CN109515376A - Seat belt retractor and seat belt apparatus - Google Patents
Seat belt retractor and seat belt apparatus Download PDFInfo
- Publication number
- CN109515376A CN109515376A CN201811303585.9A CN201811303585A CN109515376A CN 109515376 A CN109515376 A CN 109515376A CN 201811303585 A CN201811303585 A CN 201811303585A CN 109515376 A CN109515376 A CN 109515376A
- Authority
- CN
- China
- Prior art keywords
- seat belt
- spring
- ribbon
- ratchet
- spool
- 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.)
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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
- B60R22/341—Belt retractors, e.g. reels comprising energy-absorbing means
-
- 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
- B60R22/36—Belt retractors, e.g. reels self-locking in an emergency
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
The present invention relates to a kind of seat belt retractor and seat belt apparatus, the seat belt retractor includes: fixing seat (1)；Spool (2), for winding ribbon；First lock piece (3) is connected and as the spool (2) are rotated with the spool (2)；Second lock piece (4), for cooperating with first lock piece (3) with by the spool (2) locking；Buffer unit (5), it is connected between second lock piece (4) and the fixing seat (1), to allow second lock piece (4) to rotate within the scope of predetermined angle relative to the fixing seat (1).Above-mentioned seat belt retractor can allow ribbon to continue to pull out preset length, to buffer the extruding force that ribbon applies human body, ribbon be avoided to cause harm to the human body when the acceleration that ribbon pulls out is more than preset value.
Description
Technical field
The present invention relates to technical field of vehicle, and in particular, to a kind of seat belt retractor and seat belt apparatus.
Background technique
Vehicle safety belt device plays weight as device for passenger protection and air bag in terms of protecting passenger safety together
It acts on.Seat belt apparatus can protect passenger to be thrown out of vehicle without departing from seat or not when vehicle collides or turns on one's side
Outside, avoid passenger by secondary injury.In existing seat belt apparatus, in vehicle suddenly by larger external impacts or vehicle
In the case where emergency braking, ribbon pull out acceleration it is excessive and be more than preset value when, coiler can lock at once, prevent ribbon
It pulls out and secures a passenger on seat, passenger is prevented to be thrown out of.
But travel forward at this time because inertia human body will continue to keep original motion state, in this case may be used
The physical feeling, such as shoulder, clavicle, neck, chest etc. fettered by ribbon can be caused, will receive the biggish extruding force of ribbon,
Cause harm to the human body, such as lead to shoulder ankle injury etc..
Summary of the invention
It is an object of the present invention to provide a kind of seat belt retractor, what which can pull out in ribbon
When acceleration is more than preset value, allows ribbon to continue to pull out preset length, to buffer the extruding force that ribbon applies human body, keep away
Exempt from ribbon to cause harm to the human body.
To achieve the goals above, an aspect of of the present present invention provides a kind of seat belt retractor, comprising: fixing seat；Spool,
For winding ribbon；First lock piece is connected and as the spool is rotated with the spool；Second lock piece, for
First lock piece cooperation is with by the spool locking；Buffer unit is connected to second lock piece and the fixing seat
Between, to allow second lock piece to rotate within the scope of predetermined angle relative to the fixing seat.
Optionally, first lock piece is pawl, and second lock piece is ratchet.
Optionally, the buffer unit includes spring, and the both ends of the spring are connected to the ratchet and described solid
In reservation.
Optionally, the spring is multiple, and multiple springs are uniformly distributed along the circumferential direction of the ratchet.
Optionally, the both ends of the spring offset one from another in the circumferential direction of the ratchet.
Optionally, the buffer unit further includes first connecting rod and the second connecting rod, the first connecting rod with it is described
Ratchet is connected, and second connecting rod is connected with the fixing seat, and the spring is connected to the first connecting rod and described the
Between two connecting rods, so that the extending direction of the spring and the ratchet is axially vertical.
Optionally, the first connecting rod and second connecting rod are along the axially extending of the ratchet.
Optionally, the seat belt retractor further includes energy storage device, and the energy storage device is connect with the spool, is used for
Energy is stored when ribbon pulls out and is released energy when ribbon is withdrawn, so that ribbon resets.
Optionally, the energy storage device is wind spring, and one end of the wind spring is connected with the spool, the other end with it is described solid
Reservation is connected.
