CN100503318C - Prefastening clutch mechanism of prefastening safety belt for automobile - Google Patents
Prefastening clutch mechanism of prefastening safety belt for automobile Download PDFInfo
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- CN100503318C CN100503318C CNB2007100308065A CN200710030806A CN100503318C CN 100503318 C CN100503318 C CN 100503318C CN B2007100308065 A CNB2007100308065 A CN B2007100308065A CN 200710030806 A CN200710030806 A CN 200710030806A CN 100503318 C CN100503318 C CN 100503318C
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- prefastening
- preloader
- clutch block
- retractor spool
- clutch
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Abstract
The invention relates to a preload clutch mechanism of vehicle preload safety belt, comprising a preloader, a retractor and a plurality of clutch blocks, wherein the clutch blocks are positioned between the intra-cavity of the driving wheel of the preloader and the retractor reel; the number of the clutch blocks is two or more, which are symmetrically distributed around the periphery of the retractor reel; when the preloader is not in action, the clutch blocks are detached with the retractor reel; when the preloader is in action, the clutch blocks are surface-contacted and connected with the driving wheel intra-cavity and the retractor reel. In the technical proposal of the invention, the clutch blocks are clamp with the intra-cavity sidewall of the driving wheel and the retractor reel, and the contact mode is surface contact, but not line contact, thereby, the invention extends the forced area, enables to transfer more momentum, and the elastic extrudability of the clutch blocks is zero. The invention has the advantages of more reliable transmission, novel structure, rational design, and safe and reliable use.
Description
Technical field:
The present invention relates to a kind of prefastening safety belt for automobile, particularly relate to a kind of prefastening clutch mechanism of prefastening safety belt for automobile.
Background technology:
Along with the raising of living standards of the people and the extension of express highway, automobile is as a kind of high speed vehicle easily, oneself enters China family in a large number, people require also more and more higher to the safety strap of one of the important safety of automobile configuration, therefore, belt with pre-load device also arises at the historic moment, belt with pre-load device not only safety performance apparently higher than common safety strap, and can and safety air bag be used, feasible belt with pre-load device technical development in recent years is rapid.
Need carry out in the parts of transmission of power at some, particularly when two coaxial line parts carry out transmission of power, need a kind of simple engaging and disengaging gear, can when the needs transferring power, engage master and slave moving part and power be passed to driven member by driving link, again can be when not needing transmission of power driving link do not influence the work of driven member.In prefastening safety belt for automobile, the transmission between preloader and the taking-up device rotating shaft just needs above-mentioned engaging and disengaging gear.Twining belt-strap on the automobile safety belt retractor spool, ribbon can be pulled out when automobile passenger is worn, and can be regained by taking-up device when the occupant removes, and retractor spool can two-wayly be rotated during therefore common mode of operation.Preloader is enabled when automobile bumps, and it produces power by propulsion source, by the transmission device transferring power, by engaging and disengaging gear power is passed to retractor spool spool is rotated ribbon toward the direction of tightening up.Therefore, the work relationship between preloader and the retractor spool is, retractor spool can two-way rotation when preloader was not worked, and promptly preloader is not interfered the running of spool; During preloader work, then must be able to drive the unidirectional rotation of retractor spool.
In a kind of prefastening car belt of prior art, as shown in Figure 1, adopt engaging and disengaging gear to combine between preloader and the retractor spool 4 and carry out transmission, this engaging and disengaging gear comprises preloader power wheel 1, cylindrical roller 2, retractor spool 4 three parts.The inner chamber 3 of the power wheel 1 of preloader is the die cavity that is made of three centrosymmetric arcwall faces, and retractor spool 4 one ends stretch into and are divided into three independent chambeies in the die cavity, and 2 of cylindrical rollers are separately fixed at maximum interspace place in these three independent chambeies.When preloader was worked, power wheel 1 rotation of preloader was clamped in cylindrical roller 2 extruding between spool 4 and the preloader power wheel 1, and 1 of the power wheel of preloader can drive spool 4 rotations.This engaging and disengaging gear is simple, but has following shortcoming: (1) cylindrical roller 2 all is line with preloader power wheel and spool 4 and contacts, and the power that transmits between the power wheel of preloader and spool 4 is restricted.(2) owing to be the line contact, when the imput power on the power wheel of preloader was excessive, cylindrical roller 2 might eject from clamped position, thereby caused transmission failure.
The utility model content:
The objective of the invention is to overcome the deficiencies in the prior art, a kind of prefastening clutch mechanism of prefastening safety belt for automobile is provided; This prefastening clutch mechanism can make the power wheel of preloader and the contact surface of retractor spool and clutch block increase, and engages reliably, can transmit bigger power.
