arrangement direction of the plurality of solenoid portions 230, ) And the buckle are connected to each other through the buckle connector portion, and a buckle-up direction or a buckle- And the metal moving assembly 140 is moved so that the actuator module control unit 400 can control the movement of the various solenoid units 230 in response to various electrical control signals And the metal moving assembly 140 is mechanically contacted with or released from the non-metallic wall 240 in accordance with the moving speed of the buckle and the tension acting on the buckle.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a buckle moving system for a vehicle seat belt,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a buckle moving system for a seat belt for a vehicle, and more particularly, to a buckle moving system for a seat belt for a vehicle, which uses a solenoid configuration to implement a buckle lift function, a pretensioner function and a load limiter function.

Background Art [0002] Conventionally, a safety belt for a vehicle is a type of safety device for protecting a passenger in the event of a vehicle collision. The safety belt is a device for protecting the occupant from a danger of a large injury by catching the body of the vehicle occupant to be.

In recent years, in order to provide convenience and safety of wearing the seat belt for a vehicle, a buckle lift function for lifting and returning a buckle used for a seat belt for a vehicle, as well as a safety function for a vehicle that implements a pretensioner function and a load limiter function A buckle moving system of a belt system is required.

The buckle lift function allows the seated occupant to easily attach the tongue of the seat belt to the buckle by recognizing the vehicle door when the vehicle occupant opens the vehicle door to lift the buckle upward, This combined buckle means a function of retracting downward again and is typically implemented by a small motor.

In the pretensioner function, when the front collision and collision occurs, when the seat belt is loosely fastened, the seat belt is instantaneously wound within approximately 0.12 seconds so that the tension acting on the seat belt is improved, Means a function of holding an occupant's body with a larger tension in advance to reduce injury that a passenger may wear, and is usually implemented by a chemical explosion method or a gas inflation method.

In addition, the load limiter function is a function of preventing an excessive impact from being applied to the occupant due to the restraining force of the seat belt in the event of a frontal collision and a collision, and an operation load exceeding a reference value (for example, 5 kN or more) Means a function of releasing a certain amount of the seatbelt when operated, and is usually implemented in a digressive type and a dual stage type.

However, since the pretensioner function of the chemical explosion system or the gas inflation system and the load limiter function of the degressive tie or the dual stage type are different from each other in implementation method, it is difficult to implement them together, Is structurally very difficult, and even if the pretensioner function, the load limiter function, and the buckle lift function are implemented together, the configuration becomes very complicated.

Accordingly, there is a need for a novel method capable of simultaneously implementing the pretensioner function and the load limiter function in a manner other than that described above. For example, Patent Document 1 discloses a buckle device in which a pretensioner function and a buckle- . However, in Patent Document 1, the load limiter function can not be performed. Therefore, there is a problem that a space for installation in a vehicle is large, and a motor used for the pretensioner function is not suitable for a chemical explosion type or gas inflation type, There is a problem that the pretensioner function can not be performed in some cases.

Korean Patent Registration No. 10-1366609

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a vehicle occupant protection system that can implement a pretensioner function and a load limiter function, It is another object of the present invention to provide a buckle moving system for a seatbelt for a vehicle which is simple in construction so as to be mounted using a minimum installation space.

As a means for solving the above problems, a buckle moving system for a seat belt for a vehicle according to an embodiment of the present invention includes an actuator module for moving a buckle in a buckle lifting direction or a buckle returning direction, and an actuator module electrically connected to the actuator module And an actuator module control unit for controlling the actuator module, wherein the actuator module includes a plurality of solenoid units electrically connected to the actuator module control unit, the plurality of solenoid units being arranged in a row, A non-metallic wall formed and fixed in a strip shape along a placement direction of a plurality of solenoid portions and a buckle are connected through a buckle connector portion and are movable in a buckle lifting direction or a buckle returning direction in an inner space of the plurality of solenoid portions Installed metal Wherein the movement of the metal moving assembly is electrically controlled by the actuator module control by supplying various electrical control signals to each of the plurality of solenoid portions, Is mechanically contacted with or released from the nonmetal wall in accordance with the tension acting on the nonmetal wall.

In the buckle moving system for a seatbelt according to the present invention, preferably, the metal moving assembly has a columnar shape having a tapered portion, and has a metal-tightening portion and a tapered portion connected to the buckle through the buckle connector portion A metallic contact portion formed on one side of the metallic pushing portion so as to slidably abut on one side of the metallic pushing portion and the other side mechanically close to or to be released from the nonmetal wall; And a metal elastic clip which clips the one end of the metal tightened portion together with the metal tightened portion with the bent wing portion.

In the buckle moving system for a seat belt for a vehicle according to the above embodiment, preferably, in the case of lifting the buckle, the actuator module control unit sequentially applies a voltage to the plurality of solenoid units as the electric control signal When the metal moving assembly is moved in the buckle lift direction and the buckle is returned in the opposite direction to the lift direction by blocking the voltage in the previous step while the voltage is applied to the plurality of solenoid portions, The metal moving assembly is moved in the buckle returning direction by blocking the voltage of the previous step while being applied as the electric control signal.

