CN110525374A - Limit type mandrel and seat belt retractor - Google Patents
Limit type mandrel and seat belt retractor Download PDFInfo
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- CN110525374A CN110525374A CN201910985616.1A CN201910985616A CN110525374A CN 110525374 A CN110525374 A CN 110525374A CN 201910985616 A CN201910985616 A CN 201910985616A CN 110525374 A CN110525374 A CN 110525374A
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- mandrel
- lug boss
- limiter
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- shaped groove
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- 230000000630 rising effect Effects 0.000 claims description 2
- 230000006978 adaptation Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 18
- 238000010586 diagram Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
The present invention relates to safety belt technical fields, more particularly, to a kind of limit type mandrel and seat belt retractor.Limit type mandrel on resistance piece on the one hand by being arranged curved clamping groove, one end of limiter ring can be connected in curved clamping groove, the other end is around abutting part and extends on the end face of mandrel ontology at least one week, therefore second level limiter stroke is improved during second level limiter.Simultaneously, male threaded joint is additionally provided on resistance piece, female threaded joint is provided on the inner wall of mandrel ontology, during second level limiter, with the rotation of mandrel ontology, female threaded joint on mandrel ontology can screw in male threaded joint, the female threaded joint of mandrel ontology is threaded to the root of male threaded joint at the end of the second level limiter process of limiter ring, at this time under the action of screw thread limits, so that mandrel ontology and spindle nose stop relatively rotating, the control stopped to limiter is realized.
Description
Technical field
The present invention relates to safety belt technical fields, more particularly, to a kind of limit type mandrel and seat belt retractor.
Background technique
Safety belt occurs to collide thing in vehicle for protecting driver or rider in driving or ride-on vehicles
Therefore the coiler of safety belt is locked, so as to which human body is limited on seat.However multiplied Vehicle Speed it is higher or
When strong collide occurs, safety belt continuation will continue to be drawn out under the action of the inertia of human body.For the continuation for limiting safety belt
It pulling out, the lasting pull-out for increasing limiter structure to limit safety belt is arranged in the prior art in the mandrel of seat belt retractor, but
On the one hand existing limiter structure limiter stroke is short, and another aspect limiter mode is single, therefore limiter has much room for improvement.
Summary of the invention
The application's is designed to provide a kind of limit type mandrel and seat belt retractor, existing to improve to a certain extent
The technical problem that the limiter structure limiter stroke of some safety belts is short and limiter mode is single.
This application provides a kind of limit type mandrels, are used for seat belt retractor, including mandrel ontology, resistance piece, limiter
Ring and spindle nose；
The resistance piece is connected between the mandrel ontology and the spindle nose；Song is formed on one end of the resistance piece
Shape clamping groove forms abutting part on the end face of the mandrel ontology；One end of the limiter ring is located in the curved clamping groove,
The other end of the limiter ring can bypass the abutting part and extend on the end face of the mandrel ontology；
It is formed with male threaded joint on the outer wall of the resistance piece, is formed on the mandrel ontology and the external screw thread
The compatible female threaded joint of interconnecting piece；It is described when the mandrel ontology is rotated in a first direction relative to the spindle nose
Female threaded joint can screw in the male threaded joint until the mandrel ontology and the spindle nose stop relatively rotating.
In the above-mentioned technical solutions, it is preferable that the quantity of the abutting part on the end face of the mandrel ontology is one,
In the shape of a spiral, and the rotation direction of the extension is described for extension of the limiter ring on the end face of the mandrel ontology
First direction.
In any of the above-described technical solution, it is preferable that the mandrel ontology includes beam barrel and retainer nut；
The retainer nut is set to one end close to the spindle nose in the beam barrel, and sets on the inner wall of the beam barrel
It is equipped with locating slot, positioning region is formed on the outer wall of the retainer nut, the positioning region can be clamped to the locating slot,
So that the retainer nut can move synchronously with the beam barrel；The inner surface of the retainer nut forms the internal screw thread connection
Portion.
