CN104742856A - Safety belt winder - Google Patents
Safety belt winder Download PDFInfo
- Publication number
- CN104742856A CN104742856A CN201310739374.0A CN201310739374A CN104742856A CN 104742856 A CN104742856 A CN 104742856A CN 201310739374 A CN201310739374 A CN 201310739374A CN 104742856 A CN104742856 A CN 104742856A
- Authority
- CN
- China
- Prior art keywords
- mandrel
- force
- limit rod
- parallel plate
- lock plate
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/34—Belt retractors, e.g. reels
- B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/34—Belt retractors, e.g. reels
Abstract
The invention relates to a safety belt winder. The safety belt winder comprises a frame, a locking disc, a mandrel and a force limiting rod, wherein the frame has a first parallel plate, a second parallel plate and a vertical plate; a gear hole is formed in the first parallel plate; a round hole is formed in the second parallel plate; a pawl is arranged on the locking disc; the mandrel has a hollow part; the force limiting rod is arranged in the hollow part; one end of the force limiting rod is peripherally fixed with the locking disc, and the other end is peripherally fixed with the mandrel; a convex block is arranged on the locking disc, and extends into the hollow part at one end of the mandrel; and at least one or more than one ribs are arranged on the peripheral surface of the convex block, and are in interference fit with the mandrel. The safety belt winder can firmly fix the mandrel and the locking disc without bringing adverse effect on the practicability in ordinary use; and on the other hand, under such conditions as vehicle collision, the used ribs are connected under low load to be extruded off under the effect of rotating force without influencing the energy absorption load of the force limiting rod, so that the absorbing energy is stable and reliable.
Description
Technical field
The present invention relates to a kind of Webbing retractor, particularly relate to the Webbing retractor that a kind of energy-absorbing is more reliable and more stable.
Background technology
Mandrel of automobile safety belt and lock plate connection mode have polytype, as peg type, and outer-enwraped type etc.
The effect of car belt is exactly in case of emergency be fixed on seat by driver and crew; but in nearest seat belt apparatus, possessed pre-tightening device; its object is to; under the vehicle emergency that collision etc. causes; by eliminating the lax of ribbon; constrained in before driver and crew move forward on seat, improved the protective value to driver and crew.The action of pre-tightening device uses gunpowder usually, by the application force of gas produced when gunpowder explosion, is regained rapidly by ribbon.But the strength of gunpowder is not so good control, the chest burden that all will add an energy absorption device cause due to inertia so general to alleviate driver and crew.
Energy absorption device generally uses force-limit rod, is commonly called as torsion bar.One end of force-limit rod is set on mandrel, and the other end is set on the lock plate of lock in emergency mechanism, and lock plate and mandrel match.When usually using, can firmly be fixed together, on the one hand, practicality can not be affected, on the other hand, when vehicle collision etc. in situation, because the lock plate that is combined together and mandrel can relatively rotate, so reach the object of energy-absorbing under low load condition.
All the time, pin connects and is considered to a kind of reliable connection mode, even if the load of pin is added on the energy absorption load of force-limit rod, because the breaking load of pin is also less than force-limit rod energy absorption load, therefore there will not be some special problems.But in recent years, owing to needing the performance improving the shock absorbing capability of vehicle body and the constraint technology to chaufeur, force-limit rod energy absorption load declines, start to produce the situation that the breaking load of pin is also larger than force-limit rod energy absorption load, can impact force-limit rod energy absorption load, cause energy-absorbing unstable.
Summary of the invention
The object of the invention is the defect overcoming prior art existence, there is provided a kind of can firmly fixed central spindle and lock plate when every day use, the Webbing retractor of adverse effect can not be brought to practicality, on the other hand, in the situations such as vehicle collision, rib connection that it uses is subject to the effect of rotational force at low load and is extruded, but can not impact force-limit rod energy absorption load, and energy-absorbing is reliable and stable.
The technical solution adopted for the present invention to solve the technical problems is: a kind of Webbing retractor, comprise framework, lock plate, mandrel and force-limit rod, described framework has the first parallel plate, second parallel plate and the diaphragm plate be connected between described first parallel plate and the second parallel plate, described first parallel plate is provided with gear hole, described second parallel plate is provided with circular hole, described lock plate is provided with for engaging with the ratchet of lock in emergency safety strap with described gear hole, described mandrel has hollow bulb, described force-limit rod is arranged in described hollow bulb, one end of described force-limit rod and lock plate circumference are fixed, its other end and mandrel circumference are fixed, described lock plate is provided with projection, this projection stretches in the hollow bulb of mandrel one end, the side face of described projection is provided with at least one or one or more rib, this rib axially extends along mandrel, rib on described projection and mandrel interference fit.
Described force-limit rod two ends are provided with spline, described lock plate is provided with hole along its axis, this hole be provided with the keyway matched with the spline on force-limit rod for the one end be connected with force-limit rod, the keyway on the spline of described force-limit rod one end and lock plate is connected.
