KR102497525B1 - Lap pritensioner - Google Patents

Abstract

A wrap pretensioner according to the present invention is operated by an impact applied to a vehicle to move an anchor or buckle of a vehicle, and a space is formed inside a connection unit coupled to the anchor or the buckle to move the connection unit. A pressure unit and a pressure unit for moving the connection unit toward the interior space according to the pressure of the fluid accommodated therein and injecting the fluid toward the interior space by being operated by an impact applied to the vehicle and inside the pressure unit. A wrap pretensioner including an exhaust unit for exhausting fluid received in a direction opposite to the position of the occupant of the vehicle is provided.

Description

Lap pretensioner {LAP PRITENSIONER}

The present invention relates to a wrap pretensioner, and more particularly, to a wrap pretensioner, which moves an anchor or a buckle according to an impact applied to a vehicle to bring webbing into close contact with an occupant, while directing fluid exhausted through an ignition action toward a different direction from the occupant's position. It relates to a wrap pretensioner that exhausts and prevents burns and safety accidents caused by fluid.

When an impact is applied to the vehicle, the withdrawal of the webbing is limited to protect the safety of the occupant so that the occupant's position does not deviate from the seat, thereby preventing secondary damage from safety accidents caused by the vehicle.

However, despite the method for preventing such safety accidents, it is difficult to prevent secondary damage only by limiting the withdrawal of the webbing because the fixation of the anchor or buckle fixing the webbing is released, unlike the webbing with limited withdrawal. A method of preventing safety accidents by moving the anchor or buckle to make the webbing more closely attached to the occupant is also used while improving the fixing force.

Specifically, according to the prior art, a method of limiting rotation of the spool by generating a fluid through an ignition action according to the impact of a vehicle to limit the withdrawal of the webbing is applied to the buckle and anchor, and the pressure of the fluid is applied to the anchor or buckle webbing. It uses a method of moving in the opposite direction from the position.

However, this method may be effective in preventing secondary accidents, but in the exhaust process of the fluid generated through ignition, the fluid with a high temperature is exhausted in the direction where the occupant is located or diffused in all directions. There was a problem that another safety accident problem, such as burns of an occupant exposed to the heat, could occur.

Accordingly, a method for moving the anchor or buckle to ensure the safety of the occupant according to the impact of the vehicle, and for exhausting the fluid exhausted through the ignition action so as not to cause another safety accident to the occupant is being actively devised. , a means is needed for this.

The present invention has been made to solve the above-mentioned problems of the prior art, and the anchor or buckle is moved according to the impact applied to the vehicle to bring the webbing into close contact with the occupant, while the fluid exhausted through the ignition action is moved to the occupant's position and The task is to prevent burns and safety accidents caused by fluid by exhausting in different directions.

The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art from the following description.

The wrap pretensioner of the present invention for achieving the above object is a wrap pretensioner that is operated by an impact applied to a vehicle to move an anchor or buckle of a vehicle, and a connection unit coupled to the buckle or the anchor has a space inside A pressure unit that is formed and a part of the connection unit is inserted, is operated by an impact applied to the vehicle, injects fluid toward the inner space, and moves the connection unit toward the inner space according to the pressure of the fluid accommodated therein and an exhaust unit for exhausting the fluid contained in the pressure unit toward a direction opposite to the position of the occupant of the vehicle.

Here, the pressure unit is characterized in that one end of the connection unit is inserted into the inside and coupled to the one end to pull the buckle or the anchor by moving one end of the connection unit according to the pressure of the fluid accommodated in the inner space. to be

In addition, the pressure unit has a case portion in which a space is formed therein so that one end of the connection unit is inserted and an inner space is formed long so that one end of the connection unit is moved, and one end of the connection unit is formed inside the case portion. A moving part that is coupled to and moved toward one end of the case part by pressure and an operating part that communicates with the inner space of the case part and is operated according to the impact applied to the vehicle to inject fluid toward the inner space of the case part. It is characterized by doing.

At this time, the moving unit is disposed to divide a first space coupled with the connection unit of the case part and a second space in which the connection unit is moved, and the pressure of the fluid accommodated in the first space causes the second space to be moved. It is moved to space and characterized in that one end of the connection unit is moved.

