CN113561930B

CN113561930B - Split structural safety belt retractor

Info

Publication number: CN113561930B
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: 2022-10-11
Anticipated expiration: 2041-09-01
Also published as: CN113561930A

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 structure type 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.

Among the prior art, the mode that subassembly and coiler body were felt to the car adopted integrative setting, for example china patent (publication number is CN 111674354A) just discloses a subassembly and coiler are felt to the car, and wherein the subassembly is felt to the car includes: the car feel support, the car feel ball and the car feel arm; the automobile feel support is arranged on a mounting substrate of the retractor body, the automobile feel arm comprises a clamping end, a connecting part and a covering end, the covering end is buckled on an opening of the automobile feel support so as to limit an automobile feel ball in the automobile feel support, the connecting part is movably connected to the edge of the opening of the automobile feel 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-row middle seat, since the rear-row 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 structure type safety belt retractor which comprises a retractor body and a vehicle sensing component, wherein the retractor body and the vehicle sensing component are arranged in a split mode; 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 shaft to with the driving gear meshing, driven gear is located the driving gear and keeps away from the one side of carrier shaft, 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 mounting end and joint end, and mounting end and joint end link to each other through connecting portion, and wherein the mounting 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 then installed in the car on for example cushion class can not overturn 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 type 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 cooperating 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 cooperation of the pulley of the linkage and 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-a separator; 13b2 — a first space; 13b 3-a second space;

13c 1-a mounting end; 13c 2-a clamping end; 13c 3-linker; 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-a first mounting cavity; 3a 2-line axis; 3a 3-second mounting cavity

3b 1-a disk-like portion; 3b 2-barrel section; 3b 3-an insert;

3d 1-jack.

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 an accident occurs in the vehicle, the vehicle sensing component 2 is activated, and the linkage 3 acts on the locking mechanism 13 to enable the locking mechanism 3 to lock 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, which is a schematic structural diagram of a car seat, during installation, the retractor body 1 is installed on a seat back of the seat, and the car sensation assembly is installed on the seat cushion, so that the car sensation assembly 2 is not affected by the angle of adjustment of the seat back and is activated, 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 13f. 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 wheel 13a;

the claw 13c is rotatably mounted on the partition plate 13b1 of the lock cover 13b through a torsion spring 13h and is positioned in the second space of the lock cover 13b, and the claw 13c is used for being matched with the locking ratchet wheel 13a to lock the reel 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 far away from the claw 13c is abutted against the side wall of the lock cover 13b through a pressure spring 13j, and under the action of the elastic force of the pressure spring 13j, the bracket 13d exerts an 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 13a;

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;

the driven gear 13f (see fig. 5) is rotatably mounted on the bracket 13d through a driven gear shaft 13k (see fig. 6) and meshed with the driving gear 13e, the driven gear 13f is located on one 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 through the driven gear mounting position 13d1 by a pressing plate 13l, the driven gear 13f normally rotates under a normal state, and the driven gear 13 is locked and does not rotate under the action of the linkage 3 under 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 reel 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 lock the spool 11 in an emergency situation, but also adopts an arrangement mode of circular arc swing, so that the locking mechanism 13 is compact in overall structure and facilitates the overall arrangement of the retractor.

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 jaw 13c is supported by the bracket 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 keep 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 through a connecting portion 13c3, wherein the mounting end 13c1 is rotatably mounted on a partition plate 13b1 of the lock cover through a torsion spring 13h, and the clamping end 13c2 is disposed close to the locking ratchet 13 a. In order to facilitate the claw 13c to contact the bracket 13d, the connecting portion 13c3 is provided with an abutting projection 13c4, and the abutting projection 13c4 extends toward the bracket 13d for contacting 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, in which 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 includes: shell 3a, line wheel subassembly and cable 3c. Wherein,

the shell 3a is provided with a first mounting cavity 3a1;

the wire wheel assembly is arranged in the first mounting cavity 3a1 and comprises a vehicle sensing ratchet wheel 3d and a wire wheel 3b which are clamped into a whole, the vehicle sensing ratchet wheel 3d and the wire wheel 3b are rotatably arranged in the first mounting cavity 3a1 through a wire wheel shaft 3a2, the vehicle sensing ratchet wheel 3d is used for being matched with the vehicle sensing assembly 2, and the wire wheel 3b is connected with the wire wheel shaft 3a2 through a coil spring 3e so that the wire wheel 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, but the spool 11 continues to drive the driving gear 13e to rotate (the rotation direction of the driving gear 13e is as shown in W direction in fig. 6), the driving gear 13e acts on the driven gear 13F to make the driven gear 13F have the rotation tendency in the X direction, because 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 through the driven gear shaft 13k to overcome the elastic force of the compression spring 13j, the carrier 13d swings downwards to make the claw 13c 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 lock the spool 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 3d.

As shown in fig. 11, which is a schematic view of the pulley and the feel ratchet wheel of the linkage, according to a further technical solution, in order to facilitate winding of the cable 3c, the pulley 3b includes a disk-shaped portion 3b1, and a cylindrical portion 3b2 for winding the cable 3c is provided on a surface of the disk-shaped portion 3b1 facing the feel ratchet wheel 3d.

More preferably, the cylindrical portion 3b2 has a plurality of insertion blocks 3b3 on the circumference of one end for engaging with the ratchet 3d, and the ratchet 3d has a plurality of corresponding insertion holes 3d1. During the assembly, the plug 3b3 inserts in the jack 3d1 to convenient link firmly wheel 3b and car feel ratchet 3d joint as an organic whole.

As shown in fig. 3 and 10, in the present invention, the vehicle body feeling module 2 and the link 3 are integrated to facilitate the attachment of the link 3 and the vehicle body feeling module 2. Specifically, a second mounting cavity 3a3 is formed in a shell 3a of the linkage device, 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 a 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 sealed by a first sealing plate 3f, and the second mounting cavity 3a3 is sealed by a second sealing 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 a mesh belt when the mesh belt is rapidly drawn out, the locking mechanism is connected with the vehicle sensing component through a linkage device, and the linkage device is used for driving the locking mechanism to lock the mesh belt when the vehicle sensing component is activated;

the locking mechanism includes:

the driven gear is rotatably arranged on the bracket through a driven gear shaft and is meshed with the driving gear, the driven gear is positioned on one side of the driving gear, which is far away from the bracket shaft, and normally rotates and is blocked in emergency;

the linkage includes:

the shell is provided with a first installation cavity;

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 type safety belt retractor according to claim 1, 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.

5. The split structure seatbelt retractor according to claim 1, wherein the bracket is formed in a fan shape.

6. The split structure type safety belt retractor according to claim 1, wherein the pawl comprises a mounting end and a clamping end, the mounting end and the clamping end are connected through a connecting portion, the mounting end is rotatably mounted on the partition plate through the torsion spring, and the clamping end is arranged close to the locking ratchet wheel.

7. The seatbelt retractor according to claim 6, wherein the connecting portion is provided with an abutting protrusion extending in a direction of the bracket for abutting against the bracket.

8. The split structure seatbelt retractor according to claim 7, 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;

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 equipped with a plurality of jacks that correspond, the inserted block inserts in the jack to make the line wheel and the two joint of car feel ratchet as an organic whole.