Preferably, in a buckle moving system for a seat belt for a vehicle according to the present invention, preferably, when a vehicle crash occurs, the actuator module control unit controls the buckle to reverse the voltage to the plurality of solenoid units in a direction opposite to the lift direction Moving the metal moving assembly in the buckle return direction by blocking the voltage in the previous step while applying it as an electrical control signal, wherein the moving speed of the metal moving assembly is less than 0.12 seconds And the overall width of the metal moving assembly in a direction perpendicular to the direction of movement is kept constant during travel.

In the buckle moving system for a seat belt for a vehicle according to the present invention, preferably, when a vehicle crash occurs, the actuator module control unit applies a predetermined voltage to the plurality of solenoid units, Wherein when the movement of the movable assembly is stopped by an electric force and the tensile force applied to the buckle is greater than the electrical force and avalanche breakdown occurs, the metal contact surface of the metal contact part of the metal moving assembly is pressed against the non- The metal moving assembly is moved in the buckle lifting direction.

According to a preferred embodiment of the present invention, not only a buckle lifting function in which a passenger of a vehicle can comfortably wear a seat belt, but also a pretensioner function and a load limiter function can be implemented together, The present invention can provide a buckle moving system for a seat belt for a vehicle that is simple in construction.

1 is a perspective view schematically showing a driving state of a buckle moving system of a seat belt for a vehicle.
Fig. 2 is an exploded perspective view for explaining a coupling relationship between respective components constituting the buckle moving system of Fig. 1; Fig.
Fig. 3 is an exploded perspective view showing the metal moving assembly of the buckle moving system of Fig. 1 and the respective constituent parts constituting the metal moving assembly.
Fig. 4 is an explanatory view for explaining a state where a non-metallic wall used in the buckle moving system of Fig. 1 is installed. Fig.
5 is an explanatory view showing the principle of solide driving of the buckle moving system of Fig.
FIG. 6 is a view showing a buckle moving system of FIG. 1 including some enlarged views for explaining a driving principle for performing a buckle lift function, a pretensioner function and a load limiter function.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a seat belt buckle moving system according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a perspective view schematically showing a driving state of a buckle moving system 100 of a seat belt for a vehicle.

1, a vehicle seat belt buckle moving system 100 (hereinafter, simply referred to as a buckle moving system) includes a buckle 110 to which a tongue (not shown) of a vehicle seat belt is coupled, A bellows 202 formed between the buckle 110 and the actuator module 200 and a bellows 202 formed between the buckle 110 and the actuator module 200 to move the actuator module 200 up and down (i.e., move in the buckle lift direction or the buckle return direction) And a module fixing portion 210 for fixing the vehicle seat to the vehicle seat.

The bellows 202 surrounds a buckle connector (for example, a wire-shaped connector; described later) 120 for moving the buckle 110 in the buckle lifting direction or the buckle returning direction as a corrugated pipe, So that foreign substances do not enter the buckle connector or the actuator module 200.

The actuator module 200 is electrically connected to the actuator module control unit 400. The actuator module 200 is configured to raise the buckle 110 in the buckle lift direction or to move the buckle 110 in the buckle return direction in accordance with the control signal received from the actuator module control unit 400 Descend.

The actuator module control unit 400 is electrically connected to the vehicle ECU 410 and controls the actuator module 200 according to various control signals received from the vehicle ECU 410. [

The vehicle ECU 410 is a control device for controlling all the electronic components installed in the vehicle, and performs control on the engine of the vehicle, control on the door, control on various display devices, and control on various sensors do. For example, when the passenger opens the door of the vehicle to board the vehicle, the vehicle ECU 410 receives an electric signal from the sensing sensor that senses that the door of the vehicle is open, , A display device, and the like), detects whether the seated occupant has inserted and fixed the tongue of the seat belt into the buckle 110, and performs a function of generating a warning sound when the seat belt is not inserted.

In addition, when the collision detection sensor 420 detects a collision of the vehicle, the vehicle ECU 410 receives the collision signal from the collision detection sensor 420 and outputs the collision signal to the airbag control device (Not shown) and the actuator module control unit 400.

1, the vehicle ECU 410 receives the collision signal from the collision detection sensor 420 and transmits the received collision signal to the actuator module control unit 400, (Not shown).

The actuator module control unit 400 controls the actuator module 200 to operate according to the buckle-up function or the pretensioner function, or to operate the actuator module 200 according to the load limiter function, Or a combination of these functions.

Next, with reference to FIG. 2, the coupling relationship between the respective components of the actuator module 200 will be described.

Fig. 2 is an exploded perspective view for explaining a coupling relationship between respective components constituting the buckle moving system 100 of Fig.

The actuator module 200 includes a plurality of non-metallic partitions 220, a plurality of solenoid parts 230, a non-metallic wall 240, a metal moving assembly 140, and a housing 250, as shown in FIG. And the metal moving assembly 140 includes a metal elastic clip 130, a metal tightening portion 132, and a metal clamping portion 133. The metal moving assembly 140 may further include a return spring 131 between the metallic resilient clip 130 and the metallic contact portion 132.