On the other hand, the operating unit is characterized in that located on the first space to increase the pressure of the first space.

In addition, the operating unit is characterized in that the fluid is injected in a direction perpendicular to the longitudinal direction of the case portion in order to prevent the movement of the connection unit from being restricted.

On the other hand, the connection unit is bent so that the buckle or the anchor is coupled to the other end, and the direction in which one end is moved by the moving unit and the direction in which the buckle or the anchor is moved by the movement of the one end are different from each other. characterized by being

In addition, the exhaust unit is provided at the other end of the case unit, and is characterized in that it exhausts the fluid injected toward the inner space of the case unit in a direction perpendicular to the longitudinal direction of the case unit.

Here, the exhaust unit is characterized in that at least one hole is formed that opens in a direction perpendicular to the longitudinal direction of the case portion.

At this time, the hole is characterized in that the fluid is injected toward the bottom of the vehicle or the side direction perpendicular to the case portion to prevent the fluid from being directly injected to the occupant located in the rear seat of the vehicle.

The lap pretensioner of the present invention for solving the above problems moves the anchor or buckle according to the impact applied to the vehicle to bring the webbing into close contact with the occupant, while exhausting the fluid exhausted through ignition in a direction different from the occupant's position It has the effect of preventing burns and safety accidents caused by fluid.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

The above summary, as well as the detailed description of the preferred embodiments of the present application set forth below, will be better understood when read in conjunction with the accompanying drawings. Preferred embodiments are shown in the drawings for the purpose of illustrating the present invention. However, it should be understood that this application is not limited to the precise arrangements and instrumentalities shown.
1 is a view showing the overall appearance of a wrap pretensioner according to an embodiment of the present invention;
2 is a view for explaining the appearance of a wrap pretensioner according to an embodiment of the present invention;
3 is a view for explaining the internal structure of a wrap pretensioner according to an embodiment of the present invention;
4 is a view for explaining a pressure unit of a wrap pretensioner according to an embodiment of the present invention;
5 is a view for explaining a moving part of a wrap pretensioner according to an embodiment of the present invention;
6 is a view for explaining an exhaust unit of a wrap pretensioner according to an embodiment of the present invention;
7 is a view for explaining an operating situation of a wrap pretensioner according to an embodiment of the present invention; and
8 is a view for explaining a groove of a wrap pretensioner according to a modified example of the present invention.

Hereinafter, a preferred embodiment of the present invention in which the object of the present invention can be realized in detail will be described with reference to the accompanying drawings.

In describing the present embodiment, the same name and the same reference numeral are used for the same configuration, and additional description thereof will be omitted.

First, the overall configuration of the wrap pretensioner according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6 .

Specifically, FIG. 1 is a view showing the overall appearance of a wrap pretensioner according to an embodiment of the present invention, FIG. 2 is a view showing the appearance of the wrap pretensioner according to an embodiment of the present invention, and FIG. Figure 4 is a view to explain the internal structure of the wrap pretensioner according to an embodiment of the present invention, Figure 4 is a view to explain the pressure unit of the wrap pretensioner according to an embodiment of the present invention, Figure 5 is the present invention Figure 6 is a view for explaining the moving part of the wrap pretensioner according to an embodiment of the present invention, and FIG. 6 is a view for explaining the exhaust unit of the wrap pretensioner according to an embodiment of the present invention.

First, as shown in FIG. 1 , the wrap pretensioner according to an embodiment of the present invention may be provided on the side of the seat S on which the occupant is seated.

In addition, the anchor (A) may be arranged to protrude toward the front direction of the seat (S) so as to be combined with the webbing provided in the seat (S), the webbing is located in the lower abdomen through the clavicle of the occupant It may be arranged to form an incline with the back of the seat (S) so that it can be coupled in the state.

At this time, the anchor (A) has been mainly described to help a clear explanation of the present invention, but the buckle is also used in the same way so that the webbing adheres to the occupant and the occupant is effectively prevented from being separated from the seat (S). It can be prevented, and may not be limited to the anchor (A).

Here, the wrap pretensioner is connected to the anchor (A) or the buckle, a space is formed inside the connection unit 100, a part of the connection unit 100 is inserted, and it is operated by an impact applied to the vehicle to A pressure unit 200 that injects fluid toward the space and moves the connection unit 100 toward the inner space according to the pressure of the fluid accommodated therein, and the fluid accommodated inside the pressure unit 200 is transferred to the vehicle. It may be composed of an exhaust unit 300 that exhausts in the direction opposite to the position of the occupant.

