CN204641662U - A kind of motor pre-tightening active belt power-transfer clutch - Google Patents
A kind of motor pre-tightening active belt power-transfer clutch Download PDFInfo
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- CN204641662U CN204641662U CN201520171994.3U CN201520171994U CN204641662U CN 204641662 U CN204641662 U CN 204641662U CN 201520171994 U CN201520171994 U CN 201520171994U CN 204641662 U CN204641662 U CN 204641662U
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Abstract
The utility model relates to safety strap technical field, and specifically a kind of motor pre-tightening active belt power-transfer clutch, comprises clutch ratchet, friction-driven constrainer discs, clutch pawl, worm gear seat and transmission base.The utility model compared with the existing technology, devises the taking-up device clutch configuration of motor pre-tightening active belt, and owing to only having 5 parts, structure is simple, easy to assembly, thus reduces cost.The utility model by frictional force drives, guide the motion of clutch pawl and binding function set in one; also extend out hook by opening elasticity and realize friction force generation and axial restraint function simultaneously; mated by the clutch pawl of varying number; meet the transmission of power 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 protected effect of safety strap.
Description
Technical field
The utility model relates to safety strap technical field, specifically a kind of motor pre-tightening active belt power-transfer clutch.
Background technology
The function that tradition passive belt possesses comprises lock in emergency function, the quick-fried pretension function of gunpowder point and limiter hold function etc.But these functions are all based on triggering passive after vehicle collision, the gap between ribbon and occupant can not be eliminated before vehicle collision occurs, thus to the injury that occupant brings after vehicle collision can not be eliminated.Meanwhile, along with the development of automobile active safety technology, increasing user and automaker require a comfortable, intelligent safety strap, and this safety strap needs to possess the functions such as such as intelligent parking recovery, dangerous driving warning.Therefore, traditional passive belt can not meet the development need of current automotive safety technology far away, the intelligent developing direction having motor pre-tightening active belt and become new.
In order to the many-side of safety is considered, require that the function of above-mentioned motor pre-tightening active belt belongs to the Function Extension of traditional type safety strap, the function of that is all increases can not affect the existing function possessed of conventional security band.Therefore, motor pre-tightening active belt needs " power-transfer clutch " mechanism, and the rotational power of electro-motor when motor rotates forward, can be delivered on safety strap belt reel by this mechanism, thus drives ribbon to tighten up; When motor reverses, belt reel is separated with transmission device; When motor is without rotation, safety strap does not normally work by motor affects.Therefore, power-transfer clutch is one of critical component of motor pre-tightening active belt.
The power-transfer clutch of existing motor pre-tightening active belt, such as publication number is the principle of work disclosed in the patent of CN104039607: rely on the friction produced between Compress Spring tensioning slotted ring and retaining ring, stir between power-transfer clutch claw with belt reel ratchet and produce " engagement " and " separation " action, it is generally made up of input gear, unitor support, Compress Spring, tensioning slotted ring, retaining ring, fixing holding element, rivet support pin, Compress Spring, power-transfer clutch claw, belt reel ratchet etc.Wherein, input gear and coupling holder combination form power input element, support for power-transfer clutch claw and tensioning slotted ring provide to install simultaneously.Power-transfer clutch initial condition is released state, and namely power-transfer clutch claw and belt reel ratchet keep being separated.When motor power is delivered on input element by driving system, input element band dynamic clutch claw unitary rotation, under Compress Spring effect, keep static owing to there is friction between tensioning slotted ring and retaining ring, create between tensioning slotted ring and input element and relatively rotate.Now, tensioning slotted ring stirs power-transfer clutch claw, and power-transfer clutch claw is meshed with belt reel ratchet, and now power-transfer clutch completes engagement action, and motor power is delivered on belt reel through driving system and power-transfer clutch.In addition, cover plate is increased at power-transfer clutch end face, and by the mode that rivet support pin is riveted, the longitudinal travel of restriction power-transfer clutch claw.
The clutch configuration of above-mentioned motor pre-tightening active belt compared with complicated, number of parts is many, needs accurate assembly, and cost is higher.
Therefore, need to design a kind of structure motor pre-tightening active belt power-transfer clutch simple, easy to assembly and with low cost.
Summary of the invention
The purpose of this utility model overcomes the deficiencies in the prior art, provides the motor pre-tightening active belt power-transfer clutch that a kind of structure is simple, easy to assembly and with low cost.
