KR20140030494A - Seat belt clutch gear and seat belt retractor - Google Patents

Seat belt clutch gear and seat belt retractor Download PDF

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Publication number
KR20140030494A
KR20140030494A KR1020120095824A KR20120095824A KR20140030494A KR 20140030494 A KR20140030494 A KR 20140030494A KR 1020120095824 A KR1020120095824 A KR 1020120095824A KR 20120095824 A KR20120095824 A KR 20120095824A KR 20140030494 A KR20140030494 A KR 20140030494A
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KR
South Korea
Prior art keywords
gear
clutch
seat belt
spool
cover
Prior art date
Application number
KR1020120095824A
Other languages
Korean (ko)
Inventor
문건웅
Original Assignee
현대모비스 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대모비스 주식회사 filed Critical 현대모비스 주식회사
Priority to KR1020120095824A priority Critical patent/KR20140030494A/en
Publication of KR20140030494A publication Critical patent/KR20140030494A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/34—Belt retractors, e.g. reels
    • B60R22/36—Belt retractors, e.g. reels self-locking in an emergency
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/34—Belt retractors, e.g. reels
    • B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/34—Belt retractors, e.g. reels
    • B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
    • B60R2022/4666—Reels with means to tension the belt in an emergency by forced winding up characterised by electric actuators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B60R21/0136—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to actual contact with an obstacle, e.g. to vehicle deformation, bumper displacement or bumper velocity relative to the vehicle

Abstract

Seat belt clutch gears and seat belt retractors that operate to seat or unwind seat belts to restrain passengers by winding the seat belts to prevent them from being unwound in a car accident. Is provided.

Figure P1020120095824

Description

Seat belt clutch gear and seat belt retractor {SEAT BELT CLUTCH GEAR AND SEAT BELT RETRACTOR}

The present invention relates to a seat belt clutch gear and a seat belt retractor, and more particularly, the seat belt clutch gear and the seat belt retractor operate to wind or loosen the seat belt so as not to be unwound by winding the seat belt in an automobile accident. It is about.

In general, a vehicle is equipped with an airbag that is a safety device for preventing a passenger from directly injuring the structure of the vehicle in the event of an accident.

The airbag is designed to protect the passenger at an appropriate pressure when the distance between the airbag and the passenger is a specific distance.

However, in the event of a real car accident (collision), the passenger is pushed forward and the distance between the airbag and the passenger is close, and the passenger is injured by excessive initial pressure of the airbag or is still in full bloom. There is a fear that the airbag not protected by the proper pressure may not be protected.

Therefore, the vehicle is equipped with a seat belt for restraining the passenger sitting on the seat.

The seat belt is wound and mounted on the spool, and is released from the spool when pulled by the passenger, and is rewound to the spool when the pulling force is released.

However, in the event of an automobile accident (collision), the seat belt is pulled and released from the spool by the force that the passenger is pushed forward. Accordingly, the seat belt is loosened, and the passenger is pushed forward to be pushed forward with the airbag. There is a risk of getting closer.

In order to prevent this, the vehicle is equipped with a seat belt retractor which rotates the spool during an accident (collision) to wind the seat belt and restrains the rotation of the spool so that the seat belt is not loosened.

The problem to be solved by the present invention is that the seat belt is operated to wind or unwind, but in the event of an automobile accident, the seat belt is bound so as not to be unwound and the passenger is restrained, and the seat belt that restrains the passenger can be reliably prevented from being released. To provide a seat belt clutch gear and a seat belt retractor.

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

In order to achieve the above object, the seat belt clutch gear according to an embodiment of the present invention is coupled to the ring gear, one side of the ring gear, the rotating shaft of the spool through which the seat belt is wound or unrolled, through the spool A clutch cover coupled to the rotatable clutch plate, the other side of the ring gear, and formed with a guide hole, and a clutch unit disposed between the clutch plate and the clutch cover and inserted into the guide hole to interrupt rotation of the spool. Include.

In addition, the seat belt retractor according to an embodiment of the present invention includes a gear train connected to the motor and rotated by the driving force of the motor, and a seat belt clutch gear engaged with the gear train, wherein the seat belt clutch gear A clutch plate engaged with the gear train and one side of the ring gear and a rotating shaft of the spool in which the seat belt is wound or unrolled therethrough, the clutch plate being rotatable with respect to the spool, and coupled to the other side of the ring gear. And a clutch cover having a guide hole, and a clutch unit disposed between the clutch plate and the clutch cover and inserted into the guide hole to intermittently rotate the spool.

