CN113561930A

CN113561930A - Split structural safety belt retractor

Info

Publication number: CN113561930A
Application number: CN202111021129.7A
Authority: CN
Inventors: 雷于杨; 何晓昌; 韩阳; 周芝彪
Original assignee: CHONGQING GUANGDA INDUSTRIAL CO LTD
Current assignee: CHONGQING GUANGDA INDUSTRIAL CO LTD
Priority date: 2021-09-01
Filing date: 2021-09-01
Publication date: 2021-10-29
Anticipated expiration: 2041-09-01
Also published as: CN113561930B

Abstract

The invention provides a split structural type safety belt retractor which comprises a retractor body and a vehicle sensing assembly, wherein the retractor body and the vehicle sensing assembly are in split arrangement; the retractor body is provided with a locking mechanism used for locking the mesh belt when the mesh belt is rapidly drawn out, the locking mechanism is connected with the vehicle sensing assembly through a linkage device, and the linkage device is used for driving the vehicle sensing assembly to be activated to lock the mesh belt. The split structural type safety belt retractor provided by the invention can realize the turnover of the seat back in a large range, and does not influence the normal vehicle sensing function of the safety belt retractor and the protection of a passenger by a safety mesh belt.

Description

Split structural safety belt retractor

Technical Field

The invention relates to the technical field of vehicle safety belt retractors, in particular to a split structural type safety belt retractor.

Background

Vehicle safety belts are an important component of vehicle occupant restraint systems, and in particular, provide protection to vehicle occupants from or to minimize injury during a traffic accident. With the increasing amount of vehicles kept, the demand of vehicle users for the safety performance of vehicle safety belts is higher and higher.

A retractor is provided in the safety belt system, and the retractor is used for storing the webbing and locking the webbing. The retractor is generally provided with a locking mechanism which allows the webbing to be freely pulled out or rewound when the vehicle is not running or running normally; when the vehicle is subjected to sudden deceleration, inclination and rollover, the vehicle sensing component is activated and acts on the locking mechanism to enable the locking mechanism to emergently lock the winding shaft of the retractor so as to prevent the webbing from being pulled out.

In the prior art, the vehicle-sensing component and the retractor body are integrally arranged, for example, chinese patent (publication number CN111674354A) discloses a vehicle-sensing component and a retractor, wherein the vehicle-sensing component includes: the car feel support, the car feel ball and the car feel arm; the vehicle sensing support is arranged on a mounting base plate of the retractor body, the vehicle sensing arm comprises a clamping end, a connecting portion and a covering end, the covering end is buckled on an opening of the vehicle sensing support to limit a vehicle sensing ball in the vehicle sensing support, the connecting portion is movably connected to the edge of the opening of the vehicle sensing support, and the clamping end is arranged close to the ratchet wheel; when the vehicle sensing ball moves away from the mounting substrate, the clamping end moves towards the mounting substrate through the connecting part and clamps the clamping teeth of the ratchet wheel.

Among the technical scheme of above-mentioned patent, the subassembly is felt to the car is integrated in the coiler body, and the car feels the subassembly promptly and sets up body structure to the coiler body, has simplified the overall structure of coiler. In the case of the rear middle seat, since the rear middle seat is far from the C-pillar, it is generally considered to be disposed on the seat back of the seat when the seatbelt retractor is disposed. However, the seat back of the back row seat generally needs to be overturned due to the use of a driver and a passenger for the automobile, when the overturning speed of the seat back is too high or the overturning angle is too large, the vehicle sensing component is activated to act on the locking mechanism of the retractor to lock the safety webbing, and the webbing cannot be pulled out of the retractor. Therefore, due to the limitation of the mesh belt on the chair back, the overturning range of the chair back is greatly influenced or even can not be overturned, and the use of a driver and passengers for a rear space of the automobile is directly influenced.