In order to achieve the above object, the utility model devises a kind of motor pre-tightening active belt power-transfer clutch, comprise clutch ratchet, friction-driven constrainer discs, clutch pawl, worm gear seat and transmission base, it is characterized in that: worm gear seat is connected with the mouth of motor, worm gear seat is arranged on the inner side of transmission base, friction-driven constrainer discs is arranged on the inner side of worm gear seat, friction-driven constrainer discs with adopt opening elasticity to extend out hook between transmission base to be connected, friction-driven constrainer discs surface is provided with kidney-shaped bullport, the one end side of clutch pawl is provided with leading axle, leading axle is arranged in kidney-shaped bullport, clutch pawl is located in the slideway of worm gear seat, clutch ratchet is positioned at outside friction-driven constrainer discs, the inside face of clutch ratchet is provided with engaging tooth structure, the other end of clutch pawl engages with engaging tooth structure or is separated, clutch ratchet is connected with safety strap 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, and the outside face of projective structure is external cylindrical surface, and the inside face 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 of friction-driven constrainer discs circumferentially, the other end that opening elasticity extends out hook is provided with hook structures, hook structures is through after worm gear seat, be connected with the end face of transmission base, the inner cylinder face of external cylindrical surface and transmission base that opening elasticity extends out hook is fitted.
One end that described opening elasticity extends out hook is fixed on the inner cylinder face of transmission base, the other end that opening elasticity extends out hook is provided with hook structures, hook structures is through after worm gear seat, be connected with the end face of friction-driven constrainer discs, the through hole inner cylinder face of side and friction-driven constrainer discs that opening elasticity extends out hook is fitted.
The quantity of described clutch pawl is 1-4.
The utility model compared with the existing technology, devises the taking-up device clutch configuration of motor pre-tightening active belt, and owing to only having 5 parts, structure is simple, easy to assembly, thus reduces cost.The utility model by frictional force drives, guide the motion of clutch pawl and binding function set in one; also extend out hook by opening elasticity and realize friction force generation and axial restraint function simultaneously; mated by the clutch pawl of varying number; meet the transmission of power 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 protected effect of safety strap.
Accompanying drawing explanation
Fig. 1 is integral structure schematic diagram of the present utility model.
Fig. 2 is key structure refinement figure of the present utility model.
Fig. 3 is in the utility model embodiment 1, the front view of power-transfer clutch.
Fig. 4 is in the utility model embodiment 1, the lateral plan of power-transfer clutch.
Fig. 5 is in the utility model embodiment 1, under disengaging of clutch state, and the A-A cutaway view of Fig. 3.
Fig. 6 is in the utility model embodiment 1, under clutch engaged state, and the A-A cutaway view of Fig. 3.
Fig. 7 is in the utility model embodiment 1, the B-B cutaway view of Fig. 4.
Fig. 8 is in the utility model embodiment 2, structural representation.
Fig. 9 is in the utility model embodiment 2, the front view of power-transfer clutch.
Figure 10 is in the utility model embodiment 2, the lateral plan of power-transfer clutch.
Figure 11 is in the utility model embodiment 2, under clutch engaged state, and the G-G cutaway view of Fig. 9.
Figure 12 is in the utility model embodiment 2, the H-H cutaway view of Figure 10.
Figure 13 is in the utility model embodiment 3, the clutch configuration schematic diagram of two clutch pawls.
Figure 14 is in the utility model embodiment 3, the power-transfer clutch cutaway view of two clutch pawls.
Figure 15 is in the utility model embodiment 3, the clutch configuration schematic diagram of three clutch pawls.
Figure 16 is in the utility model embodiment 3, the power-transfer clutch cutaway view of three clutch pawls.
Figure 17 is in the utility model embodiment 3, the clutch configuration schematic diagram of four clutch pawls.
Figure 18 is in the utility model embodiment 3, the power-transfer clutch cutaway view of four clutch pawls.
Detailed description of the invention
Now by reference to the accompanying drawings the utility model is described further.