The details of other embodiments are included in the detailed description and drawings.

The seat belt clutch gear and the seat belt retractor according to the present invention have an effect of facilitating the assembly of the clutch unit between the clutch plate and the clutch cover because the clutch unit for intermittent rotation of the spool is modularized.

In addition, since the rotation of the lever cover is constrained by the pressing member, the pivotal catching member can be held in the fixed catching member, so that the rotation of the spool coupled to the fixed catching member is kept constrained. There is also an effect that the seat belt restrained from being released from the spool can be secured.

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

1 is a perspective view of the seat belt retractor in accordance with an embodiment of the present invention,
2 is an exploded perspective view of a seat belt retractor according to an embodiment of the present invention;
3 is a cross-sectional view of the coupled state of the seat belt retractor according to an embodiment of the present invention,
4 is a coupling diagram of the clutch unit shown in FIG.
5 is a view showing an assembly procedure of the clutch gear shown in FIG.
6 and 7 show the operation of the clutch gear.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, the seat belt clutch and the seat belt retractor according to the embodiment of the present invention will be described with reference to the drawings.

1 is an exploded perspective view of a seat belt retractor 100 according to an embodiment of the present invention, Figure 2 is an exploded perspective view of a seat belt retractor 100 according to an embodiment of the present invention, Figure 3 is an embodiment of the present invention 4 is a sectional view of the clutch unit 60 shown in FIG. 2.

1 to 4, the seat belt retractor 100 according to the embodiment of the present invention includes a spool 10, a seat belt clutch gear 20, and a gear train 30.

The spool 10 is a configuration in which the seat belt 7 is wound or unwound, and is supported by a rectangular cylindrical support bracket 1 and is rotatably disposed in the support bracket 1, and the rotation shaft 15 of the spool 10 is spooled. ) Is projected out of the support bracket (1).

The seat belt clutch gear 20 is connected to the rotation shaft 15 of the spool 10 to restrain or release the rotation of the spool 10. That is, when the spool 10 is restrained by the seat belt clutch gear 20, the seat belt 7 is not released from the spool 10, and the spool 10 is restrained from the seat belt clutch gear 20. When released, the seat belt 7 can be released from the spool 10.

The seat belt clutch gear 20 includes a ring gear 21 and a clutch unit 60 disposed in the ring gear 21 to intermittently (restrain or release) the rotation of the spool 10. Detailed description of the seat belt clutch gear 20 will be described later.

The gear train 30 is connected to the motor 2 and rotated by the driving force of the motor 2. The gear train 30 meshes with the ring gear 21 of the clutch gear 20 to rotate the ring gear 21.

The gear train 30 in this embodiment consists of three spur gears. That is, the gear train 30 may include a motor gear 32 coupled to the rotation shaft 3 of the motor 2, a first sub gear 34 meshed with the motor gear 32 and rotated in opposite directions, and a first one. And a second subgear 36 which meshes with the subgear 34 and rotates in the opposite direction and which engages the ring gear 21. Here, the first subgear 34 has a gear having a large diameter and a gear having a small diameter, which is formed in a two-stage structure. That is, the first subgear 34 includes a first gear 33 having a larger diameter and engaging the motor gear 32, and a second gear 35 having a smaller diameter than the first gear 33. . The first gear 33 and the second gear 35 are formed concentrically and rotated at the same angle with each other. 6 and 7, the second subgear 36 has a two-stage structure in which a gear having a large diameter and a gear having a small diameter are formed as a set, similar to the first sub gear 34. do. That is, the second subgear 36 has a larger diameter and is smaller in diameter than the third gear 37 and the third tooth 37 engaged with the second gear 35 of the first subgear 34. The fourth gear 38 is formed to be engaged with the ring gear 21. The third gear 37 and the fourth gear 38 are also formed concentrically and rotated at the same angle with each other.

On the other hand, in the support bracket 1, the gear housing 40 is disposed on the surface on which the rotating shaft 15 of the spool 10 protrudes. The rotating shaft 15 of the spool 10 rotatably penetrates the gear housing 40.

