CN104742854B - Retractor clutch of motor pre-tightening driving type safety belt - Google Patents
Retractor clutch of motor pre-tightening driving type safety belt Download PDFInfo
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- CN104742854B CN104742854B CN201510133465.9A CN201510133465A CN104742854B CN 104742854 B CN104742854 B CN 104742854B CN 201510133465 A CN201510133465 A CN 201510133465A CN 104742854 B CN104742854 B CN 104742854B
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- clutch
- friction
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- worm gear
- driven
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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
- B60R22/343—Belt retractors, e.g. reels with electrically actuated locking means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The invention relates to the technical field of safety belts, in particular to a retractor clutch of a motor pre-tightening driving type safety belt. The retractor clutch comprises a clutch ratchet wheel, a friction drive constraint disc, a clutch pawl, a worm wheel seat and a transmission base. Compared with the prior art, the retractor clutch structure of the motor pre-tightening driving type safety belt is designed, due to the fact that only five parts are arranged, the structure is simple, assembling is convenient, and the cost is lowered. According to the retractor clutch, the functions of friction force driving, clutch pawl motion guiding and constraining are integrated, the functions of friction force generating and axial fixing can be achieved at the same time through an opening elastic external expansion hook, different numbers of clutch claws are matched to meet the power transmission requirements of different powers of the motor pre-tightening driving type safety belt, hence, the universality of the motor pre-tightening driving type safety belt is improved, and the intelligence and the active protecting effect of the safety belt are improved as well.
Description
Technical field
The present invention relates to safety belt technical field, specifically a kind of coiler of motor pre-tightening active belt from
Clutch.
Background technology
The function that traditional passive belt possesses includes lock in emergency function, gunpowder point quick-fried pretension function and limiter and stops
Function etc..But these functions after being all based on vehicle collision passive triggering it is impossible to enough elimination before vehicle collision occurs is knitted
Gap between band and occupant, thus the injury after vehicle collision can not be eliminated, occupant being brought.Meanwhile, with automobile primary
The development of dynamic safe practice, increasing user and automaker require there is a comfortable, intelligent safety belt, this safety
Band needs to have the functions such as intelligent parking reclaims, dangerous driving alerts.Therefore, traditional passive belt is far from
The development need of current automotive safety technology can be met, intelligent have motor pre-tightening active belt and become new development side
To.
Many-sided for security considers it is desirable to the function of above-mentioned motor pre-tightening active belt belongs to traditional type peace
The Function Extension of full band is that is to say, that the function of all increases can not affect the existing function having been provided with of conventional security band.Cause
This, motor pre-tightening active belt needs " clutch " mechanism, and this mechanism can be when motor rotates forward, by electro-motor
Rotational power be delivered on safety belt belt reel, thus driving ribbon to tighten up；When motor inverts, by belt reel and driver
Structure separates；When motor no rotates, safety belt is not affected and normal work by motor.Therefore, clutch is motor pre-tightening active
One of critical component of formula safety belt.
The clutch of existing motor pre-tightening active belt, such as drape over one's shoulders in the patent of Publication No. cn104039607
The operation principle of dew: rely on the friction producing between compression spring tensioning split ring and retaining ring, stir clutch claw and volume
" engagement " and " separation " action is produced, it is typically by input gear, coupling support, compression spring, tensioning between band cylinder ratchet
The compositions such as split ring, retaining ring, fixing holding element, rivet support pin, compression spring, clutch claw, belt reel ratchet.Its
In, input gear and hookup holder combination constitute power input element, are clutch claw and tensioning split ring provides simultaneously
Install and support.Clutch original state is released state, and that is, clutch claw and belt reel ratchet keep separating.Work as motor power
It is delivered on input element by transmission system, input element drives clutch claw unitary rotation, under compression spring effect,
Rub and remains stationary due to existing between tensioning split ring and retaining ring, between tensioning split ring and input element, create phase
To rotation.Now, clutch claw stirred by tensioning split ring, and clutch claw is meshed with belt reel ratchet, now clutch
Complete engagement action, motor power is delivered on belt reel through transmission system and clutch.Additionally, increasing in clutch end face
Cover plate, and by way of rivet support pin rivets, limit the axial displacement of clutch claw.
