KR101564212B1 - Buckle shifting device of safety belt - Google Patents

Abstract

A buckle moving device for a seat belt is disclosed. The buckle moving device of the seat belt of the present invention comprises: a bracket; A drive motor fixed to the bracket; A bearing spaced apart from the drive motor and rotatably coupled to the bracket; A buckle to which the tongue of the seat belt is fastened; A cable coupled to the buckle and having one side in close contact with the bearing in a direction to wind the bearing; A feed screw coupled to an end of the cable on the opposite side of the buckle; And a gear assembly that transmits a drive motor and a feed screw, wherein when the drive motor is operated, the bearing rotates with movement of the cable. According to the present invention, since the direction of the cable is changed in a state in which the switching portion of the cable is in close contact with the rotating bearing, smooth movement of the cable is achieved while preventing movement of the cable in an undesired direction at the point where the cable is bent when the buckle is moved, It is possible to provide a buckle moving device for a seat belt in which friction is generated in a cable or a load is not excessively applied to a motor.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a buckle-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a buckle moving device for a seatbelt, and more particularly, to a buckle moving device for a seatbelt, in which a buckle and a tongue are more easily engaged when a seatbelt is worn and a restraining force of a seatbelt To a buckle moving device.

A seat belt is a belt attached to a seat of a transportation vehicle running at high speed such as an automobile or an aircraft. The seat belt or the passenger may bounce off the seat when there is a collision, a sudden braking, a vibration or an agitation, It is a device that prevents or minimizes the damage.

Generally, the seat belt for automobiles is made of cloth. It has a buckle that can be easily put on and off. In the simplest two-point type, both ends of the belt are fixed at two places in the body. The 3-point system is designed to go through the driver's waist and shoulder, and the end of the belt is fixed at three places on the body. There is a four-point race car, which is also called a full harness type.

The average adult man is able to withstand two to three times the weight of his body, and when the car runs at 40 km per hour, it strikes 16 times the weight of any obstacle it encounters. Therefore, the seatbelt is required not only for high-speed operation but also for low-speed operation, and is designed to withstand a force which is about 30 times that of an adult male.

As described above, the seatbelt is designed to minimize injuries to drivers and passengers in the event of a sudden stop of the vehicle or an accident such as an automobile, and is installed in the seat. However, the seatbelt is designed to be convenient for the occupant The aspect for improving the performance is considered at the same time.

Korean Patent Registration No. 10-1090826 discloses a seat belt buckle for a vehicle. Korean Patent Registration No. 10-1090826 discloses a seat belt buckle for a vehicle, which comprises a screw, a motor for rotating the screw, A buckle moving device including a sliding plate that moves in the forward and backward directions of the seat in accordance with forward and backward rotation of the buckle moving device, a connecting plate having one side rotatably mounted on the sliding plate of the buckle moving device, And a buckle head which is rotatably installed.

Korean Patent Registration No. 10-1090826 discloses a buckle of a seat belt which is provided so that both the buckle head and the connecting plate can be rotated so that free rotation is limited so that the belt tongue and the buckle head can be conveniently combined, There is an advantage that the interference between the seat back and the buckle head can be avoided during the forward movement, and the belt tongue can be easily disengaged from the buckle head.

However, in Korean Patent Registration No. 10-1090826, although the seat back is prevented from interfering with the buckle head even if the seat back is moved, since the buckle is located in the cut portion of the seat, a child seat is provided on the seat, There is a problem that the process of coupling the tongue to the buckle can not be performed smoothly.

In order to solve such a problem, an apparatus 1000 in which a buckle is moved is being developed. 9, a conventional buckle moving apparatus 1000 includes a frame 1001, a motor 1002 coupled to one end of the frame 1001, a rotating screw (not shown) connected in series with the motor 1002, And a buckle 1005 coupled to the other end of the wire 1004. The conventional buckle moving apparatus 1000 includes a buckle 1004 and a wire 1004. The buckle 1005 includes a wire 1004 having one end coupled to the rotating screw 1003, The wire 1004 connected to the rotating screw 1003 moves back and forth in accordance with the rotation of the motor 1002 and the buckle 1005 coupled with the wire 1004 protrudes upward or seats to the seat side.