Optionally, the wind spring is arranged between the ratchet and the fixing seat, and the wind spring and the spring are in institute
It states and is spaced apart in the axial direction of ratchet, the seat belt retractor further includes partition, and partition setting is in the spring and described
Between wind spring.
It is an object of the present invention to provide a kind of seat belt apparatus, which can be in the acceleration of ribbon pull-out
When degree is more than preset value, allows ribbon to continue to pull out preset length, to buffer the extruding force that ribbon applies human body, avoid knitting
Band causes harm to the human body.
Another aspect of the present invention provides a kind of seat belt apparatus, including seat belt retractor recited above.
Beneficial effects of the present invention:
Vehicle suddenly by larger external impacts or emergency brake of vehicle in the case where, the ribbon of seat belt apparatus pulls out
Acceleration be more than preset value when, the first lock piece and the second lock piece of seat belt retractor are mutually locked, between the two not
It can relative motion.At this point, human body is applied with pulling force to ribbon, and then ribbon applies pulling force to spool.Due to the second lock piece and
It is provided with buffer unit between fixing seat, allows the first lock piece and the second lock piece together can be relative to fixing seat in ribbon
The side of pull-out is rotated up preset angle, so that ribbon be allowed to continue to pull out preset length, rather than ribbon locking at once
And tightly strangle with passenger, to buffer the extruding force that ribbon applies human body, ribbon is avoided to cause harm to the human body, such as
Prevent shoulder, clavicle, neck, the chest etc. of ankle injury passenger.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the perspective view of the seat belt retractor of a specific embodiment of the invention；
Fig. 2 is the main view of the seat belt retractor of a specific embodiment of the invention；
Fig. 3 is the side view of the seat belt retractor of a specific embodiment of the invention.
Description of symbols
1 fixing seat, 2 spool
3 first lock piece, 4 second lock piece
5 buffer unit, 51 spring
52 first connecting rod, 53 second connecting rod
6 wind spring, 7 partition
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
As shown in Figure 1-Figure 3, an aspect of of the present present invention provides a kind of seat belt retractor, comprising: fixing seat 1；Spool 2,
For winding ribbon；First lock piece 3 is connected and as spool 2 is rotated with spool 2；Second lock piece 4 is used for and first
The cooperation of lock piece 3 is with by 2 locking of spool；Buffer unit 5 is connected between the second lock piece 4 and fixing seat 1, to allow second
Lock piece 4 rotates within the scope of predetermined angle relative to fixing seat 1.
Vehicle suddenly by larger external impacts or emergency brake of vehicle in the case where, the ribbon of seat belt apparatus pulls out
Acceleration be more than preset value when, the first lock piece 3 and the second lock piece 4 of seat belt retractor are mutually locked, between the two
It is unable to move relatively.At this point, human body is applied with pulling force to ribbon, and then ribbon applies pulling force to spool 2.Due to the second lock piece
It is provided with buffer unit 5 between 4 and fixing seat 1, allows the first lock piece 3 and the second lock piece 4 together can be relative to fixation
Seat 1 is rotated up preset angle in the side that ribbon pulls out, so that ribbon is allowed to continue to pull out preset length, rather than ribbon
At once locking and tightly strangle with passenger, to buffer the extruding force that ribbon applies human body, ribbon is avoided to cause human body
Injury, such as shoulder, clavicle, neck, chest for preventing ankle injury passenger etc..
It is illustrated for detecting the band sense type seat belt apparatus of acceleration of ribbon pull-out in present embodiment, this hair
The seat belt apparatus such as bright seat belt apparatus such as vehicle sense type, double sense types, certainly it is suitable for detection vehicle acceleration,
The seat belt apparatus of the pulling force that impact force that vehicle is subject to, ribbon are subject to etc..
Wherein, preset angle is relatively small, only ribbon is allowed to continue to pull out lesser length, plays buffering ribbon to people
The effect of the extruding force of body.
As a kind of preferred embodiment of the invention, as shown in figure 3, optionally, the first lock piece 3 is pawl, second
Lock piece 4 is ratchet.In the present embodiment, pawl is formed as substantial circular and is set on spool 2, is additionally provided with and matches on pawl
Weight, when the acceleration that ribbon pulls out is more than preset value, i.e. the rotation acceleration of spool 2 is excessive, acts in the centrifugal force of counterweight
Under, certain rotation occurs for pawl and eccentric relative to spool 2, so that it is connected to the teeth portion of pawl in the teeth portion of ratchet, it is real
The opposite locking of existing ratchet and pawl, i.e., cannot relatively move on the direction that ribbon pulls out between the two.Simultaneously also by spool 2
Basic locking, i.e., under the action of buffer unit 5, spool 2 can only be rotated up preset angle in the side that ribbon pulls out, and
The preset angle very little functions only as the effect for the extruding force that buffering ribbon applies human body.