In addition, the gear housing 40 is formed with a through hole 42 through which the rotation shaft 3 of the motor 2 passes. The motor 2 is disposed outside the gear housing 40, and after the rotation shaft 3 is disposed inside the gear housing 40 through the through hole 42, the motor 2 is screwed 4. It is coupled to the gear housing 40 through.

The gear train 30 is accommodated in the gear housing 40. The motor gear 32 is coupled to the rotation shaft 3 of the motor 2 and accommodated in the gear housing 40. In addition, the gear housing 40 has a first sub gear shaft 44 to which the first sub gear 34 is rotatably coupled, and a second sub gear shaft to which the second sub gear 36 is rotatably coupled ( 46 are formed respectively, so that the first subgear 34 and the second subgear 36 are also accommodated in the gear housing 40.

The seat belt clutch gear 20 is coupled to the ring gear 21 that is engaged with the fourth gear 38 of the gear train 30, and is coupled to one side of the ring gear 21 and the rotation shaft 15 of the spool 10. ), Through which the clutch plate 22 rotatable with respect to the spool 10, the clutch cover 28 which is coupled to the other side of the ring gear 21, and has a guide hole 28c, and the clutch plate 22 and the clutch. The clutch unit 60 is disposed between the cover 28 and inserted into the guide hole 28c to intermittently rotate the spool 10.

The clutch plate 22 and the clutch cover 28 are fixed inside the ring gear 21 and rotate with the ring gear 21.

The clutch plate 22 is formed in a circular shape so as to be inserted into the ring gear 21, and a through hole 22a through which the rotating shaft 15 of the spool 10 penetrates is formed at the center thereof.

Screw holes 22b and 28a are formed in the clutch plate 22 and the clutch cover 28, respectively, and the clutch plate 22 and the clutch cover 28 are coupled to each other through the screw 5 so that the ring gear 21 Is fixed to.

The clutch unit 60 is disposed in the lever plate 62 through which the rotating shaft 15 of the spool 10 penetrates, and rotatably disposed in the lever plate 62, and inserted into the guide hole 28c, so that the ring gear 21 is provided. Rotating engaging member (65) and rotational locking member (65) rotatably coupled to the lever plate (62) to control the rotation of the spool (10) while being rotated while being guided by the guide hole (28c) at the time of rotation. It comprises a lever cover 64, and an elastic member 67 for providing a rotational restoring force to the pivot locking member (65).

Before the clutch unit 60 is disposed between the clutch plate 22 and the clutch cover 28, the lever plate 62, the elastic member 67, the pivoting member 65 and the lever cover 64 are first engaged. 4 and then modularized as shown in FIG. 4, and then placed in the ring gear 21 between the clutch plate 22 and the clutch cover 28. In this way, since the clutch unit 60 is mounted in the ring gear 21 after being modularized, assemblability is improved.

The pivot catching member 65 is rotatably disposed between the lever plate 62 and the lever cover 64. At the time of rotation of the ring gear 21, the pivot locking member 65 rotates while being guided by the guide hole 28c to intermittently rotate the spool 10 so that the pivot locking member 65 has a guide hole 28c. The operation pin (65a) is inserted into the guide is formed.

In addition, the fixed locking member 23 is coupled to the rotating shaft 15 of the spool 10 penetrating the clutch plate 22 so as to rotate together with the spool 10.

The lever plate 62 is formed in a circular shape, and a through hole 62a is formed at the center thereof. The fixed catching member 23 is inserted into the through hole 62a, and is disposed at a position where the pivoting catching member 65 can be caught at the time of rotation.

The pivot catching member 65 is rotated by moving the operating pin 65a along the guide hole 28c when the ring gear 21 is rotated so as to be caught by the fixed catching member 23, thereby fixing the fastening member 23. Rotate). When the fixed locking member 23 is rotated while the spool 10 is also rotated to wind the seat belt (7). In addition, the pivot catching member 65 is rotated from the stationary catching member 23 while the operating pin 65a is moved along the guide hole 28c and restored to its original position at the time of the reverse rotation of the ring gear 21. The jam is released. In this way, the swing catching member 65 is to be locked or released by the fixed catching member 23 to interrupt the rotation of the spool 10.