However, in the conventional buckle moving apparatus 1000, a curved bent tube 1006 is formed at a portion where the direction of the wire 1004 changes, so that the wire 1004 passes through the inside of the tube 1006, There is a problem that the wire 1004 is frictioned with the inside of the tube 1006 and the motor 1002 is continuously overloaded in the process of moving the wire 1004 back and forth.

In addition, since the motor 1002 is arranged in series with the rotating screw 1003, the volume occupied by the entire apparatus 1000 becomes large, which makes it difficult to install the motor 1002 in the lower space of the seat with limited space.

In addition, when the moving speed of the buckle 1005 is to be adjusted, it is difficult to adjust the speed of the buckle 1005 because the motor 1002 connected in series with the rotating screw 1003 needs to be replaced. There is a problem in that the coupling portions of the frame 1001 and the motor 1002 must be replaced in order to couple the motor 1002 formed with different sizes according to specifications.

In order to repair or replace the power transmission device 1007 in which the rotation force of the wire 1004 or the rotating screw 1003 or the motor 1002 is transmitted to the rotating screw 1003, 1004, the rotating screw 1003, and the power transmission apparatus 1007, it takes more time than necessary.

(0001) Korean Patent Publication No. 10-1090826 (Registered on December 1, 2011)

It is an object of the present invention to provide a buckle which is capable of easily adjusting the moving speed of the buckle without causing friction in the cable connected to the buckle when the buckle is moved or overloading the motor more than necessary, So that the installation area of the entire apparatus can be reduced.

The object is achieved according to the invention by a bracket, A driving motor fixed to the bracket; A bearing spaced apart from the drive motor and rotatably coupled to the bracket; A buckle to which the tongue of the seat belt is fastened; A cable coupled to the buckle and having one side in close contact with the bearing in a direction to wind the bearing; A feed screw coupled to an end of the cable at an opposite side of the buckle; And a gear assembly that transmits the drive motor and the feed screw, wherein when the drive motor is operated, the bearing rotates with movement of the cable. do.

The outer circumferential surface of the bearing may be concave so that the contact area of the bearing and the cable is increased.

The cable includes: an upper portion coupled to the buckle; A switching portion extending from the upper portion and brought into close contact with the bearing; And a lower portion extending from the switching portion and coupled with the feed screw, wherein the upper portion and the lower portion can form an angle of 0 to 180 degrees.

The present invention further includes a roller rotatably coupled to the bracket, and the roller may be made to be in close contact with the lower side of the upper side on the opposite side of the bearing.

The gear assembly includes: a driving gear fixedly coupled to a rotating shaft of the driving motor; A driven gear rotating in association with the feed screw; And a housing accommodating the driving gear and the driven gear and opening toward the opposite direction of the feed screw.

Wherein the driven gear comprises: a nut portion threadably engaged with the feed screw; And a gear portion coupled to the nut portion and gear-engaged with the driving gear.

The nut portion may be insert injection molded with a gear portion.

The gear assembly may further include a cover covering the drive gear and the driven gear and coupled with the housing.

The surface of at least one of the cable and the bearing may be formed with irregularities so that slippage does not occur between the cable and the bearing when the drive motor is operated.

The bracket may include a first sensor unit, and the feed screw may include a second sensor unit for sensing a position of the first sensor unit.

The drive motor and the feed screw are axially different and arranged in parallel, and the gear assembly can be coupled to the drive motor and the feed screw on the opposite side of the cable.

According to the present invention, since the direction of the cable is changed in a state in which the switching portion of the cable is in close contact with the rotating bearing, smooth movement of the cable is achieved while preventing movement of the cable in an undesired direction at the point where the cable is bent when the buckle is moved, It is possible to provide a buckle moving device for a seat belt in which friction is generated in a cable or a load is not excessively applied to a motor.