Certainly, it is suitable for the ratchet and pawl arrangement of other forms, as long as can be in vehicle suddenly by larger
In the case where external impacts or emergency brake of vehicle, the two being capable of locking and by the basic locking of spool 2.
As the preferred embodiment of buffer unit 5, as depicted in figs. 1 and 2, optionally, buffer unit 5 includes spring
51, the both ends of spring 51 are connected on ratchet and fixing seat 1.Spring 51 can be one, or multiple.This implementation
In example, spring 51 be it is multiple, multiple springs 51 are uniformly distributed along the circumferential direction of ratchet, such as four springs 51 are uniformly distributed along the circumferential direction of ratchet,
And the angle between the center of two adjacent springs 51 is 90 °, so that ratchet uniform force, it being capable of smooth rotation.
Spring 51 uses the biggish spring of coefficient of elasticity, that is, needs very big power just and can make spring 51 to stretch, so make ratchet wheel and
The angle of rotation is smaller, with guarantee it is normal pull out ribbon when ratchet will not be rotated relative to fixing seat 1, and vehicle suddenly by
In the case where larger external impacts or emergency brake of vehicle, ribbon can only also continue to pull out lesser distance, then ribbon is subject to
The Spring balanced of pulling force and spring 51 guarantees constraint of the seat belt apparatus to passenger.
As depicted in figs. 1 and 2, in order to enable ratchet can be relative to 1 smooth rotation of fixing seat, optionally, spring 51
Both ends offset one from another in the circumferential direction of ratchet, so that spring 51 is substantially along the tangential to ratchet force-application of ratchet.Since ribbon is wound
On spool 2, spool 2 is by ribbon along the tangential pulling force of spool 2, and then ratchet is also by the pulling force of ribbon, therefore spring
The pulling force that 51 pairs of ratchets apply can offset the pulling force that ribbon applies ratchet, guarantee ratchet stress balance, stable structure.
Spring 51 in order to facilitate the installation of, as depicted in figs. 1 and 2, optionally, buffer unit 5 further includes first connecting rod 52
With the second connecting rod 53, first connecting rod 52 is connected with ratchet, and the second connecting rod 53 is connected with fixing seat 1, and spring 51 is connected to
Between first connecting rod 52 and the second connecting rod 53, so that the extending direction of spring 51 and ratchet is axially vertical, i.e., in ratchet
End face be plane in the case where, the setting parallel and separated from one another with the end face of ratchet of spring 51.First connecting rod 52 can
With on the end face integrally formed and positioned at ratchet with ratchet, the second connecting rod 53 can and position integrally formed with fixing seat 1
In on the end face of fixing seat 1.It could be formed with mount hole, the both ends point of spring 51 on first connecting rod 52 and the second connecting rod 53
It is not articulated on corresponding mount hole, thus easy to assembly, structure is simple, and installation is reliable.
As depicted in figs. 1 and 2, optionally, first connecting rod 52 and the second connecting rod 53 are along the axially extending of ratchet, i.e.,
One connecting rod 52 perpendicular to ratchet end face, the second connecting rod 53 perpendicular to fixing seat 1 end face so that spring 51 only with spine
Stress will not apply axial power, avoid to only apply power tangentially and radially to ratchet on the axially vertical direction of wheel
Ratchet deflection and interfered with other parts.
In order to reset to the ribbon of pull-out, as depicted in figs. 1 and 2, optionally, seat belt retractor further includes energy storage
Device, energy storage device are connect with spool 2, for storing energy when ribbon pulls out and releasing energy when ribbon is withdrawn, with
Reset ribbon.Since seat belt retractor is provided with energy storage device, then ribbon can reset after pulling out, so that ribbon can be anti-
It is multiple to pull out and withdraw.
As depicted in figs. 1 and 2, as a kind of preferred embodiment of energy storage device, optionally, energy storage device is wind spring 6,
One end of wind spring 6 is connected with spool 2, and the other end is connected with fixing seat 1.When ribbon pulls out, the rotation of spool 2 drives wind spring 6 to receive
Tightly, elastic potential energy is stored；When ribbon is withdrawn, wind spring 6 unclamps, and release elastic potential energy drives spool 2 to rotate, and ribbon is withdrawn
To original position.
As depicted in figs. 1 and 2, optionally, wind spring 6 is arranged between ratchet and fixing seat 1, and wind spring 6 and spring 51 are in spine
It is spaced apart in the axial direction of wheel, seat belt retractor further includes partition 7, and partition 7 is arranged between spring 51 and wind spring 6.Partition 7 is used
In separating spring 51 and wind spring 6, prevent the two from interfering with each other.
Another aspect of the present invention provides a kind of seat belt apparatus, including seat belt retractor recited above.
Illustrate the course of work of seat belt apparatus of the invention below with reference to Fig. 1-Fig. 3.
When passenger's normal use seat belt apparatus, pulls out ribbon and spool 2 is driven to rotate clockwise, then pawl is also clockwise
Rotation, the acceleration that ribbon pulls out at this time is without departing from preset value, then pawl is rotated clockwise and not relative to ratchet with spool 2
Can be stuck on ratchet, so will not locking spool 2, spool 2 can continue to rotate clockwise, then ribbon can be pulled out freely, with
Physically for passenger system.
Vehicle suddenly by larger external impacts or emergency brake of vehicle in the case where, ribbon is by the biggish drawing of human body
Power, the then acceleration that ribbon pulls out exceed preset value, then pawl quickly rotates clockwise relative to ratchet and in the inclined of counterweight
Under mental power function, pawl is stuck on ratchet, and relatively unrotatable between the two, at the same with 2 locking of spool.At this point,
Human body is still applied with pulling force to ribbon, and spool 2 is there are still continuing to rotate clockwise trend, then ratchet and pawl is as a whole
There is also continue to rotate clockwise trend.Due to the presence of spring 51, ratchet is rotated clockwise relative to fixing seat 1
Preset angle, spring 51 are elongated, then pawl drives spool 2 also to rotate clockwise preset angle, and then ribbon can be after
It is continuous to pull out scheduled length, buffer function is played, the active force that ribbon applies human body is reduced.Elastic force and application when spring 51
When the pulling force on ribbon reaches balance, ratchet stops operating, and spool 2 also stops operating therewith, and ribbon cannot pull out again.
During ribbon pulls out, spool 2 rotates clockwise always, and wind spring 6 rolls tightly storage energy.
When passenger needs to unlock seat belt apparatus, ribbon is no longer influenced by pulling force, and spring 51 shrinks multiple under the effect of elasticity
Position, so that ratchet also resets, while the release of wind spring 6 releases energy, so that spool 2 rotates counterclockwise, ribbon is furled and is resetted；And
Pawl rotates counterclockwise reset with spool 2, and entire reseting procedure is completed, and seat belt apparatus returns to initial position to be made for next time
With.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (10)
1. a kind of seat belt retractor characterized by comprising
Fixing seat (1)；
Spool (2), for winding ribbon；
First lock piece (3) is connected and as the spool (2) are rotated with the spool (2)；
Second lock piece (4), for cooperating with first lock piece (3) with by the spool (2) locking；
Buffer unit (5) is connected between second lock piece (4) and the fixing seat (1), to allow second locking
Part (4) rotates within the scope of predetermined angle relative to the fixing seat (1).
2. seat belt retractor according to claim 1, which is characterized in that first lock piece (3) is pawl, described
Second lock piece (4) is ratchet.
3. seat belt retractor according to claim 2, which is characterized in that the buffer unit (5) includes spring (51),
The both ends of the spring (51) are connected on the ratchet and the fixing seat (1).
4. seat belt retractor according to claim 3, which is characterized in that the spring (51) is multiple, multiple springs
(51) uniformly distributed along the circumferential direction of the ratchet.
5. seat belt retractor according to claim 4, which is characterized in that the both ends of the spring (51) are in the ratchet
Circumferential direction on offset one from another.
6. seat belt retractor according to claim 5, which is characterized in that the buffer unit (5) further includes the first company
Extension bar (52) and the second connecting rod (53), the first connecting rod (52) are connected with the ratchet, second connecting rod (53)
It is connected with the fixing seat (1), the spring (51) is connected to the first connecting rod (52) and second connecting rod (53)
Between, so that the extending direction of the spring (51) and the ratchet is axially vertical.
7. seat belt retractor according to claim 1 to 6, which is characterized in that it further include energy storage device, institute
Energy storage device is stated to connect with the spool (2), for storing energy when ribbon pulls out and releasing energy when ribbon is withdrawn,
So that ribbon resets.
8. seat belt retractor according to claim 7, which is characterized in that the energy storage device is wind spring (6), the volume
One end of spring (6) is connected with the spool (2), and the other end is connected with the fixing seat (1).
9. seat belt retractor according to claim 8, which is characterized in that the wind spring (6) setting in the ratchet and
Between the fixing seat (1), the wind spring (6) is spaced apart in the axial direction of the ratchet with the spring (51), the safety
Webbing retractor further includes partition (7), and the partition (7) is arranged between the spring (51) and the wind spring (6).
10. a kind of seat belt apparatus, which is characterized in that furled including safety belt according to claim 1 to 9
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811303585.9A CN109515376B (en) | 2018-11-02 | 2018-11-02 | Seat belt retractor and seat belt device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811303585.9A CN109515376B (en) | 2018-11-02 | 2018-11-02 | Seat belt retractor and seat belt device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109515376A true CN109515376A (en) | 2019-03-26 |
| CN109515376B CN109515376B (en) | 2020-06-16 |
Family
ID=65774450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811303585.9A Active CN109515376B (en) | 2018-11-02 | 2018-11-02 | Seat belt retractor and seat belt device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109515376B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110040582A (en) * | 2019-05-13 | 2019-07-23 | 南通汇优洁医用材料有限公司 | A kind of winding up roller of medical non-woven fabrics cutting processing |
| CN110559571A (en) * | 2019-10-07 | 2019-12-13 | 南京林业大学 | Buffering formula speed difference anti-falling device based on interior buffer spring |
| CN110712616A (en) * | 2019-11-01 | 2020-01-21 | 河北鸟巢科技有限公司 | Safety belt structure and vehicle |
| CN113144522A (en) * | 2021-04-20 | 2021-07-23 | 杭州科技职业技术学院 | Training auxiliary device that children's dance was used |
| CN113928263A (en) * | 2021-11-24 | 2022-01-14 | 江苏新达能汽车部件有限公司 | Safety belt winder |
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| EP0680855A2 (en) * | 1994-05-04 | 1995-11-08 | Trw Vehicle Safety Systems Inc. | Tension reducing retractor with an energy absorbing device |
| CN102490681A (en) * | 2011-11-16 | 2012-06-13 | 广州汽车集团股份有限公司 | Seat belt retractor |
| CN105121236A (en) * | 2013-03-12 | 2015-12-02 | Trw汽车股份有限公司 | Belt retractor |
| CN106080497A (en) * | 2015-04-28 | 2016-11-09 | 高田株式会社 | Winding up apparatus for safety belt and seat safety belt apparatus |
| CN207523650U (en) * | 2017-12-11 | 2018-06-22 | 山东交通学院 | A kind of tight receiving apparatus of safety belt |
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| US4228968A (en) * | 1978-05-20 | 1980-10-21 | Daimler-Benz Aktiengesellschaft | Reel for automatic safety belts for vehicles, especially motor vehicles |
| EP0680855A2 (en) * | 1994-05-04 | 1995-11-08 | Trw Vehicle Safety Systems Inc. | Tension reducing retractor with an energy absorbing device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110040582A (en) * | 2019-05-13 | 2019-07-23 | 南通汇优洁医用材料有限公司 | A kind of winding up roller of medical non-woven fabrics cutting processing |
| CN110040582B (en) * | 2019-05-13 | 2024-03-15 | 南通汇优洁医用材料有限公司 | Medical non-woven fabric slitting roller |
| CN110559571A (en) * | 2019-10-07 | 2019-12-13 | 南京林业大学 | Buffering formula speed difference anti-falling device based on interior buffer spring |
| CN110712616A (en) * | 2019-11-01 | 2020-01-21 | 河北鸟巢科技有限公司 | Safety belt structure and vehicle |
| CN110712616B (en) * | 2019-11-01 | 2021-12-31 | 河北鸟巢科技有限公司 | Safety belt structure and vehicle |
| CN113144522A (en) * | 2021-04-20 | 2021-07-23 | 杭州科技职业技术学院 | Training auxiliary device that children's dance was used |
| CN113928263A (en) * | 2021-11-24 | 2022-01-14 | 江苏新达能汽车部件有限公司 | Safety belt winder |
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