The object of the present invention is achieved like this: a kind of prefastening clutch mechanism of prefastening safety belt for automobile, comprise the inner chamber 3 of the power wheel 1 that places preloader 11 and the clutch block 5 between the retractor spool 4, described clutch block 5 is more than two or two and is symmetrically distributed in retractor spool 4 peripheries, when preloader 11 did not move, clutch block 5 was separated with retractor spool 4; When preloader 11 actions, clutch block 5 is connected for the face contact with retractor spool 4 with the inner chamber 3 of power wheel 1.
Described clutch block 5 is two, curved structure, the interior contact surface 6 of clutch block 5 is the arc surface that is complementary with retractor spool 4, the cambered surface that the outer contacting face 7 of clutch block 5 is complementary for the intracavity sidewall 8 with power wheel 1, described outer contacting face A end 9 to the distance of retractor spool 4 shaft core lines is held 10 distances to retractor spool 4 shaft core lines greater than outer contacting face B.
The interior contact surface 6 of described clutch block 5 and/or outer contacting face 7 are for helping strengthening the rough surface of friction force, and described rough surface can be the serration shape or grinds flower-shaped surface.
Described retractor spool 4 is the rough surface that helps strengthening friction force with clutch block 5 contacted contact surface surfaces, and described rough surface can be the serration shape or grinds flower-shaped surface.
The intracavity sidewall 8 of described power wheel 1 is for helping strengthening the rough surface of friction force, and described rough surface can be the serration shape or grinds flower-shaped surface.
Principle of work of the present invention is as follows:
When preloader 11 actions, the power wheel rotation of preloader 11, the intracavity sidewall 8 of power wheel 1 contacts with the outer contacting face 7 of clutch block 5, because outer contacting face A holds inner chamber 3 sidewalls 8 to the distance of retractor spool 4 shaft core lines of 9 pairing power wheels 1 to hold the distance of the intracavity sidewall 8 of 10 pairing power wheels 1 to retractor spool 4 shaft core lines greater than outer contacting face B, force clutch block 5 radially near retractor spool 4, last clutch block 5 is clamped between the inner chamber 3 of retractor spool 4 and preloader 11 power wheels 1 by the internal and external cambered surface extruding, and the power wheel of retractor spool 4 and preloader 11 is rotated synchronously.
The invention has the beneficial effects as follows: owing to use technical solutions according to the invention, clutch block 5 particularly of the present invention clamps by the intracavity sidewall 8 and the retractor spool 4 of cambered surface and power wheel 1, the way of contact is that face contacts but not the line contact, area of thrust surface have been increased, it is more reliable to transmit bigger power and transmission, and elasticity can not take place clutch block 5 extrudes, and the present invention has novel structure, reasonable in design, the safe and reliable beneficial effect that waits.
Description of drawings:
The invention will be further described below in conjunction with drawings and Examples:
Fig. 1 be prior art the engaging and disengaging gear scheme drawing;
Fig. 2 is an embodiment of the invention structural representation;
Fig. 3 is one of embodiment of the invention fundamental diagram;
Fig. 4 is two of an embodiment of the invention fundamental diagram;
Fig. 5 is the structural representation of embodiment of the invention power wheel
Fig. 6 is the structural representation of embodiment of the invention clutch block
Fig. 7 is one of embodiment of the invention application example scheme drawing;
Fig. 8 is two of an embodiment of the invention application example scheme drawing;
Among the figure: 1, power wheel; 2, cylindrical roller; 3, inner chamber; 4, retractor spool; 5, clutch block; 6, interior contact surface; 7, outer contacting face; 8, intracavity sidewall; 9, outer contacting face A end; 10, outer contacting face B end; 11, preloader; 12, pin-and-hole;
The specific embodiment:
Embodiment: with reference to Fig. 2 to Fig. 4, in embodiments of the present invention, extremely shown in Figure 4 as Fig. 2, the prefastening clutch mechanism of described prefastening safety belt for automobile, comprise the inner chamber 3 of the power wheel 1 that places preloader 11 and two clutch blocks 5 between the retractor spool 4, described clutch block 5 is symmetrically distributed in retractor spool 4 peripheries, during installation, the termination of retractor spool 4 is stretched in the inner chamber 3 of power wheel 1 of preloader 11, clutch block 5 symmetry respectively is installed in the inner chamber 3 of power wheel 1, and the contact surface that interior contact surface 6 in back and retractor spool 4 are installed is free-running fit.As shown in Figure 3, when preloader 11 did not move, clutch block 5 was separated with retractor spool 4; As shown in Figure 4, when preloader 11 actions, clutch block 5 contacts stressed joint with retractor spool 4 for face with the inner chamber 3 of power wheel 1.