As shown in FIG. 2, the plurality of solenoid portions 230 are arranged in a line and two or more solenoid portions 230 having the same shape are arranged in a row, and a non-metal partition 220 is interposed therebetween. 5, each of the solenoid portions 230 is formed in a square cylindrical shape with an iron core and a coil, and a space is formed at a central portion thereof. A plurality of solenoid portions 230 are arranged in a row, And one communicating space is formed, and the connected space becomes a space through which the metal moving assembly 140 corresponding to one plunger can be inserted and moved. The solenoid unit 230 according to this embodiment is formed in a square cylindrical shape by an iron core and a coil. However, the solenoid unit 230 according to the present embodiment is not limited thereto and may be formed solely of a coil. The winding method of the iron core and the coil is not limited. The shape of the cylinder may be different.

As shown in FIG. 2, the plurality of non-metal partitions 220 are formed in a thin plate shape having a hole formed at the center thereof, and are sandwiched between the plurality of solenoid parts 230, as described above. At this time, the holes formed at the center of the plurality of non-metal partitions 220 are communicated with the spaces formed by arranging the plurality of solenoid parts 230 in a row so as not to interfere with one another. One space formed by a hole formed at the center of a plurality of non-metal partitions 220 and a space formed by arranging a plurality of solenoid parts 230 in a row is hereinafter referred to as an "assembly moving space ".

2, the assembly moving space is formed in a square pillar shape in a plurality of solenoid portions 230 arranged in a line, but the present invention is not limited to this, and a circular columnar shape or another columnar shape .

On the other hand, non-metallic walls 240, which are formed in a long strip shape along the buckle lift direction, are inserted into both sides of the assembly moving space formed in a square pillar shape in the plurality of solenoid portions 230 arranged in a row according to this embodiment . One side of the non-metallic wall 240 is fixed in contact with one surface of the plurality of solenoid portions 230 on the inner space side, and the other surface of the non- Lt; / RTI > The other surface of the non-metallic wall 240 is composed of a rough surface having a high roughness or a serrated surface (or a rough surface) so that the friction force is large. 2, two nonmetallic walls 230 are attached to the assembly moving space, and the other surface exposed to the assembly moving space of the two nonmetal walls 230 has a frictional force A surface having a large rough surface or sawtooth shape is formed and this exposed surface is brought into close contact with one surface (i.e., metal contact surface) of the metal contact portion 132 of the metal moving assembly 140 to be described later, to be.

The assembly moving space is a space in which the metal moving assembly 140 is inserted and can be moved in the buckle lifting direction or the buckle returning direction. The metal moving assembly 140 is moved slightly away from the exposed surface of the non-metallic wall 240 so as not to be in contact with the exposed surface. The specific structure for allowing the metal moving assembly 140 to move smoothly in the buckle lifting direction or the buckle returning direction in a state that the metal moving assembly 140 is not in contact with the exposed surface of the nonmetal wall 240 but slightly spaced is not particularly limited, Any configuration that can be selected by a person skilled in the art can be employed.

 The metal moving assembly 140 is formed of a metal in one module form so as to function as a metal plunger of the solenoid portion 230 and includes a metal elastic clip 130, a metal tightening portion 132, 133). As described above, the metal moving assembly 140 may further include a return spring 131 between the metal elastic clip 130 and the metal contact part 132. [

A wire-shaped buckle connector 120 is connected and fixed to the metal moving assembly 140. Therefore, when the metal moving assembly 140 moves in the buckle lift direction, the buckle 110 connected to the buckle connector 120 also moves in the buckle lift direction. When the metal moving assembly 140 moves in the buckle buckle direction, 110 also move in the buckle return direction.

According to the present embodiment, the housing 250 is a quadrangular tube having a metal moving assembly 140, a plurality of solenoid portions 230, a plurality of partitions 220, and a non-metal wall 240 Are arranged in a combined state.

The plurality of solenoid units 230 are electrically connected to the actuator module control unit 400 as shown in FIG. The actuator module control unit 400 controls the metal moving assembly 140 in the assembly moving space by supplying or blocking power to each of the plurality of solenoid units 230 sequentially or intermittently or in an intended other way, In the buckle lift direction or the buckle return direction. The actuator module control unit 400 moves the metal moving assembly 140 according to a buckle lift function, a pretensioner function, a load limiter function, or a combination of these functions. This will be described in more detail later.

That is, the buckle moving system of the seat belt for a vehicle includes an actuator module 200 for moving the buckle in the buckle lifting direction or the buckle returning direction, and an actuator module 200 electrically connected to the actuator module 200 to control the actuator module 200 The actuator module 200 includes a plurality of solenoid units 230 electrically connected to the actuator module control unit 400 and arranged in a row in series, Metal wall (240) formed in a long strip shape along the arrangement direction of the plurality of solenoid portions (230) and the buckle are connected to each other through a buckle connector portion, The metal moving assembly 140 installed in the inner space of the solenoid portion 230 so as to be movable in the buckle lifting direction or the buckle returning direction, And the movement of the metal moving assembly 140 is electrically controlled by the actuator module control unit 400 by supplying various electrical control signals to each of the plurality of solenoid units 230, Is mechanically contacted with or released from the non-metallic wall (240) in accordance with the moving speed of the buckle and the tension acting on the buckle.