The fixed engaging member 23 is provided with a plurality of teeth on the circumferential surface. The plurality of teeth are formed by bending all at once in the rotational direction of the spool 10 when the seat belt 7 is released. The fixed locking member 23 has an insertion hole 23a for inserting and coupling the rotating shaft 15 of the spool 10 to the center thereof.

Meanwhile, a washer 26 is disposed between the clutch plate 22 and the fixed locking member 23 to prevent abrasion due to interference. The rotation shaft 15 of the spool 10 sequentially penetrates through the support bracket 1, the gear housing 40, the clutch plate 22, and the washer 26, and then inserts an insertion hole of the fixing member 23 ( It is inserted into the 23a) is coupled with the fixed locking member (23). Here, the rotating shaft 15 and the fixed locking member 23 of the spool 10 may be coupled to the key joint which is a representative coupling method of the gear and the shaft, but in this embodiment, the fitting coupling method for easy assembly. This applies. That is, the rotating shaft 15 of the spool 10 is made of a rectangular cross section and the insertion hole 23a of the fixed locking member 23 is also squared so that the fixed locking member 23 can be rotated together with the spool 10. Is formed. Of course, the cross-sectional shape of the rotary shaft 15 of the spool 10 and the shape of the insertion hole 23a are not limited to the quadrangle, and the fixing member 23 may be rotated together with the spool 10. As long as it is a shape, it can be variously deformed in a cross shape, a triangle, etc.

The lever plate 62 is formed with a protruding coupling shaft 62b to which the pivotal locking member 65 is rotatably coupled. The pivot catching member 65 is coupled to the coupling shaft 62b to be rotatable about the coupling shaft 62b.

When the pivot catching member 65 is caught by one of the plurality of teeth formed in the fixed catching member 23, the spool 10 is not rotated in the direction in which the seat belt 7 is released, so that the seat belt 7 is When the gear train 30 and the ring gear 21 are rotated by the driving of the motor 2 at this time, the seat belt 7 is wound around the spool 10.

In addition, the elastic member 67 is attached to the engaging shaft 62b of the lever plate 62 together with the pivotal locking member 65. When the ring gear 21 is reversed in a state where the swing catching member 65 is locked to the fixed catching member 23, the elastic member 67 is caught from the catching fastening member 23. The rotation restoring force is provided to the swing catching member 65 to be restored to the released position.

In addition, when the pivot catching member 65 is restored by the rotation restoring force of the elastic member 67, the latching plate 62 protrudes from the lever plate 62 to limit the restoring position of the pivoting catching member 65. .

Thus, the seat belt clutch gear 20 is completed by modularizing the clutch unit 60 as shown in FIG. 4, and then arranged between the clutch plate 22 and the clutch cover 28. The clutch gear 20 is also accommodated in the gear housing 40 like the gear train 30.

In the gear housing 40, a gear cover 50 that covers the accommodated gear train 30 and the seat belt clutch gear 20 does not come out is coupled through the screw 6. Here, the screw 6 is coupled to the support bracket 1 while simultaneously coupling the gear housing 40 and the gear cover 50 so that the gear housing 40 is fixed to the support bracket 1. In the gear housing 40 and the gear cover 50, screw holes 48 and 52 to which the screw 6 is coupled are formed, respectively.

The through hole 28b is formed in the clutch cover 28. The reason why the through hole 28b is formed in the clutch cover 28 is to allow the pressing member 29 to be described later to press the lever cover 64 through the through hole 28b.

That is, the clutch unit 60 is rotatably disposed between the clutch plate 22 and the clutch cover 28. Therefore, if there is no structure that restrains the rotation of the clutch unit 60, the clutch unit 60 is rotated together with the ring gear 21 when the ring gear 21 is rotated, whereby the actuating pin of the turning member 65 Since the 65a is not moved along the guide hole 28c and the turning locking member 65 is not caught by the fixed locking member 23, a structure for restraining the rotation of the clutch unit 60 is required.

Accordingly, the seat belt clutch gear 20 restrains the rotation of the clutch unit 60 so that the pivoting locking member 65 can be rotated while being guided by the guide hole 28c when the ring gear 21 is rotated. It further comprises a pressing member (29).

The lever cover 64 is formed with an insertion groove 64a into which the pressing member 29 is inserted, so that the rotation of the clutch unit 60 may be restricted by the pressing member 29. The plurality of insertion grooves 64a are formed on a surface of the lever cover 64 that faces the pressure member 29.