Extremely shown in Figure 4 as Fig. 2, described clutch block 5 is two, curved structure, the interior contact surface 6 of clutch block 5 is the arc surface that is complementary with retractor spool 4, the cambered surface that the outer contacting face 7 of clutch block 5 is complementary for the intracavity sidewall 8 with power wheel 1, described outer contacting face A end 9 to the distance of retractor spool 4 shaft core lines is held 10 distances to retractor spool 4 shaft core lines greater than outer contacting face B.
Fig. 5 is the structural representation of embodiment of the invention power wheel 1, and Fig. 6 is the structural representation of embodiment of the invention clutch block 5; As shown in Figure 6, have and be arranged on bearing pin easy to break on the housing of the preloader 11 bonded assembly pin-and-hole 12 that is complementary on the clutch block 5, when guaranteeing that preloader 11 does not move, clutch block 5 is separated with retractor spool 4; The interior contact surface 6 and/or the outer contacting face 7 of described clutch block 5 can be the rough surface that helps strengthening friction force, and described rough surface can be the flower-shaped surface of mill; Described retractor spool 4 is the rough surface that helps strengthening friction force with clutch block 5 contacted contact surface surfaces, and described rough surface can be the serration shape or grinds flower-shaped surface; The intracavity sidewall 8 of described power wheel 1 is for helping strengthening the rough surface of friction force, and described rough surface can be the serration shape or grinds flower-shaped surface.
Fig. 7, Fig. 8 are the application examples that the embodiment of the invention is applied to the pinion and-rack pretightening automobile seat belt winder, among Fig. 7, Fig. 8, power wheel is a transmission gear, clutch block 5 symmetry respectively is installed in the inner chamber 3 of power wheel 1, Fig. 7 is that preloader 11 is not when moving, the scheme drawing that clutch block 5 and retractor spool 4 are separated, when Fig. 8 was preloader 11 actions, the inner chamber 3 of clutch block 5 and power wheel 1 and retractor spool 4 contacted the scheme drawing of stressed joint for face.
The use of the embodiment of the invention is as follows:
Extremely shown in Figure 4 as Fig. 2, in embodiments of the present invention, two clutch blocks 5 are symmetrically distributed between the inner chamber 3 and retractor spool 4 of power wheel 1 of preloader 11, among Fig. 4, when preloader 11 actions, the power wheel of preloader 11 towards A to rotation, since inner chamber 3 sidewalls 8 of outer contacting face A end 9 and corresponding power wheel 1 to the distance of retractor spool 4 shaft core lines greater than the intracavity sidewall 8 of outer contacting face B end 10 and corresponding power wheel 1 distance to retractor spool 4 shaft core lines, clutch block 5 outer contacting faces 7 make clutch block 5 radially near retractor spool 4 under intracavity sidewall 8 extruding of preloader 11 power wheels 1; When preloader 11 power wheels 1 turn over certain angle, contact surfaces 6 contact and clamp with the contact surface of retractor spool 4 fully in the clutch block 5.After clamping process was finished, transmission of power was finished in 4 rotations synchronously with it under the drive of preloader 11 power wheels 1 of retractor spool.Because clutch block 5 contacts with 4 of retractor spool with the inner chamber 3 of power wheel 1 by inside/outside contact surface 7, area of contact is big, therefore clutch block 5 clamped after, can under intracavity sidewall 8 extruding of power wheel 1 elasticity not take place extrudes, engage very reliably, can avoid because the transmission failure that the disengaging of clutch block 5 causes.Simultaneously, because clutch block 5 contacts with the face of preloader 11 transmission gears and retractor spool 4, increased area of thrust surface, can avoid clutch block 5 owing to stressed excessive deforming, thereby can transmit bigger power, transmission is more reliable.
The present invention includes but be not limited to the described embodiment of the foregoing description, also can design other embodiments in conjunction with concrete applicable cases according to technical solutions according to the invention.
Claims (5)
1. the prefastening clutch mechanism of a prefastening safety belt for automobile, comprise the inner chamber (3) of the power wheel (1) that places preloader (11) and the clutch block (5) between the retractor spool (4), it is characterized in that: described clutch block (5) is more than two or two and is symmetrically distributed in retractor spool (4) periphery, when preloader (11) when not moving, clutch block (5) is separated with retractor spool (4); When preloader (11) moved, clutch block (5) was connected for the face contact with retractor spool (4) with the intracavity sidewall (8) of power wheel (1).