The clutch configuration of above-mentioned motor pre-tightening active belt is many compared with complicated, number of parts, needs accurate assembly, and
Relatively costly.
Accordingly, it would be desirable to design a kind of structure motor pre-tightening active belt simple, easy to assembly and with low cost
Coiler clutch.
Content of the invention
The purpose of the present invention is to overcome the deficiencies in the prior art, there is provided a kind of structure is simple, easy to assembly and low cost
The coiler clutch of honest and clean motor pre-tightening active belt.
In order to achieve the above object, the present invention devises a kind of coiler clutch of motor pre-tightening active belt,
Including clutch ratchet, friction-driven constrainer discs, clutch pawl, worm gear seat and transmission base it is characterised in that: worm gear seat and motor
Output end connects, and worm gear seat is arranged on the inner side of transmission base, and friction-driven constrainer discs are arranged on the inner side of worm gear seat, and friction is driven
Between moving constraint disk and transmission base, hook connects are extended out using opening elasticity, friction-driven constraint panel surface is provided with kidney-shaped guiding
Hole, the one end side of clutch pawl is provided with leading axle, and leading axle is arranged on kidney-shaped guiding in the hole, and clutch pawl is located at the cunning in worm gear seat
In road, clutch ratchet is located at outside friction-driven constrainer discs, and the inner surface of clutch ratchet is provided with engagement toothing, clutch pawl another
End is engaged with engagement toothing or is separated, and clutch ratchet is connected with safety belt belt reel.
The inner side of described worm gear seat is provided with the face of cylinder, and the inner side of described transmission base is provided with a projective structure, convex
The outer surface going out structure is external cylindrical surface, and the inner surface of projective structure is inner cylinder face, and the face of cylinder is mated with external cylindrical surface.
One end that described opening elasticity extends out hook is fixed on the through hole circumference of friction-driven constrainer discs, and opening elasticity is outer
The other end expanding hook is provided with hook structures, after hook structures pass through worm gear seat, is connected with the end face of transmission base, and opening elasticity is outer
The external cylindrical surface expanding hook is fitted with the inner cylinder face of transmission base.
One end that described opening elasticity extends out hook is fixed on the inner cylinder face of transmission base, and opening elasticity extends out hook
The other end is provided with hook structures, after hook structures pass through worm gear seat, is connected with the end face of friction-driven constrainer discs, and opening elasticity is outer
Fitted with the through hole inner cylinder face of friction-driven constrainer discs in the side expanding hook.
The quantity of described clutch pawl is 1-4.
The present invention compared with the existing technology, devises the coiler clutch configuration of motor pre-tightening active belt, by
In only 5 parts, structure is simple, easy to assembly, thus reducing cost.The present invention by frictional force drives, guiding clutch
Pawl motion and binding function set, in one, extend out hook also by opening elasticity and realize frictional force generation and axial restraint work(simultaneously
Can, by the clutch pawl coupling of varying number, to meet the power transmission needs of the different capacity of motor pre-tightening active safety band,
Thus improve the popularization of motor pre-tightening active belt, also improve intellectuality and the initiative protection effect of safety belt
Really.
Brief description
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is the key structure refinement figure of the present invention.
Fig. 3 is the front view of clutch in the embodiment of the present invention 1.
Fig. 4 is the side view of clutch in the embodiment of the present invention 1.
Fig. 5 is in the embodiment of the present invention 1, under clutch separation state, the a-a sectional view of Fig. 3.
Fig. 6 is in the embodiment of the present invention 1, under clutch engaged state, the a-a sectional view of Fig. 3.
Fig. 7 is the b-b sectional view of Fig. 4 in the embodiment of the present invention 1.
Fig. 8 is structural representation in the embodiment of the present invention 2.
Fig. 9 is the front view of clutch in the embodiment of the present invention 2.
Figure 10 is the side view of clutch in the embodiment of the present invention 2.