In any of the above-described technical solution, it is preferable that the resistance piece includes bar portion and head；
The bar portion is located in the mandrel, and one end of the bar portion and the mandrel ontology are keyed；The bar portion
The other end and the head be keyed；
The head is towards being formed with the curved clamping groove, the outer wall on the head on the end face of one end of the spindle nose
Stopper section is provided at the root of the upper correspondence male threaded joint.
In any of the above-described technical solution, it is preferable that the head is towards being formed on the end face of one end of the spindle nose
First lug boss, the second lug boss and third protrusion portion；
Form the first shaped groove between first lug boss and second lug boss, first lug boss and described
The second shaped groove is formed between third protrusion portion, first shaped groove is connected with second shaped groove and forms the song
Shape clamping groove；
Be formed on the limiter ring the first clamping portion compatible with first shaped groove and with it is described second curved
Compatible second clamping portion of slot, so that one end of the limiter ring can be connected in the curved clamping groove.
In any of the above-described technical solution, it is preferable that second lug boss and the third protrusion portion are located at described the
The two sides of one lug boss, and first lug boss is in the form of a column, so that first shaped groove and second shaped groove are formed
The curved clamping groove annular in shape.
In any of the above-described technical solution, it is preferable that also set up between second lug boss and the third protrusion portion
There is the 4th lug boss, forms third limiting slot, the 4th lug boss between the 4th lug boss and second lug boss
The 4th shaped groove is formed between the third protrusion portion；It is the third limiting slot, first shaped groove, described second curved
Slot and the 4th shaped groove are sequentially connected and pass to form the curved clamping groove；
Be also formed on the limiter ring third clamping portion compatible with the third limiting slot and with it is the described 4th bent
Compatible 4th clamping portion of shape slot, the third clamping portion, first clamping portion, second clamping portion and the described 4th
Clamping portion is sequentially connected with and can be connected in the curved clamping groove.
In any of the above-described technical solution, it is preferable that the quantity of the 4th lug boss is two, and two the described 4th convex
The portion of rising is symmetrically disposed on the two sides of first lug boss, and with second lug boss and the third protrusion portion formed about
Symmetrical two third limiting slots of first lug boss and two the 4th shaped grooves.
In any of the above-described technical solution, it is preferable that be also formed on the limiter ring with the third clamping portion sequentially
The 5th clamping portion being connected and extension；
5th clamping portion can extend to the side that the abutting part deviates from the resistance piece, and the extension is in institute
It states and extends in the shape of a spiral on the end face of mandrel ontology, so that the mandrel is rotated relative to the spindle nose along the first direction
When, the abutting part can be abutted against with the 5th clamping portion, and the 5th clamping portion and the extension is pushed to wind
In on the outer wall on the head.
Present invention also provides a kind of seat belt retractors, including limit type mandrel described in any of the above embodiments.
Compared with prior art, the invention has the benefit that
For the limit type mandrel of the application on the one hand by the way that curved clamping groove is arranged on resistance piece, one end of limiter ring can
It is connected in curved clamping groove, the other end of limiter ring can bypass the abutting part and prolong on the end face of the mandrel ontology
It extends to one week less, therefore improves second level limiter stroke during second level limiter.Meanwhile outer spiral shell is additionally provided on resistance piece
Line interconnecting piece is provided with female threaded joint on the inner wall of mandrel ontology, during second level limiter, with mandrel ontology
It rotates, the female threaded joint on mandrel ontology can screw in male threaded joint, terminate in the second level limiter process of limiter ring
It is afterwards that limiter ring is all wound in the annular space space between abutting part and the head of resistance piece, the internal screw thread of mandrel ontology connects at this time
Socket part and male threaded joint assembly in place, under the action of screw thread limitation, stop between mandrel ontology and the head of resistance piece
It relatively rotates, so that mandrel ontology and spindle nose stop relatively rotating, realizes the control stopped to limiter.
The application seat belt retractor includes limit type mandrel, therefore also having can be more preferable while improving limiter stroke
Ground controls the beneficial effect that limiter stops.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the resistance piece of limit type mandrel provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram on the head of the resistance piece of limit type mandrel provided in an embodiment of the present invention；
Fig. 3 is the resistance piece of limit type mandrel provided in an embodiment of the present invention and the structural schematic diagram of retainer nut；
Fig. 4 is the structural schematic diagram of the mandrel ontology of limit type mandrel provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of the limiter ring of limit type mandrel provided in an embodiment of the present invention；
Fig. 6 is the assembling structure signal of the limiter ring and resistance piece and mandrel of limit type mandrel provided in an embodiment of the present invention
Figure；
Fig. 7 is the structural schematic diagram of limit type mandrel provided in an embodiment of the present invention.