As shown in FIG. 2 , in the connection unit 100 , a part of one end may be inserted into the pressure unit 200 and the anchor A may be connected to the other end.

In addition, the connection unit 100 may be bent so that the anchor A and the pressure unit 200 are inclined at an angle, and the pressure unit 200 moves to the inner space of the pressure unit 200. While being moved, the anchor (A) can be moved toward the pressure unit (200).

On the other hand, in the pressure unit 200, one end of the connection unit 100 is inserted into the inside, and one end of the connection unit 100 is inserted into the inner space according to the pressure of the fluid accommodated in the inner space by being coupled with the one end. can be moved towards

In addition, a case part 220 in which a space is formed therein so that one end of the connection unit 100 is inserted and an inner space is formed long so that one end of the connection unit 100 is moved, and the inside of the case part 220 is coupled to one end of the connection unit 100 and communicates with the moving part 240 moving toward one end of the case part 220 by pressure and the inner space of the case part 220, It may include an operating unit 260 that is operated according to an applied impact and sprays fluid toward an inner space of the case unit 220 .

Here, the case part 220 is moved inward in a state in which a part of the connection unit 100 is inserted, and may be formed long in one direction so as to move the anchor A, and the internal space is They may be separated by the moving unit 240.

More specifically, as shown in FIG. 4, the first space 222 that does not pass the moving part 240 and the moving part 240 move in one direction in a state in which one end of the connection unit 100 is inserted. As it is, one end of the connection unit 100 may be divided into a second space 224 to be moved.

In addition, the case part 220 may be inserted into the connection unit 100 from one side, and the other side may be open so that the movement of the moving part 240 is not restricted due to internal air pressure.

On the other hand, the moving part 240 is coupled to one end of the connection unit 100, and when the fluid is injected into the inner space by the operating part 260, the pressure depends on the amount of fluid accommodated in the inner space. One end of the connection unit 100 may be moved while moving toward the other side of the case part 220 along the second space 224.

Accordingly, by moving one end of the connection unit 100, the anchor A coupled to the other end of the connection unit 100 can be moved inward of the case part 220, and thus the webbing It is possible to prevent safety accidents that may additionally occur by effectively adhering to the occupant.

Here, as shown in FIG. 5, the moving unit 240 includes an insertion member 242 having a space formed therein so that one end of the connection unit 100 is inserted into the first space 222, the first space The movement of the fluid injected into the 222 into the second space 224 is restricted to increase the internal pressure of the first space 222, and the pressure of the first space 222 increases the pressure of the second space. A sealing member 244 separating the first space 222 and the second space 224 so that the insertion member 242 is moved toward the other side of the case part 220 along 224, and the insertion It is provided between the member 242 and the sealing member 244 to reduce friction with the inside of the case portion 220 generated while the sealing member 244 is moved, thereby smoothing the movement of the sealing member 244. It may be composed of a bearing member 246 to.

Here, as shown in FIG. 3, the insertion member 242 may have an internal space formed so that one end of the connection member 100 is inserted, and has a width corresponding to one end of the connection unit 100. flow of the fluid in the first space 220 into the second space 224 in a state where the connection unit 100 is inserted.

That is, in a state in which the connection unit 100 is inserted into the insertion member 242, the first space 222 and the second space 224 may be isolated by the sealing member 244. .

In addition, the sealing member 244 divides the first space 222 and the second space 224, and at the same time, according to the capacity of the fluid injected by the operation unit 260, the pressure of the fluid It may be moved toward the other side of the case part 220 along the second space 224 .

Meanwhile, the operating unit 260 may be operated according to an impact applied to the vehicle to inject fluid toward the first space 222 .

More specifically, the operating unit 260 is disposed adjacent to the case unit 220 so as to communicate with the first space 222, and is ignited according to an impact applied to the vehicle to supply the fluid to the first space ( 222) can be sprayed.

At this time, the operating unit 260 may be largely disposed between the other end of the connection unit 100 and the moving unit 240, and more specifically, the exhaust unit on the first space 222 ( 300) and the sealing unit 244 can be disposed between.