Therefore, need design a novel safety belt coiler, this novel safety belt coiler both can realize the upset of the back of the chair in on a large scale, does not influence the normal car of safety belt coiler yet and feels function and safety belt webbing and protect passenger.

Disclosure of Invention

In view of this, the present invention provides a separate structure type seat belt retractor, which can not only realize the seat back turning in a large range, but also does not affect the normal vehicle sensing function of the seat belt retractor and the protection of the seat belt webbing to the passenger.

In order to achieve the purpose, the invention provides a split structural type safety belt retractor which comprises a retractor body and a vehicle sensing component, wherein the retractor body and the vehicle sensing component are in split arrangement; the retractor body is provided with a locking mechanism used for locking the mesh belt when the mesh belt is rapidly drawn out, the locking mechanism is connected with the vehicle sensing assembly through a linkage device, and the linkage device is used for driving the vehicle sensing assembly to be activated to lock the mesh belt.

Preferably, the retractor body is mounted on a seat back of a vehicle seat, and the vehicle sensing component is mounted on a portion, which cannot be turned over, in the vehicle.

Preferably, the car feel assembly is mounted on a seat cushion of a car seat.

Preferably, the locking mechanism includes:

a locking ratchet wheel arranged on one side of the retractor mounting substrate;

the locking cover is fixedly connected to one side of the mounting substrate, a partition plate is arranged in the locking cover to divide the locking cover into a first space and a second space, and the first space covers the locking ratchet wheel;

the clamping jaw is rotatably arranged on the partition plate of the lock cover through a torsion spring and is positioned in the second space of the lock cover, and the clamping jaw is used for being matched with the locking ratchet wheel to lock the reel;

the bracket is rotatably arranged on the partition plate of the lock cover through a bracket shaft and is positioned in the second space of the lock cover, one side of the bracket, facing the clamping jaw, is abutted against the clamping jaw, one side of the bracket, far away from the clamping jaw, is abutted against the side wall of the lock cover through a pressure spring, and under the elastic action of the pressure spring, the bracket exerts supporting force on the clamping jaw to support the clamping jaw;

the driving gear is positioned between the partition plate and the bracket, fixedly sleeved at the shaft end part of the scroll and rotates along with the scroll;

driven gear, rotatable the installing on the bracket through driven gear axle to with the driving gear meshing, driven gear is located the driving gear and keeps away from the one side of bracket axle, and driven gear normally rotates under the normality, and driven gear card dies under the emergency.

Preferably, be equipped with bellied bracket spacer pin on the baffle, the bracket spacer pin with the jack catch is located same one side, and when the jack catch was held up to the bracket under the spring action of pressure spring, the bracket spacer pin was inconsistent in order to realize spacing to the bracket with the bracket simultaneously.

Preferably, the bracket is fan-shaped.

Preferably, the jack catch includes installation end and joint end, and installation end and joint end link to each other through connecting portion, and wherein the installation end passes through the torsional spring is rotatable to be installed on the baffle, the joint end is close to the setting of locking ratchet.

Preferably, the connecting portion is provided with an abutting protrusion, and the abutting protrusion extends towards the direction of the bracket and is used for abutting against the bracket.

Preferably, the linkage comprises:

the shell is provided with a first installation cavity;

the wire wheel assembly is arranged in a first mounting cavity of the shell and comprises a vehicle sensing ratchet wheel and a wire wheel which are clamped into a whole, the vehicle sensing ratchet wheel and the wire wheel are rotatably arranged in the first mounting cavity through a wire wheel shaft, the vehicle sensing ratchet wheel is used for being matched with the vehicle sensing assembly, and the wire wheel is connected with a wire wheel shaft through a coil spring so that the wire wheel can be rewound;

and one end of the inhaul cable is wound on the wire wheel, and the other end of the inhaul cable penetrates through the through hole of the outer shell and is used for winding on the driven gear of the locking mechanism.