One end away from lock plate of described mandrel hollow bulb is provided with the keyway matched with the spline on force-limit rod, and the described spline of the force-limit rod other end and the keyway of mandrel hollow bulb are connected.
Described at least one or one or more rib annular be distributed on projection side face.
Beneficial effect of the present invention: when being in an emergency, ratchet can be engaged on framework by Locking Device, and lock plate and mandrel just stop operating simultaneously, driver and crew are fixed on seat.Because the inertia of human body and pre-tightening device can produce a huge power, when force value exceedes certain limit, mandrel can overcome the fixing of lock plate rib, relatively rotates, finally reaches the object of energy-absorbing.Replace pin with rib, energy-absorbing is more reliable and more stable, and more simple and convenient than peg type in actual assembled process, and right alignment is high, has promotional value.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the decomposition texture schematic diagram of the preferred embodiments of the present invention;
Fig. 2 is front view of the present invention;
Cutaway view is cutd open in Fig. 3 Fig. 2;
Fig. 4 is the connection structure schematic diagram of lock plate of the present invention, mandrel and force-limit rod;
Fig. 5 is the structure for amplifying schematic diagram of A in Fig. 4;
Fig. 6 is pin limiter diagram of curves;
Fig. 7 is rib limiter diagram of curves of the present invention.
Detailed description of the invention
As shown in Fig. 1 ~ 5, a kind of Webbing retractor, comprises framework 1, lock plate 2, mandrel 3 and force-limit rod 4.Described framework 1 has the first parallel plate 11, second parallel plate 12 and is connected to the diaphragm plate 13 between described first parallel plate 11 and the second parallel plate 12, described first parallel plate 11 is provided with gear hole 14, described second parallel plate 12 is provided with circular hole 15.Described lock plate 2 is provided with the ratchet 5 for engaging with described gear hole 14 with lock in emergency safety strap.Described mandrel 3 has hollow bulb 31, described force-limit rod 4 is arranged in described hollow bulb 31, one end of described force-limit rod 4 and lock plate 2 circumference are fixed, its other end and mandrel 3 circumference are fixed, preferred embodiment: described force-limit rod 4 two ends are provided with spline 41, described lock plate 2 is provided with hole along its axis, this hole the one end be connected with force-limit rod 4 is provided with the keyway matched with the spline 41 on force-limit rod 4, the spline of described force-limit rod 4 one end 41 is connected with the keyway on lock plate 2; One end away from lock plate 2 of described mandrel hollow bulb 31 is provided with the keyway matched with the spline 41 on force-limit rod 4, and the spline 41 of described force-limit rod 4 other end is connected with the keyway of mandrel hollow bulb 31.Described mandrel 3 away from an end-rack of lock plate 2 in the circular hole 15 of the second parallel plate 12.
Described lock plate 2 is provided with projection 21, this projection 21 is cylindrical, this projection 21 stretches in the hollow bulb 31 of mandrel 3 one end, on the side face of described projection 21, annular is evenly equipped with at least one or one or more rib 22, this rib 22 axially extends along mandrel 3, the rib 22 on described projection 21 and mandrel 3 interference fit.The thickness of described rib 22, length, shape are different according to the difference of required force value, and preferred embodiment: the thickness of described rib 22 is 0.2 ~ 0.4mm, its length is 3 ~ 6mm.Gap between the side face of described projection 21 and the inwall of mandrel hollow bulb 31 is different and different according to described rib quantity, length, thickness, shape etc., and preferred gap is 0.1 ~ 0.3mm.In addition, described rib 22 is preferably set to 1 ~ 6.When described rib 22 is subject to the torsion of 1000-3000N between lock plate 2 and mandrel 3, rib 22 is squeezed by the inwall of mandrel hollow bulb 31 and overcomes friction and rotate.
Principle of work of the present invention: when being in an emergency, ratchet 5 can be engaged on framework 1 by Locking Device, and lock plate 2 and mandrel 3 just stop operating simultaneously, driver and crew are fixed on seat.Because the inertia of human body and pre-tightening device can produce a huge power, when force value exceedes certain limit, mandrel 3 can overcome the fixing of lock plate rib 22, relatively rotates, finally reaches the object of energy-absorbing
The advantage that the present invention compares general pin fixing intuitively can be found out from Fig. 6,7, and energy-absorbing of the present invention is more fixing than pin more reliable and more stable.
Should be appreciated that specific embodiment described above only for explaining the present invention, being not intended to limit the present invention.Still be among protection scope of the present invention by spirit institute's apparent change of extending out of the present invention or change.