Embodiment 1
As shown in figs. 1-7, this example comprises clutch ratchet 1, friction-driven constrainer discs 2, clutch pawl 3, worm gear seat 4 and transmission base 5, worm gear seat 4 is connected with the mouth of motor, worm gear seat 4 is the power intake of power-transfer clutch, the inner side of worm gear seat 4 is provided with face of cylinder 4-1, and 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, and the outside face of projective structure is external cylindrical surface 5-2, and the inside face of projective structure is inner cylinder face 5-1.Friction-driven constrainer discs 2 is arranged on the inner side of worm gear seat 4, and the face of cylinder 4-1 of worm gear seat 4 mates with the external cylindrical surface 5-2 of transmission base 5.Adopt opening elasticity to extend out hook 2-2 between friction-driven constrainer discs 2 with transmission base 5 to be connected, one end that opening elasticity extends out hook 2-2 is fixed on the through hole of friction-driven constrainer discs 2 circumferentially, the other end that opening elasticity extends out hook 2-2 is provided with hook structures, hook structures is through after worm gear seat 4, be 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 fits, and opening elasticity extends out hook 2-2 can realize friction force generation and axial restraint function simultaneously.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, 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, clutch ratchet 1 is positioned at outside friction-driven constrainer discs 2, and the inside face of clutch ratchet 1 is provided with engaging tooth structure 1-1, and the other end of clutch pawl 3 engages with engaging tooth structure 1-1 or is separated, clutch ratchet 1 is connected with safety strap belt reel, and clutch ratchet 1 is the clutch end of power-transfer clutch.
When initial condition, as shown in Figure 5, clutch ratchet 1 and clutch pawl 3 are in released state, and namely clutch pawl 3 is in the lowermost end of the slideway 4-2 of worm gear seat 4, and now the power of worm gear seat 4 cannot be delivered on safety strap belt reel.When the motor is energized, motor power is delivered on worm gear seat 4 by driving system, and worm gear seat 4 produces the clockwise rotation of diagram.During beginning, between the inner cylinder face 5-1 that the opening elasticity of friction-driven constrainer discs 2 extends out hook 2-2 and drive stand 5, keep static owing to there is the effect of friction.Under the kidney-shaped bullport 2-1 of friction-driven constrainer discs 2 guides, clutch pawl 3 outwards skids off along the track 4-2 of worm gear seat 4 by diagram anticlockwise direction, thus clutch pawl 3 is engaged with clutch ratchet 1.Subsequently, worm gear seat 4 continues to rotate clockwise, and worm gear seat 4 drives clutch pawl 3, friction-driven constrainer discs 2 turns to state shown in Fig. 6 together with clutch ratchet 1, finally completes the transmittance process of motor power.Now, safety strap belt reel reclaims belt-strap, and safety strap is in electronic active pretension pattern.
If driven by motor worm gear seat 4 left-hand revolution, between the inner cylinder face 5-1 that the opening elasticity of same friction-driven constrainer discs 2 extends out hook 2-2 and drive stand 5, keep static owing to there is the effect of friction.Under the kidney-shaped bullport 2-1 of friction-driven constrainer discs 2 guides, clutch pawl 3 slips into bottom the track 4-2 of worm gear seat 4, makes clutch pawl 3 and clutch ratchet 1 be in released state.So far, the action that power is separated is completed between clutch ratchet 1 and worm gear seat 4.Now, safety strap belt reel and motor transmission system keep being separated, and safety strap is in conventional security band model.
Embodiment 2
See 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 the inner cylinder face 5-1 of transmission base 5, the other end that opening elasticity extends out hook 2-2 is provided with hook structures, hook structures is through after worm gear seat 4, be connected with the end face 2-5 of friction-driven constrainer discs 2, the through hole inner cylinder face 2-4 of side and friction-driven constrainer discs 2 that opening elasticity extends out hook 2-2 fits.Other structure and working principle are all identical with embodiment 1.
Embodiment 3
In this example, the quantity of clutch pawl 3 is 2-4, and the clutch pawl 3 arranging varying number is the needs transmitted to meet different capacity.High-power transmission is adopted to the structure design of multiple clutch pawl 3, miniwatt transmission is then adopted to the structure design of the single clutch pawl 3 of embodiment 1 or embodiment 2, like this while meeting mechanical strength, contemplate economic manufacturing.
See Figure 13 and 14, be provided with 2 clutch pawls 3, the track 4-2 mated with clutch pawl 3 and kidney-shaped bullport 2-1 is also provided with 2.