Preferably, the pulley comprises a disk-shaped part, and a cylindrical part for winding the cable is arranged on one surface of the disk-shaped part facing the vehicle feeling ratchet wheel;

a plurality of inserting blocks are circumferentially arranged on the periphery of one end, matched with the vehicle sensing ratchet, of the cylindrical part; the car feel ratchet is provided with a plurality of corresponding jacks, and the insertion block is inserted into the jacks so that the wire wheel and the car feel ratchet are connected in a clamping manner into a whole.

The invention has the following beneficial effects:

according to the split structural type safety belt retractor, the vehicle sensing component is separated from the original retractor body, the vehicle sensing component is linked with the locking mechanism on the retractor body through the linkage device, and the linkage device is used for transmitting the locking function of the vehicle sensing component to the locking mechanism of the retractor body, namely, in an emergency state, the vehicle sensing component is activated to act on the locking mechanism through the linkage device to enable the locking mechanism to lock the safety belt webbing. Namely, the split type safety belt retractor provided by the invention has a normal vehicle sensing function and the protection of a passenger by the safety webbing.

During the installation, the coiler body is installed on the back of the chair of seat, and the subassembly is felt to the car then installs in the car for example the cushion one type can not overturn on the position, like this, the subassembly is felt to the car can not receive back of the chair angle regulation's influence and activated, and arbitrary angle can be adjusted to the back of the chair.

In conclusion, the split structural type safety belt retractor provided by the invention can realize the turnover of the seat back in a large range, and does not influence the normal vehicle sensing function of the safety belt retractor and the protection of the safety webbing on passengers

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is an external view of a split-structure seatbelt retractor;

FIG. 2 is a schematic view of a vehicle seat;

fig. 3 is an exploded view of the split-structure seatbelt retractor (locking ratchet not shown);

fig. 4 is an internal structural view of a split-structure type seatbelt retractor;

FIG. 5 is a schematic view of the driving and driven gears of the locking mechanism engaged with the feel assembly via a linkage;

FIG. 6 is a schematic view of another orientation of FIG. 5;

FIG. 7 is a schematic view of the locking mechanism with the driven gear mounted on the carrier;

FIG. 8 is a schematic view of the structure of the pawl of the locking mechanism;

FIG. 9 is a schematic view of the linkage arrangement;

FIG. 10 is an exploded view of the linkage;

FIG. 11 is a schematic view of the engagement of the pulley of the linkage with the ratchet wheel.

Reference numerals

1-retractor body

11-a reel; 12-a mounting substrate; 13-a locking device;

13 a-spool ratchet; 13 b-a locking cap; 13 c-a jaw; 13 d-a bracket; 13 e-a drive gear; 13 f-driven gear; 13 g-bracket limit pin; 13 h-torsion spring; 13 i-the carrier shaft; 13 j-compression spring; 13 k-driven gear shaft; 13 l-platen; 13 m-end cap;

13b 1-baffle; 13b2 — first space; 13b3 — second space;

13c 1-mounting end; 13c 2-snap end; 13c 3-connection; 13c 4-abutment projection;

2-a vehicle feel component;

2 a-a vehicle sensing seat; 2 b-a car feel ball; 2 c-a feel arm; 2 d-second sealing plate

3-a linkage;

3 a-a housing; 3 b-a wire wheel; 3 c-a pull cable; 3 d-a vehicle sense ratchet wheel; 3 e-coil spring; 3 f-a first seal plate;

3a 1-first mounting cavity; 3a 2-line axis; 3a 3-second mounting cavity

3b 1-disc shaped portion; 3b 2-barrel; 3b 3-insert;