This is so that the operation unit 260 is operated according to the impact applied to the vehicle to inject fluid, and the injected fluid can move toward the outside of the pressure unit 200 through the exhaust unit 300. It can be disposed between the exhaust unit 300 and the sealing member 244.

In addition, when fluid is continuously injected into the first space 222 and the internal pressure becomes excessively high, the case portion 220 is overheated by the fluid injected at a high temperature, and the body of the occupant in contact therewith is overheated. Burns may occur, the case portion 220 may be damaged due to an inability to withstand the increasing internal pressure, or the anchor A may move excessively, causing the webbing to adhere excessively to the occupant. ), while being disposed adjacent to the exhaust unit 300.

Meanwhile, the exhaust unit 300 is disposed at one end of the case part 220 and exhausts the fluid injected into the first space 222 in a direction perpendicular to the longitudinal direction of the case part 220. A groove 320 may be formed to do so.

Here, the exhaust unit 300 may communicate with the first space 222 so that the fluid injected into the first space 222 can be exhausted through the groove 320, and the first space ( 222) may be in communication with the first space 222 through a slight gap so that the moving part 240 can be moved by the pressure of the fluid injected.

More specifically, as shown in FIG. 3 , if the exhaust unit 300 is in communication so that the fluid injected from the operation unit 260 can be directly exhausted, the moving unit 240 is driven by internal pressure. Since it is difficult to receive power capable of moving toward the other end of the case part 220, the exhaust unit 300 is configured to generate a pressure rise according to the capacity of the fluid in the first space 222. 1 communicates with the space 222 through a gap to cause a restriction in the movement of the fluid, and accordingly, the moving unit 240 can be moved through the effect of increasing the internal pressure.

In addition, in a situation where the movement of the moving unit 240 is restricted, the fluid accommodated in the first space 222 can be moved toward the exhaust unit 300 through the gap communicating with the exhaust unit 300, and accordingly The high-temperature fluid can be exhausted to the outside of the case part 220 while preventing the pressure in the first space 222 from continuously increasing.

At this time, the groove 320 may be opened toward the lower part of the vehicle so that the exhaust unit 300 exhausts the fluid in a direction perpendicular to the longitudinal direction of the case part 220 .

Unlike the wrap pretensioner manufactured according to the prior art, which exhausts the internal fluid in the longitudinal direction of the case part 220, the fluid is exhausted even if the occupant is sitting in the front or rear seat of the vehicle. Since the occupant is not located in the direction, there may be an effect of preventing burns due to high heat of the fluid in advance.

Reference may be made to FIGS. 7 and 8 to describe the operating conditions of the wrap pretensioner according to an embodiment of the present invention in more detail based on the above-described configuration.

Specifically, FIG. 7 is a view to explain the operation of the wrap pretensioner according to an embodiment of the present invention, and FIG. 8 is a view to explain the groove of the wrap pretensioner according to a modified example of the present invention.

As shown in FIG. 7, when the operation unit 260 is operated according to the impact applied to the vehicle, the fluid is injected toward the first space 222 due to the generation of fluid according to ignition, and the first space ( The sealing member 244 may be moved toward the other side of the case part 220 while the internal pressure increases according to the amount of fluid accommodated in the 222 .

Accordingly, the insertion member 242 moves one end of the connection unit 100 toward the other side of the case part 220, and the anchor A is moved to bring the webbing into close contact with the occupant. .

At this time, when the sealing member 244 is moved to the other side of the case part 220 and the movement is restricted by the case part 220, the internal pressure of the first space 222 rises, and thus Accordingly, the fluid may be moved toward the exhaust unit 300 through the gap, and the fluid may be exhausted to the outside of the case part 220 through the groove 320 formed in the exhaust unit 300 .

As described above, the groove 320 is opened in a direction perpendicular to the longitudinal direction of the case part 220, so that the fluid can be discharged in a direction opposite to the direction in which the occupant is located.

As shown in FIG. 6 , the groove 320 exhausts the fluid toward the lower portion of the vehicle to prevent the fluid from being sprayed toward the occupants located in the front and rear seats.

In this way, when the groove 320 exhausts the fluid toward the lower part of the vehicle, it is possible to prevent the fluid from being directly injected toward the occupant's position regardless of the position of the seat S located inside the vehicle. It works.

