CN200957798Y - Rotary pre-tightener of safety belt for car - Google Patents
Rotary pre-tightener of safety belt for car Download PDFInfo
- Publication number
- CN200957798Y CN200957798Y CN 200620108547 CN200620108547U CN200957798Y CN 200957798 Y CN200957798 Y CN 200957798Y CN 200620108547 CN200620108547 CN 200620108547 CN 200620108547 U CN200620108547 U CN 200620108547U CN 200957798 Y CN200957798 Y CN 200957798Y
- Authority
- CN
- China
- Prior art keywords
- base
- piston
- clutch
- pedestal
- drive wheel
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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- Automotive Seat Belt Assembly (AREA)
Abstract
The utility model discloses a rotary retightener of seat belt of automobile. The pedestal is provided with a driving wheel which is fixed with two registration masts. The inner wall of the driving wheel is provided with two strips of clutch groove which is provided with a clutch disc whose one end is provided with a protruding pole that matches the glide groove and whose other end is provided with a pinhole that matches the orifice in the cover board and is fixed with pegs. The cylinder is provided with a piston which is provided with a pulley which is fixed by a straight pin, the cylinder body matches and is connected with the screws of the pedestal. One end of the driving rope winds and is fixed in the groove which is positioned outside the driving wheel and the other end crosses the pedestal and the piston and then crosses the pulley with U shape and returns back to the pedestal. The ratchet wheel is linked with the end of a taking up spool and coordinates to install a gas generator in the center of the driving wheel in the through opening of the pedestal. The utility model can fasten the seat belt to reduce injuries of human body to the lowest possible degree when the automobile are collided or turned over.
Description
One, technical field
The utility model relates to a kind of car belt tightening device, refers in particular to a kind of automobile safety belt rotary pretensioner.
Two, background technology
At present, all be fitted with seat belt device on the automobile, no matter be that chaufeur or passenger wear Safety Belt, luxury car also is fitted with safe gas and assists.Everything all is the life security for the people.But, existing safety strap, its tightness is by people's self-regulated.Tension is uncomfortable, though it is more comfortable to cross pine, vehicle is subjected to than strong collision or when tumbling, because safety strap is loose excessively, head, chest and pelvis displacement forward are excessive, come to harm in collision easily, do not play the safety precaution effect.
Three, utility model content
The purpose of this utility model is to provide a kind of automobile safety belt rotary pretensioner, and when vehicle was subjected to than strong collision or tumbles, it can tighten up safety strap, reduces the injury of human body in collision most possibly.
For achieving the above object, the solution that the utility model is taked is: a kind of automobile safety belt rotary pretensioner, one drive wheel is arranged in the base, with two registration mast location, the drive wheel inwall has two clutch slot, dress clutch-plate in the clutch slot, clutch-plate one end has a projection that matches with chute in the base, the other end have one with cover plate in the aperture that is complementary of aperture, and locate with locating pin, adorn piston in the cylinder body, internal piston is joined a pulley, fixes with straight pin, and cylinder body and whorl of base are connected, driving Suo Yiduan also fixes in the exterior groove of drive wheel, the other end is fixed in base with the U shape by pulley and wraparound after passing base and piston, ratchet is combined closely with the end of take-up spool, and is engaged in the middle of the drive wheel, and a gas generator is housed in the through hole of base.
During use, safety strap ties up on the take-up spool and (has take-up spool in the existing seat belt apparatus and install safety strap), and gas generator assists middle crash sensor or other crash sensor to be connected with safe gas.When vehicle is subjected to than strong collision or tumbles, after crash sensor receives collision alarm, automobile safety belt rotary pretensioner is activated, make the take-up spool of automobile safety belt rotary pretensioner tighten up the direction rotation along safety strap, promptly, play the effect of tightening up with safety strap backrush certain displacement.This pretension can reduce loose and head, chest and the pelvis displacement forward of safety strap so that safety strap participates in absorbing collision energy as early as possible, reduces the injury of human body in collision most possibly.
Four, description of drawings
Fig. 1 is the automobile safety belt rotary pretensioner exploded view.
Fig. 2 is the block diagram of base.
Fig. 3 is the automobile safety belt rotary pretensioner fragmentary cross-sectional view.
Fig. 4 is that drive wheel cooperates figure with ratchet and clutch-plate.
Among the figure: 1, locating pin, 2, aperture, 3, cover plate, 4, clutch-plate, 5, drive rope, 6, clutch slot, 7, drive wheel, 8, base, 9, chute, 10, registration mast, 11, ratchet, 12, take-up spool, 13, cylinder body, 14, pulley, 15, seal ring, 16, straight pin, 17, groove, 18, piston, 20, through hole, 21, gas generator.