The pressing member 29 passes through the through hole 28b formed in the clutch cover 28 and is disposed between the lever cover 64 and the gear cover 50.

The pressing member 29 is formed in a hollow shape, and the support part 55 inserted into the hollow of the pressing member 29 protrudes from the inside of the gear cover 50. The pressing member 29 is inserted into and supported by the support part 55.

The pressing member 29 includes a body portion 29a inserted into the support portion 55 and a locking portion 29b formed in plural along the circumference of the body portion 29a. Each locking portion 29b is inserted into each insertion groove 64a formed in the lever cover 64 to prevent the lever cover 64 from rotating, thereby restraining the rotation of the clutch unit 60.

FIG. 5 is a diagram illustrating an assembling procedure of the seat belt clutch gear 20 shown in FIG. 2.

2 and 5, the assembly order of the seat belt clutch gear 20 and the assembly order of the seat belt retractor 100 will be described. Here, the assembling order of the seat belt clutch gear 20 and the assembling order of the seat belt retractor 100 are only one embodiment, and as long as the seat belt retractor 100 is assembled so that the seat belt retractor 100 can be operated, The order of assembly may change.

First, the elastic member 67 and the swing catching member 65 are mounted on the coupling shaft 62b of the lever plate 62, and then the lever cover 64 is coupled to the coupling shaft 62b to thereby engage the clutch unit 60. ) Is modular.

Thereafter, the spool 10 is rotatably disposed on the support bracket 1 such that the rotation shaft 15 of the spool 10 protrudes out of the support bracket 1. Thereafter, the gear housing 40 is disposed on the support bracket 1 so that the rotation shaft 15 of the spool 10 protruding outward of the support bracket 1 penetrates.

Thereafter, the clutch plate 22 is inserted into the ring gear 21 at one side of the ring gear 21 to be fixed so as not to rotate.

Thereafter, while the ring gear 21 is accommodated in the gear housing 40, the rotation shaft 15 of the spool 10 passes through the through hole 22a of the clutch plate 22, and the through hole of the clutch plate 22. After allowing the rotating shaft 15 of the spool 10 penetrating the 22a to pass through the washer 26, the rotating shaft 15 of the spool 10 is inserted into the insertion hole 23a of the fixing member 23. To fix the locking member 23 to the rotating shaft 15 of the spool 10.

Subsequently, while the clutch unit 60 is inserted into the ring gear 21 from the other side of the ring gear 21, the fastening member 23 is inserted into the through hole 62a of the lever plate 62 to insert the clutch unit. It is arranged inside the (60).

Thereafter, the clutch cover 28 is mounted on the other side of the ring gear 21 so that the actuating pin 65a of the pivot locking member 65 is inserted into the guide hole 28c of the clutch cover 28. After inserting inward, the clutch plate 22 and the clutch cover 28 are coupled through the screw 5.

Thereafter, the first subgear 34 is mounted on the first subgear shaft 44 of the gear housing 40.

Thereafter, the second sub gear 36 is mounted on the second sub gear shaft 46 of the gear housing 40 so that the second sub gear 36 is connected to the first sub gear 34 and the ring gear 21. To interlock.

Subsequently, the motor 2 is disposed outside the gear housing 40 so that the rotating shaft 3 of the motor 2 penetrates the through hole 42 of the gear housing 40 and the motor 2 through the screw 4. ) Is coupled to the gear housing (40).

Thereafter, the motor gear 32 is mounted on the rotation shaft 3 of the motor 2 so that the motor gear 32 meshes with the first sub gear 34.

Subsequently, after the pressing member 29 is inserted into the outer side of the support part 55 formed in the gear cover 50, the pressing member 29 penetrates the through hole 28b formed in the clutch cover 28 to engage the locking part ( The gear cover 50 is brought into contact with the gear housing 40 and the gear cover 50 is screwed through the screw 6 so that 29b) is inserted into the insertion groove 64a formed in the lever cover 64. And the gear housing 40 is coupled to the support bracket 1 to complete the assembly of the seat belt retractor 100.

6 and 7 show the operation of the seat belt clutch gear 20.

Referring to Figures 2, 6 and 7, the operation of the seat belt clutch gear 20 and the seat belt retractor 100 are as follows.

First, before the automobile accident is caused, as shown in FIG. 6, the turning catching member 65 is in a state of being released from the fixing catching member 23. Therefore, since the spool 10 coupled with the fixing member 23 is rotatable, the seat belt 7 wound on the spool 10 can be released from the spool 10. In this state, the passenger can adjust the seat belt 7 to fit his body.

On the other hand, when an automobile accident occurs, the seat belt 7 must restrain the passenger from being pushed forward. That is, the seat belt 7 should not be released from the spool 10. Therefore, when the motor vehicle accident occurs, the motor 2 is driven. Typically, the vehicle is provided with a plurality of sensors for detecting an accident, a control device (for example, Electronic Control Unit, Airbag Control Unit, etc.) for controlling the vehicle in accordance with the value detected by the sensor As provided, the motor 2 can be driven by the control of the controller.

When the motor 2 is driven, the gear train 30 is rotated, and thus the ring gear 21 engaged with the gear train 30 is rotated.

When the ring gear 21 is rotated, the clutch cover 28 fixed inside the ring gear 21 is rotated together with the ring gear 21. As a result, the actuation pin 65a of the swing catching member 65 is moved along the guide hole 28c of the clutch cover 28, so that the swing catching member 65 is rotated and fixed as shown in FIG. It is caught by the locking member 23.

Therefore, the spool 10 coupled with the fixed locking member 23 can no longer be rotated, so that the seat belt 7 wound on the spool 10 is no longer loosened from the spool 10, so that the seat belt ( 7) may restrain passengers from being pushed forward.

On the other hand, the release of the swing catching member 65 from the fixed catching member 23 is made by the reverse rotation of the motor 2. That is, when the motor 2 is rotated in reverse, the turning pin 65a of the swing catching member 65 is moved to its original position along the guide hole 28c of the clutch cover 28, whereby the swing catching member 65 is moved. 6, the seat belt 7 wound around the spool 10 can be released from the spool 10 by being reversed and released from the fixed locking member 23 as shown in FIG. Will be.

As described above, in the seat belt clutch gear 20 and the seat belt retractor 100 according to the present invention, since the clutch unit 60 for controlling the rotation of the spool 10 is modularized, the clutch plate 22 is used. And the clutch unit 60 is easily assembled between the clutch cover 28.

In addition, since the rotation of the lever cover 64 is restrained by the pressing member 29, the pivotal catching member 65 can be held in the fixed catching member 23, and thus, the fixed catching member 23 The state in which the rotation of the coupled spool 10 is restrained is maintained so that the seat belt 7 restraining the passenger is not released from the spool 10 so that the passenger restraint can be secured.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative and non-restrictive in every respect. The scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalents thereof are included in the scope of the present invention Should be interpreted.

1: support bracket 2: motor
10: Spool 15: Rotating shaft of spool
20: clutch gear 21: ring gear
22: clutch plate 23: fixed locking member
28: clutch cover 28b: through hole
28c: guide hole 29: pressure member
29a: body portion 29b: locking portion
30: gear train 32: motor gear
34: first subgear 36: second subgear
40: gear housing 50: gear cover
55: support portion 60: clutch unit
62: lever plate 62c: locking jaw
64: lever cover 64a: insertion groove
65: swing locking member 65a: operating pin
67: elastic member 100: seat belt retractor

Claims (22)