In addition, since the drive motor and the feed screw are axially different and arranged in parallel, and the gear assembly is coupled to the drive motor and the feed screw on the opposite side of the cable, the moving speed of the buckle can be easily adjusted, It is possible to provide a buckle moving device for a seat belt that can be easily replaced and can reduce the installation area of the entire device.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall perspective view showing a state of engagement of a buckle moving device of a seat belt according to an embodiment of the present invention; FIG.
2 is an exploded perspective view showing the entire configuration of the buckle moving device of the seat belt of Fig. 1;
3 is a sectional view of the buckle moving device of the seat belt of Fig. 1;
4 is a partial cross-sectional view showing a first state of the first sensor portion and the second sensor portion of the buckle moving device of the seat belt of Fig. 1;
Fig. 5 is a schematic view showing a buckle moving device and a control part of the seat belt of Fig. 1; Fig.
6 is a plan view showing a bearing of a buckle moving device of a seat belt according to another embodiment of the present invention.
Fig. 7 is a partial cross-sectional view showing the engaged state of the feed screw and the driven gear of the buckle moving device of the seat belt of Fig. 1; Fig.
Fig. 8A is a perspective view showing a first state of the buckle moving device of the seat belt of Fig. 1; Fig.
Fig. 8B is a perspective view showing a second state of the buckle moving device of the seat belt of Fig. 1; Fig.
Fig. 8C is a perspective view showing a third state of the buckle moving device of the seat belt of Fig. 1; Fig.
9 is a view showing a conventional buckle moving device.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the well-known functions or constructions are not described in order to simplify the gist of the present invention.

The buckle moving device of the seat belt of the present invention can easily adjust the moving speed of the buckle without causing friction to the cable connected to the buckle when the buckle is moved or overloading the motor more than necessary, So that the installation area of the entire apparatus can be reduced.

1 is an exploded perspective view showing the entire configuration of a buckle moving device of the seat belt of Fig. 1, Fig. 3 is an exploded perspective view of the buckle moving device of Fig. 1, Fig. 4 is a partial cross-sectional view showing a first state of the first sensor part and the second sensor part of the buckle moving device of the seat belt of Fig. 1, Fig. 5 is a partial cross- Fig. 6 is a plan view showing a bearing of the buckle moving device of the seat belt according to another embodiment of the present invention, Fig. 7 is a plan view showing the bearing device of the buckle moving device of the seat belt, FIG. 8A is a perspective view showing a first state of the buckle moving device of the seatbelt in FIG. 1, FIG. 8B is a perspective view showing a second state of the buckle moving device of the seatbelt in FIG. 1 A perspective view showing a third state of the buckle moving apparatus of the safety belt.

1 and 2, the buckle moving device 1 of the seat belt according to an embodiment of the present invention is configured such that when the seat belt is worn, the buckle 40 and the tongue are easily engaged with each other, The driving motor 20, the bearing 30, the buckle 40, the cable 50, the feed screw 60, the gear assembly 70, and the like. And a roller (80).

2 and 3, the bracket 10 is coupled to the vehicle body frame of the seat 2 or the vicinity thereof and includes a driving motor 20, a bearing 30, a cable 50, A motor mounting portion 12, a bearing mounting portion 13, an upper cover 14, and an upper cover 14 are provided as a frame in which a screw 60, a gear assembly 70 and a roller 80 are installed on the inside and the outside thereof. And a finishing cover (15).

The front end and the rear end of the body (11) are formed in the shape of a rectangular frame which is long in the lateral direction and open at the upper side so that the cable (50) and the feed screw (60) do. The front side is a direction in which the cable 50 connected to the buckle 40 protrudes so that the ordinary skilled artisan can understand the present invention more easily and the rear side indicates the direction in which the buckle 40 is retracted, ) In the direction of movement.

The slide hole 11a is formed in the lower end surface of the body 11 so that the bush B can move back and forth along the longitudinal direction of the body 11 in a state where the screw pin P1 coupled to the bush B protrudes to the lower end, .

The motor mounting portion 12 is provided on the upper side of the rear end of the body 11 by forming a frame in which the driving motor 20 is seated. The motor mounting portion 12 has a shape corresponding to the periphery of the driving motor 20 so that the driving motor 20 to be installed can form a wide contact surface and can be engaged.