 Next, the structure of the metal moving assembly 140 will be described with reference to FIG.

FIG. 3 is an exploded perspective view of the metal moving assembly 140 in the buckle moving system 100 of FIG. 1 and the constituent elements of the metal moving assembly 140 in an exploded manner.

3 (a) shows the structure in which the metal moving assembly 140 is connected to the buckle 11 through the buckle connector part 120. The metal moving assembly 140 is in the form of a module and is connected to the buckle 110 through the buckle connector portion 120. As described above, since the metal moving assembly 140 functions as a metal plunger moving in the inner space of the solenoid portion 230, the metal moving assembly 140 is formed as one module, and each of the components is made of metal .

A metal elastic clip 130 is shown in FIG. 3 (b). The metal elastic clip 130 is formed in a shape in which the rectangular elastic plate is bent in a " C "shape, and a through hole 134 is formed at the center thereof. The bent wings on both sides of the metal elastic clip 130 clip one end of the metal contact portion 132 so that the metal contact portion 132 can be resiliently displaced. The through hole 134 is a hole into which one end of the buckle connector 12 is inserted.

In Fig. 3 (c), the metal-sealed portion 133 is shown. The metal-sealed portion 133 is formed in a square pillar shape having a tapered portion, and an insertion hole 135 through which one end of the buckle connector portion 120 can be inserted is formed at a central portion in the longitudinal direction. A fixing mechanism for fixing the buckle connector portion 120 is provided in the metal encapsulation portion 133 through a fixing hole communicating with the insertion hole 135 in a direction perpendicular to the insertion direction of the buckle connector portion 120, (For example, fixed by rotation of the bolt) 136 is formed.

In Fig. 3 (d), the metal contact portion 132 is shown. The metal contact part 132 is formed of a rectangular metal plate having both sides and has one surface abutting one surface of the metal-encapsulated part 133 and the other surface being a surface of the nonmetal wall 240 shown in FIG. 2 It is a surface that can be brought into close contact. 3 (d), on the other surface of the metal contact portion 132, a metal contact surface 138 which is in close contact with one surface of the nonmetallic wall 240 and a wing of the metal elastic clip 130 A concave clip accommodating portion 137 is formed so as to be accommodated. The metal contact surface 138 is formed of a rough surface or a serrated surface or a rugged surface in order to generate frictional force.

Hereinafter, the specific coupling state of the metal moving assembly 140 will be described. The metal moving assembly 140 is connected and fixed to the buckle 110 through the buckle connector 120 as one module type and one end of the wire shaped buckle connector 120 is connected to the metal elastic clip 130 Passes through the through hole (134) and is inserted into the insertion hole (135) of the metal enclosed part (133). The buckle connector portion 120 inserted into the insertion hole 135 is inserted into the insertion hole 135 through a fixing hole communicating with the insertion hole 135 in a direction perpendicular to the insertion direction, Fixed) As shown in Fig. 3 (a), two metal contact portions 136 are provided so that the surfaces of the metal contact portions 136 on which the metal contact surface 138 is not formed face each other And then the metal clad 133 is inserted between the two metal clips 136 so as to come into close contact with the metal clad 136 and then the two clips of the metal elastic clip 130 are opened to form a corresponding metal close- Clips to be accommodated in the clip accommodating portion 137 of the portion 136. The two metal tight fitting portions 132 and the metal tight gripping portions 133 sandwiched therebetween are held tightly by the clip force of the elastic clip 130 so that the two metal tight fitting portions 132 are kept in a holding state so as not to move with each other.

That is, the metal moving assembly 140 is formed into a columnar shape having a tapered portion and is formed of a double-sided metal plate having a tapered portion and a metal-tightening portion 133 connected to the buckle through the buckle connector portion 120, A metal contact portion 132 slidably abutting against one surface of the metal-encapsulated portion 133 and the other surface mechanically adhered to or released from the non-metallic wall 240; And a metal elastic clip 130 which is bent in a shape of a curved wing portion and which clips one end of the metal tightening portion 132 together with the metal hardened portion 133.

At this time, the width of the metal moving assembly 140 is constant. That is, in FIG. 5, the width (circumferential width of the cylinder) is constant, as shown by modeling the metal moving assembly 140 in the form of a cylindrical metal plunger. 6, in which the cross section along the buckle lift direction or the buckle return direction is shown for the metal moving assembly 140, the width is constant during the movement, as viewed in the drawing, the closer to the buckle return direction, The thickness of the metal contact part 132 becomes thicker although the thickness of the metal contact part 133 is thinner but the thickness of the metal contact part 132 becomes thicker as it goes toward the buckle lift direction And is formed so as to be thin.

In addition, the metal moving assembly 140 is modeled as one metal plunger, as shown in FIG. 5, because each structure is made of metal and formed as one module.

Next, a state in which the metal moving assembly 140 shown in FIG. 3 (a) is inserted into an assembly moving space formed inside the plurality of solenoid units 230 will be described with reference to FIG.