Figure 11 is in the embodiment of the present invention 2, under clutch engaged state, the g-g sectional view of Fig. 9.
Figure 12 is the h-h sectional view of Figure 10 in the embodiment of the present invention 2.
Figure 13 is the clutch configuration schematic diagram of two clutch pawls in the embodiment of the present invention 3.
Figure 14 is the clutch sectional view of two clutch pawls in the embodiment of the present invention 3.
Figure 15 is the clutch configuration schematic diagram of three clutch pawls in the embodiment of the present invention 3.
Figure 16 is the clutch sectional view of three clutch pawls in the embodiment of the present invention 3.
Figure 17 is the clutch configuration schematic diagram of four clutch pawls in the embodiment of the present invention 3.
Figure 18 is the clutch sectional view of four clutch pawls in the embodiment of the present invention 3.
Specific embodiment
In conjunction with accompanying drawing, the present invention is described further.
Embodiment 1
As shown in figs. 1-7, this example includes clutch ratchet 1, friction-driven constrainer discs 2, clutch pawl 3, worm gear seat 4 and transmission base
Seat 5, worm gear seat 4 is connected with the output end of motor, and worm gear seat 4 is the power intake of clutch, and the inner side of worm gear seat 4 is provided with circle
Cylinder 4-1, worm gear seat 4 is arranged on the inner side of transmission base 5.The inner side of transmission base 5 is provided with a projective structure, projective structure
Outer surface be external cylindrical surface 5-2, the inner surface of projective structure is inner cylinder face 5-1.Friction-driven constrainer discs 2 are arranged on worm gear
The inner side of seat 4, the face of cylinder 4-1 of worm gear seat 4 is mated with the external cylindrical surface 5-2 of transmission base 5.Friction-driven constrainer discs 2 and biography
Extend out hook 2-2 using opening elasticity between moving base 5 to connect, one end that opening elasticity extends out hook 2-2 is fixed on friction-driven about
On the through hole circumference of bundle disk 2, the other end that opening elasticity extends out hook 2-2 is provided with hook structures, and hook structures pass through worm gear seat 4
Afterwards, it is connected with the end face of transmission base 5, opening elasticity extends out the external cylindrical surface of hook 2-2 and the inner cylinder face 5-1 of transmission base 5
Laminating, opening elasticity extends out hook 2-2 and can realize frictional force generation and axial restraint function simultaneously.Friction-driven constrainer discs 2 surface
It is provided with kidney-shaped bullport 2-1, the one end side of clutch pawl 3 is provided with leading axle 3-1, and leading axle 3-1 is arranged on kidney-shaped bullport 2-1
Interior, clutch pawl 3 is located in the slideway 4-2 of worm gear seat 4, and clutch ratchet 1 is located at outside friction-driven constrainer discs 2, clutch ratchet 1
Inner surface is provided with engagement toothing 1-1, the other end of clutch pawl 3 and engagement toothing 1-1 engagement or separate, clutch ratchet 1 with
Safety belt belt reel connects, and clutch ratchet 1 is the clutch end of clutch.
In original state, as shown in figure 5, clutch ratchet 1 and clutch pawl 3 are in released state, that is, clutch pawl 3 is in snail
The lowermost end of the slideway 4-2 of wheel seat 4, now the power of worm gear seat 4 cannot be delivered on safety belt belt reel.Work as electric motor starting
When, motor power is delivered on worm gear seat 4 by transmission system, and worm gear seat 4 produces and illustrates clockwise rotation.Start
When, the opening elasticity of friction-driven constrainer discs 2 extends out between hook 2-2 and the inner cylinder face 5-1 of drive stand 5 due to there is friction
Effect and remains stationary.Under the kidney-shaped bullport 2-1 of friction-driven constrainer discs 2 guides, clutch pawl 3 is along the rail of worm gear seat 4
Road 4-2 is counterclockwise outwards skidded off by diagram, so that clutch pawl 3 is engaged with clutch ratchet 1.Subsequently, worm gear seat 4 continue suitable
Hour hands rotate, and worm gear seat 4 drives clutch pawl 3, friction-driven constrainer discs 2 to turn to state shown in Fig. 6 together with clutch ratchet 1,
It is finally completed the transmittance process of motor power.Now, safety belt belt reel reclaims belt-strap, and safety belt is in electronic active
Pretension pattern.