3d 1-socket.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more clearly understood, the following further detailed description of the embodiments of the present application with reference to the drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not an exhaustive list of all the embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Fig. 1 is an external view of a split-structure seatbelt retractor;

the invention discloses a split structural type safety belt retractor which comprises a retractor body 1 and a vehicle sensing component 2, wherein the retractor body 1 and the vehicle sensing component 2 are in split arrangement, so that the vehicle sensing component 2 is independent from the original retractor body 1. Wherein, the coiler body 1 is equipped with the locking mechanism 13 that is used for locking the meshbelt when the meshbelt is taken out fast, and this locking mechanism 13 is felt the subassembly 2 with the car and is moved through a aggregate unit 3 linkage between. The linkage 3 is used for transmitting the locking function of the vehicle sensing component 2 to the locking mechanism 13, specifically, when the vehicle has an accident, the vehicle sensing component 2 is activated, and acts on the locking mechanism 13 through the linkage 3, so that the locking mechanism 3 locks the safety webbing. Namely, the split type safety belt retractor provided by the invention has a normal vehicle sensing function and the protection of a passenger by the safety webbing.

As shown in fig. 2, the structural schematic diagram of the car seat is that, during installation, the retractor body 1 is installed on the seat back of the seat, and the car feel assembly is installed on the seat cushion, so that the car feel assembly 2 is not activated by the influence of the angle adjustment of the seat back, and the seat back can be turned over at any angle.

In conclusion, the split structural type safety belt retractor provided by the invention can realize the turnover of the seat back in a large range, and does not influence the normal vehicle sensing function of the safety belt retractor and the protection of a passenger by a safety mesh belt.

It should be noted that the mounting position of the vehicle body feeling module 2 is not limited to the seat cushion of the vehicle seat, and the vehicle body feeling module 2 may be mounted in other positions in the vehicle that do not turn over.

Referring to fig. 1, 3 to 7, fig. 3 is an exploded view of a split seat belt retractor (not shown with a locking ratchet); fig. 4 is an internal structural view of a split-structure type seatbelt retractor; FIG. 5 is a schematic view of the driving and driven gears of the locking mechanism engaged with the feel assembly via a linkage; FIG. 6 is a schematic view of another orientation of FIG. 5; fig. 7 is a schematic structural view showing a structure in which a driven gear of the lock mechanism is mounted on a carrier.

As shown in fig. 1, the locking mechanism 13 is provided on one side of the mounting base plate 12 of the retractor, and is used to lock the webbing withdrawal operation when the webbing is rapidly withdrawn. As shown in fig. 3 and 4, the locking mechanism 13 includes a locking ratchet 13a, a lock cover 13b, a pawl 13c, a bracket 13d, a drive gear 13e, and a driven gear 13 f. Wherein:

the locking ratchet 13a is provided on one side of the retractor mounting substrate 12;

the locking cover 13b is fixedly connected to one side of the mounting substrate 12, a partition plate 13b1 is arranged inside the locking cover 13b to divide the locking cover 13b into a first space 13b2 and a second space 13b3, wherein the first space 13b2 covers the locking ratchet 13 a;

the claw 13c is rotatably mounted on the partition plate 13b1 of the locking cover 13b through a torsion spring 13h and is positioned in the second space of the locking cover 13b, and the claw 13c is used for cooperating with the locking ratchet wheel 13a to realize the locking of the winding shaft 11;

the bracket 13d is rotatably mounted on the partition plate 13b1 of the lock cover through a bracket shaft 13i and is positioned in the second space of the lock cover 13b, one side of the bracket 13d facing the claw 13c is abutted against the claw 13c, one side of the bracket 13d away from the claw 13c is abutted against the side wall of the lock cover 13b through a compression spring 13j, and under the action of the elastic force of the compression spring 13j, the bracket 13d exerts upward supporting force on the claw 13c to support the claw 13c, so that the claw 13c is not contacted with the locking ratchet wheel 13 a;

a driving gear 13e (see fig. 5) is located between the partition 13b1 and the bracket 13d, the driving gear 13e is fixedly sleeved on the shaft end of the reel 11 through a mandrel body (not shown), and the driving gear 13e rotates along with the reel 11;

a driven gear 13f (see fig. 5) is rotatably mounted on the bracket 13d via a driven gear shaft 13k (see fig. 6) and engaged with the driving gear 13e, the driven gear 13f is located on a side of the driving gear 13e away from the bracket shaft 13i, the bracket 13d is provided with a driven gear mounting position 13d1, the driven gear 13f is rotatably mounted on the bracket 13d via a driven gear mounting position 13d1 by a pressing plate 13l, the driven gear 13f normally rotates in a normal state, and the driven gear 13 is locked and does not rotate under the action of the linkage 3 in an emergency state.