Appended drawing reference:
1- mandrel ontology, 12- beam barrel, 121- abutting part, 122- locating slot, 13- retainer nut, the positioning region 131-, 132-
Female threaded joint, 2- resistance piece, 21- bar portion, the head 22-, the first lug boss of 221-, the second lug boss of 222-, 223- third
Lug boss, the 4th lug boss of 224-, the first shaped groove of 225-, the second shaped groove of 226-, 227- third limiting slot, 228- the 4th are bent
Shape slot, the stopper section 229-, 230- male threaded joint, 3- limiter ring, the first clamping portion 31-, the second clamping portion 32-, 33- third
Clamping portion, the 4th clamping portion 34-, the 5th clamping portion 35-, 36- extension, 4- spindle nose.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.
The component for the embodiment of the present invention for usually describing and showing in attached drawing here can be with a variety of different configurations
To arrange and design.Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below and is wanted
The scope of the present invention of protection is sought, but is merely representative of selected embodiment of the invention.
Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Referring to the limit type mandrel and seat belt retractor of Fig. 1 to Fig. 7 description according to some embodiments of the invention.
Referring to shown in Fig. 1 to Fig. 7, embodiments herein provides a kind of limit type mandrel comprising mandrel ontology 1,
Resistance piece 2, limiter ring 3 and spindle nose 4, wherein mandrel ontology 1 is for winding safety belt；Resistance piece 2 is used for 1 He of connecting mandrel ontology
Spindle nose 4, while limiter ring 3 can be cooperated to limit the relative rotation between mandrel ontology 1 and spindle nose 4.
Specifically, referring to shown in Fig. 1, Fig. 4, Fig. 6 and Fig. 7, the inner hollow of mandrel ontology 1, safety belt is set around mandrel
On the outer wall of ontology 1, spindle nose 4 is set to one end of mandrel ontology 1.Resistance piece 2 include bar portion 21 and head 22, the one of bar portion 21
End is located in mandrel ontology 1 and connect with the first end spline of mandrel ontology 1, and the other end of bar portion 21 and the one end on head 22 connect
It connects, the other end on head 22 stretches out in the end face of the second end of mandrel ontology 1, and is clamped with 4 phase of spindle nose, and in the another of head 22
Curved clamping groove is formed on the end face of one end, one end of limiter ring 3 is connected in curved clamping groove, therefore the one of limiter ring 3
End can be fixed relative to head 22；Abutting part 121, abutting part 121 are formed on the end face of the second end of mandrel ontology 1
Positioned at the side of curved clamping groove, the other end of limiter ring 3 can bypass the outside of abutting part 121 and at the end of mandrel ontology 1
Extend on face, and the extending direction of limiter ring 3 is the opposite direction of 1 rotation direction of mandrel ontology when safety belt pulls out.Therefore just
Often when driving, mandrel ontology 1 and spindle nose 4 rotate synchronously, and safety belt normally can be drawn out or withdraw；Collision accident is occurring
When, safety belt pretensioner control spindle nose 4 stops operating, therefore the head 22 of resistance piece 2 also stops operating, and the inertia meeting of human body
Safety belt is pulled to continue to be drawn out, so that mandrel ontology 1 is continued to rotate relative to spindle nose 4, the abutting part 121 on mandrel ontology 1
Also it rotates with it.When mandrel ontology 1 is rotated relative to spindle nose 4, the 21 both ends force unbalance of bar portion of resistance piece 2, therefore resistance
The bar portion 21 of part 2 can twist, and the process that bar portion 21 is reversed is the level-one limiter to mandrel ontology 1.And in mandrel ontology 1
During rotation, since one end of limiter ring 3 bypasses abutting part 121, during mandrel ontology 1 rotates, abut
Portion 121 can abut limiter ring 3 and the part of limiter ring 3 extended on 1 end face of mandrel ontology is pushed to be wound to abutting part 121
Between resistance piece 2, until limiter ring 3 fills up the annular space space between abutting part 121 and resistance piece 2, and make mandrel ontology 1 with
Resistance piece 2, spindle nose 4 stop operating, and deformation occurs to prevent the rotation of mandrel ontology 1, therefore this mistake for limiter ring 3 during this
Journey is the second level limiter to mandrel ontology 1.