If motor drives worm gear seat 4 rotate counterclockwise, the opening elasticity of same friction-driven constrainer discs 2 extend out hook 2-2 and
Between the inner cylinder face 5-1 of drive stand 5 due to exist friction effect and remains stationary.Waist in friction-driven constrainer discs 2
Under shape bullport 2-1 guiding, clutch pawl 3 slips into the track 4-2 bottom of worm gear seat 4, makes clutch pawl 3 and clutch ratchet 1 is in point
From state.So far, complete the detached action of power between clutch ratchet 1 and worm gear seat 4.Now, safety belt belt reel and electricity
Machine transmission system keeps separating, and safety belt is in conventional security band model.
Embodiment 2
Referring to Fig. 8-12, this example is with the difference of embodiment 1: one end that opening elasticity extends out hook 2-2 is fixed on transmission
On the inner cylinder face 5-1 of pedestal 5, the other end that opening elasticity extends out hook 2-2 is provided with hook structures, and hook structures pass through worm gear seat
After 4, it is connected with the end face 2-5 of friction-driven constrainer discs 2, opening elasticity extends out side and the friction-driven constrainer discs 2 of hook 2-2
Through hole inner cylinder face 2-4 fits.Other structures and operation principle are all same as Example 1.
Embodiment 3
In this example, the quantity of clutch pawl 3 is 2-4, and the clutch pawl 3 of setting varying number is to pass to meet different capacity
The needs passed.High-power transmission is adopted to the structure design of multiple clutch pawls 3, embodiment 1 is then adopted for small-power transmission
Or the structure design of the single clutch pawl 3 of embodiment 2, it is also considered that having arrived economic manufacture so while meeting mechanical strength
Property.
Referring to Figure 13 and 14,2 clutch pawls 3 have been provided with it, the track 4-2 mating with clutch pawl 3 and kidney-shaped bullport 2-1
It is also provided with 2.
Referring to Figure 15 and 16,3 clutch pawls 3 have been provided with it, the track 4-2 mating with clutch pawl 3 and kidney-shaped bullport 2-1
It is also provided with 3.
Referring to Figure 17 and 18,4 clutch pawls 3 have been provided with it, the track 4-2 mating with clutch pawl 3 and kidney-shaped bullport 2-1
It is also provided with 4.
Claims (4)
1. a kind of coiler clutch of motor pre-tightening active belt, including clutch ratchet, friction-driven constrainer discs, clutch
Pawl, worm gear seat and transmission base it is characterised in that: worm gear seat (4) is connected with the output end of motor, and worm gear seat (4) is arranged on biography
The inner side of moving base (5), friction-driven constrainer discs (2) are arranged on the inner side of worm gear seat (4), friction-driven constrainer discs (2) and biography
Extend out hook (2-2) using opening elasticity between moving base (5) to connect, friction-driven constrainer discs (2) surface is provided with kidney-shaped bullport
(2-1), the one end side of clutch pawl (3) is provided with leading axle (3-1), and leading axle (3-1) is arranged in kidney-shaped bullport (2-1),
Clutch pawl (3) is located in the slideway (4-2) of worm gear seat (4), and clutch ratchet (1) is located at friction-driven constrainer discs (2) outward, clutch
The inner surface of ratchet (1) be provided with engagement toothing (1-1), the other end of clutch pawl (3) with engage toothing (1-1) engage or divide
From clutch ratchet (1) is connected with safety belt belt reel, and the inner side of described worm gear seat (4) is provided with the face of cylinder (4-1), described
The inner side of transmission base (5) is provided with a projective structure, and the outer surface of projective structure is external cylindrical surface (5-2), projective structure
Inner surface is inner cylinder face (5-1), and the face of cylinder (4-1) is mated with external cylindrical surface (5-2).