Ring gears;
A clutch plate coupled to one side of the ring gear and rotatable with respect to the spool through a rotating shaft of the spool in which the seat belt is wound or unwound;
A clutch cover coupled to the other side of the ring gear and having a guide hole formed therein; And
And a clutch unit disposed between the clutch plate and the clutch cover and inserted into the guide hole to control rotation of the spool. The method according to claim 1,
The clutch unit,
A lever plate through which the rotating shaft of the spool penetrates,
The seat belt clutch gear is rotatably disposed on the lever plate and inserted into the guide hole, and includes a pivoting member intermittent to rotate the spool while being guided by the guide hole during rotation of the ring gear. The method according to claim 2,
Seat belt clutch gear is formed in the pivoting engaging member is formed with a guide pin is inserted into the guide hole. The method according to claim 2,
The clutch unit further includes an elastic member for providing a rotational restoring force to the pivotal locking member. The method of claim 4,
The lever plate is a seat belt clutch gear is formed in the lever plate protruding engaging jaw for limiting the restoring position of the pivoting member when the pivoting member is restored by the rotation restoring force of the elastic member. The method according to claim 2,
Seat belt clutch gear coupled to the rotating shaft of the spool the locking member is locked or released to the rotating shaft of the spool so that the rotating locking member to control the rotation of the spool. The method according to claim 2,
The clutch unit further includes a lever cover for rotatably coupling the pivot catching member to the lever plate. The method of claim 7,
The clutch unit is rotatably disposed between the clutch plate and the clutch cover,
And a pressing member for restraining the rotation of the clutch unit so that the pivot catching member can rotate while being guided by the guide hole. The method according to claim 8,
Seat belt clutch gear is formed in the lever cover is inserted into the lever cover is inserted so that the clutch unit is rotated by the pressing member. A gear train connected to a motor and rotated by a driving force of the motor; And
And a seat belt clutch gear meshed with the gear train.
The seat belt clutch gear,
A ring gear engaged with the gear train,
A clutch plate coupled to one side of the ring gear and rotatable with respect to the spool through a rotating shaft of the spool in which the seat belt is wound or unwound;
A clutch cover coupled to the other side of the ring gear and having a guide hole formed therein;
And a clutch unit disposed between the clutch plate and the clutch cover, the clutch unit being inserted into the guide hole to interrupt rotation of the spool. The method of claim 10,
The clutch unit,
A lever plate through which the rotating shaft of the spool penetrates,
The seat belt retractor is rotatably disposed on the lever plate and inserted into the guide hole, and includes a pivoting member intermittent to rotate the spool while being guided by the guide hole during rotation of the ring gear. The method of claim 11,
The seat belt retractor is formed in the pivoting member is formed with a driving pin is inserted into the guide hole to guide. The method of claim 11,
The clutch unit further includes a resilient member providing a rotational restoring force to the pivotal locking member. The method according to claim 13,
And a seating jaw protruding from the lever plate when the pivoting locking member is restored by the rotation restoring force of the elastic member, and a latching jaw restricting the restoring position of the pivoting locking member. The method of claim 11,
A seat belt retractor coupled to the rotating shaft of the spool for holding or releasing the rotating locking member so that the rotating locking member can control the rotation of the spool. The method of claim 11,
The clutch unit further includes a lever cover for rotatably coupling the pivot catching member to the lever plate. 18. The method of claim 16,
The clutch unit is rotatably disposed between the clutch plate and the clutch cover,
And a pressing member for restraining the rotation of the clutch unit so that the pivot catching member can rotate while being guided by the guide hole. 18. The method of claim 17,
And the lever cover is provided with an insertion groove into which the pressing member is inserted such that the clutch unit is constrained to rotate by the pressing member. 19. The method of claim 18,
A gear housing through which the rotating shaft of the spool penetrates and accommodates the gear train and the seat belt clutch gear;
And a gear cover coupled to the gear housing and covering the gear train and the seat belt clutch gear housed in the gear housing. The method of claim 19,
The through hole is formed in the clutch cover,
The pressing member is a seat belt retractor is disposed between the lever cover and the gear cover through the through hole. The method of claim 19,
The insertion groove is formed in plurality,
The gear cover is formed with a support portion into which the pressing member is inserted,
The pressing member, the seat belt retractor including a body portion to be inserted into the support portion, the engaging portion is formed in a plurality along the circumference of the body portion is inserted into each of the insertion groove. The method of claim 10,
The gear train,
A motor gear coupled to the rotating shaft of the motor,
A first sub gear meshed with the motor gear and rotated in an opposite direction;
And a second subgear meshed with the first subgear to rotate in the opposite direction and engaged with the ring gear.
KR1020120095824A 2012-08-30 2012-08-30 Seat belt clutch gear and seat belt retractor KR20140030494A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120095824A KR20140030494A (en) 2012-08-30 2012-08-30 Seat belt clutch gear and seat belt retractor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120095824A KR20140030494A (en) 2012-08-30 2012-08-30 Seat belt clutch gear and seat belt retractor

Publications (1)

Publication Number Publication Date
KR20140030494A true KR20140030494A (en) 2014-03-12

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