4 illustrates a state in which the metal moving assembly 140 is inserted into the assembly moving space of the plurality of solenoid portions 230 and a state in which the non-metallic wall 240 is formed in the plurality of solenoid portions 230 Fig.

Fig. 4 shows a state in which all exploded perspective views shown in Fig. 2 and Fig. 3 are combined. A plurality of non-metal partitions 220 are sandwiched between the plurality of solenoid parts 230 and the metal moving assembly 140 is movably inserted into the assembly moving space in the plurality of solenoid parts 230. 4, one of the plurality of solenoid portions 230 is shown as being transparent, and the non-metallic wall 240 is formed inside the solenoid portion 230. [

5 and 6, by controlling the plurality of solenoids 230 by the actuator module control unit 400, the buckle moving system 100 can control the emergency seat belt locking function, the buckle lift function, the pretensioner function And explains the concept and process of performing the process.

5 is an explanatory view showing the principle of solving the buckle moving system 100 of FIG.

FIG. 6 is a view showing a driving principle for performing the buckle lifting function, the pretensioner function, and the load limiter function in the buckle moving system 100 of FIG. 1, including a partial enlarged view.

First, with reference to Fig. 5, the principle of solving the buckle moving system 100 will be described.

In FIG. 5, the metal moving assembly 140 is characterized in that all features that make up the metal moving assembly 140 are made of metal, and the overall size of the combined configuration is the width Is constant during the movement), it is modeled as a metal plunger.

5, the plurality of solenoid portions 230 are arranged in series in the buckle moving direction. Each of the solenoid portions 230 is formed of a coil wound with an iron core, and a plurality of solenoid portions Two nonmetallic walls 240 are formed along the two inner sides of the base plate 230, thereby forming an assembly moving space. Thus, the metal moving assembly 140 moves in the buckle lift direction or the buckle return direction along the assembly moving space formed substantially between the two non-metallic walls 240.

On the other hand, although the distance between the metal moving assembly 140 and the two nonmetallic walls 240 is usually spaced apart, in case of an emergency such as a vehicle collision, when the occupant intends to jump out rapidly, The metal contact part 136 of the metal moving assembly 140 is extended in the width direction of the metal moving assembly 140 to form the metal contact surface 138, And the abutment against the non-metallic wall 240 generates frictional force, thereby preventing movement of the buckle and preventing the occupant from suddenly bouncing forward.

On the other hand, when a DC voltage is applied to the coil of one solenoid unit 230, the metal moving assembly 140 inside the solenoid unit 230 functions as a metal plunger and moves. For example, if a forward positive DC voltage is applied to the coil of one solenoid portion 230 (shown as (1)) for convenience of explanation in FIG. 5, It is assumed that the metal moving assembly 140 is set to move in the lift direction and, conversely, when the reverse negative DC voltage is applied, the metal moving assembly 140 is set to move in the buckle return direction. However, it is also possible to set it in reverse.

Accordingly, the actuator module control unit 400 sequentially applies the negative DC voltage to the plurality of solenoid units 230 in the order of (1), (2), (3), ..., When the negative direct current voltage is cut off, the metal moving assembly 140 moves in the buckle return direction, that is, (1), (2), (3),.

Conversely, the actuator module control unit 400 sequentially applies the positive DC voltage to the plurality of solenoid units 230 in the order of ..., (3), (2), and (1) When the definite DC voltage is cut off, the metal moving assembly 140 moves in the buckle lifting direction, that is, in the order of ..., (3), (2), (1).

Also, as the DC voltage is applied to the plurality of solenoid units 230 and the cut-off period is increased by the actuator module control unit 400, the speed of the metal moving assembly 140 also increases. This speed is used to set the pulling speed when pulling the seat belt fastened through the buckle 110 among the functions of the pretensioner described later at a high speed.

When the positive or negative direct current voltage is applied to any one or more of the plurality of solenoid portions 230 by the actuator module control portion 400, the metal moving assembly 140 may move the solenoid portions 230 It is not moved by the magnetic force but is held in the holding state and is not moved. At this time, as the applied positive or dc voltage is increased (that is, the applied power is increased), the metal moving assembly 140 is not moved, and the holding force is also increased. This force is used to set the limit value of the tension applied to the seat belt through the buckle 110 among the functions of the load limiter described later.

The movement of the metal moving assembly 140 by the actuator module control unit 400 tends to be more accurate as the density of the plurality of solenoid units 230 increases.

Accordingly, those skilled in the art will appreciate that the number and size of the solenoid portions 230, the magnitude of the applied voltage, the magnitude of the current, and the like, as well as the moving speed of the metal moving assembly 140, .