The bearing mounting portion 13 is formed at the front end portion of the body 11 where the cable 50 is projected so that the bearing 30 and the roller 80 for supporting the cable 50 are rotatably mounted. The bearing mounting portion 13 is formed with a coupling hole into which the bearing shaft 31 and the roller pin P3 are inserted. The description of the upper cover 14 and the finishing cover 15 will be given later with a description of the bush B and the gear assembly 70. [

1 to 3, the driving motor 20 is coupled to the motor mounting portion 12 of the bracket 10 in a state of being arranged in parallel with the feed screw 60 in different axes, do. The rotational force of the drive motor 20 is converted into a rectilinear motion by the gear assembly 70 and the feed screw 60 so that the buckle 40 is projected or retracted by the signal of the seat belt control device 100 Direction.

When the drive motor 20 is provided on the upper side of the bracket 10 in parallel with the feed screw 60 as compared with the case where the drive motor 20 is connected in series with the feed screw 60, 1) is reduced.

Referring to FIGS. 2 and 3, the feed screw 60 is elongated and has threads on its outer circumferential surface. The feed screw 60 is threadedly engaged with the driven gear 72 of the gear assembly 70 to convert the rotary motion of the driven gear 72 into linear motion.

At the front end of the feed screw 60, a coupling portion 60a having no threads is formed. The rear end of the cable 50 and the bush B are coupled to the engaging portion 60a.

The rear end of the cable 50 is press-fitted while being inserted into the front end of the engaging portion 60a. Although not shown, an insertion hole into which the rear end of the cable 50 is inserted is formed at the front end of the coupling portion 60a.

The bush B is formed in a substantially rectangular parallelepiped shape spaced apart from the inner circumferential surface of the body 11 such that the bush B slides forward and backward in the body 11 in a state of being coupled to the feed screw 60. The feed screw 60 is prevented from rotating due to the shape of the bush B.

As shown in Figs. 3 and 4, the bush B is fixed to the engaging portion 60a by the screw pin P1. A through hole through which the screw pin P1 is inserted is formed inside the bush B and a coupling hole through which the screw pin P1 is coupled is formed in the coupling part 60a.

The upper cover 14 is engaged with the body 11 on the upper side of the bush B. The upper cover 14 forms an upper boundary at which the bush B slides. The rear end of the upper cover 14 is fixed to the body 11 by the cover pin P2 in a state where the front end is inserted into the groove portion of the bearing mounting portion 13. [

3 and 4, the upper cover 14 is provided with a first sensor unit S1 and the feed screw 60 is provided with a second sensor unit S1 for sensing the position of the first sensor unit S1. (S2). The first sensor unit S1 and the second sensor unit S2 can be applied with various known technologies for detecting relative positions.

In an embodiment of the present invention, the first sensor unit S1 is formed of a magnet and the second sensor unit S2 is formed of a Hall IC for sensing the magnetic force of the magnet.

The Hall IC (Hall IC) is an integrated circuit used for detecting contactless displacement. The Hall IC (Hall IC) integrates a Hall element or an amplifier in a silicon chip. The Hall IC is integrated with the magnet. And transmits the signal to the seat belt control apparatus 100. [

5, the seatbelt control device 100 is connected to the airbag control device 200, the engine control device 300, the cluster control device 400, and the cruise control device 500 of the vehicle, And controls the operation of the buckle moving device 1 so that the buckle 40 protrudes or retracts depending on the signal of the device.

That is, the seat belt control apparatus 100 detects the signal of the second sensor unit S2, and projects or buckles the buckle 40 by signals of the respective control apparatuses generated in accordance with the operation state at each time point And controls the driving direction of the drive motor 20 in the normal and reverse directions.

As shown in FIGS. 4 and 8, the Hall IC and the magnet are each provided as a pair, and the three contact signals are transmitted to the seat belt control device 100. That is, the first state (C1) in which the pair of Hall ICs and the magnet face each other, the second state (C2) in which the front end magnet and the rear end Hall IC face each other, and the rear end magnet So that the contact signal of the third state (C3) is transmitted.