2. a kind of motor pre-tightening active belt according to claim 1 coiler clutch it is characterised in that: institute
One end that the opening elasticity stated extends out hook (2-2) is fixed on the through hole circumference of friction-driven constrainer discs (2), and opening elasticity extends out
The other end of hook (2-2) is provided with hook structures, after hook structures pass through worm gear seat (4), is connected with the end face of transmission base (5),
The inner cylinder face (5-1) of external cylindrical surface and transmission base (5) that opening elasticity extends out hook (2-2) is fitted.
3. a kind of motor pre-tightening active belt according to claim 1 coiler clutch it is characterised in that: institute
One end that the opening elasticity stated extends out hook (2-2) is fixed on the inner cylinder face (5-1) of transmission base (5), and opening elasticity extends out
The other end of hook (2-2) is provided with hook structures, the end face after hook structures pass through worm gear seat (4), with friction-driven constrainer discs (2)
(2-5) connect, opening elasticity extends out the side of hook (2-2) and through hole inner cylinder face (2-4) patch of friction-driven constrainer discs (2)
Close.
4. a kind of motor pre-tightening active belt according to claim 1 coiler clutch it is characterised in that: institute
The quantity of the clutch pawl (3) stated is 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510133465.9A CN104742854B (en) | 2015-03-25 | 2015-03-25 | Retractor clutch of motor pre-tightening driving type safety belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510133465.9A CN104742854B (en) | 2015-03-25 | 2015-03-25 | Retractor clutch of motor pre-tightening driving type safety belt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104742854A CN104742854A (en) | 2015-07-01 |
| CN104742854B true CN104742854B (en) | 2017-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510133465.9A Active CN104742854B (en) | 2015-03-25 | 2015-03-25 | Retractor clutch of motor pre-tightening driving type safety belt |
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| Country | Link |
|---|---|
| CN (1) | CN104742854B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114454847B (en) * | 2022-02-11 | 2023-12-05 | 浙江松原汽车安全系统股份有限公司 | Safety belt retractor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101932480A (en) * | 2008-02-15 | 2010-12-29 | 奥托立夫开发公司 | Seat belt retractor |
| CN102548809A (en) * | 2009-09-30 | 2012-07-04 | 芦森工业株式会社 | Seatbelt retractor |
| CN102666215A (en) * | 2009-11-04 | 2012-09-12 | 奥托立夫开发公司 | Seatbelt retractor |
| CN204641662U (en) * | 2015-03-25 | 2015-09-16 | 延锋百利得（上海）汽车安全系统有限公司 | A kind of motor pre-tightening active belt power-transfer clutch |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5112964B2 (en) * | 2008-06-11 | 2013-01-09 | 株式会社東海理化電機製作所 | Webbing take-up device |
| JP5314572B2 (en) * | 2009-11-10 | 2013-10-16 | 株式会社東海理化電機製作所 | Webbing take-up device |
-
2015
- 2015-03-25 CN CN201510133465.9A patent/CN104742854B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101932480A (en) * | 2008-02-15 | 2010-12-29 | 奥托立夫开发公司 | Seat belt retractor |
| CN102548809A (en) * | 2009-09-30 | 2012-07-04 | 芦森工业株式会社 | Seatbelt retractor |
| CN102666215A (en) * | 2009-11-04 | 2012-09-12 | 奥托立夫开发公司 | Seatbelt retractor |
| CN204641662U (en) * | 2015-03-25 | 2015-09-16 | 延锋百利得（上海）汽车安全系统有限公司 | A kind of motor pre-tightening active belt power-transfer clutch |
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| Publication number | Publication date |
|---|---|
| CN104742854A (en) | 2015-07-01 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20191216 Address after: 200120 Building 8, No. 88, Shengrong Road, Pudong New Area, Shanghai Co-patentee after: Yanfeng Automobile Intelligent Safety System Co., Ltd. Patentee after: Shanghai Lingang Junsheng automobile safety system Co., Ltd Address before: 201315 No. 426 Pu Pu Road, Cambridge Industrial Zone, Shanghai, Pudong New Area Patentee before: Yanfeng Bailide (Shanghai) Automobile Safety System Co., Ltd. |