<Function to automatically lock the movement of the seat belt in an emergency such as an accident>

3 (a), the metal moving assembly 140 connected to the buckle 110 through the buckle connector 120 is moved by the elastic force of the metal elastic clip 130, The width of the assembly 140 remains constant during movement. As shown in Fig. 5, the state at this time is a state in which the metal plunger can be modeled, and the width is constant during the movement. However, when the occupant tends to bulge forward in an emergency such as an accident (that is, when the tension of the seat belt is suddenly increased due to abrupt movement of the seat belt), the buckle 110 As shown in Fig. 6 (b), the metal-hardened portion 133 is instantaneously moved in the buckle moving direction and the tapered portion 133 formed at the metal- The metal abutting portion 132 is pushed along the surface (or the tapered portion) of the metallic abutting portion 132 The wall 240 is abutted and a frictional force is generated. This frictional force restrains the movement of the buckle and automatically locks the movement of the seat belt connected through the tongue coupled to the buckle.

Meanwhile, the metal moving assembly 140 may further include a return spring 131 between the metal elastic clip 130 and the metal contact portion 132. The return spring 131 functions to restore the metal-clamped portion 133 to its original position when the urgent situation such as an accident or the like is released (in this case, the clamping force is smaller than the elastic force of the metal elastic clip 130) The metal contact surface 138 of the metal contact portion 132 and the nonmetal wall 240 are separated from each other by the elastic force of the metal elastic clip 130 as shown in Fig. So that it can be moved freely.

<Buckle lift function>

The buckle lift function allows the seated occupant to easily engage the tongue of the seat belt with the buckle by recognizing the vehicle door when the vehicle occupant opens the vehicle door to ride and lift the buckle upward, The combined buckle is a function of being retracted downward again.

As described above, for example, when the buckle is to be lifted, the actuator module control unit 400 controls the plurality of solenoid units 230 in the order of ..., (3), (2) (3), (2), (1), (2), and (3) by sequentially closing the positive DC voltage at the previous stage while sequentially applying the positive DC voltage to the metal moving assembly .

Conversely, in the case of returning the buckle to the home position, the actuator module control unit 400 controls the plurality of solenoid units 230 to be (1), (2), (3),. (1), (2), (3), (3), and (4) in the buckle return direction by blocking the negative DC voltage in the previous step while sequentially applying the negative DC voltage in the order of ... in the order of.

<Function of pretensioner>

The pretensioner function is a function of instantaneously winding the seat belt within approximately 0.12 seconds when the front collision and collision occurs and the seat belt is loosely fastened to improve the tension acting on the seat belt, It is a function to hold the occupant's body with greater tension and reduce the injury that the occupant can wear.

3 (a), the metal moving assembly 140 connected to the buckle 110 through the buckle connector 120 is moved by the elastic force of the metal elastic clip 130, The width of the assembly 140 remains constant during movement. As shown in Fig. 5, the state at this time is a state in which the metal plunger can be modeled, and the width is constant during the movement.

1, the collision detection sensor 420 senses the collision detection signal and transmits a collision detection signal to the vehicle ECU 410, as shown in FIG. 1, when the occupant intends to bulge forward in an urgent situation such as a frontal collision And the vehicle ECU 410 transmits a collision detection signal to the actuator module control unit 400. 5, the actuator module control unit 400 sequentially applies the negative DC voltage to the plurality of solenoid units 230 in the order of (1), (2), (3), ... When the negative DC voltage in the previous step is cut off, the metal moving assembly 140 moves in the buckle return direction, that is, (1), (2), (3),. At this time, the moving speed of the metal moving assembly 140 and the tension acting on the seat belt are set so that the seat belt can be instantaneously wound within about 0.12 seconds to hold the occupant's body before the occupant's body moves forward.

3 (a) and FIG. 6 (a), the metal moving assembly 140 is moved by the elastic force of the metal elastic clip 130 so that the width of the metal moving assembly 140 moves And is instantaneously moved in the buckle return direction while maintaining the constant state (within approximately 0.12 seconds). By this momentary movement, the loosely seated seat belt is pulled. In this case, the tension acting on the seat belt can be set in advance as a value that does not damage the occupant's body, and this value is a form of a voltage value or a power value applied to the plurality of solenoid portions 230.

That is, when a vehicle collision occurs, the actuator module control unit 400 applies a voltage as an electric control signal to the plurality of solenoid units 230 in the direction opposite to the lift direction of the buckle, The movement of the metal moving assembly 140 is completed when the movement of the metal moving assembly 140 is completed within 0.12 seconds after the occurrence of a crash of the vehicle And the overall width of the metal moving assembly 140 in a direction perpendicular to the moving direction is kept constant during the movement.

<Load limiter function>

The load limiter function is used to prevent an excessive impact on the occupant due to the restraint force of the seatbelt when a frontal collision or a collision occurs. If an operating load greater than a reference value (for example, 5 kN or more) It is a function to release a certain amount of seat belt.

3 (a), the metal moving assembly 140 connected to the buckle 110 through the buckle connector part 120 normally has the metal elastic clip 130, The width of the metal moving assembly 140 is kept constant during the movement. As shown in Fig. 5, the state at this time is a state in which the metal plunger can be modeled, and the width is constant during the movement.

However, in the event of an emergency such as a frontal collision, the occupant tries to pop out as the driver moves forward rapidly. As described above, the loosened seat belt is pulled in a short time by the pretensioner function to keep the seat belt in a state of being held by the occupant's body. However, if the forward collision is so strong that the tension acting on the seat belt becomes the reference value or more, It is desirable to minimize the damage to the body of the occupant by releasing a certain amount of the seatbelt (load limiter function) rather than keeping the body of the occupant in a holding state.

 Therefore, in the event of an urgent situation such as a forward collision, when the occupant tries to bulge forward while rapidly moving forward, the seatbelt loosened by the pretensioner function is first pulled and brought into close contact with the occupant's body (on the other hand, The actuator control module 400 maintains a constant value without switching (applying or blocking) a positive or negative DC voltage (substantially power) to the plurality of solenoid portions 230 Thereby stopping and holding the movement of the metal moving assembly 140. The constant value is a value corresponding to an operating load of, for example, 5 kN, which is a limit value that allows the movement of the metal moving assembly 140 to remain stationary, (I. E., Avalanche breakdown) so that the controller 140 can not be held stationary.

When the avalanche breaks down, the buckle 110, which is coupled through the tongue of the seatbelt, is rapidly pulled with a large tension. As shown in Fig. 6 (b), the metal- The tapered surface (or the tapered portion) formed on the metal tightened portion 133 is pressed against the metal tightened portion 132 (the tightening force is greater than the elastic force of the metal elastic clip 130) The metal contact surface 138 of the metal contact portion 132 and the non-metal wall 240 are in contact with each other to generate a frictional force. This friction force restrains the movement of the buckle and automatically locks the movement of the seat belt connected through the tongue connected to the buckle. However, the tension acting on the seat belt (for example, 5 kN or more) The metal moving assembly 140 moves in the buckle lifting direction (resulting in a certain amount of release of the seat belt after the avalanche break-down) in a state in which friction is generated.

As a result, according to the embodiment of the present invention, by controlling the voltage (or electric power) supplied to the plurality of solenoid portions 230 by the actuator module control portion 400, not only the buckle- So that it is possible to perform a pretensioner function of minimizing the injury to the occupant in the event of a collision by reducing the distance traveled by the occupant in the forward direction and to reduce the load applied to the seatbelt in order to minimize the impact between the seatbelt and the occupant It is possible to perform a load limiter function for relieving the impact by loosening the load.

That is, when a collision occurs in the vehicle, the actuator module control unit 400 applies a predetermined voltage to the plurality of solenoid units 230 and holds the same to move the movement of the metal moving assembly 140 to an electric force And the metal contact surface 138 of the metal contact part 132 of the metal moving assembly 140 is in contact with the metal contact surface 138 of the nonmetal part 132 when the tension applied to the buckle is larger than the electrical force and avalanche breakdown occurs, In a state of being in mechanical contact with the wall 240, the metal moving assembly 140 is moved in the buckle lifting direction.

110: Buckle
120: buckle connector portion
130: Metal Elastic Clip
132: metal contact portion
133: metal mill dip
140: metal moving assembly
200: Actuator module
202: Bellows
220: Non-metallic partitions
230: solenoid portion
240: Non-metallic wall
400: Actuator module control section

Claims (8)

delete An actuator module (200) for moving the buckle in a buckle lifting direction or a buckle returning direction, and
And an actuator module control unit (400) electrically connected to the actuator module (200) and controlling the actuator module (200)
The actuator module (200)
A plurality of solenoid portions 230 electrically connected to the actuator module control portion 400 and arranged in a row,
A non-metallic wall 240 formed in a long strip shape and fixedly disposed along an arrangement direction of the plurality of solenoid portions 230 in an inner space of the plurality of solenoid portions 230,
And a metal moving assembly 140 connected to the buckle through the buckle connector part 120 and movably installed in an inner space of the plurality of solenoid parts 230 in a buckle lifting direction or a buckle returning direction,
The movement of the metal moving assembly 140 is controlled by the actuator module control unit 400 by supplying various electrical control signals to each of the plurality of solenoid units 230,
The metal moving assembly 140 is mechanically contacted with or released from the non-metallic wall 240 according to the moving speed of the buckle and the tension acting on the buckle,
The metal moving assembly (140)
A metal-sealed portion 133 connected to the buckle through the buckle connector portion 120,
And a metal contact portion 132 which is formed by a double-sided metal plate having a tapered portion and whose one surface is slidably abutted against one surface of the metal-encapsulated portion 133 and the other surface is mechanically contacted with or released from the non- ), And
And a metal elastic clip (130) that is bent in a "C" shape to clip the metal tightening portion (132) together with the metal hardened portion (133) Buckle moving system for vehicle seat belt. 3. The method of claim 2,
When the buckle is to be lifted, the actuator module control unit 400 sequentially applies a voltage to the plurality of solenoid units 230 as the electric control signal, 140 in the buckle lift direction,
When the buckle is returned in the direction opposite to the lift direction, the actuator module control unit 400 applies voltage to the plurality of solenoid units 230 in the reverse order of the sequential order as the electric control signal, , Thereby moving the metal moving assembly (140) in the buckle return direction. 3. The method of claim 2,
When a vehicle collision occurs, the actuator module control unit 400 applies a voltage to the plurality of solenoid units 230 in the direction opposite to the lift direction of the buckle as the electric control signal, The moving speed of the metal moving assembly 140 is set such that the movement of the metal moving assembly 140 is completed within 0.12 seconds after the occurrence of a crash of the vehicle , And the overall width of the metal moving assembly (140) in a direction perpendicular to the direction of travel is maintained constant during travel. 3. The method of claim 2,
In the event of a vehicle collision, the actuator module control unit 400 applies and applies a predetermined voltage to the plurality of solenoid units 230 to stop the movement of the metal moving assembly 140 by an electric force And the metal contact surface 138 of the metal contact part 132 of the metal moving assembly 140 contacts the nonmetal wall 140 when the tension applied to the buckle is larger than the electrical force and avalanche breakdown occurs, 240), the metal moving assembly (140) is moved in the buckle lifting direction. An actuator module (200) for moving the buckle in a buckle lifting direction or a buckle returning direction, and
And an actuator module control unit (400) electrically connected to the actuator module (200) and controlling the actuator module (200)
The actuator module (200)
A plurality of solenoid portions 230 electrically connected to the actuator module control portion 400 and arranged in a row,
A non-metallic wall 240 formed in a long strip shape and fixedly disposed along an arrangement direction of the plurality of solenoid portions 230 in an inner space of the plurality of solenoid portions 230,
And a metal moving assembly 140 connected to the buckle through the buckle connector part 120 and movably installed in an inner space of the plurality of solenoid parts 230 in a buckle lifting direction or a buckle returning direction,
The movement of the metal moving assembly 140 is controlled by the actuator module control unit 400 by supplying various electrical control signals to each of the plurality of solenoid units 230,
The metal moving assembly 140 is mechanically contacted with or released from the non-metallic wall 240 according to the moving speed of the buckle and the tension acting on the buckle,
When the buckle is to be lifted, the actuator module control unit 400 sequentially applies a voltage to the plurality of solenoid units 230 as the electric control signal, 140 in the buckle lift direction,
When the buckle is returned in the direction opposite to the lift direction, the actuator module control unit 400 applies voltage to the plurality of solenoid units 230 in the reverse order of the sequential order as the electric control signal, , Thereby moving the metal moving assembly (140) in the buckle return direction. An actuator module (200) for moving the buckle in a buckle lifting direction or a buckle returning direction, and
And an actuator module control unit (400) electrically connected to the actuator module (200) and controlling the actuator module (200)
The actuator module (200)
A plurality of solenoid portions 230 electrically connected to the actuator module control portion 400 and arranged in a row,
A non-metallic wall 240 formed in a long strip shape and fixedly disposed along an arrangement direction of the plurality of solenoid portions 230 in an inner space of the plurality of solenoid portions 230,
And a metal moving assembly 140 connected to the buckle through the buckle connector part 120 and movably installed in an inner space of the plurality of solenoid parts 230 in a buckle lifting direction or a buckle returning direction,
The movement of the metal moving assembly 140 is controlled by the actuator module control unit 400 by supplying various electrical control signals to the plurality of solenoid units 230,
The metal moving assembly 140 is mechanically contacted with or released from the non-metallic wall 240 according to the moving speed of the buckle and the tension acting on the buckle,
When a vehicle collision occurs, the actuator module control unit 400 applies a voltage to the plurality of solenoid units 230 in the direction opposite to the lift direction of the buckle as the electric control signal, The moving speed of the metal moving assembly 140 is set such that the movement of the metal moving assembly 140 is completed within 0.12 seconds after the occurrence of a crash of the vehicle , And the overall width of the metal moving assembly (140) in a direction perpendicular to the direction of travel is maintained constant during travel. An actuator module (200) for moving the buckle in a buckle lifting direction or a buckle returning direction, and
And an actuator module control unit (400) electrically connected to the actuator module (200) and controlling the actuator module (200)
The actuator module (200)
A plurality of solenoid portions 230 electrically connected to the actuator module control portion 400 and arranged in a row,
A non-metallic wall 240 formed in a long strip shape and fixedly disposed along an arrangement direction of the plurality of solenoid portions 230 in an inner space of the plurality of solenoid portions 230,
And a metal moving assembly 140 connected to the buckle through the buckle connector part 120 and movably installed in an inner space of the plurality of solenoid parts 230 in a buckle lifting direction or a buckle returning direction,
The movement of the metal moving assembly 140 is controlled by the actuator module control unit 400 by supplying various electrical control signals to each of the plurality of solenoid units 230,
The metal moving assembly 140 is mechanically contacted with or released from the non-metallic wall 240 according to the moving speed of the buckle and the tension acting on the buckle,
In the event of a vehicle collision, the actuator module control unit 400 applies and applies a predetermined voltage to the plurality of solenoid units 230 to stop the movement of the metal moving assembly 140 by an electric force And the metal contact surface 138 of the metal contact part 132 of the metal moving assembly 140 contacts the nonmetal wall 140 when the tension applied to the buckle is larger than the electrical force and avalanche breakdown occurs, 240), the metal moving assembly (140) is moved in the buckle lifting direction.

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