The first state C1 means the state of the buckle 40 before the passenger boarding the vehicle or after the passenger wears the seatbelt. The second state C2 means that the passenger can open the door of the vehicle, The third state C3 indicates a state in which the buckle 40 is rapidly lowered and a passenger is restrained when a dangerous element occurs during traveling of the vehicle it means.

The first state (C1) to the third state (C3) are performed in accordance with the movement of the feed screw (60) in the forward and backward directions by driving the drive motor (20). A detailed description of the first to third states (C3) will be given later with a description of the operating state.

2 and 3, the cable 50 is engaged with the buckle 40 at the upper end thereof and the lower end thereof is press-fitted to the engaging portion 60a so that the buckle 40 Is projected upward or retracts back to the seat 2 side.

The cable 50 includes an upper portion 51 coupled to the buckle 40, a lower portion 53 coupled with the feed screw 60, and a switching portion 52 in which the moving direction of the cable 50 is changed. do.

Since the buckle 40 is installed at an oblique angle from the rear to the upper side of the left or right side of the seat 2 so as to easily engage the tongue of the driver, the buckle 40 is provided at the buckle moving device 1 The upper portion 51 and the lower portion 53 of the cable 50 form an angle of 0 to 180 degrees with respect to each other and the switching portion 52 in which the direction of the cable 50 is turned in a curved shape is connected to the cable 50 The bearing 30 is provided so as to facilitate turning and moving.

2 and 3, the bearing 30 is rotatably coupled to the bearing mounting portion 13 provided at the distal end portion of the bracket 10. The bearing 30 is brought into close contact with the cable 50 at a side where the direction of the cable 50 is changed when the cable 50 is moved so that the direction of the cable 50 can be easily changed. The bearing 30 is coupled to the bracket 10 together with the bearing shaft 31a.

That is, as the direction of the cable 50 is changed in a state in which the switching unit is in close contact with the bearing 30, the cable 50 is moved in the forward and backward directions of the cable 50 Can be used to push or pull the buckle (40).

As a result, most of the rotational force of the driving motor 20 is transmitted to the buckle 40 so that the buckle 40 can quickly protrude or retract, which improves the retraction speed of the buckle 40, So that the safety belt installed for the safety of the occupant can be significantly improved.

Also, since the surface of the cable 50 is not damaged or easily aged by the bearing 30, the tension to push or pull the buckle 40 can be maintained for a long time.

As shown in FIG. 6, a recess 30a may be formed on the outer circumferential surface of the bearing 30. If the outer circumferential surface of the bearing 30 which is in contact with the switching portion of the cable 50 is concave, the contact area with the cable 50 is increased to prevent slippage on the contact surface which may be caused by deterioration of the component during long- .

Referring to FIG. 3, the surface of at least one of the cable 50 and the bearing 30 may be provided with projections and depressions C. FIG. When the unevenness C is formed on at least one of the surface of the cable 50 and the bearing 30, the friction between the surface of the cable 50 and the bearing 30 is increased, so that sliding between the cable 50 and the bearing 30 is prevented.

A roller (80) is further coupled to the bearing mounting portion (13). The roller 80 is brought into close contact with the lower portion of the switching portion 52 on the opposite side of the bearing 30 to form a direction in which the cable 50 is bent at an acute angle and the cable 50 is rotated, As shown in Fig. The roller 80 is rotatably coupled to the bearing mounting portion 13 by a roller pin P3.

1 to 3, the gear assembly 70 mediates the drive motor 20 and the feed screw 60 such that the rotational force of the drive motor 20 is converted into a linear motion of the feed screw 60 .

The gear assembly 70 includes a drive gear 71 fixed to the rotary shaft of the drive motor 20, a driven gear 72 rotated in conjunction with the feed screw 60, And a cover 74 which covers the drive gear 71 and the driven gear 72 and is engaged with the housing 73. The housing 73 is provided with a housing 73, .

The gear assembly 70 is connected to the drive motor 20 and the feed screw 60 on the opposite side of the cable 50. At this time, the housing 73 of the gear assembly 70 is bolted to the finish cover 15. The finishing cover 15 is coupled to the body 11 before the housing 73 is assembled to form a mounting surface on which the housing 73 is firmly coupled.