Five, the specific embodiment
Below in conjunction with embodiment and accompanying drawing thereof the utility model is remake description.
Referring to Fig. 1, Fig. 3 and Fig. 4, a kind of automobile safety belt rotary pretensioner, one drive wheel 7 is arranged in the base 8, with two registration masts, 10 location, drive wheel 7 inwalls have two clutch slot 6, dress clutch-plate 4 in the clutch slot 6, clutch-plate 4 one ends have a projection that matches with chute in the base 8, the other end have one with cover plate 3 in the aperture that is complementary of aperture 2, and with locating pin 1 location, dress piston 18 in the cylinder body 13, a pulley 14 is joined in piston 18 inside, and fixing with straight pin 16, cylinder body 13 is connected with base 8 screws thread fit, driving rope 5 one ends also fixes in drive wheel 7 exterior grooves, the other end passes base 8 and piston 18 backs are fixed in base 8 with the U shape by pulley 14 and wraparound, ratchet 11 is combined closely with the end of take-up spool 12, and is engaged in the middle of the drive wheel 7, and a gas generator 21 is housed in the through hole 20 of base 8.When vehicle is subjected to than strong collision or tumbles, after crash sensor receives collision alarm, indication gas generator 21 produces air pressure, promote piston 18 and do straight-line motion, piston 18 pullings drive rope 5, drive drive wheel 7 rotations, cutting off in cover plate 3 and the base 8 locating pin 1 during drive wheel 7 rotation drives clutch-plate 4 and shifts out along clutch slot 6, make clutch-plate 4 with ratchet 11 engagements, drive take-up spool 12 rotations, thereby tighten up safety strap.
Referring to Fig. 1, adorn a seal ring 15 in the groove 17 outside the piston 18, to realize that piston 18 is with cylinder body 13 inner close fit.
Referring to Fig. 1 and Fig. 2, be shaped on two boss in the base 8, correspondingly in cover plate 3, be shaped on two circular holes that match with two boss.
Claims (3)
1, a kind of automobile safety belt rotary pretensioner, it is characterized in that: a drive wheel (7) is arranged in the base (8), locate with two registration masts (10), drive wheel (7) inwall has two clutch slot (6), dress clutch-plate (4) in the clutch slot (6), clutch-plate (4) one ends have a projection that matches with chute in the base (8), the other end have one with cover plate (3) in the aperture that is complementary of aperture (2), and locate with locating pin (1), dress piston (18) in the cylinder body (13), a pulley (14) is joined in piston (18) inside, fixing with straight pin (16), cylinder body (13) is connected with base (8) screw thread fit, driving rope (5) one ends also fixes in the exterior groove of drive wheel (7), the other end passes base (8) and piston (18) back is fixed in base (8) with the U shape by pulley (14) and wraparound, combine closely in the end of the same take-up spool of ratchet (11) (12), and be engaged in the middle of the drive wheel (7), in the through hole (20) of base (8) gas generator (21) is housed.
2, automobile safety belt rotary pretensioner according to claim 1 is characterized in that: adorn a seal ring (15) in the groove (17) outside the described piston (18).
3, automobile safety belt rotary pretensioner according to claim 1 is characterized in that: be shaped on two boss in the described base (8), correspondingly be shaped on two circular holes that match with two boss in cover plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620108547 CN200957798Y (en) | 2006-10-02 | 2006-10-02 | Rotary pre-tightener of safety belt for car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620108547 CN200957798Y (en) | 2006-10-02 | 2006-10-02 | Rotary pre-tightener of safety belt for car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200957798Y true CN200957798Y (en) | 2007-10-10 |
Family
ID=38784671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620108547 Expired - Fee Related CN200957798Y (en) | 2006-10-02 | 2006-10-02 | Rotary pre-tightener of safety belt for car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200957798Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102336174A (en) * | 2010-07-14 | 2012-02-01 | 株式会社东海理化电机制作所 | Pretensioner mechanism |
| CN101980896B (en) * | 2008-03-31 | 2012-11-21 | 芦森工业株式会社 | Seatbelt retractor |
-
2006
- 2006-10-02 CN CN 200620108547 patent/CN200957798Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101980896B (en) * | 2008-03-31 | 2012-11-21 | 芦森工业株式会社 | Seatbelt retractor |
| CN102336174A (en) * | 2010-07-14 | 2012-02-01 | 株式会社东海理化电机制作所 | Pretensioner mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |