CN203157930U - Safety belt retractor - Google Patents
Safety belt retractor Download PDFInfo
- Publication number
- CN203157930U CN203157930U CN 201220612930 CN201220612930U CN203157930U CN 203157930 U CN203157930 U CN 203157930U CN 201220612930 CN201220612930 CN 201220612930 CN 201220612930 U CN201220612930 U CN 201220612930U CN 203157930 U CN203157930 U CN 203157930U
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- CN
- China
- Prior art keywords
- reel
- spool
- collar
- gland
- hole
- 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 - Lifetime
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- Automotive Seat Belt Assembly (AREA)
Abstract
The utility model provides a safety belt retractor. A reel of the safety belt retractor comprises a winding drum, a torsion rod, a reel gland, a reel lantern ring and a connecting piece, wherein the torsion rod is located in a through hole of the winding drum, and comprises a winding part, a rod part, a locking part and a first limiting part; a threaded hole is formed at the end part of the winding part; the locking part is connected with the reel gland in a sleeving manner, and is in rotation stopping connection with the reel gland; the reel gland is compacted at one end of the winding drum by the first limiting part; the reel lantern ring comprises a first lantern ring, a second lantern ring, and a second sleeve hole penetrating through the first lantern ring and the second lantern ring; the second lantern ring is connected in the through hole in a sleeving manner, and is in rotation stopping connection with the winding drum; the winding part is connected in the second sleeve hole in a sleeving manner, and is in rotation stopping connection with the second sleeve hole; the connecting piece comprises a second limiting part, and a threaded joint which penetrates into the second sleeve hole, and is meshed with the threaded hole; and the first lantern ring is compacted at the other end of the winding drum by the second limiting part. According to the safety belt retractor, connection among the components of the reel cannot be loosened, and an injury of a high load to a chest of a passenger can be avoided.
Description
Technical field
The utility model belongs to the safety strap field, relates in particular to a kind of Webbing retractor.
Background technology
The spool of Webbing retractor mainly comprise for the reel of coiling ribbon, be positioned at reel torsion bar, and torsion bar is connected to link on the reel, mode on the reel that torsion bar is connected to normally makes reel, torsion bar, link become as a whole by interference fit at present, and prevents each parts of spool play in the axial direction.But this connection mode slight becoming flexible may occur, along with the accumulation of time after long-time the use, loosening increasing to the influence between each parts, occur obvious play in the axial direction until each parts of spool, and then influence the normal use of safety strap, bring potential safety hazard to the passenger.
Summary of the invention
The utility model provides a kind of torsion bar is connected on the reel reliably for solving the technical matters that each parts of spool produce play easily in the axial direction, prevents that the Webbing retractor of end float misalignment from appearring in each parts of spool.
For achieving the above object, the utility model provides a kind of Webbing retractor, comprises support, spool, wind spring, self-locking device, and described spool comprises reel, torsion bar, spool gland, the spool collar and attaching parts, described reel is used for the ribbon of coiling safety strap, and its inside is provided with through hole; Described torsion bar is positioned at through hole, comprises the coiling portion, bar portion, lock part and first limiting section that are fixedly connected sequentially, and described coiling portion end is provided with tapped bore; Described spool gland is provided with first trepanning, and described lock part is socketed in first trepanning and forms only to revolve with the spool gland and is connected, described first limiting section along drum shaft to the spool gland being pressed on reel one end; Described self-locking device is located between described spool gland and the reel; The spool collar comprises first collar and second collar of captive joint, and second trepanning that runs through first, second collar, and described second collar is socketed in the described through hole and forms only to revolve with reel and is connected; Described coiling portion is socketed in second trepanning and forms only to revolve with the spool collar and is connected; Described attaching parts comprises wind spring connecting portion, second limiting section and the threaded connection that is fixedly connected sequentially; Described threaded connection penetrate described second trepanning and with the screw-threaded engagement of tapped bore, second limiting section along drum shaft to first collar is pressed on the reel other end; The pretension direction of described wind spring is consistent with the threaded connection tightening direction.
Preferably, described first, second limiting section is for being located at the annulus that torsion bar and attaching parts directly make progress respectively.
Preferably, described first, second limiting section is to be located at the discontinuous projection of a circle that torsion bar and attaching parts directly make progress respectively.
Preferably, described lock part and spool gland, described second collar and reel, and described coiling portion and the spool collar are the polyhedral structure that cooperatively interacts.
Preferably, described first collar end is provided be used to the counterbore that holds second limiting section.
Preferably, described spool gland also comprises gland body and outstanding cylinder, and described first trepanning runs through gland body and outstanding cylinder, and described outstanding cylinder can insert in the described through hole and rotate freely.
Preferably, the gap between described outstanding cylinder and the through-hole wall is 0.05-0.2mm.
Preferably, described reel and gland body are provided with locating dowel pin and the knock hole that cooperatively interacts, and locating dowel pin can insert in the knock hole.
The beneficial effects of the utility model are: because torsion bar is pressed on reel one end by first limiting section with the spool gland, attaching parts is screwed onto with torsion bar and by second limiting section spool collar is pressed on the reel other end, connects between each parts of spool so can not occur becoming flexible.When emergency brake, self-locking device locking spool gland, torsion bar, the equal portion of reel are fixed at this moment.Yet because inertia, when the load of ribbon on the passenger reaches certain value, be that ribbon is when reel produces certain moment of torsion, reel drives coiling portion and rotates, and the spool gland makes lock part motionless, make the torsion bar torsional deflection, reel is emitted a small amount of ribbon again like this, in order to avoid big load is to the injury of occupant's chest.
Description of drawings
Fig. 1 is the Webbing retractor schematic perspective view that the utility model provides.
Fig. 2 is the spool exploded drawings that the utility model provides.
Fig. 3 is the utility model spool cutaway view in the vertical.
Mark among the figure:
2-reel, 21-body, 22-first round plate, 23-second round plate, 24-through hole,
3-torsion bar, 31-coiling portion, 311-tapped bore, 32-bar portion, 33-lock part, 34-first limiting section,
The outstanding cylinder of 4-spool gland, 41-gland body, 411-knock hole, 42-, 43-first trepanning, 44-groove,
The 5-spool collar, 51-first collar, 511-counterbore, 52-second collar, 53-second trepanning,
6-attaching parts, 61-wind spring connecting portion, 62-second limiting section, 63-threaded connection,
The 7-support,
The 8-wind spring,
The 9-self-locking device.
The specific embodiment
Clearer for technical matters, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Consult Fig. 1-4, a kind of Webbing retractor comprises support 7, spool, wind spring 8, self-locking device 9, and described spool comprises reel 2, torsion bar 3, spool gland 4, the spool collar 5 and attaching parts 6.Described reel 2 is used for the described ribbon of reeling, and its inside is provided with through hole 24.Described torsion bar 3 is positioned at the through hole 24 of reel 2, comprises the coiling portion 31, bar portion 32, lock part 33 and first limiting section 34 that are fixedly connected sequentially, and described coiling portion 31 ends are provided with tapped bore 311.Described spool gland 4 is provided with first trepanning 43, and described lock part 33 is socketed in first trepanning 43 and forms only to revolve with spool gland 4 and is connected, and described first limiting section 34 axially is pressed on spool gland 4 reel 2 one ends along reel 2; Described self-locking device 9 is located between described spool gland 4 and the support 7.The described spool collar 5 comprises first collar 51 and second collar 52 of captive joint, and second trepanning 53 that runs through first, second collar 52, and described second collar 52 is socketed on to form only to revolve in the through hole 24 of reel 2 and with reel 2 and is connected; Described coiling portion 31 is socketed in second trepanning 53 and forms only to revolve with the spool collar 5 and is connected.Described attaching parts 6 comprises wind spring connecting portion 61, second limiting section 62 and the threaded connection 63 that is fixedly connected sequentially; Described threaded connection 63 penetrate described second trepanning 53 and with the screw-threaded engagement of tapped bore 311, second limiting section 62 axially is pressed on reel 2 other ends with first collar 51 along reel 2; The pretension direction of described wind spring 8 is consistent with threaded connection 63 tightening directions.
Consult Fig. 2, reel 2 comprises body 21 and is positioned at first, second round plate 22,23 at body 21 two ends, and first, second round plate 22,23 external diameter are greater than the external diameter of body 21, and ribbon is wound on the body 21.
The bar portion 32 of torsion bar 3 is positioned at the centre of coiling portion 31 and lock part 33, is used for torsional deflection.
First limiting section 34 can be to be located at annulus (as present embodiment) or the discontinuous projection of a circle that torsion bar 3 footpaths make progress, and first limiting section 34 cooperates to fix to clamp spool gland 4 with the end face of reel 2.
Equally, second limiting section 62 also can be to be located at annulus (as present embodiment) or the discontinuous projection of a circle that attaching parts 6 footpaths make progress, and second limiting section 62 cooperates to fix to clamp the spool collar 5 with the other end of reel 2.
Only revolving between lock part 33 described in the utility model and the spool gland 4 is connected, only revolving between second collar 52 and the reel 2 is connected, and only revolving between coiling portion 31 and the spool collar 5 is connected, refer to non-rotatable linking together between two parts, in the present embodiment, all be to prevent between the two rotation by the polyhedral structure that cooperatively interacts.For example, the lock part 33 of torsion bar 3 is hexahedral column structure, and spool gland 4 first trepannings 43 of Pei Heing are six shape holes with it; Second collar 52 is hexahedral column structure, and reel 2 through holes 24 of Pei Heing are six shape holes with it, and perhaps 24 of through holes are forming six shape holes near second collar, 52 1 ends, and form circular hole at other positions; The coiling portion 31 of torsion bar 3 is hexahedral column structure, and the spool collar 5 second trepannings 53 of Pei Heing are six shape holes with it.Certainly, each face quantity of lock part 33, second collar 52,31 threes' of coiling portion polyhedral structure can be different.
In the present embodiment, spool gland 4 comprises gland body 41, plays outstanding cylinder 42 and first trepanning 43 of guide pillar effect, described outstanding cylinder 42 is located at gland body 41 towards the one side of reel 2, and first trepanning 43 runs through outstanding cylinder 42 and gland body 41.The external diameter of outstanding cylinder 42 makes outstanding cylinder 42 can insert in the through hole 24 of reel 2, and leaves the gap that this interstice coverage is 0.05-0.2mm less than through hole 24 diameters of reel 2.Consult Fig. 2, also be provided with locating dowel pin and the knock hole 411 that cooperatively interacts on first round plate 22 and gland body 41, in the present embodiment, locating dowel pin is located on first round plate 22, and knock hole 411 is located on the gland body 41.42 can roughly navigate on the reel 2 spool gland 4 when Webbing retractor is installed with the design of locating dowel pin, knock hole 411.Certainly, the position of locating dowel pin and knock hole 411 is interchangeable.
Consult Fig. 2, first collar 51 of the spool collar 5 and second collar 52 are integrally formed in the present embodiment.
Described first collar 51 ends are provided be used to the counterbore 511 that holds second limiting section 62.
The wind spring connecting portion 61 of attaching parts 6 is used for being connected with wind spring 8, the predetermincd tension of wind spring 8 is delivered to reel 2 by attaching parts 6, therefore the pretension direction of wind spring 8 should be consistent with threaded connection 63 tightening directions, is in tight condition with the threaded connection 63 of assurance attaching parts 6 and the tapped bore 311 of coiling portion 31 always.
Consult Fig. 3, the following describes the installation process of the utility model Webbing retractor, at first, reel 2 is packed in the support 7, outstanding cylinder 42 with spool gland 4 inserts in the through hole 24 of reel 2 then, locating dowel pin on first round plate 22 inserts in the knock hole 411 of spool gland 4 simultaneously, simultaneously between spool gland 4 and support 7, self-locking device 9 is set, self-locking device 9 can be to be contained in spool gland 4 grooves 44, and when the needs locking, locking spool gland 4 so just roughly has been fixed on spool gland 4 on the reel 2 by the engagement of the tooth on the tooth on it and the support 7.Then, the coiling portion 31 of torsion bar 3 is passed spool gland 4, reel 2 successively, until first limiting section 34 contact spool glands 4 and spool gland 4 is pressed on first round plate 22 of reel 2.At second round plate, 23 places of reel 2, second collar 52 of the spool collar 5 is inserted in the through hole 24 of reel 2, until first collar 51 and second round plate, 23 butts.Make the threaded connection 63 of attaching parts 6 penetrate second trepanning 53 then and screw in the tapped bore 311 of torsion bar 3, until second limiting section 62 the spool collar 5 is pressed on the reel 2.Again on the reel 2 around on ribbon.Install wind spring 8 at attaching parts 6 at last.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (8)
1. a Webbing retractor comprises support (7), spool, wind spring (8), self-locking device (9), it is characterized in that described spool comprises:
Reel (2), for the ribbon of coiling safety strap, its inside is provided with through hole (24);
Torsion bar (3) is positioned at through hole (24), comprises the coiling portion (31), bar portion (32), lock part (33) and first limiting section (34) that are fixedly connected sequentially, and described coiling portion (31) end is provided with tapped bore (311);
Spool gland (4), be provided with first trepanning (43), described lock part (33) is socketed in first trepanning (43) and forms only to revolve with spool gland (4) and is connected, and described first limiting section (34) axially is pressed on spool gland (4) reel (2) one ends along reel (2); Described self-locking device (9) is located between described spool gland (4) and the reel (2);
The spool collar (5), first collar (51) and second collar (52) that comprise captive joint, and second trepanning (53) that runs through first, second collar (52), described second collar (52) is socketed in the described through hole (24) and forms only to revolve with reel (2) and is connected; Described coiling portion (31) is socketed in second trepanning (53) and forms only to revolve with the spool collar (5) and is connected; And
Attaching parts (6) comprises the wind spring connecting portion (61), second limiting section (62) and the threaded connection (63) that are fixedly connected sequentially; Described threaded connection (63) penetrate described second trepanning (53) and with the screw-threaded engagement of tapped bore (311), second limiting section (62) axially is pressed on first collar (51) reel (2) other end along reel (2); The pretension direction of described wind spring (8) is consistent with threaded connection (63) tightening direction.