Under normal conditions, the bracket 13d lifts the claw 13c upward under the action of the spring force of the compression spring 13j, so that the claw 13c is not in contact with the locking ratchet wheel 13a, and the spool 11 can normally rotate, that is, the safety belt can be normally pulled out and rewound. Specifically, when the webbing is pulled out and rewound, the spool 11 rotates to rotate the drive gear 13e, the drive gear 13e rotates the driven gear 13f, and the webbing can be normally pulled out and rewound.

In an emergency (accident), the bracket 13d can overcome the elastic force of the compression spring 13j to swing downwards, at this time, the claw 13c loses the supporting force of the bracket, and the torsion spring 13h forces the claw 13c to rotate downwards to be in contact with the locking ratchet wheel 13a to block the locking ratchet wheel 13a, so that the winding shaft 11 is locked.

Specifically, in an emergency situation, the sensing assembly 2 of the safety belt system is activated, the sensing assembly 2 acts on the driven gear 13F through the linkage 3 to lock the driven gear 13F and prevent it from rotating, at this time, the spool 11 continues to drive the driving gear 13e to rotate (the driving gear 13e rotates in the direction W in fig. 6), since the driven gear 13F is locked, the driving gear 13e applies a force F with the same trend to the driven gear 13F, the force F forces the bracket 13d to swing downward through the bracket shaft 13k against the elastic force of the compression spring 13j, the bracket 13d swings downward to cause the claw 13c to lose the holding force, and the torsion spring 13h forces the claw 13c to rotate downward to contact with the locking ratchet 13a to lock the locking ratchet 13a, so as to lock the spool 11.

It can be seen from the above embodiments that the locking mechanism 13 is structurally optimized, and the locking mechanism 13 controls the jaw 13c in a manner of circular arc swinging of the bracket 13d, so as to lock the reel 11. The locking mechanism 13 not only can normally realize the locking of the reel 11 under emergency conditions, but also adopts the arrangement mode of circular arc swinging, so that the whole structure of the locking mechanism 13 is compact, and the whole arrangement of the retractor is convenient.

In a further technical scheme, as shown in fig. 4, a protruding bracket limiting pin 13g is arranged on the partition plate 13b1, the bracket limiting pin 13g and the jaw 13c are located on the same side, and when the bracket 13c supports the jaw 13c under the action of the elastic force of the pressure spring 13j, the bracket limiting pin 13g simultaneously abuts against the bracket 13d to limit the bracket 13d, so that the jaw 13c can be kept in a good supporting state. Preferably, in the present invention, the bracket 13d may be formed in a fan shape in order to facilitate interference fit of the bracket 13d with the claw 13c and the bracket stopper pin 13 g.

In a further technical scheme, as shown in fig. 2 and 8, the claw 13c includes a mounting end 13c1 and a clamping end 13c2, the mounting end 13c1 and the clamping end 13c2 are connected by a connecting portion 13c3, wherein the mounting end 13c1 is rotatably mounted on a partition plate 13b1 of the lock cover by a torsion spring 13h, and the clamping end 13c2 is disposed near the locking ratchet 13 a. In order to facilitate the pawl 13c to abut against the bracket 13d in the present invention, the connecting portion 13c3 is provided with an abutting projection 13c4, and the abutting projection 13c4 extends in the direction of the bracket 13d for abutting against the bracket 13 d.