It should be noted that safety belt pretensioner is technology mature in the prior art to the preload effect at spindle nose end, because
This concrete principle process no longer illustrates.
For above-mentioned limiter process, referring to fig. 2, shown in Fig. 5 and Fig. 6, since the limit type mandrel of the embodiment of the present application exists
The head 22 of resistance piece 2 is provided with curved clamping groove, so that one end clamping stagnation of limiter ring 3 is in curved clamping groove, i.e., to limiter
One end of ring 3 plays the role of stable clamping stagnation, while the other end of limiter ring 3 extends on the end face of mandrel ontology 1, so that
The second level limiter stroke of limiter ring 3 is selected, can be according to second level limiter under the premise of guaranteeing that 3 one end of limiter ring is fixed
Range demands and development length of the limiter ring 3 on the end face of mandrel ontology 1 is selectively set.Preferably, mandrel ontology 1
The quantity of abutting part 121 on end face be one, the part of extension of the limiter ring 3 on the end face of mandrel ontology 1 in the shape of a spiral,
The degree of its corresponding central angle is more than or equal to 360 degree, i.e. the second level limiter stroke of mandrel ontology 1 is at least one week；And limiter
The rotation direction of the part of extension of the ring 3 on the end face of mandrel ontology 1 is first direction, when first direction is that safety belt is drawn out
The opposite direction of 1 rotation direction of mandrel ontology.
It should be noted that the bar portion 21 of resistance piece 2 and head 22 can be an integral structure, or split type knot
Structure, preferably split type structure, bar portion 21 is that spline connects with head 22 at this time.
In addition, for the stopping of preferably control limiter process, the application is in resistance piece 2 referring to shown in Fig. 1, Fig. 3 and Fig. 4
Head 22 outer wall on be provided with male threaded joint 230, be provided on the inner wall of one end of corresponding mandrel ontology 1 in
Threaded joints 132, female threaded joint 132 and male threaded joint 230 are adapted, during second level limiter, with core
The rotation of shaft body 1, the female threaded joint 132 on mandrel ontology 1 can screw in male threaded joint 230, in limiter ring 3
It is that the annular space that limiter ring 3 is all wound between abutting part 121 and the head 22 of resistance piece 2 is empty after second level limiter process
Between, the female threaded joint 132 of mandrel ontology 1 is threaded to the root of male threaded joint 230, i.e. female threaded joint 132 at this time
Assembled in place with male threaded joint 230, at this time under the action of screw thread limits, the head 22 of mandrel ontology 1 and resistance piece 2 it
Between stop relatively rotating so that mandrel ontology 1 and spindle nose 4 stop relatively rotating, be better achieved and limiter stopped
Control.Preferably, the root of its corresponding male threaded joint 230 of the head of resistance piece 2 22 is provided with stopper section 229, backstop
Portion 229 further can carry out backstop to mandrel ontology 1, it is ensured that can be realized limiter stopping.
Preferably, as shown in figure 3 and figure 4, mandrel ontology 1 includes beam barrel 12 and retainer nut 13 to ginseng, and retainer nut 13 sets
It is placed in one end of the close spindle nose 4 in beam barrel 12, and is provided with locating slot 122 on the inner wall of beam barrel 12, the quantity of locating slot 122
It can be one or more, correspond to locating slot 122 on the outer wall of retainer nut 13 and be formed with positioning region 131, positioning region 131 can
In clamping to locating slot 122, so that retainer nut 13 can move synchronously with beam barrel 12；In the inner surface of retainer nut 13 is formed
Threaded joints 132.