As described above, the drive motor 20 is rotated in the direction of the rotation of the gear assembly 70 and the feed screw 60 as the axis of rotation of the drive motor 20 is different from that of the feed screw 60 and parallel to the rear end of the bracket 10 The inspection and replacement process is simplified.

The buckle moving device 1 determines the force and the moving speed of the buckle 40 protruding or retreating according to the gear ratio of the gear assembly 70, that is, the gear ratio of the driving gear 71 and the driven gear 72, The force of the protruding or retracting portion 40 and the moving speed thereof should be adjusted in accordance with the type of vehicle or the tendency of the customer.

The buckle moving device 1 of the seat belt according to the embodiment of the present invention is configured such that the gear assembly 70 is engaged with the buckle moving device 1 , The gear assembly 70 is assembled at the end of the assembling process at the time of production or maintenance with various gear assemblies 70 having different gear ratios so that the buckles 40 ) There is an effect that the moving speed can be set easily or the gear assembly 70 can be easily replaced.

Since the drive motor 20 and the feed screw 60 are assembled to the bracket 10 in a state in which the feed screw 60 is in parallel and the gear assembly 70 is temporarily engaged with the drive motor 20 and the feed screw 60, If the assembly 70 alone is detached, the entire disassembly and inspection of the buckle moving apparatus 1 can be easily performed.

As shown in Figs. 2 and 7, the driven gear 72 includes a nut portion N and a gear portion G. As shown in Fig.

The gear portion G is engaged with the driving gear 71 in a state of being engaged with the periphery of the nut portion N. The center portion of the nut portion N is threadably engaged with the feed screw 60, (G) to the feed screw (60). When the nut portion (N) rotates, the threaded feed screw (60) advances or retracts in accordance with the rotational direction of the drive motor (20).

An insertion hole having the same shape as the circumference of the nut portion N is formed in the center portion of the gear portion G so that the nut portion N is inserted and coupled. The nut portion N may be coupled to the gear portion G by various methods such as interference fit or bolt connection or may be integrally joined by insert injection molding.

Injection injection molding is an injection molding method for integrating dissimilar or unusual plastic or non-plastic parts (metal, electric wire, magnet, etc.) in a mold. .

The nut portion N is made of a synthetic resin such as polyacetal having resistance to fatigue, toughness and abrasion resistance, and the gear portion G is made of a steel ship used as a shipbuilding material. When the nut portion N is made of polyacetal, there is an effect that the noise is reduced at the portion where the nut member N is engaged with the thread during the operation of the buckle moving device 1. The gear portion G formed of the steel wire can maintain the strength for a long time .

The operation of the buckle moving device 1 of the seatbelt according to the embodiment of the present invention will be described below.

As shown in Fig. 8A, normally, the buckle 40 is held in the first state C1. The first state C1 indicates the state of the buckle moving device 1 before the passenger boarding the vehicle or after the passenger wears the seatbelt.

Referring to FIG. 8B, when a passenger opens a car door or seats on the seat 2, a detection sensor (not shown) provided inside the vehicle sends a signal to the seatbelt control device 100 Whereby the buckle 40 is raised to the second state C2 by the drive of the drive motor 20 so that the occupant can easily engage the tongue of the seat belt with the buckle 40. [ The detection signals of the first sensor unit S1 and the second sensor unit S2 are sent to the seatbelt control device 100 when the first state C1 to the third state C3 are switched.

When the buckle moving device 1 is switched to the second state C2, a user who is inconvenient to the body such as the elderly or a patient or a user wearing a dress with a bulky coat such as a jacket can easily wear the seat belt .

When the tongue of the seat belt is fastened to the buckle 40, the buckle moving device 1 returns to the first state C1 again. When the tongue is fastened to the buckle 40, a sensing sensor (not shown) provided inside the buckle 40 sends a signal to the seat belt control device 100, whereby the driving motor 20 is rotated in the reverse direction So that the buckle 40 is slowly lowered, thereby loosening the seat belt automatically.