2. the prefastening clutch mechanism of a kind of prefastening safety belt for automobile according to claim 1, it is characterized in that: described clutch block (5) is two, curved structure, the interior contact surface (6) of clutch block (5) is the arc surface that is complementary with retractor spool (4), the cambered surface of the outer contacting face (7) of clutch block (5) for being complementary with the intracavity sidewall (8) of power wheel (1), outer contacting face (7) along an end of the length direction of arcuate structure be outer contacting face A end (9) to the distance of retractor spool (4) shaft core line be outer contacting face B end (10) distance greater than outer contacting face (7) along the other end of arcuate structure length direction to retractor spool (4) shaft core line.
3, the prefastening clutch mechanism of a kind of prefastening safety belt for automobile according to claim 2, it is characterized in that: the interior contact surface (6) of described clutch block (5) and/or outer contacting face (7) are for helping strengthening the rough surface of friction force, and described rough surface is the serration shape or grinds flower-shaped surface.
4, the prefastening clutch mechanism of a kind of prefastening safety belt for automobile according to claim 2, it is characterized in that: described retractor spool (4) is the rough surface that helps strengthening friction force with the contacted contact surface of clutch block (5) surface, and described rough surface is the serration shape or grinds flower-shaped surface.
5, the prefastening clutch mechanism of a kind of prefastening safety belt for automobile according to claim 2, it is characterized in that: the intracavity sidewall (8) of described power wheel (1) is for helping strengthening the rough surface of friction force, and described rough surface is the serration shape or grinds flower-shaped surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100308065A CN100503318C (en) | 2007-10-12 | 2007-10-12 | Prefastening clutch mechanism of prefastening safety belt for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100308065A CN100503318C (en) | 2007-10-12 | 2007-10-12 | Prefastening clutch mechanism of prefastening safety belt for automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101177136A CN101177136A (en) | 2008-05-14 |
| CN100503318C true CN100503318C (en) | 2009-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100308065A Active CN100503318C (en) | 2007-10-12 | 2007-10-12 | Prefastening clutch mechanism of prefastening safety belt for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100503318C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102079288B (en) * | 2009-11-27 | 2012-12-12 | 比亚迪股份有限公司 | Clutch mechanism of safe belt preloader |
| CN102294988B (en) * | 2011-06-10 | 2013-04-24 | 广东大豪汽车零部件实业有限公司 | Automotive seat belt retractor with emergency system |
| CN102303580B (en) * | 2011-06-28 | 2013-07-10 | 常州博万达汽车安全设备有限公司 | Pre-tensioner used for safety seat belt |
| CN104742853B (en) * | 2015-03-25 | 2017-04-26 | 延锋百利得（上海）汽车安全***有限公司 | Clutch for automobile safety belt |
| DE102016122088A1 (en) * | 2016-11-17 | 2018-05-17 | Trw Automotive Gmbh | belt reel |
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2007
- 2007-10-12 CN CNB2007100308065A patent/CN100503318C/en active Active
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| Publication number | Publication date |
|---|---|
| CN101177136A (en) | 2008-05-14 |
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Owner name: GUANGDONG DAHAO VEHICLE ACCESSORY INDUSTRY + COMME Free format text: FORMER OWNER: SHENZHEN DAHAO PARTS OF AUTOMOBILE CO., LTD., SOUTH CHINA UNIVERSITY OF TECHNOLO Effective date: 20110729 |
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| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518111 SHENZHEN, GUANGDONG PROVINCE TO: 515000 SHANTOU, GUANGDONG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20110729 Address after: 4-5, 515000 floor, No. 2, 3rd Street, Zhujiang Road, 30 block, Longhu District, Guangdong, Shantou Co-patentee after: SOUTH CHINA University OF TECHNOLOGY Patentee after: GUANGDONG DAHAO VEHICLE ACCESSORY INDUSTRY & COMMERCE Co.,Ltd. Address before: Pinghu street Longgang District of Shenzhen City, Guangdong Province on the 518111 ancient community Bora Industrial Zone No. 70 New River road building second Co-patentee before: South China University of Technology Patentee before: Shenzhen DAHAO Auto Parts Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |
Address after: 515000 one of plant a, No. 101, Zhuhe Road, Haojiang District, Shantou City, Guangdong Province Patentee after: GUANGDONG DAHAO VEHICLE ACCESSORY INDUSTRY & COMMERCE Co.,Ltd. Patentee after: SOUTH CHINA University OF TECHNOLOGY Address before: Floor 4-5, No. 2, Zhuye 3rd Street, Block 30, Longhu District, Shantou City, Guangdong Province, 515000 Patentee before: GUANGDONG DAHAO VEHICLE ACCESSORY INDUSTRY & COMMERCE Co.,Ltd. Patentee before: SOUTH CHINA University OF TECHNOLOGY |
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| CP02 | Change in the address of a patent holder |