See Figure 15 and 16, be provided with 3 clutch pawls 3, the track 4-2 mated with clutch pawl 3 and kidney-shaped bullport 2-1 is also provided with 3.
See Figure 17 and 18, be provided with 4 clutch pawls 3, the track 4-2 mated with clutch pawl 3 and kidney-shaped bullport 2-1 is also provided with 4.
Claims (5)
1. a motor pre-tightening active belt power-transfer clutch, comprise clutch ratchet, friction-driven constrainer discs, clutch pawl, worm gear seat and transmission base, it is characterized in that: worm gear seat (4) is connected with the mouth of motor, worm gear seat (4) is arranged on the inner side of transmission base (5), friction-driven constrainer discs (2) is arranged on the inner side of worm gear seat (4), adopt opening elasticity to extend out hook (2-2) between friction-driven constrainer discs (2) with transmission base (5) to be connected, 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), 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), clutch ratchet (1) is positioned at friction-driven constrainer discs (2) outward, the inside face of clutch ratchet (1) is provided with engaging tooth structure (1-1), the other end of clutch pawl (3) engages with engaging tooth structure (1-1) or is separated, clutch ratchet (1) is connected with safety strap belt reel.
2. a kind of motor pre-tightening active belt power-transfer clutch according to claim 1, it is characterized in that: the inner side of described worm gear seat (4) is provided with the face of cylinder (4-1), the inner side of described transmission base (5) is provided with a projective structure, the outside face of projective structure is external cylindrical surface (5-2), the inside face of projective structure is inner cylinder face (5-1), and the face of cylinder (4-1) mates with external cylindrical surface (5-2).
3. a kind of motor pre-tightening active belt power-transfer clutch according to claim 2, it is characterized in that: one end that described opening elasticity extends out hook (2-2) is fixed on the through hole of friction-driven constrainer discs (2) circumferentially, the other end that opening elasticity extends out hook (2-2) is provided with hook structures, hook structures is through after worm gear seat (4), be 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.
4. a kind of motor pre-tightening active belt power-transfer clutch according to claim 2, it is characterized in that: one end that described opening elasticity extends out hook (2-2) is fixed on the inner cylinder face (5-1) of transmission base (5), the other end that opening elasticity extends out hook (2-2) is provided with hook structures, hook structures is through after worm gear seat (4), be connected with the end face (2-5) of friction-driven constrainer discs (2), the through hole inner cylinder face (2-4) of side and friction-driven constrainer discs (2) that opening elasticity extends out hook (2-2) is fitted.
5. a kind of motor pre-tightening active belt power-transfer clutch according to claim 1, is characterized in that: the quantity of described clutch pawl (3) is 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520171994.3U CN204641662U (en) | 2015-03-25 | 2015-03-25 | A kind of motor pre-tightening active belt power-transfer clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520171994.3U CN204641662U (en) | 2015-03-25 | 2015-03-25 | A kind of motor pre-tightening active belt power-transfer clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204641662U true CN204641662U (en) | 2015-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520171994.3U Active CN204641662U (en) | 2015-03-25 | 2015-03-25 | A kind of motor pre-tightening active belt power-transfer clutch |
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| CN (1) | CN204641662U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104742854A (en) * | 2015-03-25 | 2015-07-01 | 延锋百利得（上海）汽车安全系统有限公司 | Retractor clutch of motor pre-tightening driving type safety belt |
| WO2019214436A1 (en) * | 2018-05-09 | 2019-11-14 | 奥托立夫开发公司 | Engaging and disengaging device, seat belt retractor, and seat belt assembly |
-
2015
- 2015-03-25 CN CN201520171994.3U patent/CN204641662U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104742854A (en) * | 2015-03-25 | 2015-07-01 | 延锋百利得（上海）汽车安全系统有限公司 | Retractor clutch of motor pre-tightening driving type safety belt |
| CN104742854B (en) * | 2015-03-25 | 2017-01-25 | 延锋百利得（上海）汽车安全系统有限公司 | Retractor clutch of motor pre-tightening driving type safety belt |
| WO2019214436A1 (en) * | 2018-05-09 | 2019-11-14 | 奥托立夫开发公司 | Engaging and disengaging device, seat belt retractor, and seat belt assembly |
| US11691593B2 (en) | 2018-05-09 | 2023-07-04 | Autoliv Development Ab | Engaging and disengaging device, seat belt retractor, and seat belt assembly |
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