Claims (4)
1. a Webbing retractor, comprise framework (1), lock plate (2), mandrel (3) and force-limit rod (4), described framework (1) has the first parallel plate (11), second parallel plate (12) and the diaphragm plate (13) be connected between described first parallel plate (11) and the second parallel plate (12), described first parallel plate (11) is provided with gear hole (14), described second parallel plate (12) is provided with circular hole (15), described lock plate (2) is provided with for engaging with the ratchet of lock in emergency safety strap (5) with described gear hole (14), described mandrel (3) has hollow bulb (31), described force-limit rod (4) is arranged in described hollow bulb (31), one end of described force-limit rod (4) and lock plate (2) circumference are fixed, its other end and mandrel (3) circumference are fixed, it is characterized in that: described lock plate (2) is provided with projection (21), this projection (21) stretches in the hollow bulb (31) of mandrel (3) one end, the side face of described projection (21) is provided with at least one or one or more rib (22), this rib (22) axially extends along mandrel (3), rib (22) on described projection (21) and mandrel (3) interference fit.
2. Webbing retractor according to claim 1, it is characterized in that: described force-limit rod (4) two ends are provided with spline (41), (2) are provided with hole along its axis to described lock plate, this hole the one end be connected with force-limit rod (4) is provided with the keyway matched with the spline (41) on force-limit rod (4), the spline (41) of described force-limit rod (4) one end is connected with the keyway on lock plate (2).
3. Webbing retractor according to claim 2, it is characterized in that: one end away from lock plate (2) of described mandrel hollow bulb (31) is provided with the keyway matched with the spline (41) on force-limit rod (4), the spline (41) of described force-limit rod (4) other end and the keyway of mandrel hollow bulb (31) are connected.
4. Webbing retractor according to claim 1, is characterized in that: described at least one or one or more rib (22) annular be distributed on projection (21) side face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310739374.0A CN104742856A (en) | 2013-12-30 | 2013-12-30 | Safety belt winder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310739374.0A CN104742856A (en) | 2013-12-30 | 2013-12-30 | Safety belt winder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104742856A true CN104742856A (en) | 2015-07-01 |
Family
ID=53583306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310739374.0A Pending CN104742856A (en) | 2013-12-30 | 2013-12-30 | Safety belt winder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104742856A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107804273A (en) * | 2017-10-20 | 2018-03-16 | 重庆电子工程职业学院 | A kind of automobile safety belt retractor |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19517440A1 (en) * | 1994-05-25 | 1995-11-30 | Volkswagen Ag | Safety belt retractor for vehicles with overload protection |
| GB2326851A (en) * | 1997-07-04 | 1999-01-06 | Alliedsignal Ltd | A seat belt retractor |
| US20020023981A1 (en) * | 2000-08-31 | 2002-02-28 | Tomonori Nagata | Webbing retractor |
| CN1440338A (en) * | 2000-07-14 | 2003-09-03 | 勃利德汽车技术股份有限公司 | Energy absorbing safety band rewinder |
| WO2005037616A1 (en) * | 2003-10-16 | 2005-04-28 | Autoliv Development Ab | Self-locking belt retractor |
| CN101306676A (en) * | 2007-05-18 | 2008-11-19 | 德尔斐韩国株式会社 | Seat belt retractor |
| DE102011085874A1 (en) * | 2011-11-07 | 2013-05-08 | Autoliv Development Ab | Belt tensioner for safety belt of motor vehicle, has projections engaged into recesses, and two parts of belt shaft interconnected in form fit manner in rotation direction of one of two parts |
| CN203727335U (en) * | 2013-12-30 | 2014-07-23 | 常州博万达汽车安全设备有限公司 | Safety belt retractor |
-
2013
- 2013-12-30 CN CN201310739374.0A patent/CN104742856A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19517440A1 (en) * | 1994-05-25 | 1995-11-30 | Volkswagen Ag | Safety belt retractor for vehicles with overload protection |
| GB2326851A (en) * | 1997-07-04 | 1999-01-06 | Alliedsignal Ltd | A seat belt retractor |
| CN1440338A (en) * | 2000-07-14 | 2003-09-03 | 勃利德汽车技术股份有限公司 | Energy absorbing safety band rewinder |
| US20020023981A1 (en) * | 2000-08-31 | 2002-02-28 | Tomonori Nagata | Webbing retractor |
| WO2005037616A1 (en) * | 2003-10-16 | 2005-04-28 | Autoliv Development Ab | Self-locking belt retractor |
| CN101306676A (en) * | 2007-05-18 | 2008-11-19 | 德尔斐韩国株式会社 | Seat belt retractor |
| DE102011085874A1 (en) * | 2011-11-07 | 2013-05-08 | Autoliv Development Ab | Belt tensioner for safety belt of motor vehicle, has projections engaged into recesses, and two parts of belt shaft interconnected in form fit manner in rotation direction of one of two parts |
| CN203727335U (en) * | 2013-12-30 | 2014-07-23 | 常州博万达汽车安全设备有限公司 | Safety belt retractor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107804273A (en) * | 2017-10-20 | 2018-03-16 | 重庆电子工程职业学院 | A kind of automobile safety belt retractor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150701 |
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| RJ01 | Rejection of invention patent application after publication |