In addition it is also necessary to illustrate, the external screw thread on female threaded joint 132 and resistance piece 2 on retainer nut 13
The limiter stopped process of interconnecting piece 230 synchronous with the second level limiter process of limiter ring 3 can carry out, i.e., when second level limiter process stops
When, the female threaded joint 132 of retainer nut 13 is threaded at the stopper section 229 on resistance piece 2.In addition, on retainer nut 13
The limiter stopped process of male threaded joint 230 on female threaded joint 132 and resistance piece 2 can also be with the second level of limiter ring 3
Limiter process is asynchronous on or off, it can when second level limiter does not stop, the female threaded joint 132 of retainer nut 13
It is threaded to complete limiter stopped process etc. at the stopper section 229 on resistance piece 2.It is for second level limiter process and limiter stopped process
It is no to synchronize the on or off demand for essentially consisting in mandrel component to safety belt protected mode.
Illustrate the curved clamping groove and corresponding limit on the head 22 of the resistance piece 2 of the application below with reference to Fig. 2, Fig. 5 and Fig. 6
Some preferred embodiments of power ring 3.
In embodiments herein, referring to fig. 2, shown in Fig. 5 and Fig. 6, the head 22 of resistance piece 2 is towards the one of spindle nose 4
The first lug boss 221, the second lug boss 222 and third protrusion portion 223 are formed on the end face at end；
The first shaped groove 225, the first lug boss 221 and third are formed between first lug boss 221 and the second lug boss 222
The second shaped groove 226 is formed between lug boss 223, the first shaped groove 225 is connected with the second shaped groove 226 and forms curved card
Access slot；It is formed on limiter ring 3 with compatible first clamping portion 31 of the first shaped groove 225 and is fitted with 226 phase of the second shaped groove
The second clamping portion 32 matched, so that one end of limiter ring 3 can be connected in curved clamping groove.And preferably, the second lug boss
222 and third protrusion portion 223 be located at the two sides of the first lug boss 221, and the first lug boss 221 is cylindrical, so that first is bent
Shape slot 225 and the second shaped groove 226 form curved clamping groove annular in shape.The setting of cricoid curved clamping groove can be to limiter
More stable position-limiting action is played in one end of ring 3, increases the frictional force on the head 22 of limiter ring 3 and resistance piece 2, limiter process
It is more stable.
In addition, to further increase limit of the curved clamping groove to one end of limiter ring 3, referring to fig. 2, Fig. 5 and Fig. 6 institute
Show, it is preferable that embodiments herein is additionally provided with the 4th lug boss between the second lug boss 222 and third protrusion portion 223
224, third limiting slot 227, the 4th lug boss 224 and third protrusion are formed between the 4th lug boss 224 and the second lug boss 222
The 4th shaped groove 228 is formed between portion 223；Third limiting slot 227, the first shaped groove 225, the second shaped groove 226 and third are bent
Shape slot, which is sequentially connected, to be passed to form curved clamping groove；Third compatible with third limiting slot 227 has been correspondingly formed on limiter ring 3
Clamping portion 33 and the 4th clamping portion 34 compatible with the 4th shaped groove 228, third clamping portion 33, the first clamping portion 31, second
Clamping portion 32 and the 4th clamping portion 34 are sequentially connected with and can be connected in curved clamping groove.By the head that resistance piece 2 is arranged in
Multiple shaped grooves are set in portion 22, the stability of the position-limiting action to limiter ring 3 can be further increased, further increased simultaneously
The frictional force on the head 22 of limiter ring 3 and resistance piece 2, limiter process are more stable.
In addition, to increase the applicability of the resistance piece 2 of the application and limiter ring 3, to meet safety belt by mandrel when pull
The case where ontology 1 is rotated to different directions, embodiments herein devises two for the rigging position of resistance piece 2 and stop collar
Kind of mode referring to fig. 2, shown in Fig. 5 and Fig. 6 can be to meeting safety belt by mandrel ontology 1 when pull along clockwise or counterclockwise
Limiter effect when direction rotates.Specifically, it is two, two that the quantity of the 4th lug boss 224, which is arranged, in embodiments herein
4th lug boss 224 is symmetrically disposed on the two sides of the first lug boss 221, and with 223 shape of the second lug boss 222 and third protrusion portion
At about the symmetrical two third limiting slots 227 of the first lug boss 221 and two the 4th shaped grooves 228, therefore the first shaped groove
225, the second shaped groove 226 forms limiter ring 3 with a third limiting slot 227 of one side and the 4th shaped groove 228
First rigging position, the first shaped groove 225, the second shaped groove 226 and a third limiting slot 227 of its other side and one the
Four shaped grooves 228 form the second rigging position of limiter ring 3, due to two third limiting slots 227 and two the 4th shaped grooves 228
It is symmetrical respectively about the first lug boss 221, therefore two are capable of forming about the symmetrical rigging position of the first lug boss 221, make
Extending direction of the one end of the limiter silk of two rigging positions on the end face of mandrel ontology 1 must be installed on the contrary, i.e. corresponding
The different rotation directions of two kinds of mandrel ontology 1.
In addition, referring to fig. 2, shown in Fig. 5 and Fig. 6, be also formed with to be sequentially connected with third clamping portion 33 on limiter ring 3 and connect
5th clamping portion 35 and extension 36；Preferably, the 5th clamping portion 35 has certain radian, for being abutted against with abutting part 121,
So that abutting part 121 is more stable to the pushing course of limiter ring 3；And extension 36 can extend to abutting part 121 away from resistance
The side of power part 2, extension 36 extend in the shape of a spiral on the end face of mandrel ontology 1, so that mandrel is relative to spindle nose 4 along first
When direction rotates, abutting part 121 can be abutted against with the 5th clamping portion 35, and the 5th clamping portion 35 and extension 36 is pushed to wind
In on the outer wall on head 22.
Present invention also provides a kind of seat belt retractors, the limit type mandrel including above-described embodiment.Due to safety belt
Coiler system includes limit type mandrel, thus whole beneficial effects with limit type mandrel, and this is no longer going to repeat them.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of limit type mandrel, be used for seat belt retractor, which is characterized in that including mandrel ontology, resistance piece, limiter ring and
Spindle nose；
The resistance piece is connected between the mandrel ontology and the spindle nose；Curved card is formed on one end of the resistance piece
Access slot forms abutting part on the end face of the mandrel ontology；One end of the limiter ring is located in the curved clamping groove, described
The other end of limiter ring can bypass the abutting part and extend on the end face of the mandrel ontology；
It is formed with male threaded joint on the outer wall of the resistance piece, is formed on the mandrel ontology and is connect with the external screw thread
The compatible female threaded joint in portion；When the mandrel ontology is rotated in a first direction relative to the spindle nose, the interior spiral shell
Line interconnecting piece can screw in the male threaded joint until the mandrel ontology and the spindle nose stop relatively rotating.
2. limit type mandrel according to claim 1, which is characterized in that the abutting on the end face of the mandrel ontology
The quantity in portion is one, extension of the limiter ring on the end face of the mandrel ontology in the shape of a spiral, and the extension
Partial rotation direction is the first direction.
3. limit type mandrel according to claim 2, which is characterized in that the mandrel ontology includes beam barrel and stop spiral shell
It is female；
The retainer nut is set to one end close to the spindle nose in the beam barrel, and is provided on the inner wall of the beam barrel
Locating slot is formed with positioning region on the outer wall of the retainer nut, and the positioning region can be clamped to the locating slot, so that
The retainer nut can move synchronously with the beam barrel；The inner surface of the retainer nut forms the female threaded joint.
4. limit type mandrel according to claim 3, which is characterized in that the resistance piece includes bar portion and head；
The bar portion is located in the mandrel, and one end of the bar portion and the mandrel ontology are keyed；The bar portion it is another
One end and the head are keyed；
The head is right on the outer wall on the head towards being formed with the curved clamping groove on the end face of one end of the spindle nose
It answers and is provided with stopper section at the root of the male threaded joint.
5. limit type mandrel according to claim 4, which is characterized in that end of the head towards one end of the spindle nose
The first lug boss, the second lug boss and third protrusion portion are formed on face；
The first shaped groove, first lug boss and the third are formed between first lug boss and second lug boss
The second shaped groove is formed between lug boss, first shaped groove is connected with second shaped groove and forms the curved card
Access slot；
Be formed on the limiter ring the first clamping portion compatible with first shaped groove and with the second shaped groove phase
Second clamping portion of adaptation, so that one end of the limiter ring can be connected in the curved clamping groove.
6. limit type mandrel according to claim 5, which is characterized in that second lug boss and the third protrusion portion
Positioned at the two sides of first lug boss, and first lug boss is in the form of a column, so that first shaped groove and described second
Shaped groove forms the curved clamping groove annular in shape.
7. limit type mandrel according to claim 6, which is characterized in that second lug boss and the third protrusion portion
Between be additionally provided with the 4th lug boss, between the 4th lug boss and second lug boss formed third limiting slot, it is described
The 4th shaped groove is formed between 4th lug boss and the third protrusion portion；The third limiting slot, first shaped groove, institute
It states the second shaped groove and the 4th shaped groove is sequentially connected and passes to form the curved clamping groove；
Be also formed on the limiter ring third clamping portion compatible with the third limiting slot and with the 4th shaped groove
Compatible 4th clamping portion, the third clamping portion, first clamping portion, second clamping portion and the 4th clamping
Portion is sequentially connected with and can be connected in the curved clamping groove.
8. limit type mandrel according to claim 7, which is characterized in that the quantity of the 4th lug boss be two, two
A 4th lug boss is symmetrically disposed on the two sides of first lug boss, and convex with second lug boss and the third
The portion of rising is formed about symmetrical two third limiting slots of first lug boss and two the 4th shaped grooves.
9. limit type mandrel according to claim 8, which is characterized in that be also formed on the limiter ring and the third
Clamping portion is sequentially connected the 5th clamping portion connect and extension；
5th clamping portion can extend to the side that the abutting part deviates from the resistance piece, and the extension is in the core
Extend in the shape of a spiral on the end face of shaft body, when so that the mandrel being rotated relative to the spindle nose along the first direction, institute
Stating abutting part can abut against with the 5th clamping portion, and it is described to push the 5th clamping portion and the extension to be wound in
On the outer wall on head.
10. a kind of seat belt retractor, which is characterized in that including limit type mandrel described in any one of claims 1 to 9.
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Citations (5)
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| US20150083841A1 (en) * | 2011-11-30 | 2015-03-26 | Autoliv Develpement AB | Belt Retractor With Two Force-Limiting Devices Acting in Parallel |
| CN104494558A (en) * | 2014-12-01 | 2015-04-08 | 延锋百利得（上海）汽车安全系统有限公司 | Seat belt retractor with load limit stopping function |
| CN109278699A (en) * | 2018-12-04 | 2019-01-29 | 沈阳金杯锦恒汽车安全系统有限公司 | A kind of coiler mandrel component and seat belt retractor |
| CN109291877A (en) * | 2018-12-04 | 2019-02-01 | 沈阳金杯锦恒汽车安全系统有限公司 | Novel preload limit type seat belt retractor |
| CN211001238U (en) * | 2019-10-16 | 2020-07-14 | 沈阳金杯锦恒汽车安全系统有限公司 | Force limiting type mandrel and safety belt retractor |
-
2019
- 2019-10-16 CN CN201910985616.1A patent/CN110525374B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150083841A1 (en) * | 2011-11-30 | 2015-03-26 | Autoliv Develpement AB | Belt Retractor With Two Force-Limiting Devices Acting in Parallel |
| CN104494558A (en) * | 2014-12-01 | 2015-04-08 | 延锋百利得（上海）汽车安全系统有限公司 | Seat belt retractor with load limit stopping function |
| CN109278699A (en) * | 2018-12-04 | 2019-01-29 | 沈阳金杯锦恒汽车安全系统有限公司 | A kind of coiler mandrel component and seat belt retractor |
| CN109291877A (en) * | 2018-12-04 | 2019-02-01 | 沈阳金杯锦恒汽车安全系统有限公司 | Novel preload limit type seat belt retractor |
| CN211001238U (en) * | 2019-10-16 | 2020-07-14 | 沈阳金杯锦恒汽车安全系统有限公司 | Force limiting type mandrel and safety belt retractor |
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| CN110525374B (en) | 2024-05-17 |
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