More preferably, the locking mechanism 13 further includes a cover 13m (see fig. 4), and the second space 13b3 of the locking cover 13b is enclosed by the cover 13 m.

Please refer to fig. 9 to 11, fig. 9 is a schematic structural diagram of the linkage device; FIG. 10 is an exploded view of the linkage; FIG. 11 is a schematic view of the engagement of the pulley of the linkage with the ratchet wheel.

As shown in fig. 4, the linkage 3 is for transmitting the locking function of the vehicle feeling assembly 2 to the locking mechanism 13 of the retractor body. As shown in fig. 9 and 10, the linkage device includes: shell 3a, line wheel subassembly and cable 3 c. Wherein the content of the first and second substances,

the housing 3a is provided with a first mounting cavity 3a 1;

the reel assembly is arranged in the first mounting cavity 3a1 and comprises a turning feeling ratchet wheel 3d and a reel 3b which are clamped into a whole, the turning feeling ratchet wheel 3d and the reel 3b are rotatably arranged in the first mounting cavity 3a1 through a reel shaft 3a2, the turning feeling ratchet wheel 3d is used for being matched with the turning feeling assembly 2, and the reel 3b is connected with the reel shaft 3a2 through a coil spring 3e so that the reel 3b can be rewound;

one end of the cable 3c is wound around the pulley 3b, and the other end of the cable 3c passes through a through hole of the housing 3a for winding around a driven gear 13f of the locking mechanism 13, as shown in fig. 5.

As shown in fig. 4 to 7, normally, the bracket 13d lifts the pawl 13c upward by the elastic force of the compression spring 13j, so that the pawl 13c is not in contact with the locking ratchet 13a, and the spool 11 is allowed to rotate normally, that is, the webbing belt can be pulled out and rewound normally. Specifically, when the webbing is pulled out and rewound, the winding shaft 11 rotates to drive the driving gear 13e to rotate, the driving gear 13e drives the driven gear 13f to rotate, the driven gear 13f releases or rewound the cable 3c, the cable 3c drives the reel 3b to rotate, the reel 3b drives the rotation of the inductive ratchet 3d, and the safety webbing can be normally pulled out or rewound.

As shown in fig. 5 and 6, in an emergency (accident), the vehicle sensing component 2 is activated, the vehicle sensing arm 2c of the vehicle sensing component 2 acts on the vehicle sensing ratchet 3d of the linkage device 3 to block and stop the vehicle sensing ratchet 3d, the reel 3b is blocked and stopped, and the cable 3c is blocked and tightened. At this time, under the action of the cable 3c, the driven gear 13F cannot rotate continuously, and at this time, the reel 11 continues to drive the driving gear 13e to rotate (the rotation direction of the driving gear 13e is shown as W direction in fig. 6), the driving gear 13e acts on the driven gear 13F, so that the driven gear 13F has a rotation tendency in the X direction, since the driven gear 13F is locked and does not rotate, the driving gear 13e applies a forcing force F with the same tendency to the driven gear 13F, the force F forces the carrier 13d to swing downwards by the driven gear shaft 13k to overcome the elastic force of the compression spring 13j, the carrier 13d swings downwards to cause the claw 13c to lose the holding force, and the torsion spring 13h forces the claw 13c to rotate downwards to contact with the locking ratchet 13a to lock the locking ratchet 13a, so as to realize the locking of the reel 11.

It should be noted that the structure and locking principle of the car feeling assembly 2 are similar to those in the prior art, that is, the car feeling assembly includes a car feeling seat 2a, a car feeling ball 2b mounted on the car feeling seat 2a, and a car feeling arm 2c, and the car feeling assembly is used for sensing the state of the vehicle, and when the vehicle has an accident, the car feeling assembly is activated and acts on the car feeling ratchet 3d to lock the car feeling ratchet 3 d.