2. Webbing retractor as claimed in claim 1 is characterized in that: described first, second limiting section (34,62) is for being located at the annulus that torsion bar (3) and attaching parts (6) footpath makes progress respectively.
3. Webbing retractor as claimed in claim 1 is characterized in that: the discontinuous projection of a circle that described first, second limiting section (34,62) makes progress for being located at torsion bar (3) and attaching parts (6) footpath respectively.
4. Webbing retractor as claimed in claim 1, it is characterized in that: described lock part (33) and spool gland (4), described second collar (52) and reel (2), and described coiling portion (31) is the polyhedral structure that cooperatively interacts with the spool collar (5).
5. Webbing retractor as claimed in claim 1, it is characterized in that: described first collar (51) end is provided be used to the counterbore that holds second limiting section (62) (511).
6. Webbing retractor as claimed in claim 1, it is characterized in that: described spool gland (4) also comprises gland body (41) and outstanding cylinder (42), described first trepanning (43) runs through gland body (41) and outstanding cylinder (42), and described outstanding cylinder (42) can insert in the described through hole (24) and rotate freely.
7. Webbing retractor as claimed in claim 6, it is characterized in that: the gap between described outstanding cylinder (42) and through hole (24) inwall is 0.05-0.2mm.
8. Webbing retractor as claimed in claim 6 is characterized in that: described reel (2) is provided with locating dowel pin and the knock hole (411) that cooperatively interacts with gland body (41), and locating dowel pin can insert in the knock hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220612930 CN203157930U (en) | 2012-11-20 | 2012-11-20 | Safety belt retractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220612930 CN203157930U (en) | 2012-11-20 | 2012-11-20 | Safety belt retractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203157930U true CN203157930U (en) | 2013-08-28 |
Family
ID=49019139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220612930 Expired - Lifetime CN203157930U (en) | 2012-11-20 | 2012-11-20 | Safety belt retractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203157930U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104742855A (en) * | 2013-12-30 | 2015-07-01 | 常州博万达汽车安全设备有限公司 | Safety belt connection device |
| CN105691349A (en) * | 2014-11-26 | 2016-06-22 | 比亚迪股份有限公司 | Safety belt winding device, safety belt device and vehicle |
| CN105691348A (en) * | 2014-11-26 | 2016-06-22 | 比亚迪汽车工业有限公司 | Safety belt winding device, safety belt device and vehicle |
-
2012
- 2012-11-20 CN CN 201220612930 patent/CN203157930U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104742855A (en) * | 2013-12-30 | 2015-07-01 | 常州博万达汽车安全设备有限公司 | Safety belt connection device |
| CN105691349A (en) * | 2014-11-26 | 2016-06-22 | 比亚迪股份有限公司 | Safety belt winding device, safety belt device and vehicle |
| CN105691348A (en) * | 2014-11-26 | 2016-06-22 | 比亚迪汽车工业有限公司 | Safety belt winding device, safety belt device and vehicle |
| CN105691348B (en) * | 2014-11-26 | 2019-04-05 | 比亚迪汽车工业有限公司 | Safety belt Webbing take-up device, seat belt apparatus and vehicle |
| CN105691349B (en) * | 2014-11-26 | 2019-06-25 | 比亚迪股份有限公司 | Safety belt Webbing take-up device, seat belt apparatus and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130828 |
|
| CX01 | Expiry of patent term |