Meanwhile, as shown in FIG. 8 , the groove 320 may exhaust fluid toward the lower portion of the vehicle, but may also exhaust fluid toward the side direction opposite to the occupant.

Specifically, the groove 320 may be in a direction toward the occupant seated in a direction opposite to the seat S to which the wrap pretensioner is attached, but the occupant may not be directly exhausted from the seat S ) may be open to have a slight slope toward the lower part of the

Accordingly, even if the groove 320 is open downward or open in the lateral direction toward the lower part of the seat S adjacent to the seat S where the occupant is located, the fluid is discharged directly to the occupant. Failure to do so can prevent accidents.

In addition, as described above, in addition to bringing the webbing into close contact with the occupant by moving the anchor (A), the webbing may be brought into close contact with the occupant by moving the buckle, or the anchor (A) and the buckle It may be obvious that the webbing can be used in various ways, such as by moving the webbing to closely contact the occupant.

As described above, the preferred embodiments according to the present invention have been reviewed, and the fact that the present invention can be embodied in other specific forms without departing from the spirit or scope in addition to the above-described embodiments is a matter of ordinary knowledge in the art. It is self-evident to them.

Therefore, the embodiments described above are to be regarded as illustrative rather than restrictive, and thus the present invention is not limited to the above description, but may vary within the scope of the appended claims and their equivalents.

A: Anchor
S: sheet
100: connection unit
200: pressure unit
220: case part
222 First space
224: second space
240: moving unit
242: insertion member
244: sealing member
246: bearing member
260: operation unit
300: exhaust unit
320: home

Claims (10)

A wrap pretensioner that is operated by an impact applied to a vehicle to move an anchor or buckle of the vehicle,
a connection unit coupled to the anchor or the buckle;
A space is formed inside, a part of the connection unit is inserted, it is operated by an impact applied to the vehicle, and fluid is sprayed toward the inner space, and one end of the connection unit is moved according to the pressure of the fluid accommodated therein a pressure unit pulling the anchor or the buckle; and
And an exhaust unit for exhausting the fluid accommodated in the pressure unit in a direction opposite to the position of the occupant in the vehicle,
The pressure unit,
A case portion in which a space is formed inside so that one end of the connection unit is inserted and an inner space is formed so that one end of the connection unit is long to be moved. A moving part that moves toward one end of the case part and an operating part that communicates with the inner space of the case part and is operated according to an impact applied to the vehicle to inject fluid toward the inner space of the case part,
The moving part,
The case part is disposed to divide a first space coupled with the connection unit and a second space in which the connection unit is moved, and is moved to the second space by the pressure of the fluid accommodated in the first space, and the connection unit A sealing member is provided to move one end of and to divide the first space and the second space,
The operating part,
Characterized in that it is provided between the exhaust unit and the sealing member to prevent the exhausted fluid from being directly injected toward the exhaust unit.
Wrap Pretensioner.
delete delete delete According to claim 1,
The operating part,
Characterized in that it is located on the first space to increase the pressure of the first space,
Wrap Pretensioner.
According to claim 1,
The operating part,
Characterized in that the fluid is injected in a direction perpendicular to the longitudinal direction of the case portion to prevent the movement of the connection unit from being restricted.
Wrap Pretensioner.
According to claim 1,
The connection unit is
Characterized in that the anchor or the buckle is coupled to the other end, and the one end is bent so that the direction in which the moving part moves and the direction in which the anchor or the buckle moves by the movement of the one end are different from each other,
Wrap Pretensioner.
According to claim 1,
The exhaust unit is
Characterized in that the fluid provided at the other end of the case part and ejected toward the inner space of the case part is exhausted in a direction perpendicular to the longitudinal direction of the case part.
Wrap Pretensioner.
According to claim 8,
The exhaust unit is
Characterized in that at least one hole is formed that opens in a direction perpendicular to the longitudinal direction of the case portion.
Wrap Pretensioner.
According to claim 9,
the hall,
Characterized in that the fluid is injected toward the lower part of the vehicle or in a lateral direction perpendicular to the case portion to prevent the fluid from being directly injected to the occupant located in the rear seat of the vehicle.
Wrap Pretensioner.

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