As shown in fig. 11, which is a schematic diagram of the pulley and the vehicle ratchet wheel of the linkage device, according to a further technical scheme, in order to facilitate winding of the cable 3c, the pulley 3b comprises a disc-shaped part 3b1, and a cylindrical part 3b2 for winding the cable 3c is arranged on one surface of the disc-shaped part 3b1 facing the vehicle ratchet wheel 3 d.

More preferably, the cylindrical portion 3b2 has a plurality of insertion blocks 3b3 on the circumference of one end for engaging with the vehicle ratchet 3d, and the vehicle ratchet 3d has a plurality of insertion holes 3d 1. During assembly, the plug block 3b3 is inserted into the jack 3d1, so that the wire wheel 3b and the vehicle sensing ratchet wheel 3d are clamped and fixedly connected into a whole conveniently.

As shown in fig. 3 and 10, in the present invention, the vehicle interior feeling component 2 and the linkage 3 are integrated to facilitate the installation of the linkage 3 and the vehicle interior feeling component 2. Specifically, the housing 3a of the linkage device is provided with a second mounting cavity 3a3, the vehicle sensing component 2 is mounted in the second mounting cavity 3a3, and the second mounting cavity 3a3 is communicated with the first mounting cavity 3a1, so that the vehicle sensing arm 2c of the vehicle sensing component 2 can extend into the first mounting cavity 1a to be matched with the vehicle sensing ratchet wheel. The first mounting cavity 3a1 is closed by a first closing plate 3f, and the second mounting cavity 3a3 is closed by a second closing plate 2 d.

In summary, the split structural type seat belt retractor provided by the invention has the advantages that the vehicle sensing component is separated from the original retractor body, and the vehicle sensing component is connected with the locking mechanism of the original retractor body through the linkage device, so that the seat back can be turned over in a large range, and the normal vehicle sensing function of the seat belt retractor and the protection of a passenger by a seat belt are not influenced.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A split structure type safety belt retractor is characterized by comprising a retractor body and a vehicle sensing component, wherein the retractor body and the vehicle sensing component are in split arrangement; the retractor body is provided with a locking mechanism used for locking the mesh belt when the mesh belt is rapidly drawn out, the locking mechanism is connected with the vehicle sensing assembly through a linkage device, and the linkage device is used for driving the vehicle sensing assembly to be activated to lock the mesh belt.

2. The split structure seatbelt retractor according to claim 1, wherein the retractor body is mounted on a seat back of a vehicle seat, and the vehicle sensing member is mounted on a portion of the vehicle which does not turn inside.

3. The split structure seatbelt retractor according to claim 2, wherein the vehicle sensing member is mounted on a seat cushion of a vehicle seat.

4. The split structure seatbelt retractor according to claim 1, wherein the locking mechanism includes:

5. The split structure type safety belt retractor according to claim 4, wherein the partition plate is provided with a raised bracket limiting pin, the bracket limiting pin and the jaw are located on the same side, and when the jaw is supported by the bracket under the elastic force of the pressure spring, the bracket limiting pin simultaneously abuts against the bracket to limit the bracket.

6. The retractor locking mechanism according to claim 4, wherein the bracket is fan-shaped.

7. The retractor locking mechanism according to claim 4, wherein the pawl includes a mounting end and a locking end, the mounting end and the locking end are connected by a connecting portion, wherein the mounting end is rotatably mounted on the partition plate by the torsion spring, and the locking end is disposed near the locking ratchet.

8. The split structure seatbelt retractor according to claim 7, wherein the connecting portion is provided with an abutting projection extending in a direction of the bracket for abutting against the bracket.

9. The split structure seatbelt retractor according to any one of claims 4 to 8, wherein the linkage means comprises:

the shell is provided with a first installation cavity;

10. The split structure seatbelt retractor according to claim 9, wherein the pulley includes a disk portion provided with a cylindrical portion for winding the traction cable on a surface facing the vehicle sensing ratchet;