Referring to FIG. 8C, when a dangerous element is detected in the vehicle driving mode, that is, when a collision of the vehicle is detected or when a sudden turn of the vehicle is detected, the buckle moving device 1 quickly buckles the buckle 40 downward to further restrain the occupant And is switched to the third state (C3, safety mode).

The switching to the third state (C3) has the effect of restricting the passenger more firmly by the seatbelt when a dangerous element such as a vehicle collision occurs, effectively preventing the occupant from departing from the position and warning the passenger And it has the effect of making the accident ready in advance.

According to the present invention, since the switching portion 52 of the cable 50 is switched in the state of being in tight contact with the rotating bearing 30, the cable 50 connected to the buckle 40 when the buckle 40 is moved It is possible to provide the buckle moving device 1 of the seat belt in which friction is generated or the load is not applied to the drive motor 20 more than necessary.

The drive motor 20 and the feed screw 60 are axially different and arranged in parallel and the gear assembly 70 is coupled to the drive motor 20 and the feed screw 60 on the opposite side of the cable 50 The buckle moving device 1 of the seat belt is configured so that the moving speed of the buckle 40 can be easily adjusted, each component can be easily replaced at the time of failure or inspection, and the installation area of the entire device can be reduced .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious to those who have. Accordingly, it should be understood that such modifications or alterations should not be understood individually from the technical spirit and viewpoint of the present invention, and that modified embodiments fall within the scope of the claims of the present invention.

1: buckle moving device 10: bracket
20: drive motor 30: bearing
40: Buckle 50: Cable
60: feed screw 70: gear assembly
80: roller 100: seat belt control device
200: air bag control device 300: engine control device
400: Cluster control device 500: Cruise control device
11: body 31: bearing shaft
12: motor mounting portion 30a:
13: Bearing mounting part C: Unevenness
14: upper cover 60a:
15: Closed cover B: Bush
51: upper side portion S1: first sensor portion
52: switching part S2: second sensor part
53:
71: drive gear
72: driven gear
73: Housing
74: cover

Claims (11)

Brackets;
A driving motor fixed to the bracket;
A bearing spaced apart from the drive motor and rotatably coupled to the bracket;
A buckle to which the tongue of the seat belt is fastened;
A cable coupled to the buckle and having one side in close contact with the bearing in a direction to wind the bearing;
A feed screw coupled to an end of the cable at an opposite side of the buckle; And
And a gear assembly for transmitting the drive motor and the feed screw,
The gear assembly includes:
A driving gear fixedly coupled to a rotating shaft of the driving motor;
A driven gear including a nut portion threadedly engaged with the feed screw while passing through the feed screw at a central portion to rotate in conjunction with the feed screw, and a gear portion coupled to the nut portion and gear engaged with the drive gear; And
And a housing accommodating the drive gear and the driven gear and opening toward the opposite side of the feed screw,
Wherein when the drive motor is operated, the bearing rotates with movement of the cable. The method according to claim 1,
Wherein an outer circumferential surface of the bearing is concave so that a contact area between the bearing and the cable is increased. The method according to claim 1,
The cable,
An upper portion coupled to the buckle;
A switching portion extending from the upper portion and brought into close contact with the bearing; And
And a lower portion extending from the switching portion and coupled with the feed screw,
Wherein the upper portion and the lower portion form an angle of 0 to 180 degrees. The method of claim 3,
And a roller rotatably coupled to the bracket,
And the roller is brought into close contact with the lower side of the upper portion on the opposite side of the bearing.
delete delete The method according to claim 1,
And the nut portion is insert-molded by a gear portion. The method according to claim 1,
The gear assembly includes:
Further comprising a cover covering the drive gear and the driven gear and coupled with the housing. The method according to claim 1,
Wherein a surface of at least one of the cable and the bearing is formed with irregularities so that slippage does not occur between the cable and the bearing when the driving motor is operated. The method according to claim 1,
The bracket includes a first sensor unit,
Wherein the feed screw is provided with a second sensor unit for sensing a position of the first sensor unit. 11. The method according to any one of claims 1 to 4, 7 to 10,
Wherein the drive motor and the feed screw are axially different and arranged in parallel,
And the gear assembly is coupled to the drive motor and the feed screw on the opposite side of the cable.

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